Dual-motor hybrid power system

Abstract

The invention discloses a dual-motor hybrid power system. According to the dual-motor hybrid power system, the first end of a shock absorber is fixedly connected with an output shaft of an engine; the first end of the first transmission assembly is fixedly connected with the second end of the shock absorber; the generator comprises a generator rotor and a generator stator, the first end of the generator rotor is fixedly connected with the second end of the first transmission assembly, and the second end of the generator rotor is provided with a mounting part; the clutch comprises a clutch driving end and a clutch driven end; the clutch driving end is fixedly arranged on the mounting part of the generator rotor; the first end of the first output shaft is fixedly connected with the clutch driven end; the driving motor comprises a driving motor rotor and a driving motor stator, and the driving motor rotor is fixedly connected with the second end of the first output shaft; the first gear is arranged between the generator and the driving motor, and the first gear is fixedly connected with the first output shaft; the first end of the second transmission assembly is in transmission connection with the first gear; the differential mechanism is fixedly connected with the second end of the second transmission assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle-mounted hybrid power systems, and in particular to a dual-motor hybrid power system. Background Art

[0002] The current gearboxes dedicated to hybrid vehicles are designed to achieve a sufficiently large reduction ratio for the drive motor, resulting in a large structural volume and difficulty in front cabin layout. Summary of the invention

[0003] To solve at least one aspect of the above problems, the present invention provides a dual-motor hybrid system, comprising: an engine; a shock absorber, wherein a first end of the shock absorber is fixedly connected to an output shaft of the engine; a first transmission assembly, wherein a first end of the first transmission assembly is fixedly connected to a second end of the shock absorber; a generator, wherein the generator comprises a generator rotor and a generator stator, wherein a first end of the generator rotor is fixedly connected to a second end of the first transmission assembly, and a mounting portion is provided at the second end of the generator rotor; a clutch, wherein the clutch comprises a clutch active end and a clutch passive end, wherein the clutch active end is fixedly provided at the mounting portion of the generator rotor; a first output shaft, wherein a first end of the first output shaft is fixedly connected to the clutch passive end; a drive motor, wherein the drive motor comprises a drive motor rotor and a drive motor stator, wherein the drive motor rotor is fixedly connected to a second end of the first output shaft, and the drive motor is coaxially arranged with the generator; a first gear, wherein the first gear is arranged between the generator and the drive motor, and wherein the first gear is fixedly connected to the first output shaft; a second transmission assembly, wherein a first end of the second transmission assembly is transmission-connected to the first gear; a differential, wherein the differential is fixedly connected to a second end of the second transmission assembly, and wherein the differential is transmission-connected to the first gear via the second transmission assembly.

[0004] Preferably, the first transmission assembly includes a power input shaft, a planetary gear and a second output shaft, the first end of the power input shaft is fixedly connected to the shock absorber, the second end of the power input shaft is fixedly connected to the first end of the planetary gear bracket of the planetary gear, the second end of the planetary gear bracket is fixedly connected to the planetary gear of the planetary gear, the planetary gear of the planetary gear is meshed with the planetary gear sun gear, the second output shaft is fixedly connected to the planetary gear sun gear, and the second output shaft and the power input shaft are arranged in the same line.

[0005] Preferably, the second transmission assembly includes a third output shaft, a duplex gear and a fourth gear, the third output shaft is fixedly connected to the duplex gear, the input gear of the duplex gear is meshed with the first gear, the output gear of the duplex gear is meshed with the fourth gear, and the fourth gear is fixedly connected to the housing of the differential.

[0006] Preferably, the second transmission assembly includes a third output shaft, a second gear, a third gear and a fourth gear, the second gear is meshed with the first gear, the second gear is fixedly connected to the third output shaft, the third gear is fixedly connected to the third output shaft, the fourth gear is meshed with the third gear, and the fourth gear is fixedly connected to the housing of the differential.

[0007] Preferably, the first transmission assembly includes a power input shaft, a ring gear, a fifth gear and a second output shaft, the first end of the power input shaft is fixedly connected to the shock absorber, the second end of the power input shaft is fixedly connected to the ring gear, the fifth gear is meshed with the ring gear, the first end of the second output shaft is fixedly connected to the fifth gear, and the second end of the second output shaft is fixedly connected to the first end of the generator rotor.

[0008] Preferably, the diameter of the fifth gear is smaller than the radius of the ring gear.

