CN115246313A - Transmissions, Hybrid Systems and Vehicles - Google Patents

Abstract

The present disclosure provides a gearbox, a hybrid power system and an automobile. The gearbox includes: a casing, a first transmission mechanism and an input main shaft; the first transmission mechanism is located in the casing, the input main shaft is movably inserted on the casing, and the input main shaft is movably inserted into the casing. The main shaft is used for driving connection with at least one power source; the first speed change mechanism includes: a first sun gear, a plurality of first planetary gears, a first planet carrier, a first ring gear, a first clutch and a second clutch, the first gear The ring is coaxially arranged with the first center wheel, a plurality of first planetary gears are located between the first center wheel and the first ring gear, and all mesh with the first center wheel and the first ring gear, and the first center wheel and the input main shaft Coaxially connected, the first planet carrier is connected to the wheels in a driving manner; the first clutch is respectively connected with the first ring gear and the first planet carrier, and the second clutch is respectively connected with the first ring gear and the housing. The present disclosure can realize the multi-speed speed change adjustment of the planetary gear train, and reduce the cost.

Description

Transmissions, Hybrid Systems and Automobiles

technical field

The present disclosure relates to the technical field of automobiles, in particular to a gearbox, a hybrid power system and an automobile.

Background technique

The hybrid power system is a power system that uses the engine and the motor as the power source, and the engine and the motor jointly drive the vehicle.

In the related art, the hybrid power system includes a gearbox, an engine and a motor, wherein the gearbox includes a planetary gear train, a first main shaft and a second main shaft, and the planetary gear train includes: a sun gear, a planetary gear, a planet carrier and a ring gear, and the gear The ring and the center wheel are coaxially arranged, the planetary wheels are located between the center wheel and the ring gear, and both mesh with the center wheel and the ring gear, and the ring gear is fixed. The first main shaft is in transmission connection with the center wheel, the second main shaft is in transmission connection with the planet carrier, the first main shaft is used for transmission connection with the engine and the motor, and the second main shaft is used for transmission connection with the wheels.

However, this type of planetary gear train has a single speed change mode, which makes it difficult to give full play to the performance of the planetary gear train, and needs to be equipped with multiple main shafts, and the manufacturing cost of the gearbox is relatively high.

SUMMARY OF THE INVENTION

Embodiments of the present disclosure provide a gearbox, a hybrid power system, and an automobile, which can realize multi-gear gear shift adjustment of a planetary gear train and reduce costs. Described technical scheme is as follows:

An embodiment of the present disclosure provides a gearbox, and the gearbox includes: a housing, a first speed change mechanism, and an input main shaft; the first speed change mechanism is located in the housing, and the input main shaft is movably inserted in the On the housing, the input main shaft is used for transmission connection with at least one power source; the first transmission mechanism includes: a first sun gear, a plurality of first planetary gears, a first planet carrier, a first ring gear, a first a clutch and a second clutch, the first ring gear is coaxially arranged with the first sun gear, and the plurality of first planetary gears are located between the first sun gear and the first ring gear, and each It meshes with the first sun gear and the first ring gear, the first sun gear is coaxially connected with the input main shaft, and the first planet carrier is connected with the wheels; the first clutch is respectively connected with the The first ring gear is connected with the first planet carrier, and is used to control the connection or separation of the first ring gear and the first planet carrier, and the second clutch is connected with the first ring gear and the first planet carrier respectively. The casing is connected to control the connection or separation of the first ring gear with the casing.

In another implementation manner of the embodiment of the present disclosure, the flywheel of the first clutch is coaxially connected with the first planet carrier, and the driven plate of the first clutch is coaxially connected with the first ring gear ; The flywheel of the second clutch is coaxially connected with the first ring gear, and the driven plate of the second clutch is connected with the housing.

In an implementation manner of an embodiment of the present disclosure, the first transmission mechanism further includes a ring gear, the ring gear is coaxially connected with the first planet carrier, and the ring ring and the first clutch are respectively located at On both sides of the first planetary wheel, the gear ring is in transmission connection with the wheel.

In another implementation manner of the embodiment of the present disclosure, the input main shaft includes a first section and a second section, and the first section and the second section are coaxially spaced; the gearbox further includes a second A speed change mechanism and a third clutch, both of the second speed change mechanism and the third clutch are located in the housing; the second speed change mechanism has an input portion and an output portion, and the input portion is connected to the second-stage transmission The output part is used for transmission connection with the generator, the first center wheel is coaxially connected with the first segment, and the third clutch is respectively connected with the first segment and the second segment.

