Thermal modeling of passive thermal management system with phase change material for LiFePO4 battery

Author

Cao Jianhua ; Gao Dawei ; Liu Jiexun ; Wei Jieyuan ; Lu Qingchun

Author_Institution

Dept. of Automotive Eng., Tsinghua Univ., Beijing, China

fYear

2012

fDate

9-12 Oct. 2012

Firstpage

436

Lastpage

440

Abstract

The temperature of lithium-ion batteries in EVs must be maintained in a proper range for safety using and optimum performance. To solve the thermal problem of LiFePO4 battery, a passive thermal management system with phase change material (PCM) is discussed. D.C. resistance of the cell is measured by voltammetry method based on HPPC test, and the results can be used to calculate the heat generation rate. Paraffin is used as phase change material in this passive thermal management system. Thermal model of the system is established by finite element analysis (FEA) software, and the result is validated with experimental data. Compared to nature convection and forced air cooling, the maximum temperature of the cell decreases a little after using paraffin as phase change material.

Keywords

finite element analysis; iron compounds; lithium compounds; phase change materials; secondary cells; thermal management (packaging); voltammetry (chemical analysis); DC resistance; FEA software; HPPC testing; LiFePO₄; PCM; finite element analysis software; forced air cooling; heat generation rate calculation; nature convection; paraffin; passive thermal management system; phase change material; thermal modeling; voltammetry method; Batteries; Battery charge measurement; Force measurement; Materials; Particle separators; Phase measurement; System-on-a-chip; D.C. resistance; LiFePO4 battery; phase change material; thermal management; thermal model;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicle Power and Propulsion Conference (VPPC), 2012 IEEE

Conference_Location

Seoul

Print_ISBN

978-1-4673-0953-0

Type

conf

DOI

10.1109/VPPC.2012.6422582

Filename

6422582