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Thermal analyses of LiFePO4/graphite battery discharge processes
Jiang, Fangming; Peng, Peng; Sun, Yiqiong
2013-12-01
Source PublicationJOURNAL OF POWER SOURCES
Volume243Pages:181-194
AbstractAn electrochemical-thermal coupling model is developed to describe the LiFePO4/graphite battery discharge and charge processes. Various heat generations/consumptions including Joule heat, reversible entropy heat, contact resistance heat, irreversible electrochemical reaction heat, ionic migration heat, and convective heat release to the ambient during charge or discharge processes are calculated in detail. The developed model is first validated by experimental data. Then systematic and comprehensive thermal analyses with respect to various discharge processes are performed based on the simulated results. For the specific cell considered, the irreversible electrochemical reaction heat and contact resistance heat are found to be the two main heat generation sources; for discharge processes of higher C-rate, the contact resistance heat take more proportion of the total heat generation as it is directly proportional to the squared discharge current density; the ionic migration heat is a sink with magnitude being about 1/3 of the Joule heat. The reversible entropy heat changes its sign from a negative heat sink to a positive heat source during a discharge process and its changing magnitude may be comparable to the irreversible electrochemical reaction heat for all the discharge processes of different C-rates. (C) 2013 Published by Elsevier B.V.
SubtypeArticle
KeywordThermal Analyses Lithium Iron Phosphate Battery Electrochemical-thermal Model Discharge Process
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1016/j.jpowsour.2013.05.089
WOS Subject ExtendedElectrochemistry ; Energy & Fuels
WOS KeywordLITHIUM-ION BATTERY ; EXPERIMENTAL VALIDATION ; LITHIUM/POLYMER BATTERY ; INSERTION CELL ; MODEL ; LIFEPO4 ; ELECTRODE ; DYNAMICS ; BEHAVIOR
Indexed BySCI
Language英语
WOS SubjectElectrochemistry ; Energy & Fuels
WOS IDWOS:000324846200025
Citation statistics
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/9152
Collection中国科学院广州能源研究所
AffiliationChinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy, Lab Adv Energy Syst, Guangzhou 510640, Guangdong, Peoples R China
First Author AffilicationGuangZhou Institute of Energy Conversion,Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Jiang, Fangming,Peng, Peng,Sun, Yiqiong. Thermal analyses of LiFePO4/graphite battery discharge processes[J]. JOURNAL OF POWER SOURCES,2013,243:181-194.
APA Jiang, Fangming,Peng, Peng,&Sun, Yiqiong.(2013).Thermal analyses of LiFePO4/graphite battery discharge processes.JOURNAL OF POWER SOURCES,243,181-194.
MLA Jiang, Fangming,et al."Thermal analyses of LiFePO4/graphite battery discharge processes".JOURNAL OF POWER SOURCES 243(2013):181-194.
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