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http://dx.doi.org/10.5855/ENERGY.2011.20.1.001

Modeling of the Thermal Behavior of a Lithium-Ion Battery Pack  

Yi, Jae-Shin (Dept. of Chemical Engineering and Division of Energy Systems Research, Ajou University)
Publication Information
Journal of Energy Engineering / v.20, no.1, 2011 , pp. 1-7 More about this Journal
Abstract
The performance and life-cycle costs of electric vehicle(EV) and hybrid electric vehicle(HEV) depend inherently on battery packs. Temperature uniformity in a pack is an important factor for obtaining optimum performance for an EV or HEV battery pack, because uneven temperature distribution in a pack leads to electrically unbalanced battery cells and reduced pack performance. In this work, a three-dimensional modeling was carried out to investigate the effects of operating conditions on the thermal behavior of a lithium-ion battery pack for an EV or HEV application. Thermal conductivities of various compartments of the battery were estimated based on the equivalent network of parallel/series thermal resistances of battery components. Heat generation rate in a cell was calculated using the modeling results of the potential and current density distributions of a battery cell.
Keywords
Hybrid electric vehicle; Electric vehicle; Lithuim-ion battery pack; Thermal modeling;
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