首页|Understanding the combustion behavior of electric bicycle batteries and unveiling its relationship with fire extinguishing

Understanding the combustion behavior of electric bicycle batteries and unveiling its relationship with fire extinguishing

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In this study,a detailed analysis of the combustion behaviors of the lithium iron phosphate(LFP)and lithium manganese oxide(LMO)batteries used in electric bicycles was conducted.This research included quantitative measurements of the combustion duration,flame height,combustion temperature,heat release rate,and total heat release.The results indicated that LMO batteries exhibited higher combustion temperatures of 600-700 ℃,flame heights of 70-75 cm,a significantly higher heat release rate of 40.1 kW(12 Ah),and a total heat release of 1.04 MJ(12 Ah)compared to LFP batteries with the same capacity.Based on these experimental results,a normalized total heat release(NORTHR)parameter was proposed,demonstrating good universality for batteries with different capacities.Utilizing this parame-ter,quantitative calculations and optimization of the extinguishing agent dosage were conducted for fires involving these two types of batteries,and the method was validated by extinguishing fires for these two types of battery packs with water-based extinguishing fluids.

Combustion behaviorElectric bicycleLithium-ion batteryFire extinguishingNormalized total heat release

Zhanglong Yu、Xueling Shen、Ran Xu、Zheng Wang、Zengming Wan、Mingyang Chen、Yi Cui、Yanyan Fang、Xiaoli Ma

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China Automotive Battery Research Institute Co.,Ltd.,Beijing 101407,China

China Grinm Group Co.,Ltd.,Beijing 100088,China

Ministry of Industry and Information Technology,Equipment Industry Development Center,Beijing 100846,China

Hefei Guoxuan High-tech Power energy Co.,Ltd.,Hefei 230000,Anhui,China

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New Energy Vehicle Power Battery Life Cycle Testing and Verification Public Service Platform ProjectBeijing Science and Technology Planning ProjectKey Technologies Research and Development ProgramBeijing Goldenbridge Project

2022-235-224Z2211000052220042021YFB2012504ZZ2023002

2024

10.1016/j.jechem.2024.01.005

能源化学
中国科学院大连化学物理研究所 中国科学院成都有机化学研究所

能源化学

CSTPCDEI
影响因子：0.654
ISSN：2095-4956
年,卷(期)：2024.91(4)
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