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通过对锂电池热解气体的成分和浓度分析,选取CO和CH4作为探测气体,对比不同火灾探测器的锂离子电池热解气体探测效果。选取空客A320型全货机为模型构建仿真模拟环境,并按照1∶2比例设计中尺度实验平台,通过仿真模拟和实验手段对锂离子电池热失控探测情况进行分析。仿真模拟得到CO和CH4气体探测器报警时间分别为40s和51s,与实验结果基本一致。探测时间符合FAA对于飞机货舱火灾探测器的要求,可为探测技术的研究提供理论指导。
By analyzing the composition and concentration of pyrolysis gases in lithium batteries, CO and CH4 were selected as detection gases to compare the detection results of pyrolysis gases of lithium-ion batteries with different fire detectors. Select Airbus A320 full cargo aircraft as a model to build a simulation environment, and design a mesoscale experimental platform according to a ratio of 1: 2. The thermal runaway detection of lithium ion batteries is analyzed through simulation and experiment. Simulation and simulation CO and CH4 gas detector alarm time were 40s and 51s, and the experimental results are basically the same. The detection time meets FAA requirements for aircraft cargo fire detectors, which can provide theoretical guidance for the exploration of detection technology.