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Method for manufacturing sealed cell

A manufacturing method and a technology of sealing batteries, which are applied to battery pack parts, circuits, electrical components, etc., can solve the problems of difficulty in thinning the battery and increasing the front and rear width of insulating parts, so as to prevent misalignment and reduce labor and time , The effect of reducing the number of parts

Active Publication Date: 2009-10-21
MAXELL HLDG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The front and rear width of the insulator increases accordingly, making it difficult to reduce the thickness of the battery

Method used

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  • Method for manufacturing sealed cell
  • Method for manufacturing sealed cell
  • Method for manufacturing sealed cell

Examples

Experimental program
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Embodiment Construction

[0033] Related to the sealed battery of the present invention such as figure 2 As shown, it includes: a bottomed cylindrical battery can 1 with left and right horizontally long openings on the top; an electrode body 2 and a non-aqueous electrolyte stored in the battery can 1; a laterally long cover 3 ; and an insulator 5 arranged inside the cover 3 . The left and right width of the battery can 1 is 34 mm, the vertical height is 46 mm, and the front and rear thickness is 4 mm. A battery case 6 is formed by the battery can 1 and the cover 3 .

[0034] The electrode body 2 is produced by, for example, helically winding a strip-shaped positive electrode and a strip-shaped negative electrode with a strip-shaped separator inserted therebetween, and is formed into a flat shape in the wound state. The positive electrode is to form a positive electrode active material layer containing a positive electrode active material such as lithium cobaltate on both the front surface and the bac...

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Abstract

The present invention provides a method for manufacturing a sealed cell, capable of reducing labor and time for managing members of an insulated member and a down-lead body, preventing the down-lead body from contacting with an inner surface of a cell tank, and thinning the cell. An insertion throughhole (27) of the down-lead body (13) is cooperated in a matching pin (39) of a mold (35), the down-lead body is embedded between a pair of holding pins (41, 41) of the mold, and the down-lead body is mounted in an inner space of the mold. Then, a melting resin is injected into the inner space of the mold, such that the insulated member (11) covers the front and the back, the left and the right and the top of the down-lead body, such that the insulated member is integrated and formed on the down-lead body. Moreover, a negative terminal (12) is inserted in the throughhole (25) crossing a cover (3) in a mode of the intervention of the sealing member (10), the lower end part of the negative terminal is mounted with the down-lead body together with the insulated member, and the lower side of the down-lead body is connected with a cathode collector down-lead (9) extending from an electrode body (2).

Description

technical field [0001] The present invention relates to inserting the output terminal through the through hole of the cover with the sealing member interposed between the output terminal and the cover, and attaching the lead body to the lower end of the output terminal protruding from the lower side of the cover together with the insulator. A method of manufacturing a sealed battery connected to a current collecting lead extending from an electrode body inside a battery can. Background technique [0002] As sealed batteries, there are, for example, those disclosed in Patent Documents 1 to 3. The sealed battery described in Patent Document 1 is produced by inserting an output terminal through a through-hole formed on a cover that blocks the opening of the battery can with an insulating seal inserted, and inserting an output terminal on the lower side of the cover ( In Patent Document 1 figure 2 A lead body is attached to the lower end of the protruding output terminal along...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/04H01M2/26H01M2/30
CPCY02E60/12Y02E60/10
Inventor 松本佳巳渡边修
Owner MAXELL HLDG LTD
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