[0009] Preferably, the second transmission assembly includes a third output shaft, a second gear, a third gear and a fourth gear, the second gear is meshed with the first gear, the second gear is fixedly connected to the third output shaft, the third gear is fixedly connected to the third output shaft, the fourth gear is meshed with the third gear, and the fourth gear is fixedly connected to the housing of the differential.

[0010] Preferably, the second transmission assembly includes a third output shaft, a duplex gear and a fourth gear, the third output shaft is fixedly connected to the duplex gear, the input gear of the duplex gear is meshed with the first gear, the output gear of the duplex gear is meshed with the fourth gear, and the fourth gear is fixedly connected to the housing of the differential.

[0011] Preferably, the radius of the input gear of the duplex gear is greater than the radius of the output gear of the duplex gear.

[0012] The dual-motor hybrid power system of the embodiment of the present invention has the following beneficial effects: the clutch and the generator are fully integrated and do not occupy axial space; the engine power output and the drive motor power output share some reduction gears, making the structure more compact; the engine output end is connected to the speed-up device, which is conducive to the miniaturization of the generator; and the overall size of the power system is reduced through the coaxial structure of the generator and the drive motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to better understand the above and other purposes, features, advantages and functions of the present invention, reference may be made to the embodiments shown in the accompanying drawings. The same reference numerals in the accompanying drawings refer to the same components. It should be understood by those skilled in the art that the accompanying drawings are intended to schematically illustrate the preferred embodiments of the present invention and have no limiting effect on the scope of the present invention, and the components in the drawings are not drawn to scale.

[0014] Figure 1 A schematic diagram of the structure of a dual-motor hybrid power system according to an embodiment of the present invention;

[0015] Figure 2 Another structural schematic diagram of a dual-motor hybrid power system according to an embodiment of the present invention;

[0016] Figure 3 It is another structural schematic diagram of a dual-motor hybrid power system according to an embodiment of the present invention;

[0017] Figure 4 Schematic diagram of another structure of the dual-motor hybrid power system according to an embodiment of the present invention.

[0018] Reference numerals:

[0019] 1. Engine; 2. Shock absorber; 3. Power input shaft; 4. Planetary gear bracket; 5. Planetary gear; 6. Planetary gear sun gear; 7. Second output shaft; 8. Generator rotor; 9. Generator stator; 10. Clutch active end; 11. Clutch passive end; 12. First output shaft; 13. First gear; 14. Drive motor rotor; 15. Drive motor stator; 16. Third output shaft; 17. Second gear; 18. Third gear; 19. Fourth gear; 20. Differential; 21. Ring gear; 22. Fifth gear; 23. Dual gear. DETAILED DESCRIPTION

[0020] The following is a description of exemplary embodiments of the present disclosure in conjunction with the accompanying drawings, including various details of the embodiments of the present disclosure to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. Similarly, for the sake of clarity and conciseness, descriptions of well-known functions and structures are omitted in the following description.

[0021] As used herein, the term "including" and its variations mean open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "based at least in part on". The terms "an example embodiment" and "an embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc. may refer to different or the same objects. Other explicit and implicit definitions may also be included below.

[0022] In order to at least partially solve the above problems and one or more of other potential problems, an embodiment of the present disclosure proposes a dual-motor hybrid system, including: an engine 1, a shock absorber 2, a first transmission assembly, a generator, a clutch, a first output shaft 12, a drive motor, a first gear 13, a second transmission assembly and a differential 20, wherein the first end of the shock absorber 2 is fixedly connected to the output shaft of the engine 1; the first end of the first transmission assembly is fixedly connected to the second end of the shock absorber 2; the generator includes a generator rotor 8 and a generator stator 9, the first end of the generator rotor 8 is fixedly connected to the second end of the first transmission assembly, and the second end of the generator rotor 8 is provided with a mounting portion; the clutch includes a clutch main The active end 10 and the passive end 11 of the clutch, the active end 10 of the clutch is fixedly arranged on the mounting part of the generator rotor 8; the first end of the first output shaft 12 is fixedly connected to the passive end 11 of the clutch; the drive motor includes a drive motor rotor 14 and a drive motor stator 15, the drive motor rotor 14 is fixedly connected to the second end of the first output shaft 12, and the drive motor and the generator are coaxially arranged; the first gear 13 is arranged between the generator and the drive motor, and the first gear 13 is fixedly connected to the first output shaft 12; the first end of the second transmission assembly is transmission-connected to the first gear 13; the differential 20 is fixedly connected to the second end of the second transmission assembly, and the differential 20 is transmission-connected to the first gear 13 through the second transmission assembly.

