The invention relates to the technical field of new energy automobiles, in particular to a torque control method and device, a vehicle and a storage medium, and the method comprises the steps that the current voltage of a high-voltage battery and the current temperature of a motor stator are obtained; the current temperature of the motor rotor is calculated according to the current temperature of the motor stator and the equivalent thermal network model of the motor rotor, the current voltage and the current temperature of the motor rotor serve as indexes, the efficiency table of the corresponding electric driving system is inquired, and the current efficiency of the electric driving system is determined; and the electric drive request torque of the electric drive system is calculated according to the current efficiency, the electric drive system is controlled to execute the electric drive request torque, and power is provided for the whole vehicle or energy recovery is achieved. Therefore, the problems that the actual consumed power of the battery in the electric mode exceeds the maximum allowable discharging power of the battery and the actual charging power in the energy recovery mode exceeds the maximum allowable charging power of the high-voltage battery due to the fact that the difference between the actual efficiency and the calibration efficiency of the electric driving system is large in the prior art are solved.

    本申请涉及新能源汽车技术领域,特别涉及一种扭矩控制方法、装置、车辆及存储介质,其中,方法包括:获取高压电池的当前电压和电机定子的当前温度;根据电机定子的当前温度和电机转子的等效热网络模型计算电机转子的当前温度,以当前电压和电机转子的当前温度为索引,查询对应的电驱动系统的效率表,确定电驱动系统的当前效率;根据当前效率计算电驱动系统的电驱请求扭矩,控制电驱动系统执行电驱请求扭矩,以为整车提供动力或者实现能量回收。由此,解决了现有技术中电驱动系统实际效率与标定效率差异较大,导致电动模式下的电池实际消耗功率超出电池最大允许放电功率以及能量回收模式下的实际充电功率超出高压电池最大允许充电功率等问题。


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    Title :

    Torque control method and device, vehicle and storage medium


    Additional title:

    扭矩控制方法、装置、车辆及存储介质


    Contributors:
    LUAN WENYUE (author) / ZHAO JIAWEI (author) / ZHANG YANG (author) / LU GUOCHENG (author) / DU CHANGHONG (author)

    Publication date :

    2023-09-15


    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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