In another implementation manner of the embodiment of the present disclosure, the second transmission mechanism includes: a second sun gear, a second planet carrier, a plurality of second planetary gears, a second ring gear, a fourth clutch and a fifth clutch , the second ring gear is arranged coaxially with the second sun gear, the plurality of second planetary gears are located between the second sun gear and the second ring gear, and are all connected to the second sun gear The center wheel meshes with the second ring gear, the second center wheel is coaxially connected with the input main shaft, and the second planet carrier is used for transmission connection with the generator mechanism; the fourth clutch is respectively connected with the first The second ring gear is connected to the second planet carrier, and is used to control the connection or separation of the second ring gear and the second planet carrier, and the fifth clutch is respectively connected to the second ring gear and the housing connected, for controlling the connection or separation of the second ring gear with the housing.

In another implementation manner of the embodiment of the present disclosure, the second speed change mechanism includes a gear train, the input gear of the gear train is coaxially connected with the input main shaft, and the output gear of the gear train is used to communicate with the generator Mechanism transmission connection.

An embodiment of the present disclosure provides a hybrid power system, the hybrid power system includes a first power source, a second power source, a power generation mechanism and a gearbox as described above, the first power source is an engine, and the The second power source is a first motor, and the generating mechanism is a second motor; the engine, the first motor and the second motor are all located outside the housing, and the output shaft of the engine and the second motor are The output shafts of a motor are all connected to the input main shaft, and the engine and the first motor are located on both sides of the third clutch, and the output shafts of the second motor are the same as the first planetary carrier. Axes are connected.

In another implementation manner of the embodiments of the present disclosure, the hybrid power system further includes a power supply assembly, the power supply assembly is located outside the housing, and the power supply assembly includes: a battery and two inverters, the two One of the two inverters is connected between the battery and the first motor, and the other of the two inverters is connected between the battery and the second motor.

In another implementation manner of the embodiment of the present disclosure, the hybrid power system further includes a differential, the differential is in drive connection with the first planet carrier, and the differential is used for drive connection with wheels.

An embodiment of the present disclosure provides an automobile. The automobile includes the above-mentioned hybrid power system and an automobile body, and the hybrid power system is located in the automobile body.

The beneficial effects brought by the technical solutions provided by the embodiments of the present disclosure at least include:

In the gearbox of the embodiment of the present disclosure, the power of the power source can be transmitted to the first center wheel of the first speed change mechanism through the input shaft, wherein the first speed change mechanism is provided with a first clutch and a second clutch, and the first clutch can Connect or separate the first ring gear and the first planet carrier, and the second clutch can connect or separate the first ring gear and the housing. When the first clutch connects the first ring gear and the first planet carrier, the first ring gear and the first planet carrier are combined as a whole. At this time, the first sun gear is active, the first planet carrier is driven, and the first sun gear and the first The planet carrier rotates under the first speed ratio; when the second clutch connects the first ring gear and the housing, the first ring gear is fixed, at this time, the first sun gear is active, the first planet carrier is driven, and the first sun gear and The first planet carrier rotates under the second speed ratio. In this way, by controlling the combination of the first clutch or the second clutch, the first planetary carrier can be controlled to output different rotational speeds to drive the wheels to rotate, thereby realizing multi-gear speed change adjustment. Moreover, since the gearbox is only provided with one input shaft, various components in the gearbox are effectively reduced, and the manufacturing cost of the gearbox is reduced.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.

FIG. 1 is a schematic structural diagram of a gearbox provided by an embodiment of the present disclosure;

Fig. 2 is a schematic structural diagram of another gearbox provided by an embodiment of the present disclosure;

Fig. 3 is a schematic structural diagram of a hybrid power system provided by an embodiment of the present disclosure;

Fig. 4 is a schematic diagram of energy transfer in a pure electric mode of a hybrid system provided by an embodiment of the present disclosure;

Fig. 5 is a schematic diagram of energy transfer of a hybrid system in pure electric mode provided by an embodiment of the present disclosure;

Fig. 6 is a schematic diagram of energy transfer of a hybrid system in a hybrid mode provided by an embodiment of the present disclosure;

Fig. 7 is a schematic diagram of energy transfer of a hybrid system in a hybrid mode provided by an embodiment of the present disclosure;

Fig. 8 is a schematic diagram of energy transfer of a hybrid system in a hybrid mode provided by an embodiment of the present disclosure;

Fig. 9 is a schematic diagram of energy transfer of a hybrid system in a hybrid mode provided by an embodiment of the present disclosure;

Fig. 10 is a schematic diagram of energy transfer of a hybrid power system provided in an embodiment of the present disclosure under the direct drive mode of the engine;

Fig. 11 is a schematic diagram of energy transfer of a hybrid power system provided in an embodiment of the present disclosure under the direct drive mode of the engine;

Fig. 12 is a schematic diagram of energy transfer of a hybrid power system in an energy recovery mode provided by an embodiment of the present disclosure.

