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Tab adhesive film, preparation method thereof, and method for quickly distinguishing positive pole and negative pole of tab

A technology of tab glue and negative electrode, which is applied in the field of quickly distinguishing the positive and negative poles of the tab, the multi-layer composite tab glue film and its preparation, can solve the problems of negative impact on the quality of the tab, damage to the conductor surface, and cumbersome processing, etc. Achieve the effect of saving labor cost and time cost, strong thermal oxidation resistance, and improving yield rate

Pending Publication Date: 2020-02-18
格远电子科技(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of them will cause damage to the surface of the conductor, which will easily have a negative impact on the quality of the tabs and reduce their yield; in addition, the processing process is cumbersome and the production efficiency is low. Certain human and material resources need to be provided, which improves the Cost of production

Method used

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  • Tab adhesive film, preparation method thereof, and method for quickly distinguishing positive pole and negative pole of tab
  • Tab adhesive film, preparation method thereof, and method for quickly distinguishing positive pole and negative pole of tab

Examples

Experimental program
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Effect test

Embodiment 1

[0030] figure 1 It is a front view of the multi-layer composite electrode film, wherein the melting points of the first acid-modified resin layer 1, the middle layer 2 and the second acid-modified resin layer 3 are 145°C, 165°C, and 145°C, respectively.

[0031] Thickness ratio is: first acid modified resin layer 1: intermediate layer 2: second acid modified resin layer 3=3:4:3, first acid modified resin layer 1, intermediate layer 2 and second acid modified resin layer 3 has a total thickness of 30 μm.

[0032] The thickness of the first acid-modified resin layer 1 and the second acid-modified resin layer 3 is 9 μm, and its raw materials are:

[0033] DuPont's acid modified resin Bailao 50E725 and Lianlong 621B, the weight ratio is 50E725:621B=99:1;

[0034] The thickness of the middle layer 2 is 12 μm, and its raw materials are: LT5500 of I.T. Company, 621B of Lianlong and Yingyao toner, and the weight ratio is LT5500:621B: Yingyao toner=97.2:1:1.8, wherein Yingyao toner i...

Embodiment 2

[0046] figure 1 It is a front view of a multi-layer composite tab film, wherein the melting points of the first acid-modified resin layer 1, the middle layer 2, and the second acid-modified resin layer 3 are 125°C, 165°C, and 125°C, respectively.

[0047] Thickness ratio is: first acid modified resin layer 1: intermediate layer 2: second acid modified resin layer 3=3:4:3, first acid modified resin layer 1, intermediate layer 2 and second acid modified resin layer 3 has a total thickness of 80 μm.

[0048] Wherein, the thicknesses of the first acid-modified resin layer 1 and the second acid-modified resin layer 3 are both 24 μm, and their raw materials are respectively:

[0049]The first acid modified resin layer 1 is KS357 of Ineos and 621B of Lianlong, and the weight ratio is KS357:621B=99:1;

[0050] The second acid-modified resin layer 3 is DuPont's acid-modified resins, Bailao 50E739 and Lianlong 621B, and the weight ratio is 50E739:621B=99:1;

[0051] The thickness of ...

Embodiment 3

[0062] figure 1 It is a front view of a multi-layer composite tab film, wherein the melting points of the first acid-modified resin layer 1, the middle layer 2, and the second acid-modified resin layer 3 are 141°C, 165°C, and 141°C, respectively.

[0063] Thickness ratio is: first acid modified resin layer 1: intermediate layer 2: second acid modified resin layer 3=3:4:3, first acid modified resin layer 1, intermediate layer 2 and second acid modified resin layer 3 has a total thickness of 100 μm.

[0064] Wherein, the thicknesses of the first acid-modified resin layer 1 and the second acid-modified resin layer 3 are both 30 μm, and their raw materials are: DuPont’s acid-modified resin Belam 50E739 and Leonon’s 621B, and the weight ratio is 50E739:621B=99 :1;

[0065] The thickness of the middle layer 2 is 40 μm, and its raw material is: LT5500 of I.T. Company and 621B of Leonron, and the weight ratio is LT5500:621B=99:1; or LT5500 of I.T. For LT5500: 621B: toner = 97.2: 1:...

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Abstract

The invention belongs to a tab adhesive film, and relates to a multilayer composite tab adhesive film. The multilayer composite tab adhesive film comprises a first acid-modified resin layer, a middlelayer and a second acid-modified resin layer, wherein the first acid-modified resin layer and the second acid-modified resin layer are colorless layers, and the middle layer is a colored layer or a colorless layer. The invention also provides a preparation method of the multilayer composite tab adhesive film. Different toners are added into the raw materials of the middle layer; the different toners and the raw materials are uniformly mixed, and the obtained mixture undergoes cooling, granulation, melting plasticizing extrusion, tape-casting and cooling to obtain the tab adhesive films with different colors. The tab adhesive films with different colors are attached to the positive pole and the negative pole of the same tab, so that the positive pole and the negative pole of the tab can bedistinguished very easily and quickly, the welding of the positive pole and the negative pole is not disordered, the yield is greatly improved, and the enterprise cost is saved.

Description

technical field [0001] The invention relates to a tab adhesive film, in particular to a multi-layer composite tab adhesive film, a preparation method thereof and a method for quickly distinguishing the positive and negative electrodes of the tab. Background technique [0002] In the battery (energy storage, power) tab industry, the hot-melt resin film (such as PP, PE, etc.) of the same material is used for thermal fusion on the positive and negative tab lead terminals. [0003] The usual tab lead terminal uses a transparent tab hot-melt adhesive film. In order to facilitate the user to quickly distinguish the positive and negative electrodes, the metal lead Tab is generally cut beveled or punched with different shapes or laser coded. However, most of them will cause damage to the surface of the conductor, which will easily have a negative impact on the quality of the tabs and reduce their yield; in addition, the processing process is cumbersome and the production efficiency...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/06B32B27/08B32B27/32B32B27/40B32B27/00H01M2/26B29C48/21B29C48/08B29C48/00B29C41/32B29C41/26H01M50/531
CPCB32B27/08B32B27/32B32B27/40B32B27/00B29C41/26B29C41/32B29C48/21B29C48/022B29C48/08H01M50/531Y02E60/10
Inventor 傅邵春
Owner 格远电子科技(上海)有限公司