The invention provides a battery cell equalization method and a battery management system. The method comprises the following steps: acquiring the battery cell equalization temperature of an automobile and the battery cell states of all the battery cells when the automobile is in a starting state; based on the battery cell equalization temperature and the battery cell state of each battery cell, determining whether the automobile needs to be subjected to battery cell equalization or not; if the automobile needs to be subjected to battery cell equalization, determining to-be-equalized battery cells needing to be equalized in all the battery cells by utilizing the voltage of each battery cell; and equalizing all the to-be-equalized battery cells. According to a scheme in the invention, whenthe automobile is in the starting state, whether the automobile needs to be subjected to battery cell equalization or not is determined according to the battery cell equalization temperature and the battery cell state; and if so, the to-be-equalized battery cells required to be equalized are determined and are equalized, so undervoltage of a battery caused by multiple self-awakening of the batterymanagement system after the automobile is shut down is avoided, normal starting of the automobile is guaranteed, and the use experience of the automobile is improved.

    本发明提供一种电芯均衡方法及电池管理系统,该方法为:汽车在启动状态下,获取汽车的电芯均衡温度和所有电芯的电芯状态;基于电芯均衡温度和每一电芯的电芯状态,确定汽车是否需要进行电芯均衡;若汽车需要进行电芯均衡,利用每一电芯的电压,确定所有电芯中需要均衡的待均衡电芯;对所有待均衡电芯进行均衡。本方案中,在汽车处于启动状态下根据电芯均衡温度和电芯状态,确定汽车是否需要进行电芯均衡。若需要,确定需要均衡的待均衡电芯,并对待均衡电芯进行均衡,避免汽车在熄火后电池管理系统多次自唤醒造成的电池欠压,保障汽车正常启动和提高汽车使用体验。


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    Titel :

    Battery cell equalization method and battery management system


    Weitere Titelangaben:

    一种电芯均衡方法及电池管理系统


    Beteiligte:
    WU JUN (Autor:in)

    Erscheinungsdatum :

    2021-03-19


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    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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