Laminar Burning Velocity of the Dimethyl Carbonate-Air Mixture Formed by the Li-Ion Electrolyte Solvent
M. Henriksen1, K. Vaagseather1, A. V. Gaathaug1, J. Lundberg1, S. Forseth2, D. Bjerketvedt1
1University of South-Eastern Norway, Porsgrunn, Telemark, Norway
2Norwegian Defence Research Establishment, Oslo, Norway
Keywords: скорость ламинарного пламени, диметилкарбонат, литий-ионный электролит, газовый взрыв, laminar burning velocity, dimethyl carbonate, Li-ion battery electrolyte, gas explosion
Abstract
If a Li-ion cell fails and the electrolyte leaks out into air, a flammable premixed gas cloud may be formed. The electrolyte combustion energy is 65 ÷ 70 % of the total energy content of the cell. The main objective of this study is to determine the laminar burning velocity and the Markstein length for dimethyl carbonate and propane in a 20-liter explosion sphere with initial conditions at 100 kPa and 300 K. Five different stretch extrapolation models for the laminar burning velocity give practically the same result. The experimental results agree well with the previously published data and are slightly lower than the theoretical predictions. The laminar burning velocity for dimethyl carbonate is measured close to the saturation point under the initial conditions, which has not been previously reported.
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