动力锂离子电池系统外短路安全研究

Study on External Short Circuit Safety of Power Lithium Ion Battery System

随着电动汽车起火、爆炸事故的频发,电池安全问题受到密切的关注。外短路作为电池安全风险的重要部分,目前对它的研究较少。本文将通过文献调研,对外短路故障诊断的方法进行简要阐述,并根据现有的研究空白,基于获取准确的防护边界条件方法,提出了一种通过对电池系统进行层级划分,从而实现对电池系统熔断保护的递归分析方法。

With the frequent occurrence of electric vehicle fire and explosion accidents,the battery safety problem has been paid close attention.External short circuit,as an important part of battery safety risk,is seldom studied at present.In this paper,the methods of external short-circuit fault diagnosis are briefly described through literature investigation.According to the existing research gaps,based on the method of obtaining accurate protection boundary conditions,a recursive analysis method of battery system fuse protection is proposed by hierarchical division on the battery system.