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退役动力电池寿命预测与匹配检验
引用本文:周向阳,邹幽兰,赵光金,杨娟. 退役动力电池寿命预测与匹配检验[J]. 中国有色金属学会会刊, 2013, 23(10): 3040-3045. DOI: 10.1016/S1003-6326(13)62831-9
作者姓名:周向阳  邹幽兰  赵光金  杨娟
作者单位:1. 中南大学 冶金与环境学院,长沙,410083
2. 河南电网 电力研究院,郑州,450052
基金项目:Projects (51204209, 51274240) supported by the National Natural Science Foundation of China: Project (HNDLKJ[2012]001-1) supported by Henan Electric Power Science &Technology Supporting Program, China
摘    要:
研究商业用18650型锂离子电池(额定容量1150mA.h)的循环寿命衰减规律,利用外推法预测电池的剩余寿命。结果表明,锂离子电池容量保持率与循环寿命服从二次高斯函数关系,匹配检测和一系列的交流阻抗测试验证了所选择的模型的正确性以及精度(〉99%)。建立循环寿命模型有利于缩短电池寿命测试周期,降低预测成本。

关 键 词:退役动力电池  寿命预测模型  匹配检验  电化学阻抗谱  等效电路
收稿时间:2012-09-14

Cycle life prediction and match detection in retired electric vehicle batteries
Xiang-yang ZHOU,You-lan ZOU,Guang-jin ZHAO,Juan YANG. Cycle life prediction and match detection in retired electric vehicle batteries[J]. Transactions of Nonferrous Metals Society of China, 2013, 23(10): 3040-3045. DOI: 10.1016/S1003-6326(13)62831-9
Authors:Xiang-yang ZHOU  You-lan ZOU  Guang-jin ZHAO  Juan YANG
Affiliation:1. School of Metallurgy and Environment, Central South University, Changsha 410083, China; 2. Electric Power Research Institute, Henan Electric Power Corporation, Zhengzhou 450052, China Received 14 September 2012; accepted 21 January 2013)
Abstract:
The lifespan models of commercial 18650-type lithium ion batteries (nominal capacity of 1150 mA-h) were presented. The lifespan was extrapolated based on this model. The results indicate that the relationship of capacity retention and cycle number can be expressed by Gaussian function. The selecting function and optimal precision were verified through actual match detection and a range of alternating current impedance testing. The cycle life model with high precision (〉99%) is beneficial to shortening the orediction time and cutting the prediction cost.
Keywords:retired electric vehicle battery  life prediction model  match detection  electrochemical impedance spectroscopy  equivalent circuit
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