在机械滥用下对铁酸盐电池的热失控行为的实验分析和安全评估

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Zhixiong Chai¹, Junqiu Li², Ziming Liu¹

¹Beijing Institute of Technology, National Engineering Research Center of Electric Vehicles, Beijing, 100081, China.

Scientific reports

|April 15, 2024

概括

铁酸盐 (LFP) 电池的机械滥用可能会导致热失控. 这项研究量化了滥用条件,并开发了模型来预测电池安全边界和热失控风险.

科学领域:

材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.
电化学储能储能电化学储能

背景情况:

机械滥用对离子电池构成重大安全风险,可能导致内部短路和热失控.
铁酸盐 (LFP) 电池广泛使用,但在各种压力条件下需要进行彻底的安全评估.

研究的目的:

系统地研究经过机械滥用后LFP电池的热失控行为.
开发定量安全评估方法,并建立热失控风险的预测模型.

主要方法:

在各种机械滥用条件和充电状态 (SOC) 下对LFP电池进行实验研究.
在故障事件中监测力,电压和温度反应.
提取热失控行为的特征参数和滥用条件的量化.

主要成果:

特性参数有效地识别了内部短路 (ISC) 和热失控进展.
已建立的回归模型准确地描述了电池安全边界.
机械滥用参数与热失控特性之间的量化关系.

结论:

该研究为评估在机械应力下LFP电池安全性提供了强大的框架.
开发的模型提高了对热失控事件的理解和预测.
这些发现有助于改善离子电池应用的安全协议.

关键词:

内部短路内部短路离子电池是一种离子电池.机械滥用机械滥用机械滥用在回归模型中,回归模型是指回归模型.安全评估安全评估安全评估热 runaway 失控的热 runaway 失控的

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