摘要
为量化100%荷电状态的18650型锂离子电池热解气体燃烧对受限空间环境温度产生的影响,建立了受限空间内锂离子电池热解气体燃烧的产热模型,基于火焰高度估算热解气体燃烧热释放速率,使用Fluent软件模拟受限空间内热解气体燃烧导致环境温度变化并进行实验验证。结果表明:热解气体燃烧热释放速率峰值为(312.26±23.41)W,产生的热量为(1610.01±176.24)J,对受限空间造成的温度升高为254.74 K,仿真结果与实验数据基本吻合,验证了模型的可靠性。
In order to quantify the influence of pyrolysis gas combustion of 18650 li-ion battery with 100%state of charge on the ambient temperature of confined space,a heat generation model of pyrolysis gas combustion of li-ion battery in confined space was established.The heat release rate of pyrolysis gas combustion was estimated based on the flame height,and the ambient temperature change caused by pyrolysis gas combustion in confined space was simulated by Fluent software.The results showed that the peak heat release rate of pyrolysis gas combustion is(312.26±23.41)W,the heat generated is(1610.01±176.24)J,and the temperature rise in the confined space is 254.74 K.The simulation results are basically consistent with the experimental data,which verifies the reliability of the model.
作者
张青松
翟祺悦
赵子恒
ZHANG Qing-song;ZHAI Qi-yue;ZHAO Zi-heng(Key Laboratory of Civil Aviation Thermal Disaster Prevention and Emergency,Civil Aviation University of China,Tianjin 300300,China)
出处
《消防科学与技术》
CAS
北大核心
2021年第12期1711-1714,共4页
Fire Science and Technology
基金
国家自然科学基金民航联合基金重点支持项目(U2033204)。
