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Multiparameters Model of the Initial SOC Considering the Relaxation Effect
Zhang, Yanhui1,2; Song, Wenji1; Lin, Shili1; Feng, Ziping1
2014-04-01
发表期刊ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷号2期号:4页码:599-605
摘要To improve the accuracy of the initial state-of-charge (SOCo) estimation, an enhanced SOC0 model-based ampere-hour (Ah) model of a LiFePO4 battery is presented for application in a battery energy storage system. It varies as a function of the open circuit voltage (OCV), rates, and relaxation effect. Here, the Thevenin equivalent circuit model is selected to model the LiFePO4 battery, and its mathematic equations are deduced to determine the inherent trade-off between the time constant and main parameter of the battery, which can address the dilemma of the conventional SOC0 method (OCV model) as the relaxation effect and how long the battery takes to reach a steady state. To illustrate advantages of the enhanced estimation model, a comparison analysis is performed on the enhanced model with the former model under the dynamic stress test. Furthermore, the experimental results indicate that the correction of SOC0 can significantly decrease the estimation error. The enhanced SOC0 model is expected to help determine operational parameters for batteries of variable power sources.
文章类型Article
关键词Battery Battery Models Initial State-of-charge (Soc0) State-of-charge (Soc)
WOS标题词Science & Technology ; Physical Sciences ; Technology
DOI10.1021/sc400430e
研究领域[WOS]Chemistry ; Engineering
关键词[WOS]STATE-OF-CHARGE ; OPEN-CIRCUIT VOLTAGE ; BATTERY MODEL ; ESTIMATOR ; DESIGN
收录类别SCI
语种英语
WOS类目Chemistry, Multidisciplinary ; Engineering, Chemical
WOS记录号WOS:000334092600008
引用统计
文献类型期刊论文
条目标识符http://ir.giec.ac.cn/handle/344007/10711
专题中国科学院广州能源研究所
作者单位1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China
2.Univ Chinese Acad Sci, Beijing 10049, Peoples R China
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Zhang, Yanhui,Song, Wenji,Lin, Shili,et al. Multiparameters Model of the Initial SOC Considering the Relaxation Effect[J]. ACS SUSTAINABLE CHEMISTRY & ENGINEERING,2014,2(4):599-605.
APA Zhang, Yanhui,Song, Wenji,Lin, Shili,&Feng, Ziping.(2014).Multiparameters Model of the Initial SOC Considering the Relaxation Effect.ACS SUSTAINABLE CHEMISTRY & ENGINEERING,2(4),599-605.
MLA Zhang, Yanhui,et al."Multiparameters Model of the Initial SOC Considering the Relaxation Effect".ACS SUSTAINABLE CHEMISTRY & ENGINEERING 2.4(2014):599-605.
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