The invention provides a power battery thermal runaway monitoring method and system and an electric vehicle, and the method comprises the steps: responding to the charging completion of a power battery or the power-off completion of electric equipment employing the power battery, enabling a first monitoring mode of a first preset duration through a battery management system, and collecting the first battery data of the power battery; in response to the condition that the first battery data meets the first preset condition, the battery management system enters a second monitoring mode of a second preset duration, the second monitoring mode is a periodic short-time awakening monitoring mode in the dormant state, and the second preset duration is smaller than the first preset duration. By means of the design, the battery can be monitored during the period that the thermal runaway probability of the power battery is the highest, problem tracing and vehicle background early warning are facilitated, after it is determined that thermal runaway does not occur, the battery management system enters the second monitoring mode, and energy consumption is reduced.

    本申请提供一种动力电池热失控监控方法、系统以及电动车辆,包括:响应于动力电池充电完成或采用动力电池的用电设备下电完成,电池管理系统开启第一预设时长的第一监控模式,并采集动力电池的第一电池数据;响应于第一电池数据满足第一预设条件,电池管理系统进入第二预设时长的第二监控模式,其中,第二监控模式为休眠状态下周期性短时唤醒监控模式,且第二预设时长小于第一预设时长。这样的设计能够在动力电池发生热失控概率最高的期间对电池进行监控,便于问题追溯以及车辆后台预警,且在确定不会发生热失控后,使得电池管理系统进入第二监控模式,减少能耗。


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    Title :

    Power battery thermal runaway monitoring method and system and electric vehicle


    Additional title:

    一种动力电池热失控监控方法、系统以及电动车辆


    Contributors:
    LUAN DAWEI (author) / QIU DONG (author) / LIU XI (author) / YANG LANSEN (author) / LI WEIPENG (author) / SUN YU (author)

    Publication date :

    2024-07-05


    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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