CN120588974A

CN120588974A - Auxiliary working condition control method of range extender and whole vehicle controller

Info

Publication number: CN120588974A
Application number: CN202511107892.XA
Authority: CN
Inventors: 谭清; 黄大飞; 郑登磊; 庞维
Original assignee: Chengdu Seres Technology Co Ltd
Current assignee: Chengdu Seres Technology Co Ltd
Priority date: 2025-08-08
Filing date: 2025-08-08
Publication date: 2025-09-05

Abstract

The present application relates to a method for controlling a range extender auxiliary operating condition and a vehicle controller. The method includes: obtaining the vehicle's real-time operating condition information after the vehicle is powered on; responding to an activation request for a target range extender auxiliary operating condition initiated by the vehicle's engine, activating the target range extender auxiliary operating condition if the real-time operating condition information meets the preset activation conditions of the target range extender auxiliary operating condition, and obtaining the range extender output target parameters corresponding to the target range extender auxiliary operating condition; constructing a range extender output control request based on the range extender output target parameters; the range extender output control request is used to request adjustment of the vehicle's range extender output parameters to the range extender output target parameters to complete the target range extender auxiliary operating condition. The use of this method can improve the control intelligence level of the range extender auxiliary operating condition.

Description

Auxiliary working condition control method of range extender and whole vehicle controller

Technical Field

The application relates to the technical field of vehicle control, in particular to a range extender auxiliary working condition control method and a whole vehicle controller.

Background

With the development of vehicle control technology, a technology for controlling a range extender of a range extender hybrid electric vehicle is presented, and the range extender is used as a core part of the range extender hybrid electric vehicle, so that the problem of insufficient endurance mileage of the electric vehicle can be solved. And the auxiliary working condition control of the range extender is timely carried out, so that the tail gas emission is ensured to meet the requirements, the engine fault is timely found, the engine efficiency is improved, and the service life of the engine is prolonged.

However, the control of the auxiliary working condition of the range extender is usually realized based on a fixed control period, and the control precision of the auxiliary working condition control mode is poor, and the control method of the auxiliary working condition of the range extender is not intelligent enough.

Disclosure of Invention

In view of the foregoing, it is desirable to provide a range extender assist condition control method, apparatus, overall vehicle controller, computer-readable storage medium, and computer program product that can improve the intelligence of the range extender assist condition control method.

In a first aspect, the present application provides a method for controlling an auxiliary working condition of a range extender, which is applied to a vehicle controller, and includes:

after the vehicle is electrified, acquiring real-time operation condition information of the vehicle;

Responding to an activation request for an auxiliary working condition of a target range extender initiated by an engine of the vehicle, activating the auxiliary working condition of the target range extender if the real-time operation working condition information meets the preset activation condition of the auxiliary working condition of the target range extender, and acquiring an output target parameter of the range extender corresponding to the auxiliary working condition of the target range extender;

And constructing a range extender output control request based on the range extender output target parameter, wherein the range extender output control request is used for requesting to adjust the range extender output parameter of the vehicle to the range extender output target parameter so as to complete the auxiliary working condition of the target range extender.

In a second aspect, the present application further provides a range extender auxiliary condition control device, which is applied to a vehicle controller, and includes:

the operation condition acquisition module is used for acquiring real-time operation condition information of the vehicle after the vehicle is electrified;

The auxiliary working condition activating module is used for responding to an activating request for the auxiliary working condition of the target range extender initiated by the engine of the vehicle, activating the auxiliary working condition of the target range extender if the real-time operation working condition information meets the preset activating condition of the auxiliary working condition of the target range extender, and acquiring the output target parameter of the range extender corresponding to the auxiliary working condition of the target range extender;

The control request construction module is used for constructing a range extender output control request based on the range extender output target parameter, wherein the range extender output control request is used for requesting to adjust the range extender output parameter of the vehicle to the range extender output target parameter so as to complete the auxiliary working condition of the target range extender.

In a third aspect, the present application further provides a vehicle controller, including a memory and a processor, where the memory stores a computer program, and the processor implements the steps of the method according to any one of the embodiments of the first aspect when executing the computer program.

In a fourth aspect, the present application also provides a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method according to any one of the embodiments of the first aspect.

In a fifth aspect, the application also provides a computer program product comprising a computer program which, when executed by a processor, implements the steps of the method according to any of the embodiments of the first aspect.

The auxiliary working condition control method, the auxiliary working condition control device, the whole vehicle controller, the storage medium and the computer program product of the range extender are used for acquiring real-time operation working condition information of a vehicle after the vehicle is electrified through the whole vehicle controller, responding to an activation request for the auxiliary working condition of the target range extender initiated by an engine of the vehicle, activating the auxiliary working condition of the target range extender and acquiring the output target parameter of the range extender corresponding to the auxiliary working condition of the target range extender if the real-time operation working condition information meets the preset activation condition of the auxiliary working condition of the target range extender, constructing the output control request of the range extender based on the output target parameter of the range extender, and requesting to adjust the output parameter of the range extender of the vehicle to the output target parameter of the range extender so as to finish the auxiliary working condition of the target range extender. After the whole vehicle controller is electrified, the real-time operation working condition of the vehicle can be acquired, if a request for activating the auxiliary working condition of the target range extender initiated by the engine of the vehicle is received, whether the real-time operation working condition meets the preset activation condition of the auxiliary working condition of the target range extender is judged, if yes, the auxiliary working condition of the target range extender is activated, and meanwhile, the output target parameters of the range extender corresponding to the auxiliary working condition of the target range extender are acquired, so that the corresponding control request is generated, the control of the output parameters of the range extender is realized, the auxiliary working condition of the target range extender is completed, the activation of the auxiliary working condition of the target range extender is realized according to the real-time operation working condition, and the control of the output parameters of the range extender can be realized according to the auxiliary working condition of the target range extender, so that the control intelligent degree of the auxiliary working condition of the range extender can be improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the related art, the drawings that are required to be used in the embodiments or the related technical descriptions will be briefly described, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

FIG. 1 is a flow chart of a method for controlling auxiliary conditions of a range extender in one embodiment;

FIG. 2 is a flow diagram of a build control request in one embodiment;

FIG. 3 is a flow chart of a method for obtaining a torque adjustment slope and a rotational speed adjustment slope according to an embodiment;

FIG. 4 is a flow chart of an embodiment for obtaining a target engine torque and a target generator speed;

FIG. 5 is a flowchart of a method for controlling auxiliary conditions of a range extender according to another embodiment;

FIG. 6 is a block diagram of an example embodiment of a range extender assist condition control device;

Fig. 7 is an internal structural diagram of the whole vehicle controller in one embodiment.

Detailed Description

The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.

In one embodiment, as shown in fig. 1, a method for controlling an auxiliary working condition of a range extender is provided, and the embodiment is applied to a whole vehicle controller of a vehicle for illustration by the method. In this embodiment, the method includes the steps of:

Step S101, after the vehicle is electrified, acquiring real-time operation condition information of the vehicle.

The real-time operation condition information may be a real-time operation condition signal of the vehicle, for example, may include a real-time operation speed of the vehicle, a real-time state of an engine of the vehicle, such as an engine speed, an engine torque, an engine cooling water temperature, an operation state of the engine, etc., a real-time state of a generator of the vehicle, may include a speed of the generator, a torque of the generator, etc., and may also include information related to a battery pack, such as an electric quantity and a discharge power limit, etc.

Specifically, after the vehicle is electrified, the whole vehicle controller of the vehicle can acquire real-time operation condition information of the vehicle in real time.

Step S102, responding to an activation request for the auxiliary working condition of the target range extender initiated by the engine of the vehicle, activating the auxiliary working condition of the target range extender if the real-time operation working condition information meets the preset activation condition of the auxiliary working condition of the target range extender, and acquiring the output target parameter of the range extender corresponding to the auxiliary working condition of the target range extender.

The auxiliary working condition of the target range extender refers to an auxiliary working condition of the range extender which needs to be activated, the preset activation condition refers to an activation condition of the auxiliary working condition of the target range extender which is preset, in this embodiment, if the engine of the vehicle needs to activate the auxiliary working condition of the target range extender, an activation request aiming at the auxiliary working condition of the target range extender can be initiated to a whole vehicle controller of the vehicle, and a shutdown request is forbidden, wherein the activation request is mainly used for requesting the whole vehicle controller to activate the auxiliary working condition of the target range extender, and the shutdown request is used for ensuring that the whole vehicle controller does not perform shutdown processing before the auxiliary working condition of the target range extender is completed.

Besides, the activation of the auxiliary working condition of the target range extender requires the activation request of the engine for the auxiliary working condition of the target range extender and the real-time operation working condition information of the vehicle, the preset activation condition of the auxiliary working condition of the target range extender is met, and the auxiliary working condition of the target range extender is activated only after the real-time operation working condition information meets the preset activation condition.

The range extender output target parameter refers to the range extender output parameter to be achieved after entering the auxiliary working condition of the target range extender, and the range extender output parameter can be a certain preset value or a certain value determined based on the real-time running working condition of the vehicle and is related to the activated auxiliary working condition of the target range extender.

Specifically, after the real-time operation working condition of the vehicle is obtained, if the whole vehicle controller of the vehicle receives an activation request of the auxiliary working condition of the target range extender, the request can be responded, so that whether the real-time operation working condition meets the preset activation condition of the auxiliary working condition of the target range extender is judged, if so, the auxiliary working condition of the target range extender is activated, and the output target parameter of the range extender corresponding to the auxiliary working condition of the target range extender is obtained.

And step S103, constructing a range extender output control request based on the range extender output target parameter, wherein the range extender output control request is used for requesting to adjust the range extender output parameter of the vehicle to the range extender output target parameter so as to complete the auxiliary working condition of the target range extender.

The range extender output control request refers to a request which is constructed by the whole vehicle controller and used for controlling the range extender output of the vehicle, and after the whole vehicle controller obtains the range extender output target parameter, the range extender output control request can be constructed by utilizing the range extender output target parameter. And then, the range extender output of the vehicle can be controlled through the range extender output control request, so that the range extender output of the vehicle is adjusted to the range extender output target parameter, and the auxiliary working condition of the target range extender is completed.

