Electrochemical-thermal model of lithium polymer batteries

A mathematical model has been developed to study heat transfer and thermal management of lithium polymer batteries. Temperature dependent parameters i ncluding the diffusion coefficient of lithium ions, ionic conductivity of l ithium ions, transference number of lithium ions, etc., have been added to a previously developed electrochemical model to more completely characteriz e the thermal behavior of the Lithium polymer system. In addition, experime ntal studies of the discharge behavior and heat generation rate of lithium polymer cells have been conducted. Comparisons between experimental and mat hematical results are presented. Finally different thermal management appro aches are discussed. (C) 2000 The Electrochemical Society. S0013-4651(98)11 -046-7. All rights reserved.