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

Method used

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Examples

Experimental program
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Example

[0038] The first embodiment:

[0039] See attached figure 1 , Which is a schematic diagram of the cross-sectional structure of the first embodiment of the battery shell structure 1 of the present invention. The battery shell structure 1 includes an inner coating layer 12, a gas barrier layer 14, and a radical trapping layer 17 sequentially stacked. And outer protective layer 18.

[0040] In this embodiment, a first adhesive layer 13 is further 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 The gas barrier layer 14 is on.

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

Example

[0051] The second embodiment:

[0052] See 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: the battery shell structure shown in the second embodiment A heat-resistant layer 16 is further included, and the heat-resistant layer 16 is formed between the gas barrier layer 14 and the radical trapping 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 trapping adhesive layer 17 Between and the second adhesive layer 15.

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

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

Example Embodiment

[0056] Example 1: 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 covering layer 12, the inner covering layer 12 adopts a polypropylene film (South Asia, CXDA) with a thickness of 40 microns (μm), and a polyurethane resin is arranged on the inner covering layer 12 (Asian Electrical Materials Company, model AEM-A1) to form a 4 μm thick first adhesive layer 13, use a 40 μm thick aluminum foil as the gas barrier layer 14, and stick the gas barrier layer 14 through the first adhesive layer 13 Is connected to the inner coating layer 12, and then a 4 μm thick radical trapping adhesive layer 17 is formed on the gas barrier layer 14, wherein the radical trapping adhesive layer 17 includes a polyurethane resin (Asian Electronics Corporation, Model AEM-A1), and free radical trapping agent (N,N'-bis(2-naphthyl) p-phenylenediamine, Tianqing Chemical, model antioxidant DNP), and t...

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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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