Why will the lithium-ion battery exploded?

2022/04/08

  Author :Iflowpower – Portable Power Station Supplier

Lithium-ion battery is a small size and lightweight battery and is still good to operate in the condition of continuing charge and discharge. Although few accidents have occurred, the accidents occurred, or caused fire, resulting in explosion. How does the lithium-ion battery have combustion? For example, after the lithium ion battery occurs inside or external short circuit, it will release a lot of heat in a short time, and the temperature is extremely dramatic, resulting in failure of heat.

Then, this flammable electrolyte will be ignited, eventually leading to the battery to fire or explode. Lithium ion batteries typically contain a metal coil and flammable lithium ion liquid. Tiny metal debris floats in liquid.

The contents of the battery are under pressure, so if a metal fragments pierce a separator that retains the object separated, or the battery is piercing, then the water in lithium and the air acts sharply, sometimes lithium. Ion battery. The lithium ion battery supplies high power output at a minimum weight.

The design of the battery pack is mainly light, which means that the battery and thin housing are a thin partition. The partition and coating are quite fragile, they can be pierced. If the battery is damaged, a short circuit will occur.

A stylish spark can also ignite highly active lithium. Another possibility is that the lithium ion battery or will be heated to the extent of thermal out of control. Here, the heat of the content is applied to the battery, which may cause a lithium ion battery explosion.

Amend the lithium-ion battery to fire or explode, first find the thermal explosion mechanism of the lithium ion battery, the thermal explosion mechanism of the lithium-ion battery is: when the battery is being thermally impacted, overcharged, over, short circuit, vibration, extrusion In the abuse state, the active substance and the electrolytic solution in the battery will chemically and electrochemically, and a large amount of heat and gas have a large amount of heat, causing temperature rise of the battery. If the thermal generation rate of the lithium ion battery is greater than the thermal distortion rate The reaction temperature in the system will continue to rise. When heat and internal pressure are accumulated to a certain extent, it will cause the battery's burning or explosion.

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