The invention discloses a braking energy feedback efficiency determination method and device, an electric automobile and a storage medium, and relates to the technical field of automobiles. The problems that an existing braking energy feedback efficiency determining method is high in testing difficulty, large in calculation amount and low in calculation precision are solved. The method comprises the steps that at each sampling moment, the total mass, the vehicle speed, the accelerated speed, the voltage value and the current value of the electric vehicle at the current moment are obtained; according to the total mass, the vehicle speed and the acceleration of the electric vehicle at the current moment, the total braking force and the braking power of the vehicle at the current moment are determined; determining the power battery feedback power of the electric vehicle at the current moment according to the voltage value and the current value of the electric vehicle at the current moment; and the braking energy feedback efficiency of the electric vehicle at the current moment is determined according to the vehicle braking power and the power battery feedback power of the electric vehicle at the current moment.

    本发明公开了制动能量回馈效率确定方法、装置、电动汽车及存储介质,涉及汽车技术领域。解决了现有制动能量回馈效率确定方法存在测试难度高,计算量大以及计算精度较低的问题。该方法包括:在每个采样时刻,获取当前时刻电动汽车的总质量、车速、加速度,电压值和电流值;根据当前时刻所述电动汽车的总质量、车速和加速度,确定当前时刻车辆总制动力和车辆制动功率;根据当前时刻所述电动汽车的电压值和电流值确定当前时刻所述电动汽车的动力电池回馈功率;根据当前时刻所述电动汽车的车辆制动功率和动力电池回馈功率确定当前时刻电动汽车制动能量回馈效率。


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    Title :

    Braking energy feedback efficiency determination method and device, electric vehicle and storage medium


    Additional title:

    制动能量回馈效率确定方法、装置、电动汽车及存储介质


    Contributors:
    ZHANG YING (author) / QI HAORAN (author) / JING ZHIMIN (author) / ZHOU SHUAIKANG (author) / WANG JIAN (author)

    Publication date :

    2022-04-29


    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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