Comparison and analysis of temperature distribution in pouch and cylindrical Li-ion battery by finite element thermal model

Author(s): Padej Pao-la-ora, Natthawut Somphongb
a bSchool of Electrical Engineering, Institute of Engineering, Suranaree University of Technology,
Nakhon Ratchasima 30000, Thailand
International Journal of Smart Grid and Clean Energy, vol. 9, no. 5, September 2020: pp. 915-923
ISSN: 2315-4462 (Print)
ISSN: 2373-3594 (Online)
Digital Object Identifier: 10.12720/sgce.9.5.915-923

Abstract: Li-ion battery is the most popular energy storage system for the propulsion of an electric vehicle since the Li-ion batteries are high energy storage device and high energy density. However, Li-ion battery performance is highly sensitive to the operational temperature. The aim of the present study was to comparison and analysis of temperature distribution between the pouch and cylindrical Li-ion battery. The solution in thermal equations to be solved by approximating in the form of the partial differential equations (PDE) by 3-D finite element method using that all the coded developed by MATLAB program and the mathematical model that is time dependent. The simulation results show that an increased discharge current rate from 1C to 5C results show temperature increased. An increase the surface area and the cross-section tab area under the same volume conditions. The simulation results in formation of temperature decreased caused heat generation decrease. Thus, the temperature distribution of the pouch Li-ion battery less than the cylindrical Li-ion battery.

Keywords: Li-ion battery, 3-D finite element method, thermal distribution, thermal model
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