The invention discloses an anti-slip control method and system for an electric vehicle, and the method comprises the steps: carrying out the fitting of scatter points in a preset hill-holding torque scatter diagram through a least square method based on the change rate of the rotating speed of a motor, and obtaining a function relation between the anti-slip torque and the change rate of the rotating speed of the motor; according to the function relation and the rotating speed change rate collected last time after entering the anti-slope-sliding mode, the anti-slope-sliding torque is obtained; according to the anti-slip torque and a preset first coefficient, feed-forward torque is generated; and applying or evacuating the feed-forward torque and the anti-slip torque to the vehicle based on the acquired slope gradient. According to the application, through the set entering, exiting and re-entering conditions of the anti-slope-sliding mode, the application and evacuation of the anti-slope-sliding torque are accurately carried out, and the electric vehicle is accurately controlled to complete slope parking in multiple scenes.

    本申请公开了一种电动汽车防溜坡控制方法及系统,其中方法包括:基于电机转速变化率,通过最小二乘法拟合预设的驻坡扭矩散点图中的散点,得到防溜坡扭矩于电机转速变化率的函数关系;根据所述函数关系和进入防溜坡模式后最近一次采集的转速变化率,得到防溜坡扭矩;根据防溜坡扭矩和预设的第一系数,生成前馈扭矩;基于采集的斜坡斜率,向车辆施加或撤离所述前馈扭矩和所述防溜坡扭矩。本申请通过设置的防溜坡模式的进入、退出和再次进入条件,精准进行防溜坡扭矩的施加和撤离,实现在多种场景中精准控制电动汽车完成驻坡。


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    Title :

    Slope sliding prevention control method and system for electric automobile


    Additional title:

    一种电动汽车防溜坡控制方法及系统


    Contributors:
    LIANG XUEYU (author) / HUANG WANWEI (author) / WANG DEQIANG (author) / LI RUIKE (author) / CHEN CHENG (author)

    Publication date :

    2025-03-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

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



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