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How Is Battery Explosion Proof Aluminum Sheet Market

The battery shell is generally formed by stretching the 3003 aluminum alloy into a can material and stamping the aluminum alloy plate into an explosion-proof shell material sealing combination, sealing the electrolyte, electrodes and other internal structures, and then welding the can material and the explosion-proof shell material.

The material strength of the battery shell is required to be high, especially for the sealed explosion-proof valve shell material, which not only requires high strength after stamping, but also requires good high tensile properties, good high stamping formability, and large welding capacity.

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When the battery is overcharged and the battery is in thermal runaway, the explosion-proof valve in the explosion-proof valve shell material must be stamped into a certain design shape, and the stamped part is locally thinned to reduce the internal pressure.

Battery explosion-proof valves generally use waterproof explosion-proof breathable valves, which are waterproof and dustproof, and breathable, so as to avoid explosions caused by pressure.

At present, explosion-proof caps are generally combined caps, and the main components are: lower base plate + sealing ring + hemispherical aluminum film + PTC + upper cap. Pressure control is mainly borne by the hemispherical aluminum film.

When the internal pressure is too large, the hemispherical aluminum film will bulge upward, the connection point will be disconnected, causing a short circuit, but when the internal pressure continues to increase, it will eventually break through the hemispherical aluminum film to form a pressure relief.

The explosion value of the explosion-proof valve of new energy batteries is usually determined by engineering design, and the specific value will vary according to different battery types and design requirements.

Battery explosion-proof valves generally use 1060 aluminum sheet. Aluminum alloys are easy to process and shape, reduce material waste, and are economical and practical, making them a commonly used raw material for explosion-proof valves.

The key point for selecting explosion-proof battery shell materials is their explosion-proof performance and environmental adaptability. Generally, the following factors should be considered when selecting explosion-proof shell materials:

1. Flame retardancy: Explosion-proof shell materials need to have good flame retardancy, which can prevent the spread of flames when encountering fire sources, and reduce the risk of explosion and fire.

2. Corrosion resistance: In harsh environments such as mines or oil fields, the shell needs to be able to resist the erosion of corrosive substances to maintain the integrity and reliable performance of the battery.

3. Strength and toughness: The shell material needs to have sufficient strength and toughness to withstand external forces such as impact and vibration, and protect the safety of the internal structure of the battery.

Original Source:https://www.autoaluminumsheet.com/a/how-is-battery-explosion-proof-aluminum-sheet-market.html

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