锂离子电池安全性测试分析

Analysis of the Lithium-ion Battery Safety Test

目前锂离子电池已经被作为主要的储能装置,广泛应用于纯电动汽车与混合动力汽车当中,但是越来越多的安全事故开始引起对于锂离子电池安全问题的思考。在使用过程中,由于一些不容易预测原因的出现导致锂离子电池发生热失控,引发电池的起火或爆炸。针对该问题,根据GB/T 31485—2015和GB/T 31467. 3—2015标准,重点介绍了容易发生热失控现象的几个试验。结合试验案例,分析了在安全试验中锂离子电池发生热失控的可能原因。

Lithium-ion batteries, one kind of the main energy storage devices nowadays, have been widely used in electric vehicles and hybrid electric vehicles. However, the increasing security incidents have raised the attention on the safety issue of lithium-ion batteries. Thermal runaway of lithium-ion battery caused by some unpredictable may lead to a fire or explosion. Several tests according to Chinese standard GB/T 31485—2015 and GB/T 31467.3—2015, in which thermal runaway is prone to occur are highlighted in the article. Combined with the test instances, possible causes of lithium-ion battery thermal runaway in safety tests have been analyzed.