储能用锂离子电池修复系统  

Repair system for Li-ion battery used in energy storage

作　　者：吕杰[1] 宋文吉[1] 陈明彪[1] 冯自平[1] LYU Jie;SONG Wen-ji;CHEN Ming-biao;FENG Zi-ping(Guangzhou Institute of Energy Conversion,Chinese Academy of Sciences,CAS Key Laboratory of Renewable Energy,Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development,Guangzhou,Guangdong 510640,China)

机构地区：[1]中国科学院广州能源研究所,中科院可再生能源重点实验室,广东省新能源和可再生能源研究开发与应用重点实验室,广东广州510640

出　　处：《电池》2023年第3期308-311,共4页Battery Bimonthly

摘　　要：针对目前锂离子电池在线均衡模块数量多、成本高、体积大,以及均衡控制方法相对较单一,无法满足储能系统需求的问题,开发独立式锂离子电池修复系统。采用混合式修复拓扑,开发修复系统功能模块,提出修复控制策略。一次充电修复后,电池模组充电时间延长3.1%,充入容量提升0.78%,电池荷电状态(SOC)差值降低2.11%,说明独立式锂离子电池修复系统能够延长电池充放电时间,减小电池之间的差异,提高充放电能力。该系统有助于降低电池使用成本,使电池组小型化和轻量化。Aiming at the issues of large number of Li-ion battery online balancing modules,high cost,large volume and relatively simple balancing control methods,which couldn’t meet the needs of the energy storage system,a stand-alone Li-ion battery repair system was developed.Hybrid repair topology was adoped to develop repair system function modules and a repair control strategy was proposed.After a single charge repair,the charging time of the battery module was extended by 3.1%,the charging capacity was increased by 0.78%,the difference in state of charge(SOC)of the battery was reduced by 2.11%.It indicated that the stand-alone Li-ion battery repair system could prolong the charge-discharge time of batteries,reduce the differences among the batteries and improve charge-discharge capacity.The system was helpful for reducing battery cost,miniaturization and lightweight of battery pack.

关 键 词：锂离子电池 电池修复系统 电池状态监测与估算 修复控制 

分 类 号：TM912.9[电气工程—电力电子与电力传动]