电动汽车动力电池寿命衰减的影响因素分析  

Analysis of life decline influencing factors of electric vehicle power battery

作　　者：宗磊 朱峰 杜峰 王辰 ZONG Lei;ZHU Feng;DU Feng;WANG Chen(Beijing National New Energy Vehicle Technology Innovation Center Co.,Ltd.,Beijing 100174,China)

机构地区：[1]北京国家新能源汽车技术创新中心有限公司,北京100174

出　　处：《电源技术》2022年第12期1353-1356,共4页Chinese Journal of Power Sources

基　　金：国家重点研发计划项目(2020YFB1600601);国家自然科学基金青年基金项目(52007181)。

摘　　要：动力电池使用寿命一直是决定电动汽车动力特性、安全特性及梯次利用价值的关键参数。然而在实际使用过程中,动力电池使用寿命会受到制造工艺和服役环境中多种因素的影响,导致其衰减过程呈现非线性、耦合性和随机性等特征。基于动力电池的结构组成及汽车的驾驶习惯,从内部因素和外部因素两方面总结了导致动力电池寿命衰减的原因,可为今后的电池性能设计和寿命评估提供重要参考。The service life of power battery is a critical parameter of electric vehicle,which could determine the power performance,safety characteristic and battery echelon utilization.However,during the actual service process,the life of power battery will be affected by many influencing factors in manufacturing process and operation condition,resulting in a life decline process with nonlinearity,coupling and randomness.Based on the battery components and driving habits,this paper summarized both internal and external influencing factors of life decline of power battery,which could contribute to the battery performance design and life prediction in the future.

关 键 词：动力电池 寿命衰减 健康状态 可用容量 

分 类 号：TM912.9[电气工程—电力电子与电力传动]