According to the auxiliary working condition control method of the range extender, after a vehicle is electrified through a vehicle controller, real-time operation working condition information of the vehicle is obtained, an activation request for the auxiliary working condition of the target range extender is initiated by an engine of the vehicle, if the real-time operation working condition information meets the preset activation condition of the auxiliary working condition of the target range extender, the auxiliary working condition of the target range extender is activated, the output target parameter of the range extender corresponding to the auxiliary working condition of the target range extender is obtained, an output control request of the range extender is constructed based on the output target parameter of the range extender, and the output control request of the range extender is used for requesting adjustment of the output parameter of the range extender of the vehicle to the output target parameter of the range extender so as to complete the auxiliary working condition of the target range extender. After the whole vehicle controller is electrified, the real-time operation working condition of the vehicle can be acquired, if a request for activating the auxiliary working condition of the target range extender initiated by the engine of the vehicle is received, whether the real-time operation working condition meets the preset activation condition of the auxiliary working condition of the target range extender is judged, if yes, the auxiliary working condition of the target range extender is activated, and meanwhile, the output target parameters of the range extender corresponding to the auxiliary working condition of the target range extender are acquired, so that the corresponding control request is generated, the control of the output parameters of the range extender is realized, the auxiliary working condition of the target range extender is completed, the activation of the auxiliary working condition of the target range extender is realized according to the real-time operation working condition, and the control of the output parameters of the range extender can be realized according to the auxiliary working condition of the target range extender, so that the control intelligent degree of the auxiliary working condition of the range extender can be improved.

In one embodiment, the range extender output target parameters include an engine target torque and a generator target speed corresponding to a target range extender assist condition, and step S103 may further include constructing an engine torque control request based on the engine target torque and a generator speed control request based on the generator target speed, the engine torque control request requesting adjustment of the engine torque of the vehicle to the engine target torque, the generator speed control request requesting adjustment of the generator speed of the vehicle to the generator target speed.

The target torque of the engine and the target rotating speed of the generator are respectively the engine torque and the rotating speed of the generator which are required to be achieved after entering the auxiliary working condition of the target range extender, and the target torque of the engine and the target rotating speed of the generator can be a certain preset value or a certain value which is determined based on the real-time running working condition of the vehicle and is related to the activated auxiliary working condition of the target range extender. The engine torque control request refers to a request constructed by the vehicle controller for controlling the engine torque of the vehicle, and the generator rotation speed control request refers to a request constructed by the vehicle controller for controlling the generator rotation speed of the vehicle.

In this embodiment, the range extender output target parameter may be an engine target torque that controls the engine torque and a generator target rotational speed that controls the generator rotational speed, and thus the range extender output control request constructed may include an engine torque control request for requesting adjustment of the engine torque of the vehicle to the engine target torque and a generator rotational speed control request for requesting adjustment of the generator rotational speed of the vehicle to the generator target rotational speed.

In this embodiment, controlling the output of the range extender may include controlling the engine torque of the vehicle and controlling the generator speed of the vehicle, and by this means, the accuracy of the output control of the range extender may be further improved.

In one embodiment, the real-time operating condition information includes an actual engine torque and an actual generator speed of the vehicle, and as shown in FIG. 2, step S103 may further include:

step S201, a torque adjustment slope is obtained according to a torque difference between the engine target torque and the engine actual torque, and a rotation speed adjustment slope is obtained according to a rotation speed difference between the generator target rotation speed and the generator actual rotation speed.

The actual engine torque refers to the real-time engine torque during vehicle operation, and the actual generator speed refers to the real-time generator speed during vehicle operation, the torque adjustment ramp is an adjustment ramp for adjusting the engine torque to the engine target torque, and the speed adjustment ramp is an adjustment ramp for adjusting the generator speed to the generator target speed.

Specifically, after the engine target torque and the generator target rotation speed are obtained, the real-time engine torque and the generator rotation speed can be obtained from real-time operation condition information of the vehicle and used as the actual engine torque and the actual generator rotation speed, and then the whole vehicle controller can calculate the torque difference between the engine target torque and the actual engine torque and the rotation speed difference between the generator target rotation speed and the actual generator rotation speed, so that corresponding torque adjustment slopes are obtained according to the torque difference respectively, and corresponding rotation speed adjustment slopes are obtained according to the rotation speed difference.

And step S202, an engine torque control request is constructed based on the engine target torque and the torque adjustment slope, and a generator rotating speed control request is constructed based on the generator target rotating speed and the rotating speed adjustment slope, wherein the engine torque control request is used for requesting to adjust the engine torque of the vehicle to the engine target torque according to the torque adjustment slope, and the generator rotating speed control request is used for requesting to adjust the generator rotating speed of the vehicle to the generator target rotating speed according to the rotating speed adjustment slope.

After the torque adjustment slope and the rotation speed adjustment slope are obtained, the whole vehicle controller can also combine the target torque of the engine and the torque adjustment slope to construct an engine torque control request, and simultaneously combine the target rotation speed of the generator and the rotation speed adjustment slope to construct a generator rotation speed control request. And then, the engine torque of the vehicle can be controlled through the engine torque control request, so that the engine torque of the vehicle is regulated to the engine target torque according to the torque regulation slope, and the generator rotating speed of the vehicle is controlled through the generator rotating speed control request, so that the generator rotating speed of the vehicle is regulated to the generator target rotating speed according to the rotating speed regulation slope, and the auxiliary working condition of the target range extender is completed.

In this embodiment, the torque adjustment slope may be further obtained based on a torque difference between the engine target torque and the engine actual torque, and the rotational speed adjustment slope may be obtained based on a rotational speed difference between the generator target rotational speed and the generator actual rotational speed, so that the engine torque control request and the generator rotational speed control request may be constructed by using the torque adjustment slope and the rotational speed adjustment slope, and by this way, the control accuracy of the engine torque control and the generator rotational speed control may be further improved.

Further, the real-time operation condition information further includes an engine cooling water temperature and an actual engine speed of the vehicle, and as shown in fig. 3, step S202 may further include:

Step S301, a first torque slope adjustment factor is obtained according to the torque difference and the actual rotation speed of the engine, and a first rotation speed slope correction factor is obtained according to the rotation speed difference.

Step S302, a second torque gradient correction factor and a second rotation speed gradient correction factor corresponding to the engine cooling water temperature are obtained.

The first torque slope adjustment factor and the second torque slope correction factor may be two torque slope correction factors for correcting the reference torque adjustment slope, where the first torque slope adjustment factor may be determined based on the torque difference and the actual engine speed, and the second torque slope correction factor may be determined based on the engine cooling water temperature. The first rotation speed slope correction factor and the second rotation speed slope correction factor can be two rotation speed slope correction factors for correcting the reference rotation speed adjustment slope respectively, wherein the first rotation speed slope correction factor can be determined based on rotation speed difference, and the second rotation speed slope correction factor can be determined according to the cooling water temperature of the engine.

Specifically, the vehicle controller may obtain the first torque gradient adjustment factor according to the torque difference and the actual rotation speed of the engine, and obtain the first rotation speed gradient correction factor according to the rotation speed difference. Meanwhile, the whole vehicle controller can also obtain the engine cooling water temperature of the vehicle from the real-time operation condition information, and then can respectively obtain a second torque gradient correction factor and a second rotating speed gradient correction factor according to the engine cooling water temperature.

Step S303, correcting the preset reference torque adjustment slope by using the first torque slope adjustment factor and the second torque slope correction factor to obtain a torque adjustment slope, and correcting the preset reference rotation speed adjustment slope by using the first rotation speed slope correction factor and the second rotation speed slope correction factor to obtain a rotation speed adjustment slope.

The reference torque adjustment slope and the reference rotation speed adjustment slope refer to an unmodified torque adjustment slope and rotation speed adjustment slope, respectively, which may be preset, for example, the reference torque adjustment slope may be set to 10n·m/ms, and the reference rotation speed adjustment slope may be set to 100r/ms.

Specifically, the vehicle controller may correct the preset reference torque adjustment slope using the first torque slope adjustment factor and the second torque slope adjustment factor after obtaining the first torque slope adjustment factor and the second torque slope adjustment factor, thereby obtaining a final torque adjustment slope, and may correct the reference rotational speed adjustment slope using the first rotational speed slope adjustment factor and the second rotational speed slope adjustment factor after obtaining the first rotational speed slope adjustment factor and the second rotational speed slope adjustment factor, thereby obtaining a final rotational speed adjustment slope.

In this embodiment, the first torque slope adjustment factor may also be obtained by the torque difference and the actual rotation speed of the engine, and the first rotation speed slope correction factor may also be obtained by the rotation speed difference, and the corresponding second torque slope correction factor and second rotation speed slope correction factor may also be obtained based on the engine cooling water temperature, so that the above torque slope correction factor and rotation speed slope correction factor may be used to respectively correct the preset reference torque adjustment slope and reference rotation speed adjustment slope, and by this way, the accuracy of setting the torque slope correction factor and rotation speed slope correction factor may be improved.

Further, step S301 may further include obtaining a torque gradient adjustment factor corresponding to the torque difference and the actual engine speed from a first map as a first torque gradient adjustment factor, obtaining a speed gradient correction factor corresponding to the engine cooling water temperature from a second map as a first speed gradient correction factor, storing a correspondence between different torque differences, the actual engine speed and different torque gradient adjustment factors in the first map, and positive correlation between the absolute value of the torque difference and the actual engine speed and the torque gradient adjustment factor, storing a correspondence between different speed differences and the speed gradient correction factor in the second map, and positive correlation between the absolute value of the speed difference and the speed gradient correction factor, and obtaining a speed gradient correction factor corresponding to the engine cooling water temperature from a third map as a second speed gradient adjustment factor, and obtaining a speed gradient correction factor corresponding to the engine cooling water temperature from a fourth map, storing a positive correlation between different engine cooling water temperature and the engine cooling water temperature correction factor in the third map, and positive correlation between the different engine cooling water temperature correction factors in the fourth map, and positive correlation between the engine cooling water temperature correction factor and the positive correlation between the engine cooling water temperature and the positive gradient correction factor.

The first mapping relation is used for storing the corresponding relation between different torque differences and the actual rotation speed of the engine and different torque slope adjustment factors, the corresponding relation can be a certain corresponding relation table, and in the first mapping relation, the absolute value of the torque differences and the positive correlation between the actual rotation speed of the engine and the torque slope adjustment factors are formed, namely, the larger the absolute value of the torque differences or the actual rotation speed of the engine is, the larger the torque slope adjustment factors are correspondingly. Similarly, the second mapping relationship is used for storing the corresponding relationship between different rotation speed differences and rotation speed slope correction factors, the corresponding relationship can also be a certain corresponding relationship table, and the rotation speed differences and the rotation speed slope correction factors in the second mapping relationship also form positive correlation, namely the larger the rotation speed differences, the larger the rotation speed slope correction factors are.

