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Sealed type battery with its electrolyte pouring opening easily to be sealed

A technology for sealing batteries and injection holes, which is applied to battery pack components, circuits, electrical components, etc., and can solve problems such as difficult control of sealing plugs, difficulty in battery manufacturing, and difficulty in inserting injection holes

Inactive Publication Date: 2005-04-27
SANYO ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to keep the size of the injection hole small, the sealing plug sealing the injection hole is made small, which makes the sealing plug difficult to control during manufacture and difficult to insert into the injection hole
This also poses a battery manufacturing problem

Method used

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  • Sealed type battery with its electrolyte pouring opening easily to be sealed
  • Sealed type battery with its electrolyte pouring opening easily to be sealed
  • Sealed type battery with its electrolyte pouring opening easily to be sealed

Examples

Experimental program
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Effect test

example

[0095] A rectangular sealed battery was manufactured according to the above-mentioned embodiment, the battery was 48 mm high, 30 mm wide, and 10 mm thick.

[0096] The sealing plate 31 is made of a 0.8 mm thick aluminum alloy plate, and the diameter of the injection hole 34 is 1.6 mm.

[0097] The dimensions of the sealing plug 35 are as Figure 5A As shown, its total height is 1.8 mm, the pressing plate 351 is 4.3 mm wide and 0.4 mm thick, the diameter of the widest part of the central column 352a of the protrusion 352 is 1.7 mm, and the diameter of the base 352b is 2.2 mm.

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Abstract

A sealed battery has a generator element enclosed within an external casing (10). An opening in the external casing is covered by a closure cap (30) in which an injection hole (34) for injecting electrolyte is provided. The injection hole (34) is sealed using a sealing plug (35) which is composed of a support member (352) that is fixed on a surface of the closure cap (320) so as to cover the injection hole (34) and a plugging member that is at least partially formed of an elastic material and is supported by the support member so as to plug the injection hole (34). The plugging member is formed of an elastic material and is pressed into the injection hole by the support member. As a result, an airtight seal can be easily and securely achieved for the injection hole. The support member can be made large to facilitate handling, thereby reducing the likelihood of the sealing plug being improperly supplied during attachment to the injection hole (34).

Description

[0001] This application is based on the Japanese Patent Application No. 11-71864, and the content of the Japanese application is incorporated herein by reference. Technical field [0002] The present invention relates to a sealed battery, in particular to a battery manufacturing method. A sealing plate is provided in the opening of the battery casing, and the injection hole provided in the sealing plate enables the electrolyte to be sealed with a sealing plug to be injected. Background technique [0003] In recent years, sealed batteries have also been widely used as power sources for portable electronic devices such as mobile phones, audio-visual equipment, and computers. Representative sealed batteries include alkaline batteries, such as nickel-hydrogen storage batteries, and nickel-chromium storage batteries, and lithium-ion batteries. [0004] Two widely used batteries are cylindrical and rectangular sealed batteries. When rectangular batteries are used in portable devices, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/21H01M50/645
CPCH01M2/365H01M2/0217Y02E60/12H01M2/361Y10T29/4911Y02E60/10H01M50/103H01M50/645H01M50/15
Inventor 宫崎德之山内康弘
Owner SANYO ELECTRIC CO LTD