# US 8,785,022 B2 · Secondary battery

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- Number: US 8,785,022 B2
- Document ID: US8785022B2
- Status: Granted
- Kind: B2
- Application number: 13/922,796
- Filed: 2013-06-20
- Published: 2013-10-24
- Granted: 2014-07-22
- Earliest claimed: 2005-08-12
- Assignees: Sony Corporation
- Applicants: Sony Corporation
- Inventors: Hiroaki Sato; Yoichi Miyajima; Shoichi Shintani; Toshio Takeshita; Atsushi Takahashi; Kei Tashiro; Hideki Kamiya; Hisashi Aoki; Osamu Nagashima
- Web page: https://patentgrep.com/patent/US8785022B2

## CPC

- H01M 10/0436: {Small-sized flat cells or batteries for portable equipment}
- H01M 10/4257: {Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries}
- H01M 50/119: Metals
- H01M 50/133: Thickness
- H01M 50/209: adapted for prismatic or rectangular cells (H01M50/216 takes precedence)
- H01M 50/528: Fixed electrical connections, i.e. not intended for disconnection
- H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
- H01M 10/46: Accumulators structurally combined with charging apparatus (circuits for charging H02J7/00)
- Y02E 60/10: Energy storage using batteries
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

A secondary battery for an electronic appliance, including a battery cell. The battery cell has a positive electrode, a negative electrode, and an electrolyte in a pack. A positive electrode terminal and a negative electrode terminal are led out from the same side face of the pack. A metallic battery can accommodates the battery cell therein such that the side face from which the positive electrode terminal and the negative electrode terminal are lead out is faced towards the opening side. A lid, made of a synthetic resin, in which terminal parts to be connected to the electrodes of the electronic appliance upon being connected to the positive electrode terminal and the negative electrode terminal are faced outwardly, plugs the opening of the battery can, the battery cell being accommodated in the battery can upon being adhered onto an inner face thereof.

## Claims

### Claim 1

A secondary battery for an electronic appliance, comprising:
a battery cell including a positive electrode, a negative electrode, and an electrolyte in a pack, a positive electrode terminal and a negative electrode terminal from the positive electrode and the negative electrode, respectively being each led out from a first side face of the battery cell;
a battery cell holder including a face part and two opposing longitudinal faces, the battery cell holder accommodating the battery cell therein; and
a cover including a terminal part configured to be connected to the positive and negative electrodes upon being connected to the positive electrode terminal and the negative electrode terminal and being faced outwardly, the cover adjoining the battery cell holder,
wherein a cross section of an entirety of the secondary battery has a substantially trapezoidal flat plate shape including a long edge, a short edge that is shorter than the long edge, and opposing adjoining sides, which adjoin the long edge and the short edge, and
wherein the terminal part is faced outwardly and is disposed closer to the short edge of the trapezoidal shape than to the long edge.

### Claim 2 (depends on 1)

The secondary battery according to claim 1, wherein the battery cell is inserted into the battery cell holder such that each side of the battery cell and each short side of the battery cell corresponds to a long side of the battery cell holder and a short side of the battery cell holder, respectively.

### Claim 3 (depends on 1)

The secondary battery according to claim 1, wherein a clearance exists between the battery cell and an inner periphery of the battery cell holder.

### Claim 4 (depends on 1)

The secondary battery according to claim 1, wherein a second side face of the battery cell opposes the first side face thereof and is adhered to a bottom face of the battery cell holder via an elastic member.

### Claim 5 (depends on 4)

The secondary battery according to claim 4, wherein the elastic member includes an insulating film which is arranged between a cut face of the pack and an inner wall of the battery cell holder.

### Claim 6 (depends on 1)

The secondary battery according to claim 1, wherein a principal face of the battery cell is adhered to a principal face of the battery cell holder by an adhesive disposed on the principal face of the battery cell holder.

### Claim 7 (depends on 1)

The secondary battery according to claim 1, wherein the battery cell is accommodated in the battery cell holder after folding an overlap width part of the pack along an outside face of the pack.

### Claim 8 (depends on 1)

The secondary battery according to claim 1, wherein the terminal part includes a positive terminal part and a negative terminal part.
