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

Abstract

The invention discloses a hybrid electric vehicle and a power system and power generation control method of the hybrid electric vehicle. The power system comprises an engine, a power motor, a power battery, a DC-DC converter, an auxiliary motor and a control module. The engine outputs power to wheels of the hybrid electric vehicle through a clutch. The power motor is used for outputting driving force to the wheels of the hybrid electric vehicle. The power battery is used for supplying power to the power motor. The auxiliary motor is connected to the engine, the power motor, the DC-DC converterand the power battery, and the auxiliary motor generates power under the driving of the engine. The control module is used for obtaining the SOC value of the power battery and the vehicle speed of the hybrid electric vehicle, and controlling the auxiliary motor to enter a power generation power regulating mode according to the SOC value of the power battery and the vehicle speed of the hybrid electric vehicle, so that the engine runs in a preset optimal economic area, the fuel consumption of the engine is reduced, the economy of the whole vehicle operation is improved, and the engine noise isreduced; and at the same time, various driving modes can be realized, and the low-speed electric balance and low-speed smoothness of the entire vehicle can be maintained.

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 vehicle acts as a driving motor while also acting as a generator, which results in a low rotation speed of the motor-generator during low-speed driving, and the power and efficiency of the motor-generator are also very low. Low, so that it cannot meet the electricity demand for low-speed driving, and it is relatively difficult for the whole vehicle to maintain low-speed electric...

AI Technical Summary

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 and efficiency of the motor-generator are also very low. Low, so that it cannot meet the electricity demand for low-speed driving, and it is relatively difficult for the whole vehicle to maintain low-speed electric balance

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