The invention discloses a vehicle power system control method and device and an electric vehicle. The method comprises the steps that the driving mode and operation condition parameters of the vehicle are obtained; obtaining a preset driving mode switching condition, wherein the preset driving mode switching condition is differentially set based on different driving modes; determining a driving mode switching strategy according to the driving mode, the operation condition parameters and a preset driving mode switching condition; performing a driving mode switching strategy: performing rotation speed control before combination on a front axle motor based on PI control, and performing combination control on a front axle connecting device based on the rotation speed control completion degree, so that the vehicle is switched to a four-wheel drive mode; or the front axle connecting device is subjected to disconnection control based on torque distribution, and after the device is disconnected, the front axle motor is subjected to rotation speed control after disconnection based on PI control, so that the vehicle is switched to the two-drive mode. By setting multiple switching conditions, driving mode switching control is achieved in combination with the vehicle working conditions, and the economical efficiency and the dynamic property of the vehicle are improved.

    本发明公开一种车辆动力系统控制方法、装置及电动车辆,该方法包括:获取车辆的驾驶模式和运行工况参数;获取预设驱动模式切换条件,预设驱动模式切换条件基于不同的驾驶模式进行差异化设置;根据驾驶模式、运行工况参数和预设驱动模式切换条件确定驱动模式切换策略;执行驱动模式切换策略:基于PI控制对前轴电机进行结合前转速控制,基于转速控制完成度对前轴连接装置进行结合控制,使车辆切换至四驱模式;或者,基于扭矩分配对前轴连接装置进行断开控制,装置断开后,基于PI控制对前轴电机进行断开后转速控制,使车辆切换至两驱模式。本发明通过设置多种切换条件,结合车辆工况实现驱动模式切换控制,改善车辆经济性和动力性。


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    Titel :

    Vehicle power system control method and device and electric vehicle


    Weitere Titelangaben:

    车辆动力系统控制方法、装置及电动车辆


    Beteiligte:
    ZHENG TONG (Autor:in) / YANG YUNBO (Autor:in) / ZHONG YUNFENG (Autor:in) / ZHAO PENGYAO (Autor:in) / HONG SHICAI (Autor:in) / CHEN GUODONG (Autor:in) / WANG HAO (Autor:in)

    Erscheinungsdatum :

    2023-07-04


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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