POWER-DRIVEN SYSTEM FOR VEHICLE AND VEHICLE

• US 20190308495A1
• Filed: 08/04/2017
• Published: 10/10/2019
• Est. Priority Date: 09/28/2016
• Status: Active Grant

• Current Assignee: BYD Company Limited
• Original Assignee: BYD Company Limited
• Inventors: LIAN, Yubo, LING, Heping, ZHAI, Zhen, WU, Fei, XU, Youbin
• Granted Patent: US 10,850,599 B2
• Time in Patent Office: Days
• CPC Class Codes: B60K 17/02 characterised by arrangement, location, or kind of clutch
• CPC Class Codes: B60K 17/08 of mechanical type
• CPC Class Codes: B60K 17/16 of differential gearing
• CPC Class Codes: B60K 17/28 characterised by arrangement, location, or type of power take-off
• CPC Class Codes: B60K 2006/4808 Electric machine connected or connectable to gearbox output shaft
• CPC Class Codes: B60K 2006/4825 Electric machine connected or connectable to gearbox input shaft
• CPC Class Codes: B60K 2006/4841 the gear provides shifting between multiple ratios
• CPC Class Codes: B60K 6/24 characterised by the combustion engines
• CPC Class Codes: B60K 6/26 characterised by the motors or the generators
• CPC Class Codes: B60K 6/36 characterised by the transmission gearings
• CPC Class Codes: B60K 6/387 Actuated clutches, i.e. clutches engaged or disengaged by electric, hydraulic or mechanical actuating means
• CPC Class Codes: B60K 6/40 characterised by the assembly or relative disposition of components
• CPC Class Codes: B60K 6/42 characterised by the architecture of the hybrid electric vehicle
• CPC Class Codes: B60K 6/442 Series-parallel switching type
• CPC Class Codes: B60K 6/48 Parallel type
• CPC Class Codes: B60K 6/485 Motor-assist type
• CPC Class Codes: B60K 6/547 the transmission being a stepped gearing
• CPC Class Codes: F16H 2003/0822 characterised by the arrangement of at least one reverse gear
• CPC Class Codes: F16H 2003/0931 each countershaft having an output gear meshing with a single common gear on the output shaft
• CPC Class Codes: F16H 2200/0052 the gear ratios comprising six forward speeds
• CPC Class Codes: F16H 3/006 : power being selectively transmitted by either one of the parallel flow paths
• CPC Class Codes: F16H 3/093 : with two or more countershafts
• CPC Class Codes: Y02T 10/62 : Hybrid vehicles

Abstract

The present disclosure provides a power-drive system for a vehicle and a vehicle. The power-drive system comprises: an engine; a plurality of input shafts, the engine being configured to selectively engage with at least one of the plurality of input shafts; a plurality of output shafts; a first motor power shaft, a motor power shaft first gear being arranged on the first motor power shaft, the motor power shaft first gear and the plurality of output shafts linking with a differential of the vehicle respectively; a second motor power shaft, a motor power shaft second gear linking with one gear-position driven gear being arranged on the second motor power shaft; a transfer gear, configured to selectively engage with the motor power shaft first gear to link with the motor power shaft first gear, and selectively engage with the motor power shaft second gear to link with the motor power shaft second gear; and a first motor generator, configured to link with the transfer gear.

Claims

1. A power-drive system for a vehicle, comprising:

an engine;

a plurality of input shafts, the engine being configured to selectively engage with at least one of the plurality of input shafts, and a gear-position driving gear being arranged on each input shaft;

a plurality of output shafts, a gear-position driven gear being arranged on each output shaft, the gear-position driven gears correspondingly meshing with the gear-position driving gears;

a first motor power shaft, a motor power shaft first gear being arranged on the first motor power shaft, and the motor power shaft first gear and the plurality of output shafts linking with a differential of the vehicle respectively;

a second motor power shaft, a motor power shaft second gear being arranged on the second motor power shaft, and the motor power shaft second gear linking with one gear-position driven gear;

a transfer gear, configured to selectively engage with the motor power shaft first gear to link with the motor power shaft first gear, and selectively engage with the motor power shaft second gear to link with the motor power shaft second gear; and

a first motor generator, configured to link with the transfer gear.

2. The power-drive system for a vehicle according to claim 1, further comprising:

a first clutch device, arranged between the engine and the plurality of input shafts; and

a second motor generator, the second motor generator and the engine being located on an input side of the first clutch device, the plurality of input shafts being located on an output side of the first clutch device, and the second motor generator being configured to carry out stationary power generation using at least part of power of the engine when the vehicle is parked.

3. The power-drive system for a vehicle according to claim 2, wherein the first clutch device is a double-clutch device and has an input end, a first output end and a second output end, the input end selectively engaging with at least one of the first output end and the second output end.

4. The power-drive system for a vehicle according to claim 3, wherein the input end is provided with input end outer teeth, and the second motor generator links with the input end outer teeth.

