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Covering board component

A cover plate and component technology, which is applied to battery pack parts, structural parts, electrical components, etc., can solve the problems that the explosion-proof cover plate cannot be used with batteries and does not have safety devices, so as to achieve good sealing, convenient adjustment, and convenient processing and manufacturing Effect

Inactive Publication Date: 2008-04-30
ZHENGZHOU BAK BATTERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the wall thickness of the battery container is limited, it is not suitable to use mechanical flanging to seal the battery made of aluminum or aluminum alloy with low mechanical strength. Therefore, the above explosion-proof cover cannot be applied to batteries with soft battery containers.
[0009] Due to the above reasons, at present, batteries with low mechanical strength of the battery container do not use mechanical flange sealing, but welding sealing, and no safety device is installed on the cover plate assembly of this battery

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Embodiment 1. A cover plate assembly combined with Figure 2-4 with Figure 10As shown, it includes an assembly seat 17 , a cover plate 15 , an insulator 11 , an explosion-proof membrane 8 and a pull plate 5 . The assembly seat 17 is an assembly plate. The assembly plate 17 has a cover plate hole 19 , and around the cover plate hole 19 there is a cylinder 25 extending upwards, and a cavity 28 communicating up and down is formed in the cylinder 25 . There is an annular table top 18 around the cover plate hole 19 in the cylinder, and the upper part of the cylinder 25 forms an annular sealing groove 29 on the inner wall of the cavity 28 of the assembly seat 17 by bending inwardly (bending portion 16 ). There is a pressure relief hole 14 on the cover plate 15 as the electrode of the drawn current, the periphery of the cover plate 15 is insulated by the insulator 11 and sealed and fixed in the annular sealing groove 29, the cover plate 15 protrudes outwards to form a cavity...

Embodiment 2

[0052] Embodiment 2, another cover assembly, combined with Figure 5 with Figure 10 As shown, it includes an assembly seat 17 , a cover plate 15 , an insulator 11 , an explosion-proof membrane 8 and a pull plate 5 . The assembly seat 17 is an assembly plate. The assembly plate 17 has a cover plate hole 19 , and around the cover plate hole 19 there is a cylinder 25 extending upwards, and a cavity 28 communicating up and down is formed in the cylinder 25 . There is an annular table top 18 around the cover plate hole 19 in the cylinder, and the upper part of the cylinder 25 forms an annular sealing groove 29 on the inner wall of the cavity 28 of the assembly seat 17 by bending inwardly (bending portion 16 ). There is a pressure relief hole 14 on the cover plate 15 as the electrode for extracting the current. The peripheral edge of the explosion-proof membrane 8 and the peripheral edge of the cover plate 15 are clamped and fixed in the annular sealing groove 29 by overlapping, p...

Embodiment 3

[0053] Embodiment 3, yet another cover plate assembly, combined with Image 6 with Figure 11 As shown, it includes an assembly seat 17 , a cover plate 15 , an insulator 11 , an explosion-proof membrane 8 and a pull plate 5 . The assembly seat 17 is an assembly plate. The assembly plate 17 has a cover plate hole 19 . Around the cover plate hole 19 there is a cylinder 25 extending downward, and a cavity 28 communicating up and down is formed in the cylinder 25 . There is an annular table top 18 around the cover plate hole 19 in the cylinder, and the lower part of the cylinder 25 forms an annular sealing groove 29 on the inner wall of the cavity 28 of the assembly seat 17 by bending inwardly (bending portion 16 ). There is a pressure relief hole 14 on the cover plate 15 as the electrode for extracting the current. The peripheral edge of the explosion-proof membrane 8 and the peripheral edge of the cover plate 15 are clamped and fixed in the annular sealing groove 29 by overlapp...

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Abstract

A cover plate assembly including a cover plate (15), an insulation element (11), an explosion-proof diaphragm (8), a pulling plate(5) and an assembling base (17), in which a chamber(28) communicated from upside to downside is provided on the assembling base (17), the cover plate(15) and the explosion-proof diaphragm(8) are insulated and fixed hermetcally inside the chamber(28) by the insulation element(11), and the cover plate(15) and the explosion-proof membrane(8) are connected electrically each other to form a decompression room(13),and the explosion-proof diaphragm(8) is electrically connected to the pulling plate (5) beneath thereof which is supported against on the assembling base (17) and is insulated from the assembling base (17) via the insulation element (11), so that the explosion-proof diaphragm(8) is broken and disconnect to the pulling plate(5) when the press applied to it is higher than a setting value. A battery using the above stated explosion-proof cover plate assembly is provided.

Description

technical field [0001] The present invention relates to battery cover assemblies. Background technique [0002] With the rapid development of electronic equipment such as audio equipment, camera equipment, and personal computers in the direction of portability and mobility, high-capacity non-hydrolyzed secondary batteries represented by various alkaline batteries and lithium secondary batteries have become these The first choice for driving power of electronic equipment. [0003] Because this kind of high-capacity battery is sealed in a closed container, when the charger is overcharged or misused, abnormal gas will often be generated inside the battery. The accumulation of abnormal gas will cause excessive pressure inside the battery, resulting in There is a danger of injury to electronic equipment or persons due to battery rupture. [0004] Therefore, in order to prevent such accidents, this type of battery has been equipped so far when the internal pressure of the batter...

Claims

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Application Information

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IPC IPC(8): H01M2/04H01M2/12H01M50/143H01M50/147H01M50/342H01M50/593
CPCH01M2/1241Y02E60/12H01M2/0404Y02E60/10H01M50/147H01M50/3425H01M50/593
Inventor 毛焕宇
Owner ZHENGZHOU BAK BATTERY CO LTD
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