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An Energy Efficiency Evaluation Research Based on Heat Generation Behavior of Lithium-Ion Battery
Zhang, Yanhui1,2; Song, Wenji2; Feng, Ziping2
2013
发表期刊JOURNAL OF THE ELECTROCHEMICAL SOCIETY
卷号160期号:11页码:A1927-A1930
摘要Energy efficiency across a range of state of charge (SOC) is an important performance parameter in variable Battery Energy Storage System (BESS). A novel method was proposed to evaluate the effect of heat generation with the parameters of resistance and entropy change on the energy efficiency. The energy efficiency was evaluated through measuring the resistance and entropy change during different DOD (depth of discharge). The internal resistance was determined by constant current discharge, followed by plots of V vs I at constant SOC, and found it exhibit a reduction as SOC increasing. In addition, the entropy change was measured by the temperature change of the open-circuit voltage. Energy efficiency results were obtained at constant charge input levels and different discharge rates under the different DOD. The result show that the energy efficiency has a decreasing trend with the increase of the depth of discharge, and the energy efficiency plateaus at 60% DOD. The energy efficiency is decreased from 88.8% to 87.3% under 1C discharge from 20% to 80% DOD. Furthermore, the lower the current rate, the higher the energy efficiency under the constant DOD. We isolate the effects of undercharge and underdischarge, and find the difference of energy efficiency under different current rate increases gradually with the increase of DOD. (C) 2013 The Electrochemical Society. All rights reserved.
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
DOI10.1149/2.021311jes
研究领域[WOS]Electrochemistry ; Materials Science
关键词[WOS]ENTROPY ; HYBRID
收录类别SCI
语种英语
WOS类目Electrochemistry ; Materials Science, Coatings & Films
WOS记录号WOS:000326905000001
引用统计
被引频次:9[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/344007/10067
专题中国科学院广州能源研究所
作者单位1.Univ Chinese Acad Sci, Beijing 10049, Peoples R China
2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy, Guangzhou 510640, Peoples R China
第一作者单位中国科学院广州能源研究所
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Zhang, Yanhui,Song, Wenji,Feng, Ziping. An Energy Efficiency Evaluation Research Based on Heat Generation Behavior of Lithium-Ion Battery[J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY,2013,160(11):A1927-A1930.
APA Zhang, Yanhui,Song, Wenji,&Feng, Ziping.(2013).An Energy Efficiency Evaluation Research Based on Heat Generation Behavior of Lithium-Ion Battery.JOURNAL OF THE ELECTROCHEMICAL SOCIETY,160(11),A1927-A1930.
MLA Zhang, Yanhui,et al."An Energy Efficiency Evaluation Research Based on Heat Generation Behavior of Lithium-Ion Battery".JOURNAL OF THE ELECTROCHEMICAL SOCIETY 160.11(2013):A1927-A1930.
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