The invention provides a control method for a motor of an electric vehicle and the electric vehicle. The control method for the motor comprises the steps that the current request torque of the motor and the current temperature of a stator of the motor are obtained; and determining the current torque upper limit of the motor corresponding to the current temperature according to the mapping relation between the temperature of the stator of the motor and the torque upper limit of the motor. And determining the current output torque according to the current request torque and the current torque upper limit. And controlling the motor according to the current output torque. If the temperature of the stator of the motor is greater than the critical temperature and less than or equal to the first equilibrium temperature, the torque upper limit of the motor is linearly attenuated from the peak torque to the first torque at a first attenuation rate. If the temperature of the stator of the motor is greater than the first equilibrium temperature and less than or equal to the limit temperature, the torque upper limit of the motor is attenuated from the first torque to the valley torque at a second attenuation rate. The phenomenon that the power of the whole electric automobile is lost can be prevented.

    本申请提供一种电动汽车的电机的控制方法及电动汽车,电机控制方法包括:获取电机的当前请求扭矩和电机的定子的当前温度。根据电机的定子的温度与电机的扭矩上限的映射关系,确定当前温度对应的电机的当前扭矩上限。根据当前请求扭矩和当前扭矩上限,确定当前输出扭矩。按照当前输出扭矩,控制电机。若电机的定子的温度大于临界温度、且小于等于第一平衡温度,电机的扭矩上限以第一衰减速率从峰值扭矩呈线性衰减至第一扭矩。若电机的定子的温度大于第一平衡温度、且小于等于极限温度,电机的扭矩上限以第二衰减速率从第一扭矩衰减至谷值扭矩。可以防止电动汽车整车动力丢失的现象产生。


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    Title :

    Control method for motor of electric automobile and electric automobile


    Additional title:

    电动汽车的电机的控制方法及电动汽车


    Contributors:
    LIU XINYUE (author) / ZHANG ZHENXING (author) / MA JINBO (author)

    Publication date :

    2023-11-24


    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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