The symbols in the figure are explained as follows:

100. Housing;

10. Engine; 11. First motor; 12. Second motor; 13. Wheel; 14. Differential;

20. Input the spindle; 21. The first section; 22. The second section;

31, the first center wheel; 32, the first planetary wheel; 33, the first planet carrier; 34, the first ring gear; 35, the first clutch; 36, the second clutch; 37, the ring gear; 301, the flywheel; 302 ,Driven disc;

41. The second center wheel; 42. The second planetary carrier; 43. The second planetary wheel; 44. The second ring gear; 45. The fourth clutch; 46. The fifth clutch;

51. The third clutch;

60. Power supply components; 61. Batteries; 62. Inverters;

70, the gear train; 71, the input gear of the gear train; 72, the output gear of the gear train.

Detailed ways

In order to make the purpose, technical solution and advantages of the present disclosure clearer, the implementation manners of the present disclosure will be further described in detail below in conjunction with the accompanying drawings.

Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by those having ordinary skill in the art to which the present disclosure belongs. "First", "second", "third" and similar words used in the specification and claims of this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components . Likewise, words like "a" or "one" do not denote a limitation in quantity, but indicate that there is at least one. Words such as "comprises" or "comprising" and similar terms mean that the elements or items listed before "comprising" or "comprising" include the elements or items listed after "comprising" or "comprising" and their equivalents, and do not exclude other component or object. Words such as "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "Down", "Left", "Right", "Top", "Bottom" and so on are only used to indicate the relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may also be Change accordingly.

Fig. 1 is a schematic structural diagram of a gearbox provided by an embodiment of the present disclosure. As shown in FIG. 1 , the gearbox includes: a housing 100 , a first transmission mechanism and an input spindle 20 .

As shown in FIG. 1 , the first transmission mechanism is located in the housing 100 , and the input main shaft 20 is movably inserted in the housing 100 , and the input main shaft 20 is used for transmission connection with at least one power source.

As shown in Figure 1, the first transmission mechanism includes: a first sun gear 31, a plurality of first planetary gears 32, a first planet carrier 33, a first ring gear 34, a first clutch 35 and a second clutch 36, the first The ring gear 34 is arranged coaxially with the first sun gear 31 , and a plurality of first planetary gears 32 are located between the first sun gear 31 and the first ring gear 34 , and all mesh with the first sun gear 31 and the first ring gear 34 , the first sun wheel 31 is coaxially connected with the input main shaft 20 , and the first planetary carrier 33 is connected with the wheels 13 in transmission.

Among them, the first clutch 35 is connected with the first ring gear 34 and the first planet carrier 33 respectively, and is used to control the connection or separation of the first ring gear 34 and the first planet carrier 33, and the second clutch 36 is connected with the first ring gear 34 respectively. It is connected with the housing 100 and is used for controlling the connection or separation of the first ring gear 34 with the housing 100 .

In the gearbox of the disclosed embodiment, the power of the power source can be transmitted to the first center wheel 31 of the first speed change mechanism through the input main shaft 20, wherein the first speed change mechanism is provided with a first clutch 35 and a second clutch 36, The first clutch 35 can connect or separate the first ring gear 34 and the first planet carrier 33 , and the second clutch 36 can connect or separate the first ring gear 34 and the housing 100 . When the first clutch 35 connects the first ring gear 34 and the first planet carrier 33, the first ring gear 34 and the first planet carrier 33 are combined as a whole, at this time, the first sun gear 31 is active, and the first planet carrier 33 is driven. The first sun gear 31 and the first planet carrier 33 rotate under the first speed ratio; when the second clutch 36 connects the first ring gear 34 and the housing 100, the first ring gear 34 is fixed, and the first sun gear 31 Active, the first planetary carrier 33 is driven, and the first sun wheel 31 and the first planetary carrier 33 rotate under the second speed ratio. In this way, by controlling the combination of the first clutch 35 or the second clutch 36 , the first planetary carrier 33 can be controlled to output different rotational speeds to drive the wheels 13 to rotate, thereby realizing multi-gear transmission adjustment. Moreover, since the gearbox is only provided with one input shaft, various components in the gearbox are effectively reduced, and the manufacturing cost of the gearbox is reduced.

Optionally, as shown in FIG. 1 , both the first clutch 35 and the second clutch 36 include: a flywheel 301 and a driven disk 302 , and the flywheel 301 and the driven disk 302 are configured to be controllably connected or separated.

In the embodiment of the present disclosure, the flywheel 301 of the clutch can move in the driven disk 302 along the axial direction of the driven disk 302 to engage with or separate from the driven disk 302, so as to realize the combination or combination of the flywheel 301 and the driven disk 302 Disengage to complete the clutch action of the clutch.

