Battery, battery manufacturing method, and battery manufacturing apparatus

• US 10,553,907 B2
• Filed: 04/04/2017
• Issued: 02/04/2020
• Est. Priority Date: 04/25/2016
• Status: Active Grant

• Current Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Inventors: Honda, Kazuyoshi
• Primary Examiner(s): Ruddock, Ula C
• Assistant Examiner(s): Parsons, Thomas H.
• Application Number:
  US15/478,285
• Publication Number:
  US 20170309965A1
• Time in Patent Office: 1,036 Days
• CPC Class Codes: H01M 10/04 Construction or manufacture in general H01M10/058, H01M10/12, H01M10/28, H01M10/38 take precedence
• CPC Class Codes: H01M 10/0404 Machines for assembling batteries
• CPC Class Codes: H01M 10/0562 Solid materials
• CPC Class Codes: H01M 10/0585 of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
• CPC Class Codes: H01M 4/04 Processes of manufacture in general
• CPC Class Codes: H01M 4/0414 by screen printing
• CPC Class Codes: H01M 4/0421 involving vapour deposition
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Abstract

A battery including a first electrode layer, a solid electrolyte layer on the first electrode layer, a second electrode layer which is located on the solid electrolyte layer and which is a counter electrode layer of the first electrode layer, and a space portion, wherein a first thickness portion is located on the first active material layer, the second thickness portion is located on the first electrode layer, the second active material layer is located at a position which faces the first thickness portion and which does not face the first active material layer via the second thickness portion, the second collector extends to the position facing the second thickness portion and a region provided with the second active material layer, the second thickness portion is in contact with the second electrode layer, and the space portion is surrounded by the second electrode layer and the second thickness portion.

Claims

1. A battery comprising:

a first electrode layer;

a solid electrolyte layer located on the first electrode layer;

a second electrode layer which is located on the solid electrolyte layer and which is a counter electrode layer of the first electrode layer; and

a space portion,

wherein the first electrode layer is a layer including a first collector and a first active material layer located on the first collector,

the second electrode layer is a layer including a second collector and a second active material layer located on the second collector,

the solid electrolyte layer is a layer including a first thickness portion having a first thickness and a second thickness portion having a second thickness larger than the first thickness,

the first thickness portion is located on the first active material layer,

the second thickness portion is located on the first active material layer or the first current collector,

the second active material layer is located at a position which faces the first thickness portion and which does not face the second thickness portion in a thickness direction of the battery,

the second thickness portion is in contact with the second current collector, and

the space portion is surrounded by the second active material layer, the second current collector, and the second thickness portion.

2. The battery according to claim 1,

wherein the second thickness portion is located between the first thickness portion and a first end of the first collector and between the first thickness portion and a second end of the first collector.

3. The battery according to claim 2,

wherein the second thickness portion is located between the first thickness portion and four ends of the first collector.

4. The battery according to claim 1,

wherein the second active material layer is located at a position in contact with the first thickness portion,

the second thickness portion is in contact with the second collector, and

the space portion is surrounded by the second thickness portion and at least one of the second active material layer and the second collector.

5. The battery according to claim 4,

wherein the space portion is disposed with surrounding the second active material layer.

6. The battery according to claim 1,

wherein the second electrode layer further includes a second solid electrolyte layer,

the second solid electrolyte layer is located between the second active material layer and the first thickness portion,

the second thickness portion is in contact with the second solid electrolyte layer, and

the space portion is surrounded by the second solid electrolyte layer and the second thickness portion.

7. The battery according to claim 6,

wherein the space portion is disposed with surrounding the second solid electrolyte layer.

8. The battery according to claim 1,

wherein the solid electrolyte layer includes a third thickness portion having a third thickness larger than the first thickness and smaller than the second thickness, and

the third thickness portion is located at a position facing the second active material layer or on the first active material layer.