Explosion-proof housing of battery

An explosion-proof shell and battery technology, which is applied in the direction of battery box/coat, battery cover/end cover, battery pack parts, etc., can solve the problem of easy leakage of explosion-proof cap

Inactive Publication Date: 2016-09-28
朱春梅
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, if the internal temperature of the battery has reached the state of thermal runaway, the internal pressure of the battery will continue to rise, the explosion-proof film

Method used

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  • Explosion-proof housing of battery
  • Explosion-proof housing of battery
  • Explosion-proof housing of battery

Examples

Experimental program
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Effect test

Embodiment 1

[0011] Such as figure 1 , figure 2 As shown, the structure of the present invention includes: a combined battery explosion-proof cover and an explosion-proof steel shell 31, the combined battery explosion-proof cover is stamped and fixed on the explosion-proof steel shell 3, and its opening pressure is tested to be 1.9-2.5Mpa, which conforms to Industry requirements; the assembled battery explosion-proof cover includes a sealing ring 5, a top cover 1, an explosion-proof disk 2, an insulating ring 3, and an orifice plate 4; the top cover 1 is a round iron sheet with a raised structure in the middle, so There are 3 air holes evenly distributed on the side of the convex structure; the explosion-proof disc 2 is a circular aluminum sheet, and the middle of one side has a cylindrical protrusion 22, and the cylindrical protrusion 22 has a tapered protrusion 23. , There is an annular groove 21 between the outer ring of the cylindrical protrusion 22 and the outer ring 24 of the explosio...

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PUM

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Abstract

The invention discloses an explosion-proof housing of a battery. The explosion-proof housing comprises a combined battery explosion-proof cover and an explosion-proof steel shell, wherein the combined battery explosion-proof cover is pressed into the upper part of the explosion-proof steel shell; the combined battery explosion-proof cover comprises a seal ring, a head cover, an explosion-proof sheet, an insulating ring and a pore plate; the head cover is clamped into one surface of the explosion-proof sheet; a cylindrical bump structure is arranged on the other surface of the explosion-proof cover; a conical bump is also arranged on the top part of the bump structure; a groove is formed between the cylindrical bump and an outer ring of the explosion-proof sheet; the insulating ring is located on the outer ring of the bump structure; the pore plate covers the insulating ring and is welded with the conical bump of the explosion-proof cover; and the explosion-proof sheet is arranged into the seal ring and is fixed to the seal ring through gel. Due to the design of the groove in the explosion-proof sheet, the explosion-proof sheet can be better combined with the seal ring; the probability of battery leakage is significantly reduced; and the explosion-proof housing of the battery has a technical progress in the field.

Description

Technical field [0001] The invention relates to the field of batteries, in particular to a battery explosion-proof casing with good explosion-proof performance and liquid leakage prevention. Background technique [0002] At present, lithium batteries are usually used in multiple series and parallel combinations. Therefore, the total energy of the battery is relatively large. During the charging process, there is a hidden danger of overcharge of a single battery or overcharge of the entire battery pack. When the lithium battery is overcharged, the battery The voltage rises rapidly with the increase of polarization, which will cause irreversible changes in the structure of the positive electrode active material and decomposition of the electrolyte, generating a large amount of gas and releasing a large amount of heat, causing the battery temperature and internal pressure to increase sharply, and there are hidden dangers such as explosion and combustion. The safety of lithium batter...

Claims

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Application Information

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IPC IPC(8): H01M2/02H01M2/04H01M2/08H01M2/12H01M50/143H01M50/147H01M50/184H01M50/30
CPCH01M50/10H01M50/147H01M50/183H01M50/30Y02E60/10
Inventor 朱春梅
Owner 朱春梅
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