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

摘要

Provided are a hybrid electric vehicle, a power system thereof, and a power generation control method. The power system comprises: an engine (1) for outputting power to wheels (7) of a hybrid electric vehicle by means of a clutch (6); a power electric motor (2) for outputting a driving force to the wheels (7) of the hybrid electric vehicle; a power battery (3) for supplying power to the power electric motor (2); a DC-DC converter (4); a secondary electric motor (5) respectively connected to the engine (1), the power electric motor (2), the DC-DC converter (4) and the power battery (3), and driven by the engine (1) to generate power; and a control module (101) for obtaining an SOC value of the power battery (3), and the speed of the hybrid electric vehicle, and controlling the secondary electric motor (5) so that same enters a generation power regulation mode according to the SOC value of the power battery (3), and the speed of the hybrid electric vehicle, so that the engine (1) operates in a pre-set best economic area, thus the oil consumption of the engine (1) can be reduced, the economical efficiency of the operation of a whole vehicle can be improved, and the noise of the engine (1) is reduced, while various driving modes can be realised, and the low-speed electric power balance and low-speed ride comfort of the whole vehicle can be maintained.