The invention provides an electric automobile hill starting auxiliary control method and device, an electric automobile and a medium. The method comprises the steps that the driving state of the electric automobile is judged, and if the electric automobile is in the driving state, the real-time rotating speed and the real-time rotating speed change rate of a motor of the electric automobile are detected; setting a vehicle sliding judgment threshold value, entering a hill starting auxiliary mode when the real-time motor rotating speed is lower than the vehicle sliding judgment threshold value, and judging a motor torque compensation condition of the electric vehicle; and when the motor torque compensation condition is met, double closed-loop proportional-integral controller parameters are set according to the real-time rotating speed change rate, the real-time rotating speed and the real-time rotating speed change rate are used as input, closed-loop control output is performed to obtain target torque, and torque compensation is performed on the motor according to the target torque. Whether the vehicle slides on the slope or not and the slope sliding trend are judged according to the real-time rotating speed and the real-time rotating speed change rate, the target torque is calculated in real time through the double-closed-loop proportional-integral controller, real-time torque compensation is conducted on the motor, and stable auxiliary control over starting of the electric vehicle is achieved.

    本发明提供了一种电动汽车坡道起步辅助控制方法、装置、电动汽车及介质,包括:判断电动汽车行车状态,若处于行车状态检测电动汽车电机的实时转速和实时转速变化率;设置溜车判断阈值,实时电机转速低于溜车判断阈值时进入坡道起步辅助模式,判断电动汽车电机扭矩补偿条件;当满足电机扭矩补偿条件时,根据实时转速变化率设置双闭环比例积分控制器参数,以实时转速和实时转速变化率作为输入,闭环控制输出得到目标扭矩,根据目标扭矩对电机进行扭矩补偿。本发明通过实时转速和实时转速变化率以判断车辆是否出现溜坡以及溜坡趋势,通过双闭环比例积分控制器实时计算目标扭矩,对电机进行实时扭矩补偿,实现对电动汽车起步的稳定辅助控制。


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    Title :

    Electric automobile hill starting auxiliary control method and device, electric automobile and medium


    Additional title:

    电动汽车坡道起步辅助控制方法、装置、电动汽车及介质


    Contributors:
    CHEN HUI (author) / WEI ZHENGJI (author) / LIU GANG (author) / LI YANPENG (author) / YANG XIAOHUI (author)

    Publication date :

    2023-11-10


    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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