Title :
Coupled thermal and impedance based spatially resolved electric model for fault analysis of lithium ion battery modules
Author :
Witzenhausen, H. ; Käbitz, Stefan ; Sauer, Dirk Uwe
Author_Institution :
Electrochem. Energy Conversion & Storage Syst. Group, RWTH Aachen Univ., Aachen, Germany
Abstract :
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.
Keywords :
electric impedance; fault diagnosis; secondary cells; thermal analysis; coupled model; fault analysis; impedance based spatially resolved electric model; lithium ion battery module; passive safety; thermal based spatially resolved electric model; three dimensional impedance based electric battery model; Batteries; Cooling; Equations; Heating; Mathematical model; System-on-a-chip; Temperature measurement;
Conference_Titel :
Electrical Systems for Aircraft, Railway and Ship Propulsion (ESARS), 2012
Conference_Location :
Bologna
Print_ISBN :
978-1-4673-1370-4
Electronic_ISBN :
2165-9400
DOI :
10.1109/ESARS.2012.6387500
