低压环境下18650型锂离子电池热失控特性

Thermal Runaway Characteristics of 18650 Lithium-ion Battery in Low Pressure Environment

针对航空货运锂离子电池的特殊环境,以及运输过程中热失控安全问题,自主设计搭建锂离子电池热失控实验平台,在康定机场(4290m,60kPa)高高原航空安全实验室开展实验。主要研究热失控过程中不同荷电量锂离子电池温度变化、氧消耗量、CO和CO_2生成量以及开路电压变化情况。通过低压环境下锂离子电池热失控的研究,为航空货运锂离子电池的安全性提供了一定的理论支持。

According to the special environment of air cargo lithium-ion batteries and the thermal runaway safety problems during transportation,a lithium-ion batteries thermal runaway experimental platform was designed and built independently.The experiment was carried out in the high plateau Aviation Safety Laboratory of Kangding Airport(4 290 m,60 kPa).The temperature change,oxygen consumption,CO and CO2 generation and variation of open circuit voltage of lithium ion batteries with different charge during thermal runaway were studied.The research on the thermal runaway of lithium ion battery under low pressure environment provides some theoretical support for the safety of air cargo lithium ion battery.