锂离子蓄电池电源在煤矿井下应用的安全性分析
Safety analysis of lithium-ion battery power supply applied in coal mine underground
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摘要: 目的:探究锂离子蓄电池电源在煤矿井下应用的安全性。方法:选用100A·h的矿用锰酸锂蓄电池,模拟煤矿井下的环境特性,对该矿用锰酸锂蓄电池电源实施安全性测试。通过针刺测试模拟煤矿井下环境中潜在的机械冲击,用尖锐物体刺入电池,观察电池在极端条件下的反应。为了准确模拟煤矿井下的高温环境,实施炉箱加热测试。通过实施过充电试验模拟煤矿井下可能出现的过充状态,评估电池在过充状态下的性能表现和安全性。结果:电池被针刺穿后,表面出现一定变形和破裂,未发生危险情况。电池在炉箱加热后显著膨胀,伴随有气体泄漏的现象,尚未引发爆炸或燃烧。在过充电试验后,触发了电池的燃烧事件。结论:锂离子蓄电池电源在煤矿井下应用中具有一定的热稳定性。在煤矿井下应用中,必须严格控制电池的工作温度,避免超过其安全操作温度范围。应采取措施监测煤矿井下锂离子蓄电池电源的过充问题。Abstract: Objective: To explore the safety of lithium-ion battery power supply in underground coal mines. Method: A 100A · h mining lithium manganese oxide battery was selected to simulate the environmental characteristics of the coal mine underground, and safety testing was carried out on the power supply of the mining lithium manganese oxide battery. Simulate potential mechanical impacts in the underground environment of coal mines through needle puncture testing, and observe the battery's response under extreme conditions by piercing a sharp object into the battery. In order to accurately simulate the high-temperature environment underground in coal mines, furnace box heating tests are carried out. By conducting overcharging tests to simulate possible overcharging conditions in coal mines, evaluate the performance and safety of batteries under overcharging conditions. Result: After being punctured, the surface of the battery showed certain deformation and rupture, and no dangerous situation occurred. The battery significantly expands after heating in the furnace, accompanied by gas leakage, and has not yet caused explosion or combustion. After the overcharging test, a burning event of the battery was triggered. Conclusion: Lithium ion battery power supply has certain thermal stability in underground coal mine applications. In underground coal mine applications, it is necessary to strictly control the working temperature of the battery to avoid exceeding its safe operating temperature range. Measu
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