锂二次电池安全技术及其在储能电站的应用  

Safety technology of lithium secondary battery and its application in energy storage power station

作　　者：方明明 周一军 尹海霞 董红赞 杨晓辉 戚宏勋 Fang Mingming;Zhou Wenjun;Yin Haixia;Xun Hongzan;Yang Xiaohui;Qi Hongxun

机构地区：[1]上海交通大学变革性分子前沿科学中心,上海200030 [2]上海电动工具研究所(集团)有限公司,上海200233 [3]中认尚动(上海)检测技术有限公司,上海200233 [4]中电智慧储能科技(上海)有限公司,上海200063 [5]中国电力工程顾问集团有限公司,北京100120

出　　处：《电动工具》2024年第5期1-5,共5页Electric Tool

摘　　要：锂二次电池具有高能量密度、长循环寿命等优势,在储能技术和工程中得到广泛应用;但工程应用中,锂二次电池会遭受机械、电气或热力滥用等,导致材料损坏并产生异常发热现象,使得热量积聚与内部放热化学反应加剧,最终引发热失控。在热失控过程中,可燃性气体在热量产生和集聚过程中被释放出来,当可燃性气体达到爆炸极限情况,在外部高温作用下可能会导致储能电站爆炸事故,严重危及储能电站的安全稳定运行。探讨锂二次电池热失控产生的原因,分析锂二次电池热失控的预警技术,研究锂二次电池的热失控消防技术进展,为当前储能电站锂二次电池的安全设计提供参考。Lithium secondary batteries offer high energy density and long cycle life,which make them widely used in energy storage technologies and engineering projects.However,during practical applications,lithium secondary batteries may suffer mechanical,electrical,or thermal abuse,resulting in material damage and abnormal heating,leading to heat accumulation and internal exothermic chemical reactions to intensify,and eventually causing thermal runaway.During the thermal runaway,flammable gas is released during heat generation and concentration,and when flammable gas reaches the explosion limit,it may lead to the explosion accident of the energy storage power station under the action of external high temperature,which seriously endangers the safe and stable operation of the energy storage power station.The causes of lithium secondary battery thermal runaway are discussed,the early warning technology of lithium secondary battery thermal runaway is analyzed,the progress of lithium secondary battery thermal runaway fire technology is studied,and references for the safety design of lithium secondary battery in current energy storage power station are provided.

关 键 词：锂离子电池 二次电池 储能 热失控 安全 预警 

分 类 号：TK019[动力工程及工程热物理]