[0023] Specifically, Figure 1-Figure 4 As shown, the engine 1 is fixedly connected to the shock absorber 2 through the engine rotor, or the engine rotor of the engine 1 is fixedly connected to the engine output shaft, and the engine output shaft is fixedly connected to the shock absorber 2. The generator is drivingly connected to the engine 1 through the first transmission assembly and the shock absorber 2, the drive motor and the generator are coaxially arranged, the generator rotor 8 and the drive motor are provided with a mounting portion at the adjacent end, the clutch active end 10 is fixedly connected to the mounting portion, and the two ends of the first output shaft 12 are respectively fixedly connected to the drive motor rotor 14 and the clutch passive end 11. The first gear 13 is fixedly connected to the first output shaft 12 to achieve synchronous rotation with the first output shaft 12. The second transmission assembly is used for the transmission connection between the first gear 13 and the differential 20.

[0024] In the pure electric drive mode, the engine 1 does not work, and the drive motor outputs power, which is output to the first output shaft 12 through the drive motor rotor 14. The first output shaft 12 transmits the power to the first gear 13 fixedly connected thereto, and the first gear 13 transmits the power to the differential 20 through the second transmission assembly, and then outputs the power to the wheels. In this working condition, the energy source of the drive motor is the electric energy stored in the vehicle battery.

[0025] In the engine start mode, the generator outputs power, which is output through the generator rotor 8 and transmitted to the shock absorber 2 through the first transmission assembly. The shock absorber 2 transmits the power to the engine 1 to drive the rotor of the engine 1 to rotate, thereby starting the engine 1. At this time, the energy source of the generator is the electric energy stored in the vehicle battery.

[0026] In the power generation mode, the engine 1 outputs power, which is transmitted to the first transmission assembly through the shock absorber 2. The first transmission assembly transmits the power to the generator rotor 8 fixedly connected thereto and generates power through the generator. At this time, the drive motor can output power using the power generated by the generator, which is output to the first output shaft 12 through the drive motor rotor 14. The first output shaft 12 transmits the power to the first gear 13 fixedly connected thereto. The first gear 13 transmits the power to the differential 20 through the second transmission assembly, and then outputs it to the wheels.

[0027] In the engine direct drive mode, the clutch active end 10 is engaged with the clutch passive end 11. At this time, the engine 1 outputs power, which is transmitted to the first transmission assembly through the shock absorber 2. The first transmission assembly transmits the power to the generator rotor 8 fixedly connected thereto. The generator rotor 8 transmits the power to the first output shaft 12 through the clutch. The first output shaft 12 transmits the power to the first gear 13 fixedly connected thereto. The first gear 13 transmits the power to the differential 20 through the second transmission assembly, and then outputs the power to the wheels.

[0028] In the hybrid drive mode, in the above engine direct drive mode, the drive motor outputs power at the same time, and the power is output to the first output shaft 12 through the drive motor rotor 14. The first output shaft 12 transmits the power to the first gear 13 fixedly connected thereto, and the first gear 13 transmits the power to the differential 20 through the second transmission assembly, and then outputs the power to the wheels. At this time, the output power of the engine 1 and the output power of the drive motor are simultaneously output to drive the vehicle to travel, realizing hybrid drive.

[0029] In some embodiments, the first transmission assembly includes a power input shaft 3, a planetary gear and a second output shaft 7, the first end of the power input shaft 3 is fixedly connected to the shock absorber 2, the second end of the power input shaft 3 is fixedly connected to the first end of the planetary gear bracket 4 of the planetary gear, the second end of the planetary gear bracket 4 is fixedly connected to the planetary gear 5 of the planetary gear, the planetary gear 5 is meshed with the planetary gear sun gear 6, the second output shaft 7 is fixedly connected to the planetary gear sun gear 6, and the second output shaft 7 and the power input shaft 3 are arranged in the same line.

[0030] Specifically, Figure 1 As shown, the engine 1 and the generator are coaxially arranged, the two ends of the power input shaft 3 are respectively fixedly connected to the shock absorber 2 and the planetary gear, and the two ends of the second output shaft 7 are respectively fixedly connected to the generator rotor 8 and the planetary gear.

