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《Chinese Journal of Electron Devices》 2014-04
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A Novel Scheme of Non-Dissipative Equalization Management System for Lithium Battery Pack

XU Shuang;SUN Dong;LIU Qinhuang;Institute of Information Engineering,Zhongzhou University;School of Mechatronics Engineering and Automation,Shanghai University;College of Electric and Information Engineering,Zhengzhou University of Light Industry;  
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 bidirectional 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.
【Fund】: 国家863高技术基金项目(2011AA11A247)
【CateGory Index】: TM912
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