|本期目录/Table of Contents|

[1]沈俊杰,王海斌,贺元骅,等.低压环境下不同三元圆柱锂电池热失控危险特性对比研究[J].中国安全生产科学技术,2020,16(6):110-115.[doi:10.11731/j.issn.1673-193x.2020.06.018]
 SHEN Junjie,WANG Haibin,HE Yuanhua,et al.Comparative study on thermal runaway hazardous characteristics of different ternary cylindrical lithium battery under low-pressure environment[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2020,16(6):110-115.[doi:10.11731/j.issn.1673-193x.2020.06.018]
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低压环境下不同三元圆柱锂电池热失控危险特性对比研究
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
16
期数:
2020年6期
页码:
110-115
栏目:
职业安全卫生管理与技术
出版日期:
2020-06-30

文章信息/Info

Title:
Comparative study on thermal runaway hazardous characteristics of different ternary cylindrical lithium battery under low-pressure environment
文章编号:
1673-193X(2020)-06-0110-06
作者:
沈俊杰王海斌贺元骅陈现涛
(中国民用航空飞行学院,四川 广汉 618307)
Author(s):
SHEN Junjie WANG Haibin HE Yuanhua CHEN Xiantao
(Civil Aviation Flight University of China,Guanghan Sichuan 618307,China)
关键词:
航空安全低压环境21700型锂离子电池18650型锂离子电池热失控特性
Keywords:
aviation safety low-pressure environment 21700 lithium-ion battery 18650 lithium-ion battery thermal runaway characteristics
分类号:
X937
DOI:
10.11731/j.issn.1673-193x.2020.06.018
文献标志码:
A
摘要:
为研究21700和18650新旧2型多用途锂离子电池在航空运输低压环境下的热失控特性差异,采用动压变温实验舱搭建实验平台开展实验。将实验环境压力设定为飞机巡航时的环境压力30 kPa,对比常压101 kPa,使用外部热源加热的方式触发锂电池热失控,利用热传播引发相邻电池热失控,分别从热失控温度变化特性、热释放速率和热解气体组分浓度变化进行分析。研究结果表明:能量密度更高的21700电池热失控峰值温度更高,高温危险性要高于18650电池,但触发热失控所需的热量更多,电池间热传播时间会延长;低压环境有利于降低锂电池热失控燃爆峰值温度,减小燃爆热释放速率,但会产生更多CxHy和CO等具有燃爆性的热解气体,可能会在有限空间内与氧气混合引起二次燃爆。
Abstract:
In order to study the difference in the thermal runaway characteristics of two types of multipurpose new and old lithium-ion batteries including 21700 and 18650 lithium-ion battery under the low-pressure environment of air transportation,an experimental platform was set up by using the experiment module with variable pressure and temperature to conduct the experiments.The experimental environment pressure was set to be 30 kPa where the aircrafts are cruising,compared with normal pressure of 101 kPa,the external heat source was used to trigger the thermal runaway of the lithium battery,and the heat propagation was used to cause the thermal runaway of adjacent batteries.The characteristics of thermal runaway temperature change,heat release rate (HRR) and concentration of pyrolysis gas components were mainly analyzed.The results showed that the 21700 battery with higher energy density had a higher thermal runaway peak temperature and a higher hightemperature hazard than the 18650 battery.However,more heat was required to trigger the thermal runaway,so the time of heat propagation between the batteries would be prolonged.The low-pressure environment was beneficial to reduce the thermal runaway blasting peak temperature of lithium battery,decrease the HRR of blasting,but generate more pyrolytic gases with blasting properties such as CxHy and CO,which may cause secondary blasting when mixing with O2 in the confined space.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2020-04-02
* 基金项目: 国家重点研发计划项目(2018YFC0809500);国家自然科学基金项目 (U1633203)
作者简介: 沈俊杰,硕士研究生,主要研究方向为航空锂电池安全。
通信作者: 贺元骅,硕士,教授,主要研究方向为航空安全。
更新日期/Last Update: 2020-07-07