CN120039244A

CN120039244A - Power control method, device and system and vehicle

Info

Publication number: CN120039244A
Application number: CN202510512507.3A
Authority: CN
Inventors: 王瑞光; 刘义强; 高阳; 黄孝奎; 郭建涛; 俞越; 李延斌; 井俊超
Original assignee: Geely Changxing Automatic Transmission Co ltd; Zhejiang Geely Holding Group Co Ltd; Ningbo Geely Royal Engine Components Co Ltd; Aurobay Technology Co Ltd
Current assignee: Geely Changxing Automatic Transmission Co ltd; Zhejiang Geely Holding Group Co Ltd; Ningbo Geely Royal Engine Components Co Ltd; Aurobay Technology Co Ltd
Priority date: 2025-04-23
Filing date: 2025-04-23
Publication date: 2025-05-27
Anticipated expiration: 2045-04-23
Also published as: CN120039244B

Abstract

The application provides a power control method, a device, a system and a vehicle, wherein the scheme is applied to the vehicle, the power system of the vehicle comprises an engine, the current required output power of the engine is determined based on the current charge state of a power battery of the vehicle, the current operation condition of the vehicle and at least partial data of the operation condition of the vehicle in a preset time period in the future, the target output power of the engine is determined based on the current required output power of the engine under the condition that the current required output power of the engine is larger than the rated output power of the engine, and the target output power is larger than the rated output power of the engine so as to control the engine to operate based on the target output power, thereby effectively reducing the probability that the vehicle cannot effectively get out of the order due to insufficient power by controlling the super-power operation of the engine under the special conditions of passing through pits, high roadbeds, climbing long slopes and the like, and further improving the operation safety of the vehicle.

Description

Power control method, device and system and vehicle

Technical Field

The present application relates to the field of vehicles, and in particular, to a power control method, device, system, and vehicle.

Background

The engine is a core component in the power system of fuel vehicles and hybrid vehicles, and thus, the power output of the engine is an important factor affecting the power performance of the vehicle.

At present, an engine is generally configured with rated output power to limit the power output of the engine through the rated output power, and under special working conditions such as pit passing, high roadbed, long climbing and the like, the vehicle is easy to get rid of the problem due to insufficient power, so that the running safety of the vehicle cannot be ensured.

Disclosure of Invention

In order to solve the technical problems, the application provides a power control method, a device, a system and a vehicle, which are used for solving the problem that the vehicle is easy to be out of order due to insufficient power under special working conditions such as pit passing, high roadbed, long climbing and the like in the prior art.

In order to achieve the technical purpose, the embodiment of the application provides the following technical scheme:

In a first aspect, embodiments of the present disclosure provide a power control method applied to a vehicle, a power system of the vehicle including an engine, the method including:

Determining a current demanded output power of the engine based on target data, the target data including at least a portion of data of a current state of charge of a power battery of the vehicle, a current operating condition of the vehicle, and an operating condition of the vehicle within a predetermined length of time in the future;

If the current required output power of the engine is larger than the rated output power of the engine, determining the target output power of the engine based on the current required output power of the engine, wherein the target output power is larger than the rated output power of the engine;

and controlling the engine to run based on the target output power.

In one embodiment, the vehicle's powertrain further includes at least one electric machine;

The determining the current required output power of the engine based on the target data includes:

determining a current required power of the vehicle and a target working mode of the power system based on the target data;

Determining a current required output power of the engine and a current required output power of each motor based on the current required power of the vehicle and a target operating mode of the power system, wherein the current required output power of the motor is used for controlling the motor to operate.

In one embodiment, the determining the current required output power of the engine and the current required output power of each of the motors based on the current required power of the vehicle and the target operation mode of the power system includes:

determining a target subsystem in the power system based on a target operating mode of the power system, the target subsystem including the engine and/or the electric machine;

if the current required power is greater than the total rated output power of the power system, determining the current required output power of each target subsystem according to a preset frequency based on the current required power of the vehicle, wherein the total rated output power of the power system comprises the sum of rated output powers of target subsystems for providing energy in each target subsystem;

Wherein the current demanded output power of at least some of the target subsystems is greater than the nominal output power of the respective target subsystem, the predetermined frequency is greater than a target frequency, the target frequency including a maximum control frequency for the power system if the demanded power of the vehicle is less than or equal to the total nominal output power of the power system.

In one embodiment, the determining the current required output power of each of the target subsystems according to a predetermined frequency based on the current required power of the vehicle includes:

Determining the current required output power of each target subsystem according to the preset frequency based on the current required power of the vehicle, the running state of the target subsystem and the running state of a thermal management system until each target subsystem does not meet the overpower running condition;

wherein the thermal management system is used for performing thermal management on the power system.

