阅读说明：本技术 混合动力机电耦合系统和车辆 (Hybrid electromechanical coupling system and vehicle ) 是由 黄楚然 朱洪兴 于 2020-08-13 设计创作，主要内容包括：本公开提供一种混合动力机电耦合系统及车辆。混合动力机电耦合系统包括发动机、驱动电机、发电机、第一行星齿轮机构、离合器以及轮系组；发动机的输出轴与离合器的输入轴相连,离合器的输出轴与轮系组耦合,轮系组用于与驱动轮耦合；发电机的输出轴与第一行星齿轮机构相连,第一行星齿轮机构还分别与发动机的输出轴以及离合器的输入轴相连；驱动电机的输出轴与轮系组耦合；其中,通过改变离合器的结合状态,以使得系统实现多模式切换。可以通过改变离合器的结合状态,使得系统实现多模式切换,满足不同城市工况以及不同车型的要求,可以覆盖HEV车型和PHEV车型,平台化好。发电机通过第一行星齿轮传动机构实行升速降扭,可有效减小发电机体积。(The present disclosure provides a hybrid electromechanical coupling system and a vehicle. The hybrid power electromechanical coupling system comprises an engine, a driving motor, a generator, a first planetary gear mechanism, a clutch and a gear train set; an output shaft of the engine is connected with an input shaft of the clutch, the output shaft of the clutch is coupled with a gear train group, and the gear train group is used for being coupled with a driving wheel; the output shaft of the generator is connected with a first planetary gear mechanism, and the first planetary gear mechanism is also connected with the output shaft of the engine and the input shaft of the clutch respectively; an output shaft of the driving motor is coupled with the gear train group; wherein, by changing the combination state of the clutch, the system realizes multi-mode switching. The system can realize multi-mode switching by changing the combination state of the clutch, meets the requirements of different city working conditions and different vehicle types, can cover HEV vehicle types and PHEV vehicle types, and has good platformization. The generator carries out speed-up torque-down through the first planetary gear transmission mechanism, and the size of the generator can be effectively reduced.)

1. A hybrid electromechanical coupling system is characterized by comprising an engine, a driving motor, a generator, a first planetary gear mechanism, a clutch and a gear train set, wherein the engine is connected with the driving motor;

an output shaft of the engine is connected with an input shaft of the clutch, an output shaft of the clutch is coupled with the gear train set, and the gear train set is used for being coupled with a driving wheel;

the output shaft of the generator is connected with the first planetary gear mechanism, and the first planetary gear mechanism is also respectively connected with the output shaft of the engine and the input shaft of the clutch;

an output shaft of the driving motor is coupled with the gear train set; wherein the content of the first and second substances,

the system realizes multi-mode switching by changing the combination state of the clutch.

2. The hybrid electromechanical coupling system according to claim 1, wherein the drive motor is capable of always powering the drive wheel during a multi-mode switching; and/or the presence of a gas in the gas,

in the braking mode, the drive motor generates a drive torque and induces an electrical current in the windings to charge the power battery.

3. The hybrid electromechanical coupling system according to claim 1, wherein the first planetary gear mechanism includes a first sun gear, a first carrier, and a first ring gear; wherein the content of the first and second substances,

the first sun gear is connected with an output shaft of the generator, the first planet carrier is coupled with the first sun gear and the first gear ring respectively, the first gear ring is connected with an output shaft of the engine, and the first planet carrier is fixed.

4. The hybrid electromechanical coupling system according to claim 1, wherein the first planetary gear mechanism includes a first sun gear, a first carrier, and a first ring gear; wherein the content of the first and second substances,

the first sun gear is connected with an output shaft of the generator, the first planet carrier is coupled with the first sun gear and the first gear ring respectively, the first planet carrier is connected with the output shaft of the engine, and the first gear ring is fixed.

5. The hybrid electro-mechanical coupling system of claim 1, further comprising a second planetary gear mechanism; wherein the content of the first and second substances,

the driving motor is coupled with the gear train set through the second planetary gear mechanism, and the second planetary gear mechanism is also selectively coupled with the first planetary gear mechanism, so that the system realizes multi-mode switching.

6. The hybrid electromechanical coupling system according to claim 5, wherein the second planetary gear mechanism includes a second sun gear, a second planet carrier, and a second ring gear; wherein the content of the first and second substances,

the second sun gear is connected with an output shaft of the driving motor, the second planet carrier is respectively coupled with the second sun gear and the second gear ring, the second planet carrier is connected with the gear train set, and the second gear ring is selectively coupled with the first planet carrier of the first planetary gear mechanism.

