The invention relates to the technical field of power batteries, and discloses a battery electric quantity balancing method, device and system and a storage medium, and the method comprises the steps: when a vehicle is powered off, if a BMS judges that the electric quantity of a power battery needs to be balanced, obtaining the available capacity of each single battery in the power battery; determining the average capacity of the power battery according to the available capacity, and determining a to-be-balanced single battery according to the available capacity and the average capacity; and the equalization loop corresponding to the to-be-equalized single battery is conducted through the BMS, so that the electric quantity of the to-be-equalized single battery is equalized when the equalization loop is conducted. Since the electric quantity of the to-be-equalized single battery can be equalized through the equalization loop after the vehicle is powered off, the equalization efficiency is improved compared with the existing method that the electric quantity is equalized only when the vehicle is in the tail end trickle charging stage.

    本发明涉及动力电池技术领域,公开了一种电池电量均衡方法、装置、系统及存储介质,该方法包括:在车辆下电时,若BMS判定需要对动力电池进行电量均衡,则获取动力电池中各单体电池的可用容量;根据可用容量确定动力电池的平均容量,并根据可用容量和平均容量确定待均衡单体电池;通过BMS导通待均衡单体电池对应的均衡回路,以使均衡回路导通时对待均衡单体电池进行电量均衡。由于本发明可在车辆下电后通过均衡回路对待均衡单体电池进行电量均衡,相比于现有的需要在车辆处于末端涓流充电阶段才进行电量均衡,本发明提升了均衡效率。


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    Titel :

    Battery electric quantity balancing method, device and system and storage medium


    Weitere Titelangaben:

    电池电量均衡方法、装置、系统及存储介质


    Beteiligte:
    CHEN CHUNHONG (Autor:in) / WEI YANGYANG (Autor:in) / WANG CHAO (Autor:in) / CHU HAOHAO (Autor:in)

    Erscheinungsdatum :

    2023-08-29


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

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



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