Specifically, a first mapping relationship and a second mapping relationship may be preset in the vehicle controller, and after the torque difference and the rotation speed difference are obtained, a first torque slope adjustment factor may be obtained from the first mapping relationship, and a first rotation speed slope correction factor may be obtained from the second mapping relationship.

For example, the first mapping relationship may be as shown in table 1:

TABLE 1 first mapping Table

The second mapping relationship may be as shown in table 2:

TABLE 2 second mapping Table

It can be seen that the greater the absolute value of the torque difference between the engine target torque and the engine actual torque, the greater the torque slope adjustment factor, i.e., the positive correlation between the torque difference and the torque slope adjustment factor, and the greater the engine actual rotational speed, the greater the torque slope adjustment factor, i.e., the positive correlation between the engine actual rotational speed and the torque slope adjustment factor. And as the rotation speed difference between the target rotation speed of the generator and the actual rotation speed of the generator is larger, the rotation speed slope regulating factor is also larger, namely, the rotation speed difference and the rotation speed slope correcting factor are in positive correlation.

The third mapping relationship is used for storing the correspondence between different engine cooling water temperatures and torque slope correction factors, the correspondence may be a certain correspondence table, and in the third mapping relationship, the engine cooling water temperatures and the torque slope correction factors are in positive correlation, that is, the higher the engine cooling water temperature is, the larger the torque slope correction factor is correspondingly. Similarly, the fourth mapping relationship is used for storing the correspondence relationship between different engine cooling water temperatures and rotation speed slope correction factors, the correspondence relationship may also be a certain correspondence relationship table, and in the fourth mapping relationship, the engine cooling water temperatures and the rotation speed slope correction factors also form a positive correlation relationship, that is, the higher the engine cooling water temperature is, the larger the rotation speed slope correction factor is correspondingly.

Specifically, a third mapping relation and a fourth mapping relation may be preset in the vehicle controller, and after the engine cooling water temperature is obtained, a torque slope correction factor and a rotation speed slope correction factor corresponding to the engine cooling water temperature may be obtained from the third mapping relation and the fourth mapping relation, respectively.

For example, the third mapping relationship may be as shown in table 3:

TABLE 3 third mapping Table

The fourth mapping relationship may be as shown in table 4:

TABLE 4 fourth mapping Table

It can be seen that as the engine cooling water temperature is higher, the torque gradient correction factor and the rotation speed gradient correction factor are correspondingly higher, namely positive correlation is formed between the engine cooling water temperature and the torque gradient correction factor and between the engine cooling water temperature and the rotation speed gradient correction factor.

In this embodiment, the torque slope correction factor and the rotation speed slope correction factor may be obtained by setting the first mapping relationship, the second mapping relationship, the third mapping relationship and the fourth mapping relationship, and by this way, accuracy of obtaining the torque adjustment slope and the rotation speed adjustment slope may be further improved.

In one embodiment, after step S102, the method may further include responding to an exit request initiated by an engine of the vehicle for the auxiliary working condition of the target range extender, or exiting the auxiliary working condition of the target range extender if the real-time operation working condition information meets a preset exit condition of the auxiliary working condition of the target range extender, and/or after step S102, generating a prompt signal corresponding to the auxiliary working condition of the target range extender, and sending the prompt signal to a central control instrument of the vehicle so as to prompt that the vehicle is currently in the auxiliary working condition of the target range extender.

In this embodiment, after the auxiliary working condition of the target range extender is activated, if the engine of the vehicle needs to exit the auxiliary working condition of the target range extender, an exit request for the auxiliary working condition of the target range extender may be initiated to the vehicle controller of the vehicle to request the vehicle controller to exit the auxiliary working condition of the target range extender. After receiving the exit request, the whole vehicle controller can exit the auxiliary working condition of the target range extender according to the exit request of the auxiliary working condition of the target range extender, or judge whether the preset exit condition of the auxiliary working condition of the target range extender is met according to the real-time collected information of the running working condition of the vehicle, namely the real-time running working condition information, and if the preset exit condition is met, actively exit the auxiliary working condition of the target range extender.

In addition, after the auxiliary working condition of the target range extender is activated, in order to prompt the driver of the vehicle that the engine is in the auxiliary working condition of the target range extender, the vehicle can be driven normally. In this embodiment, after the auxiliary working condition of the target range extender is activated, a prompt signal corresponding to the auxiliary working condition of the target range extender may be generated, and the prompt signal may be sent to a central control instrument of the vehicle, where the central control instrument may be used to prompt the driver that the vehicle is currently in the auxiliary working condition of the target range extender, so that the vehicle may drive normally.

In this embodiment, after the auxiliary working condition of the target range extender is activated, if an exit request of the auxiliary working condition of the target range extender is received, or the real-time operation working condition information meets a preset exit condition of the auxiliary working condition of the target range extender, the auxiliary working condition of the target range extender may be exited, and after the auxiliary working condition of the target range extender is activated, a prompt signal may be sent to the central control instrument, so as to prompt the driver that the vehicle is currently in the auxiliary working condition of the target range extender, and by this way, the intelligent degree of the auxiliary working condition control of the target range extender may be further improved.

In one embodiment, the target range extender auxiliary working condition comprises a ‌ fuel evaporation diagnosis pump leakage detection working condition, step S102 can further comprise the step of activating the fuel evaporation diagnosis pump leakage detection working condition if real-time operation working condition information meets first activation conditions, wherein the first activation conditions comprise that a whole vehicle high-voltage system of a vehicle enters a preset state, the speed of the vehicle is smaller than or equal to a preset first vehicle speed threshold value, the battery pack capacity of the vehicle is larger than or equal to a preset first electric quantity threshold value, the battery pack discharging power limit of the vehicle is larger than or equal to a preset first power threshold value, and an engine of the vehicle is in at least one of preset operation states, the step S102 can further comprise the step of exiting the target range extender auxiliary working condition if real-time operation working condition information meets the preset exit conditions of any one of the first exit conditions, and the step S can further comprise that the vehicle high-voltage system of the vehicle exits the preset state, the speed of the vehicle is larger than or equal to a preset second vehicle speed threshold value, the battery pack discharging power limit of the vehicle is larger than or equal to a preset first electric quantity threshold value, the battery pack discharging power of the vehicle is larger than or equal to a preset second electric quantity threshold value, and the first electric quantity is larger than or equal to a preset first electric quantity threshold value, and the first electric quantity is smaller than or equal to a preset first electric quantity threshold value is smaller than a preset threshold value.

In this embodiment, the auxiliary working condition of the target range extender may be a leak detection working condition of the fuel evaporation diagnosis pump, that is, EVDP fuel evaporation leak detection working conditions, and the preset activation condition corresponding to the working condition may be a first activation condition, and if the real-time operation working condition information of the vehicle meets the following first activation conditions at the same time, it is determined that the real-time operation working condition information at this time meets the preset activation condition of the leak detection working condition of the fuel evaporation diagnosis pump, so as to activate the leak detection working condition of the fuel evaporation diagnosis pump. The first activation condition may include at least one of a vehicle high voltage system of the vehicle entering a preset state, a vehicle high voltage system of the vehicle entering a ready state, a vehicle speed of the vehicle being less than or equal to a preset first vehicle speed threshold, a vehicle speed of the vehicle being less than or equal to 40km/h, a battery pack capacity of the vehicle being greater than or equal to a preset first capacity threshold, a battery pack SOC being greater than or equal to 15%, a battery pack discharge power limit of the vehicle being greater than or equal to a preset first power threshold, a battery discharge power limit being greater than or equal to 25kw, and an engine of the vehicle being in a preset operating state, the engine being in at least one of a normal operating state.

The preset exit condition corresponding to the fuel evaporation and leakage detection condition EVDP can be the first exit condition, and if the real-time operation condition information of the vehicle meets any one of the first exit conditions, the real-time operation condition information at the moment is judged to meet the preset exit condition of the fuel evaporation and leakage detection condition of the fuel evaporation and diagnosis pump, so that the fuel evaporation and leakage detection condition of the fuel evaporation and diagnosis pump is exited. The first exit condition may include at least one of exiting the vehicle high voltage system of the vehicle from a preset state, exiting the ready state, exiting the vehicle high voltage system of the vehicle from a ready state, and determining that a vehicle speed of the vehicle is greater than or equal to a preset second vehicle speed threshold, determining that a vehicle speed of the vehicle is greater than or equal to 45km/h, determining that a battery pack capacity of the vehicle is less than or equal to a preset second capacity threshold, determining that a battery pack SOC is less than or equal to 12%, determining that a battery pack discharge power limit of the vehicle is less than or equal to a preset second power threshold, and determining that a battery discharge power limit is less than or equal to 20 kw. And, preset second vehicle speed threshold 45km/h is greater than preset first vehicle speed threshold 40km/h, preset second power threshold 12% is less than preset first power threshold 15%, preset second power threshold 20kw is less than preset first power threshold 25kw.

In this embodiment, the target range extender auxiliary condition may be a fuel evaporation diagnostic pump leak detection condition, if the real-time operation condition information of the vehicle satisfies each first activation condition at the same time, it is determined that the real-time operation condition information at this time satisfies a preset activation condition of the fuel evaporation diagnostic pump leak detection condition, thereby activating the fuel evaporation diagnostic pump leak detection condition, and if the real-time operation condition information of the vehicle satisfies any one of the first exit conditions, it is determined that the real-time operation condition information at this time satisfies a preset exit condition of the fuel evaporation diagnostic pump leak detection condition, thereby exiting the fuel evaporation diagnostic pump leak detection condition.

Further, step S102 may further include obtaining a ratio between an actual rotation speed of a generator of the vehicle and an actual rotation speed of an engine, using a preset first engine target torque as an engine target torque corresponding to a leak detection condition of the fuel evaporation diagnosis pump, and obtaining a generator target rotation speed corresponding to the leak detection condition of the fuel evaporation diagnosis pump according to the ratio and the first preset engine rotation speed.

The first engine target torque may be, for example, 10Nm under the preset leak detection condition of the fuel vapor diagnostic pump, and the first preset engine speed may be, for example, 1500Nm under the preset leak detection condition of the fuel vapor diagnostic pump.

