Solid battery

Patent metadata

Field	Value
Publication number	US-9853274-B2
Application number	US-201113993479-A
Country	US
Kind code	B2
Filing date	Feb 24, 2011
Priority date	Feb 24, 2011
Publication date	Dec 26, 2017
Grant date	Dec 26, 2017

Abstract

A solid battery has a first electrode layer, second electrode layer, and solid electrolyte layer disposed therebetween. A first insulating layer is disposed on an outer perimeter of the first electrode layer; a lamination face of the first electrode layer taking a lamination direction of the first electrode layer, the solid electrolyte layer, and the second electrode layer as a normal direction is smaller than that of the solid electrolyte layer; from the lamination direction, an outer edge of the solid electrolyte layer is positioned on the first electrode layer outer perimeter and an outer edge of the first insulating layer is positioned on an outer perimeter of the solid electrolyte layer; and the first electrode layer, the first insulating layer, and the solid electrolyte layer are disposed such that the outer edge of the first insulating layer and an end of the solid electrolyte layer contact each other.

First claim

The invention claimed is:

1. A solid battery comprising:
a first current collector having a surface and an outer edge;
a second current collector having a surface;
a first electrode layer provided on the surface of the first current collector, the first electrode layer having an outer perimeter and a lamination face;
a second electrode layer provided on the surface of the second current collector;
a solid electrolyte layer disposed between the first electrode layer and the second electrode layer, the solid electrolyte layer having an outer edge, an outer perimeter, an end and a lamination face;
a first insulating layer disposed on the outer perimeter of the first electrode layer and on the outer edge of the first current collector, the first insulating layer have an outer edge; and
a space formed by outer surfaces of the first electrode layer, the first insulating layer and the solid electrolyte layer, the space being void of any material,
wherein a size of the lamination face of the first electrode layer is smaller than a size of the lamination face of the solid electrolyte layer, the lamination faces taking a lamination direction of the first electrode layer, the solid electrolyte layer, and the second electrode layer as a normal direction,
when viewed from the lamination direction, the outer edge of the solid electrolyte layer is positioned on the outer perimeter of the first electrode layer and the outer edge of the first insulating layer is positioned on the outer perimeter of the solid electrolyte layer,
the first electrode layer, the first insulating layer, and the solid electrolyte layer are disposed such that the outer edge of the first insulating layer and the end of the solid electrolyte layer are in contact with each other, and
a thickness of the first insulating layer is smaller than a thickness of the first electrode layer.

2. The solid battery according to claim 1 , further comprising a second insulating layer disposed on an outer perimeter of the second electrode layer and on an outer edge of the second current collector.

3. The solid battery according to claim 2 , wherein a thickness of the second insulating layer is no larger than a thickness of the second electrode layer.

4. The solid battery according to claim 1 , wherein a size of a lamination face of the second electrode layer is larger than the size of the lamination face of the first electrode layer, and
when viewed from the lamination direction, an outer edge of the second electrode layer is positioned on the outer perimeter of the first electrode layer.

5. The solid battery according to claim 2 , wherein a size of a lamination face of the second electrode layer is larger than the size of the lamination face of the first electrode layer, and
when viewed from the lamination direction, an outer edge of the second electrode layer is positioned on the outer perimeter of the first electrode layer.

6. The solid battery according to claim 3 , wherein a size of a lamination face of the second electrode layer is larger than the size of the lamination face of the first electrode layer, and
when viewed from the lamination direction, an outer edge of the second electrode layer is positioned on the outer perimeter of the first electrode layer.

Assignees

• Tanaka Katsuhisa
• Toyota Motor Co Ltd

Inventors

• Tanaka Katsuhisa

Classifications

• H01M10/0525 Primary

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• H01M50/463

  Separators, membranes or diaphragms characterised by their shape · CPC title

• H01M10/0565

  Polymeric materials, e.g. gel-type or solid-type · CPC title

• H01M10/0585

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

• H01M2/18 Primary

  Electricity · mapped topic