Apparatus and method for pressing secondary battery

Patent metadata

Field	Value
Publication number	US-12051773-B2
Application number	US-202117786248-A
Country	US
Kind code	B2
Filing date	Feb 5, 2021
Priority date	Feb 13, 2020
Publication date	Jul 30, 2024
Grant date	Jul 30, 2024

Abstract

An apparatus for pressing a secondary battery comprises a disposing member on which the secondary battery comprising an electrode assembly and a pouch is disposed, and a pressing member configured to press the secondary battery disposed on the disposing member, wherein the pressing member comprises an accommodation part pressing jig configured to press an accommodation part of the pouch, in which the electrode assembly is accommodated, in the pouch of the secondary battery disposed on the disposing member, and a sealing part pressing jig configured to press a sealing part formed along an edge surface of the accommodation part in the pouch of the secondary battery disposed on the disposing member, wherein the sealing part pressing jig is coupled to a surface of the accommodation part pressing jig corresponding to the sealing part to press the sealing part through pressing force transmitted from the accommodation part pressing jig.

First claim

The invention claimed is:

1. An apparatus for pressing a secondary battery, the apparatus comprising:
a disposing member configured to receive thereon the secondary battery comprising an electrode assembly and a pouch; and
a pressing member configured to press the secondary battery disposed on the disposing member,
wherein the pressing member comprises:
an accommodation part pressing jig configured to press an accommodation part of the pouch, in which the electrode assembly is accommodated; and
a sealing part pressing jig configured to press a sealing part of the pouch formed along an edge surface of the accommodation part,

wherein the sealing part pressing jig is coupled to a surface of the accommodation part pressing jig corresponding to the sealing part, so that the sealing part pressing jig is configured to press the sealing part using a pressing force transmitted from the accommodation part pressing jig to the sealing part pressing jig.

2. The apparatus of claim 1 , wherein the sealing part pressing jig is comprises a plurality of pressing blocks assembled with one another.

3. The apparatus of claim 2 , wherein the plurality of pressing blocks comprises a first pressing block coupled to the accommodation part pressing jig, a second pressing block configured to press the sealing part, and one or more third pressing blocks disposed between the first pressing block and the second pressing block.

4. The apparatus of claim 3 , wherein each of the first pressing block and the second pressing block has a rigidity greater than a rigidity of each of the third pressing blocks.

5. The apparatus of claim 4 , wherein each of the third pressing blocks is made of a material configured to have an elastic restoring force.

6. The apparatus of claim 3 , wherein a pressing surface of the second pressing block comprises a plurality of pressing protrusions, such that the sealing part pressing jig is configured to press the sealing part in multiple stages.

7. The apparatus of claim 1 , wherein the sealing part pressing jig detachable from the accommodation part pressing jig.

8. The apparatus of claim 1 , wherein the sealing part pressing jig is adjustable in position in a direction toward or opposite to a center of the accommodation part pressing jig.

9. The apparatus of claim 3 , wherein a pressing surface of the accommodation part pressing jig has an elastic member thereon configured to elastically press the accommodation part of the pouch.

10. A method for pressing a secondary battery, the method comprising:
disposing a secondary battery comprising an electrode assembly and a pouch on a disposing member; and
then pressing the secondary battery using a pressing member,
wherein the pressing comprises:
a first pressing process of pressing an accommodation part of the pouch, in which the electrode assembly is accommodated, using an accommodation part pressing jig of the pressing member; and
a second pressing process of pressing a sealing part formed along an edge surface of the accommodation part using a sealing part pressing jig of the pressing member,

wherein the sealing part pressing jig is coupled to the accommodation part pressing jig, so that the sealing part pressing jig presses the sealing part with a pressing force transmitted from the accommodation part pressing jig to the sealing part pressing jig.

11. The method of claim 10 , further comprising assembling the sealing part pressing jig after the disposing and before the pressing,
wherein, during the assembling, a plurality of pressing blocks having an area corresponding to the sealing part is prepared, and the plurality of pressing blocks comprise a first pressing block, a second pressing block, and one or more third pressing blocks, the plurality of pressing blocks together forming the sealing part pressing jig.

12. The method of claim 11 , wherein the first pressing block is coupled to the accommodation part pressing jig, the second pressing block performs the pressing of the sealing part and is disposed outside the first pressing block, and the one or more third pressing blocks are disposed between the first and second pressing blocks.

13. The method of claim 12 , wherein each of the first pressing block and the second pressing block is made of a material having a rigidity greater than a rigidity of each of the third pressing blocks, and the third pressing block is made of a material configured to have an elastic restoring force.

14. The method of claim 13 , further comprising coupling the sealing part pressing jig to the accommodation part pressing jig after the assembling and before the pressing,
wherein, in during the coupling, the sealing part pressing jig is placed on a surface of the accommodation part pressing jig, and a bolt is passed through an oblong hole formed in a surface of the sealing part pressing jig, so that the sealing part pressing jig is coupled to the accommodation part pressing jig by the bolt, and
wherein the oblong hole is configured such that the bolt is movable therein to adjust a position of the sealing part pressing jig relative to the accommodation part pressing jig.

15. The method of claim 10 , wherein the pressing further comprises coupling an elastic member to a pressing surface of the accommodation part pressing jig, the elastic member pressing the accommodation part of the pouch during the first pressing process.

Assignees

• Lg Energy Solution Ltd

Inventors

• Lee Jung Pil
• Kim Ye Eun
• Lee Jeong Beom

Classifications

• B29C66/81611

  by resilient material · CPC title

• B29C66/8322

  Joining or pressing tools reciprocating along one axis · CPC title

• B29C66/24244

  forming a rectangle · CPC title

• B29C33/308

  Adjustable moulds (for injection moulding B29C45/376) · CPC title

• B29C66/244

  said joint lines being non-straight, e.g. forming non-closed contours · CPC title