Battery packaging material

Patent metadata

Field	Value
Publication number	US-10529958-B2
Application number	US-201515122799-A
Country	US
Kind code	B2
Filing date	Mar 11, 2015
Priority date	Mar 13, 2014
Publication date	Jan 7, 2020
Grant date	Jan 7, 2020

Abstract

A battery packaging material of a first aspect identifiable from the outside has exceptional moldability, insulating properties, and reduced external appearance defects and seal defects. A battery packaging material of the second aspect identifiable has post-molding concealment and adhesion properties, exceptional electrolyte resistance and surface insulating properties. The battery packaging material of the first aspect includes a laminate of at least a base material, adhesive, metal and sealant layers sequentially laminated, at least one of the base material and adhesive layers includes a dye. The battery packaging material of the second aspect includes a laminate of at least a decorative, base material, metal and sealant layers sequentially laminated; the decorative layer has at least a first and second decorative layers from the base material layer side. The decorative layer includes coloring and matting agents. The resin ratio is at least 60% by mass for the first and second decorative layers.

First claim

The invention claimed is:

1. A battery packaging material comprising a laminate in which at least a base material layer, an adhesive layer, a metal layer and a sealant layer are laminated in this order, wherein
at least one of the base material layer or the adhesive layer contains a dye, and
the dye is dissolved or dispersed in a resin film forming the base material layer or in an adhesive agent forming the adhesive layer, wherein the dye is at least one selected from the group consisting of a nitro dye, an azo-based dye, a stilbene dye, a carbonium dye, a quinoline dye, a methine dye, a thiazole dye, a quineimine dye, an anthraquinone dye, an indigoid dye and a phthalocyanine dye.

2. The battery packaging material according to claim 1 , wherein a color from the dye forms a discrimination mark.

3. The battery packaging material according to claim 1 , wherein the base material layer contains the dye.

4. The battery packaging material according to claim 1 , wherein the concentration of the dye in the base material layer is 1 to 50% by mass.

5. A battery packaging material comprising a laminate in which at least a decorative layer, a base material layer formed from a resin film, a metal layer and a sealant layer are laminated in this order, wherein
the decorative layer includes at least a first decorative layer and a second decorative layer in this order from the base material layer side,
the decorative layer contains a colorant and a matting agent,
the first decorative layer and the second decorative layer are each formed from a two-liquid curable resin, and
the ratios of resins in the first decorative layer and the second decorative layer are each 60% by mass or more.

6. The battery packaging material according to claim 5 , wherein the ratio of the matting agent in the first decorative layer is 1 to 30% by mass.

7. The battery packaging material according to claim 5 , wherein the first decorative layer contains 1 to 30% by mass of a pigment as the colorant.

8. The battery packaging material according to claim 5 , wherein the ratio of the resin in the first decorative layer is 65% by mass or more.

9. The battery packaging material according to claim 5 , wherein the ratio of the matting agent in the second decorative layer is 1 to 30% by mass.

10. The battery packaging material according to claim 5 , wherein the second decorative layer contains 1 to 30% by mass of a pigment as the colorant.

11. The battery packaging material according to claim 5 , wherein the ratio of the resin in the second decorative layer is 65% by mass or more.

12. The battery packaging material according to claim 5 , wherein the second decorative layer is an outermost layer, and the first decorative layer and the second decorative layer are adhered.

13. The battery packaging material according to claim 5 , wherein the colorant is a black pigment.

14. The battery packaging material according to claim 1 , wherein the metal layer is formed of an aluminum foil.

15. The battery packaging material according to claim 1 , which is a packaging material for a secondary battery.

16. A battery comprising a battery element which includes at least a positive electrode, a negative electrode and an electrolyte, the battery element being stored in the battery packaging material according to claim 1 .

17. A battery comprising a battery element which includes at least a positive electrode, a negative electrode and an electrolyte, the battery element being stored in the battery packaging material according to claim 5 .

18. The battery packaging material according to claim 1 , wherein the dye is a non-pigment colorant.

Assignees

• Dainippon Printing Co Ltd

Inventors

• Ueda Shunsuke
• Yamashita Rikiya
• Hashimoto Yohei
• Hori Yaichiro

Classifications

• H01M10/4221 Primary

  with battery type recognition · CPC title

• B32B2307/4026

  within the layer by addition of a colorant, e.g. pigments, dyes · CPC title

• B32B2553/00

  Packaging equipment or accessories not otherwise provided for · CPC title

• B65D2585/88

  Batteries · CPC title

• B32B2307/206

  Insulating · CPC title