China Safety Science Journal ›› 2021, Vol. 31 ›› Issue (9): 44-51.doi: 10.16265/j.cnki.issn1003-3033.2021.09.007

• Safety engineering technology • Previous Articles     Next Articles

Effect of heating mode on thermal runaway behavior of lithium ion battery

ZHANG Qingsong, LIU Tiantian, BAI Wei   

  1. Center of Aircraft Fire and Emergency,Civil Aviation University of China,Tianjin 300300,China
  • Received:2021-06-05 Revised:2021-08-08 Online:2021-09-28 Published:2022-03-28

Abstract: In order to investigate safety of lithium-ion batteries under different heating conditions in the process of transportation and use, thermal runaway of battery was caused by a cylindrical heating rod and a spring heating ring at a temperature rise rate of 5 and 10 ℃/min respectively, and experimental phenomenon and data were studied. Thermal runaway gas was sampled and gas composition was analyzed. The results show that thermal runaway process of battery all goes through heat storage stage, exhaust stage and thermal runaway stage. At 5 and 10 ℃/min, time of thermal runaway caused by spring heating ring is 18.3% and 40.2% faster than that of heating rod, respectively, and the maximum temperature in the thermal runaway stage decreased by 11.2 and 24.6 ℃, respectively. When battery is heated by heating rod, combustion is more sufficient, and the maximum thermal runaway temperature of battery decreases with the increase of temperature rising rate of heating device.

Key words: heating method, lithium ion battery, thermal runaway, thermal hazard, heating methods

CLC Number: