The invention provides a battery thermal runaway parameter determination method and device, electronic equipment, a storage medium and a product. The method comprises the following steps: acquiring an electrochemical model and simulation impedance of a first battery; according to the electrochemical model and the simulated impedance, obtaining the relationship between the simulated impedance at the first site in the first battery and the self-discharge rate; acquiring the upper limit charging condition and the upper limit temperature of the first battery, and determining the upper limit impedance of the first battery at the upper limit temperature under the upper limit charging condition; and determining the upper limit self-discharge rate of the first battery according to the relationship between the upper limit impedance and the simulation impedance and the self-discharge rate. The method can simulate the upper limit self-discharge rate at the upper limit temperature at the first abnormal site in the first battery, fully reflects the trend of the thermal performance parameters of the first battery, enables the thermal performance parameters of the first battery to be quantified, and facilitates the detection of the thermal performance parameters of the first battery when the local temperature in the first battery reaches the upper limit temperature. Battery thermal runaway risk identification or early warning and the like are carried out in advance, and accurate monitoring of the first battery is realized.

    本申请提供的一种电池热失控参数的确定方法、装置、电子设备、存储介质及产品,方法包括:获取第一电池的电化学模型和模拟阻抗;根据电化学模型和模拟阻抗,得到第一电池内第一位点处的模拟阻抗与自放电率关系;获取第一电池的上限充电工况和上限温度,确定在上限充电工况下第一电池处于上限温度时的上限阻抗;根据上限阻抗和模拟阻抗与自放电率关系,确定第一电池的上限自放电率。能够模拟出第一电池中出现异常的第一位点处,在上限温度时上限自放电率,充分反映出第一电池的热性能参数的趋势走向,使第一电池的热性能参数定量化,便于在第一电池中局部温度达到上限温度时,进行提前的电池热失控风险识别或预警等,实现对第一电池的精准监控。


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    Title :

    Parameter determination method and device, electronic equipment, storage medium and product


    Additional title:

    参数的确定方法、装置、电子设备、存储介质及产品


    Contributors:

    Publication date :

    2024-06-21


    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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