Formation device of pouch-type battery cell

Patent metadata

Field	Value
Publication number	US-12463234-B2
Application number	US-202318861046-A
Country	US
Kind code	B2
Filing date	Sep 5, 2023
Priority date	Sep 6, 2022
Publication date	Nov 4, 2025
Grant date	Nov 4, 2025

Abstract

An aspect of the current disclosure may include a formation device of a pouch-type battery cell. The formation device of a pouch-type battery cell may include a charging part configured to charge a battery cell, a loading buffer part, an unloading buffer part, a hole processing part configured to form a discharge hole in a gas pocket part of a battery cell, and a sealing part configured to seal the discharge hole of the battery cell. The battery cell waits on the loading buffer part before being placed into the charging part, and wherein the battery cell waits on the unloading buffer part after the battery cell has been charged and removed from the charging part.

First claim

The invention claimed is:

1 . A formation device of a pouch-type battery cell, the formation device comprising:
a charging part configured to charge a battery cell; a loading buffer part configured to receive the battery cell before being placed in the charging part; an unloading buffer part configured to receive the battery cell that has been charged and removed from the charging part; a hole processing part configured to form a discharge hole in a gas pocket part of the battery cell; and a sealing part configured to seal the discharge hole of the battery cell.

2 . The formation device of claim 1 , wherein the charging part is configured to perform a partial charging on the battery cell to partially expand the gas pocket part.

3 . The formation device of claim 2 , wherein, when the partial charging of the battery cell is performed to partially expand the gas pocket part, the discharge hole is formed in the gas pocket part of the battery cell through the hole processing part.

4 . The formation device of claim 3 , wherein the charging part performs residual charging after discharging gas through the discharge hole of the gas pocket part.

5 . The formation device of claim 1 , wherein the hole processing part is provided on one side of the charging part and forms the discharge hole in the gas part of the battery cell accommodated in the charging part.

6 . The formation device of claim 5 , wherein the hole processing part comprises:
a plurality of hole processing units formed correspondingly to a plurality of battery cells arranged in the charging part and configured to form the discharge hole in the gas pocket part of each battery cell; a hole processing unit moving member coupled to each of the hole processing units and configured to move the hole processing unit forward or backward in a direction of the battery cell; and a driving part configured to drive the hole processing unit moving member, wherein the plurality of hole processing units simultaneously forms discharge holes in gas pocket parts of the plurality of battery cells.

7 . The formation device of claim 6 , wherein the hole processing unit further comprises:
a pair of gas pocket pressing members configured to press the gas pocket part of the battery cell; a hole processing member installed on an inner side of each gas pocket pressing member of the pair of gas pocket pressing members and configured to form a discharge hole on a press surface of the gas pocket part when pressing the gas pocket part; and a hole processing unit body coupled to one side of the pair of gas pocket pressing members and configured to move each gas pocket pressing member in a direction toward or away from each other.

8 . The formation device of claim 5 , wherein the hole processing part comprises:
a single hole processing unit configured to form the discharge hole in the gas pocket part of the battery cell arranged in the charging part, a hole processing unit moving member coupled to the single hole processing unit and configured to move the single hole processing unit forward or backward in a direction of the battery cell; and a driving part configured to drive the hole processing unit moving member, wherein the single hole processing unit sequentially forms the discharge hole in the gas pocket part of each battery cell.

9 . The formation device of claim 8 , wherein the hole processing unit further comprises:
a pair of gas pocket pressing members configured to press the gas pocket part of a battery cell; a hole processing member installed on an inner side of each gas pocket pressing member of the pair of gas pocket pressing members and configured to form a discharge hole on a press surface of the gas pocket part when pressing the gas pocket part; and a hole processing unit body coupled to one side of the pair of gas pocket pressing members and configured to move the gas pocket pressing members toward or away from each other, wherein each gas pocket pressing member is slidably coupled to the hole processing unit moving member.

10 . The formation device of claim 1 , further comprising a hole processing buffer part,
wherein a charged battery cell waits to form the discharge hole on the hole processing buffer part.

11 . The formation device of claim 10 , wherein the hole processing buffer part comprises:
a processing plate; and a plurality of alignment guide members installed by being spaced apart from the processing plate at a certain distance such that the charged battery cell is arranged on an upper part of the processing plate.

12 . The formation device of claim 10 , wherein the hole processing part is provided on one side of the hole processing buffer part to form the discharge hole in the gas pocket part of the battery cell accommodated in the hole processing buffer part.

Assignees

• Lg Energy Solution Ltd

Inventors

• Bae Hyun Woo
• Lee Jin Soo
• Lee Ho Jung
• Kim Young Woo

Classifications

• H01M4/0445

  Forming after manufacture of the electrode, e.g. first charge, cycling · CPC title

• H01M50/184

  characterised by their shape or structure · CPC title

• H01M50/105

  Pouches or flexible bags · CPC title

• H01M50/394

  Gas-pervious parts or elements · CPC title

• H01M50/3425

  in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member · CPC title