[0031] In some embodiments, the second transmission assembly includes a third output shaft 16, a second gear 17, a third gear 18 and a fourth gear 19, the second gear 17 is meshed with the first gear 13, the second gear 17 is fixedly connected to the third output shaft 16, the third gear 18 is fixedly connected to the third output shaft 16, the fourth gear 19 is meshed with the third gear 18, and the fourth gear 19 is fixedly connected to the housing of the differential 20.

[0032] Specifically, Figure 1 and Figure 3 As shown, the first end of the second transmission assembly is meshed with the first gear 13 through the second gear 17, and the second end of the second transmission assembly is fixedly connected to the differential 20 through the fourth gear 19. Thus, the transmission connection between the first gear 13 and the differential 20 is achieved through the second transmission assembly.

[0033] In some embodiments, the second transmission assembly includes a third output shaft 16, a dual gear 23 and a fourth gear 19, the third output shaft 16 is fixedly connected to the dual gear 23, the input gear of the dual gear 23 is meshed with the first gear 13, the output gear of the dual gear 23 is meshed with the fourth gear 19, and the fourth gear 19 is fixedly connected to the housing of the differential 20.

[0034] Specifically, Figure 2 As shown, the third output shaft 16 is rotatably disposed in the gearbox, the double gear 23 is fixedly connected to the third output shaft 16 , and the double gear 23 is coaxially disposed with the third output shaft 16 .

[0035] In the pure electric drive mode, the engine 1 does not work, and the drive motor outputs power. The power is output to the first output shaft 12 through the drive motor rotor 14. The first output shaft 12 transmits the power to the first gear 13 fixedly connected thereto. The first gear 13 transmits the power to the double gear 23 meshing therewith. The double gear 23 transmits the power to the fourth gear 19 meshing therewith. The fourth gear 19 transmits the power to the differential 20, and then outputs it to the wheels. In this working condition, the energy source of the drive motor is the electric energy stored in the battery of the whole vehicle.

[0036] In the engine start mode, the generator outputs power, and the power is transmitted to the second output shaft 7 through the generator rotor 8. The second output shaft 7 transmits the power to the planetary sun gear 6, and the planetary sun gear 6 transmits the power to the planetary planetary gear 5 meshed with it. The planetary planetary gear 5 transmits the power to the planetary gear bracket 4, and the planetary gear bracket 4 transmits the power to the power input shaft 3. The power input shaft 3 transmits the power to the shock absorber 2, and the shock absorber 2 transmits the power to the engine 1 and drives the engine 1 to rotate, thereby starting the engine 1. At this time, the energy source of the generator is the electric energy stored in the battery of the whole vehicle.

[0037] In the power generation mode, the engine 1 outputs power, which is transmitted to the power input shaft 3 through the shock absorber 2. The power input shaft 3 transmits the power to the planetary gear bracket 4, which transmits the power to the planetary gear 5, which transmits the power to the planetary gear sun gear 6 meshed with it, which transmits the power to the second output shaft 7, which transmits the power to the generator rotor 8 fixedly connected with it and generates power through the generator. At this time, the drive motor can output power using the power generated by the generator, which is output to the first output shaft 12 through the drive motor rotor 14, which transmits the power to the first gear 13 fixedly connected with it. The first gear 13 transmits the power to the double gear 23 meshed with it, which transmits the power to the fourth gear 19 meshed with it, which transmits the power to the differential 20, and then outputs it to the wheels.

[0038] In the engine direct drive mode, the clutch active end 10 is engaged with the clutch passive end 11. At this time, the engine 1 outputs power, which is transmitted to the power input shaft 3 through the shock absorber 2. The power input shaft 3 transmits the power to the planetary gear bracket 4, the planetary gear bracket 4 transmits the power to the planetary gear 5, the planetary gear 5 transmits the power to the planetary gear sun gear 6 meshed with it, the planetary gear sun gear 6 transmits the power to the second output shaft 7, the second output shaft 7 transmits the power to the generator rotor 8 fixedly connected thereto, the generator rotor 8 transmits the power to the first output shaft 12 through the clutch, the first output shaft 12 transmits the power to the first gear 13 fixedly connected thereto, the first gear 13 transmits the power to the double gear 23 meshed therewith, the double gear 23 transmits the power to the fourth gear 19 meshed therewith, the fourth gear 19 transmits the power to the differential 20, and then outputs it to the wheels.