As shown in FIG. 1 , the flywheel 301 of the first clutch 35 is coaxially connected with the first planet carrier 33 , and the driven disc 302 of the first clutch 35 is coaxially connected with the first ring gear 34 . The first ring gear 34 and the first planet carrier 33 are connected by the first clutch 35. When the first clutch 35 is controlled to be combined, the first ring gear 34 and the first planet carrier 33 can be combined as a whole, so that the first gear The ring 34 and the first planet carrier 33 rotate together, and when the first clutch 35 is controlled to disengage, the first planet carrier 33 can rotate freely relative to the first ring gear 34 .

As shown in FIG. 1 , the flywheel 301 of the second clutch 36 is coaxially connected with the first ring gear 34 , and the driven disc 302 of the second clutch 36 is connected with the casing 100 . The first ring gear 34 and the housing 100 are connected by the second clutch 36. When the second clutch 36 is controlled to be combined, the first ring gear 34 can be fixed on the housing 100, thereby braking the first ring gear 34. When the second clutch 36 is controlled to be disengaged, the first ring gear 34 can freely rotate relative to the casing 100 .

When the first clutch 35 is disengaged and the second clutch 36 is engaged, the first ring gear 34 is fixed, and the power of the power source is transmitted to the first planet carrier 33 to drive the wheels 13 to rotate. In this mode, the rotational speed of the first planetary carrier 33 is lower than that of the first center wheel 31 , that is, the low-speed mode, which is suitable for working conditions such as automobile constant speed cruise, etc. that do not require high power requirements.

When the first clutch 35 is engaged and the second clutch 36 is disengaged, the first ring gear 34 and the first planetary carrier 33 are fixed together, and the power of the power source is transmitted to the first planetary carrier 33 to drive the wheels 13 to rotate. In this mode, the rotation speed of the first center wheel 31 is consistent with the rotation speed of the first planet carrier 33 , that is, the medium-high speed mode, which is suitable for high-speed driving and other working conditions corresponding to high power requirements.

In some other implementation manners, both the first clutch 35 and the second clutch 36 can be disengaged, so that the power of the first power source will not be transmitted to the first planet carrier 33 , that is, it is in neutral mode.

Optionally, as shown in FIG. 1 , the first speed change mechanism further includes a ring gear 37, which is coaxially connected with the first planet carrier 33, and the ring gear 37 and the first clutch 35 are respectively located at two ends of the first planetary gear 32. On the side, the gear ring 37 is connected with the wheel 13 in transmission.

Wherein, the gear ring 37 is an annular structure, and the outer wall of the gear ring 37 has gears. The ring gear 37 can be coaxially sleeved outside the first planet carrier 33 , or coaxially connected with the first planet carrier 33 through other connecting structures, so that the rotation of the first planet carrier 33 can drive the ring gear 37 to rotate together.

In this way, the ring gear 37 is set on the first planet carrier 33, and the wheel 13 is meshed with the first planet carrier 33 through the gear, so that the first planet carrier 33 can transmit the power in the first speed change mechanism to the wheel 13, and realize driving the wheel. 13 turns. Moreover, there is no main shaft arranged between the wheel 13 and the first transmission mechanism, which effectively reduces various transmission components in the gearbox and reduces the manufacturing cost of the gearbox.

As shown in Figure 1, the ring gear 37 and the first clutch 35 are respectively located on both sides of the first planetary gear 32, preventing the first clutch 35 and the ring gear 37 from being arranged on the same side, thereby affecting the transmission connection between the gear and the wheel 13 , so that the components are distributed reasonably and the reliability of the gearbox is improved.

Optionally, as shown in Figure 1, the input main shaft 20 includes a first section 21 and a second section 22, and the first section 21 and the second section 22 are coaxially spaced; the gearbox also includes a second speed change mechanism and a third clutch 51 , the second transmission mechanism and the third clutch 51 are located in the housing 100 .

Wherein, the second speed change mechanism has an input part and an output part, the input part is in transmission connection with the second section 22, the output part is used for transmission connection with the generator mechanism, the first center wheel 31 is coaxially connected with the first section 21, and the third clutch 51 is connected with the first segment 21 and the second segment 22 respectively.

In the above implementation manner, the input main shaft 20 and the power generation mechanism are connected by setting the second speed change mechanism, so as to satisfy the power generation function of the hybrid power system. Wherein, a third clutch 51 is arranged between the first center wheel 31 and the second center wheel, and the third clutch 51 is used to interrupt the power transmission between the first speed change mechanism and the second speed change mechanism, so that the When the hybrid power is in the power generation mode or the mode of driving, it can also prevent part of the power from being transmitted to the second transmission mechanism when driving the vehicle, so that the power of the power source is completely used to drive the vehicle.