7. The hybrid electro-mechanical coupling system of claim 6, further comprising a first brake and a second brake; wherein the content of the first and second substances,

a first end of the first brake is connected with the first planet carrier of the first planetary gear mechanism, and a second end of the first brake is fixed;

and a first end of the second brake is connected with a second ring gear of the second planetary gear mechanism, and a second end of the second brake is fixed.

8. A hybrid electromechanical coupling system according to any one of claims 1 to 7, wherein the train set includes a transmission output shaft, a first transmission wheel and a second transmission wheel; wherein the content of the first and second substances,

the transmission output shaft is connected with the output shaft of the clutch;

the first driving wheel is arranged on the driving output shaft and is used for being coupled with the driving wheel;

the second transmission wheel is coupled with the first transmission wheel and connected with an output shaft of the driving motor.

9. The hybrid electromechanical coupling system according to any one of claims 1 to 7, wherein the engagement state of the clutch is changed according to the magnitude relation between the power battery SOC value and a preset first threshold value, so that the system realizes multi-mode switching; and/or the presence of a gas in the gas,

and changing the combination state of the clutch according to the magnitude relation between the vehicle speed value driven by the driving wheel and a preset second threshold value, so that the system realizes multi-mode switching.

10. A vehicle, characterized in that it comprises a hybrid electromechanical coupling system according to any one of claims 1 to 9.

Technical Field

The disclosure belongs to the technical field of vehicle power systems, and particularly relates to a hybrid electromechanical coupling system and a vehicle.

Background

Conventionally, a power system includes an engine (internal combustion engine) and a drive system composed of a transmission, a differential, and a propeller shaft. Its function is to provide the vehicle with the driving power required for the driving wheels.

However, the power system has a single driving mode, and cannot meet the requirements of different working conditions and different vehicle types.

Disclosure of Invention

The present disclosure is directed to solving at least one of the problems of the prior art, and provides a hybrid electromechanical coupling system and a vehicle.

In one aspect of the present disclosure, a hybrid electromechanical coupling system is provided, which includes an engine, a driving motor, a generator, a first planetary gear mechanism, a clutch, and a gear train set;

an output shaft of the engine is connected with an input shaft of the clutch, an output shaft of the clutch is coupled with the gear train set, and the gear train set is used for being coupled with a driving wheel;

the output shaft of the generator is connected with the first planetary gear mechanism, and the first planetary gear mechanism is also respectively connected with the output shaft of the engine and the input shaft of the clutch;

an output shaft of the driving motor is coupled with the gear train set; wherein the content of the first and second substances,

the system realizes multi-mode switching by changing the combination state of the clutch.

In some alternative embodiments, the drive motor may be capable of providing power to the drive wheel at all times during the multi-mode switch; and/or the presence of a gas in the gas,

in the braking mode, the drive motor generates a drive torque and induces an electrical current in the windings to charge the power battery.

In some alternative embodiments, the first planetary gear mechanism includes a first sun gear, a first planet carrier, and a first ring gear; wherein the content of the first and second substances,

the first sun gear is connected with an output shaft of the generator, the first planet carrier is coupled with the first sun gear and the first gear ring respectively, the first gear ring is connected with an output shaft of the engine, and the first planet carrier is fixed.

In some alternative embodiments, the first planetary gear mechanism includes a first sun gear, a first planet carrier, and a first ring gear; wherein the content of the first and second substances,

the first sun gear is connected with an output shaft of the generator, the first planet carrier is coupled with the first sun gear and the first gear ring respectively, the first planet carrier is connected with the output shaft of the engine, and the first gear ring is fixed.

In some optional embodiments, the hybrid electromechanical coupling system further comprises a second planetary gear mechanism; wherein the content of the first and second substances,

the driving motor is coupled with the gear train set through the second planetary gear mechanism, and the second planetary gear mechanism is also selectively coupled with the first planetary gear mechanism, so that the system realizes multi-mode switching.

In some alternative embodiments, the second planetary gear mechanism includes a second sun gear, a second planet carrier, and a second ring gear; wherein the content of the first and second substances,

the second sun gear is connected with an output shaft of the driving motor, the second planet carrier is respectively coupled with the second sun gear and the second gear ring, the second planet carrier is connected with the gear train set, and the second gear ring is selectively coupled with the first planet carrier of the first planetary gear mechanism.