In this embodiment, if the auxiliary condition of the target range extender is ‌ fuel evaporation diagnosis pump leakage detection condition, the whole vehicle controller may first obtain the ratio between the real-time actual rotation speed of the generator and the actual rotation speed of the engine of the vehicle, and then may use the preset first engine target torque, that is, 10Nm as the engine target torque corresponding to the fuel evaporation diagnosis pump leakage detection condition. Meanwhile, the target rotation speed of the generator corresponding to the leakage detection working condition of the fuel evaporation diagnosis pump can be calculated according to the first preset engine rotation speed and the ratio between the actual rotation speed of the generator and the actual rotation speed of the engine, and by taking the first preset engine rotation speed as 1500 as an example, the target rotation speed of the generator can be calculated by the following formula:

GCU_EngSpdReq=1500*Ratio

Where GCU ENGSPDREQ represents the generator target speed and Ratio represents the Ratio between the generator actual speed and the engine actual speed.

In this embodiment, if the auxiliary working condition of the target range extender is a leak detection working condition of the fuel evaporation diagnosis pump ‌, the preset first engine target torque can be used as the engine target torque corresponding to the leak detection working condition of the fuel evaporation diagnosis pump, and the generator target rotation speed is obtained according to the ratio between the actual rotation speed of the generator and the actual rotation speed of the engine and the first preset engine rotation speed.

In one embodiment, the target range extender auxiliary condition comprises an integrated catalyst diagnosis auxiliary condition, step S102 can further comprise activating ‌ the integrated catalyst diagnosis auxiliary condition if the real-time operation condition information meets second activation conditions, wherein the second activation conditions comprise that a whole high-voltage system of the vehicle enters a preset state, the speed of the vehicle is smaller than or equal to a preset third speed threshold value, the battery pack capacity of the vehicle is larger than or equal to the preset third electric quantity threshold value, the battery pack discharging power limit of the vehicle is larger than or equal to the preset third power threshold value, and the engine of the vehicle is in at least one of preset operation states, the target range extender auxiliary condition is exited if the real-time operation condition information meets preset exit conditions of the target range extender auxiliary condition, the integrated catalyst diagnosis auxiliary condition is exited if the real-time operation condition information meets any second exit condition, and the second exit conditions comprise that the speed of the whole high-voltage system of the vehicle is larger than or equal to a preset fourth speed threshold value, the battery pack discharging power of the vehicle is larger than or equal to the preset fourth speed threshold value, the fourth battery pack discharging power of the vehicle is larger than or equal to the preset speed threshold value, and the fourth power of the fourth power pack discharging power of the vehicle is larger than or equal to the fourth power threshold value is smaller than the preset speed threshold value, and the fourth power threshold value is smaller than the fourth power threshold value is equal to the fourth power threshold value is larger than the fourth power threshold value is equal to the fourth power threshold value is smaller than the threshold value.

In this embodiment, the target range extender auxiliary condition may also be an integrated catalyst diagnosis auxiliary condition, that is, an ICMD catalyst diagnosis auxiliary condition, and the preset activation condition corresponding to the condition may be a second activation condition, and if the real-time operation condition information of the vehicle meets the following second activation conditions at the same time, it is determined that the real-time operation condition information at this time meets the preset activation condition of the integrated catalyst diagnosis auxiliary condition, thereby activating the integrated catalyst diagnosis auxiliary condition. The second activation condition may include at least one of the whole vehicle high voltage system of the vehicle entering a preset state, the whole vehicle high voltage system of the vehicle entering a ready state, the vehicle speed being less than or equal to a preset third speed threshold, the vehicle speed being less than or equal to 40km/h, the battery pack capacity of the vehicle being greater than or equal to a preset third capacity threshold, the battery pack SOC being greater than or equal to 15%, the battery pack discharge power limit of the vehicle being greater than or equal to a preset third power threshold, the battery discharge power limit being greater than or equal to 25kw, and the engine of the vehicle being in a preset running state, the engine being in at least one of a normal running state.

And the integrated catalyst diagnosis auxiliary working condition, namely, the preset exit condition corresponding to the ICMD catalyst diagnosis working condition, can be the second exit condition, if the real-time operation working condition information of the vehicle meets any one of the following second exit conditions, the real-time operation working condition information at the moment is judged to meet the preset exit condition of the integrated catalyst diagnosis auxiliary working condition, so that the integrated catalyst diagnosis auxiliary working condition is exited. The second exit condition may include at least one of exiting the high voltage system of the vehicle from a preset state, exiting the ready state of the high voltage system of the vehicle, the vehicle speed of the vehicle being greater than or equal to a preset fourth speed threshold, the vehicle speed being greater than or equal to 45km/h, the battery pack capacity of the vehicle being less than or equal to a preset fourth capacity threshold, the battery pack SOC being less than or equal to 12%, the battery pack discharge power limit of the vehicle being less than or equal to a preset fourth power threshold, and the battery discharge power limit being at least one of being less than or equal to 20 kw. And, preset fourth speed threshold 45km/h is greater than preset third speed threshold 40km/h, preset fourth power threshold 12% is less than preset third power threshold 15%, preset fourth power threshold 20kw is less than preset third power threshold 25kw.

In this embodiment, the target range extender auxiliary condition may be an integrated catalyst diagnosis auxiliary condition, if the real-time operation condition information of the vehicle satisfies each second activation condition, it is determined that the real-time operation condition information at this time satisfies a preset activation condition of the integrated catalyst diagnosis auxiliary condition, thereby activating the integrated catalyst diagnosis auxiliary condition, and if the real-time operation condition information of the vehicle satisfies any one of the second exit conditions, it is determined that the real-time operation condition information at this time satisfies a preset exit condition of the integrated catalyst diagnosis auxiliary condition, thereby exiting the integrated catalyst diagnosis auxiliary condition, by which the control intelligence degree of the integrated catalyst diagnosis auxiliary condition may be improved.

Further, step S102 may further include obtaining a ratio between an actual rotation speed of a generator of the vehicle and an actual rotation speed of an engine, taking a preset second engine target torque as an engine target torque corresponding to the diagnosis auxiliary condition of the integrated catalyst, and obtaining a generator target rotation speed corresponding to the diagnosis auxiliary condition of the integrated catalyst according to the ratio and the second preset engine rotation speed.

The second engine target torque may be, for example, 10Nm in the integrated catalyst diagnosis assisting condition, and the first preset engine speed may be, for example, 1500 Nm in the integrated catalyst diagnosis assisting condition.

In this embodiment, if the auxiliary condition of the target range extender is ‌ integrated catalyst diagnosis auxiliary conditions, the whole vehicle controller may first obtain the ratio between the real-time actual rotation speed of the generator and the actual rotation speed of the engine of the vehicle, and then may use the preset second engine target torque, that is, 10Nm, as the engine target torque corresponding to the integrated catalyst diagnosis auxiliary conditions. Meanwhile, the target rotation speed of the generator corresponding to the diagnosis auxiliary working condition of the integrated catalyst can be calculated according to the second preset engine rotation speed and the ratio between the actual rotation speed of the generator and the actual rotation speed of the engine, and by taking 1500 as an example of the second preset engine rotation speed, the target rotation speed of the generator can be calculated by the following formula:

GCU_EngSpdReq=1500*Ratio

In this embodiment, if the auxiliary condition of the target range extender is the auxiliary condition of the diagnosis of the integrated catalyst, the preset second engine target torque may be further used as the engine target torque corresponding to the auxiliary condition of the diagnosis of the integrated catalyst, and the generator target rotation speed may be obtained according to the ratio between the actual rotation speed of the generator and the actual rotation speed of the engine and the second preset engine rotation speed, so that the accuracy of obtaining the engine target torque corresponding to the auxiliary condition of the diagnosis of the integrated catalyst and the generator target rotation speed may be improved.

In one embodiment, the target range extender auxiliary working condition comprises an integrated catalyst heating auxiliary working condition, step S102 can further comprise activating the integrated catalyst heating auxiliary working condition if real-time operation working condition information meets third activation conditions, wherein the third activation conditions comprise that a whole vehicle high-voltage system of a vehicle enters a preset state, the battery pack capacity of the vehicle is larger than or equal to a preset fifth electric quantity threshold value and smaller than or equal to a preset sixth electric quantity threshold value, the battery pack discharging power limit of the vehicle is larger than or equal to a preset fifth power threshold value, and at least one of an engine of the vehicle is in a preset operation state, the preset sixth electric quantity threshold value is larger than the preset fifth electric quantity threshold value, the target range extender auxiliary working condition is exited if real-time operation working condition information meets preset exit conditions of the target range extender auxiliary working condition, the integrated catalyst heating auxiliary working condition can further comprise that the whole vehicle high-voltage system of the vehicle exits the preset state, the battery pack capacity of the vehicle is larger than or equal to a preset seventh electric quantity threshold value, and the battery pack discharging power of the vehicle is larger than or equal to a preset fifth electric quantity threshold value, and the eighth electric quantity power of the vehicle is larger than or equal to the preset fifth electric quantity threshold value is larger than or equal to the preset electric quantity threshold value, and the fifth electric quantity is larger than or equal to the preset electric quantity threshold value is larger than the fifth electric quantity threshold value.

In this embodiment, the target range extender auxiliary condition may also be an integrated catalyst heating auxiliary condition, that is, an ICTL catalyst heating auxiliary condition, and the preset activation condition corresponding to the condition may be a third activation condition, and if the real-time operation condition information of the vehicle meets the following third activation conditions at the same time, it is determined that the real-time operation condition information at this time meets the preset activation condition of the integrated catalyst heating auxiliary condition, so as to activate the integrated catalyst heating auxiliary condition. The third activation condition may include at least one of the vehicle high voltage system of the vehicle entering a preset state, the vehicle high voltage system of the vehicle entering a ready state, the battery pack capacity of the vehicle being greater than or equal to a preset fifth capacity threshold and less than or equal to a preset sixth capacity threshold, the battery pack SOC being greater than or equal to 15% and less than or equal to 90%, the battery pack discharge power limit of the vehicle being greater than or equal to a preset fifth power threshold, the battery discharge power limit being greater than or equal to 25kw, and the engine of the vehicle being in a preset running state, the engine being in at least one of a normal running state.

