Electrochemical cell packaging material

Patent metadata

Field	Value
Publication number	US-10673030-B2
Application number	US-201214353198-A
Country	US
Kind code	B2
Filing date	Nov 8, 2012
Priority date	Nov 11, 2011
Publication date	Jun 2, 2020
Grant date	Jun 2, 2020

Abstract

Provided is an electrochemical cell packaging material with excellent electrolyte resistance. An electrochemical cell packaging material includes the following in a laminated structure: a substrate layer that, at a minimum, includes resin film; a protective layer that is arranged as the outermost layer and protects the substrate layer; a thermal adhesion layer that is arranged as the innermost layer and which includes thermal adhesion resin; and a barrier layer that includes metal foil and is arranged between the substrate layer and the thermal adhesion layer. The protective layer is formed of an epoxy resin that has bisphenol A or bisphenol F as an element in the backbone.

First claim

The invention claimed is:

1. A press-formable electrochemical cell packaging material comprising, as layers laminated together, at least:
a base material layer formed of a resin film;
a protective layer arranged as an outer layer, for protecting the base material layer;
a thermally adhesive layer arranged as an innermost layer and formed of a thermally adhesive resin; and
a barrier layer arranged between the base material layer and the thermally adhesive layer and formed of a metal foil,
wherein the protective layer is formed of an epoxy resin having bisphenol A or bisphenol F as skeletal units and having an epoxy equivalent in a range from 100 to 5000, and comprises a fine-particle filler.

2. The electrochemical cell packaging material according to claim 1 ,
wherein
the base material layer and the barrier layer are bonded together by dry lamination with an adhesive containing a pigment.

3. The electrochemical cell packaging material according to claim 2 ,
wherein the pigment comprises carbon black.

4. The electrochemical cell packaging material according to claim 1 ,
wherein a slipping agent layer is provided on a surface of the protective layer.

5. The electrochemical cell packaging material according to claim 4 ,
wherein the slipping agent layer comprises an aliphatic amide-based resin.

6. The electrochemical cell packaging material according to claim 2 ,
wherein a slipping agent layer is provided on a surface of the protective layer.

7. The electrochemical cell packaging material according to claim 1 ,
wherein the resin film of the base material layer is an oriented nylon film.

Assignees

• Dainippon Printing Co Ltd

Inventors

• Akita Hirohisa
• Okushita Masataka
• Watanabe Daisuke
• Yokota Kazuhiko

Classifications

• H01M2/0292

  Electricity · mapped topic

• B32B15/085

  comprising polyolefins · CPC title

• B32B27/304

  comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF · CPC title

• H01M2/0287 Primary

  Electricity · mapped topic

• H01M2/0295

  Electricity · mapped topic