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Method for manufacturing secondary battery and secondary battery

A technology for secondary batteries and battery casings, applied in secondary battery manufacturing, batteries, and final product manufacturing, etc., can solve the problems of secondary battery explosion, performance degradation, explosion, etc., to reduce battery performance degradation, prevent Effects of functional deterioration

Pending Publication Date: 2022-04-12
LG ENERGY SOLUTION LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Here, there is a problem that unnecessary external moisture and air are introduced into the secondary battery during the manufacturing process, resulting in performance deterioration and risk of explosion
In addition, even after manufacture, there is a risk of secondary battery explosion when excessive internal gas is generated

Method used

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  • Method for manufacturing secondary battery and secondary battery
  • Method for manufacturing secondary battery and secondary battery
  • Method for manufacturing secondary battery and secondary battery

Examples

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Embodiment Construction

[0028] The objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description in conjunction with the accompanying drawings. It should be noted that components in the drawings of the present application are given reference numerals with the same reference numerals as far as possible, even if the components are shown in other drawings. Furthermore, the invention may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. In the following description of the present invention, detailed descriptions of related arts that may unnecessarily obscure the gist of the present invention will be omitted.

[0029] figure 1 is a flowchart illustrating a method of manufacturing a secondary battery according to an embodiment of the present invention, figure 2 is a plan view illustrating a state before an electrode assembly is housed in a house step in a method of manuf...

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Abstract

The invention relates to a method for manufacturing a secondary battery and the secondary battery. The method of manufacturing a secondary battery includes: an accommodating step of accommodating an electrode assembly in an accommodating portion of a battery case; a Vent Membrane mounting step of mounting a Vent Membrane on a discharge hole penetrating through the inside and the outside of the battery case in the battery case; and a case sealing step of sealing the battery case, in which the gas permeable membrane only allows gas to pass through the discharge hole of the battery case, but blocks liquid.

Description

technical field [0001] Cross References to Related Applications [0002] This application claims the benefit of priority from Korean Patent Application No. 10-2019-0117066 filed on September 23, 2019, which is hereby incorporated by reference in its entirety. technical field [0003] The invention relates to a method for manufacturing a secondary battery and the secondary battery. Background technique [0004] Unlike primary batteries, secondary batteries are rechargeable and have a high possibility of compact size and high capacity. Thus, many studies on secondary batteries are recently being conducted. With the development of technology and the increase in demand for mobile devices, the demand for secondary batteries as energy sources is rapidly increasing. [0005] Rechargeable batteries are classified into coin type batteries, cylindrical type batteries, prismatic type batteries, and pouch type batteries according to the shape of the battery case. In such a seco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M50/392H01M10/04H01M50/30
CPCY02E60/10Y02P70/50H01M50/105H01M50/394H01M50/317H01M2200/20H01M50/46H01M10/049H01M10/0583H01M10/446
Inventor 崔淳柱李恩周金锡九李知垠柳志勳
Owner LG ENERGY SOLUTION LTD
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