航空锂离子电池组不一致性分析  

Analysis of inconsistency of aviation lithium-ion battery pack

作　　者：裴世杰 王顺利[1] 向俊[1] 陈明洁 

机构地区：[1]西南科技大学信息工程学院,四川绵阳621010

出　　处：《蓄电池》2017年第5期206-210,245,共6页Chinese LABAT Man

基　　金：四川省科技厅重点研发项目"新能源汽车用锂电池组核心检测技术设备及标准研究"(2017FZ0013);四川省教育厅科研项"航空锂电池组SOC估算及BMS管理关键技术研究"(17ZB0453)

摘　　要：针对航空锂电池成组后普遍存在的不一致现象,以7ICP45航空锂离子电池组为研究对象,以搁置时间和不同充放电倍率对锂电池组不一致性造成的影响为研究点,分析、总结电池组不一致现象的表现规律。结果表明:搁置状态下,前3 d单体间电压不一致性表现明显,7 d后单体电压几乎不再变化,趋于稳定;充放电状态下,电池组不一致现象会随充放电倍率和时间的增加而变大,特别是在充放电后期;工况下电池组受多种因素的影响,短时间内就会有严重的不一致现象。Considering the universality of the monomer inconsistency in the aviation lithium batteries, the influences of standing time and charge-discharge rate on the inconsistency of 7ICP45 aviation lithium-ion batteries are analyzed. The results show that when the battery is in abeyance the voltage difference between the monomers in the first three days is obvious, but after one week the monomer voltage is almost no change and tends to be stable. In the charging and discharging state, the inconsistency of the battery will increase with the increase of charge-discharge rate and time, especially in the later stage. In the working condition, the battery pack is affected by many factors, and there will be serious inconsistency in a short time.

关 键 词：航空 锂电池 荷电状态 不一致性 电压 搁置时间 充放电倍率 

分 类 号：TM912.9[电气工程—电力电子与电力传动]