In one implementation, as shown in FIG. 1 , the second transmission mechanism includes: a second sun gear 41, a second planet carrier 42, a plurality of second planetary gears 43, a second ring gear 44, a fourth clutch 45 and The fifth clutch 46, the second ring gear 44 is coaxially arranged with the second sun gear 41, and a plurality of second planetary gears 43 are located between the second sun gear 41 and the second ring gear 44, and are all connected to the second sun gear 41 It meshes with the second ring gear 44 , the second sun gear 41 is coaxially connected with the input main shaft 20 , and the second planet carrier 42 is used for transmission connection with the generator mechanism.

Wherein, the fourth clutch 45 is connected with the second ring gear 44 and the second planet carrier 42 respectively, and is used to control the connection or separation of the second ring gear 44 and the second planet carrier 42, and the fifth clutch 46 is connected with the second ring gear 44 respectively. It is connected with the housing 100 and is used for controlling the connection or separation of the second ring gear 44 with the housing 100 .

In the above implementation manner, the power of the power source can be transmitted to the second center wheel 41 of the second speed change mechanism through the input main shaft 20, wherein, the second speed change mechanism is provided with a fourth clutch 45 and a fifth clutch 46, and the fourth clutch 45 The second ring gear 44 can be connected or separated from the second planet carrier 42 , and the fifth clutch 46 can be connected or separated from the second ring gear 44 and the housing 100 . When the fourth clutch 45 connects the second ring gear 44 and the second planet carrier 42, the second ring gear 44 and the second planet carrier 42 are combined as a whole, and the second planet carrier 42 and the second sun gear 41 are in the first speed ratio Down rotation; when the fifth clutch 46 connects the second ring gear 44 and the housing 100, the second ring gear 44 is fixed, and the second planet carrier 42 and the second sun gear 41 rotate under the second speed ratio. In this way, by controlling the combination of the fourth clutch 45 or the fifth clutch 46, the power source can be controlled to rotate at different speeds at the same speed, so as to realize the purpose of generating electricity with different powers, fully exert the performance of the power generation mechanism, and improve the performance of the power generation mechanism. The power generation efficiency of the hybrid system.

In the embodiment of the present disclosure, the manner in which the fourth clutch 45 connects the planetary carrier and the ring gear, and the manner in which the fifth clutch 46 connects the ring gear and the housing 100 can be described above.

In another implementation manner, FIG. 2 is a schematic structural diagram of another gearbox provided by an embodiment of the present disclosure. As shown in FIG. 2 , the second transmission mechanism includes a gear train 70 , the input gear 71 of the gear train 70 is coaxially connected with the input main shaft 20 , and the output gear 72 of the gear train 70 is used for transmission connection with the generator mechanism.

By setting the gear train, the gear train is connected to the power generating mechanism and the input main shaft 20 respectively, so as to achieve the purpose of the power source driving the power generating mechanism to generate electricity. Since the structure of the gear train is simpler than that of the planetary gear train, it is convenient to process and manufacture, and can effectively reduce the cost of the gearbox.

Fig. 3 is a schematic structural diagram of a hybrid power system provided by an embodiment of the present disclosure. As shown in FIG. 3 , the hybrid power system includes a first power source, a second power source, a power generation mechanism and the aforementioned gearbox.

Wherein, the first power source is the engine 10 , the second power source is the first motor 11 , and the power generating mechanism is the second motor 12 .

As shown in Figure 3, the engine 10, the first motor 11 and the second motor 12 are located outside the casing 100, the output shaft of the engine 10 and the output shaft of the first motor 11 are all connected to the input main shaft 20, and the engine 10 and The first motor 11 is located on both sides of the third clutch 51 , and the output shaft of the second motor 12 is coaxially connected with the first planet carrier 33 .

In the embodiment of the present disclosure, the engine 10 and the first motor 11 are set as the power source, and the second motor 12 is configured as the power generation mechanism to form a hybrid power system. This kind of hybrid power system can combine the two power sources through the gearbox. The power is transmitted to the first transmission mechanism to drive the wheels 13, and the power generation mechanism can also be controlled to generate electricity when the first power source is working, so that the first power source can work efficiently and improve the power performance and endurance of the hybrid system.

As shown in Figure 3, the engine 10 and the first motor 11 are located on both sides of the third clutch 51, so controlling the third clutch 51 can cut off the power transmission between the engine 10 and the first motor 11, and the engine 10 alone drives the second When the electric motor 12 generates electricity, it can prevent the engine 10 from dragging the first electric motor 11 to rotate, thus causing loss of power.

Optionally, as shown in FIG. 3 , the hybrid power system further includes a power supply assembly 60, which is located outside the housing 100. The power supply assembly 60 includes: a battery 61 and two inverters 62, and the two inverters 62 One of the two inverters 62 is connected between the battery 61 and the first motor 11 , and the other of the two inverters 62 is connected between the battery 61 and the second motor 12 .

