Research on Optimal Charging of Power Lithium-Ion Batteries in Wide Temperature Range Based on Variable Weighting Factors

Boshi Wang, Haitao Min, Weiyi Sun and Yuanbin Yu
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Boshi Wang: State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China
Haitao Min: State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China
Weiyi Sun: State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China
Yuanbin Yu: State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China

Energies, 2021, vol. 14, issue 6, 1-21

Abstract: With the popularity of electric vehicles (EV), the charging technology has become one of the bottleneck problems that limit the large-scale deployment of EVs. In this paper, a charging method using multi-stage constant current based on SOC (MCCS) is proposed, and then the charging time, charging capacity and temperature increase of the battery are optimized by multi-objective particle swarm optimization (MOPSO) algorithm. The influence of the number of charging stages, the cut-off voltage, the combination of different target weight factors and the ambient temperature on the charging strategy is further compared and discussed. Finally, according to the ambient temperature and users’ requirements of charging time, a charging strategy suitable for the specific situation is obtained by adjusting the weight factors, and the results are analyzed and justified on the basis of the experiments. The results show that the proposed strategy can intelligently make more reasonable adjustments according to the ambient temperature on the basis of meeting the charging demands of users.

Keywords: electric vehicles; multi-objective charging; lithium-ion battery; variable weight factor; PSO algorithm; ambient temperature (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: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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