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Cover-cap for cylindrical battery and cylindrical battery

A technology for cylindrical batteries and caps, which is applied to battery pack components, circuits, electrical components, etc., can solve the problems of increasing the proportion of scrapped or defective products, excessive liquid injection, and less liquid injection, so as to reduce the proportion of scrapped and defective products, The effect of extending the service life

Inactive Publication Date: 2014-12-24
YIYANG CORUN BATTERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the production process, due to the instability of the equipment, there will often be excessive liquid injection, insufficient liquid injection or even no liquid injection, especially for high-capacity batteries. This situation will increase the proportion of scrapped or defective products in the production process. Increased manufacturing costs to a certain extent

Method used

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  • Cover-cap for cylindrical battery and cylindrical battery
  • Cover-cap for cylindrical battery and cylindrical battery
  • Cover-cap for cylindrical battery and cylindrical battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A cap for a cylindrical battery, such as figure 1 , figure 2 As shown, it includes an upper cap 1, a lower cover 2, and an explosion-proof ball 3. The upper cap 1 and the lower cover 2 are tightly combined. An air vent 4 is provided on the side of the upper cap 1, and a vent hole 4 is provided in the center of the lower cover. Explosion-proof holes 5, an accommodation space 6 is formed between the upper cap 1 and the lower cover 2, the explosion-proof ball 3 is placed in the accommodation space 6, and a liquid injection hole 7 with a circular cross section is arranged on the side of the lower cover 2, and the injection The liquid hole 7 and the liquid injection valve 8 are tightly matched and closed in a spiral manner. The partial enlarged picture of the liquid injection valve 8 is shown in image 3 shown.

Embodiment 2

[0018] A cylindrical battery cap, the structure of which is similar to the cylindrical battery cap of Example 1, the difference is that two air vents are arranged symmetrically on the side of the upper cap, and symmetrically arranged on the side of the lower cap. There are two injection holes that are circular in cross section.

Embodiment 3

[0020] A cylindrical battery, in which an electric core is placed in the casing, an electrolyte is injected, and a cap is used for sealing the cap. The cap for the cylindrical battery in Example 1 is used as the cap.

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Abstract

The invention provides a cover-cap for a cylindrical battery, which comprises an upper cap, a lower cover and an anti-explosion ball, wherein the upper cap and the lower cover are tightly combined together, at least one exhaust vent is formed in a side edge of the upper cap, an anti-explosion hole is formed in the center of the lower cover, an accommodating space is formed between the upper cap and the lower cover, the anti-explosion ball is arranged in the accommodating space, at least one electrolyte injection hole is formed in a side edge of the lower cover, and the electrolyte injection hole is tightly matched with an electrolyte injection valve to be sealed. The invention further provides the cylindrical battery using the cover-cap. The cover-cap provided by the invention has the advantages that an electrolyte can be added according to the situation through the electrolyte injection hole in the lower cover of the cover-cap, the battery electrolyte injection defect rate is lowered and the scrappage is reduced; after the battery is used after a period of time, the electrolyte injection valve on the electrolyte injection hole is opened for an electrolyte supplement, the internal voltage of the battery is lowered, and the service life of the battery is prolonged.

Description

technical field [0001] The invention relates to a cylindrical battery cap and a cylindrical battery. Background technique [0002] In the production process, due to the instability of the equipment, there will often be excessive liquid injection, less liquid injection or even no liquid injection, especially for high-capacity batteries. This situation will increase the proportion of scrapped or defective products in the production process. Increased the manufacturing cost of production to a certain extent. In addition, nickel-metal hydride batteries are designed in a poor liquid state when they are designed. After a large amount of anatomical analysis data, it is found that the end of life of most batteries is not due to the failure of the positive electrode, negative electrode or diaphragm of the battery, but the electrolyte and positive electrode inside the battery. Oxidation reaction occurred on the negative electrode or diaphragm, or the gas generated during the cycle wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/04H01M2/36
CPCH01M50/152H01M50/60H01M50/691Y02E60/10
Inventor 周才华罗艳红杨书胜周建明
Owner YIYANG CORUN BATTERY
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