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。
Lithium ion battery nondestructive lithium precipitation detection method and device, and computer equipment
锂离子电池无损析锂检测方法、装置及计算机设备
11.05.2021
Patent
Elektronische Ressource
Chinesisch
Battery lithium precipitation detection method and device and electronic equipment
Europäisches Patentamt | 2024
|Europäisches Patentamt | 2023
|Method, device, medium and system for detecting lithium precipitation of lithium battery and vehicle
Europäisches Patentamt | 2024
|Europäisches Patentamt | 2023
|Method, device and system for detecting lithium precipitation of battery
Europäisches Patentamt | 2023
|