5. The power-drive system for a vehicle according to claim 3, wherein the second motor generator is coaxially connected with the input end of the first clutch device.

6. The power-drive system for a vehicle according to claim 2, wherein a second clutch device is arranged between the second motor generator and the engine.

7. The power-drive system for a vehicle according to claim 6, wherein the second clutch device is arranged inside a rotor of the second motor generator.

8. The power-drive system for a vehicle according to claim 7, wherein the engine, the second clutch device and the input end of the first clutch device are arranged coaxially.

9. The power-drive system for a vehicle according to claim 2, wherein the rated power of the first motor generator is greater than that of the second motor generator.

10. The power-drive system for a vehicle according to claim 9, wherein the rated power of the first motor generator is two or more times that of the second motor generator.

11. The power-drive system for a vehicle according to claim 2, wherein the second motor generator is located between the first clutch device and the engine.

12. The power-drive system for a vehicle according to claim 1, wherein a motor power shaft third gear is further freely sleeved on the first motor power shaft, the motor power shaft third gear meshes with the transfer gear, and a first motor power shaft synchronizer for engaging the motor power shaft third gear with the first motor power shaft is further arranged on the first motor power shaft.

13. The power-drive system for a vehicle according to claim 1, wherein the motor power shaft first gear is fixedly arranged on the first motor power shaft.

14. The power-drive system for a vehicle according to claim 1, wherein the motor power shaft second gear is idly sleeved on the second motor power shaft, and a second motor power shaft synchronizer for engaging the motor power shaft second gear with the second motor power shaft is further arranged on the second motor power shaft.

15. The power-drive system for a vehicle according to claim 14, wherein the first motor power shaft synchronizer and the second motor power shaft synchronizer share a first shift mechanism, and the engagement and disengagement states of the motor power shaft first gear and the first motor power shaft are opposite to those of the motor power shaft second gear and the second motor power shaft.

16. The power-drive system for a vehicle according to claim 14, further comprising:

an intermediate idle gear, being idly sleeved on the first motor power shaft and meshing with one gear-position driven gear and the motor power shaft second gear respectively.

17. The power-drive system for a vehicle according to claim 12, wherein a motor power shaft fourth gear is further fixedly arranged on the second motor power shaft, and the motor power shaft fourth gear meshes with the transfer gear.

18. The power-drive system for a vehicle according to claim 1, wherein

a reversing output gear is freely sleeved on one of the plurality of output shafts, and a reversing synchronizer for engaging the reversing output gear with the one of the plurality of output shafts is further arranged on the output shaft;

and

the power-drive system further comprises;

a reversing shaft, a first reversing shaft gear and a second reversing shaft gear being fixedly arranged on the reversing shaft, the first reversing shaft gear meshing with one gear-position driving gear, and the second reversing shaft gear meshing with the reversing output gear.

20. The power-drive system for a vehicle according to claim 18, wherein

the plurality of input shafts comprises:

a first input shaft and a second input shaft, the second input shaft being sleeved on the first input shaft, a first-gear driving gear, a third-gear driving gear and a fifth-gear driving gear being arranged on the first input shaft, and a second-gear driving gear and a fourth-sixth-gear driving gear being arranged on the second input shaft;

the plurality of output shafts comprises;

a first output shaft and a second output shaft, a first-gear driven gear, a second-gear driven gear, a third-gear driven gear and a fourth-gear driven gear being freely sleeved on the first output shaft, and a fifth-gear driven gear and a sixth-gear driven gear being freely sleeved on the second output shaft;

a first-third-gear synchronizer is arranged between the first-gear driven gear and the third-gear driven gear, a second-fourth-gear synchronizer is arranged between the second-gear driven gear and the fourth-gear driven gear, a fifth-gear synchronizer is arranged on one side of the fifth-gear driven gear, and a sixth-gear synchronizer is arranged on one side of the sixth-gear driven gear.

19. (canceled)

21. (canceled)

22. (canceled)

23. A vehicle, comprising:

a power-drive system including;

an engine;

a plurality of input shafts, the engine being configured to selectively engage with at least one of the plurality of input shafts, and a gear-position driving gear being arranged on each input shaft;

a plurality of output shafts, a gear-position driven gear being arranged on each output shaft, the gear-position driven gears correspondingly meshing with the gear-position driving gears;

a first motor power shaft, a motor power shaft first gear being arranged on the first motor power shaft, and the motor power shaft first gear and the plurality of output shafts linking with a differential of the vehicle respectively;

a second motor power shaft, a motor power shaft second gear being arranged on the second motor power shaft, and the motor power shaft second gear linking with one gear-position driven gear;

a transfer gear, configured to selectively engage with the motor power shaft first gear to link with the motor power shaft first gear, and selectively engage with the motor power shaft second gear to link with the motor power shaft second gear; and

a first motor generator, configured to link with the transfer gear.