Power system and power generation control method of hybrid electric vehicle and hybrid electric vehicle

Abstract

The invention discloses a power system and a power generation control method of a hybrid electric vehicle and the hybrid electric vehicle. The power system comprises an engine, a power motor, a powerbattery, a DC-DC converter, an auxiliary motor and a control module, wherein the engine outputs power to wheels of the hybrid electric vehicle through a clutch; the power motor is used for outputtingdriving force to the wheels of the hybrid electric vehicle, wherein the engine and the power motor together drive a same wheel of the hybrid electric vehicle; the power battery is used for supplying power to the power motor; the auxiliary motor is connected with the engine, the auxiliary motor is correspondingly connected with the power motor, the DC-DC converter and the power battery, and the auxiliary motor is driven by the engine to generate electricity; and the control module is used for acquiring a SOC value of the power battery and the vehicle speed of the hybrid electric vehicle and controlling the auxiliary motor to enter into a generated power regulation mode according to the SOC value of the power battery and the vehicle speed of the hybrid electric vehicle to enable the engine to run in the preset optimal economic zone, so that the stationarity of a whole vehicle system is improved, the energy consumption of the engine is reduced, and the economy is improved.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a power system of a hybrid electric vehicle, a hybrid electric vehicle, a power generation control method of a hybrid electric vehicle and a computer-readable storage medium. Background technique [0002] With the continuous consumption of energy, the development and utilization of new energy vehicles has gradually become a trend. As one of the new energy vehicles, a hybrid vehicle is driven by an engine and / or an electric motor. [0003] However, in the related art, the motor-generator of the hybrid electric vehicle acts as a driving motor while also acting as a generator, which results in a low rotation speed of the motor-generator when driving at low speed, and the power generation and efficiency of the motor are also very low, thus It cannot meet the electricity demand of low-speed driving, and it is relatively difficult for the whole vehicle to maintain low-speed electr...

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Problems solved by technology

[0003] However, in the related art, the motor-generator of the hybrid electric vehicle acts as a driving motor while also acting as a generator, which results in a low rotation speed of the motor-generator when driving at low speed, and the power generation and efficiency of the motor are also very low, thus Unable to meet the power demand of low-speed driving, it is relatively difficult to maintain the low-speed electric balance of the whole vehicle

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