Monitoring and early warning method of EV charging failure based on a battery model

被引：0
|
作者：
Zhang Y. [1 ]
Li B. [1 ]
Yan X. [2 ]
Wang L. [2 ]
Jiang L. [1 ]
Diao X. [1 ]
Li T. [1 ]
机构：
[1] Beijing Electric Vehicle Charging/Battery Swap Engineering and Technology Research Center, China Electric Power Research Institute Co., Ltd., Beijing
[2] North China Electric Power University (Baoding), Baoding
来源：
Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | 2021年 / 49卷 / 10期
关键词：
Battery model; CAN bus monitoring; Charging failure; Electric vehicle; Monitoring and early warning;
D O I：
10.19783/j.cnki.pspc.200684
中图分类号：
学科分类号：
摘要：
With the large-scale development of electric vehicles in China, fault monitoring and early warning of electric vehicles during the charging process have received attention. This paper proposes a method for monitoring and early warning of electric vehicle charging faults based on a battery model. Through online estimation of the state of charge of the power battery model and battery electromotive force, parameters such as battery state of charge, voltage, and temperature can be adjusted in real time to simulate the charging response of the power battery, and can simulate power batteries of different types, specifications, and parameters. During the charging process, CAN bus monitoring technology is used to receive and analyze the charging information of the charger and battery. The charging response information simulated by the battery model is compared with the battery charging state information, and the charging state information of the charger is compared with the battery charging demand information to determine whether the charging process is normal. When it is judged that there is an abnormal charging or fault, a fault early warning signal is sent in good time. This method can identify more than 10 types of fault, including the failure of the BMS function. The actual charging data is used to verify the feasibility of the fault monitoring method under normal and abnormal charging conditions. © 2021 Power System Protection and Control Press.
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页码：143 / 154
页数：11
相关论文
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