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Adhesive tape capable of improving anti-dropping capacity of battery and manufacturing method of adhesive tape

An adhesive tape, anti-drop technology, applied in the direction of adhesives, film/sheet adhesives, adhesive types, etc., can solve the impact of lithium battery energy density, poor adhesion on the inner surface of the shell, and the overall performance of the battery. and other problems, to achieve the effect of strong resistance to lithium battery electrolyte, reduced use area and strong adhesion

Active Publication Date: 2016-09-21
DONGGUAN AOZON ELECTRONICS MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above tape has the following disadvantages: (1) The overall thickness of the tape is relatively thick, which affects the energy density of the lithium battery to a certain extent; (2) The protective layer mentioned in the tape will react with the electrolyte for lithium batteries , has an unpredictable impact on the overall performance of the battery; (3) The oriented polystyrene used in the tape has poor adhesion to the inner surface of the shell, and the area used in the battery is relatively large

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] An adhesive tape that can improve the battery's drop resistance, with a total of five layers, from the closest to the battery pole group to the top, followed by pressure-sensitive adhesive, base material, primer, adhesive layer and double-sided release film, Wherein, the first layer of pressure-sensitive adhesive is made of acrylate adhesive, and the coating thickness is 2um. The acrylate adhesive includes various components in the following mass ratios: 1. Polyolefin rubber 1: 20 parts , 2, polyolefin rubber II: 5 parts, 3, acrylic resin: 60 parts; 4, aziridine curing agent: 1 part; the second layer of base material is PP, and the thickness is 2um; the third layer of primer It is SIS (styrene-isoprene-styrene block copolymer) pressure-sensitive adhesive, the coating thickness is 2um; it includes the following components by mass: 1. 15 parts of SIS rubber elastomer I, 2. SIS rubber elastomer II 20 parts, 3. Polyolefin rubber I 20 parts, 4. Polyolefin rubber II 5 parts, ...

Embodiment 2

[0065] An adhesive tape that can improve the battery's drop resistance, with a total of five layers, from the closest to the battery pole group to the top, followed by pressure-sensitive adhesive, base material, primer, adhesive layer and double-sided release film, Wherein, the first layer of pressure-sensitive adhesive is made of acrylate adhesive, and the coating thickness is 4um. The acrylate adhesive includes various components in the following mass ratio: 1. Polyolefin rubber 1: 30 parts , 2, polyolefin rubber II: 10 parts, 3, acrylic resin: 70 parts; 4, polyurethane curing agent: 2 parts; the second layer of substrate is PA (polyamide) substrate, the thickness is 12um; the third The bottom coating is SIS (styrene-isoprene-styrene block copolymer) pressure-sensitive adhesive, and the coating thickness is 4um; it includes the following components by mass: 1. SIS rubber elastomer I 25 2. SIS rubber elastomer II 40 parts, 3. Polyolefin rubber I 30 parts, 4. Polyolefin rubber...

Embodiment 3

[0075] An adhesive tape that can improve the battery's drop resistance, with a total of five layers, from the closest to the battery pole group to the top, followed by pressure-sensitive adhesive, base material, primer, adhesive layer and double-sided release film, Wherein, the first layer of pressure-sensitive adhesive is made of acrylate adhesive, and the coating thickness is 3um. The acrylate adhesive includes various components in the following mass ratios: 1. Polyolefin rubber 1: 26 parts , 2, polyolefin rubber II: 7 parts, 3, acrylic resin: 65 parts; 4, epoxy curing agent: 1.5 parts; the second layer of substrate is PET (polyethylene terephthalate) base material with a thickness of 8um; the third primer layer is SIS (styrene-isoprene-styrene block copolymer) pressure-sensitive adhesive, with a coating thickness of 3um; various components including the following parts by mass: 1. SIS rubber elastomer I 20 parts, 2. SIS rubber elastomer II 30 parts, 3. Polyolefin rubber I ...

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Abstract

The invention provides an adhesive tape capable of improving the anti-dropping capacity of a battery and a manufacturing method of the adhesive tape. The adhesive tape comprises five layers structurally, the first layer of the adhesive tape is a pressure-sensitive adhesive which has adhesion at normal temperature and is used for binding the outer surface of a battery pole group, the second layer of the adhesive tape is a base material, the third layer of the adhesive tape is primer used for binding the base material to the fourth layer, the fourth layer of the adhesive tape is an adhesive layer used for binding the inner surface of a casing of the battery, and the fifth layer of the adhesive tape is a double-sided release film. The adhesive tape capable of improving the anti-dropping capacity of the battery has the total thickness of 16-35 mu m, materials used for the adhesive tape cannot react with electrolyte, the adhesive tape has adhesion for the battery pole group and the inner surface of the casing in a heating or compression manner, the adhesion strength is high, and a satisfactory effect can be realized after only a small piece of the adhesive tape is used for the battery.

Description

technical field [0001] The application of the present invention relates to an adhesive tape, especially an adhesive tape capable of improving the drop resistance performance of a battery and a manufacturing method thereof. Background technique [0002] Rechargeable batteries, especially lithium batteries, are widely used in mobile phones, notebooks and other fields due to their high energy density, can be used repeatedly, and have a long life and low pollution. With the improvement of science and technology, the requirements for lithium batteries in various fields are getting higher and higher, among which high requirements are put forward for the anti-drop performance of lithium batteries, which determines the stability and safety of lithium batteries. [0003] The drop resistance of lithium batteries is mainly determined by the adhesion between the battery electrode group and the outer packaging material. If the adhesion between the battery electrode group and the outer pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02C09J133/00C09J153/02C09J157/02C09J123/00
CPCC09J7/22C09J7/30C09J7/38C09J123/00C09J133/00C09J153/02C09J157/02C08L2205/035C08L2205/03C08L2205/025C09J2423/106C09J2433/00C09J2477/006C09J2467/006C09J2453/00C09J2453/003C09J2203/33C09J2301/208C09J2301/1242C09J2301/312C09J2301/302C08L23/00C08L53/02C08L57/02
Inventor 王升陆金亮王宜金陈鹏王杰尹嘉菲
Owner DONGGUAN AOZON ELECTRONICS MATERIAL
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