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Relaxation effect analysis on the initial state of charge for LiNi0.5Co0.2Mn0.3O2/graphite battery
Zhang Yanhui1,2,3; Song Wenji2; Xu Guoqing1,3
2014-09-01
Source PublicationENERGY
Volume74Pages:368-373
AbstractA model, applicable to a range of the SOC0 (initial state of charge) with a strong interval discharge, is developed and studied based on the traditional OCV (open circuit voltage) model and as a function of parameters of OCV, resting time, current rate and the temperature. Firstly, an online estimation of its OCV is explored based on the LiNi(0.5)Co(0.2)Mb(0.3)O(2)/graphite battery's intrinsic relationship between the SOC and the OCV according to the experimental data. Then, an equivalent circuit model with two series RC networks is adopted modeling the polarization characteristic and the dynamic behavior of the LiNi0.5-Co0.2Mn0.3O2/graphiten battery, the corresponding dynamic electric behavior is built with equations. An resting time estimation method is put forward theoretically and is verified experimentally, where the resting time is updated with the real-time measurements of battery parameter of model at each sampling interval, in order to perfect overcome the drawback of OCV model for SOC0 estimate. What is more, the effect of multiple temperatures to terminal voltage are considered. It makes contributions to the existing literature. Finally, a verifying experiment is carried out based on DST (Dynamic Stress Test) to evaluate the performance and robustness of the proposed SOC0. (C) 2014 Elsevier Ltd. All rights reserved.
SubtypeArticle
KeywordBattery Battery Models Soc0 (Initial State Of Charge) Resting Time Soc (State Of Charge)
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1016/j.energy.2014.06.105
WOS Subject ExtendedThermodynamics ; Energy & Fuels
WOS KeywordOPEN-CIRCUIT-VOLTAGE ; ELECTRIC VEHICLES ; ADAPTIVE STATE ; OF-CHARGE ; ESTIMATOR
Indexed BySCI ; ISTP
Language英语
WOS SubjectThermodynamics ; Energy & Fuels
WOS IDWOS:000342862100041
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/10644
Collection中国科学院广州能源研究所
Affiliation1.Chinese Acad Sci, Shenzhen Inst Adv Technol, Shenzhen 518055, Peoples R China
2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China
3.Tongji Univ, Coll Elect & Informat Engn, Shanghai 201804, Peoples R China
Recommended Citation
GB/T 7714
Zhang Yanhui,Song Wenji,Xu Guoqing. Relaxation effect analysis on the initial state of charge for LiNi0.5Co0.2Mn0.3O2/graphite battery[J]. ENERGY,2014,74:368-373.
APA Zhang Yanhui,Song Wenji,&Xu Guoqing.(2014).Relaxation effect analysis on the initial state of charge for LiNi0.5Co0.2Mn0.3O2/graphite battery.ENERGY,74,368-373.
MLA Zhang Yanhui,et al."Relaxation effect analysis on the initial state of charge for LiNi0.5Co0.2Mn0.3O2/graphite battery".ENERGY 74(2014):368-373.
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