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

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摘要 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°C,flame heights of 70–75 cm,a significantly higher heat release rate of40.1 k W(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 parameter,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.
出处 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2024年第4期609-618,共10页 能源化学(英文版)
基金 supported by the New Energy Vehicle Power Battery Life Cycle Testing and Verification Public Service Platform Project[2022-235-224] the Beijing Science and Technology Planning Project[Z221100005222004] the Key Technologies Research and Development Program[2021YFB2012504] the Beijing Goldenbridge Project[ZZ2023002]。
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