# US 9,882,233 B2 · Stepped battery and method and device for manufacturing the same

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- Number: US 9,882,233 B2
- Document ID: US9882233B2
- Status: Granted
- Kind: B2
- Application number: 14/417,278
- Filed: 2014-12-03
- Published: 2015-10-15
- Granted: 2018-01-30
- Earliest claimed: 2014-01-06
- Assignees: LG Chem, Ltd.
- Applicants: LG Chem, Ltd.
- Inventors: Young Hoon Kim; Sung Jin Kwon; Dong Myung Kim; Ki Woong Kim
- Web page: https://patentgrep.com/patent/US9882233B2

## CPC

- H01M 10/0459: {Cells or batteries with folded separator between plate-like electrodes}
- H01M 10/0404: {Machines for assembling batteries}
- H01M 10/049: {Processes for forming or storing electrodes in the battery container}
- 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

Provided are a stepped battery and a method and device for manufacturing the stepped battery, and more particularly, a stepped battery and a method and device for manufacturing the stepped battery, which processes a tent part of a separation film formed on a stepped part of the stepped battery, to prevent a defect from occurring during a subsequent process. A stepped battery manufacturing method includes preparing a stepped battery (10) having a tent portion of a separation film (16) formed on at least one stepped surface (18), and pressing the tent portion by using a press tool (30) having a shape corresponding to the stepped surface (18) of the stepped battery (10).

## Claims

### Claim 1

A stepped battery manufacturing method comprising:
preparing a stepped battery having a tent portion of a separation film formed on at least one stepped surface;
pressing the tent portion by using a press tool having a shape corresponding to the stepped surface of the stepped battery; and
pressing an upper end surface of the stepped battery by an upper jig.

### Claim 2 (depends on 1)

The stepped battery manufacturing method of claim 1, wherein the press tool comprises a hot press tool having a higher temperature than that of the tent portion and the stepped surface.

### Claim 3 (depends on 1)

The stepped battery manufacturing method of claim 1, wherein the tent portion is attached to the stepped surface by pressing the tent portion in the pressing of the tent portion.

### Claim 4 (depends on 1)

The stepped battery manufacturing method of claim 1, wherein the stepped battery is formed in a stack and folding manner.

### Claim 5 (depends on 1)

The stepped battery manufacturing method of claim 1, wherein the stepped battery is formed by attaching separate electrodes to the separation film and folding the separation film.

### Claim 6 (depends on 1)

The stepped battery manufacturing method of claim 1, wherein a contact area between the press tool and the stepped surface is equal to or greater than an area of a horizontal portion of a stepped surface of a pouch that packages the stepped battery.

### Claim 7 (depends on 1)

The stepped battery manufacturing method of claim 1, wherein the press tool has a lower edge that contacts the separation film and that is provided with a chamfer.

### Claim 8 (depends on 1)

The stepped battery manufacturing method of claim 1, wherein while the upper jig presses the upper end surface of the stepped battery, the press tool presses the stepped surface.

### Claim 9 (depends on 1)

The stepped battery manufacturing method of claim 1, wherein after the upper jig presses the upper end surface of the stepped battery, the press tool presses the stepped surface.