# US 10,483,557 B2 · Laminate-type power storage element and card electronic device

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- Number: US 10,483,557 B2
- Document ID: US10483557B2
- Status: Granted
- Kind: B2
- Application number: 15/406,240
- Filed: 2017-01-13
- Published: 2017-07-20
- Granted: 2019-11-19
- Earliest claimed: 2016-01-15
- Assignees: Fdk Corporation
- Applicants: Fdk Corporation
- Inventors: Naoaki Nishimura; Daisuke Hirata; Tetsuya Yamashita; Akihiro Yamamoto
- Web page: https://patentgrep.com/patent/US10483557B2

## CPC

- H01M 6/187: {Solid electrolyte characterised by the form}
- H01M 10/0436: {Small-sized flat cells or batteries for portable equipment}
- H01M 6/40: Printed batteries {, e.g. thin film batteries}
- H05K 5/0086: {portable, e.g. battery operated apparatus (casings for switching devices H01H9/02)}
- H05K 5/0091: {Housing specially adapted for small components (for resistors H01C; for capacitors H01G; for integrated circuits H10W99/00)}
- H01M 50/55: on the same side of the cell
- H01M 50/553: Terminals adapted for prismatic, pouch or rectangular cells
- H01M 2220/30: Batteries in portable systems, e.g. mobile phone, laptop
- H01M 2300/0065: Solid electrolytes
- Y02E 60/10: Energy storage using batteries
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A laminate-type power storage element is configured of an exterior body that is formed in a flat bag shape by welding a first laminated film and a second laminated film by thermocompression bonding, and an electrode body that is sealed inside the exterior body, the electrode body having a sheet-shaped positive electrode and a sheet-shaped negative electrode. The first laminated film and the second laminated film respectively includes a first resin layer that has a property of transmitting a laser beam, a metal foil that is layered to the first resin layer, and a second resin layer is layered to the metal foil and has a thermal weldability.

## Claims

### Claim 1

A laminate-type power storage element, comprising:
an exterior body that is formed in a flat bag shape by welding a first laminated film and a second laminated film by thermocompression bonding; and
an electrode body that is sealed inside the exterior body, the electrode body having a sheet-shaped positive electrode and a sheet-shaped negative electrode, wherein
the first laminated film and the second laminated film each includes
a first resin layer that has a property of transmitting a laser beam,
a metal foil that is layered to the first resin layer, and
a second resin layer that is layered to the metal foil and has a thermal weldability,
the exterior body is configured such that the second resin layer of the first laminated film opposes the second resin layer of the second laminated film,
a label is formed in a surface of the metal foil facing the first resin layer of at least on of the first laminated film or the second laminated film by laser marking without altering the first resin layer of the first laminated film or the second laminated film by the laser beam, and
the label is formed at a region where the first laminated film and the second laminated film are welded.

### Claim 2 (depends on 1)

The laminate-type power storage element according to claim 1, wherein
the exterior body is configured by welding a plurality of peripheral edges of the first laminated film and the second laminated film and the label is formed on at least one of the plurality of peripheral edges.

### Claim 3 (depends on 1)

The laminate-type power storage element according to claim 1, wherein
the laminate-type power storage element is incorporated into a card electronic device, the card electronic device being configured by pasting two resin films together with adhesive.

### Claim 4 (depends on 1)

A card electronic device, comprising:
a second exterior body configured by pasting two resin films together with adhesive;
an electronic circuit incorporated in the second exterior body; and
a power supply incorporated in the second exterior body, wherein
a laminate-type power storage element according to claim 1 is used as the power supply.