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Batteries 2018, 4(2), 16; https://doi.org/10.3390/batteries4020016

Fast Thermal Runaway Detection for Lithium-Ion Cells in Large Scale Traction Batteries

1
Deutsche ACCUMOTIVE GmbH & Co., KG, Neue Straße 95, 73230 Kirchheim u. Teck (Nabern), Germany
2
Electrical Energy Storage Systems, Institute for Photovoltaics, University of Stuttgart, Pfaffenwaldring 47, 70569 Stuttgart, Germany
*
Author to whom correspondence should be addressed.
Received: 23 February 2018 / Revised: 6 March 2018 / Accepted: 20 March 2018 / Published: 27 March 2018
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Abstract

Thermal runaway of single cells within a large scale lithium-ion battery is a well-known risk that can lead to critical situations if no counter measures are taken in today’s lithium-ion traction batteries for battery electric vehicles (BEVs), plug-in hybrid electric vehicles (PHEV) and hybrid electric vehicles (HEVs). The United Nations have published a draft global technical regulation on electric vehicle safety (GTR EVS) describing a safety feature to warn passengers in case of a thermal runaway. Fast and reliable detection of faulty cells undergoing thermal runaway within the lithium-ion battery is therefore a key factor in battery designs for comprehensive passenger safety. A set of various possible sensors has been chosen based on the determined cell thermal runaway impact. These sensors have been tested in different sized battery setups and compared with respect to their ability of fast and reliable thermal runaway detection and their feasibility for traction batteries. View Full-Text
Keywords: lithium-ion battery; thermal runaway; thermal propagation; fault detection; safety; global technical regulation on electrical vehicle safety (GTR EVS) lithium-ion battery; thermal runaway; thermal propagation; fault detection; safety; global technical regulation on electrical vehicle safety (GTR EVS)
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Koch, S.; Birke, K.P.; Kuhn, R. Fast Thermal Runaway Detection for Lithium-Ion Cells in Large Scale Traction Batteries. Batteries 2018, 4, 16.

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