In one embodiment, the operational state of the target subsystem includes parameter values for respective safety monitoring parameters of the target subsystem, and the operational state of the thermal management system includes parameter values for respective operating parameters of the thermal management system;

The method for determining whether the target subsystem meets the super power operation condition comprises the following steps:

if the parameter value of at least one safety monitoring parameter of the target subsystem exceeds a corresponding preset range and/or the parameter value of at least one working parameter of the thermal management system exceeds a corresponding preset range, determining that the target subsystem does not meet the overpower operation condition;

and if the parameter values of all the safety monitoring parameters of the target subsystem do not exceed the corresponding preset range, and the parameter values of all the working parameters of the thermal management system do not exceed the corresponding preset range, determining that the target subsystem meets the overpower operation condition.

In one embodiment, the determining the target output power of the engine based on the current demanded output power of the engine includes:

determining a target output power of the engine based on a current demanded output power of the engine and an output power limit of the engine at each predetermined operating time period;

the output power limit value of the engine under each preset operation time is larger than the rated output power of the engine, and the output power limit value of the engine under each preset operation time is matched with the hardware of the engine.

In one embodiment, the method for determining the output power limit of the engine at each predetermined operating time period comprises:

determining an output power limit value of the engine under each preset operation time based on the required continuous operation time of the engine under a target working condition and the required output power under the required continuous operation time;

Or respectively determining the output power limit value of the engine under each preset operation time based on the instantaneous output power of the motor in the power system under each preset operation time.

In a second aspect, embodiments of the present disclosure provide a power control apparatus for use in a vehicle whose power system includes an engine, the apparatus comprising:

A first processing module configured to determine a current demanded output power of the engine based on target data, the target data including at least a portion of data of a current state of charge of a power battery of the vehicle, a current operating condition of the vehicle, and an operating condition of the vehicle within a predetermined length of time in the future;

The second processing module is used for determining target output power of the engine based on the current required output power of the engine if the current required output power of the engine is larger than the rated output power of the engine, wherein the target output power is larger than the rated output power of the engine;

and a third processing module for controlling the engine to run based on the target output power.

In a third aspect, the present disclosure provides a power control system including a monitoring system for monitoring at least a portion of data in a current state of charge of a power battery of the vehicle, a current operating condition of the vehicle, and an operating condition of the vehicle within a predetermined length of time in the future, and a controller;

the controller comprises at least one processor and at least one memory, the memory having stored therein a computer program which, when executed by the processor, implements the power control method as described in any one of the preceding claims.

In a fourth aspect, embodiments of the present disclosure provide a vehicle comprising a power control system as described above for controlling the operation of a powertrain of the vehicle, the powertrain comprising an engine.

In a fifth aspect, embodiments of the present disclosure provide a computer-readable storage medium having a computer program stored thereon, which when executed by a processor, implements a power control method as set forth in any one of the above.

In a sixth aspect, embodiments of the present description provide a computer program product or a computer program, the computer program product comprising a computer program stored in a computer readable storage medium, a processor of the computer device reading the computer program from the computer readable storage medium, the processor implementing the power control method as described in any one of the above when executing the computer program.

According to the technical scheme, the power control method, the device and the system are applied to the vehicle, the power system of the vehicle comprises the engine, the current required output power of the engine is determined based on at least partial data of the current charge state of the power battery of the vehicle, the current operation working condition of the vehicle and the operation working condition of the vehicle within the preset time length in the future, the target output power of the engine is determined based on the current required output power of the engine under the condition that the current required output power of the engine is larger than the rated output power of the engine, the target output power is larger than the rated output power of the engine, and the engine is controlled to operate based on the target output power, so that the probability that the vehicle cannot be effectively out of order due to insufficient power can be effectively reduced by controlling the super-power operation of the engine under the special working conditions of passing through pits, high roadbeds, climbing long slopes and the like, and the operation safety of the vehicle is improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present application, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic flow chart of a power control method according to an embodiment of the present disclosure.

Fig. 2 is a schematic flow chart of another power control method according to an embodiment of the present disclosure.

Fig. 3 is a schematic structural diagram of a power control device according to an embodiment of the present disclosure.

Fig. 4 is a schematic structural diagram of a power control system according to an embodiment of the present disclosure.

Detailed Description

Unless defined otherwise, technical or scientific terms used in the embodiments of the present specification should be given the ordinary meaning as understood by one of ordinary skill in the art to which the present specification belongs. The terms "first," "second," and the like, as used in the embodiments of the present disclosure, do not denote any order, quantity, or importance, but rather are used to avoid intermixing of the components.

