Chrome Extension
WeChat Mini Program
Use on ChatGLM

Experimental investigation of water spray on suppressing lithium-ion battery fires

Fire Safety Journal(2021)

Cited 41|Views24
No score
Abstract
This work investigated the effects of water spray on lithium-ion battery (LIB) fires. Experiments were conducted on single cell and multi-cell batteries to study the effect of water volume and spray pressure on the fire extinguishing and the effectiveness of preventing propagation of thermal runaway in LIB's. Meanwhile, the potential hazard of water spray as a fire extinguishing method was assessed by investigating the influence of water on combustion gas production during extinguishing. It was found from these experiments that water spray can effectively extinguish 21700 LIB fires and reduce the maximum surface temperature of LIB. But the water spray has no significant difference in cooling rate after temperature recovery. The contact efficiency between the water spray and batteries decreased with the increase in water pressure. With sufficient volume of water spray and high contact efficiency, water spray can inhibit the thermal runaway propagation. With insufficient volume of water spray or low contact efficiency, the time to onset of thermal runaway was delayed. Water affects combustion gas production during thermal runaway. When water was applied, the concentration of CO, H2 and HF increased, while CO2 decreased.
More
Translated text
Key words
Lithium-ion battery safety,Water spray,Fire suppression,Risk assessment
AI Read Science
Must-Reading Tree
Example
Generate MRT to find the research sequence of this paper
Chat Paper
Summary is being generated by the instructions you defined