And the integrated catalyst heating auxiliary working condition, namely, the preset exit condition corresponding to the ICTL catalyst heating working condition, can be a third exit condition, if the real-time operation working condition information of the vehicle meets any one of the following third exit conditions, the real-time operation working condition information at the moment is judged to meet the preset exit condition of the integrated catalyst heating auxiliary working condition, so that the integrated catalyst heating auxiliary working condition is exited. The third exit condition may include at least one of the vehicle high voltage system exiting the preset state, the vehicle high voltage system exiting the ready state, the battery pack capacity of the vehicle being less than or equal to a preset seventh capacity threshold, the battery pack SOC being less than or equal to 12%, the battery pack capacity of the vehicle being greater than or equal to a preset eighth capacity threshold, the battery pack SOC being greater than or equal to 96%, the battery pack discharge power limit of the vehicle being less than or equal to a preset fourth power threshold, and the battery discharge power limit being at least one of less than or equal to 20 kw. And, the preset seventh power threshold 12% is less than the preset fifth power threshold 15%, the preset eighth power threshold 96% is greater than the preset sixth power threshold 90%, and the preset sixth power threshold 20kw is less than the preset fifth power threshold 25kw.

In this embodiment, the target range extender auxiliary condition may also be an integrated catalyst heating auxiliary condition, if the real-time operation condition information of the vehicle satisfies all the third activation conditions, it is determined that the real-time operation condition information at this time satisfies the preset activation conditions of the integrated catalyst heating auxiliary condition, so as to activate the integrated catalyst heating auxiliary condition, and if the real-time operation condition information of the vehicle satisfies any one of the third exit conditions, it is determined that the real-time operation condition information at this time satisfies the preset exit conditions of the integrated catalyst heating auxiliary condition, so as to exit the integrated catalyst heating auxiliary condition, by which the control intelligence degree of the integrated catalyst heating auxiliary condition can be improved.

In one embodiment, as shown in fig. 4, step S102 may further include:

And S401, obtaining engine torque corresponding to the engine cooling water temperature of the vehicle and the speed of the vehicle from a fifth mapping relation, wherein the fifth mapping relation stores the corresponding relation between different engine cooling water temperatures and speed and different engine torques, the engine torque is in a negative correlation relation with the engine cooling water temperatures and the speed, and the engine torque is provided with a torque minimum value.

The fifth mapping relationship is used for storing different engine cooling water temperatures and vehicle speeds and corresponding relationships between different engine torques, the corresponding relationship can be a certain corresponding relationship table, in the fifth mapping relationship, the engine torques, the engine cooling water temperatures and the vehicle speeds are in negative correlation, namely, the engine torques are correspondingly smaller when the engine cooling water temperatures are higher, the engine torques are correspondingly smaller when the vehicle speeds are higher, and in the engine torques stored in the fifth mapping relationship, the engine torques have the minimum engine torque value, namely, after the engine torque minimum value is reached, the engine torques are not continuously reduced even if the engine cooling water temperatures or the vehicle speeds are continuously increased.

Specifically, if the target range extender auxiliary working condition is the integrated catalyst heating auxiliary working condition, the whole vehicle controller can also obtain the real-time engine cooling water temperature of the vehicle and the speed of the vehicle from the real-time operation working condition information, and then obtain the engine torque corresponding to the engine cooling water temperature and the speed of the vehicle from the fifth mapping relation as the corresponding engine target torque under the integrated catalyst heating auxiliary working condition.

For example, the fifth mapping relationship may be as shown in table 5:

Table 5 fifth mapping table

It can be seen that the engine torque value is gradually decreasing as the cooling water temperature and the vehicle speed are increased, so that the engine torque is inversely correlated with the engine cooling water temperature and the vehicle speed, and the engine torque is provided with the torque minimum value of 10Nm.

Step S402, obtaining a target engine speed corresponding to the engine cooling water temperature of the vehicle and the speed of the vehicle from a sixth mapping relation, wherein the sixth mapping relation stores the corresponding relation between different engine cooling water temperatures and the speed and different engine speeds, the engine speed, the engine cooling water temperature and the speed are in positive correlation, and the engine torque is provided with a speed maximum value;

Step S403, obtaining the target rotation speed of the generator corresponding to the heating auxiliary working condition of the integrated catalyst according to the ratio of the actual rotation speed of the generator of the vehicle to the actual rotation speed of the engine and the target rotation speed of the engine.

The sixth mapping relationship is used for storing the correspondence relationship between different engine cooling water temperatures and vehicle speeds and different engine speeds, the correspondence relationship can also be a certain correspondence relationship table, in the sixth mapping relationship, the engine speeds, the engine cooling water temperatures and the vehicle speeds are positive correlations, that is, the higher the engine cooling water temperature is, the higher the engine speed is, the higher the vehicle speed is, the engine speeds are, and in the engine torque stored in the sixth mapping relationship, the maximum engine speed is provided, that is, after the maximum engine speed is reached, the engine torque is not increased even if the engine cooling water temperature or the vehicle speed is increased continuously.

Specifically, if the target range extender auxiliary condition is an integrated catalyst heating auxiliary condition, the vehicle controller may further obtain an engine speed corresponding to the real-time engine cooling water temperature and the vehicle speed from the sixth mapping relationship, as the engine target speed corresponding to the integrated catalyst heating auxiliary condition, and then calculate the generator target speed corresponding to the integrated catalyst heating auxiliary condition by combining the ratio between the generator actual speed and the engine target speed. For example, the generator target rotational speed may be calculated by the following formula:

GCU_EngSpdReq= VCU_EngSpdReq *Ratio

Where gcu_ ENGSPDREQ represents the generator target speed, vcu_ ENGSPDREQ represents the engine target speed, and Ratio represents the Ratio between the generator actual speed and the engine actual speed.

The sixth mapping relationship may be as shown in table 6:

TABLE 6 sixth mapping Table

As can be seen, as the cooling water temperature and the vehicle speed increase, the engine speed value also gradually increases, so the engine speed is in positive correlation with the engine cooling water temperature and the vehicle speed, and the engine speed is provided with a speed maximum value 1500.

In this embodiment, if the auxiliary condition of the target range extender is the auxiliary condition of heating by the integrated catalyst, the engine target torque corresponding to the auxiliary condition of diagnosis by the integrated catalyst may be obtained through a fifth mapping relationship, and the generator target speed may be obtained according to the ratio between the actual speed of the generator and the actual speed of the engine and the engine target speed, and the engine target speed may be obtained through a sixth mapping relationship.

In one embodiment, the method can identify the vehicle operation condition in real time through the vehicle controller VDC, periodically detect the engine auxiliary condition requirement, coordinate and control the engine and generator torque and rotation speed by utilizing the decoupling characteristic of the range extender and the vehicle driving component, complete EVDP fuel evaporation leakage detection, ICMD catalyst diagnosis, ICTL catalyst heating and the like by matching with the engine, further improve the vehicle economy and stability, and reduce the emission of harmful gases. As shown in fig. 5, the method may include the steps of:

The method comprises the steps of step 1 of identifying the working condition of the whole vehicle and monitoring the requirement of an auxiliary working condition, wherein a whole vehicle controller VDC obtains signals of a vehicle speed VehSpd, an engine rotating speed EngSpd, an engine torque EngTq, a generator rotating speed GcuSpd, a generator torque GcuTq, a battery pack SCO, a battery pack discharge power limit BattDchaPwrLimn, an engine cooling water temperature EmsCooltTemp, an engine running state EmsEcuStatus and the like through a local area network control bus to identify the working condition of the whole vehicle, periodically monitors the requirement of the auxiliary working condition of the engine, namely EVDP a fuel evaporation leakage detection request, an ICMD catalyst diagnosis request and an ICTL catalyst heating request, and monitors the fault state of the engine and the fault state of the generator through an internal diagnosis module in real time.

Step 2, EVDP fuel evaporation and leakage detection activation and exit, namely enabling EVDP fuel evaporation and leakage detection functions by the vehicle control unit VDC when all the following conditions are simultaneously met:

(1) High pressure on the whole vehicle and entering Reday state;

(2) The speed of the whole car is less than or equal to 40km/h;

(3) The SOC of the battery pack is more than or equal to 15 percent (TBD);

(4) The limit of the battery discharge power is more than or equal to 25kw (TBD);

(5) Engine on state = 4;

(6) Receive EVDP diagnostic request sent by EMS = 1.

The vehicle control unit VDC exits EVDP the fuel evaporation leak detection function when any of the following is satisfied:

(1) The whole vehicle exits Reday;

(2) The speed of the whole vehicle is more than or equal to 45km/h;

(3) The SOC of the battery pack is less than or equal to 12 percent;

(4) The battery discharge power limit is less than or equal to 20kw;

(5) And receiving EVDP fuel evaporation leakage detection request=0 sent by the EMS.

Step 3, EVDP fuel evaporation leakage detection auxiliary condition control:

when the VDC recognizes the above working conditions and activates EVDP fuel evaporation and leakage detection function, the engine target torque request=10Nm (TBD) is controlled, the generator GCU is controlled to enter a rotation speed control mode, the target rotation speed request=1500 x Ratio is the rotation speed Ratio between the generator GCU and the engine, the engine sends EVDP diagnosis requirement and synchronously sends a shutdown prohibition request, the VDC responds to shutdown prohibition until the engine auxiliary working conditions are completed, if the engine is not in an operating state, the VDC does not respond, and when the VDC recognizes the above exit condition and exits EVDP fuel evaporation and leakage detection function, the VDC requests the engine torque to gradually rise until normal power generation is restored or shutdown is completed.

ICMD catalyst diagnostic activation and exit step 4 the vehicle controller VDC activates ICMD catalyst diagnostic function when all of the following conditions are met simultaneously:

(1) High pressure on the whole vehicle and entering Reday state;

(2) The speed of the whole car is less than or equal to 40km/h;

(3) The SOC of the battery pack is more than or equal to 15 percent (TBD);

(5) Engine on state = 4;

(6) Receive EVDP diagnostic request sent by EMS = 1.

The vehicle controller VDC exits ICMD catalyst diagnostic function when either:

(1) The whole vehicle exits Reday;

(2) The speed of the whole vehicle is more than or equal to 45km/h;

(3) The SOC of the battery pack is less than or equal to 12 percent;

(4) The battery discharge power limit is less than or equal to 20kw;

(5) ICMD catalyst diagnostic request=0 sent by EMS is received.

