电源技术2025，Vol.49Issue(5)：956-965,10.DOI:10.3969/j.issn.1002-087X.2025.05.010
储能锂离子电池热失控特征行为及其能量流传输研究
Investigation of characteristic behaviors and energy flow transmission during thermal runaway in energy storage lithium ion batteries
摘要
Abstract
This study conducted a side-heating experiment on a 50 Ah lithium iron phosphate lithium ion battery,analyzing characteristics such as surface temperature changes,flame zone temperature and temperature gradient distribution,mass loss,heat generation,and gas heat release.The study also summarizes the energy flow transmission mechanisms between the battery and the emitted gases during the jet combustion process.The results show that the battery vents at 296 s,with the maxi-mum temperature rise rate reaching 22.7℃/s,at 385 s.The peak temperature 693.1℃occurs at 739 s.The peak temperature in the flame zone decreases with increasing height,with the maximum tem-perature of 865.4℃observed at 10 cm and the maximum temperature gradient of 61.33℃/cm at 5 cm.During the entire thermal runaway process,the battery loses 235 g of mass,with the maximum mass loss rate of 4.22 g/s,at 359 s.The total heat generation from the battery and the emitted gases are 2.59 MJ and 4.14 MJ,respectively,with peak heat release rates of 17.3 kW and 49.55 kW at 384 s.There is a critical point 411s in the thermal runaway process,before which the primary source of heat generation is the exothermic reactions within the battery,and after which it is the combustion of the emitted gases.This study aims to provide theoretical references for battery safety design and pas-sive protection strategies.关键词
锂离子电池/热失控/射流燃烧/侧向加热/能量流Key words
lithium ion battery/thermal runaway/jet combustion/side heating/energy flow分类
动力与电气工程引用本文复制引用
胡星辰,卢兰光,王贺武,王晋琦,王炎,何帅,牟瑞涛,姚惠昭,石会发,于瑞广,李亚伦..储能锂离子电池热失控特征行为及其能量流传输研究[J].电源技术,2025,49(5):956-965,10.基金项目
国家自然科学基金青年项目(52207240,52207241,52406253) （52207240,52207241,52406253）
山东省重点研发重大科技创新项目(2024CXGC010806) （2024CXGC010806）
山东省自然科学基金青年项目(ZR2022QE099) （ZR2022QE099）
山东省青优团队奖励计划(2023KJ323) （2023KJ323）
广东省联合基金(21201910260000023) （21201910260000023）
四川省科技计划资助项目(2023JDRC0016) （2023JDRC0016）
