Study on lifetime and reliability for power battery pack based on single battery failure  

作　　者：王震坡 Liu Peng Chen Wei 

机构地区：[1]School of Mechanical and Vehicular Engineering, Beijing Institute of Technology, Beijing 100081, P.R. China [2]School of Management and Economies, Beijing Institute of Technology, Beijing 100081, P.R. China

出　　处：《High Technology Letters》2010年第1期18-22,共5页高技术通讯（英文版）

摘　　要：Single battery failure will change other batteries＇ load in a power battery pack. Based on the cumulative failure probability equality principle, this paper considers the relationship between the load and the battery life distribution, and constructs a reliability model for the parallel subsystem of the battery pack when a single battery fails, and then compares the lifetime and reliability as a function of load and cell design. The result proves that the k-out-of-n system approaches closed to the parallel subsystem of the power battery pack.

关 键 词：LIFETIME RELIABILITY BATTERY electric vehicle FAILURE 

分 类 号：TM911[电气工程—电力电子与电力传动] TN607[电子电信—电路与系统]