Step 5, ICMD catalyst diagnosis auxiliary condition control:

When the VDC recognizes the above working conditions and activates the ICMD catalyst diagnosis function, the engine target torque request=10Nm (TBD) is controlled, the generator GCU is controlled to enter a rotating speed control mode, the target rotating speed request=1500 x Ratio, wherein Ratio is the rotating speed Ratio between the generator GCU and the engine, the engine synchronously sends a shutdown prohibition request when sending the ICMD catalyst diagnosis requirement, the VDC responds to the shutdown prohibition until the engine auxiliary working conditions are completed, if the engine is not in an operating state, the VDC does not respond, and when the VDC recognizes the above exit condition and exits the ICMD catalyst diagnosis function, the VDC requests the engine torque to gradually rise until normal power generation is restored or the engine is stopped.

ICTL catalyst heating activation and exit the vehicle controller VDC activates ICTL catalyst heating function when all the following conditions are simultaneously met:

(1) High pressure on the whole vehicle and entering Reday state;

(2) 15% or less of battery pack and 90% or less of SOC;

(3) The limit of the battery discharge power is more than or equal to 25kw;

(4) Engine on state = 4;

(5) ICTL catalyst heating request from EMS received = 1.

The vehicle controller VDC exits ICTL catalyst heating function when either:

(1) The whole vehicle exits Reday;

(2) The SOC of the battery pack is less than or equal to 12 percent or SOC is more than or equal to 96%;

(3) The battery discharge power limit is less than or equal to 20kw;

(4) ICTL catalyst heating request=0 sent by EMS is received.

Step 7, ICTL catalyst heating auxiliary condition control:

When VDC recognizes the working conditions and activates the ICTL catalyst heating function, the three-way catalyst reaches the optimal working temperature by controlling the torque of the engine and the rotating speed of the generator so as to ensure that the exhaust emission meets the requirements, and after the engine is started for 5-6 minutes, the three-way catalyst can be fully preheated to reach the working temperature, and the target torque of the engine and the target rotating speed of the engine are determined through two parameters of cooling water temperature and vehicle speed and through three-high calibration, as shown in tables 5 and 6.

VDC control engine target torque request vcu_ EngTqReq is shown in table 5, engine target speed request vcu_ ENGSPDREQ is shown in table 6, generator GCU is controlled to enter speed control mode, target speed request:

GCU_EngSpdReq=VCU_EngSpdReq*Ratio

The method comprises the steps of determining a Ratio of rotation speed between a generator GCU and an engine, enabling the engine to synchronously send a shutdown prohibition request when the ICTL catalyst heating requirement is sent, enabling a VDC to respond to shutdown prohibition until an engine auxiliary working condition is completed, enabling the VDC not to respond if the engine is not in a running state and enabling the VDC to request engine torque to gradually rise until normal power generation or shutdown is resumed when the VDC recognizes the above exit condition and exits from an ICTL catalyst heating function.

Further, when the engine auxiliary working condition is activated to enter the auxiliary working condition control, slope limitation is required to be carried out on the engine target torque request and the generator target rotating speed request, and abnormal sound caused by jump of torque and rotating speed when the auxiliary working condition is activated and exited is prevented.

The basic principle is as follows:

And (3) calculating a first torque slope regulating factor by setting a two-dimensional table lookup table by calculating a difference value between the target torque and the actual torque of the engine in the current period as an abscissa and the actual rotation speed of the engine as an ordinate. If the torque difference is larger, the torque slope can be corrected more, when the actual torque of the engine is closer to the target torque, the torque slope is reduced appropriately, so that the torque of the engine is switched smoothly, the NVH performance when the auxiliary working condition is activated and exited is improved, and the first torque slope adjustment factor is shown in table 1.

And simultaneously, the second torque slope correction factor is calculated through the cooling water temperature of the engine to further correct the target torque slope of the engine, which can be shown in the table 3.

Final engine target torque slope:

Wherein, the Indicating the final engine torque adjustment slope,Indicating the reference transmitter torque adjustment slope,Representing a first torque slope adjustment factor,A second torque slope correction factor is indicated.

Similarly, the basic slope of the rotation speed of the generator isAnd obtaining a difference value between the target rotating speed and the actual rotating speed of the generator at the current moment, calculating by using a one-dimensional table lookup 2 to obtain a first rotating speed slope correction factor, and further introducing a second rotating speed slope correction factor corresponding to the cooling water temperature of the engine into a table 4 to carry out secondary correction on the rotating speed slope of the generator.

Final generator speed slope:

Wherein, the Indicating the final generator rotational speed adjustment slope,Represents the regulating slope of the rotation speed of the reference generator,Representing the first rotation speed slope adjustment factor,A second rotational speed slope correction factor is indicated.

Further, in a power-on cycle, if the vehicle controller VDC does not activate any of the engine auxiliary working conditions, fixed-point power-rotation speed or power following power generation is performed according to a range-increasing power generation strategy, and if a shutdown working condition is identified, the engine and the generator are coordinated to perform shutdown control and enter a pure electric working condition. When the range extender enters the auxiliary working conditions of EVDP fuel evaporation leakage detection, ICMD catalyst diagnosis, ICTL catalyst heating and the like, a prompt signal is sent to a central control instrument to prompt a driver that the engine is in the auxiliary working condition of the range extender and can be driven normally.

The embodiment provides a control method for auxiliary working conditions of a range extender, which is used for judging whether the control conditions of the auxiliary working conditions of the range extender are met currently or not based on the information of components such as an engine EMS, a generator GCU and a battery pack BMS obtained by a vehicle control unit VDC, and completing the auxiliary working conditions such as EVDP fuel evaporation leakage detection, ICMD catalyst diagnosis and ICTL catalyst heating by matching with the engine through coordination control of engine torque control and GCU rotating speed, so that the economy and stability of the vehicle are further improved, and the emission of harmful gases is reduced.

It should be understood that, although the steps in the flowcharts related to the embodiments described above are sequentially shown as indicated by arrows, these steps are not necessarily sequentially performed in the order indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in the flowcharts described in the above embodiments may include a plurality of steps or a plurality of stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of the steps or stages is not necessarily performed sequentially, but may be performed alternately or alternately with at least some of the other steps or stages.

Based on the same inventive concept, the embodiment of the application also provides a range extender auxiliary working condition control device for realizing the range extender auxiliary working condition control method. The implementation scheme of the device for solving the problem is similar to that described in the above method, so the specific limitation in the embodiments of the auxiliary working condition control device for one or more range extenders provided below may be referred to the limitation of the auxiliary working condition control method for a range extender hereinabove, and will not be repeated herein.

In one embodiment, as shown in fig. 6, a range extender auxiliary condition control device is provided, and is applied to a vehicle controller, and includes an operation condition acquisition module 601, an auxiliary condition activation module 602, and a control request construction module 603, where:

the operation condition acquisition module 601 is configured to acquire real-time operation condition information of a vehicle after the vehicle is powered on;

An auxiliary working condition activating module 602, configured to respond to an activation request for a target range extender auxiliary working condition initiated by an engine of the vehicle, activate the target range extender auxiliary working condition if the real-time operation working condition information meets a preset activation condition of the target range extender auxiliary working condition, and acquire a range extender output target parameter corresponding to the target range extender auxiliary working condition;

The control request construction module 603 is configured to construct a range extender output control request based on the range extender output target parameter, where the range extender output control request is used to request adjustment of the range extender output parameter of the vehicle to the range extender output target parameter, so as to complete the auxiliary working condition of the target range extender.

In one embodiment, the output target parameters of the range extender include an engine target torque and a generator target rotation speed corresponding to the target range extender auxiliary condition, and a control request construction module 603 further configured to respond to an exit request for the target range extender auxiliary condition initiated by the engine of the vehicle, or exit the target range extender auxiliary condition if the real-time operation condition information meets a preset exit condition of the target range extender auxiliary condition.

In one embodiment, the real-time operating condition information includes an actual engine torque and an actual generator speed of the vehicle, a control request building module 603 further configured to obtain a torque adjustment ramp rate based on a torque difference between the target engine torque and the actual engine torque and a rotational speed adjustment ramp rate based on a rotational speed difference between the target generator speed and the actual generator speed, build an engine torque control request based on the target engine torque and the torque adjustment ramp rate, and build a generator rotational speed control request based on the target generator speed and the rotational speed adjustment ramp rate, the engine torque control request being configured to request an adjustment of the engine torque of the vehicle to the target engine torque according to the torque adjustment ramp rate, the generator rotational speed control request being configured to request an adjustment of the generator speed of the vehicle to the target generator speed according to the rotational speed adjustment ramp rate.

In one embodiment, the real-time operation condition information further includes an engine cooling water temperature and an actual engine speed of the vehicle, a control request construction module 603 further configured to obtain a first torque gradient adjustment factor according to the torque difference and the actual engine speed, obtain a first rotational speed gradient correction factor according to the rotational speed difference, obtain a second torque gradient correction factor and a second rotational speed gradient correction factor corresponding to the engine cooling water temperature, correct a preset reference torque adjustment gradient by using the first torque gradient adjustment factor and the second torque gradient correction factor to obtain a torque adjustment gradient, and correct a preset reference rotational speed adjustment gradient by using the first rotational speed gradient correction factor and the second rotational speed gradient correction factor to obtain a rotational speed adjustment gradient.

In one embodiment, the control request construction module 603 is further configured to obtain, from a first mapping relationship, a torque gradient adjustment factor corresponding to the torque difference and the actual engine speed as a first torque gradient adjustment factor, and obtain, from a second mapping relationship, a rotational speed gradient correction factor corresponding to the engine cooling water temperature as a second torque gradient adjustment factor, wherein the first mapping relationship stores a correspondence between different torque differences, the actual engine speed, and different torque gradient adjustment factors, and positive correlation between an absolute value of the torque difference and the actual engine speed and the torque gradient adjustment factor, the second mapping relationship stores a correspondence between different rotational speed differences and the rotational speed gradient correction factor, and positive correlation between an absolute value of the rotational speed difference and the rotational speed gradient correction factor, and obtain, from a third mapping relationship, a rotational speed gradient correction factor corresponding to the engine cooling water temperature as a second rotational speed gradient correction factor, and obtain, from a fourth mapping relationship, and store a correspondence between different engine cooling water temperature and a rotational speed gradient correction factor, and a positive correlation between the different engine cooling water temperature and the positive correlation between the torque gradient correction factors and the positive correlation between the positive cooling water temperature and the fourth mapping relationship.