By setting two inverters 62 , one is used for connecting the battery 61 and the first motor 11 , and the other is used for connecting the battery 61 and the second motor 12 . Wherein, the battery 61 is a rechargeable battery 61, and the inverter 62 is arranged on the output circuit of the battery 61, and is used for converting the direct current output by the battery 61 into three-phase alternating current to drive the first motor 11 or the second motor 12. In addition, in the embodiment of the present disclosure, the inverter 62 and the transformer are integrated together, which is convenient for installation and saves installation space.

Optionally, as shown in FIG. 3 , the hybrid power system further includes a differential 14 that is in transmission connection with the first planetary carrier 33 , and that the differential 14 is in transmission connection with the wheels 13 .

In the disclosed embodiment, the input gear of the differential gear 14 meshes with the gear ring 37 on the first planetary carrier 33 , so as to receive the power transmitted from the power source to achieve the purpose of driving the wheels 13 to rotate.

Wherein, the differential gear 14 can make the wheels 13 connected with the output shaft of the differential gear 14 rotate at different rotational speeds. When the car is turning, the turning radius of the inner wheel 13 of the car is different from that of the outer wheel 13 of the car. The turning radius of the outer wheel 13 will be greater than the turning radius of the inner wheel 13. Depending on the rotational speed of the inner wheel 13 , the differential 14 can be used to make the two wheels 13 roll at different rotational speeds, thereby realizing the difference in the rotational speeds of the two wheels 13 .

An embodiment of the present disclosure provides an automobile, which includes the above-mentioned hybrid power system and a car body, where the hybrid power system is located in the car body.

The hybrid power system provided by the embodiments of the present disclosure can operate in any power mode, and the power mode includes a pure electric mode, a hybrid drive mode, a direct drive mode of the engine 10 and an energy recovery mode.

The power modes of the hybrid power system are described below by taking the hybrid power system shown in Figure 3 as an example:

In the embodiment of the present disclosure, the pure electric mode includes two modes.

In the first mode, FIG. 4 is a schematic diagram of energy transfer of a hybrid power system provided in an embodiment of the present disclosure in pure electric mode. As shown in FIG. 4 , when the hybrid system is switched to pure electric mode, the engine 10 and the second motor 12 are not working, the third clutch 51 is disengaged, the first clutch 35 is disengaged, the second clutch 36 is engaged, and the first motor 11 is working.

In the second mode, FIG. 5 is a schematic diagram of energy transfer of a hybrid power system provided in an embodiment of the present disclosure in pure electric mode. As shown in FIG. 5 , when the hybrid system is switched to pure electric mode, the engine 10 and the second motor 12 are not working, the third clutch 51 is disengaged, the first clutch 35 is engaged, the second clutch 36 is disengaged, and the first motor 11 is working.

In the above two implementations, the battery 61 of the power supply assembly 60 is discharged, the DC power is converted into a three-phase AC power by the inverter 62, and then the output shaft of the first motor 11 is driven to rotate, and the power of the first motor 11 passes through the first speed change mechanism It is transmitted to the first planet carrier 33 to drive the wheels 13 to realize the pure electric mode.

Optionally, in the pure electric mode, the vehicle may also be driven by the first electric motor 11 to run in reverse gear. When reversing, the engine 10 and the second motor 12 do not work, the third clutch 51 is disengaged, one of the first clutch 35 and the second clutch 36 is combined and the other is disengaged, and the first motor 11 reverses to realize reversing.

In the embodiment of the present disclosure, the hybrid power mode includes four modes.

Fig. 6 is a schematic diagram of energy transmission of a hybrid power system in a hybrid power mode provided by an embodiment of the present disclosure. As shown in FIG. 6 , in the first mode, the engine 10 works and drives the second motor 12 to generate electricity, the first motor 11 works, and the car is driven solely by the first motor 11 . At this time, the first clutch 35 is disengaged, the second clutch 36 is engaged, the third clutch 51 is disengaged, the fourth clutch 45 is disengaged, and the fifth clutch 46 is engaged.

Fig. 7 is a schematic diagram of energy transmission of a hybrid power system in a hybrid power mode provided by an embodiment of the present disclosure. As shown in FIG. 7 , in the second mode, the engine 10 works and drives the second motor 12 to generate electricity, the first motor 11 works, and the car is driven solely by the first motor 11 . At this time, the first clutch 35 is disengaged, the second clutch 36 is engaged, the third clutch 51 is disengaged, the fourth clutch 45 is engaged, and the fifth clutch 46 is disengaged.

Under the above two modes, the power of the engine 10 is sequentially transmitted to the second motor 12 through the input main shaft 20 and the first speed change mechanism to drive the second motor 12 to generate electricity; the power of the first motor 11 is sequentially passed through the input main shaft 20 and the first speed change mechanism. mechanism to drive the wheel 13 to rotate.

