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Enclosed cell

A sealed, battery technology, used in battery pack parts, battery box/jacket, battery box/cover material, etc., can solve problems such as insufficient avoidance of heat

Inactive Publication Date: 2003-07-09
ENVISION AESC ENERGY DEVICES LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, after forming the electrode terminals, when the seal is formed by laser welding with the battery can, there is still a disadvantage that the influence of heat cannot be sufficiently avoided.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] On the tip of the battery with a long side of 29 mm and a short side of 5 mm, a cylindrical portion with an inner size of 3.5 mm×0.5 mm and a height of 1 mm was formed toward the outside of the battery.

[0061] The joint of the battery element is processed into a shape consistent with the shape of the cylindrical part provided on the top end of the battery, and after penetrating the cylindrical part, the top end of the battery is installed in the battery can, and the junction of the battery can and the top end of the battery is lasered welding.

[0062] Next, after inserting the insulating member made of thermoplastic fluororesin that insulates the inner surface of the cylindrical portion from the joint, the cylindrical portion is crimped with a crimping tool, the cylindrical portion is sealed, and the electrolyte solution is injected from the electrolyte solution injection port. The injection port is sealed.

[0063] The obtained battery has very good airtightness, a...

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PUM

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Abstract

The invention provides a closed type battery wherein there is no need of joining a tab joined to a battery element and an external circuit connection lead to an electrode terminal provided on a battery can via an insulating member. After the battery element is received in the battery can, a tab joined to the battery element is inserted through a tab sleeve formed integrally with a metal sheet of the battery header. In this state, the battery header is attached over an opening in the battery can, and the junction of the battery header and the battery can is sealed up by laser welding. Finally, an insulating member is inserted over the inside surface of the sleeve, which is then caulked.

Description

technical field [0001] The present invention relates to a sealed battery using a metal can as packaging material, in particular to a sealed battery with different polarity electrode connection terminals in the battery can. Background technique [0002] Lithium-ion batteries and the like used as power sources for portable devices use flexible members such as battery cans and synthetic resin films as packaging materials. Batteries using battery cans are widely used due to their strong resistance to external impact and good sealing properties. [0003] In a battery using a battery can, the battery can is used as an electrode terminal of one polarity, and the other electrode terminal is formed on the packaging material through an insulating member, and is generally formed on the top of the battery mounted on the opening portion of the battery can through an insulating member. superior. [0004] After loading the battery components into the battery can with this structure, use ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/05H01M10/058H01M50/119H01M50/176H01M50/553
CPCH01M2/30H01M2/0426H01M2/0217H01M2/0285H01M2/06Y02E60/10H01M50/103H01M50/169Y02P70/50H01M50/553H01M50/176H01M50/119
Inventor 大角哲博
Owner ENVISION AESC ENERGY DEVICES LTD