Throughout the specification, unless the context requires otherwise, the word "plurality" means "at least two", and the word "comprising" is to be construed as open, inclusive meaning, i.e. as "comprising, but not limited to. In the description of the present specification, the terms "one embodiment," "some embodiments," "example embodiments," "examples," "particular examples," or "some examples," etc., are intended to indicate that a particular feature, structure, material, or characteristic associated with the embodiment or example is included in at least one embodiment or example of the present specification. The schematic representations of the above terms do not necessarily refer to the same embodiment or example.

The technical solutions of the embodiments of the present specification will be clearly and completely described below with reference to the drawings in the embodiments of the present specification, and it is apparent that the described embodiments are only some embodiments of the present specification, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are intended to be within the scope of the present disclosure.

SUMMARY

As described in the background art, an engine is a core component in a power system of a fuel vehicle as well as a hybrid vehicle, and thus, a power output of the engine is an important factor affecting power performance of the vehicle.

Currently, an engine is generally configured with a rated output power to limit the power output of the engine by the rated output power, i.e., the maximum output power of the engine does not exceed its rated output power. However, under special working conditions such as pit passing, high roadbed, long climbing and the like, the vehicle is easy to cause that the vehicle cannot effectively get rid of the trouble due to insufficient power, so that the running safety of the vehicle cannot be ensured.

In order to solve the problem that the vehicle cannot effectively get rid of the trapping due to insufficient power in the traditional method under special working conditions such as pit passing, high roadbed and long climbing, the application provides a power control scheme which is applied to the vehicle, a power system of the vehicle comprises an engine, the current required output power of the engine is determined based on at least partial data in the current charge state of a power battery of the vehicle, the current running working condition of the vehicle and the running working condition of the vehicle in the future preset time, and the target output power of the engine is determined based on the current required output power of the engine under the condition that the current required output power of the engine is larger than the rated output power of the engine, so that the engine running is controlled based on the target output power, the probability that the vehicle cannot effectively get rid of the trapping due to insufficient power can be effectively reduced by controlling the super-power running of the engine under the special working conditions such as pit passing, high roadbed and long climbing, and the like, and the running safety of the vehicle is improved.

Based on the above inventive concept, the power control method provided in the embodiments of the present specification will be exemplarily described below.

Exemplary method

The embodiment of the present disclosure provides a power control method applied to a vehicle, where a power system of the vehicle includes an engine, as shown in fig. 1, and the method includes:

S101, determining the current required output power of the engine based on target data, wherein the target data comprises at least partial data of the current state of charge of a power battery of the vehicle, the current operation condition of the vehicle and the operation condition of the vehicle in a future preset time period.

Specifically, the power system of the vehicle may include an engine, and may also include both an engine and a motor, i.e., the vehicle may be a fuel-fired vehicle, and may also be a hybrid vehicle. For a fuel-fired vehicle, the power control method of the application may be performed by an engine control unit, and for a hybrid vehicle, the power control method of the application may be performed by a power control unit of the vehicle.

The target data may include a current operating condition of the vehicle, and in implementation, the current operating condition of the vehicle may be determined based on a current driving parameter (e.g., an accelerator parameter, a brake parameter, a gear parameter, etc.) and/or a current road condition of the vehicle, for example, the current operating condition may be a long-climbing condition, a high-roadbed condition, a pit passing condition, etc.

The target data may also include operating conditions of the vehicle for a predetermined length of time in the future, and in practice, the operating conditions of the vehicle for the predetermined length of time in the future may be determined based on current driving parameters of the vehicle (e.g., throttle parameters, brake parameters, gear parameters, etc.) and/or road conditions ahead of the vehicle.

The current road condition of the vehicle and the road condition in front of the vehicle may be detected based on a monitoring system, which may include an image acquisition device, a radar, or the like, for example.

In addition, when the vehicle is a hybrid vehicle, the target data may also include a current state of charge of the power battery of the vehicle, and in practice, the power control unit may receive in real time the state of charge of the power battery sent by the battery management system of the vehicle.

The current required output power of the engine is the power which is required to be output by the engine at the current moment to meet the power requirement of the vehicle.

In implementations, the current demanded output power of the engine may be determined based on target data, which may include at least some of current state of charge of the power battery, current operating conditions of the vehicle, and operating conditions of the vehicle over a predetermined length of time in the future. For example, when the vehicle is a fuel-fired vehicle, the current demanded output power of the engine may be determined based on a current operating condition of the vehicle and/or an operating condition of the vehicle for a predetermined length of time in the future, and when the vehicle is a hybrid vehicle, the current demanded output power of the engine may be determined based on a current state of charge of the power battery and a current operating condition of the vehicle and/or an operating condition of the vehicle for a predetermined length of time in the future.

Wherein the current demand power of the vehicle may be determined based on the target data and the current demand output power of the engine may be determined based on the current demand power of the vehicle. For example, when the vehicle is a fuel vehicle, the current required power of the vehicle may be directly used as the current required output power of the engine, and when the vehicle is a hybrid vehicle, the power distribution may be performed on the engine and the motor based on the current required power of the vehicle, for example, the target working mode of the power system may be determined based on the target data, and the power distribution may be performed on the engine and the motor according to the target working mode, so as to obtain the current required power of the engine.

