新能源车动力电池冲击波形特征数值研究  

Numerical research on characteristics of power battery impact wave of new energy vehicle

作　　者：朱海涛[1] 张向磊[1] 杨佳璘[1] 张斌 ZHU Haitao;ZHANG Xianglei;YANG Jianlin;ZHANG Bing(China Automotive Technology and Research Center Co., Ltd., Tianjin 300162, China)

机构地区：[1]中国汽车技术研究中心有限公司

出　　处：《汽车安全与节能学报》2019年第2期184-191,共8页Journal of Automotive Safety and Energy

基　　金：天津市科技支撑项目(编号15ZCZDGX00570)

摘　　要：为确定符合中国国情的新能源汽车动力电池碰撞测试条件,采集了实车碰撞试验动力电池机械冲击响应数据,获得典型的新能源汽车动力电池所受平均冲击强度曲线;运用等效梯形波和最小二乘法,对平均冲击强度曲线进行数学处理,得到冲击强度特征数值及容差,并与ISO12405-3测试条件进行了对标。结果表明:在冲击波形的上下限值和时间历程上,对于中国新能源车动力电池,应采用与ISO标准差异化的冲击波形进行测试,且针对不同碰撞形态使用完全独立波形进行试验。The mechanical impact response datum of the power batteries were collected and the average impact strength curves were obtained in the collision of new energy vehicles to determine the impact test conditions of power battery for new energy vehicles. The average impact strength curve was processed mathematically by means of equivalent trapezoidal wave and least square method. The characteristic value and tolerance of impact strength were obtained and the test conditions were compared with ISO 12405-3. The results show that independent waveforms corresponding to collision patterns should be used to test the power batteries for new energy vehicles in China, which was different from ISO standard in the upper and lower limit and time history of shock wave shape.

关 键 词：动力电池 安全标准 测试条件 机械冲击强度 最小二乘法 等效梯形波 冲击强度曲线 

分 类 号：TM911[电气工程—电力电子与电力传动]