磷酸铁锂锂离子电池SOC的电流脉冲探测  

Current pulse exploration to SOC of lithium iron phosphate Li-ion battery

作　　者：方奖奖[1] 朱建新[1] 

机构地区：[1]上海交通大学汽车电子技术研究所,上海200240

出　　处：《电池》2011年第5期268-271,共4页Battery Bimonthly

基　　金：国家863计划电动汽车重大专项资助项目(2008AA11A125)

摘　　要：在不同荷电状态(SOC)下,研究磷酸铁锂(LiFePO4)锂离子电池对充放电电流的响应程度,确定几组响应最强烈的电流。将电池组在实际装车运行中该电流下的脉冲数据与电池管理系统中的数据对照,作为辅助方法对当前计算的SOC进行校正,然后采取合适的策略对电池组均衡。试验证明,电池组的容量提高了10%以上。The response extent of lithium iron phosphate （LiFePO4） Li-ion battery to the charge-discharge current under different state of charge（SOC） was studied, some groups of current with the most intense response were determined. The pulse data of bat-teries in operation of practical loading at this current were compared with the data in battery management system, to correct calculated SOC at present as a auxiliary method, then to equilibrate the batteries with proper strategy. The test proved that the capacity of the batteries improved more than 10%.

关 键 词：磷酸铁锂(LiFePO4) 电流脉冲 荷电状态(SOC)校正 均衡 

分 类 号：TM912.9[电气工程—电力电子与电力传动]