Journal
APPLIED THERMAL ENGINEERING
Volume 157, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.applthermaleng.2019.113750
Keywords
Lithium-ion battery; Pack; Thermal behavior; Fire propagation
Funding
- National Key Research and Development Program of China [2018YFC0808600]
- Key Laboratory of Firefighting and Rescue Technology, Ministry of Public Security [KF201801]
- Programs of Senior Talent Foundation of Jiangsu University [17JDG036]
- Shanghai Sailing Program [18YF1409600]
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Understanding the fire hazard of lithium-ion battery (LIB) is important for the safety issues during their manufacture, storage, transportation, and usage. In this work, experiments are conducted to analyze the mechanisms of thermal and fire propagation of multiple LIBs in the package. According to the results, it is found that the thermal and fire propagation of multiple LIBs can be triggered easily, and will accelerate continuously. In the later stage of the fire, more and more batteries can be ignited simultaneously. The maximum of 5.6 batteries in Test A ignite at the same time, and in Test B, there can be 32 batteries burning together to reach the largest mass loss rate (MLR). The package with more batteries has higher average MLR and fire propagation has a great effect on the combustion efficiency of LIB. The heat flux and impact pressure results also indicate the simultaneous combustion and ejection of multiple batteries. This work can provide more useful data for fire protection in large-scale battery storage systems.
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