The invention relates to an electric vehicle motor mode conversion and torque limiting method, which comprises the following steps of: judging a motor mode of an electric vehicle based on a vehicle state and vehicle information; on the basis of the motor mode, the torque limitation of the electric vehicle is obtained, and the vehicle state comprises a low-voltage state, a high-voltage drivable state and a charging state; the vehicle information comprises the current gear, the required torque, the maximum discharging/charging power of a battery, the peak torque of a motor, the current vehicle speed, fault types, the rotating speed of the motor, DCDC power, air conditioner power, PTC power and special working conditions, and the fault types comprise the vehicle speed limiting fault, the power limiting fault, the power output forbidding fault and the high voltage lowering fault; the special working conditions comprise a constant-speed cruise working condition and an anti-slip working condition. According to the electric automobile motor mode conversion and torque limiting method, the torque requirement can be responded in time, and the stability and comfort of a new energy automobile are improved.

    本发明涉及一种电动汽车电机模式转换及扭矩限制方法,所述扭矩限制方法包括基于车辆状态和车辆信息,判断电动汽车的电机模式;基于电机模式,获得电动汽车扭矩的限制,其中,所述车辆状态包括低压状态、高压可行驶状态和充电状态;所述车辆信息包括当前档位、需求扭矩、电池最大放电/充电功率、电机峰值扭矩、当前车速、故障类型、电机转速、DCDC功率、空调功率、PTC功率、特殊工况,其中,所述故障类型包括限制车速故障、限功率故障、禁止动力输出故障、下高压故障;所述特殊工况包括定速巡航,防溜坡工况。本发明提供的一种电动汽车电机模式转换及扭矩限制方法,能及时地响应扭矩需求,提高了新能源汽车的稳定性和舒适性。


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    Title :

    Motor mode conversion and torque limiting method for electric vehicle


    Additional title:

    一种电动汽车电机模式转换及扭矩限制方法


    Contributors:
    WANG JUN (author) / XIANG NANJUN (author)

    Publication date :

    2023-08-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

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



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