Journal
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
Volume 147, Issue 8, Pages 2910-2922Publisher
ELECTROCHEMICAL SOC INC
DOI: 10.1149/1.1393625
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A general form of the thermal energy equation for a battery system is derived based on first principles using the volume-averaging technique. A thermal-electrochemical coupled modeling approach is presented to simultaneously predict battery electrochemical and thermal behaviors. This approach couples the thermal energy equation with the previous multiphase micro-macroscopic electrochemical model via the heat generation and temperature-dependent physicochemical properties. The thermal-electrochemical model is multidimensional and capable of predicting the average cell temperature as well as the temperature distribution inside a cell. Numerical simulations are performed on a Ni-MH battery to demonstrate the significance of thermal-electrochemical coupling and to investigate the effects of thermal environment on battery electrochemical and thermal behaviors under various charging conditions. (C) 2000 The Electrochemical Society. S0013-4651(00)02-015-2. All rights reserved.
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