The invention relates to the technical field of battery cells, in particular to a vehicle-end battery cell lithium precipitation risk judgment method and device, equipment, a storage medium and a product. The method comprises the steps of determining a current pulse charging and discharging working condition according to a pulse charging and discharging request; then, acquiring an SOC data set and a voltage data set of the vehicle end battery cell under the current pulse charging and discharging working condition; if the SOC data in the lithium precipitation risk SOC interval exists in the SOC data set, acquiring voltage data corresponding to the SOC data; and if the voltage data exceeds the lithium precipitation risk boundary voltage, determining that the vehicle-end cell has a high lithium precipitation risk. According to the method, the SOC and voltage data are acquired in real time, a comprehensive and accurate data basis is provided, the analysis pertinence is improved by identifying the data in the lithium precipitation risk SOC interval, the high lithium precipitation risk is accurately judged by comparing the actual voltage data with the risk boundary voltage, and the accuracy of vehicle end cell lithium precipitation risk judgment is improved.

    本申请涉及电芯技术领域,尤其涉及一种车端电芯的析锂风险判断方法、装置、设备、存储介质及产品。该方法先根据脉冲充放电请求,确定当前脉冲充放电工况;然后获取车端电芯在当前脉冲充放电工况下的SOC数据集与电压数据集;若SOC数据集中存在析锂风险SOC区间内的SOC数据,再获取SOC数据对应的电压数据;若电压数据超出析锂风险边界电压,判定车端电芯存在高析锂风险。该方法通过实时获取SOC和电压数据,提供全面、准确的数据基础,通过识别析锂风险SOC区间内的数据,提高分析的针对性,通过对比实际电压数据和风险边界电压,精准判定高析锂风险,提高了车端电芯析锂风险判定的精准度。


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    Title :

    Method, device and equipment for judging lithium precipitation risk of vehicle-end battery cell, storage medium and product


    Additional title:

    车端电芯的析锂风险判断方法、装置、设备、存储介质及产品


    Contributors:
    LI MENGXIA (author) / WU JIEYU (author) / FENG CHUN (author) / LIU SHUANG (author) / WU SHENGJIE (author)

    Publication date :

    2024-10-25


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung



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