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Coupled thermal and impedance based spatially resolved electric model for fault analysis of lithium ion battery modules

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3 Author(s)
Witzenhausen, H. ; Electrochem. Energy Conversion & Storage Syst. Group, RWTH Aachen Univ., Aachen, Germany ; Kabitz, S. ; Sauer, D.U.

In this work a three dimensional impedance-based electric battery model is coupled with a thermal model. Both parts are verified by comparing measurement and simulation. Subsequently the model is used to simulate a locally limited internal short-circuit inside a cell and inside a battery pack. Based on the simulations, suggestions for improvements of passive safety are made.

Published in:

Electrical Systems for Aircraft, Railway and Ship Propulsion (ESARS), 2012

Date of Conference:

16-18 Oct. 2012