S102, if the current required output power of the engine is larger than the rated output power of the engine, determining the target output power of the engine based on the current required output power of the engine, wherein the target output power is larger than the rated output power of the engine.

Specifically, if the current required output power of the engine is greater than the rated output power of the engine, the target output power of the engine can be determined based on the current required output power of the engine, the target output power of the engine is greater than the rated output power of the engine, and the target output power of the engine can be used for controlling the engine to run, namely, when the current required output power of the engine is greater than the rated output power of the engine, the engine can be controlled to run with super power, so that the engine can output larger power in a short time, the power requirements of vehicles under special working conditions such as pit passing, high roadbed, climbing long slope and the like are met, and the probability that the vehicles cannot get out of the trap effectively due to insufficient power under the special working conditions such as pit passing, high roadbed, climbing long slope and the like can be effectively reduced.

It can be understood that during the process of the super power operation of the engine, the safety parameters of the engine, the super power operation time length and the like can be monitored in real time, and when the engine does not meet the super power operation condition, the output power of the engine is reduced so as to meet the operation safety of the engine.

In addition, if the current required output power of the engine is smaller than or equal to the rated output power of the engine, the engine can be directly controlled to output power based on the current required output power of the engine so as to meet the power requirement of the vehicle.

S103, controlling the engine to run based on the target output power.

Specifically, in the process of controlling the engine to operate at the super power based on the target output power, the intake air amount pressure, the fuel pressure and the like of the engine can be controlled to be increased, the ignition advance angle of the engine can be controlled to be increased, the EGR (Exhaust Gas Recirculation ) rate of the engine can be controlled to be reduced, and the engine can be specifically set according to actual requirements.

Therefore, under special working conditions such as pit passing, high roadbed, long climbing and the like, the possibility that the vehicle cannot effectively get rid of the trouble due to insufficient power can be effectively reduced by controlling the super-power operation of the engine, and the safety of the vehicle operation is further improved.

In one possible embodiment, the power system of the vehicle further comprises at least one electric machine;

In particular, the power system of the vehicle may also comprise at least one electric machine, e.g. a drive motor, a generator, etc., i.e. the vehicle is a hybrid vehicle.

If the vehicle is a hybrid vehicle, the current demand power of the vehicle and the target operating mode of the powertrain may be determined based on the target data in determining the current demand output power of the engine based on the target data.

The operating modes of the powertrain may include electric-only mode (i.e., vehicle driven by the motor only, engine not operating), hybrid mode (i.e., vehicle driven by both the engine and the motor), engine-driven mode (i.e., vehicle driven by the motor only, motor not operating), charging mode (i.e., energy provided by the engine is used to both drive the vehicle and charge the power battery provided to the motor), and the like.

In practice, the target operating mode of the power system may be determined based on the target data and a predetermined correspondence, which may include a correspondence between a current operating condition of the vehicle, an operating condition of the vehicle within a predetermined length of time in the future, a current state of charge of the power battery, and the target operating mode of the power system. For example, when the current operation condition of the vehicle is a special condition such as a long climbing condition, a pit passing condition or a high roadbed condition, if the current charge state of the power battery meets the preset charge state, the target operation mode of the power system may be a hybrid power mode, if the current charge state of the power battery does not meet the preset charge state, the target operation mode of the power system may be an engine driving mode, the preset charge state may be the charge state of the power battery when the residual electric quantity of the power battery can normally operate the power machine, and when the operation condition of the vehicle in the future for a preset time period is a long climbing condition, if the current charge state of the power battery represents that the current residual electric quantity of the power battery is smaller than the preset electric quantity, the target operation mode of the power system may be a charging mode, and if the current charge state of the power battery represents that the current residual electric quantity of the power battery is larger than or equal to the preset electric quantity, the target operation mode of the power system may be an engine driving mode.

The current demand power of the vehicle may include current driving demand power of the vehicle, and may further include current charging demand power of the vehicle, for example, when the target working mode of the power system is a charging mode, the current demand power of the vehicle may be a sum of the current driving demand power of the vehicle and the current charging demand power of the vehicle, and when the target working mode of the power system is a pure electric mode, a hybrid mode, or an engine driving mode, the current demand power of the vehicle may be the current driving demand power of the vehicle.

In implementation, the current required output power of the engine and the current required output power of each motor can be determined based on the current required power of the vehicle and the target working mode of the power system, so that the power requirement of the vehicle can be met to the greatest extent while the effective operation of the power system is ensured, and the probability that the vehicle cannot get rid of poverty due to insufficient power under special working conditions such as pit passing, high roadbed, climbing long slope and the like can be effectively reduced.

