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

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Journal of Energy Chemistry 2024年第4期91卷 609-618页

作者： Zhanglong Yu Xueling Shen Ran Xu Zheng Wang Zengming Wan Mingyang Chen Yi Cui Yanyan Fang Xiaoli Ma China Automotive Battery Research Institute Co. Ltd.Beijing 101407China China Grinm Group Co. Ltd.Beijing 100088China Ministry of Industry and Information Technology Equipment Industry Development CenterBeijing 100846China Hefei Guoxuan High-tech Power energy Co. Ltd.Hefei 230000AnhuiChina

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 *** research included quantitative measurements of the combustion duration,flame height,combustion temperature,heat release rate,and total heat *** 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 *** on these experimental results,a normalized total heat release(NORTHR)parameter was proposed,demonstrating good universality for batteries with different *** 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.

关键词： combustion behavior Electric bicycle Lithium-ion battery Fire extinguishing Normalized total heat release

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combustion behavior and mechanism of molecular perovskite energetic material DAP-4-based composites with metal fuel Al

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Defence Technology(防务技术) 2023年第9期27卷 53-63页

作者： Peng Deng Xue-yong Guo Hua Fang Rui Liu Peng-wan Chen State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing100081PR China

Combined with the oxidizer anions and fuel cations,molecular perovskite energetic materials show a good *** this work,the combustion behavior and mechanism of metal fuel aluminium(Al)with molecular perovskite energetic material(H_(2)dabco)[NH4(ClO_(4))_(3)](DAP-4)as a high-energy oxidant was *** DAP-4 based composites with metal fuel Al were designed and fabricated by the different mass *** showed that DAP-4 exhibits a good oxygen-supplied capacity for enhancing the combustion performance of *** maximum combustion heat of DAP-4/Al-3 at the Al/O mass ratio of 38:62 is up to 10,412 J/g in the inert gas,which is higher than those of other ratios and the mixtures of other energetic materials and *** evolution of pressure output,pressurization rate,and flame temperature was monitored for DAP-4/Al with different mass *** DAP-4/Al/F were characterized by burning *** combustion reaction mechanism of metal fuel Al with DAP-4 as a high-energy oxidant was ***-4 was ignited firstly and released acid and oxidizing gases,which corroded Al_(2)O_(3)shells on Al particle surfaces and accelerated the combustion reaction with Al to release a lot of *** work offered a new idea that molecular perovskite energetic materials have great potential in the high-energy Al-based solid rocket propellants.

关键词： DAP-4 Metal fuel al Oxidant combustion behavior Reaction mechanism

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combustion behavior and influence mechanism of CO on iron ore sintering with flue gas recirculation

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Journal of Central South University 2014年第6期21卷 2391-2396页

作者：范晓慧余志元甘敏陈许玲季志云 School of Minerals Processing and Bioengineering Central South University

The properties of circulating gas have a significant effect on sintering with flue gas recirculation,and the influence of CO in sintering process was *** results show that the post-combustion of CO conducts in sinter zone when flue gas passes through the sintering bed,which releases much heat and reduces the consumption of solid *** ratio of coke breeze can be reduced from 5% to 4.7% with 2% CO in circulating flue *** addition,with the increase of CO content in circulating flue gas,the combustion efficiency of fuel is improved,and the flame front is increased slightly while still matches with the heat transfer *** are beneficial to increasing the maximum temperature and prolonging the high temperature duration,especially in the upper layer of sintering *** a consequence,the productivity,vertical sintering velocity and quality of sinter are improved.

关键词： flue gas recirculation heat transfer front flame front combustion behavior

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