Online estimation of the state of charge of a lithium-ion battery based on the fusion model
Wang, Xiao-lan1,2,3; Jin, Hao-qing1,2,3; Liu, Xiang-yuan1,2,3
2020-09-01
发表期刊Gongcheng Kexue Xuebao/Chinese Journal of Engineering
ISSN20959389
卷号42期号:9页码:1200-1208
摘要In the context of the global response to environmental pollution and climate change, countries have begun to pay attention to energy system reform and economic development to ensure low carbon transition. Among them, the development of low carbon transportation has become an important aspect of green transportation system construction. The development of electric vehicle technology can effectively reduce energy consumption and environmental pollution. However, with the recent reports of new energy vehicle safety accidents at home and abroad, the safety of lithium-ion batteries has attracted increasing attention from the industry. To prevent overcharging and overdischarging from affecting battery life and safety during use, a complete battery management system is required to control and manage a lithium-ion battery. The state of charge (SOC) used to reflect the remaining capacity of a battery is one of the key parameters. Therefore, an accurate SOC value is of significance to the safety of lithium-ion battery use and the safety performance of new energy vehicles. The low online estimation accuracy of the SOC of lithium-ion batteries and the estimation accuracy of the equivalent circuit model method are inconsistent with the model complexity. This study improved the extended Kalman filtering (EKF) algorithm and established a SOC estimation error prediction model based on the extreme learning machine (ELM) algorithm, which used the operating voltage and current of the battery as input and the SOC estimation error of the equivalent circuit model method as the output. On the basis of the physical data fusion method and the error prediction model, the online estimation model of the lithium-ion battery SOC based on the equivalent circuit model method combined with the ELM was established. The simulation results showed that the improved EKF algorithm enhances the estimation precision of the algorithm. Moreover, the physical data fusion model reduces the estimation error introduced by voltage and current measurements, overcomes the contradiction between the estimation accuracy and complexity of the equivalent circuit model method, improves the estimation accuracy of the SOC, and meets the application requirement that the estimation error must be less than 5%. © 2020, Science Press. All right reserved.
关键词Accident prevention Accidents Carbon Charging (batteries) Circuit simulation Climate change Data fusion Electric automobiles Energy utilization Environmental technology Equivalent circuits Errors Extended Kalman filters Ions Lithium-ion batteries Machine learning Pollution control Predictive analytics Application requirements Environmental pollutions Equivalent circuit model Error prediction model Extended Kalman filtering Extreme learning machine Low carbon transportations Reduce energy consumption
DOI10.13374/j.issn2095-9389.2019.09.20.001
收录类别EI
语种中文
出版者Science Press
EI入藏号20204009259101
EI主题词Battery management systems
EI分类号443.1 Atmospheric Properties - 454 Environmental Engineering - 525.3 Energy Utilization - 662.1 Automobiles - 702.1.2 Secondary Batteries - 703.1.1 Electric Network Analysis - 723.2 Data Processing and Image Processing - 804 Chemical Products Generally - 914.1 Accidents and Accident Prevention
来源库Compendex
分类代码443.1 Atmospheric Properties - 454 Environmental Engineering - 525.3 Energy Utilization - 662.1 Automobiles - 702.1.2 Secondary Batteries - 703.1.1 Electric Network Analysis - 723.2 Data Processing and Image Processing - 804 Chemical Products Generally - 914.1 Accidents and Accident Prevention
引用统计
文献类型期刊论文
条目标识符https://ir.lut.edu.cn/handle/2XXMBERH/115096
专题电气工程与信息工程学院
作者单位1.College of Electrical and Information Engineering Lanzhou University of Technology, Lanzhou; 730050, China;
2.Key Laboratory of Gansu Advanced Control for Industrial Processes, Lanzhou University of Technology, Lanzhou; 730050, China;
3.National Demonstration Center for Experimental Electrical and Control Engineering Education, Lanzhou University of Technology, Lanzhou; 730050, China
第一作者单位兰州理工大学
第一作者的第一单位兰州理工大学
推荐引用方式
GB/T 7714
Wang, Xiao-lan,Jin, Hao-qing,Liu, Xiang-yuan. Online estimation of the state of charge of a lithium-ion battery based on the fusion model[J]. Gongcheng Kexue Xuebao/Chinese Journal of Engineering,2020,42(9):1200-1208.
APA Wang, Xiao-lan,Jin, Hao-qing,&Liu, Xiang-yuan.(2020).Online estimation of the state of charge of a lithium-ion battery based on the fusion model.Gongcheng Kexue Xuebao/Chinese Journal of Engineering,42(9),1200-1208.
MLA Wang, Xiao-lan,et al."Online estimation of the state of charge of a lithium-ion battery based on the fusion model".Gongcheng Kexue Xuebao/Chinese Journal of Engineering 42.9(2020):1200-1208.
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