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

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 elect...

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Published inBatteries (Basel) Vol. 4; no. 2; p. 16
Main Authors Koch, Sascha, Birke, Kai, Kuhn, Robert
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.06.2018
Subjects
Chemical reactions
Design
Electric cells
Electric vehicles
Electrolytes
fault detection
global technical regulation on electrical vehicle safety (GTR EVS)
Hybrid electric vehicles
Lithium
Lithium-ion batteries
lithium-ion battery
Parameter estimation
Passenger safety
Product safety
Propagation
Rechargeable batteries
safety
Sensors
thermal propagation
Thermal runaway
Traction
Vehicle safety
Germany
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Summary: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.
ISSN:2313-0105
2313-0105
DOI:10.3390/batteries4020016