Research on thermal runaway characteristics of ternary lithium ion battery in low oxygen environment

Abstract

Abstract: The thermal runaway characteristics of NCM811ternary soft-packed lithium ion battery in closed space with oxygen concentration of 21% and 10.64% were studied. The experimental results show that when the oxygen concentration is 21%, continuous flame and then mars is sprayed. When the oxygen concentration is down to 10.64% , continuous flame is not formed on mars. The fact that the mars ejected during the thermal runaway of the battery can burn briefly in a low-oxygen environment, but the mars cannot form a continuous flame indicates that the thermal runaway of NCM811ternary lithium ion battery is a process of releasing oxygen, but the oxygen released by the battery is not enough to sustain the continuous combustion of mars.

Key words: ternary lithium ion battery, thermal runaway, low oxygen concentration, flame, mars

ZHANG Shao-yu, DONG Hai-bin, XIAN Xue-lei, YI Cheng-yi, LI Yi, LIU Lian-xi, YU Dong-xing, SHENG Yan-feng, MA Jian-qin, ZHAO Qing-song. Research on thermal runaway characteristics of ternary lithium ion battery in low oxygen environment[J]. Fire Science and Technology, 2020, 39(2): 161-164.

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Research on thermal runaway characteristics of ternary lithium ion battery in low oxygen environment

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