# US 2014/0193705 A1 · Battery cell

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- Number: US 2014/0193705 A1
- Document ID: US20140193705A1
- Status: Published application
- Kind: A1
- Application number: 14/097,577
- Filed: 2013-12-05
- Published: 2014-07-10
- Earliest claimed: 2013-01-10
- Assignees: Samsung SDI Co., Ltd.
- Applicants: Samsung SDI Co., Ltd.
- Inventors: Jae-Wook Lee
- Web page: https://patentgrep.com/patent/US20140193705A1

## CPC

- H01M 50/103: prismatic or rectangular (H01M50/109, H01M50/11 take precedence)
- H01M 50/119: Metals
- H01M 50/121: Organic material
- H01M 50/1243: {characterised by the internal coating on the casing}
- Y02E 60/10: Energy storage using batteries
- 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

## Abstract

In one aspect, a battery cell including a case, an electrode assembly and a top portion where the case has an opened first surface and at least one region including resin is provided.

## Claims

### Claim 1

A battery cell, comprising:
a case having a top portion, a side and a bottom; and
an electrode assembly accommodated inside the case,
wherein the top portion includes a first surface through which a terminal portion extended from the electrode assembly is exposed, wherein the first surface and bottom are each separately connected to the side, wherein the side has an outside surface and an inside surface, and
wherein the case has at least one region including resin.

### Claim 2 (depends on 1)

The battery cells of claim 1, wherein the top portion includes resin.

### Claim 3 (depends on 1)

The battery cells of claim 1, wherein the case includes:
a first region; and
a second region contacting the first region, wherein the second region comprises a portion of the side, wherein the first region comprises the bottom, and
wherein the second region includes resin.

### Claim 4 (depends on 3)

The battery cells of claim 3, wherein the top portion and the second region are formed in a single body.

### Claim 5 (depends on 3)

The battery cells of claim 3, wherein the top portion and the second region are thermally bonded to each other.

### Claim 6 (depends on 3)

The battery cells of claim 3, wherein the first region includes metal.

### Claim 7 (depends on 6)

The battery cells of claim 6, wherein the first region includes aluminum or magnesium.

### Claim 8 (depends on 6)

The battery cells of claim 6, wherein the inner surface of the first region opposite to the electrode assembly is anodized.

### Claim 9 (depends on 6)

The battery cells of claim 6, further comprising an insulation sheet positioned on the inner surface of the first region opposite to the electrode assembly.

### Claim 10 (depends on 3)

The battery cells of claim 3, wherein the top portion and the second region of the case are injection-molded.

### Claim 11 (depends on 3)

The battery cells of claim 3, wherein at least one of a first connection portion of the first region and a second connection portion of the second region, by which the first and second regions are connected to each other, is bent.

### Claim 12 (depends on 3)

The battery cells of claim 3, wherein at least one of a first connection portion of the first region and a second connection portion of the second region, by which the first and second regions are connected to each other, is formed in a stepped configuration.

### Claim 13 (depends on 3)

The battery cells of claim 3, wherein the outermost surface of the portion at which the first and second regions are connected to each other forms the same plane as the outer surface of the second region.

### Claim 14 (depends on 3)

The battery cells of claim 3, wherein the outermost surface of the portion at which the first and second regions are connected to each other enters further inward than the outer surface of the second region.

### Claim 15 (depends on 3)

The battery cells of claim 3, wherein the first region and the second region comprise a connection region.

### Claim 16 (depends on 15)

The battery cells of claim 15, wherein the connection region comprises a first overlapping segment and a second overlapping segment, wherein the first overlapping segment has a first surface and a second surface, and the second overlapping segment has a first surface and a second surface.

### Claim 17 (depends on 16)

The battery cells of claim 16, wherein the outside surface of the side comprises the first surface of the first overlapping segment.

### Claim 18 (depends on 17)

The battery cells of claim 17, wherein the second surface of the first overlapping segment is on the first surface of the second overlapping segment.

### Claim 19 (depends on 16)

The battery cells of claim 16, wherein the second surface of the second overlapping segment is on the first surface of the first overlapping segment.

### Claim 20 (depends on 19)

The battery cells of claim 19, wherein the outside surface of the side does not comprise the first overlapping segment.