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Cylindrical secondary battery including adhesive portion including gas generating material

A secondary battery and gas generation technology, applied in the direction of cylindrical shell battery/battery, secondary battery, secondary battery manufacturing, etc., can solve the problem of not proposing the connection between electrode terminals and electrode tabs

Pending Publication Date: 2020-09-01
LG ENERGY SOLUTION LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] However, Patent Document 3 and Patent Document 4 do not propose a solution capable of solving problems occurring in the process of connecting electrode terminals and electrode tabs to each other.

Method used

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  • Cylindrical secondary battery including adhesive portion including gas generating material
  • Cylindrical secondary battery including adhesive portion including gas generating material
  • Cylindrical secondary battery including adhesive portion including gas generating material

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0102] 40% by weight of epoxy resin based on the total weight of the bonded unit as the bonding material, 30% by weight based on the total weight of the bonded unit of silver as the conductive material, and 30% by weight based on the total weight of the bonded unit Lithium carbonate (Li 2 CO 3 ) As a gas generating material, the above-mentioned adhesive material, conductive material, and gas generating material were mixed with NMP, and dried to manufacture a paste-phase adhesive unit.

[0103] The bonded unit thus produced is added to a structure having Figure 4 The shown structure is on the positive electrode tab of the cylindrical secondary battery, and added to the lower end of the cap assembly of the cylindrical secondary battery to realize the electrical connection between the positive electrode tab and the current interruption device. For experimental precision, five secondary batteries were fabricated under the same conditions.

example 2

[0105] A paste-phase bonded unit was fabricated in the same manner as in Example 1, except that 40% by weight of silver was used as the conductive material and 20% by weight of lithium carbonate, and then five cylindrical secondary batteries were fabricated , each cell is added with a bonding unit.

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PUM

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Abstract

The present invention relates to a cylindrical secondary battery configured to have a structure including an adhesive portion containing an adhesive material, a conductive material, and a gas generating material, in order to couple a positive electrode tab of a jelly-roll-type electrode assembly and a cap assembly severing as a positive electrode terminal in a cylindrical secondary battery.

Description

technical field [0001] This application claims the benefit of priority from Korean Patent Application No. 2018-0064172 filed on June 4, 2018, the entire disclosure of which is hereby incorporated by reference herein. [0002] The present invention relates to a cylindrical secondary battery having a bonded unit including a gas generating material, and more particularly to a cylindrical secondary battery configured to have a structure in which a jelly-roll type electrode assembly The positive electrode tab is coupled to the cap assembly through an adhesive unit including an adhesive material, a conductive material, and a gas generating material. Background technique [0003] Secondary batteries that can be charged and discharged and that can be reused have been used as energy sources for portable electronic devices, power tools, electric vehicles, power storage systems, and the like, and demands for high-output and large-capacity secondary batteries have increased. [0004] B...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/34H01M2/12H01M10/04H01M2/04H01M2/26H01M50/147H01M50/533H01M50/574
CPCY02E60/10H01M2200/00H01M50/574H01M10/0587H01M50/3425Y02P70/50H01M50/147H01M50/533H01M50/538H01M50/152H01M10/0431H01M10/0422H01M2200/20H01M2200/10H01M50/531H01M50/394H01M50/578H01M50/536H01M50/572
Inventor 金京旼
Owner LG ENERGY SOLUTION LTD
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