Multi-Objective Predictive Balancing Control of Battery Packs Based on Predictive Current

Wenbiao Li, Longyun Kang, Xiangwei Guo and Yuan Yao
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Wenbiao Li: New Energy Research Center, School of Electric Power, South China University of Technology, Guangzhou 510640, China
Longyun Kang: New Energy Research Center, School of Electric Power, South China University of Technology, Guangzhou 510640, China
Xiangwei Guo: New Energy Research Center, School of Electric Power, South China University of Technology, Guangzhou 510640, China
Yuan Yao: New Energy Research Center, School of Electric Power, South China University of Technology, Guangzhou 510640, China

Energies, 2016, vol. 9, issue 4, 1-12

Abstract: Various balancing topology and control methods have been proposed for the inconsistency problem of battery packs. However, these strategies only focus on a single objective, ignore the mutual interaction among various factors and are only based on the external performance of the battery pack inconsistency, such as voltage balancing and state of charge (SOC) balancing. To solve these problems, multi-objective predictive balancing control (MOPBC) based on predictive current is proposed in this paper, namely, in the driving process of an electric vehicle, using predictive control to predict the battery pack output current the next time. Based on this information, the impact of the battery pack temperature caused by the output current can be obtained. Then, the influence is added to the battery pack balancing control, which makes the present degradation, temperature, and SOC imbalance achieve balance automatically due to the change of the output current the next moment. According to MOPBC, the simulation model of the balancing circuit is built with four cells in Matlab/Simulink. The simulation results show that MOPBC is not only better than the other traditional balancing control strategies but also reduces the energy loss in the balancing process.

Keywords: predictive current; multi-objective balancing control; battery pack; voltage balancing; SOC balancing (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: 2016
References: View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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