[0039] In the hybrid drive mode, in the above engine direct drive mode, the drive motor outputs power at the same time, and the power is output to the first output shaft 12 through the drive motor rotor 14. The first output shaft 12 transmits the power to the first gear 13 fixedly connected thereto, and the first gear 13 transmits the power to the double gear 23 meshed therewith, and the double gear 23 transmits the power to the fourth gear 19 meshed therewith, and the fourth gear 19 transmits the power to the differential 20, and then outputs it to the wheels. At this time, the power output by the engine 1 and the power output by the drive motor are output simultaneously to drive the vehicle to travel, realizing hybrid drive.

[0040] In some embodiments, the first transmission assembly includes a power input shaft 3, a ring gear 21, a fifth gear 22 and a second output shaft 7, the first end of the power input shaft 3 is fixedly connected to the shock absorber 2, the second end of the power input shaft 3 is fixedly connected to the ring gear 21, the fifth gear 22 is meshed with the ring gear 21, the first end of the second output shaft 7 is fixedly connected to the fifth gear 22, and the second end of the second output shaft 7 is fixedly connected to the first end of the generator rotor 8.

[0041] Specifically, Figure 3 and Figure 4 As shown, the engine 1 is arranged in parallel with the drive motor and the generator. One end of the first transmission assembly is fixedly connected to the shock absorber 2 through the power input shaft 3, and the other end of the first transmission assembly is fixedly connected to the generator rotor 8 through the second output shaft 7.

[0042] In some embodiments, the diameter of the fifth gear 22 is smaller than the radius of the gear ring 21. Those skilled in the art will appreciate that in other embodiments, the diameter of the fifth gear 22 is greater than or equal to the radius of the gear ring 21 and smaller than the diameter of the gear ring 21.

[0043] In some embodiments, the second transmission assembly includes a third output shaft 16, a second gear 17, a third gear 18 and a fourth gear 19, the second gear 17 is meshed with the first gear 13, the second gear 17 is fixedly connected to the third output shaft 16, the third gear 18 is fixedly connected to the third output shaft 16, the fourth gear 19 is meshed with the third gear 18, and the fourth gear 19 is fixedly connected to the housing of the differential 20.

[0044] Specifically, Figure 3 In the dual-motor hybrid system shown, the rotor of the engine 1 is fixedly connected to the shock absorber 2, and the shock absorber 2 is connected to the generator rotor 8 through the first transmission assembly. The first transmission assembly includes a power input shaft 3, a ring gear 21, a fifth gear 22, and a second output shaft 7. The first end of the power input shaft 3 is fixedly connected to the shock absorber 2, the second end of the power input shaft 3 is fixedly connected to the ring gear 21, the fifth gear 22 is meshed with the ring gear 21, the first end of the second output shaft 7 is fixedly connected to the fifth gear 22, and the second end of the second output shaft 7 is fixedly connected to the first end of the generator rotor 8. The first end of the second transmission assembly is meshed with the first gear 13 through the second gear 17, and the second end of the second transmission assembly is fixedly connected to the differential 20 through the fourth gear 19. Thus, the transmission connection between the first gear 13 and the differential 20 is achieved through the second transmission assembly.

[0045] In another embodiment, the second transmission assembly includes a third output shaft 16, a double gear 23 and a fourth gear 19, the third output shaft 16 is fixedly connected to the double gear 23, the input gear of the double gear 23 is meshed with the first gear 13, the output gear of the double gear 23 is meshed with the fourth gear 19, and the fourth gear 19 is fixedly connected to the housing of the differential 20.

[0046] Specifically, Figure 4 In the dual-motor hybrid system shown, the rotor of the engine 1 is fixedly connected to the shock absorber 2, and the shock absorber 2 is connected to the generator rotor 8 through the first transmission assembly. The first transmission assembly includes a power input shaft 3, a ring gear 21, a fifth gear 22, and a second output shaft 7. The first end of the power input shaft 3 is fixedly connected to the shock absorber 2, the second end of the power input shaft 3 is fixedly connected to the ring gear 21, the fifth gear 22 is meshed with the ring gear 21, the first end of the second output shaft 7 is fixedly connected to the fifth gear 22, and the second end of the second output shaft 7 is fixedly connected to the first end of the generator rotor 8. The third output shaft 16 is rotatably arranged in the gearbox, the double gear 23 is fixedly connected to the third output shaft 16, and the double gear 23 is coaxially arranged with the third output shaft 16.