In some optional embodiments, the hybrid electro-mechanical coupling system further comprises a first brake and a second brake; wherein the content of the first and second substances,

a first end of the first brake is connected with the first planet carrier of the first planetary gear mechanism, and a second end of the first brake is fixed;

and a first end of the second brake is connected with a second ring gear of the second planetary gear mechanism, and a second end of the second brake is fixed.

In some optional embodiments, the train set comprises a transmission output shaft, a first transmission wheel and a second transmission wheel; wherein the content of the first and second substances,

the transmission output shaft is connected with the output shaft of the clutch;

the first driving wheel is arranged on the driving output shaft and is used for being coupled with the driving wheel;

the second transmission wheel is coupled with the first transmission wheel and connected with an output shaft of the driving motor.

In some optional embodiments, the combination state of the clutch is changed according to the magnitude relation between the SOC value of the power battery and a preset first threshold value, so that the system realizes multi-mode switching; and/or the presence of a gas in the gas,

and changing the combination state of the clutch according to the magnitude relation between the vehicle speed value driven by the driving wheel and a preset second threshold value, so that the system realizes multi-mode switching.

In another aspect of the present disclosure, a vehicle is provided, which includes the hybrid electromechanical coupling system described above.

The utility model discloses a hybrid electromechanical coupling system and vehicle, including engine, driving motor, generator, first planetary gear mechanism, clutch and train set, the output shaft of engine with the input shaft of clutch links to each other, the output shaft of clutch with train set coupling, train set is used for with the drive wheel coupling, the output shaft of generator with first planetary gear mechanism links to each other, first planetary gear mechanism still respectively with the output shaft of engine and the input shaft of clutch links to each other, driving motor's output shaft with train set coupling. Therefore, the system can realize multi-mode switching by changing the combination state of the clutch, thereby meeting the requirements of different city working conditions and different vehicle types, covering HEV vehicle types and PHEV vehicle types and having good platformization. In addition, the generator carries out speed-up and torque-down through the first planetary gear transmission mechanism, so that the size of the generator can be effectively reduced.

Drawings

FIG. 1 is a schematic structural diagram of a hybrid electromechanical coupling system according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of a hybrid electromechanical coupling system according to another embodiment of the present disclosure;

3-6 are schematic diagrams of a hybrid electromechanical coupling system according to another embodiment of the present disclosure operating in different modes;

FIG. 7 is a schematic structural diagram of a hybrid electromechanical coupling system according to another embodiment of the present disclosure;

fig. 8 to 12 are schematic diagrams illustrating the hybrid electromechanical coupling system according to another embodiment of the disclosure operating in different modes.

Detailed Description

For a better understanding of the technical aspects of the present disclosure, reference is made to the following detailed description taken in conjunction with the accompanying drawings.

As shown in fig. 1, a hybrid electromechanical coupling system 100, the hybrid electromechanical coupling system 100 includes an engine 110, a driving motor 120, a generator 130, a first planetary gear mechanism 140, a clutch 150, and a train set 160.

For example, as shown in fig. 1, the output shaft 111 of the engine 110 is connected to the input shaft of the clutch 150, the output shaft of the clutch 150 is coupled to the train set 160, and the train set 160 is used for coupling with the driving wheel 200. An output shaft of the generator 130 is connected to the first planetary gear mechanism 140, and the first planetary gear mechanism 140 is further connected to the output shaft 111 of the engine 110 and an input shaft of the clutch 150, respectively. The output shaft of the drive motor 120 is coupled to the train set 160. So configured, the hybrid electromechanical coupling system 100 can realize multi-mode switching by changing the engagement state of the clutch 150.

Illustratively, the above-mentioned multiple modes refer to: the hybrid electromechanical coupling system can operate in an engine direct drive mode, a parallel hybrid mode, a series hybrid mode, a pure electric mode, etc., according to the coupling state of the clutch 150.

Illustratively, in conjunction with fig. 3, the hybrid electromechanical coupling system 100 is operated in an engine direct drive mode, wherein the clutch 150 is engaged and power is ultimately transmitted from the engine 110, the engine output shaft 111, the clutch 150, and the gear train set 160 to the drive wheels 200. For yet another example, as shown in FIG. 4, the hybrid electromechanical coupling system 100 operates in a parallel hybrid mode with the clutch 150 engaged, which has a total of three power transmission paths. Route 1: the power of the engine 110 is finally transmitted to the drive wheels 200 by the output shaft 111 of the engine, the clutch 150, and the train set 160. Route 2: the power of the generator 130 is finally transmitted to the drive wheels 200 through the first planetary gear mechanism 140 and the train wheel set 160. Route 3: the power of the drive motor 120 is transmitted to the drive wheels 200 via the train wheel set 160. Of course, the hybrid electromechanical coupling system 100 may have other operation modes besides the above, and reference may be made to the following detailed description.