It will be appreciated that the current demanded output power of the motor may be used to control motor operation, for example, when the current demanded output power of the motor is less than or equal to the rated output power of the motor, motor operation may be controlled in accordance with the current demanded output power of the motor, and when the current demanded output power of the motor is greater than the rated output power of the motor, motor operation may be controlled based on the current demanded output power of the motor and the instantaneous power of the motor, which is greater than the rated output power of the motor.

In one possible embodiment, the determining the current required output power of the engine and the current required output power of each of the motors based on the current required power of the vehicle and the target operation mode of the power system includes:

Specifically, the target subsystem may be a subsystem of the powertrain that is to be operated, and may include an engine and/or an electric machine. The subsystem to be operated in the power system may be determined as a target subsystem based on a target working mode of the power system, for example, the target subsystem may include an engine and a generator when the target working mode is a charging mode, the target subsystem may include a driving motor when the target working mode is a pure electric mode, the target subsystem may include the driving motor and the engine when the target working mode is a hybrid mode, and the target subsystem may include the engine when the target working mode is an engine driving mode.

The total equivalent output power of the powertrain system may include a sum of rated output powers of the target subsystems for providing energy among the respective target subsystems. For example, a target subsystem for providing energy may include an engine and a drive motor, while a generator is used for conversion and transfer of energy.

If the current required power of the vehicle is greater than the total rated output power of the power system, the current operation working condition of the vehicle can be represented as special working conditions such as pit passing, high roadbed, long climbing and the like, or the operation working condition of the vehicle in the preset time length in the future is special working conditions such as pit passing, high roadbed, long climbing and the like, and the power battery energy is insufficient, at this time, the power system can be controlled to operate under the condition that the power is in the super power, namely, at least part of the current required output power of the target subsystem is greater than the rated output power of the corresponding target subsystem. It will be appreciated that the current demanded output power may be 0 for subsystems other than the target subsystem in the powertrain.

In practice, the current required output power of each target subsystem may be determined at a predetermined frequency, the predetermined frequency being greater than the target frequency. The target frequency may include a maximum control frequency in controlling the powertrain in a case where the required power of the vehicle is less than or equal to the total rated output power of the powertrain. Thus, over-frequency control of the powertrain can be achieved in the event that the demanded power of the vehicle is greater than the total rated output power of the powertrain. By performing over-frequency control on the power system, the current required output power of each target subsystem can be timely updated according to the running state of the power system, so that short-time over-power running of the power system can be realized while the effective running of the power system is ensured, and the probability that a vehicle cannot get rid of poverty effectively due to insufficient power under special working conditions such as passing a pit, high roadbed, climbing a long slope and the like is further reduced.

In a possible implementation manner, the determining the current required output power of each target subsystem according to the preset frequency based on the current required power of the vehicle includes:

In particular, for any target subsystem, the operating state of the target subsystem may be used to characterize the operating performance and health of the target subsystem.

The thermal management system may be used to thermally manage each subsystem in the power system to ensure that each subsystem operates within a predetermined temperature range to avoid overheating or overcooling. The operating state of the thermal management system may include the operating state of various components (e.g., fans, water pumps, oil pumps, etc.) in the thermal management system.

In the process of determining the current required output power of each target subsystem at each time, the current required power of the vehicle, the running state of each target subsystem and the running state of the thermal management system can be comprehensively considered, and the power distribution is carried out on each target subsystem according to the current required power of the vehicle, the running state of each target subsystem and the running state of the thermal management system so as to obtain the current required output power of each target subsystem. It will be appreciated that the actual output power of each target subsystem may also be taken into account in the power allocation of each target subsystem.

In implementation, in the process of distributing power to each target subsystem according to the current required power of the vehicle, the running state of each target subsystem and the running state of the thermal management system, whether each target subsystem meets the overpower running condition or not can be determined based on the running state of each target subsystem and the running state of the thermal management system, for the target subsystem meeting the overpower running condition, the current required output power of the target subsystem can be determined to be greater than the rated output power of the target subsystem, and for the target subsystem not meeting the overpower running condition, the current required output power of the target subsystem can be determined to be less than or equal to the rated output power of the target subsystem, so that the overpower output of the power system can be realized while the safe and effective running of each target subsystem is ensured.

