The invention relates to the technical field of power batteries, in particular to a safety early warning method and device for a power battery, a vehicle and a storage medium. The method comprises the following steps: generating a first target temperature parameter proportion by using a first target highest temperature value, a first target charging temperature difference value and a first target temperature rise value of a power battery of a target vehicle in a historical charging state; and determining a target risk level of the target vehicle by using a first boxplot, a second boxplot and a third boxplot corresponding to a second target highest temperature value, a second target charging temperature difference value and a second target temperature rise value of all vehicles in a historical charging state in an area of the target vehicle to a first target temperature parameter, therefore, a power battery safety early warning signal is generated. Therefore, the problem that the reliability of safety early warning of the power battery is reduced due to the fact that the upper limit and the lower limit of the temperature are determined only depending on the environment temperature and the fixed rule and the real temperature performance of the vehicle under different use conditions cannot be reflected in time in the prior art is solved.

    本申请涉及动力电池技术领域,特别涉及一种动力电池的安全预警方法、装置、车辆及存储介质,方法包括:利用目标车辆的动力电池在历史充电状态下的第一目标最高温度值、第一目标充电温差值和第一目标温升值生成第一目标温度参数占比;利用目标车辆的所处区域中所有车辆在历史充电状态下的第二目标最高温度值、第二目标充电温差值和第二目标温升值所对应的第一箱线图、第二箱线图和第三箱线图与第一目标温度参数占比,确定目标车辆的目标风险等级,从而生成动力电池安全预警信号。由此,解决相关技术中仅依赖于环境温度和固定规则来确定温度上限和下限,无法及时反映车辆在不同使用条件下的真实温度表现,降低动力电池安全预警的可靠性的问题。


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    Titel :

    Safety early warning method and device for power battery, vehicle and storage medium


    Weitere Titelangaben:

    动力电池的安全预警方法、装置、车辆及存储介质


    Beteiligte:
    MU BAO (Autor:in) / GENG ZHAOJIE (Autor:in) / WANG KANGKANG (Autor:in) / LI QING (Autor:in) / ZHANG SHOUQIN (Autor:in) / YUAN WENJING (Autor:in) / HUANG RONG (Autor:in)

    Erscheinungsdatum :

    11.04.2025


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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