Balancing Control Strategy for Li-Ion Batteries String Based on Dynamic Balanced Point

Dong-Hua Zhang, Guo-Rong Zhu, Shao-Jia He, Shi Qiu, Yan Ma, Qin-Mu Wu and Wei Chen
Additional contact information
Dong-Hua Zhang: School of Information Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan 430070, China
Guo-Rong Zhu: School of Automation, Wuhan University of Technology, Luoshi Road 122, Wuhan 430070, China
Shao-Jia He: School of Automation, Wuhan University of Technology, Luoshi Road 122, Wuhan 430070, China
Shi Qiu: School of Automation, Wuhan University of Technology, Luoshi Road 122, Wuhan 430070, China
Yan Ma: Wuhan Zhongyuan Electronic Information Company, Luoyu East Road 6, Wuhan 430074, China
Qin-Mu Wu: The Electrical Engineering College, Guizhou University, Huaxi, Guiyang 550025, China
Wei Chen: School of Automation, Wuhan University of Technology, Luoshi Road 122, Wuhan 430070, China

Energies, 2015, vol. 8, issue 3, 1-18

Abstract: The Li-ion battery is becoming the optimal choice for the Electric Vehicle’s (EV) power supply. In order to protect the Li-ion battery from charging damage and to prolong the battery’s life, a special control strategy based on the dynamic balanced point along with a non-dissipative equalizer is presented. The main focus of the proposed control strategy is to insure that the individual cell of a battery pack will be rapidly, efficiently and simultaneously balanced, by adjusting equalizing current of each cell dynamically. In this paper, a model of a four series connected Li-ion batteries pack has been established to evaluate the proposed control strategy. Superior performance is demonstrated by the simulation and experiment.

Keywords: EV; Li-ion battery; dynamic balanced point; control strategy; non-dissipative equalizer; series connected batteries (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2015
References: View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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