Multi‑stage constant‑current charging method of electric vehicle considering user charging law

doi:10.19781/j.issn.1673-9140.2025.02.025

Home > Archive>Volume 40, Issue 2, 2025 >235-242. DOI:10.19781/j.issn.1673-9140.2025.02.025

Multi‑stage constant‑current charging method of electric vehicle considering user charging law
DOI:
                        10.19781/j.issn.1673-9140.2025.02.025
                    
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                        YANG Shuai1,2YANG Shuai
Power Supply Service Center (Metrology Center), State Grid Hunan Electric Power Co., Ltd., Changsha 410000, China; Hunan Province Key Laboratory of Intelligent Electrical Measurement and Application Technology, Changsha 410004, China
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LIU Xiaoping1,2LIU Xiaoping
Power Supply Service Center (Metrology Center), State Grid Hunan Electric Power Co., Ltd., Changsha 410000, China; Hunan Province Key Laboratory of Intelligent Electrical Measurement and Application Technology, Changsha 410004, China
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YU Minqi1,2YU Minqi
Power Supply Service Center (Metrology Center), State Grid Hunan Electric Power Co., Ltd., Changsha 410000, China; Hunan Province Key Laboratory of Intelligent Electrical Measurement and Application Technology, Changsha 410004, China
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DENG Hanjun1,2DENG Hanjun
Power Supply Service Center (Metrology Center), State Grid Hunan Electric Power Co., Ltd., Changsha 410000, China; Hunan Province Key Laboratory of Intelligent Electrical Measurement and Application Technology, Changsha 410004, China
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HUANG Rui1,2HUANG Rui
Power Supply Service Center (Metrology Center), State Grid Hunan Electric Power Co., Ltd., Changsha 410000, China; Hunan Province Key Laboratory of Intelligent Electrical Measurement and Application Technology, Changsha 410004, China
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LIU Mouhai1,2LIU Mouhai
Power Supply Service Center (Metrology Center), State Grid Hunan Electric Power Co., Ltd., Changsha 410000, China; Hunan Province Key Laboratory of Intelligent Electrical Measurement and Application Technology, Changsha 410004, China
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Affiliation:(1. Power Supply Service Center (Metrology Center), State Grid Hunan Electric Power Co., Ltd., Changsha 410000, China; 2. Hunan Province Key Laboratory of Intelligent Electrical Measurement and Application Technology, Changsha 410004, China)
Clc Number:TM912
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Abstract:

The rapid charging method of lithium-ion batteries for electric vehicles should also consider the influence of users’ behavior habits when considering the traditional goals such as balancing the safety, life, and charging time of the batteries. In this paper, a multi-stage constant-current charging method considering users’ behavior habits is proposed. First, Monte Carlo method is used to simulate users’ charging behaviors, and thus the state of charge (SOC) range of users’ optimal willingness to achieve is determined. Then, the dynamic equations of charging time and energy loss are established. Finally, the charging mode to obtain optimal charging current is determined by the particle swarm optimization algorithm. The results show that the proposed optimal charging strategy can reduce the maximum temperature rise of the batteries to a certain extent while improving the charging speed. It also significantly reduces charge loss, compared with the traditional constant-current and constant-voltage (CC-CV) charging method. The service life of lithium-ion batteries is indirectly improved by reducing energy loss during the charging process.

Key words:users’ optimal willingness; internal resistance function; charging time; charge loss

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杨帅,刘小平,余敏琪,邓汉钧,黄瑞,刘谋海.考虑用户充电规律的电动汽车多阶段恒流充电方法研究[J].电力科学与技术学报英文版,2025,40(2):235-242. YANG Shuai, LIU Xiaoping, YU Minqi, DENG Hanjun, HUANG Rui, LIU Mouhai. Multi‑stage constant‑current charging method of electric vehicle considering user charging law[J]. Journal of Electric Power Science and Technology,2025,40(2):235-242.

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Online: June 06,2025
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