CN-122008836-A - Hybrid power driving system and vehicle

CN122008836ACN 122008836 ACN122008836 ACN 122008836ACN-122008836-A

Abstract

The application provides a hybrid power drive system and a vehicle. The hybrid power drive system includes a power assembly, a transmission assembly, and a gear assembly. The power assembly comprises an engine, a first motor and a second motor. The transmission assembly comprises a first clutch piece, a second clutch piece, a first planetary row and a second planetary row. The gear assembly is disposed between the power assembly and the transmission assembly. The engine, the first motor and the second clutch piece are all connected with the first planetary row, the first clutch piece is arranged on the first planetary row, the second clutch piece, the second motor and the second planetary row are sequentially connected with at least one transmission shaft, and the second planetary row is connected with a pair of wheels. According to the application, through the cooperation of the first planetary row and the second planetary row, the coupling of the two clutch members and the transmission of the gear assembly, the direction control and the mode switching of the power flow can be realized by arranging the two motors, the structure of the hybrid power driving system is simplified, and the manufacturing cost is reduced.

Inventors

ZHOU DAOLIANG
SONG ZISEN
MAO JINLONG
HU CHENGSHUAI

Assignees

浙江吉利控股集团有限公司
吉利汽车研究院（宁波）有限公司

Dates

Publication Date: 20260512
Application Date: 20260320

Claims (10)

1. The hybrid power driving system is characterized by comprising a power assembly, a transmission assembly and a gear assembly, wherein the power assembly comprises an engine, a first motor and a second motor, the transmission assembly comprises a first clutch piece, a second clutch piece, a first planetary row and a second planetary row, the gear assembly is arranged between the power assembly and the transmission assembly, the engine, the first motor and the second clutch piece are connected with the first planetary row, the first clutch piece is arranged on the first planetary row, the second clutch piece, the second motor and the second planetary row are sequentially connected with at least one transmission shaft, and the second planetary row is connected with a pair of wheels.
2. The hybrid drive system of claim 1, wherein the first and second planetary rows each comprise a planet carrier, two sun gears, two planet gears, an input shaft, a first output shaft and a second output shaft disposed on the planet carrier, the input shaft is in driving connection with the planet carrier, the two sun gears are meshed with the two planet gears, and the first output shaft and the second output shaft are respectively connected with the two sun gears and coaxially rotate.
3. The hybrid drive system according to claim 2, wherein the first motor is connected to a first output shaft of the first planetary row, the first clutch is provided between the carrier and the first output shaft or between the carrier and the second output shaft of the first planetary row, the second output shaft of the first planetary row is connected to the second clutch, and the first output shaft and the second output shaft of the second planetary row are connected to the pair of wheels, respectively.
4. The hybrid drive system of claim 3 wherein the gear assembly includes a first gear set connecting the engine with the input shaft of the first planetary row, a second gear set connecting the second electric machine with the drive shaft, and a third gear set connecting the drive shaft with the input shaft of the second planetary row.
5. The hybrid drive system of claim 4, wherein the gear assembly further comprises a fourth gear set disposed between the first motor and the first output shaft of the first planetary row.
6. The hybrid propulsion system of claim 5 wherein the transmission assembly further comprises a first brake connecting the fourth gear set with the first output shaft of the first row of planets and a second brake connecting the second output shaft of the first row of planets with the transmission shaft.
7. The hybrid drive system of claim 6, further comprising a gearbox disposed on the drive shaft, the gearbox disposed between the second clutch and the second or third gear set.
8. The hybrid drive system of claim 7, wherein the first clutch and the second clutch are clutches or synchronizers.
9. The hybrid drive system of claim 1, wherein the different operating states of the engine, the first electric machine, the second electric machine, and the first clutch and the second clutch are locked or unlocked to form a plurality of operating modes, the plurality of operating modes including a park power mode, a pure electric mode, a series mode, a parallel mode, and a power split mode.
10. A vehicle comprising a hybrid drive system according to any one of claims 1-9.

Description

Hybrid power driving system and vehicle Technical Field The application relates to the field of vehicles, in particular to a hybrid power driving system and a vehicle. Background With the increasing severity of environmental pollution, new energy automobiles have become an important direction for the automobile industry. Hybrid vehicles are currently a transitional technology route of practical use. Among the hybrid power drive systems, the four-wheel drive system can provide more excellent vehicle dynamics, steering stability and trafficability in bad road conditions, so the four-wheel drive hybrid power system becomes an important point for development of various large vehicle enterprises. The existing power system architecture of the hybrid electric vehicle is mainly divided into four basic types of parallel connection, serial connection, series-parallel connection and power split. The parallel architecture realizes parallel driving, the serial architecture realizes serial driving, the parallel and serial driving can be realized by the serial architecture, and the power splitting architecture realizes power splitting driving. However, in order to switch between multiple modes, the hybrid driving system of the prior art has a complex system architecture or needs to use three motors, and has a complex structure and high manufacturing cost. Meanwhile, the existing hybrid power driving system can only realize one or two of the four driving modes, and can not integrate all four driving modes in the same system, so that the performance of the vehicle under various complex working conditions is limited, and the power performance and the economy can not be optimized. Accordingly, there is a need to provide an improved hybrid drive system and vehicle that address the above-described issues. Disclosure of Invention The application provides a hybrid power drive system and a vehicle with a simplified structure and low manufacturing cost. The application provides a hybrid power driving system which comprises a power assembly, a transmission assembly and a gear assembly, wherein the power assembly comprises an engine, a first motor and a second motor, the transmission assembly comprises a first clutch piece, a second clutch piece, a first planetary row and a second planetary row, the gear assembly is arranged between the power assembly and the transmission assembly, the engine, the first motor and the second clutch piece are all connected with the first planetary row, the first clutch piece is arranged on the first planetary row, the second clutch piece, the second motor and the second planetary row are sequentially connected with at least one transmission shaft, and the second planetary row is connected with a pair of wheels. Further, the first planet row and the second planet row comprise a planet carrier, two sun gears, two planet gears, an input shaft, a first output shaft and a second output shaft which are arranged on the planet carrier, the input shaft is in transmission connection with the planet carrier, the two sun gears are meshed with the two planet gears, and the first output shaft and the second output shaft are respectively connected with the two sun gears and coaxially rotate. Further, the first motor is connected with a first output shaft of the first planetary gear set, the first clutch is arranged between the planet carrier and the first output shaft or between the planet carrier and the second output shaft of the first planetary gear set, the second output shaft of the first planetary gear set is connected with the second clutch, and the first output shaft and the second output shaft of the second planetary gear set are respectively connected with the pair of wheels. The gear assembly further comprises a first gear set, a second gear set and a third gear set, wherein the first gear set is connected with the engine and the input shaft of the first planetary gear set, the second gear set is connected with the second motor and the transmission shaft, and the third gear set is connected with the transmission shaft and the input shaft of the second planetary gear set. Further, the gear assembly also includes a fourth gear set disposed between the first motor and the first output shaft of the first planetary gear set. Further, the transmission assembly further comprises a first braking piece and a second braking piece, wherein the first braking piece is connected with the fourth gear set and the first output shaft of the first planetary gear set, and the second braking piece is connected with the second output shaft of the first planetary gear set and the transmission shaft. The clutch mechanism further comprises a gearbox, wherein the gearbox is arranged on the transmission shaft, and the gearbox is arranged between the second clutch piece and the second gear set or the third gear set. Further, the first clutch member and the second clutch member are clutches or synchronizers. Further, different working