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Battery packaging material and battery

A packaging material and battery technology, applied to battery pack parts, circuits, electrical components, etc., can solve problems such as easy pinholes or cracks, and achieve excellent formability

Pending Publication Date: 2020-04-10
DAI NIPPON PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such a film-like packaging material is thinner than a metal packaging material, and there is a disadvantage that pinholes and cracks are likely to occur during molding.

Method used

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  • Battery packaging material and battery
  • Battery packaging material and battery
  • Battery packaging material and battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0219] A barrier made of aluminum foil (thickness 35 μm, JIS H4160: 1994A8021H-O) with chemical surface treatment on both sides is laminated on a biaxially stretched nylon film (thickness 15 μm) as a base layer by dry lamination layer. Specifically, a two-component polyurethane adhesive (polyol compound and aromatic isocyanate compound) was applied to one surface of the barrier layer to form an adhesive layer (thickness: 3 μm) on the barrier layer. Next, the adhesive layer and the substrate layer on the barrier layer are laminated to produce a laminate of substrate layer / adhesive layer / barrier layer. Among them, the chemical surface treatment of the aluminum foil used as the barrier layer is to apply the treatment solution composed of phenolic resin, chromium fluoride compound and phosphoric acid by using the roller coating method to achieve a coating amount of 10mg / m2 of chromium. 2 (dry mass) was applied on both sides of the aluminum foil and sintered.

[0220] Next, on th...

Embodiment 2

[0222] It carried out similarly to Example 1, and produced the laminated body of a base material layer / adhesive layer / barrier layer. Next, a solution (thickness after curing: 2 μm) containing maleic anhydride-modified polypropylene and a curing agent (epoxy) was applied on the barrier layer of the obtained laminate, and unstretched A polypropylene film (thickness: 30 μm) was used to obtain a battery packaging material in which a substrate layer / adhesive layer / barrier layer / adhesive layer / heat-sealable resin layer were sequentially laminated.

Embodiment 3

[0224] A barrier made of aluminum foil (thickness 35 μm, JIS H4160: 1994A8021H-O) with chemical surface treatment on both sides is laminated on a biaxially stretched nylon film (thickness 15 μm) as a base layer by dry lamination layer. Specifically, a two-component polyurethane adhesive (polyol compound and aromatic isocyanate compound) containing carbon black (median diameter: 0.191 μm) was applied to one surface of the barrier layer to form an adhesive on the barrier layer. layer (thickness 3 μm). Next, after laminating the adhesive layer and the base material layer on the barrier layer, aging treatment was performed to produce a laminate of base material layer / adhesive layer (black) / barrier layer. However, the chemical surface treatment of the aluminum foil used as the barrier layer was carried out in the same manner as in Example 1. In addition, the average particle diameter of carbon black is a median diameter measured with the laser diffraction / scattering type particle...

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Abstract

The present invention provides a battery packaging material that: comprises a laminate that comprises, in order, at least a base material layer, a barrier layer, and a heat-fusible resin layer; and has excellent formability. This battery packaging material is configured from a laminate that comprises, in order, at least a base material layer, a barrier layer, and a heat-fusible resin layer. The laminate is no more than 100 [mu]m thick, and, when the breaking energy of the laminate per unit length of 1 m is calculated from a measurement load (N / 15 mm)-displacement curve measured by tensile testunder the test conditions below, the sum X+Y of the breaking energy X in one direction that is orthogonal to the thickness direction of the laminate and the breaking energy Y in another direction that is orthogonal to the one direction and to the thickness direction of the laminate is at least 200 J. (Test conditions) Test speed: 50 mm / min. Width of test piece: 15 mm. Gauge length: 30 mm.

Description

technical field [0001] The present invention relates to a battery packaging material and a battery. Background technique [0002] Various types of batteries are currently being developed, and packaging materials are indispensable components for sealing battery elements such as electrodes and electrolytes in all batteries. Conventionally, metal packaging materials are often used as packaging materials for batteries. [0003] On the other hand, in recent years, with the improvement in performance of electric vehicles, hybrid electric vehicles, computers, cameras, mobile phones, etc., batteries are required to have various shapes, and thinner and lighter weights are also required. However, the metal packaging materials for batteries used in the prior art are difficult to cope with the diversification of shapes, and there are also disadvantages in that there is a limit to weight reduction. [0004] Therefore, in recent years, as a battery packaging material that can be easily ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/02B32B27/00H01M50/105
CPCB32B27/00Y02E60/10H01M50/105
Inventor 平木健太高萩敦子山下力也畑中秀仁
Owner DAI NIPPON PRINTING CO LTD