The invention belongs to the field of electric vehicles, and particularly relates to an electric vehicle, a motor control method and device thereof and a storage medium. The motor control method of the electric vehicle comprises the steps that the relative deformation quantity of a transmission system between a driving gear and a wheel end of a motor is detected; when the relative deformation quantity is a first threshold value, a first speed difference value between the first driving tooth rotating speed and the first wheel end conversion rotating speed is determined, the relative deformation quantity being the first threshold value is used for representing that a driving tooth and a driven tooth of the transmission system start to be separated, and the first driving tooth rotating speed is the rotating speed of the driving tooth at the moment when the driving tooth and the driven tooth are separated; the first wheel end conversion rotating speed is the rotating speed obtained by performing speed ratio conversion on the wheel end rotating speed of the electric vehicle at the separation moment; determining the output torque of the motor according to the first speed difference value; according to the output torque, the driving teeth are controlled to conduct tooth leaning operation relative to the driven teeth. Therefore, the problems of large vibration and noise of the motor and a transmission system are reduced and even avoided.

    本申请属于电动车辆领域,具体涉及一种电动车及其电机控制方法、装置和存储介质。本申请的电动车的电机控制方法包括:检测电机的主动齿与轮端之间的传动系统的相对形变量;在相对形变量为第一阈值时,确定第一主动齿转速与第一轮端换算转速的第一速度差值,相对形变量为第一阈值用于表示主动齿和传动系统的被动齿开始脱离,第一主动齿转速为在主动齿和被动齿的脱离时刻主动齿的转速,第一轮端换算转速为在脱离时刻,电动车的轮端转速经速比换算得到的转速;根据第一速度差值,确定电机的输出扭矩;根据输出扭矩,控制主动齿相对被动齿进行靠齿操作。从而降低甚至避免电机及传动系统出现较大的震动和噪音的问题。


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    Title :

    Electric vehicle, motor control method and device thereof and storage medium


    Additional title:

    电动车及其电机控制方法、装置和存储介质


    Contributors:
    SHEN KEQING (author) / MA YINGGUO (author) / CHEN QIMIAO (author)

    Publication date :

    2024-06-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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