Two-dimensional electrochemical-thermal coupled modeling of cylindrical LiFePO4 batteries

被引：135

作者：

Xu, Meng ^{[1
]}

Zhang, Zhuqian ^{[1
]}

Wang, Xia ^{[2
]}

Jia, Li ^{[1
]}

Yang, Lixin ^{[1
]}

机构：

[1] Beijing Jiaotong Univ, Sch Mech Elect & Control Engn, Inst Thermal Engn, Beijing 100044, Peoples R China

[2] Oakland Univ, Dept Mech Engn, Rochester, MI 48309 USA

来源：

JOURNAL OF POWER SOURCES | 2014年 / 256卷

基金：

中国国家自然科学基金;

关键词：

Lithium ion battery; Electrochemical-thermal coupled model; Current collecting tabs; Two-dimensional; LITHIUM/POLYMER BATTERY; DISCHARGE;

D O I：

10.1016/j.jpowsour.2014.01.070

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The distributions of potential and reaction rates in a lithium ion battery during discharge process have great influences on the battery thermal characteristics. A two-dimensional electrochemical-thermal model has been developed for a cylindrical LiFePO4 battery by coupling the mass, charge, and energy conservations as well as the cell electrochemical kinetics. The model also includes battery current collecting tabs. The modeling results are validated for both the electrochemical performance and thermal behavior during galvanostatic discharge process. The modeling results agree well with the experimental data. The placement of the positive and the negative current collecting tabs on the cylindrical battery was found to have a significant effect on the distributions of its potential and local reaction rates, which therefore affect heat generation rates, and thus the distribution of the temperature within the battery. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：233 / 243

页数：11

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