The invention discloses an anti-overcharge control method and device of a battery system, a storage medium and an electric vehicle. The anti-overcharge control method of the battery system comprises the following steps: acquiring real-time internal resistances of a battery in different charge states and corresponding factory internal resistances of the battery in the same charge state; comparing the real-time internal resistance of the battery with the corresponding factory internal resistance of the battery in the same state of charge; and adopting different charging strategies for the battery according to different ratios of the real-time internal resistance of the battery to the factory internal resistance of the corresponding battery. According to the anti-overcharge control method of the battery system, the health state of the battery can be judged through the real-time internal resistance of the battery, and the corresponding charging strategy is matched according to the health state of the battery, so that the charging strategy is changed in time when the material structure of the battery is suddenly changed or has defects, the battery is prevented from being overcharged, thermal runaway caused by overcharge of the battery is avoided, and furthermore the charging safety of the battery is improved.

    本发明公开了一种电池系统的防过充控制方法、装置及存储介质和电动车。该电池系统的防过充控制方法包括:获取电池在不同荷电状态下的电池实时内阻以及相同荷电状态下对应的电池出厂内阻;将所述电池实时内阻与相同荷电状态下对应的所述电池出厂内阻作比较;根据所述电池实时内阻与对应的所述电池出厂内阻比值的不同,对所述电池采取不同的充电策略。根据本发明实施例的电池系统的防过充控制方法,可通过电池实时内阻判断电池的健康状态,并根据电池的健康状态匹配对应的充电策略,从而在电池材料结构突变或存在缺陷时,及时改变充电策略,从而有利于防止电池过充,以及电池过充引发的热失控,进而有利于提升电池的充电安全性。


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    Title :

    Anti-overcharge control method and device for battery system, storage medium and electric vehicle


    Additional title:

    电池系统的防过充控制方法、装置及存储介质和电动车


    Contributors:
    LI SEN (author) / OUYANG LIN (author) / KUANG FENGQI (author) / GAO LONG (author)

    Publication date :

    2021-07-20


    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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