The invention relates to a driving motor torque distribution method and device, and an electric vehicle, and aims to solve a problem that an overall conversion rate of power of a power battery and total target torque is relatively low. The method comprises the following steps: determining the driving state of the electric vehicle and the total target torque of a driving motor of the electric vehicle, wherein the driving state is a driving state or a feedback driving state; according to the total target torque and mapping relation information corresponding to the driving state, determining thesingle-motor torque of each driving motor of the electric vehicle, wherein the mapping relation information is pre-calibrated in the driving state, and for different total target torque values, the proportions of the single-motor torques of all the driving motors in the total target torque are different; and allocating a single motor torque corresponding to each driving motor to the driving motor.The single motor torque of each driving motor can be distributed according to the working condition so that the overall conversion rate of the power of the power battery and the total target torque is effectively improved.

    本公开涉及一种驱动电机扭矩分配方法及装置,电动汽车,以解决动力电池功率与总目标扭矩整体转化率较低的问题,所述方法包括:确定电动汽车的行驶状态以及电动汽车的驱动电机的总目标扭矩,行驶状态为驱动行驶状态或回馈行驶状态;根据总目标扭矩,以及行驶状态对应的映射关系信息,确定电动汽车每一所述驱动电机的单电机扭矩,其中,映射关系信息是在行驶状态下预先标定的,且对于不同的总目标扭矩值,各个驱动电机的单电机扭矩在总目标扭矩中的占比不同;对每一驱动电机分配对应该驱动电机的单电机扭矩。本公开可以根据工况分配各驱动电机的单电机扭矩,从而有效地提高动力电池功率与总目标扭矩整体的转化率。


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    Title :

    Driving motor torque distribution method and device, and electric vehicle


    Additional title:

    驱动电机扭矩分配方法及装置,电动汽车


    Contributors:
    LIAO PENG (author) / ZHANG JINGHUA (author) / YOU JUN (author) / HAN YAOCHUAN (author) / TAN XIANHUA (author)

    Publication date :

    2021-03-12


    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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