Fully-solid-state battery packaging material and fully-solid-state battery

Patent metadata

Field	Value
Publication number	US-2024387911-A1
Application number	US-202418788000-A
Country	US
Kind code	A1
Filing date	Jul 29, 2024
Priority date	Feb 2, 2022
Publication date	Nov 21, 2024
Grant date	—

Abstract

A fully-solid-state battery packaging material includes at least a substrate layer, a barrier layer, and a sealant layer in this order. The moisture content of the sealant layer is 2700 ppm by mass or less. The sealant layer is, for example, a polyolefin film containing a polyolefin-based resin or a polyester film containing a polyester-based resin.

First claim

What is claimed is:

1 . A fully-solid-state battery packaging material, comprising:
at least a substrate layer, a barrier layer, and a sealant layer in this order, wherein moisture content of the sealant layer is 2700 ppm by mass or less.

2 . The fully-solid-state battery packaging material of claim 1 , wherein
the moisture content of the sealant layer is 2000 ppm by mass or less.

3 . The fully-solid-state battery packaging material of claim 1 , wherein
the moisture content of the sealant layer is 200 ppm by mass or more.

4 . The fully-solid-state battery packaging material of claim 1 , wherein
the sealant layer is a polyolefin film containing a polyolefin-based resin or a polyester film containing a polyester-based resin.

5 . The fully-solid-state battery packaging material of claim 4 , wherein
the sealant layer is the polyolefin film, the polyolefin film contains an acid-modified polyolefin resin layer, and the acid-modified polyolefin resin layer is directly laminated to the barrier layer.

6 . The fully-solid-state battery packaging material of claim 1 , wherein
the sealant layer has a melting point of 250° C. or lower.

7 . The fully-solid-state battery packaging material of claim 1 , wherein
the sealant layer has a melting point of 150° C. or higher.

8 . A fully-solid-state battery, comprising:
a battery body containing a solid electrolyte; and a packaging bag that accommodates the battery body, wherein the packaging bag is obtained by heat-sealing the fully-solid state battery packaging material of claim 1 .

9 . The fully-solid-state battery of claim 8 , wherein
the solid electrolyte is a sulfide-based solid electrolyte.

Assignees

• Toppan Inc

Inventors

• Muraki Takuya

Classifications

• H01M50/186

  characterised by the disposition of the sealing members · CPC title

• H01M50/193

  Organic material · CPC title

• H01M50/124

  having a layered structure · CPC title

• H01M50/141

  for protecting against humidity · CPC title

• H01M10/0585

  of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators · CPC title