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Pouch-type battery, and apparatus and method for sealing pouch-type battery

A sealing device and battery assembly technology, which can be used in large-sized batteries/batteries, small-sized batteries/batteries, sealing materials, etc., and can solve problems such as electrolyte interference and diaphragm adhesion.

Inactive Publication Date: 2014-09-24
SK INNOVATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] As a result, there is a problem that the sealing part and the separator inside the pouch are bonded due to the interference of the electrolyte solution by the extruded sealing part.

Method used

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  • Pouch-type battery, and apparatus and method for sealing pouch-type battery
  • Pouch-type battery, and apparatus and method for sealing pouch-type battery

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Embodiment Construction

[0029] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. What needs to be explained before this is that the terms or words used in this specification and claims should not be limited to the usual or dictionary meanings for interpretation, but should be based on the inventor's ability to properly describe the invention in the best possible way. The principle of defining terms and concepts should be interpreted with meanings and concepts consistent with the technical idea of ​​the present invention.

[0030] Therefore, the embodiments described in this specification and the structures shown in the drawings are only the best embodiments of the present invention, and do not represent all technical ideas of the present invention. Therefore, it should be understood that there are various alternatives based on this application. Equivalents and modified examples of the above-described embodiments.

[0...

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Abstract

The present invention relates to an apparatus and method for sealing a pouch-type battery. The sealing apparatus comprises a sealing tool disposed on the upper and lower portions of a sealing part of a pouch, wherein the sealing tool is disposed to seal the pouch such that there is difference in the thickness of the sealing part. As described above, since the sealing part has a different thickness, the sealing part made of polypropylene and the like can be prevented from being pushed into the pouch.

Description

technical field [0001] The invention relates to a pouch battery and a pouch battery sealing device and sealing method for placing a battery assembly including a negative electrode, a separator, and a positive electrode in a pouch packaging material, injecting an electrolyte solution and sealing the edges thereof. Background technique [0002] In general pouch-type batteries, a battery assembly including a negative electrode, a separator, and a positive electrode is placed in a pouch-shaped packaging material, and the edges are sealed after the electrolyte is injected. [0003] That is, sealing tools are arranged above and below the sealing portion along the edge of the bag, and the sealing portion is pressed, and pressure and heat are applied to achieve sealing. [0004] However, conventional sealing methods for pouch-type batteries have the following problems. [0005] When the sealing portion is sealed, the sealing portion is sealed with a constant thickness, so the pheno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/08H01M2/02H01M50/186H01M50/193
CPCH01M10/04H01M2/02H01M10/049H01M10/0404H01M2/08H01M2/021H01M2/06H01M2/0275H01M50/193H01M50/186Y02E60/10Y02P70/50H01M50/105
Inventor 孔明哲
Owner SK INNOVATION CO LTD
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