The hybrid electromechanical coupling system of this embodiment, it includes engine, driving motor, generator, first planetary gear mechanism, clutch and train set, the output shaft of engine with the input shaft of clutch links to each other, the output shaft of clutch with train set coupling, train set is used for with the drive wheel coupling, the output shaft of generator with first planetary gear mechanism links to each other, first planetary gear mechanism still respectively with the output shaft of engine and the input shaft of clutch links to each other, driving motor's output shaft with train set coupling. Therefore, the system can realize multi-mode switching by changing the combination state of the clutch, thereby meeting the requirements of different city working conditions and different vehicle types, covering HEV vehicle types and PHEV vehicle types and having good platformization. In addition, the generator carries out speed-up and torque-down through the first planetary gear transmission mechanism, so that the size of the generator can be effectively reduced.

For example, the driving motor 120 can always provide power to the driving wheel 200 during the multi-mode switching. For example, as shown in fig. 3 and 4, when the system is switched from the engine direct drive mode to the parallel hybrid mode, the driving motor 120 may always work to output power, so that it may be ensured that the driving wheel 200 does not have power interruption during the mode switching process, it may be ensured that the driving wheel 200 may smoothly switch different working modes, and user experience may be improved.

Illustratively, as shown in fig. 1, the first planetary gear mechanism 140 includes a first sun gear 141, a first carrier 142, and a first ring gear 143. The first sun gear 141 is coupled to an output shaft of the generator 130, the first carrier 142 is coupled to the first sun gear 141 and the first ring gear 143, respectively, the first ring gear 143 is coupled to the output shaft 111 of the engine 110, and the first carrier 142 is fixed.

Further, instead of the first planetary gear mechanism 140 in which the original member to be braked is fixed by the first carrier 142 as shown in fig. 1, the first ring gear 143 may be braked, as shown in fig. 2, and unlike fig. 1, the first carrier 142 is connected to the output shaft 111 of the engine 110 and the first ring gear 143 is fixed.

Illustratively, as shown in fig. 1 and 2, the train set 160 includes a transmission output shaft 161, a first transmission wheel 162 and a second transmission wheel 163. The first driving wheel 162 and the second driving wheel 163 may have a gear structure. Of course, other transmission structures may also be adopted, and the embodiment is not limited to this. The transmission output shaft 161 is connected to the output shaft of the clutch 150, the first transmission wheel 162 is disposed on the transmission output shaft 161, the first transmission wheel 162 is used for coupling with the driving wheel 200, and the second transmission wheel 163 is coupled with the first transmission wheel 162 and connected to the output shaft of the driving motor 120.

The power transmission process of the hybrid electromechanical coupling system 100 in different modes will be described in detail below with reference to fig. 3 to 6.

As shown in fig. 3 to 6, the multi-mode switching is realized by controlling whether the power of the engine 110 is output or not through the clutch 150, when the clutch 150 is disconnected, the system can realize a pure electric mode and a braking energy recovery mode, and when the clutch 150 is combined, the system can realize a hybrid driving mode and an engine single driving mode, as shown in table 1 below:

TABLE 1

Illustratively, as shown in fig. 3, the system operates in an engine-only driving mode, in which the clutch 150 is engaged and power is finally transmitted to the driving wheels 200 from the engine 110, the engine output shaft 111, the clutch 150, the transmission output shaft 161, the second transmission wheel 163 and the differential 165.

Illustratively, as shown in FIG. 4, the system operates in a parallel hybrid mode with the clutch 150 engaged, which has a total of three power transmission paths. Route 1: the engine 110, the engine output shaft 111, the clutch 150, the transmission output shaft 161, the second transmission wheel 163, and the differential 165 are finally transmitted to the drive wheels 200. Route 2: the power of the generator 130 is finally transmitted to the driving wheels 200 through the first sun gear 141, the first carrier 142, the first ring gear 143, the transmission output shaft 161, the second transmission wheel 163, and the differential 165. Route 3: the power of the driving motor 120 is finally transmitted to the driving wheels 200 through the third driving wheel 164, the first driving wheel 162, the driving output shaft 161, the second driving wheel 163, and the differential 165.

