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Comparison of the cooling methods on LiFePO4 power battery for electrical vehicle

Published:2015-06-10 author:PENG Ying，HUANG Rui，YU Xiao-li，XV jian-qing Browse: 2807 Check PDF documents

Comparison of the cooling methods on LiFePO4 power battery

for electrical vehicle

PENG Ying，HUANG Rui，YU Xiao-li，XV jian-qing

（Institute of Power Machinery and Vehicular Engineering，Zhejiang University，Hangzhou 310027，China）

Abstract：Aiming at the problem that LiFePO4 battery in electrical vehicle has a shortened life and reduced security when working at

high temperature condition，in order to ensure its proper operating temperature range，a comparative study of battery cooling methods has

been carried out. A 3D-FSI model of battery and air flow has been established to master the temperature field undertypical discharge

status based on Fluent.Also a parallel ventilation formsimulation has been conducted to compare the cooling capacity of ambient wind

cooling、air condition wind cooling and heat transfer oil cooling methods using maximum temperature and temperature difference as

indicators. The results indicate that forced convection cooling methods are necessary，and athigh temperature，high speed ambient wind

and low speed colder air condition wind can meet the cooling demand；heat transfer oil cooling can significantly reduce the maximum

temperature and temperature differenceof the battery packat low speed，it is aneffective cooling method.

Key words：LiFePO4 battery；temperature field；cooling methods；Fluent

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