Fireproof and explosion-proof box for lithium battery charging

Abstract

The lithium battery charging fireproof and explosion-proof box comprises a box body, an opening and closing door is rotationally arranged on the box body, the opening and closing door is connected with the box body through a door holder device, and a containing cavity is defined between the opening and closing door and the box body; the separation net is arranged in the box body and divides the accommodating cavity into an upper part and a lower part; wherein the lower accommodating cavity is used for placing a lithium battery, and a fire extinguishing bag is placed in the upper accommodating cavity; the whistle is arranged on the side wall of the box body, the whistle opening end of the whistle is located in the box body, and the generating end of the whistle is located outside the box body. The explosion-proof box body is composed of the fireproof box body, the net-shaped separation net, the fire extinguishing bag and the whistle, the effects of isolation and explosion prevention can be achieved when a lithium battery is charged and breaks out of fire, rapid fire extinguishing is conducted, and personal and property losses caused by fire overflow are avoided; meanwhile, when a fire breaks out in the box, a whistle can be blown due to the change of air pressure, an automatic alarm function is achieved, and in the scheme, all composition materials are low in cost, high in durability and convenient to widely use.

Description

technical field [0001] The invention specifically refers to a fireproof and explosion-proof box for charging lithium batteries. Background technique [0002] After the lithium battery cell is overcharged to a voltage higher than 4.2V, side effects will begin to occur. The higher the overcharge voltage, the higher the risk. When the voltage of the lithium cell is higher than 4.2V, the number of lithium atoms remaining in the positive electrode material is less than half, and the storage cell often collapses at this time, causing permanent capacity loss of the battery. If charging is continued, since the storage cell of the negative electrode is already full of lithium atoms, subsequent lithium metal will accumulate on the surface of the negative electrode material. These lithium atoms will grow dendrites from the surface of the negative electrode in the direction of the lithium ions. These lithium metal crystals pass through the separator, shorting the positive and negativ...

AI Technical Summary

Problems solved by technology

[0003] Lithium battery explosion incidents are frequent around the world, and lithium battery charging has a greater safety risk during use, posing a threat to personal property

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