# US 2019/0168600 A1 · Power drive system and vehicle

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- Number: US 2019/0168600 A1
- Document ID: US20190168600A1
- Status: Published application
- Kind: A1
- Application number: 16/313,982
- Filed: 2017-05-11
- Published: 2019-06-06
- Earliest claimed: 2016-06-29
- Assignees: BYD Company Limited
- Applicants: BYD Company Limited
- Inventors: Yubo LIAN; Heping LING; Zhen ZHAI; Youbin XU
- Web page: https://patentgrep.com/patent/US20190168600A1

## CPC

- B60K 6/36: characterised by the transmission gearings
- B60K 6/387: Actuated clutches, i.e. clutches engaged or disengaged by electric, hydraulic or mechanical actuating means
- B60K 6/40: characterised by the assembly or relative disposition of components
- B60K 6/442: Series-parallel switching type
- B60K 6/48: Parallel type
- B60K 6/485: Motor-assist type
- B60K 6/547: the transmission being a stepped gearing
- B60K 17/08: of mechanical type
- B60K 17/16: of differential gearing
- F16H 3/006: {power being selectively transmitted by parallel flow paths, e.g. dual clutch transmissions}
- F16H 3/093: with two or more countershafts
- F16H 37/0806: {with a plurality of driving or driven shafts}
- F16H 48/22: using friction clutches or brakes
- F16H 48/24: using positive clutches or brakes
- B60K 2006/4808: {Electric machine connected or connectable to gearbox output shaft}
- B60K 2006/4833: {Step up or reduction gearing driving generator, e.g. to operate generator in most efficient speed range}
- B60Y 2200/92: Hybrid vehicles
- B60Y 2400/42: Clutches or brakes
- B60Y 2400/70: Gearings
- B60Y 2400/80: Differentials
- F16H 2003/0931: {each countershaft having an output gear meshing with a single common gear on the output shaft}
- F16H 2200/0056: the gear ratios comprising seven forward speeds
- Y02T 10/62: Hybrid vehicles
- B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- F16H: GEARING
- B60Y: INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

The present disclosure discloses a power drive system and a vehicle, the power drive system including: an engine; a transmission having a transmission power output portion; a first electric generator, the engine and the first electric generator being connected through the transmission by means of power coupling; and a differential having a differential power input portion and two differential power output portions, the differential power input portion being linked with the transmission power output portion, each of the differential power output portions being connected with a wheel on the same side, and a power engagement device being provided between one of the differential power output portions and the wheel on the same side.

## Claims

### Claim 1

A power drive system for a vehicle, comprising:
an engine;
a transmission having a transmission power output portion;
a first electric generator, the engine and the first electric generator being connected through the transmission by means of power coupling; and
a differential having a differential power input portion and two differential power output portions, the differential power input portion being linked with the transmission power output portion, each of the differential power output portions being connected with a wheel on the same side, and a power engagement device being provided between one of the differential power output portions and the wheel on the same side.

### Claim 2 (depends on 1)

The power drive system for a vehicle according to claim 1, wherein the power engagement device is a synchronizer.

### Claim 3 (depends on 1)

The power drive system for a vehicle according to claim 1, wherein the power engagement device is a clutch.

### Claim 4 (depends on 1)

The power drive system for a vehicle according to claim 1, wherein the first electric generator is linked with the differential power input portion.

### Claim 5 (depends on 1)

The power drive system for a vehicle according to claim 1, wherein the transmission comprises:
a plurality of input shafts, the engine being configured to be selectively engaged with at least one of the plurality of input shafts each provided with a gear driving gear;
a plurality of output shafts each provided with a gear driven gear, a plurality of gear driven gears being meshed with a plurality of gear driving gears correspondingly;
a reverse shaft provided with a first gear for the reverse shaft, the first gear for the reverse shaft being meshed with one of the gear driving gears; and
a reverse output gear linked with the reverse shaft.

### Claim 6 (depends on 5)

The power drive system for a vehicle according to claim 5, wherein the reverse shaft is provided with a first motor gear, with which the first electric generator is linked.

### Claim 7 (depends on 5)

The power drive system for a vehicle according to claim 5, wherein the first gear for the reverse shaft is idly arranged on the reverse shaft.

### Claim 8 (depends on 7)

The power drive system for a vehicle according to claim 7, wherein the power drive system further comprises: a first synchronizer for the reverse shaft to be engaged with the reverse shaft and the first gear for the reverse shaft.

### Claim 9 (depends on 8)

The power drive system for a vehicle according to claim 8, wherein the reverse output gear is fixed on one of the output shafts.

### Claim 10 (depends on 5)

The power drive system for a vehicle according to claim 5, wherein the first gear for the reverse shaft is fixed on the reverse shaft.

### Claim 11 (depends on 10)

The power drive system for a vehicle according to claim 10, wherein the reverse output gear is idly mounted on one of the output shafts and the reverse output gear is configured to be engageable with the one of the output shafts.

### Claim 12 (depends on 10)

The power drive system for a vehicle according to claim 10, further comprising: a reverse-gear synchronizer to be engaged with the reverse output gear and the one of the output shafts.

### Claim 13 (depends on 11)

The power drive system for a vehicle according to claim 11, wherein the reverse output gear shares the reverse-gear synchronizer with an adjacent gear driven gear.

### Claim 14 (depends on 5)

The power drive system for a vehicle according to claim 5, wherein the reverse shaft is fixedly provided with a second gear for the reverse shaft, which is meshed with the reverse output gear.

### Claim 15 (depends on 5)

The power drive system for a vehicle according to claim 5, wherein each of the output shafts is fixedly provided with an output gear for the output shaft, a plurality of output gears for the output shaft are meshed with the differential power input portion respectively, and the plurality of output gears for the output shaft constitute the transmission power output portion.

### Claim 16 (depends on 1)

The power drive system for a vehicle according to claim 1, wherein the transmission comprises:
a plurality of input shafts, the engine being configured to be selectively engaged with at least one of the plurality of input shafts each provided with a gear driving gear;
a plurality of output shafts each provided with a gear driven gear, a plurality of gear driven gears being meshed with a plurality of gear driving gears correspondingly; and
a reverse shaft idly arranged with a first gear for the reverse shaft engageable with the reverse shaft, the first gear for the reverse shaft being linked with one of the gear driving gears, wherein
the plurality of output shafts and the reverse shaft are linked with the differential power input portion respectively.

### Claim 17 (depends on 16)

The power drive system for a vehicle according to claim 16, wherein each of the output shafts is fixedly provided with an output gear for the output shaft, the reverse shaft is fixedly provided with an output gear for the reverse shaft, the output gear for the output shaft and the output gear for the reverse shaft are meshed with the differential power input portion respectively, and the output gear for the output shaft and the output gear for the reverse shaft constitute the transmission power output portion.

### Claim 18 (depends on 16)

The power drive system for a vehicle according to claim 16, wherein the reverse shaft is fixedly provided with a first motor gear, which is linked with the first electric generator.

### Claim 19 (depends on 16)

The power drive system for a vehicle according to claim 16, further comprising: a first synchronizer for the reverse shaft to be engaged with the reverse shaft and the first gear for the reverse shaft.

### Claim at position 20

20-21. (canceled)

### Claim 22 (depends on 1)

The power drive system for a vehicle according to claim 1, further comprising: a second electric generator configured to be linked with the engine.

### Claim at position 22

23-26. (canceled)