电源学报2024，Vol.22Issue(z1)：69-77,9.DOI:10.13234/j.issn.2095-2805.2024.S1.69
考虑石墨嵌锂平台的磷酸铁锂电池电化学参数辨识
Identification of Electrochemical Parameters of Lithium Iron Phosphate Battery Considering Lithium Insertion Plateau of Graphite
赵杨梅 1时玮 1张雪楠 1刘彤 1冯翔1
作者信息
- 1. 北京交通大学电气工程学院,北京 100044
- 折叠
摘要
Abstract
The voltage plateau of a lithium iron phosphate battery reflects the lithium insertion capacity of positive and negative electrodes of the battery.To improve the identification accuracy of electrochemical parameters,especially the accuracy of battery voltage plateau,the electrochemical parameters of the battery are identified through an improved single-particle model.At the same time,considering the characteristics of voltage plateau of graphite anode,an optimization objective function consisting of the relative error of battery voltage,relative error of voltage plateau,total time error and the time difference in voltage plateaus is formed,and each objective is weighted by the analytic hierarchy process.Finally,the electrochemical parameters are identified using the simulated annealing algorithm.The identification accuracy of electrochemical parameters after considering the voltage plateau of graphite anode is improved,and the voltage error during the voltage plateau period is obviously reduced.关键词
嵌锂平台/磷酸铁锂电池/电化学参数辨识Key words
Lithium insertion plateau/lithium iron phosphate battery/identification of electrochemical parameters分类
信息技术与安全科学引用本文复制引用
赵杨梅,时玮,张雪楠,刘彤,冯翔..考虑石墨嵌锂平台的磷酸铁锂电池电化学参数辨识[J].电源学报,2024,22(z1):69-77,9.
