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Flexible package battery packaging process

A flexible packaging battery and packaging process technology, applied in the field of lithium-ion batteries, can solve problems such as defects and damage processing, and achieve the effects of improving the good rate, improving the defects, and improving the damage.

Pending Publication Date: 2021-05-07
TIANJIN ENERGIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the present invention aims to propose a soft packaging battery packaging process to avoid problems such as pollution, damage or poor processing of the tabs during the processing of the manufacturer, and to improve the aging of the tabs caused by secondary heating during the production of the battery cell. question

Method used

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  • Flexible package battery packaging process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] 1. Cut the coated pole piece into a specified size of 300mm*250mm with a die cutter, and cut the reserved part of the tab into the same size as the copper metal strip 1 after the lamination process;

[0042] 2. The metal strip 1 of a dense Cu-sodium formate coordination layer is obtained by copper surface treatment, and the pole piece is welded together to form the tab metal strip 1;

[0043] 3. Put the tab metal strip 1 and the aluminum-plastic film 2 into the tooling mold and fix them, use the high-frequency electromagnetic heating process to heat and seal the tab metal strip 1 and the aluminum-plastic film 2, and set a fixed pressure when heating and packaging, so that the pole The air between the ear metal strip 1 and the aluminum-plastic film 2 is exhausted, the temperature of the heating package is 170°C, and the given pressure value is 0.5mpa. The entire process takes 5.8 seconds to complete.

[0044] 4. The tab metal strip 1 and the aluminum-plastic film 2 are h...

Embodiment 2

[0047] 1. Cut the coated pole piece into a specified size of 300mm*250mm with a die cutter, and cut the reserved part of the tab into the same size as the copper metal strip 1 after the lamination process;

[0048] 2. The metal strip 1 of a dense Cu-sodium formate coordination layer is obtained by copper surface treatment, and the pole piece is welded together to form the tab metal strip 1;

[0049] 3. Put the tab metal strip 1 and the aluminum-plastic film 2 into the tooling mold and fix them, use the high-frequency electromagnetic heating process to heat and seal the tab metal strip 1 and the aluminum-plastic film 2, and set a fixed pressure when heating and packaging, so that the pole The air between the ear metal strip 1 and the aluminum-plastic film 2 is exhausted, the temperature of the heating package is 172°C, and the given pressure value is 0.5mpa. The entire process takes 5.0 seconds to complete. Use the high-frequency electromagnetic heating process to fully bond th...

Embodiment 3

[0053]1. Cut the coated pole piece into a specified size of 300mm*250mm with a die cutter, and cut the reserved part of the tab into the same size as the copper metal strip 1 after the lamination process;

[0054] 2. The metal strip 1 of a dense Cu-sodium formate coordination layer is obtained by copper surface treatment, and the pole piece is welded together to form the tab metal strip 1;

[0055] 3. Put the tab metal strip 1 and the aluminum-plastic film 2 into the tooling mold and fix them, use the high-frequency electromagnetic heating process to heat and seal the tab metal strip 1 and the aluminum-plastic film 2, and set a fixed pressure when heating and packaging to make the pole The air between the ear metal strip 1 and the aluminum-plastic film 2 is exhausted, the temperature of the heating package is 175°C, and the given pressure value is 0.5mpa. The entire process takes 4 seconds to complete. 4. The tab metal strip 1 and the aluminum-plastic film 2 are hot-melted and...

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Abstract

The invention provides a flexible package battery packaging process. The packaging process comprises the following steps: S1, cutting and laminating a coated pole piece, and cutting a reserved position of a pole lug into the same size as a metal strip; S2, fixedly connecting a metal belt with the pole piece to form a tab metal belt; S3, packaging the two sides of the tab metal belt with aluminum plastic films by using a high-frequency electromagnetic heating process; and S4, performing cold sealing after hot melting of the tab metal belt and the aluminum-plastic film is completed. According to the packaging process of the flexible package battery, the problems of pollution, damage or poor processing and the like of the tabs in the processing process of a manufacturer are effectively avoided; and the tab processing technology and the battery cell processing technology are combined, so that the processing period is shortened, the excellent rate is improved, and the problem of aging of the tab caused by secondary heating in the battery cell manufacturing process can be solved.

Description

technical field [0001] The invention belongs to the field of lithium ion batteries, and in particular relates to a soft packaging battery packaging process. Background technique [0002] The existing technology is that the metal strip purchased by the tab manufacturer is used for cleaning, electroplating, anti-oxidation and other processes, and the tab glue is bonded and hot-melted, and finally the tab is shaped, packaged, and transported to the manufacturer for aluminum-plastic film, Materials such as pole pieces are processed into batteries. There are certain uncontrollable factors in all the above-mentioned processes, which will lead to poor processing of the tabs and leakage of glue from the tabs; during the assembly process with the battery and the welding process of the pole pieces, the tabs will be aged and damaged to a certain extent. Contents of the invention [0003] In view of this, the present invention aims to propose a soft packaging battery packaging proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/058H01M10/0525
CPCH01M10/058H01M10/0525Y02E60/10Y02P70/50
Inventor 黄伟张敏申津婧高秀玲
Owner TIANJIN ENERGIES
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