The invention relates to the technical field of power batteries, and discloses a battery cell voltage balancing method, device and equipment, a vehicle and a storage medium. In some embodiments of the invention, the open-circuit voltage difference value of each battery cell is calculated in real time according to the electrical performance parameter of the battery pack and the electrical performance parameter of each battery cell in the battery pack; according to the collected current temperature of the mainboard of the battery management system, determining a target number of voltage balancing operations which can be carried out by the battery management system; the target number of target battery cells can be selected in real time based on the size relation of the open-circuit voltage difference values of all the battery cells; the method is not influenced by special working conditions such as charging and discharging, voltage balancing operation on the target battery cell is started in real time, the balancing capability of the balancing circuit is utilized to the maximum extent, the battery balancing utilization rate is improved, and the battery performance is improved.

    本公开涉及动力电池技术领域,公开了一种电芯电压均衡方法、装置、设备、车辆及存储介质。在本公开的一些实施例中,根据电池包的电性能参数和电池包中每个电芯的电性能参数,实时计算每个电芯的开路电压差值;根据采集到的电池管理系统主板的当前温度,确定电池管理系统能够进行电压均衡操作的目标个数;可以基于每个电芯的开路电压差值的大小关系,实时选择出目标个数的目标电芯;不受充放电等特殊工况的影响,实时开启对目标电芯进行电压均衡操作,最大化利用均衡电路的均衡能力,提高电池均衡利用率,提升电池性能。


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    Title :

    Battery cell voltage balancing method, device and equipment, vehicle and storage medium


    Additional title:

    电芯电压均衡方法、装置、设备、车辆及存储介质


    Contributors:
    WANG ZIYAN (author) / YANG YAFEI (author) / ZHU YOUZHI (author)

    Publication date :

    2024-05-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY



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