POWER SYSTEM OF HYBRID ELECTRIC VEHICLE, POWER GENERATION CONTROL METHOD AND HYBRID ELECTRIC VEHICLE

摘要

This application discloses a hybrid electric vehicle, and a power system and a power generation control method thereof. The power system includes: an engine, configured to output power to a wheel of the hybrid electric vehicle through a clutch; a power motor, configured to output driving power to a wheel of the hybrid electric vehicle; a power battery, configured to supply power to the power motor; a DC-DC converter; a secondary motor, connected to the engine, the power motor, the DC-DC converter, and the power battery separately, where the secondary motor is driven by the engine to generate power; and a control module, configured to obtain an SOC value of the power battery and a vehicle speed of the hybrid electric vehicle, and control, according to the SOC value of the power battery and the vehicle speed of the hybrid electric vehicle, the secondary motor to enter a generating power adjustment mode, to enable the engine to operate in a preset optimal economic zone. Therefore, fuel consumption of the engine can be reduced, economy of operation of the whole vehicle is improved, and noise of the engine can be reduced. In addition, a plurality of driving modes can be implemented, and low-speed electric balance and low-speed smoothness of the whole vehicle can be maintained.