3D thermal-electrochemical lithium-ion battery computational modeling

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Title: 3D thermal-electrochemical lithium-ion battery computational modeling
Author: Gerver, Rachel Ellen
Abstract: The thesis presents a modeling framework for simulating three dimensional effects in lithium -ion batteries . This is particularly important for understanding the performance of large scale batteries used under high power conditions such as in hybrid electric vehicle applications . While 1D approximations may be sufficient for the smaller scale batteries used in cell phones and laptops , they are severely limited when scaled up to larger batteries , where significant 3D gradients can develop in concentration , current , temperature , and voltage . Understanding these 3D effects is critical for designing lithium -ion batteries for improved safety and long term durability , as well as for conducting effective design optimization studies . The model couples an electrochemical battery model with a thermal model to understand how thermal effects will influence electrochemical behavior and to determine temperature distributions throughout the battery . Several modeling example results are presented including thermal influences on current distribution , design optimization of current collector thickness and current collector tab placement , and investigation of lithium plating risk in three dimensions .
URI: http : / /hdl .handle .net /2152 /ETD -UT -2009 -08 -373
Date: 2010-06-04

Citation

3D thermal-electrochemical lithium-ion battery computational modeling. Master's thesis, The University of Texas at Austin. Available electronically from http : / /hdl .handle .net /2152 /ETD -UT -2009 -08 -373 .

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