电压熵值的锂离子电池组安装模式优化  

Lithium-Ion Battery Installation Mode Optimization Based on Voltage Entropy

作　　者：肖艳秋[1] 姚雷 翟洪飞 侯俊剑[1] XIAO Yan-qiu;YAO Lei;ZHAI Hong-fei;HOU Jun-jian(Mechanical and Electrical Engineering Institute Zhengzhou Univeristy of Light Industry,He’nan Zhengzhou 450002,China;State Key Laboratory of Mechanical Transmission Chongqing University,Chongqing 400044,China)

机构地区：[1]郑州轻工业学院机电工程学院,河南郑州450002 [2]重庆大学机械传动国家重点实验室,重庆400044

出　　处：《机械设计与制造》2018年第9期262-264,268,共4页Machinery Design & Manufacture

基　　金：河南省科技攻关项目(18A460035);河南省教育厅高等学校重点科研项目(18A460035)

摘　　要：提出一种利用电压熵值的锂离子动力电池组安装模式优化方法。通过分析单体电池在成组模型内部的连接模式,研究单体间发生虚接时内部阻值变化对电压的影响,提出依据电压香农熵值的故障预测方法。在此方法上,分别对电池组在整车上的安装方式进行不同力矩下的对比测试,得到不同模式下单体电池满足安全需求的最小预紧力矩要求,确定出最佳的电池组安装模式。研究表明,该方法可有效避免电池间连接故障的发生,节省75%的预紧力,提升系统的安全性和有效性。It proposes an optimized installation method for the lithium-ion power battery pack.A prediction method based on shannon entropy of voltage is verified by researching on the influence of the resistance change to the terminal voltage when the fault connection between the cells occurs in different connection modules.Based on this method,the different installation methods for the battery pack in electric vehicle are compared under variant torques,then the respective minimal torques are obtained for the connection between the single cells in different modes.So the best installation mode of battery pack is received,and the results show this method can effectively avoid the fault connection between the cells and save 75%of the pre-tightening force,which enhances the security and effectiveness of the system.

关 键 词：锂离子电池 虚接 香农熵 连接模式 安全性 

分 类 号：TH16[机械工程—机械制造及自动化] TM912[电气工程—电力电子与电力传动]