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Characteristics of lithium-ion batteries during fire tests

Fredrik Larsson (Institutionen för teknisk fysik, Nukleär teknik) ; P. Andersson ; P. Blomqvist ; Anders Lorén ; Bengt-Erik Mellander (Institutionen för teknisk fysik, Nukleär teknik)
Journal of Power Sources (0378-7753). Vol. 271 (2014), p. 414-420.
[Artikel, refereegranskad vetenskaplig]

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.

Nyckelord: Lithium ion; Battery; Hydrogen fluoride; Phosphorous oxyfluoride; Heat release rate; Fire



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Denna post skapades 2014-09-01. Senast ändrad 2015-01-16.
CPL Pubid: 202192

 

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Institutioner (Chalmers)

Institutionen för teknisk fysik, Nukleär teknik (2006-2015)

Ämnesområden

Energi
Materialvetenskap
Transport
Hållbar utveckling
Elektroteknik och elektronik

Chalmers infrastruktur

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Denna publikation ingår i:


Assessment of safety characteristics for Li-ion battery cells by abuse testing