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Energies 2017, 10(5), 709; doi:10.3390/en10050709

Research on the Optimal Charging Strategy for Li-Ion Batteries Based on Multi-Objective Optimization

1
State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China
2
China First Automobile Work shop Group Corporation Research and Development Center, Changchun 130011, China
3
China First Automobile Work shop Bus and Coach Co., Ltd., Changchun 130033, China
*
Author to whom correspondence should be addressed.
Academic Editor: K.T. Chau
Received: 6 March 2017 / Revised: 21 April 2017 / Accepted: 12 May 2017 / Published: 17 May 2017
(This article belongs to the Collection Electric and Hybrid Vehicles Collection)
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Abstract

Charging performance affects the commercial application of electric vehicles (EVs) significantly. This paper presents an optimal charging strategy for Li-ion batteries based on the voltage-based multistage constant current (VMCC) charging strategy. In order to satisfy the different charging demands of the EV users for charging time, charged capacity and energy loss, the multi-objective particle swarm optimization (MOPSO) algorithm is employed and the influences of charging stage number, charging cut-off voltage and weight factors of different charging goals are analyzed. Comparison experiments of the proposed charging strategy and the traditional normal and fast charging strategies are carried out. The experimental results demonstrate that the traditional normal and fast charging strategies can only satisfy a small range of EV users’ charging demand well while the proposed charging strategy can satisfy the whole range of the charging demand well. The relative increase in charging performance of the proposed charging strategy can reach more than 80% when compared to the normal and fast charging dependently. View Full-Text
Keywords: EV charging; Li-ion batteries; multi-objective optimization; equivalent circuit model (ECM); MOPSO algorithm; multistage constant current charging EV charging; Li-ion batteries; multi-objective optimization; equivalent circuit model (ECM); MOPSO algorithm; multistage constant current charging
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MDPI and ACS Style

Min, H.; Sun, W.; Li, X.; Guo, D.; Yu, Y.; Zhu, T.; Zhao, Z. Research on the Optimal Charging Strategy for Li-Ion Batteries Based on Multi-Objective Optimization. Energies 2017, 10, 709.

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