TY - JOUR
T1 - Heat transfer effects on accelerating rate calorimetry of the thermal runaway of Lithium-ion batteries
AU - He, Xuanze
AU - Zhao, Chunpeng
AU - Hu, Zhenwen
AU - Restuccia, Francesco
AU - Richter, Franz
AU - Wang, Qinsong
AU - Rein, Guillermo
N1 - Funding Information:
The authors thank the support from the China Scholarship Council (CSC) and the Great Britain-China Educational Trust (GBCET) to XH and ZH.
Publisher Copyright:
© 2022 The Authors
PY - 2022/4/26
Y1 - 2022/4/26
N2 - The thermal runaway of Lithium-ion batteries (LIBs) is a fire hazard. The Accelerating Rate Calorimetry (ARC) device is commonly used to investigate thermal runaway parameters of LIBs by assuming adiabatic conditions. However, this assumption ignores internal heat transfer within the cell and external heat transfer at the cell surface. In this work, we conducted ARC experiments using prismatic LiCoO
2 cells of 50 mm in side to study the effect of heat transfer limitations. Results show that the external temperature difference between this cell surface and ARC walls varies between 0 and 1.5 ℃ before thermal runaway and increases from 10 to 130 ℃ while thermal runaway occurs. Ignoring external heat transfer causes the heat of reaction of the cell to be underestimated by 12%. To study the internal heat transfer, two models are developed and show that heat transfer causes an internal temperature difference that causes an error of kinetics estimation, and the error grows with cell size. Ignoring heat transfer leads to errors on the thermal runaway parameters quantified by ARC, and these errors could propagate to battery safety design and predictions. This study contributes to designing better ARC experiments and a better understanding of battery safety.
AB - The thermal runaway of Lithium-ion batteries (LIBs) is a fire hazard. The Accelerating Rate Calorimetry (ARC) device is commonly used to investigate thermal runaway parameters of LIBs by assuming adiabatic conditions. However, this assumption ignores internal heat transfer within the cell and external heat transfer at the cell surface. In this work, we conducted ARC experiments using prismatic LiCoO
2 cells of 50 mm in side to study the effect of heat transfer limitations. Results show that the external temperature difference between this cell surface and ARC walls varies between 0 and 1.5 ℃ before thermal runaway and increases from 10 to 130 ℃ while thermal runaway occurs. Ignoring external heat transfer causes the heat of reaction of the cell to be underestimated by 12%. To study the internal heat transfer, two models are developed and show that heat transfer causes an internal temperature difference that causes an error of kinetics estimation, and the error grows with cell size. Ignoring heat transfer leads to errors on the thermal runaway parameters quantified by ARC, and these errors could propagate to battery safety design and predictions. This study contributes to designing better ARC experiments and a better understanding of battery safety.
UR - http://www.scopus.com/inward/record.url?scp=85133924819&partnerID=8YFLogxK
U2 - 10.1016/j.psep.2022.04.028
DO - 10.1016/j.psep.2022.04.028
M3 - Article
SN - 0957-5820
VL - 162
SP - 684
EP - 693
JO - PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
JF - PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
ER -