# US 2026/0066331 A1 · Press plate for flattening pouch-type cell and method of manufacturing pouch-type cell using the same

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- Number: US 2026/0066331 A1
- Document ID: US20260066331A1
- Status: Published application
- Kind: A1
- Application number: 18/907,130
- Filed: 2024-10-04
- Published: 2026-03-05
- Earliest claimed: 2024-04-09
- Assignees: Samsung SDI Co., Ltd.
- Applicants: Samsung SDI Co., Ltd.
- Inventors: Dong Gyu Yeo; Je Hyun Lee
- Web page: https://patentgrep.com/patent/US20260066331A1

## CPC

- H01M 10/0468: {Compression means for stacks of electrodes and separators}
- H01M 10/0431: {Cells with wound or folded electrodes (H01M10/045 takes precedence)}
- H01M 10/0481: {Compression means other than compression means for stacks of electrodes and separators}
- H01M 10/446: {Initial charging measures}
- H01M 50/105: Pouches or flexible bags
- 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

Disclosed are a press plate capable of effectively flattening a pouch-type cell and also a method of manufacturing a pouch-type cell using the same. The press plate for flattening a pouch-type cell includes a surface facing the pouch-type cell, and the surface facing the pouch-type cell includes at least a portion made of an elastic material.

## Claims

### Claim 1

A press plate for flattening a pouch-type cell, the press plate comprising:
a surface facing the pouch-type cell,
wherein the surface facing the pouch-type cell comprises at least a portion made of an elastic material.

### Claim 2 (depends on 1)

The press plate as claimed in claim 1, wherein the portion of the surface facing the pouch-type cell is made of a urethane-based material.

### Claim 3 (depends on 1)

The press plate as claimed in claim 1, wherein the portion of the surface facing the pouch-type cell is formed to have a hardness Shore A rating of 40 to 60.

### Claim 4 (depends on 1)

The press plate as claimed in claim 1, wherein the surface facing the pouch-type cell is entirely made of an elastic material.

### Claim 5 (depends on 1)

The press plate as claimed in claim 1, wherein the pouch-type cell comprises:
an electrode assembly;
a case accommodating the electrode assembly; and
a lead tab protruding out from the electrode assembly to an area outside of the case,
wherein the surface facing the pouch-type cell comprises a first area corresponding to a portion of the case opposite a portion of the case from which the lead tab is protruding out, and
wherein the first area is made of an elastic material.

### Claim 6 (depends on 5)

The press plate as claimed in claim 5, wherein the surface facing the pouch-type cell comprises a second area corresponding to the portion of the case from which the lead tab is protruding out, and
wherein the second area is made of a rigid material.

### Claim 7 (depends on 6)

The press plate as claimed in claim 6, wherein the second area is made of steel.

### Claim 8 (depends on 1)

The press plate as claimed in claim 1, wherein the press plate is configured to press the pouch-type cell at a pressure in a range of 4 kgf/mm2 to 8 kgf/mm2.

### Claim 9

A method of manufacturing a pouch-type cell, the method comprising:
preparing the pouch-type cell;
performing a charging/discharging cycle on the pouch-type cell; and
pressing the pouch-type cell using a press plate to flatten the pouch-type cell,
wherein the press plate comprises a surface facing the pouch-type cell, and
wherein the surface facing the pouch-type cell comprises at least a portion made of an elastic material.

### Claim 10 (depends on 9)

The method as claimed in claim 9, wherein the portion of the surface of the press plate facing the pouch-type cell is made of a urethane-based material.

### Claim 11 (depends on 9)

The method as claimed in claim 9, wherein the portion of the surface of the press plate facing the pouch-type cell is formed to have a hardness Shore A rating of 40 to 60.

### Claim 12 (depends on 9)

The method as claimed in claim 9, wherein the surface of the press plate facing the pouch-type cell is entirely made of an elastic material.

### Claim 13 (depends on 9)

The method as claimed in claim 9, wherein the pouch-type cell comprises:
an electrode assembly;
a case accommodating the electrode assembly; and
a lead tab protruding out from the electrode assembly to an area outside of the case,
wherein the surface of the press plate facing the pouch-type cell comprises a first area corresponding to a portion of the case opposite a portion of the case from which the lead tab is protruding out, and
wherein the first area is made of an elastic material.

### Claim 14 (depends on 13)

The method as claimed in claim 13, wherein the surface of the press plate facing the pouch-type cell comprises a second area corresponding to the portion of the case from which the lead tab is protruding out, and
wherein the second area is made of a rigid material.

### Claim 15 (depends on 14)

The method as claimed in claim 14, wherein the second area is made of steel.

### Claim 16 (depends on 9)

The method as claimed in claim 9, wherein the press plate presses the pouch-type cell at a pressure in a range of 4 kgf/mm2 to 8 kgf/mm2.