The invention relates to a self-discharge detection method and device of a battery, a battery controller and a storage medium. The method comprises the following steps: after a system is powered on and when it is determined that the current power failure duration of the system is greater than a preset duration, obtaining the self-discharge rate of each single battery in the battery in the currentpower failure period; according to the self-discharge rate of each single battery, selecting the single batteries meeting a preset screening condition as target single batteries; and when the self-discharge rate of any target battery cell is greater than or equal to a first preset threshold and less than a second preset threshold and each group of feature data currently stored in the system contains an identifier of the target single batteries, determining that the battery has an excessive self-discharge fault, and outputting alarm information. According to the method, self-discharge detectionof the battery can be completed without current detection equipment with relatively high detection precision, so that the self-discharge detection mode of the battery is simplified, and the accuracyof a detection result is improved.

    本申请涉及一种电池的自放电检测方法、装置、电池控制器和存储介质。该方法包括:在系统上电后且确定所述系统的本次掉电时长大于预设时长时,获取所述电池内的各个电池单体在本次掉电期间内的自放电率;根据各个电池单体的自放电率,选取符合预设筛选条件的电池单体作为目标电池单体;当任意一个目标电池单体的自放电率大于或等于第一预设阈值且小于第二预设阈值,且所述系统当前存储的每组特征数据中均含有所述目标电池单体的标识时,确定所述电池存在自放电过大故障并输出报警信息。该方法并不需要检测精度较高的电流检测设备即可完成对电池的自放电检测,从而简化了电池的自放电检测方式,且提高了检测结果的准确性。


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    Title :

    Self-discharge detection method and device of battery, battery controller and storage medium


    Additional title:

    电池的自放电检测方法、装置、电池控制器和存储介质


    Contributors:
    DONG YU (author) / ZHU QINGLIN (author) / LI QIUYING (author) / GAO JIEPENG (author) / LIU JIAHUI (author) / ZHANG BINGBING (author) / LI CHUNJIE (author)

    Publication date :

    2020-07-03


    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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