低压环境下锂离子电池安全性研究进展

Research progress on safety of lithium-ion batteries under low pressure

针对Halon 1301/1211灭火剂很难抑制航空运输环境锂离子电池热失控的问题,分析低压环境锂离子电池组分材料热反应机理,论述低压环境下锂离子电池热失控放气时间、表面温度、传播过程、点燃时间、质量损失速率、热释放速率等研究进展。展望锂离子电池在航空运输环境下的安全性的研究前景,提出今后研究方向主要是低压环境下热失控过程及产物生成机理、开发新型探测装置早期预警控制、寻求高效灭火介质并设计相关灭火装置防控锂离子电池航空输运火灾。

Since the Halon 1301/1211 extinguishing agent is difficult to inhibit the thermal runaway of lithium ion battery under the air transport environment,the thermal reaction mechanism of component materials for lithium ion batteries in low pressure environment was analyzed.Research progress on deflation time, surface temperature, spreading process, time to ignition, mass loss rate and heat release rate of thermal runaway induced by lithium ion batteries were reviewed. The research prospect of safety of lithiumion batteries under air transport environment was forecasted and it is proposed that future research may mainly focus on thermal runaway process and product generation mechanism under lower pressure environment, development of novel detectors for early warning and control, searching for efficient fire extinguishing media and design of relevant fire extinguishing apparatus, and hoping to prevent and control fire disasters induced by lithium ion batteries during air transport.