In one embodiment, the auxiliary working condition control device of the range extender further comprises an auxiliary working condition exit module, an auxiliary working condition activation module 602 and a central control instrument, wherein the auxiliary working condition exit module is used for responding to an exit request for the auxiliary working condition of the target range extender initiated by an engine of the vehicle or exiting the auxiliary working condition of the target range extender if the real-time operation working condition information meets the preset exit condition of the auxiliary working condition of the target range extender, and the auxiliary working condition activation module 602 is further used for generating a prompting signal corresponding to the auxiliary working condition of the target range extender and sending the prompting signal to the central control instrument of the vehicle so as to prompt that the vehicle is currently in the auxiliary working condition of the target range extender.

In one embodiment, the target range extender auxiliary working condition comprises a fuel evaporation diagnosis pump leakage detection working condition, an auxiliary working condition activating module 602, and is further used for activating the fuel evaporation diagnosis pump leakage detection working condition if real-time operation working condition information meets first activating conditions, wherein the first activating conditions comprise that a whole vehicle high-voltage system of a vehicle enters a preset state, the speed of the vehicle is smaller than or equal to a preset first electric quantity threshold value, the battery pack capacity of the vehicle is larger than or equal to the preset first electric quantity threshold value, the battery pack discharging power limit of the vehicle is larger than or equal to a preset first power threshold value, and at least one of the preset first power threshold value and the preset second electric quantity threshold value is met by an engine of the vehicle, and the auxiliary working condition exiting module is further used for exiting the fuel evaporation diagnosis pump leakage detection working condition if the real-time operation working condition information meets any first exiting condition, wherein the first exiting conditions comprise that the whole vehicle high-voltage system of the vehicle exits a preset state, the speed of the vehicle is larger than or equal to a preset second electric quantity threshold value, the battery pack capacity of the vehicle is smaller than or equal to a preset second electric quantity threshold value, and the battery pack discharging power limit of the vehicle is smaller than or equal to the preset first electric quantity threshold value is smaller than or equal to a preset first electric quantity threshold value, and the preset first electric quantity threshold value is larger than the preset power threshold value and smaller than the first electric quantity threshold value is equal to a preset power threshold value.

In one embodiment, the auxiliary condition activating module 602 is further configured to obtain a ratio between an actual rotation speed of a generator of the vehicle and an actual rotation speed of an engine, and use a preset first engine target torque as an engine target torque corresponding to a leak detection condition of the fuel evaporation diagnostic pump, and obtain the generator target rotation speed corresponding to the leak detection condition of the fuel evaporation diagnostic pump according to the ratio and the first preset engine rotation speed.

In one embodiment, the target range extender auxiliary condition comprises ‌ an auxiliary condition diagnosis of the integrated catalyst, an auxiliary condition activation module 602, which is further used for activating ‌ the auxiliary condition diagnosis of the integrated catalyst if the real-time operation condition information meets second activation conditions, wherein the second activation conditions comprise that a whole high-voltage system of the vehicle enters a preset state, the speed of the vehicle is smaller than or equal to a preset third speed threshold value, the battery pack capacity of the vehicle is larger than or equal to the preset third capacity threshold value, the battery pack discharge power limit of the vehicle is larger than or equal to the preset third power threshold value, and at least one of the engine of the vehicle is in a preset operation state, the auxiliary condition exit module is further used for exiting the auxiliary condition diagnosis of the integrated catalyst if the real-time operation condition information meets any second exit condition, and the second exit condition comprises that the whole high-voltage system of the vehicle exits a preset state, the speed of the vehicle is larger than or equal to a preset fourth speed threshold value, the battery pack capacity of the vehicle is smaller than or equal to the preset fourth speed threshold value, and the battery pack discharge power limit of the vehicle is larger than or equal to the preset third power threshold value, and the engine of the vehicle is in the preset operation state, and the auxiliary condition exit module is further used for exiting the integrated catalyst diagnosis of the auxiliary condition.

In one embodiment, the auxiliary condition activating module 602 is further configured to obtain a ratio between an actual rotation speed of a generator of the vehicle and an actual rotation speed of an engine, and take a preset second engine target torque as an engine target torque corresponding to the auxiliary condition for diagnosing the integrated catalyst, and obtain the generator target rotation speed corresponding to the auxiliary condition for diagnosing the integrated catalyst according to the ratio and the second preset engine rotation speed.

In one embodiment, the target range extender auxiliary working condition comprises an integrated catalyst heating auxiliary working condition, an auxiliary working condition activating module 602 further used for activating the integrated catalyst heating auxiliary working condition if real-time operation working condition information meets any third activating condition, wherein the third activating condition comprises that a whole vehicle high-voltage system of a vehicle enters a preset state, the battery pack capacity of the vehicle is larger than or equal to a preset fifth electric quantity threshold and smaller than or equal to a preset sixth electric quantity threshold, the battery pack discharging power limit of the vehicle is larger than or equal to a preset fifth power threshold, and at least one of an engine of the vehicle is in a preset operation state, the preset sixth electric quantity threshold is larger than the preset fifth electric quantity threshold, an auxiliary working condition exiting module further used for exiting the integrated catalyst heating auxiliary working condition if the real-time operation working condition information meets any third exiting condition, and the third exiting condition comprises that the whole vehicle high-voltage system of the vehicle exits the preset state, the battery pack capacity of the vehicle is smaller than or equal to a preset seventh electric quantity threshold, the battery pack of the vehicle is larger than or equal to the preset eighth electric quantity threshold, the battery pack discharging power of the vehicle is larger than or equal to the preset eighth electric quantity threshold, and the preset battery pack discharging power of the vehicle is larger than or equal to the preset fifth electric quantity threshold, and the preset power of the fifth electric quantity is larger than or equal to the preset power limit of the preset electric quantity is larger than the preset threshold, and the fifth electric quantity discharging power of the preset threshold is larger than the fifth electric quantity threshold, and the threshold is larger than the threshold.

In one embodiment, the auxiliary condition activating module 602 is further configured to obtain, from a fifth mapping relationship, an engine torque corresponding to an engine cooling water temperature of the vehicle and a vehicle speed of the vehicle as an engine target torque corresponding to an integrated catalyst heating auxiliary condition, store, from the fifth mapping relationship, a correspondence relationship between different engine cooling water temperatures and vehicle speeds and different engine torques, wherein the engine torque is in a negative correlation with the engine cooling water temperatures and the vehicle speeds and is provided with a torque minimum, obtain, from a sixth mapping relationship, a target engine speed corresponding to the engine cooling water temperatures of the vehicle and the vehicle speeds of the vehicle, store, from the sixth mapping relationship, a correspondence relationship between different engine cooling water temperatures and the vehicle speeds and different engine speeds, wherein the engine speed is in a positive correlation with the engine cooling water temperatures and the vehicle speeds and is provided with a speed maximum, and obtain, from a ratio between an actual engine speed of a generator of the vehicle and an actual engine speed of the vehicle and a target engine speed, a generator target speed corresponding to the integrated catalyst heating auxiliary condition.

All or part of each module in the auxiliary working condition control device of the range extender can be realized by software, hardware and a combination thereof. The modules can be embedded in or independent of a processor in the whole vehicle controller in a hardware mode, and can also be stored in a memory in the whole vehicle controller in a software mode, so that the processor can call and execute operations corresponding to the modules.

In one embodiment, an overall vehicle controller is provided, the internal structure of which may be as shown in FIG. 7. The vehicle controller comprises a processor, a memory, an input/output interface and a communication interface. The processor, the memory and the input/output interface are connected through a system bus, and the communication interface is connected to the system bus through the input/output interface. The processor of the whole vehicle controller is used for providing calculation and control capabilities. The memory of the whole vehicle controller comprises a nonvolatile storage medium and an internal memory. The nonvolatile storage medium stores a computer program. The internal memory provides an environment for the execution of computer programs in the non-volatile storage medium. The input/output interface of the whole vehicle controller is used for exchanging information between the processor and the external equipment. The communication interface of the whole vehicle controller is used for carrying out wired or wireless communication with an external terminal, and the wireless mode can be realized through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. The computer program, when executed by the processor, implements a range extender auxiliary condition control method.

It will be appreciated by those skilled in the art that the structure shown in fig. 7 is merely a block diagram of a portion of the structure related to the present application, and is not intended to limit the vehicle controller to which the present application is applied, and that a specific vehicle controller may include more or fewer components than those shown, or may combine certain components, or may have a different arrangement of components.

In one embodiment, a vehicle controller is further provided, including a memory and a processor, where the memory stores a computer program, and the processor implements the steps in the above method embodiments when executing the computer program.

In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored which, when executed by a processor, carries out the steps of the method embodiments described above.

In an embodiment, a computer program product is provided, comprising a computer program which, when executed by a processor, implements the steps of the method embodiments described above.

It should be noted that, the user information (including but not limited to user equipment information, user personal information, etc.) and the data (including but not limited to data for analysis, stored data, presented data, etc.) related to the present application are both information and data authorized by the user or sufficiently authorized by each party, and the collection, use and processing of the related data are required to meet the related regulations.

Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, database, or other medium used in embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high density embedded nonvolatile Memory, resistive random access Memory (ReRAM), magneto-resistive random access Memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric Memory (Ferroelectric Random Access Memory, FRAM), phase change Memory (PHASE CHANGE Memory, PCM), graphene Memory, and the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, and the like. By way of illustration, and not limitation, RAM can be in various forms such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), etc. The databases referred to in the embodiments provided herein may include at least one of a relational database and a non-relational database. The non-relational database may include, but is not limited to, a blockchain-based distributed database, and the like. The processor referred to in the embodiments provided in the present application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic unit, a data processing logic unit based on quantum computing, or the like, but is not limited thereto.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples illustrate only a few embodiments of the application and are described in detail herein without thereby limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of the application should be assessed as that of the appended claims.

Claims

1. The auxiliary working condition control method of the range extender is characterized by being applied to a whole vehicle controller, and comprises the following steps of:

2. The method of claim 1, wherein the range extender output target parameters include an engine target torque and a generator target speed corresponding to the target range extender assist condition;

the step of constructing a range extender output control request based on the range extender output target parameter includes:

An engine torque control request is established based on the engine target torque and a generator speed control request is established based on the generator speed target, the engine torque control request being used to request adjustment of the engine torque of the vehicle to the engine target torque, the generator speed control request being used to request adjustment of the generator speed of the vehicle to the generator speed target;

after the auxiliary working condition of the target range extender is activated, the method further comprises the following steps:

Responding to an exit request which is initiated by an engine of the vehicle and aims at the auxiliary working condition of the target range extender, or exiting the auxiliary working condition of the target range extender if the real-time operation working condition information meets the preset exit condition of the auxiliary working condition of the target range extender.