Alternatively, when the plurality of target subsystems all meet the super power operation condition, power distribution may be performed on each target subsystem based on the super power operation priority of each target subsystem that meets the super power operation condition. For example, when the engine and the driving motor both meet the overpower operation condition, the overpower operation priority of the engine and the driving motor may be determined based on the current state of charge of the power battery, if the current state of charge of the power battery meets the predetermined state of charge, the overpower operation priority of the driving motor is higher than the overpower operation priority of the engine, that is, the driving motor is preferentially overpower operated, and if the current required power of the vehicle still cannot be met when the driving motor is in overpower operation, the engine and the driving motor are simultaneously overpower operated. In addition, when the plurality of target subsystems meet the super-power operation condition, the power distribution can be performed on each target subsystem based on the type of each target subsystem meeting the super-power operation condition. For example, when the engine and the generator both meet the overpower operation condition, the present demand output power of the generator may be determined based on the present charge demand power of the present demand power of the vehicle, and the present demand output power of the engine may be determined based on the present demand output power of the generator and the present drive demand power of the present demand power of the vehicle.

When all the target subsystems do not meet the overpower operation condition, the rated output power of each target subsystem can be used as the current required output power of each target subsystem, and meanwhile, the control of the power system according to the preset frequency can be stopped. It will be appreciated that the powertrain super-power operation may also be controlled again after a predetermined time interval.

In a possible embodiment, the operating state of the target subsystem includes parameter values of respective safety monitoring parameters of the target subsystem, and the operating state of the thermal management system includes parameter values of respective operating parameters of the thermal management system;

Specifically, for any target subsystem, the safety monitoring parameters of the target subsystem may be used to characterize the operating performance and health of the target subsystem, for example, the safety monitoring parameters of the engine may include knock parameters, exhaust gas temperature, coolant temperature, oil temperature, etc., and the safety monitoring parameters of the drive motor and generator may include coolant temperature, oil temperature, current, voltage, etc.

The operating parameters of the thermal management system may include operating parameters of various components of the thermal management system, for example, fan speed, water pump speed, oil pump speed, etc.

In implementation, for any target subsystem, in determining whether the target subsystem meets the overpower operation condition, a first comparison result of a parameter value of each safety monitoring parameter of the target subsystem and a predetermined range of a corresponding safety monitoring parameter may be obtained, and a second comparison result of a parameter value of each operating parameter of the thermal management system and a predetermined range of a corresponding operating parameter may be obtained, and based on the first comparison result and the second comparison result, whether the target subsystem meets the overpower operation condition may be determined, for example, if the parameter value of each safety monitoring parameter of the target subsystem does not exceed the predetermined range of the corresponding safety monitoring parameter, and the parameter value of each operating parameter of the thermal management system does not exceed the predetermined range of the corresponding operating parameter, then it is determined that the target subsystem meets the overpower operation condition. And if the parameter value of at least one safety monitoring parameter of the target subsystem exceeds the preset range of the corresponding safety monitoring parameter and/or the parameter value of at least one working parameter of the thermal management system exceeds the preset range of the corresponding working parameter, determining that the target subsystem does not meet the overpower operation condition.

Therefore, the method provided by the embodiment of the application can effectively ensure the running performance and the safety of the power system in the process of the super-power running of the power system.

In one possible embodiment, the determining the target output power of the engine based on the current required output power of the engine includes:

Specifically, the output power limit of the engine for at least one predetermined operating time period may be preconfigured, the predetermined operating time period may be less than a predetermined value for any predetermined operating time period, for example, the predetermined operating time period may be 5s, 10s, etc., and the output power limit for the predetermined operating time period may be greater than the rated output power of the engine. It will be appreciated that the output power limit may be inversely related to the predetermined length of time, i.e., the longer the predetermined length of time, the smaller the output power limit for the predetermined length of time, the shorter the predetermined length of time, and the greater the output power limit for the predetermined length of time.

In practice, when the current demanded output power of the engine is greater than the rated output power of the engine, the target output power of the engine may be determined based on the current demanded output power of the engine and the output power limit of the engine at each predetermined operating time period. For example, the current required output power of the engine may be compared with a maximum output power limit value among the respective output power limit values corresponding to the engine, and if the current required output power of the engine is smaller than the maximum output power limit value, the current required output power of the engine is determined as the target output power of the engine, and if the current required output power of the engine is greater than or equal to the maximum output power limit value, the maximum output power limit value is determined as the target output power of the engine. In addition, the current required output power of the engine can be compared with the output power limit value corresponding to the target operation duration in each preset operation duration, if the current required output power of the engine is smaller than the output power limit value corresponding to the target operation duration, the current required output power of the engine is determined to be the target output power of the engine, if the current required output power of the engine is larger than or equal to the output power limit value corresponding to the target operation duration, the output power limit value corresponding to the target operation duration is determined to be the target output power of the engine, and the target operation duration is larger than or equal to the estimated required duration corresponding to the current required power of the vehicle, so that short-time super-power operation of the engine can be realized on the premise of ensuring the operation safety of the engine.

