Battery Shell Structure

A layered structure and battery shell technology, applied in structural parts, battery pack parts, battery boxes/coats, etc., can solve problems such as battery bursting and reduced battery life, so as to prolong service life, improve shielding, and enhance safety sexual effect

Inactive Publication Date: 2016-11-23
KUSN APLUS TEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the battery in use is overheated due to a sharp rise in temperature due to improper operation, it is easy to cause the battery to burst
In addition, the aluminum foil of the battery is broken due to external force, and it is easy to react inside, and then generate and release oxygen, carbon dioxide or other gases, so that the battery shell absorbs gas and expands, reducing the service life of the battery

Method used

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Examples

Experimental program
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Effect test

no. 1 example

[0039] Please refer to the attached figure 1 , which is a schematic cross-sectional structure diagram of the first embodiment of the battery shell structure 1 of the present invention, the battery shell structure 1 includes an inner cladding layer 12, a gas barrier layer 14, and a free radical capture adhesive layer 17 stacked in sequence And outer protective layer 18.

[0040] In this embodiment, a first adhesive layer 13 is also provided between the inner coating layer 12 and the gas barrier layer 14, and the first adhesive layer 13 is used to bond the inner coating layer 12 to the gas barrier layer 14. above the gas barrier layer 14.

[0041] In this embodiment, the free radical scavenging adhesive layer 17 includes an adhesive and a free radical scavenging agent. The free radical scavenger is a compound used to provide free hydrogen, wherein the compound with the main structure of the aromatic ring having a hydroxyl group is preferred, and the compound has free hydrogen ...

no. 2 example

[0052] Please refer to the attached image 3 , which is a schematic cross-sectional structure diagram of the second embodiment of the battery shell structure 1 of the present invention, the difference from the battery shell structure shown in the first embodiment is that the battery shell structure shown in the second embodiment Among them, a heat-resistant layer 16 is also included, and the heat-resistant layer 16 is formed between the gas barrier layer 14 and the radical capture adhesive layer 17 .

[0053] In this embodiment, the heat-resistant layer 16 is adhered to the gas barrier layer 14 through the second adhesive layer 15, so that the heat-resistant layer 16 is sandwiched between the free radical capture adhesive layer 17 and the second adhesive layer 15.

[0054] The heat-resistant layer 16 has a thickness of 10-50 microns, and its material can be selected from polyamide, polyester, or polyimide.

[0055] The preparation method of the battery shell structure of the...

Embodiment 1

[0056] Embodiment 1: The preparation method of the battery shell structure shown in the first embodiment of the present invention

[0057] The battery shell structure 1 includes an inner cladding layer 12, the inner cladding layer 12 adopts a polypropylene film (Nanya, CXDA) with a thickness of 40 micrometers (μm), and a polyurethane resin is arranged on the inner cladding layer 12 (Asia Electric Materials Company, model AEM-A1) to form a 4 μm thick first adhesive layer 13, use 40 μm thick aluminum foil as the gas barrier layer 14, and stick the gas barrier layer 14 through the first adhesive layer 13 Connected to the inner cladding layer 12, and then form a 4 μm thick free radical capture adhesive layer 17 on the gas barrier layer 14, wherein the free radical capture adhesive layer 17 includes polyurethane resin (Asia Electric Materials Co., Ltd., Model AEM-A1), and free radical scavenger (N, N'-bis (2-naphthyl) p-phenylenediamine, Tianqing Chemical, model anti-aging agent DN...

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Abstract

A battery shell structure disclosed by the present invention comprises at least one inner clapping layer, a gas blocking layer, a free radical capture adhesion layer and an outer protection layer. The gas blocking layer is formed on the inner clapping layer, the free radical capture adhesion layer is formed on the gas blocking layer and comprises an adhesion agent and a free radical capture agent, and the outer protection layer is formed on the free radical capture adhesion layer, so that the free radical capture adhesion layer is clamped between the gas blocking layer and the outer protection layer, and the free radicals generated by a lithium ion secondary battery in an electrolyte is captured by the free radical capture agent, and accordingly, the safety of the lithium ion secondary battery is improved.

Description

technical field [0001] The invention relates to a battery shell structure, and specifically provides a battery shell structure that improves shielding and safety. Background technique [0002] Lithium batteries are widely used as one of the power supply sources for electronic devices such as notebook computers, mobile phones, digital cameras, and electric vehicles. With the influence of electronic equipment becoming thinner and lighter, the thinning of batteries reduces their volume and reduces The design of the occupied space has also been paid more and more attention, and a composite membrane battery shell structure formed by a laminated structure has been developed. [0003] A common battery structure includes an outer casing and a positive electrode layer packaged inside the outer casing, a negative electrode layer, a separator, and an electrolyte. The separator is arranged between the positive electrode layer and the negative electrode layer, and the electrolyte is used...

Claims

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Application Information

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IPC IPC(8): H01M2/02H01M50/116H01M50/124
CPCH01M50/116H01M50/124Y02E60/10
Inventor 林志铭吕常兴何冠毅李建辉
Owner KUSN APLUS TEC CORP
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