3. The method of claim 2, wherein the real-time operating condition information includes an actual engine torque and an actual generator speed of the vehicle, the constructing an engine torque control request based on the engine target torque, and the constructing a generator speed control request based on the generator target speed includes:

According to the torque difference between the target torque of the engine and the actual torque of the engine, a torque adjustment slope is obtained, and according to the rotation speed difference between the target rotation speed of the generator and the actual rotation speed of the generator, a rotation speed adjustment slope is obtained;

The engine torque control request is used for requesting to adjust the engine torque of the vehicle to the engine target torque according to the torque adjustment slope, and the generator rotating speed control request is used for requesting to adjust the generator rotating speed of the vehicle to the generator target rotating speed according to the rotating speed adjustment slope.

4. The method of claim 3, wherein the real-time operating condition information further includes an engine cooling water temperature and an engine actual speed of the vehicle, wherein the obtaining a torque adjustment slope based on a torque difference between the engine target torque and the engine actual torque, and the obtaining a speed adjustment slope based on a speed difference between the generator target speed and the generator actual speed, comprises:

acquiring a first torque slope adjustment factor according to the torque difference and the actual rotation speed of the engine, and acquiring a first rotation speed slope correction factor according to the rotation speed difference;

acquiring a second torque slope correction factor corresponding to the engine cooling water temperature and a second rotation speed slope correction factor;

And correcting a preset reference torque adjustment slope by using the first torque slope adjustment factor and the second torque slope correction factor to obtain the torque adjustment slope, and correcting a preset reference rotation speed adjustment slope by using the first rotation speed slope correction factor and the second rotation speed slope correction factor to obtain the rotation speed adjustment slope.

5. The method of claim 4, wherein the obtaining a first torque slope adjustment factor based on the torque difference and the actual engine speed, and obtaining a first speed slope correction factor based on the speed difference, comprises:

Obtaining a torque gradient adjustment factor corresponding to the torque difference and the actual engine speed from a first mapping relation, and obtaining a rotational speed gradient correction factor corresponding to the rotational speed difference from a second mapping relation, wherein the first mapping relation stores the corresponding relation between different torque differences, the actual engine speed and the different torque gradient adjustment factors, and the absolute value of the torque difference and the positive correlation between the actual engine speed and the torque gradient adjustment factor, and the second mapping relation stores the corresponding relation between the different rotational speed differences and the rotational speed gradient correction factor, and the positive correlation between the absolute value of the rotational speed difference and the rotational speed gradient correction factor;

the obtaining a second torque slope correction factor and a second rotation speed slope correction factor corresponding to the engine cooling water temperature includes:

And acquiring a torque gradient correction factor corresponding to the engine cooling water temperature from a third mapping relation as the second torque gradient adjustment factor, and acquiring a rotation speed gradient correction factor corresponding to the engine cooling water temperature from a fourth mapping relation as the second rotation speed gradient correction factor, wherein the third mapping relation stores the corresponding relation between different engine cooling water temperatures and the torque gradient correction factor, the engine cooling water temperatures and the torque gradient correction factor are in positive correlation, the fourth mapping relation stores the corresponding relation between different engine cooling water temperatures and the rotation speed gradient correction factor, and the engine cooling water temperatures and the rotation speed gradient correction factor are in positive correlation.

6. The method of claim 2, wherein the target range extender auxiliary condition comprises ‌ a fuel evaporation diagnostic pump leak detection condition, and wherein activating the target range extender auxiliary condition if the real-time operating condition information satisfies a preset activation condition of the target range extender auxiliary condition comprises:

Activating the fuel evaporation diagnosis pump leakage detection working condition if the real-time operation working condition information meets the first activation conditions, wherein the first activation conditions comprise at least one of a preset state of a whole vehicle high-voltage system of the vehicle, a preset first vehicle speed threshold value or less of the vehicle, a preset first electric quantity threshold value or more of battery pack electric quantity of the vehicle, a preset first power threshold value or more of battery pack discharge power limit of the vehicle and a preset operation state of an engine of the vehicle;

And if the real-time operation condition information meets the preset exit condition of the auxiliary working condition of the target range extender, exiting the auxiliary working condition of the target range extender, wherein the method comprises the following steps:

And if the real-time operation condition information meets any first exit condition, exiting the fuel evaporation diagnosis pump leakage detection condition, wherein the first exit condition comprises at least one of exiting the preset state of the whole vehicle high-voltage system of the vehicle, enabling the speed of the vehicle to be larger than or equal to a preset second vehicle speed threshold value, enabling the battery pack electric quantity of the vehicle to be smaller than or equal to a preset second electric quantity threshold value, and enabling the battery pack discharge power limit of the vehicle to be smaller than or equal to a preset second power threshold value, wherein the preset second vehicle speed threshold value is larger than the preset first vehicle speed threshold value, the preset second electric quantity threshold value is smaller than the preset first electric quantity threshold value, and the preset second power threshold value is smaller than the preset first power threshold value.

7. The method of claim 6, wherein the obtaining the engine target torque and the generator target speed corresponding to the target range extender assist condition comprises:

acquiring the ratio between the actual rotation speed of a generator and the actual rotation speed of an engine of the vehicle;

And taking the preset first engine target torque as the engine target torque corresponding to the leakage detection working condition of the fuel evaporation diagnosis pump, and obtaining the generator target rotating speed corresponding to the leakage detection working condition of the fuel evaporation diagnosis pump according to the ratio and the first preset engine rotating speed.

8. The method of claim 2, wherein the target range extender auxiliary condition comprises ‌ integrated catalyst diagnostic auxiliary conditions, and wherein activating the target range extender auxiliary condition if the real-time operating condition information satisfies a preset activation condition of the target range extender auxiliary condition comprises:

Activating ‌ the integrated catalyst to diagnose an auxiliary working condition if the real-time operation working condition information meets second activation conditions, wherein the second activation conditions comprise at least one of that a whole vehicle high-voltage system of the vehicle enters a preset state, the speed of the vehicle is smaller than or equal to a preset third speed threshold value, the battery pack electric quantity of the vehicle is larger than or equal to a preset third electric quantity threshold value, the battery pack discharge power limit of the vehicle is larger than or equal to a preset third power threshold value and the engine of the vehicle is in a preset operation state;

And if the real-time operation condition information meets any second exit condition, exiting the integrated catalyst to diagnose an auxiliary condition, wherein the second exit condition comprises at least one of exiting the preset state of the whole vehicle high-voltage system of the vehicle, enabling the speed of the vehicle to be larger than or equal to a preset fourth vehicle speed threshold value, enabling the battery pack capacity of the vehicle to be smaller than or equal to a preset fourth electric capacity threshold value, and enabling the battery pack discharging power limit of the vehicle to be smaller than or equal to a preset fourth power threshold value, wherein the preset fourth vehicle speed threshold value is larger than the preset third vehicle speed threshold value, the preset fourth electric capacity threshold value is smaller than the preset third electric capacity threshold value, and the preset fourth power threshold value is smaller than the preset third power threshold value.

9. The method of claim 8, wherein the obtaining the engine target torque and the generator target speed corresponding to the target range extender assist condition comprises:

And taking the preset second engine target torque as the engine target torque corresponding to the ‌ integrated catalyst diagnosis auxiliary working condition, and obtaining the generator target rotating speed corresponding to the ‌ integrated catalyst diagnosis auxiliary working condition according to the ratio and the second preset engine rotating speed.

10. The method of claim 2, wherein the target range extender auxiliary condition comprises an integrated catalyst heating auxiliary condition, and wherein activating the target range extender auxiliary condition if the real-time operating condition information satisfies a preset activation condition of the target range extender auxiliary condition comprises:

activating the ‌ integrated catalyst to heat an auxiliary working condition if the real-time operation working condition information meets the third activation conditions, wherein the third activation conditions comprise at least one of that a whole vehicle high-voltage system of the vehicle enters a preset state, the battery pack capacity of the vehicle is larger than or equal to a preset fifth capacity threshold and smaller than or equal to a preset sixth capacity threshold, the battery pack discharge power limit of the vehicle is larger than or equal to a preset fifth power threshold, and the engine of the vehicle is in a preset operation state, and the preset sixth capacity threshold is larger than the preset fifth capacity threshold;

And if the real-time operation condition information meets any one of third exit conditions, exiting the integrated catalyst heating auxiliary condition, wherein the third exit conditions comprise that a whole vehicle high-voltage system of the vehicle exits a preset state, the battery pack electric quantity of the vehicle is smaller than or equal to a preset seventh electric quantity threshold value, the battery pack electric quantity of the vehicle is larger than or equal to a preset eighth electric quantity threshold value, and the battery pack discharge power limit of the vehicle is smaller than or equal to at least one of a preset sixth power threshold value, wherein the preset seventh electric quantity threshold value is smaller than the preset fifth electric quantity threshold value, the preset eighth electric quantity threshold value is larger than the preset sixth electric quantity threshold value, and the preset sixth power threshold value is smaller than the preset fifth power threshold value.

11. The method of claim 10, wherein the obtaining the engine target torque and the generator target speed corresponding to the target range extender assist condition comprises:

Obtaining engine torque corresponding to the engine cooling water temperature of the vehicle and the vehicle speed of the vehicle from a fifth mapping relation, wherein the fifth mapping relation stores the corresponding relation between different engine cooling water temperatures and different vehicle speeds and different engine torques, the engine torque is in a negative correlation relation with the engine cooling water temperature and the vehicle speed, and the engine torque is provided with a torque minimum value;

Obtaining a target engine speed corresponding to an engine cooling water temperature of the vehicle and a vehicle speed of the vehicle from a sixth mapping relation, wherein the sixth mapping relation stores the corresponding relation between different engine cooling water temperatures and vehicle speeds and different engine speeds, the engine speed, the engine cooling water temperature and the vehicle speed are in positive correlation, and the engine torque is provided with a speed maximum value;

And obtaining the target rotating speed of the generator corresponding to the heating auxiliary working condition of the integrated catalyst according to the ratio of the actual rotating speed of the generator of the vehicle to the actual rotating speed of the engine and the target rotating speed of the engine.

12. A vehicle control unit comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method according to any one of claims 1 to 11 when executing the computer program.