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Pouch-shaped case, battery cell, and battery cell manufacturing method

A technology for battery cells and manufacturing methods, applied in secondary battery manufacturing, batteries, electrical components, etc., which can solve the problems of easy discharge to the outside, easy to be compressed, easy discharge of electrolyte to the outside, and achieve the effect of increasing the pressure

Active Publication Date: 2017-05-03
LG ENERGY SOLUTION LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, in the conventional pouch-shaped battery cell 10, after injecting the electrolytic solution into the inside of the pouch-shaped case 20, the battery cell 10 is inserted into a vacuum chamber (not shown) to perform an impregnation process. The bag-shaped case 20 is compressed by the internal pressure, and the electrolytic solution injected into the bag-shaped case 20 is easily discharged to the outside through the injection part 23
[0012] In addition, since the injection portion 23 of the bag-shaped case 20 is formed vertically and long, it is easy to be compressed due to the internal pressure of the vacuum chamber, and the electrolytic solution is easy to be discharged to the outside.

Method used

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  • Pouch-shaped case, battery cell, and battery cell manufacturing method
  • Pouch-shaped case, battery cell, and battery cell manufacturing method
  • Pouch-shaped case, battery cell, and battery cell manufacturing method

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Embodiment Construction

[0036] The pouch-shaped case of the present invention has a structure including an injection part for injecting an electrolytic solution, and the above-mentioned injection part is formed into a zigzag shape, thereby preventing the electrolytic solution from leaking to the outside by increasing the strength of the injection part and increasing the contact area. discharge.

[0037] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those skilled in the art to which the present invention pertains can easily implement. However, the present invention can be embodied in various forms, and is not limited to the embodiments described here. In addition, in the drawings, in order to clearly describe the present invention, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

[0038] [Pouch-shaped case of an embodiment of ...

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Abstract

The present invention relates to a pouch-shaped case, which includes: a pouch-shaped main body having an inner space for accommodating an electrode assembly; It is folded into a Z shape.

Description

technical field [0001] The present invention relates to a bag-shaped case having an electrolytic solution injection portion wrinkled into a Z-shape, a battery cell including the bag-shaped case, and a method for manufacturing the battery cell. Background technique [0002] Generally, batteries use chemical or physical reactions to obtain electrical energy, and such chemical batteries are divided into primary batteries and secondary batteries. That is, batteries that are used once and then thrown away, such as manganese batteries, alkaline batteries, and mercury batteries, are called primary batteries, and batteries that can be recharged after running out of power, such as rechargeable batteries and lead storage batteries, are called primary batteries. secondary battery. [0003] Recently, with the popularization of portable electronic devices such as mobile phones, PDAs, smartphones, and notebook computers, technical development of secondary batteries that can be used for a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/04H01M2/02H01M2/36H01M50/618H01M50/636
CPCH01M2220/30H01M50/636H01M50/618Y10T29/4911Y02E60/10Y02P70/50H01M50/627H01M50/105H01M50/124H01M10/647
Inventor 沈洪奭金世贤金旻修禹正圭
Owner LG ENERGY SOLUTION LTD