VEHICLE AND HYBRID POWER SYSTEM THEREOF, AND CONTROL METHOD FOR VEHICLE

摘要

Disclosed are a hybrid power system of a vehicle and a control method therefor. The hybrid power system of a vehicle comprises: an engine; a dual-clutch automatic transmission comprising an ISG motor; a first power unit and a second power unit; a power battery, the power battery being connected to the ISG motor by the first power unit; a power battery manager, the power battery manager being connected to the power battery and used to test an SOC of the power battery; a rear wheel drive motor, the rear wheel drive motor being connected to the power battery by the second power unit, and the rear wheel drive motor being connected to a rear speed reducer of the vehicle; and a vehicle controller, the vehicle controller being connected to the power battery manager, and the vehicle controller controlling the vehicle to enter a corresponding operating mode according to the SOC and drive required torque WTD at a wheel of the vehicle. The hybrid power system of a vehicle and the control method therefor can ensure that a vehicle operates in the best operating mode, thereby improving the performance of the vehicle.

主权项

1. A hybrid power system for a vehicle, comprising:
an engine; a dual-clutch automatic transmission, comprising an ISG motor, a first input shaft, a second input shaft, a general input shaft and a first output shaft, a second output shaft, a general output shaft, the dual-clutch automatic transmission is connected with the engine via one end of the general input shaft, the other end of the general input shaft is connected with the first input shaft and the second input shaft, via a first clutch and a second clutch respectively, the ISG motor is connected with one of the first input shaft and the second input shaft, one end of the general output shaft is connected with the first output shaft and the second output shaft respectively, the other end of the general output shaft is connected with a front reducer of the vehicle: a first power unit and a second power unit; a power battery, connected to the ISG motor via the first power unit; a BMS, connected with the power battery, for detecting a SOC of the power battery a rear wheel drive motor, connected with the power battery via the second power unit, and connected with the rear reducer of the vehicle; and a vehicle controller, connected with the BMS, and used for controlling the vehicle to enter a corresponding working mode, according to the SOC and a wheel torque demand WTD.