储能科学与技术2024，Vol.13Issue(7)：2425-2431,7.DOI:10.19799/j.cnki.2095-4239.2024.0121
储能锂离子电池高温诱发热失控特性研究
Characterization study on overheat-induced thermal runaway for lithium-ion battery in energy storage
摘要
Abstract
Energy storage systems play a crucial role in the advancement of modern electric power systems.Among these,lithium-ion battery energy storage is a key area of focus.A technical challenge hindering the application of lithium-ion batteries in energy storage is safety.This paper explores the electrical and thermal characteristics of battery thermal runaway triggered by overheating.A stepwise heating experiment,employing natural convection heat transfer,was conducted to analyze the failure modes of batteries at various temperature thresholds using the Semenov theory.This research examines changes in voltage,the average voltage drop rate,and self-heating characteristics across different temperatures,considering internal side reactions.Results indicate that thermal runaway occurs at 140-160℃,peaking at a maximum temperature of 464.6℃.The phenomena of rupture and gas leakage during the thermal runaway considerably influence the peak temperature observed.Furthermore,when the state of charge of the battery is reduced to 50%,the battery transitions from thermal runaway to functional failure.These findings provide a foundation for future research on safety management and mitigation of thermal runaway in lithium-ion batteries.关键词
锂离子电池/电池安全/热失控/过温故障/热分析Key words
lithium-ion battery/battery safety/thermal runaway/overheat fault/thermal analysis分类
能源科技引用本文复制引用
刘承鑫,李梓衡,陈泽宇,李鹏祥,陶庆一..储能锂离子电池高温诱发热失控特性研究[J].储能科学与技术,2024,13(7):2425-2431,7.基金项目
国家自然科学基金项目(51977029),宁夏自然科学基金项目(2023AA03373),辽宁省科技计划项目(2022JH2/101300225). （51977029）
