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Uncertainties in the use of oxygen consumption calorimetry for heat release measurements in lithium-ion battery fires
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry. RISE Res Inst Sweden, Box 857, S-50115 Borås, Sweden.ORCID iD: 0000-0003-2160-8034
RISE Res Inst Sweden, Box 857, S-50115 Borås, Sweden..
RISE Res Inst Sweden, Box 857, S-50115 Borås, Sweden..
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.ORCID iD: 0000-0002-8019-2801
2024 (English)In: Fire safety journal, ISSN 0379-7112, E-ISSN 1873-7226, Vol. 143, article id 104078Article in journal (Refereed) Published
Abstract [en]

Accurate measurement of the heat release from a battery fire is vital for risk management, product development and construction of accurate models. Oxygen consumption calorimetry is the most common method for heat release measurements in experimental fire tests. The strength of the method is that it can be applied to unknown compositions of fuel with sufficient accuracy. Despite that this method is used to estimate heat release from battery fires, the method is subject to discussion. In this work, the method is studied in-depth, and potential errors are structured and quantified. Uncertainties associated with self-generated oxygen and internal heat generation, total gas release from the battery and impact on the heat release calculations, as well as the assumed E-factor (i.e., heat release per unit mass of oxygen consumed), are thoroughly discussed. For a Li-ion battery fire, it is concluded that oxygen consumption calorimetry will exclude internal heat generation and underestimate the total heat released from the external flaming fire by up to 10 %. In addition, high rate of combustion reactions can result in that the measured peak heat release rate is underestimated much more, up to 100 %.

Place, publisher, year, edition, pages
Elsevier, 2024. Vol. 143, article id 104078
Keywords [en]
Li-ion battery, Thermal runaway, Heat release rate, Total heat released, Fire tests, Oxygen consumption calorimetry, Carbon dioxide generation calorimetry
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:uu:diva-528539DOI: 10.1016/j.firesaf.2023.104078ISI: 001152979300001OAI: oai:DiVA.org:uu-528539DiVA, id: diva2:1860639
Part of project
Center for Swedish Batteries An Alliance for Ultrahigh Performance Batteries (SweBAL), Vinnova
Funder
Swedish Energy Agency, 51787-1StandUpVinnova, 2019-00064Available from: 2024-05-24 Created: 2024-05-24 Last updated: 2024-05-27Bibliographically approved

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Willstrand, OlaBrandell, Daniel

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