PDF
Full
Outline
In order to clarify inerting effect of liquid nitrogen on the thermal runaway explosion of a 280Ah energy storage lithium battery，based on experiment analysis of composition and explosion limit of battery thermal runaway gas，FLACS was used to simulate explosion overpressure of battery thermal runaway gas in a storage container. Standard experiments and real experiments were carried out to analyze inerting effect of liquid nitrogen on battery thermal runaway gas. Results show that thermal runaway gas explosion overpressure increases gradually with an increase of its volume. Ignition of more than 1.1 m3 of thermal runaway gas can cause serious consequences. A single 280 Ah lithium iron phosphate battery in 100% charged state，heating in a vacuum state，heating in a vacuum state can trigger thermal runaway of the battery and produce 134.6 L of thermal runaway gas with CO2，H2，CO，CH4 and C2H4 as the main components. Thermal runaway gas is a flammable gas，and explosion limit range is between 8.5% and 45.5%. N2 can effectively inert thermal runaway gas and significantly reduce the explosion limit range of thermal runaway gas. Limiting N2 volume fraction is 84.7%. Spray 69 kg liquid nitrogen into a 35 m3 energy storage container to inert battery thermal runaway gas. When volume fraction of N2 is higher than limiting nitrogen volume fraction，battery thermal runaway gas can be effectively inerted，and effective protection time is 2 200 s.
PDF
446
194
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62199257
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