[0047] In some embodiments, the radius of the input gear of the duplex gear 23 is greater than the radius of the output gear of the duplex gear 23 .

[0048] Specifically, those skilled in the art will appreciate that the radius ratio between the input gear and the output gear of the dual gear 23 can be set according to any transmission requirements.

[0049] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the present invention.

Claims

1. A dual-motor hybrid system, characterized in that: include: engine; A shock absorber, a first end of which is fixedly connected to an output shaft of the engine; a first transmission assembly, wherein a first end of the first transmission assembly is fixedly connected to a second end of the shock absorber; A generator, the generator comprising a generator rotor and a generator stator, the first end of the generator rotor being fixedly connected to the second end of the first transmission assembly, and the second end of the generator rotor being provided with a mounting portion; A clutch, the clutch comprising a clutch active end and a clutch passive end, the clutch active end being fixedly disposed on a mounting portion of the generator rotor; A first output shaft, a first end of which is fixedly connected to the passive end of the clutch; A drive motor, wherein the drive motor comprises a drive motor rotor and a drive motor stator, wherein the drive motor rotor is fixedly connected to the second end of the first output shaft, and the drive motor is coaxially arranged with the generator; A first gear, the first gear is arranged between the generator and the driving motor, and the first gear is fixedly connected to the first output shaft; a second transmission assembly, wherein a first end of the second transmission assembly is transmission-connected to the first gear; A differential, wherein the differential is fixedly connected to the second end of the second transmission assembly, and the differential is transmission-connected to the first gear through the second transmission assembly.

2. The system according to claim 1, characterized in that The first transmission assembly includes a power input shaft, a planetary gear and a second output shaft, the first end of the power input shaft is fixedly connected to the shock absorber, the second end of the power input shaft is fixedly connected to the first end of the planetary gear bracket of the planetary gear, the second end of the planetary gear bracket is fixedly connected to the planetary gear of the planetary gear, the planetary gear of the planetary gear is meshed with the planetary gear sun gear, the second output shaft is fixedly connected to the planetary gear sun gear, and the second output shaft and the power input shaft are arranged in the same line.

3. The system according to claim 2, characterized in that The second transmission assembly includes a third output shaft, a duplex gear and a fourth gear, the third output shaft is fixedly connected to the duplex gear, the input gear of the duplex gear is meshed with the first gear, the output gear of the duplex gear is meshed with the fourth gear, and the fourth gear is fixedly connected to the housing of the differential.

4. The system according to claim 2, characterized in that The second transmission assembly includes a third output shaft, a second gear, a third gear and a fourth gear, the second gear is meshed with the first gear, the second gear is fixedly connected to the third output shaft, the third gear is fixedly connected to the third output shaft, the fourth gear is meshed with the third gear, and the fourth gear is fixedly connected to the housing of the differential.

5. The system according to claim 1, characterized in that The first transmission assembly includes a power input shaft, a ring gear, a fifth gear and a second output shaft, the first end of the power input shaft is fixedly connected to the shock absorber, the second end of the power input shaft is fixedly connected to the ring gear, the fifth gear is meshed with the ring gear, the first end of the second output shaft is fixedly connected to the fifth gear, and the second end of the second output shaft is fixedly connected to the first end of the generator rotor.

6. The system according to claim 5, characterized in that The diameter of the fifth gear is smaller than the radius of the ring gear.

7. The system according to claim 6, characterized in that The second transmission assembly includes a third output shaft, a second gear, a third gear and a fourth gear, the second gear is meshed with the first gear, the second gear is fixedly connected to the third output shaft, the third gear is fixedly connected to the third output shaft, the fourth gear is meshed with the third gear, and the fourth gear is fixedly connected to the housing of the differential.

8. The system according to claim 6, characterized in that The second transmission assembly includes a third output shaft, a duplex gear and a fourth gear, the third output shaft is fixedly connected to the duplex gear, the input gear of the duplex gear is meshed with the first gear, the output gear of the duplex gear is meshed with the fourth gear, and the fourth gear is fixedly connected to the housing of the differential.

9. The system according to claim 8, characterized in that The radius of the input gear of the duplex gear is greater than the radius of the output gear of the duplex gear.

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