A lumped model of venting during thermal runaway in a cylindrical lithium cobalt oxide lithium-ion cell

Paul Tiberiu Coman, Sean Rayman, Ralph White

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

This paper presents a mathematical model built for analyzing the intricate thermal behavior of a 18650 LCO (Lithium Cobalt Oxide) battery cell during thermal runaway when venting of the electrolyte and contents of the jelly roll (ejecta) is considered. The model consists of different ODEs (Ordinary Differential Equations) describing reaction rates and electrochemical reactions, as well as the isentropic flow equations for describing electrolyte venting. The results are validated against experimental findings from Golubkov et al. [1] [Andrey W. Golubkov, David Fuchs, Julian Wagner, Helmar Wiltsche, Christoph Stangl, Gisela Fauler, Gernot Voitice Alexander Thaler and Viktor Hacker, RSC Advances, 4:3633–3642, 2014] for two cases - with flow and without flow. The results show that if the isentropic flow equations are not included in the model, the thermal runaway is triggered prematurely at the point where venting should occur. This shows that the heat dissipation due to ejection of electrolyte and jelly roll contents has a significant contribution. When the flow equations are included, the model shows good agreement with the experiment and therefore proving the importance of including venting.
OriginalsprogEngelsk
TidsskriftJournal of Power Sources
Vol/bind307
Sider (fra-til)56-62
ISSN0378-7753
DOI
StatusUdgivet - 2016

Fingeraftryk

lithium oxides
venting
cobalt oxides
Lithium
Electrolytes
flow equations
Cobalt
lithium
Ions
Oxides
electrolytes
cells
ions
Heat losses
Ordinary differential equations
Reaction rates
ejecta
ejection
Mathematical models
electric batteries

Citer dette

Coman, Paul Tiberiu ; Rayman, Sean ; White, Ralph. / A lumped model of venting during thermal runaway in a cylindrical lithium cobalt oxide lithium-ion cell. I: Journal of Power Sources. 2016 ; Bind 307. s. 56-62.
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abstract = "This paper presents a mathematical model built for analyzing the intricate thermal behavior of a 18650 LCO (Lithium Cobalt Oxide) battery cell during thermal runaway when venting of the electrolyte and contents of the jelly roll (ejecta) is considered. The model consists of different ODEs (Ordinary Differential Equations) describing reaction rates and electrochemical reactions, as well as the isentropic flow equations for describing electrolyte venting. The results are validated against experimental findings from Golubkov et al. [1] [Andrey W. Golubkov, David Fuchs, Julian Wagner, Helmar Wiltsche, Christoph Stangl, Gisela Fauler, Gernot Voitice Alexander Thaler and Viktor Hacker, RSC Advances, 4:3633–3642, 2014] for two cases - with flow and without flow. The results show that if the isentropic flow equations are not included in the model, the thermal runaway is triggered prematurely at the point where venting should occur. This shows that the heat dissipation due to ejection of electrolyte and jelly roll contents has a significant contribution. When the flow equations are included, the model shows good agreement with the experiment and therefore proving the importance of including venting.",
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A lumped model of venting during thermal runaway in a cylindrical lithium cobalt oxide lithium-ion cell. / Coman, Paul Tiberiu ; Rayman, Sean; White, Ralph.

I: Journal of Power Sources, Bind 307, 2016, s. 56-62.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - A lumped model of venting during thermal runaway in a cylindrical lithium cobalt oxide lithium-ion cell

AU - Coman, Paul Tiberiu

AU - Rayman, Sean

AU - White, Ralph

PY - 2016

Y1 - 2016

N2 - This paper presents a mathematical model built for analyzing the intricate thermal behavior of a 18650 LCO (Lithium Cobalt Oxide) battery cell during thermal runaway when venting of the electrolyte and contents of the jelly roll (ejecta) is considered. The model consists of different ODEs (Ordinary Differential Equations) describing reaction rates and electrochemical reactions, as well as the isentropic flow equations for describing electrolyte venting. The results are validated against experimental findings from Golubkov et al. [1] [Andrey W. Golubkov, David Fuchs, Julian Wagner, Helmar Wiltsche, Christoph Stangl, Gisela Fauler, Gernot Voitice Alexander Thaler and Viktor Hacker, RSC Advances, 4:3633–3642, 2014] for two cases - with flow and without flow. The results show that if the isentropic flow equations are not included in the model, the thermal runaway is triggered prematurely at the point where venting should occur. This shows that the heat dissipation due to ejection of electrolyte and jelly roll contents has a significant contribution. When the flow equations are included, the model shows good agreement with the experiment and therefore proving the importance of including venting.

AB - This paper presents a mathematical model built for analyzing the intricate thermal behavior of a 18650 LCO (Lithium Cobalt Oxide) battery cell during thermal runaway when venting of the electrolyte and contents of the jelly roll (ejecta) is considered. The model consists of different ODEs (Ordinary Differential Equations) describing reaction rates and electrochemical reactions, as well as the isentropic flow equations for describing electrolyte venting. The results are validated against experimental findings from Golubkov et al. [1] [Andrey W. Golubkov, David Fuchs, Julian Wagner, Helmar Wiltsche, Christoph Stangl, Gisela Fauler, Gernot Voitice Alexander Thaler and Viktor Hacker, RSC Advances, 4:3633–3642, 2014] for two cases - with flow and without flow. The results show that if the isentropic flow equations are not included in the model, the thermal runaway is triggered prematurely at the point where venting should occur. This shows that the heat dissipation due to ejection of electrolyte and jelly roll contents has a significant contribution. When the flow equations are included, the model shows good agreement with the experiment and therefore proving the importance of including venting.

KW - Thermal runaway

KW - 18650

KW - Electrolyte venting

KW - Ejecta venting

KW - Isentropic flow equations

U2 - 10.1016/j.jpowsour.2015.12.088

DO - 10.1016/j.jpowsour.2015.12.088

M3 - Journal article

VL - 307

SP - 56

EP - 62

JO - Journal of Power Sources

JF - Journal of Power Sources

SN - 0378-7753

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