一种锂电池组无损均衡管理系统设计  

A Novel Scheme of Non-Dissipative Equalization Management System for Lithium Battery Pack

作　　者：许爽[1] 孙冬[2,3] 柳钦煌 

机构地区：[1]中州大学信息工程学院,郑州450044 [2]上海大学机电工程与自动化学院,上海200072 [3]郑州轻工业学院电气信息工程学院,郑州450002

出　　处：《电子器件》2014年第4期799-802,共4页Chinese Journal of Electron Devices

基　　金：国家863高技术基金项目(2011AA11A247)

摘　　要：针对动力锂电池组充放电过程中,各单体电池之间存在的不一致性,设计了超级电容与双向DC-DC变流器相结合的无损均衡管理系统。采用无迹卡尔曼滤波法估算锂电池的荷电状态,与通常采用的扩展卡尔曼滤波器进行了对比研究,经实验验证,本系统能够快速、高效地实现锂电池组的均衡控制,实现精确地锂电池SOC(State of Charge)估计,提高了动力锂电池组的可靠性和安全性。According to inequality of each single battery in charge and discharge process, a non-dissipative equalization system is introduced for the power lithium battery pack,which is comprised of super capacity and bidi-rectional DC-DC converter. Adopting unscented Kalman filter to estimate batteries state of charge, and a comparative study is introduced by using extended Kalman filter. Experiments show that this system can equalize the battery energy quickly and efficiently,achieve the accurate SOC（ State of Charge） estimation of battery,and improve the reliability and security of the lithium battery pack.

关 键 词：动力锂电池组 能量无损均衡 无迹卡尔曼滤波 扩展卡尔曼滤波 

分 类 号：TN710[电子电信—电路与系统]