Illustratively, as shown in FIG. 5, the system operates in a series hybrid mode with the clutch 150 disengaged, which has a total of two power transmission paths. Route 1: the power of the engine 110 is transmitted to the generator 130 via the engine output shaft 111, the first ring gear 143, the first carrier 142, the sun gear 141 to generate electric power, and the electric power is stored in a power battery (not shown). Route 2: the power of the driving motor 120 is finally transmitted to the driving wheels 200 through the third driving wheel 164, the first driving wheel 162, the driving output shaft 161, the second driving wheel 163, and the differential 165.

For example, as shown in FIG. 6, the system operates in an electric-only mode, wherein clutch 150 is disengaged. The power of the driving motor 120 is finally transmitted to the driving wheels 200 through the third driving wheel 164, the first driving wheel 162, the driving output shaft 161, the second driving wheel 163, and the differential 165.

To further enable the system to switch between more modes, for example, as shown in fig. 7, the hybrid electromechanical coupling system 100 further includes a second planetary gear mechanism 170. The driving motor 120 is coupled to the gear train set 160 through the second planetary gear mechanism 170, and the second planetary gear mechanism 170 is also selectively coupled to the first planetary gear mechanism 140, so that the system can realize switching of more modes.

For example, as shown in fig. 7, the second planetary gear mechanism 170 includes a second sun gear 171, a second carrier 172, and a second ring gear 173. The second sun gear 171 is connected to an output shaft of the driving motor 120, the second carrier 172 is coupled to the second sun gear 171 and the second ring gear 173, respectively, the second carrier 172 is connected to the gear train set 160, and the second ring gear 173 is selectively coupled to the first carrier 142 of the first planetary gear mechanism 140.

Illustratively, as shown in FIG. 7, the hybrid electromechanical coupling system 100 further includes a first brake B1 and a second brake B2. A first end of the first brake B1 is connected to the first carrier 142 of the first planetary gear mechanism 140, and a second end of the first brake B1 is fixed. A first end of the second brake B2 is connected to the second ring gear 173 of the second planetary gear mechanism 170, and a second end of the second brake B2 is fixed.

As shown in fig. 7, the train wheel set 160 also includes the above-mentioned configurations of the transmission output shaft 161, the first transmission wheel 162, the second transmission wheel 163, the third transmission wheel 164, the differential 165, and the like. In contrast to the above, the third transmission wheel is connected to the output shaft of the driving motor 120 through the second planet carrier 172.

The power transmission process of the hybrid electromechanical coupling system 100 in different modes will be described in detail below with reference to fig. 8 to 12.

As shown in fig. 8 to 12, the multi-mode switching is achieved by controlling whether the power of the engine 110 is output through the clutch 150, the system can achieve a pure electric mode and a braking energy recovery mode when the clutch 150 is disengaged, the system can achieve a hybrid driving mode and an engine-only driving mode when the clutch 150 is engaged, and further, the system can achieve the pure electric mode when the first brake B1 brakes. When the first brake B1 and the second brake B2 are simultaneously braked, the system can realize a range extending mode, as shown in the following table 2:

TABLE 2

Illustratively, as shown in fig. 8, the system operates in an engine-only driving mode, in which the clutch 150 is engaged and power is finally transmitted to the driving wheels 200 from the engine 110, the engine output shaft 111, the clutch 150, the transmission output shaft 161, the second transmission wheel 163 and the differential 165.

Illustratively, as shown in FIG. 9, the system operates in a parallel hybrid mode with both brakes engaged and clutch 150 engaged. This mode has a total of three power transmission paths. Route 1: the engine 110, the engine output shaft 111, the clutch 150, the transmission output shaft 161, the second transmission wheel 163, and the differential 165 are finally transmitted to the drive wheels 200. Route 2: the power of the generator 130 is finally transmitted to the driving wheels 200 through the first sun gear 141, the first carrier 142, the first ring gear 143, the transmission output shaft 161, the second transmission wheel 163, and the differential 165. Route 3: the power of the driving motor 120 is finally transmitted to the driving wheel 200 through the second wheel 171, the second planet carrier 172, the third transmission wheel 164, the first transmission wheel 162, the transmission output shaft 161, the second transmission wheel 163, and the differential 165.

