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Article

Virtual Detection of Mechanically Induced Short Circuits in a Cylindrical Lithium-Ion Battery Cell Based on Finite Element Simulation

1
Virtual Vehicle Research GmbH, Inffeldgasse 21A, 8010 Graz, Austria
2
Kreisel Electric GmbH & Co. KG, Kreiselstraße 1, 4261 Rainbach im Mühlkreis, Austria
*
Author to whom correspondence should be addressed.
Academic Editor: Matthieu Dubarry
Batteries 2021, 7(4), 79; https://doi.org/10.3390/batteries7040079
Received: 22 August 2021 / Revised: 27 October 2021 / Accepted: 16 November 2021 / Published: 17 November 2021
Lithium-ion batteries (LIBs) are commonly used in today’s electric vehicles. Studying their behaviour under mechanical loading, including short circuits, is vital for vehicle safety. This paper covers three major topics, (1) a general literature review for the state-of-the-art of LIBs, (2) physical cell tests for model validation are performed, wherein the occurrence of short circuits is detected and (3) creating a finite element model (FEM) of an 18650 cylindrical LIB using the most recent testing and simulation techniques. A variety of short-circuit criteria based on stresses, strains and geometric parameters have been implemented in the simulation and compared to the test results. It will be demonstrated that a combination of two geometric criteria, in the radial and axial directions of the cell, is best suited for virtual short-circuit detection in the simulation. Finally, the short-circuit criteria are implemented in a post-processing tool that allows fast short-circuit analysis of cells of different loadings. In the future, this method of short-circuit detection will be used to analyse an assembly of several battery cells such as, for instance, an automotive or maritime battery pack. Furthermore, the developed method enables mechanical integration with respect to crash safety in vehicles. View Full-Text
Keywords: lithium-ion battery; plastic deformation; short circuit; vehicle safety; finite element simulation lithium-ion battery; plastic deformation; short circuit; vehicle safety; finite element simulation
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MDPI and ACS Style

Jantscher, K.; Breitfuß, C.; Miklau, M.; Ismail, K.; Dobusch, P. Virtual Detection of Mechanically Induced Short Circuits in a Cylindrical Lithium-Ion Battery Cell Based on Finite Element Simulation. Batteries 2021, 7, 79. https://doi.org/10.3390/batteries7040079

AMA Style

Jantscher K, Breitfuß C, Miklau M, Ismail K, Dobusch P. Virtual Detection of Mechanically Induced Short Circuits in a Cylindrical Lithium-Ion Battery Cell Based on Finite Element Simulation. Batteries. 2021; 7(4):79. https://doi.org/10.3390/batteries7040079

Chicago/Turabian Style

Jantscher, Klemens, Christoph Breitfuß, Martin Miklau, Khaled Ismail, and Peter Dobusch. 2021. "Virtual Detection of Mechanically Induced Short Circuits in a Cylindrical Lithium-Ion Battery Cell Based on Finite Element Simulation" Batteries 7, no. 4: 79. https://doi.org/10.3390/batteries7040079

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