The output power limit value of the engine under each preset operation time is matched with the hardware of the engine, for example, the output power limit value of the engine under at least one preset operation time can be determined according to the power output requirements of the engine under different working conditions, and the output power limit value of the engine under at least one preset operation time can be determined according to the configuration data (such as the instantaneous power of the motor) of the motor, so that the hardware of the engine can be configured according to the output power limit value of the engine under each preset operation time, and the safe and effective short-time high-power operation of the engine can be ensured.

In one possible embodiment, the method for determining the output power limit value of the engine under each predetermined operation time period includes:

Specifically, the target operating condition may be an operating condition where the power demand is greatest, i.e., the most severe operating condition, among the respective predetermined operating conditions of the vehicle. In implementation, the required continuous operation time of the engine under the target working condition can be used as a preset operation time, the required output power of the engine under the required continuous operation time is used as the output power limit value of the engine under the preset operation time, meanwhile, the hardware configuration of the engine can be performed on the basis of the required output power of the engine under the required continuous operation time, the output power limit value of the engine under the preset operation time is not required to be used as the rated output power of the engine, and the high-power requirement of the engine under the special working condition can be met on the premise of reducing the hardware cost of the engine.

It will be appreciated that at least one other predetermined operating period may also be determined based on the required output power of the engine for the required duration, and the output power limit of the engine for the other predetermined operating period may be greater than the required duration, and the output power limit of the engine for the other predetermined operating period may be less than the required output power of the engine for the required duration.

In implementation, when the power system of the vehicle does not include the motor, that is, the vehicle is a fuel vehicle, the output power limit value of the engine under each predetermined operation duration may be determined based on the required continuous operation duration of the engine under the target working condition and the required output power of the engine under the required continuous operation duration.

In addition, the output power limit value of the engine under each preset operation time period can be respectively determined based on the instantaneous output power of the motor under each preset operation time period. For example, the predetermined operating time period for the engine corresponds to the same respective predetermined operating time period for the motor, and for any predetermined operating time period, the output power limit of the engine at the predetermined operating time period may be the same as the instantaneous output power of the motor at the predetermined operating time period. Meanwhile, the engine may be configured in hardware based on the output power limit of the engine for each predetermined operating time.

In practice, when the powertrain of the vehicle includes an electric machine, i.e., the vehicle is a hybrid vehicle, the output power limits of the engine for each predetermined operating duration may be determined based on the instantaneous output power of the electric machine for each predetermined operating duration, respectively.

Currently, in order to ensure the maximum power output of the power system for the hybrid vehicle, it is generally set that the rated output power of the engine satisfies the instantaneous output power of the motor, and a higher rated output power requires a higher hardware configuration of the engine, thereby causing a great increase in hardware cost of the engine. The method provided by the embodiment of the application can effectively reduce the hardware cost of the engine on the premise of ensuring the maximum power output of the power system by configuring that the output power limit value of the engine under each preset operation time is matched with the instantaneous output power of the motor under each preset operation time.

The following exemplifies the specific implementation of the power control method of the present application, taking a hybrid vehicle as an example. As shown in fig. 2, the power control method of the present application includes:

S201, determining the current required power of the vehicle and a target working mode of a power system based on the current state of charge of the power battery, the current operation condition of the vehicle and the operation condition of the vehicle within a preset time length in the future;

S202, determining target subsystems in a power system based on a target working mode of the power system, judging whether the current required power of a vehicle is larger than the total rated output power of the power system, if yes, executing a step S203, and if not, executing a step S206, wherein the total rated output power of the power system comprises the sum of rated output powers of target subsystems used for providing energy in all the target subsystems;

S203, determining whether each target subsystem does not meet the overpower operation condition based on the operation state of each target subsystem and the operation state of the thermal management system, if so, executing the step S205, and if not, executing the step S204;

S204, determining the current required output power of each target subsystem according to a preset frequency based on the current required power of the vehicle, the running state of each target subsystem, the running state of the thermal management system and the actual output power of each target subsystem, and executing a step S207, wherein the current required output power of at least part of target subsystems is larger than the rated output power of the corresponding target subsystems, the preset frequency is larger than the target frequency, and the target frequency comprises the maximum control frequency of the power system under the condition that the required power of the vehicle is smaller than or equal to the total rated output power of the power system;

s205, determining the current required output power of each target subsystem based on the rated output power of each target subsystem, and executing step S207;

s206, determining the current required output power of each target subsystem based on a preset strategy, and executing step S207;

s207, determining target output power of each target subsystem based on the current required output power of each target subsystem, and controlling each target subsystem to operate based on the target output power of each target subsystem.

