Study on the effect of spacing on thermal runaway propagation for lithium-ion batteries

• Published in: Journal of thermal analysis and calorimetry Vol. 140; no. 6; pp. 2849 - 2863
• Main Authors: Wang, Zhirong, Mao, Ning, Jiang, Fengwei
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01-06-2020; Springer; Springer Nature B.V
• Subjects: Analysis; Analytical Chemistry; Batteries; Chemistry; Chemistry and Materials Science; Heat transmission; Horizontal orientation; Inorganic Chemistry; Lithium; Lithium-ion batteries; Measurement Science and Instrumentation; Physical Chemistry; Polymer Sciences; Propagation; Rechargeable batteries; State of charge; Thermal runaway; Open environment; Lithium-ion battery; Thermal runaway propagation; Closed space; Spacing of the battery pack
• ISSN: 1388-6150; 1588-2926
• DOI: 10.1007/s10973-019-09026-6

In the open and closed space environments, the influence of spacing on battery pack thermal runaway propagation is studied. The mechanism of thermal runaway propagation for the lithium-ion battery pack is analyzed. The experimental results show that when the state of charge (SOC) of the battery is 100%, and the spacing is greater than 2 mm in the horizontal direction and 8 mm in the vertical arrangement, battery pack thermal runaway propagation hardly occurs in an open environment. In a closed environment, there is less chance of uncontrolled heat transmission in batteries when the rate of increase in the battery temperature is less than 0.66 °C s
−1
. When the horizontal spacing is more than 4 mm or the vertical spacing of the battery is more than 8 mm in a closed environment, thermal runaway propagation cannot occur in the batteries. The research results provide some reference for the arrangement of lithium-ion battery packs in transportation and storage.