基于AIC准则判断锂电池最优模型  

Evaluating Optimal Models of Lithium Battery Based on AIC

作　　者：李国春[1,2] 王恩龙 王丽梅[1,2] 盘朝奉[1,2] LI Guochun;WANG Enlong;WANG Limei;PAN Chaofeng(School of Automotive and Traffic Engineering,Jiangsu University,Zhenjiang 212013,Jiangsu,China;Automotive Engineering Research Institute,Jiangsu University,Zhenjiang 212013,Jiangsu,China)

机构地区：[1]江苏大学汽车与交通工程学院,江苏镇江212013 [2]江苏大学汽车工程研究院,江苏镇江212013

出　　处：《汽车工程学报》2019年第5期352-358,379,共8页Chinese Journal of Automotive Engineering

基　　金：国家重点研发计划“新能源汽车”重点专项(2018YFB0104400)

摘　　要：采用锂离子电池的等效电路模型,利用Matlab的Simulink模块搭建电池离线仿真模型,选用含有遗忘因子的递推最小二乘法进行在线参数辨识,基于赤池信息量准则(Akaike’s Information Criterion,AIC)建立锂离子电池模型结构复杂度和预测精度综合性能函数,对电池不同RC阶次模型进行研究。通过离线和在线参数的建模方法对不同RC阶次的等效电路模型进行AIC分析,结果表明,一阶RC等效电路模型最适合锂离子动力电池精确建模。Along with the development of electric vehicles,the research of the battery management system(BMS) has been paid more attention to. The accuracy and complexity of the battery model can directly affect the decision and control of the battery management system,and therefore establishing a suitable lithiumion battery model is critical to the performance of BMS. Using the equivalent circuit models of lithium-ion battery,the offline simulation model was established in Simulink/Matlab. The online parameter identification was carried out using the forgetting factor recursive least-squares. The comprehensive performance function considering both structural complexity and prediction accuracy was formed according to Akaike’s Information Criterion(AIC) to study different RC models of battery. Based on the offline and online parameters,it is shown that the first-order RC equivalent circuit model is most suitable for lithium-ion battery modeling.

关 键 词：电池模型 等效电路模型 赤池信息量准则 综合性能函数 

分 类 号：TM912[电气工程—电力电子与电力传动]