Characteristics of lithium-ion batteries during fire tests

Characteristics of lithium-ion batteries during fire tests Commercial lithium-ion battery cells are exposed to a controlled propane fire in order to evaluate heat release rate (HRR), emission of toxic gases as well as cell temperature and voltage under this type of abuse. The study includes six abuse tests on cells having lithium–iron phosphate (LFP) cathodes and, as a comparison, one test on conventional laptop battery packs with cobalt based cathode. The influence of different state of charge (SOC) is investigated and a limited study of the effect of water mist application is also performed. The total heat release (THR) per battery energy capacity are determined to be 28–75 kJ Wh−1 and the maximum HRR values to 110–490 W Wh−1. Hydrogen fluoride (HF) is found in the released gases for all tests but no traceable amounts of phosphorous oxyfluoride (POF3) or phosphorus pentafluoride (PF5) are detected. An extrapolation of expected HF emissions for a typical automotive 10 kWh battery pack exposed to fire gives a release of 400–1200 g HF. If released in a confined environment such emissions of HF may results in unacceptable exposure levels. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Power Sources Elsevier

Characteristics of lithium-ion batteries during fire tests

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Publisher
Elsevier
Copyright
Copyright © 2014 Elsevier B.V.
ISSN
0378-7753
D.O.I.
10.1016/j.jpowsour.2014.08.027
Publisher site
See Article on Publisher Site

Abstract

Commercial lithium-ion battery cells are exposed to a controlled propane fire in order to evaluate heat release rate (HRR), emission of toxic gases as well as cell temperature and voltage under this type of abuse. The study includes six abuse tests on cells having lithium–iron phosphate (LFP) cathodes and, as a comparison, one test on conventional laptop battery packs with cobalt based cathode. The influence of different state of charge (SOC) is investigated and a limited study of the effect of water mist application is also performed. The total heat release (THR) per battery energy capacity are determined to be 28–75 kJ Wh−1 and the maximum HRR values to 110–490 W Wh−1. Hydrogen fluoride (HF) is found in the released gases for all tests but no traceable amounts of phosphorous oxyfluoride (POF3) or phosphorus pentafluoride (PF5) are detected. An extrapolation of expected HF emissions for a typical automotive 10 kWh battery pack exposed to fire gives a release of 400–1200 g HF. If released in a confined environment such emissions of HF may results in unacceptable exposure levels.

Journal

Journal of Power SourcesElsevier

Published: Dec 20, 2014

References

  • J. Power Sources
    Ohsaki, T.; Kishi, T.; Kuboki, T.; Takami, N.; Shimura, N.; Sato, Y.; Sekino, M.; Satoh, A.

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