动力锂离子电池撞击过程中热稳定性研究  

Research on the thermal stability of power Li-ion batteries during impact test

作　　者：王宏伟[1] 刘军[2] 邓爽[3] 肖海清[1] 杜晓莉[3] 王超[1] 杨宗辉[3] 

机构地区：[1]中国检验检疫科学研究院工业品检验研究所,北京100123 [2]北京石油化工工程有限公司,北京710075 [3]中认英泰(江苏)检测技术有限公司,江苏苏州215104

出　　处：《电池工业》2012年第2期81-84,共4页Chinese Battery Industry

基　　金：中国检验检疫科学研究院资助项目(2011JK009);江苏省自然科学基金项目(BK2009132)

摘　　要：针对动力电池在使用过程中所遇到的最危险的汽车事故(汽车碰撞)进行了模拟,即模拟了电池的内部短路,以便获得在汽车碰撞过程中,影响动力锂离子电池热稳性的主要因素。实验结果表明,电池荷电状态、充电电压(或开路电压、放电电压)越高,电池的热稳定性越差;环境温度越高,电池的热稳定性越差;电池的容量越高,电池的热稳定性越差;电池长宽面受到撞击时的热稳定性比电池长高面受到撞击时的热稳定性差;同时电池表面的杂物或是杂质也会降低电池的热稳定性。The relative factors of the battery thermal stability were obtained during the impact tests which simulated the most dangerous vehicle accident(vehicle crash).The results showed that the higher the battery state of charge,charging voltage(or discharge voltage,open-circuit voltage)environment temperature and the battery capacity was,the worse the battery thermal stability was,the thermal stability when length and width of the battery surface was impacted was worse than that of length and height of the battery surface under impacting,and the impurities and debris on the battery surface would reduce the battery thermal stability.

关 键 词：锂离子电池 撞击试验 热稳定性 

分 类 号：TM912[电气工程—电力电子与电力传动]