Lithium-ion battery pack fires pose great hazards to the safety and health of miners. A detailed experimental study has been conducted at the National Institute for Occupational Safety and Health (NIOSH) Pittsburgh Mining Research Division (PMRD) to investigate the effectiveness of different fire suppression systems on Li-ion battery pack fire extinguishment. Tests were conducted in a well-ventilated container. Two sizes of battery packs (12 V, 24 V) were heated by heater strips to trigger thermal runaway and fire. Water mist with different flow rates, ABC powder, type D dry chemical, and water mist with F500 additives were used as the fire suppression agents. Multiple thermocouples were installed on the battery packs to measure the temperature evolution during the tests. The results indicated that the water mist with F500 additives is the most effective suppressant among the agents tested. Dry chemicals, however, do quench the fire for a moment, but cannot prevent re-ignition of the battery since they do not provide enough cooling. The findings of this paper can be used to develop safer battery fire suppression techniques in mining environments.

锂离子电池组起火对矿工的安全和健康构成极大危害。美国国家职业安全与健康研究所 (NIOSH) 匹兹堡矿业研究部 (PMRD) 进行了一项详细的实验研究，以调查不同灭火系统对锂离子电池组灭火的有效性。测试在通风良好的容器中进行。两种尺寸的电池组（12 V、24 V）被加热带加热，引发热失控和火灾。采用不同流量的细水雾、ABC干粉、D型干粉和含有F500添加剂的细水雾作为灭火剂。电池组上安装了多个热电偶，以测量测试期间的温度变化。结果表明，在所测试的灭火剂中，含有 F500 添加剂的细水雾是最有效的灭火剂。然而，干粉确实可以暂时熄灭火势，但不能阻止电池重新点燃，因为它们不能提供足够的冷却。本文的发现可用于开发采矿环境中更安全的电池灭火技术。