Illustratively, as shown in FIG. 10, the system operates in a power-split mode, where both brakes are off and clutch 150 is disengaged. This mode has a total of three power transmission paths. Route 1: the engine 110, the engine output shaft 111, the clutch 150, the transmission output shaft 161, the second transmission wheel 163, and the differential 165 are finally transmitted to the drive wheels 200. Route 2: the power of the generator 130 is finally transmitted to the driving wheels 200 through the first sun gear 141, the first carrier 142, the first ring gear 143, the transmission output shaft 161, the second transmission wheel 163, and the differential 165. Route 3: the power of the driving motor 120 is finally transmitted to the driving wheel 200 through the second wheel 171, the second planet carrier 172, the third transmission wheel 164, the first transmission wheel 162, the transmission output shaft 161, the second transmission wheel 163, and the differential 165.

Illustratively, as shown in FIG. 11, the system operates in a series hybrid mode with the clutch 150 disengaged, which has a total of two power transmission paths. Route 1: the engine 110, the engine output shaft 111, the first ring gear 143, the first carrier 142, and the first sun gear 141 are transmitted to the generator 130 to generate electric power, and the electric power is stored in the power battery. The clutch 150, the transmission output shaft 161, the second transmission wheel 163 and the differential 165 are finally transmitted to the driving wheels 200. Route 2: the power of the driving motor 120 is finally transmitted to the driving wheel 200 through the second wheel 171, the second planet carrier 172, the third transmission wheel 164, the first transmission wheel 162, the transmission output shaft 161, the second transmission wheel 163, and the differential 165.

For example, as shown in fig. 12, the system operates in an electric-only mode, in which the clutch 150 is disengaged, and the power of the driving motor 120 is finally transmitted to the driving wheel 200 through the second wheel 171, the second planet carrier 172, the third transmission wheel 164, the first transmission wheel 162, the transmission output shaft 161, the second transmission wheel 163 and the differential 165.

For example, in the multi-mode switching process, the coupling state of the clutch can be changed according to the magnitude relation between the SOC value of the power battery and the preset first threshold value, so that the system realizes the multi-mode switching. Alternatively, the engaging state of the clutch may be changed according to a magnitude relation between a vehicle speed value driven by the driving wheel and a preset second threshold value, so that the system realizes multi-mode switching. Or, the combination state of the clutch may be changed according to the magnitude relation between the SOC value of the power battery and the preset first threshold value and the magnitude relation between the vehicle speed value driven by the driving wheel and the preset second threshold value, so that the system realizes multi-mode switching.

It should be noted that, the first threshold is used to determine the SOC value of the power battery, and the second threshold is used to determine the vehicle speed, the embodiment does not limit the value ranges of the first threshold and the second threshold, and the value ranges of the first threshold and the second threshold may be set freely according to a specific control strategy, and the values of the first threshold and the second threshold are different under different control strategies. After the first threshold value and the second threshold value are set, automatic judgment is carried out, and automatic switching is carried out among various modes according to the judgment result.

Illustratively, during braking, the driving motor 120 generates braking torque to brake the driving wheel 200, and simultaneously, induced current generated in the motor winding thereof charges the power battery, thereby realizing the recovery of braking energy.

In another aspect of the present disclosure, a vehicle is provided, where the vehicle includes the hybrid electromechanical coupling system described in the foregoing, and reference may be made to the above description specifically, and details of this embodiment are not repeated here.

The vehicle of the present embodiment has the hybrid electromechanical coupling system described above, and includes an engine, a driving motor, a generator, a first planetary gear mechanism, a clutch, and a gear train set, wherein an output shaft of the engine is connected to an input shaft of the clutch, an output shaft of the clutch is coupled to the gear train set, the gear train set is configured to be coupled to a driving wheel, an output shaft of the generator is connected to the first planetary gear mechanism, the first planetary gear mechanism is further connected to an output shaft of the engine and an input shaft of the clutch, respectively, and an output shaft of the driving motor is coupled to the gear train set. Therefore, the system can realize multi-mode switching by changing the combination state of the clutch, thereby meeting the requirements of different city working conditions and different vehicle types, covering HEV vehicle types and PHEV vehicle types and having good platformization. In addition, the generator carries out speed-up and torque-down through the first planetary gear transmission mechanism, so that the size of the generator can be effectively reduced.

It is to be understood that the above embodiments are merely exemplary embodiments that are employed to illustrate the principles of the present disclosure, and that the present disclosure is not limited thereto. It will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the disclosure, and these are to be considered as the scope of the disclosure.