A novel model of the initial state of charge estimation for LiFePO4 batteries

doi:10.1016/j.jpowsour.2013.09.135

GIEC OpenIR > 中国科学院广州能源研究所

	A novel model of the initial state of charge estimation for LiFePO4 batteries
	Zhang, Yanhui 1,2; Song, Wenji1 ; Lin, Shili 1; Feng, Ziping1
	2014-02-15
发表期刊	JOURNAL OF POWER SOURCES
卷号	248 页码:1028-1033
摘要	The State-of-Charge (SOC) is an important performance parameter and evaluation index in rechargeable battery energy storage systems. Here, a novel smart estimation method based on coulomb counting is proposed in order to enhance estimation accuracy. Firstly, an enhanced model for the initial SOC (SOC0) estimation based on dynamic multi-parameter method is investigated, because SOC0 plays a key role in calculating real SOC in-time. All the design limits, such as voltage, temperature, are used as its constraints. And more importantly, the relaxation effect also is considered. The SOC0 with the main parameters satisfies Gauss function. Secondly, the quantitative relations of the energy efficiencies are measured and analyzed under the moderate discharging situation. The results show a negative quadratic correlation between energy efficiency and rate, and exhibit a reduction in energy efficiency as rate increases. Lastly, a test with several consecutive hybrid pulse power characteristic test profiles is carried. The experimental results indicate that the correction of SOC0 can efficiently limit the error below 4%, and also exhibit that considering on the effect of energy efficiency can further reduce its estimation error. (C) 2013 Elsevier B.V. All rights reserved.
文章类型	Article
关键词	Battery Energy Efficiency State Of Charge Hybrid Power Generation System
WOS标题词	Science & Technology ; Physical Sciences ; Technology
DOI	10.1016/j.jpowsour.2013.09.135
研究领域[WOS]	Electrochemistry ; Energy & Fuels
关键词[WOS]	LITHIUM-ION BATTERIES ; ELECTRIC VEHICLES ; OF-CHARGE ; MANAGEMENT
收录类别	SCI
语种	英语
WOS类目	Electrochemistry ; Energy & Fuels
WOS记录号	WOS:000330551000129
引用统计	被引频次：96[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/10676
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, Peoples R China 2.Univ Chinese Acad Sci, Beijing 10049, Peoples R China
第一作者单位	中国科学院广州能源研究所
推荐引用方式 GB/T 7714	Zhang, Yanhui,Song, Wenji,Lin, Shili,et al. A novel model of the initial state of charge estimation for LiFePO4 batteries[J]. JOURNAL OF POWER SOURCES,2014,248:1028-1033.
APA	Zhang, Yanhui,Song, Wenji,Lin, Shili,&Feng, Ziping.(2014).A novel model of the initial state of charge estimation for LiFePO4 batteries.JOURNAL OF POWER SOURCES,248,1028-1033.
MLA	Zhang, Yanhui,et al."A novel model of the initial state of charge estimation for LiFePO4 batteries".JOURNAL OF POWER SOURCES 248(2014):1028-1033.