TY - JOUR
T1 - Numerical investigation of suppressing thermal runaway propagation in a lithium-ion battery pack using thermal insulators
AU - Gong, Junhui
AU - Liu, Bo
AU - Lian, Haochen
AU - Liu, Jingyi
AU - Fu, Hui
AU - Miao, Yuxuan
AU - Liu, Jialong
N1 - Publisher Copyright:
© 2023 The Institution of Chemical Engineers
PY - 2023/8
Y1 - 2023/8
N2 - Thermal runaway propagation (TRP) in a lithium-ion battery pack is crucial to its safety concerning the potential hazards of fire or explosion. In current study, a TRP suppression method for a 4 × 4 battery pack using three insulation materials, silicate, ceramic and glass fiber boards, is numerically investigated. Reliability of the model is first verified by experimental temperature of a single battery during TR. Then, three sets of TRP scenarios initiated by external heating are studied to reveal the effects of insulation type, thickness (0.5–4 mm) and layout. The results show that thermal conductivity of insulation impacts its performance more greatly than thickness, and glass fiber outperforms silicate and ceramic fibers in preventing TRP. Bidirectional layout (BL) of insulation boards performs better than unidirectional layout (UL). For UL, row-to-row TRP exists and the TRP process is accelerated compared with non-insulation case if insulation boards fail, implying UL can prevent TRP only if the row-to-row TRP is inhibited. While for BL, TRP is only observed for 0.5 mm silicate fiber boards, and the critical heating power (6.5 kWm−2) triggering TRP in battery pack is much lower. The outcomes may provide useful theoretical bases and suggestions for safety design and risk assessment of battery pack.
AB - Thermal runaway propagation (TRP) in a lithium-ion battery pack is crucial to its safety concerning the potential hazards of fire or explosion. In current study, a TRP suppression method for a 4 × 4 battery pack using three insulation materials, silicate, ceramic and glass fiber boards, is numerically investigated. Reliability of the model is first verified by experimental temperature of a single battery during TR. Then, three sets of TRP scenarios initiated by external heating are studied to reveal the effects of insulation type, thickness (0.5–4 mm) and layout. The results show that thermal conductivity of insulation impacts its performance more greatly than thickness, and glass fiber outperforms silicate and ceramic fibers in preventing TRP. Bidirectional layout (BL) of insulation boards performs better than unidirectional layout (UL). For UL, row-to-row TRP exists and the TRP process is accelerated compared with non-insulation case if insulation boards fail, implying UL can prevent TRP only if the row-to-row TRP is inhibited. While for BL, TRP is only observed for 0.5 mm silicate fiber boards, and the critical heating power (6.5 kWm−2) triggering TRP in battery pack is much lower. The outcomes may provide useful theoretical bases and suggestions for safety design and risk assessment of battery pack.
KW - Lithium-ion battery pack
KW - Numerical simulation
KW - Temperature evolution
KW - Thermal insulation boards
KW - Thermal runaway propagation suppression
UR - http://www.scopus.com/inward/record.url?scp=85164268927&partnerID=8YFLogxK
U2 - 10.1016/j.psep.2023.06.092
DO - 10.1016/j.psep.2023.06.092
M3 - 文章
AN - SCOPUS:85164268927
SN - 0957-5820
VL - 176
SP - 1063
EP - 1075
JO - Process Safety and Environmental Protection
JF - Process Safety and Environmental Protection
ER -
