The invention relates to a lithium ion battery nondestructive lithium precipitation detection method and device, and computer equipment. The method comprises the following steps: firstly obtaining the terminal voltage and current of a target battery in real time in a discharging process after the charging of the target battery is completed; secondly, according to the terminal voltage and the current of the target battery, calculating the open-circuit voltage OCV and the discharge electric quantity Q of the target battery, and drawing a first change curve, wherein the first change curve is a discharge electric quantity Q-open-circuit voltage OCV curve; and finally, according to the shape of the first change curve, judging whether lithium precipitation occurs in the charging process of the target battery. Whether lithium precipitation occurs in the charging process of the target battery can be judged directly according to the shape of the discharge electric quantity Q-open circuit voltage OCV curve. According to the method, whether lithium precipitation occurs in the battery can be accurately judged, the application cost is low, and the battery is not damaged.

    本申请涉及一种锂离子电池无损析锂检测方法、装置及计算机设备,首先在目标电池充电结束后的放电过程中,实时获取所述目标电池的端电压和电流;其次根据所述目标电池的端电压和电流,计算所述目标电池的开路电压OCV和放电电量Q,绘制第一变化曲线,所述第一变化曲线为放电电量Q‑开路电压OCV曲线;最后根据所述第一变化曲线的形状,判断所述目标电池在充电过程中是否发生析锂。本申请可以直接根据放电电量Q‑开路电压OCV曲线形状,判断目标电池在充电过程中是否发生析锂。此种方法可以准确的判断电池内部是否发生析锂,应用成本低,且对电池无损伤。


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Lithium ion battery nondestructive lithium precipitation detection method and device, and computer equipment


    Weitere Titelangaben:

    锂离子电池无损析锂检测方法、装置及计算机设备


    Beteiligte:
    PAN YUE (Autor:in) / OUYANG MINGGAO (Autor:in) / LU LANGUANG (Autor:in) / HAN XUEBING (Autor:in) / FENG XUNING (Autor:in) / REN DONGSHENG (Autor:in) / WANG HEWU (Autor:in)

    Erscheinungsdatum :

    11.05.2021


    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



    Battery lithium precipitation detection method and device and electronic equipment

    ZHANG GUOXING / TONG JIAJUN / LEE KOK HOE et al. | Europäisches Patentamt | 2024

    Freier Zugriff

    Battery lithium precipitation detection method, battery management system and power utilization device

    CHEN YAN / WANG YUAN / GAO PANLONG et al. | Europäisches Patentamt | 2023

    Freier Zugriff


    Lithium precipitation detection method and device, battery assembly, vehicle and readable storage medium

    SHI LIURONG / ZHOU DEHUA / YUAN CHANGFU | Europäisches Patentamt | 2023

    Freier Zugriff

    Method, device and system for detecting lithium precipitation of battery

    LI ZHAN | Europäisches Patentamt | 2023

    Freier Zugriff