The Efficiency of Perfluorohexanone on Suppressing Lithium-Ion Battery Fire and Its Device Development

At present, lithium-ion batteries (LIBs) with excellent performance have attracted the attention of the industry, but there are still many fire and explosion risks, threatening the safety of human life and property. Therefore, as the last barrier, fire extinguishing is important and the performance of fire extinguishing device determines the ultimate fire extinguishing effect. In this study, a plunger type perfluorohexanone (C6F12O) fire extinguishing device was developed, and key components such as gas generating device and puncture valve were improved. The 271 Ah lithium iron phosphate battery was used to verify the fire extinguishing efficiency and environmental adaptability of this device in extreme environments. The results show that in the three groups of fire extinguishing experiments at normal temperature NT, − 40°C and 85°C, the time from the start of spraying to extinguishing the open fire is 11 s, 14 s and 9 s respectively, indicating that the fire extinguishing efficiency is good in extreme environments. Additionally, no re-ignition occurred and the safety valves of the other batteries did not open. The environment temperature didn’t exceed 90°C within 30 min after the fire was extinguished. The device can be started normally in extreme environments, which indicates the good environmental adaptability of the fire extinguishing device.