Fig. 8 is a schematic diagram of energy transfer of a hybrid power system in a hybrid power mode provided by an embodiment of the present disclosure. As shown in FIG. 8 , in the third mode, the engine 10 works and drives the second motor 12 to generate electricity and drive the vehicle, the first motor 11 works, and the car is driven by the engine 10 and the first motor 11 together. At this time, the first clutch 35 is disengaged, the second clutch 36 is engaged, the third clutch 51 is engaged, the fourth clutch 45 is engaged, and the fifth clutch 46 is disengaged.

Fig. 9 is a schematic diagram of energy transmission of a hybrid power system in a hybrid power mode provided by an embodiment of the present disclosure. As shown in FIG. 9 , in the fourth mode, the engine 10 works and drives the second motor 12 to generate electricity and drive the vehicle, the first motor 11 works, and the car is driven by the engine 10 and the first motor 11 together. At this time, the first clutch 35 is engaged, the second clutch 36 is disengaged, the third clutch 51 is engaged, the fourth clutch 45 is engaged, and the fifth clutch 46 is disengaged.

Under the above two modes, a part of the power of the engine 10 is transmitted to the second motor 12 through the input main shaft 20 and the second transmission mechanism in order to drive the second motor 12 to generate electricity; another part of the power of the engine 10 is passed through the input main shaft 20, the The three clutches 51 and the first speed change mechanism are transmitted to the wheels 13 to drive the wheels 13 to rotate. The power of the first electric motor 11 passes through the input spindle 20 and the first transmission mechanism sequentially to drive the wheels 13 to rotate.

In the embodiment of the present disclosure, the direct drive mode of the engine 10 includes two modes.

FIG. 10 is a schematic diagram of energy transfer of a hybrid power system provided by an embodiment of the present disclosure under the direct drive mode of the engine 10 . As shown in FIG. 10 , in the first mode, the engine 10 works and drives the second motor 12 to generate electricity and drive the vehicle to run, the first motor 11 does not work, and the vehicle is driven by the engine 10 alone. At this time, the first clutch 35 is disengaged, the second clutch 36 is engaged, the third clutch 51 is engaged, the fourth clutch 45 is engaged, and the fifth clutch 46 is disengaged.

FIG. 11 is a schematic diagram of energy transfer of a hybrid power system provided by an embodiment of the present disclosure under the direct drive mode of the engine 10 . As shown in FIG. 11 , in the second mode, the engine 10 works and drives the second motor 12 to generate electricity and drive the vehicle. The first motor 11 does not work, and the vehicle is driven by the engine 10 alone. At this time, the first clutch 35 is engaged, the second clutch 36 is disengaged, the third clutch 51 is engaged, the fourth clutch 45 is engaged, and the fifth clutch 46 is disengaged.

Under the above two modes, a part of the power of the engine 10 is transmitted to the second motor 12 through the input main shaft 20 and the second transmission mechanism in order to drive the second motor 12 to generate electricity; another part of the power of the engine 10 is passed through the input main shaft 20, the The three clutches 51 and the first transmission mechanism are transmitted to the wheels 13 to drive the wheels 13 to rotate.

In the embodiment of the present disclosure, the direct drive mode of the engine 10 includes two modes. When the hybrid power system is switched to the energy recovery mode, the engine 10 and the second motor 12 are not working, the third clutch 51 is disengaged, one of the first clutch 35 and the second clutch 36 is combined and the other is disengaged, and the first motor 11 is in power generation mode.

Exemplarily, FIG. 12 is a schematic diagram of energy transfer of a hybrid power system in an energy recovery mode provided by an embodiment of the present disclosure. As shown in FIG. 12 , when the hybrid power system is switched to the energy recovery mode, the engine 10 and the second motor 12 are not working, the third clutch 51 is disengaged, the fourth clutch 45 is engaged, and the first motor 11 is in the power generation mode.

In the above implementation mode, when the vehicle is in the coasting or braking condition, the wheels 13 provide the reverse torque to transfer part of the kinetic energy of the vehicle to the first motor 11 via the second main shaft and the third speed change mechanism, so as to convert it into electric energy and store it in the power supply The component 60 is reserved in the component 60 to realize the energy recovery function of the first motor 11 .

The above are only optional embodiments of the present disclosure, and are not intended to limit the present disclosure. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present disclosure shall be included in the protection scope of the present disclosure Inside.

Claims (10)

1. A transmission, characterized in that it comprises: a housing (100), a first transmission mechanism and an input main shaft (20);

the first speed change mechanism is positioned in the shell (100), the input main shaft (20) is movably inserted in the shell (100), and the input main shaft (20) is used for being in transmission connection with at least one power source;

the first speed change mechanism includes: the planetary gear set comprises a first central wheel (31), a plurality of first planetary wheels (32), a first planet carrier (33), a first gear ring (34), a first clutch (35) and a second clutch (36), wherein the first gear ring (34) is coaxially arranged with the first central wheel (31), the plurality of first planetary wheels (32) are positioned between the first central wheel (31) and the first gear ring (34) and are respectively meshed with the first central wheel (31) and the first gear ring (34), the first central wheel (31) is coaxially connected with an input spindle (20), and the first planet carrier (33) is in transmission connection with wheels (13);

the first clutch (35) is connected with the first gear ring (34) and the first planet carrier (33) respectively and used for controlling the connection or the disconnection of the first gear ring (34) and the first planet carrier (33), and the second clutch (36) is connected with the first gear ring (34) and the shell (100) respectively and used for controlling the connection or the disconnection of the first gear ring (34) and the shell (100).

2. Gearbox according to claim 1, characterised in that the flywheel (301) of the first clutch (35) is coaxially connected to the first carrier (33) and the driven disc (302) of the first clutch (35) is coaxially connected to the first ring gear (34);

the flywheel (301) of the second clutch (36) is coaxially connected with the first gear ring (34), and the driven disc (302) of the second clutch (36) is connected with the shell (100).

3. The gearbox according to claim 1, characterised in that the first gear shifting mechanism further comprises a toothed ring (37), the toothed ring (37) is coaxially connected with the first planet carrier (33), the toothed ring (37) and the first clutch (35) are respectively located on both sides of the first planet gear (32), and the toothed ring (37) is in driving connection with the wheel (13).

4. A gearbox according to any one of claims 1 to 3, characterised in that the input spindle (20) comprises a first section (21) and a second section (22), the first section (21) and the second section (22) being coaxially spaced apart;

the gearbox further comprises a second speed change mechanism and a third clutch (51), both the second speed change mechanism and the third clutch (51) being located within the housing (100);

the second speed change mechanism is provided with an input part and an output part, the input part is in transmission connection with the second section (22), the output part is used for being in transmission connection with the power generation mechanism, the first center wheel (31) is coaxially connected with the first section (21), and the third clutch (51) is respectively connected with the first section (21) and the second section (22).

5. A gearbox according to claim 4, in which the second variator comprises: a second central wheel (41), a second planet carrier (42), a plurality of second planet wheels (43), a second gear ring (44), a fourth clutch (45) and a fifth clutch (46), wherein the second gear ring (44) is coaxially arranged with the second central wheel (41), the plurality of second planet wheels (43) are positioned between the second central wheel (41) and the second gear ring (44) and are respectively meshed with the second central wheel (41) and the second gear ring (44), the second central wheel (41) is coaxially connected with the input main shaft (20), and the second planet carrier (42) is used for being in transmission connection with a power generation mechanism;

the fourth clutch (45) is respectively connected with the second gear ring (44) and the second planet carrier (42) and used for controlling the connection or the separation of the second gear ring (44) and the second planet carrier (42), and the fifth clutch (46) is respectively connected with the second gear ring (44) and the shell (100) and used for controlling the connection or the separation of the second gear ring (44) and the shell (100).

6. The gearbox according to claim 4, characterised in that the second gear shift mechanism comprises a gear train (70), an input gear of the gear train (70) being coaxially connected with the input spindle (20), an output gear of the gear train (70) being for driving connection with a power generating mechanism.

7. A hybrid system, characterized in that the hybrid system comprises a first power source, a second power source, a power generation mechanism and a gearbox according to claim 4, the first power source being an engine (10), the second power source being a first electric machine (11), the power generation mechanism being a second electric machine (12);

the engine (10), the first motor (11) and the second motor (12) are located outside the shell (100), an output shaft of the engine (10) and an output shaft of the first motor (11) are in transmission connection with the input spindle (20), the engine (10) and the first motor (11) are located on two sides of the third clutch (51), and an output shaft of the second motor (12) is coaxially connected with the first planet carrier (33).

8. The hybrid system according to claim 7, further comprising a power supply assembly (60), the power supply assembly (60) being located outside the housing (100), the power supply assembly (60) comprising: a battery (61) and two inverters (62), one of the two inverters (62) being connected between the battery (61) and the first motor (11), the other of the two inverters (62) being connected between the battery (61) and the second motor (12).

9. Hybrid system according to claim 7, characterized in that it further comprises a differential (14), said differential (14) being in driving connection with said first carrier (33), said differential (14) being intended to be in driving connection with a wheel (13).

10. A vehicle comprising a hybrid powertrain according to any one of claims 7 to 9 and a vehicle body, the hybrid powertrain being located within the vehicle body.

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