Outer packaging case for power storage equipment and method of manufacturing the same

A technology for electrical storage equipment and outer packaging, applied in the field of capacitors and batteries, can solve the problems of insufficient adhesive tape adhesion and easy peeling of adhesive tapes.

Pending Publication Date: 2020-06-02
乐索纳克包装股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, a battery wrapped with an outer packaging material is often housed in a housing together with other electronic circuits. Electronic circuits are in contact, but if there is a lubricant on the outer surface of the outer packaging material, there is a problem that the adhesiveness of the tape cannot be obtained sufficiently (the adhesive tape is easy to peel off)

Method used

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  • Outer packaging case for power storage equipment and method of manufacturing the same
  • Outer packaging case for power storage equipment and method of manufacturing the same
  • Outer packaging case for power storage equipment and method of manufacturing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] A chemical conversion treatment liquid containing phosphoric acid, polyacrylic acid (acrylic resin), chromium (III) salt compound, water, and alcohol was coated on both sides of aluminum foil 4 with a thickness of 40 μm, and dried at 180° C. to form a chemical conversion film. The amount of chromium attached to this chemical conversion coating is 10mg / m per side 2 .

[0090] Next, a biaxially stretched nylon 6 film 2 with a thickness of 25 μm is dry-laminated (laminated) on one side of the aluminum foil 4 that has undergone the aforementioned chemical conversion treatment by means of a two-component curing polyurethane adhesive (2 μm in thickness) 5 . .

[0091] Next, a first non-stretched film with a thickness of 4.5 μm containing ethylene-propylene random copolymer, 1000 ppm of behenamide and 3000 ppm of silica particles (anti-blocking agent), containing ethylene-propylene block The second unstretched film with a thickness of 21 μm made of copolymer and 1000 ppm of ...

Embodiment 2

[0094] As the sealant film 3, a first unstretched film with a thickness of 4.5 μm containing ethylene-propylene random copolymer, 6000 ppm of behenamide and 3000 ppm of silica particles (anti-blocking agent) was used, containing ethylene -A second unstretched film with a thickness of 21 μm made of a propylene block copolymer and 6000 ppm of erucamide, and an ethylene-propylene random copolymer, 6000 ppm of behenamide and 3000 ppm of silica particles (anti-blocking The first non-stretched film with a thickness of 4.5 μm made of the agent) was co-extruded using a T-die by stacking three layers in this order, except that it was the same as in Example 1, and obtained figure 2 The illustrated outer casing 10 for an electrical storage device.

Embodiment 3

[0096] As the sealant film 3, a first unstretched film with a thickness of 4.5 μm containing ethylene-propylene random copolymer, 500 ppm of behenamide, and 3000 ppm of silica particles (anti-blocking agent) was used, containing ethylene -A second unstretched film with a thickness of 21 μm made of a propylene block copolymer and 500 ppm of erucamide, and containing ethylene-propylene random copolymer, 500 ppm of behenamide and 3000 ppm of silica particles (anti-blocking The first non-stretched film with a thickness of 4.5 μm made of the agent) was co-extruded using a T-die by stacking three layers in this order, except that it was the same as in Example 1, and obtained figure 2 The illustrated outer casing 10 for an electrical storage device.

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Abstract

The present application relates to an outer packaging case for power storage equipment and a method of manufacturing the same. The molded case of the outer packaging material includes a heat-resistantresin layer (2) as an outer layer, a heat-fusible resin layer as an inner layer, and a metal foil layer disposed between the two layers. The molded case is configured as that the heat-fusible resin layer contains a lubricant, the lubricant content of the heat-fusible resin layer is 200 ppm to 8000 ppm. The amount of lubricant on the outer surface of the heat-fusible resin layer is 0.10 [mu]g/cm 2to 1.0 [mu]g/cm 2. The amount of lubricant on the outer surface (2a) of the heat-resistant resin layer (2) is less than 0.01 [mu]g/cm2, and the wetting tension of the outer surface (2a) of the heat-resistant resin layer (2) is more than 30 mN/m.

Description

technical field [0001] The present invention relates to batteries and capacitors used in portable devices such as smartphones and tablet computers; external batteries and capacitors used in power storage devices such as hybrid vehicles, electric vehicles, wind power generation, solar power generation, and nighttime power storage applications. Package and method for its manufacture. [0002] In addition, in this specification and a claim, the term "wetting tension" refers to the wetting index (surface tension) measured based on JIS K6768-1999. Background technique [0003] In recent years, with the reduction in thickness and weight of mobile electronic devices such as smartphones and tablet terminals, lithium-ion secondary batteries, lithium-ion polymer secondary batteries, lithium-ion capacitors, electric double-layer capacitors, etc. Instead of conventional metal cans, laminates including heat-resistant resin layer / adhesive layer / metal foil layer / adhesive layer / thermoplast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/08B32B27/06B32B27/18B32B37/12B32B7/12H01M2/02
CPCB32B15/08B32B7/12B32B27/06B32B27/18B32B37/12B32B2457/10H01M50/124Y02E60/10
Inventor 中嶋大介南堀勇二
Owner 乐索纳克包装股份有限公司
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