Exemplary apparatus

In one exemplary embodiment of the present specification, there is also provided a power control apparatus applied to a vehicle whose power system includes an engine, as shown in fig. 3, the apparatus including:

A first processing module 301 configured to determine a current required output power of the engine based on target data, where the target data includes at least a portion of data of a current state of charge of a power battery of the vehicle, a current operating condition of the vehicle, and an operating condition of the vehicle within a predetermined length of time in the future;

A second processing module 302, configured to determine a target output power of the engine based on the current required output power of the engine if the current required output power of the engine is greater than the rated output power of the engine, where the target output power is greater than the rated output power of the engine;

a third processing module 303 for controlling the engine operation based on the target output power.

In one possible embodiment, the power system of the vehicle further comprises at least one electric machine, and the first processing module 301 is specifically configured to:

In a possible embodiment, the first processing module 301 is specifically configured to:

In a possible embodiment, the operation state of the target subsystem includes parameter values of respective safety monitoring parameters of the target subsystem, and the operation state of the thermal management system includes parameter values of respective working parameters of the thermal management system, and the first processing module 301 is specifically configured to:

In a possible embodiment, the second processing module 302 is specifically configured to:

In one possible embodiment, the second processing module 302 is further configured to:

The power control device provided in this embodiment belongs to the same application conception as the power control method provided in the above embodiment of the present application, and may execute the power control method provided in any of the above embodiments of the present application, and has the functional module and beneficial effects corresponding to executing the power control method. Technical details not described in detail in this embodiment may be referred to the specific processing content of the power control method provided in the foregoing embodiment of the present application, and will not be described herein.

Exemplary apparatus

In an exemplary embodiment of the present disclosure, there is also provided a power control system, as shown in fig. 4, including a monitoring system 401 and a controller 402, where the monitoring system 401 is configured to monitor at least a portion of data in a current state of charge of a power battery of the vehicle, a current operating condition of the vehicle, and an operating condition of the vehicle within a predetermined length of time in the future;

The controller 402 includes at least one processor and at least one memory having a computer program stored therein that when executed by the processor implements the power control method of any of the embodiments described above.

Exemplary vehicle

In one exemplary embodiment of the present description, there is also provided a vehicle including the power control system of the above embodiment for controlling the operation of a power system of the vehicle, the power system including an engine.

Specifically, the vehicle may be a fuel-fired vehicle or a hybrid vehicle.

Exemplary computer program product and storage Medium

In addition to the methods and apparatus described above, the power control methods provided by the embodiments of the present description may also be a computer program product comprising computer program instructions that, when executed by a processor, cause the processor to perform the steps in the power control methods according to the various embodiments of the present description described in the "exemplary methods" section of the present description.

The computer program product may write program code for performing the operations of embodiments of the present description in any combination of one or more programming languages, including an object oriented programming language such as Java, C++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages.

Furthermore, the present specification embodiment also provides a computer-readable storage medium having stored thereon a computer program that is executed by a processor to perform the steps in the power control method according to the various embodiments of the present specification described in the above-described "exemplary method" section of the present specification.

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, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory. The nonvolatile memory can include Read Only Memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (SYNCHLINK) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), among others.

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 above examples merely represent a few implementations of the present description, which are described in more detail and are not to be construed as limiting the scope of the solutions provided by the examples of the present description. 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 present description, which is within the scope of the present description. Accordingly, the protection scope of the patent should be determined by the appended claims.

Claims

1. A power control method, characterized by being applied to a vehicle whose power system includes an engine, comprising:

and controlling the engine to run based on the target output power.

2. The method of claim 1, wherein the vehicle's powertrain further comprises at least one electric machine;

3. The method of claim 2, wherein the determining the current demanded output power of the engine and the current demanded output power of each of the electric machines based on the current demanded power of the vehicle and a target operating mode of the powertrain system comprises:

4. A method according to claim 3, wherein said determining the current required output power of each of said target subsystems at a predetermined frequency based on the current required power of said vehicle comprises:

5. The method of claim 4, wherein the operating state of the target subsystem comprises parameter values for respective safety monitoring parameters of the target subsystem, and the operating state of the thermal management system comprises parameter values for respective operating parameters of the thermal management system;

6. The method of any one of claims 1 to 5, wherein the determining a target output power of the engine based on a current demanded output power of the engine comprises:

7. The method of claim 6, wherein the determining of the output power limit of the engine at each predetermined operating time period comprises:

8. A power control apparatus, characterized by being applied to a vehicle whose power system includes an engine, comprising:

9. A power control system comprising a monitoring system and a controller, the monitoring system configured to monitor at least a portion of data in a current state of charge of a power battery of the vehicle, a current operating condition of the vehicle, and an operating condition of the vehicle within a predetermined length of time in the future;

The controller comprising at least one processor and at least one memory, the memory having stored therein a computer program which, when executed by the processor, implements the power control method of any one of claims 1 to 7.

10. A vehicle comprising the power control system of claim 9 for controlling operation of a powertrain of the vehicle, the powertrain comprising an engine.