基于实体火试验的新能源轿车库防火设计问题探讨
Discussion on fire protection design of new energy car storage based on real fire test
尹亮 1张良 1刘激扬 2王宗存 1鲁志宝 1叶继红 3魏瑞超 4陈伟3
作者信息
- 1. 应急管理部天津消防研究所,天津 300381;工业与公共建筑火灾防控技术应急管理部重点实验室,天津 300381;天津市消防安全技术重点实验室,天津 300381
- 2. 国家消防救援局,北京 100054
- 3. 中国矿业大学,江苏 徐州 221116
- 4. 深圳市职业技术大学,广东深圳 518038
- 折叠
摘要
新能源汽车产业发展迅猛,对完善汽车库防火设计提出新需求.对典型的建筑内新能源轿车火灾进行案例剖析,开展首例单库存新能源轿车实体火试验并探讨车库防火设计对策要点.研究结果表明:电池包热失控挥发灰色可燃气体但持续时间不等且库内受限空间易发生爆燃;库内空间壁面热反馈可能加速车体燃烧;试验轿车猛烈燃烧阶段持续时间占总燃烧时间约 20%.建议新能源汽车库防火设计注重早期热失控征兆探测和后期燃烧范围控制及被动安全技术措施,库内设置带有拾音功能的摄录装置及耐火极限不低于2.00 h的分隔构件.
Abstract
The rapid development of new energy automobile in-dustry puts forward new demand for fire protection design of auto-mobile garage.In this article,cases of typical new energy car fires in buildings are analyzed,the first real fire test of new energy cars in storage is carried out,and measures for fire protection design of garages are discussed.The findings show that:the thermal run-away of the battery pack volatilizes gray combustible gases but the duration varies and explosive combustion is easy to occur in the garage.The thermal feedback from the inner wall of the garage is likely to accelerate the combustion of the car body,and the dura-tion of the strong combustion stage lasts for about 20%of the to-tal combustion time.It is suggested that the fire prevention design of new energy automobile garage should focus on the detection of earlier signs of thermal runaway and the control of later combus-tion extent as well as the adoption of passive safety technology measures,and the garage should be installed with the recording device with sound pickup function and the separating elements with the fire-resistance rate not less than 2.00 h.
关键词
新能源汽车/汽车库/实体火试验/锂离子电池/防火设计Key words
new energy vehicles/automobile garage/real fire ex-periment/lithium-ion battery/fire protection design引用本文复制引用
基金项目
应急管理部消防救援局应用创新项目(2022XFCX24)
应急管理部消防救援局应用创新项目(2023XFCX18)
应急管理部天津消防研究所基科费项目(2021SJ07)
出版年
2024
NETL
NSTL
万方数据