锂电池内部低温加热方法的研究  

Research on low temperature heating method of lithium battery

作　　者：李宁 谢贵文 李波 庞小龙 邹伟华 Li Ning;Xie Guiwen;Li Bo;Pang Xiaolong;Zou Weihua(Maintenance Company,State Grid Ningxia Electric Power Company,Yinchuan 750011,China;Coal Washing Preparation Center,Ningxia Coal Industry Corporation,National Energy Group,Shizuishan 753000,Ningxia,China)

机构地区：[1]国网宁夏电力有限公司检修公司,银川750011 [2]国家能源集团宁夏煤业公司洗选中心,宁夏石嘴山753000

出　　处：《电测与仪表》2023年第9期43-48,共6页Electrical Measurement & Instrumentation

基　　金：国家电网有限公司科技项目(JBS198528)。

摘　　要：针对锂电池在低温下充放电性能迅速恶化的问题,文中在分析电池等效电路模型和温升模型的基础上,通过低温放电产生的内阻热加热电池。以加热过程的时间和容量衰减为优化目标,采用动态规划算法求解目标函数。通过仿真分析,对该加热方法的有效性和灵活性进行验证。仿真结果表明,该加热方法具有一定的优越性,可以满足锂电池在低温环境下的使用要求。该研究为我国锂电池低温加热方法的发展提供了参考和借鉴。In view of the rapid deterioration of the charging and discharging performance of lithium battery at low temperature environment,based on the analysis of the equivalent circuit model and temperature rise model of the battery,the internal resistance thermal heating battery produced by low temperature discharge is introduced.Taking the time and capacity decay of the heating process as the optimization goal,a dynamic programming algorithm is used to solve the objective function.Through simulation analysis,the validity and flexibility of the heating method are verified.The simulation results show that the proposed heating method has certain advantages and can meet the requirements of lithium batteries in low temperature environments.This study provides a reference for the development of low temperature heating methods of lithium batteries in China.

关 键 词：低温环境 电池性能 动态规划算法 充放电性能 

分 类 号：TM91[电气工程—电力电子与电力传动]