Pouch-shaped battery case sealing apparatus and pouch-shaped secondary battery sealing method using the same

Patent metadata

Field	Value
Publication number	US-12597625-B2
Application number	US-202117918777-A
Country	US
Kind code	B2
Filing date	Dec 24, 2021
Priority date	Dec 28, 2020
Publication date	Apr 7, 2026
Grant date	Apr 7, 2026

Abstract

The present invention relates to a pouch-shaped battery case sealing apparatus capable of adjusting a direction in which an upper sealing block configured to press a laminate sheet applies pressure to the laminate sheet during a process of applying heat and pressure to an outer periphery of a battery case made of the laminate sheet to seal the outer periphery of the battery case when a pouch-shaped battery is manufactured and a pouch-shaped secondary battery sealing method using the same.

First claim

The invention claimed is:

1 . A pouch-shaped battery case sealing apparatus, comprising: an upper sealing block and a lower sealing block together configured to seal a surface of a pouch-shaped battery case,
wherein the surface of the pouch-shaped battery case defines an X-Y plane extending along both an X-axis and a Y-axis, the upper sealing block and the lower sealing block each configured to be disposed parallel to the Y-axis in an initial orientation, the upper sealing block is pivotably coupled to a fixing shaft configured to move upwards and downwards along a Z-axis perpendicular to the X-Y plane, and the upper sealing block and the fixing shaft are pivotably coupled to each other via a hip joint type coupling unit wherein the coupling unit is configured to perform spin motion about the X-axis and/or spin motion about the Y-axis.

2 . The pouch-shaped battery case sealing apparatus according to claim 1 , wherein the coupling unit is disposed at a middle of the upper sealing block.

3 . The pouch-shaped battery case sealing apparatus according to claim 1 , wherein the upper sealing block is configured to tilt with respect to the X-Y plane about the X-axis and about the Y-axis.

4 . The pouch-shaped battery case sealing apparatus according to claim 1 , wherein the coupling unit has a guide configured to prevent rotational motion of the upper sealing block about the Z-axis.

5 . The pouch-shaped battery case sealing apparatus according to claim 1 , wherein the coupling unit comprises:
an insertion portion extending from the fixing shaft, a distal end of the insertion portion being spherical; and a support portion fixed to the upper sealing block, the insertion portion being inserted into a recess extending into the support portion.

6 . The pouch-shaped battery case sealing apparatus according to claim 1 , wherein the coupling unit comprises:
an insertion portion extending from the upper sealing block, a distal end of the insertion portion being spherical; and a support portion disposed at a distal end of the fixing shaft, the insertion portion being inserted into a recess extending into the support portion.

7 . The pouch-shaped battery case sealing apparatus according to claim 1 , wherein the fixing shaft is configured to move the coupling unit in a form of precession with respect to the Z-axis.

8 . The pouch-shaped battery case sealing apparatus according to claim 1 , wherein the coupling unit has two or more joints each configured to pivot the upper sealing block about a single respective rotational axis.

9 . The pouch-shaped battery case sealing apparatus according to claim 1 , wherein the coupling unit is a hip joint type coupling unit.

10 . A method of sealing a pouch-shaped battery using the pouch-shaped battery case sealing apparatus according to claim 1 .

Assignees

• Lg Energy Solution Ltd

Inventors

• Choi Kwang Hee
• Lee Kwan Bo

Classifications

• H01M50/105 Primary

  Pouches or flexible bags · CPC title

• H01M50/186

  characterised by the disposition of the sealing members · CPC title

• B29L2031/7146

  Battery-cases · CPC title

• B29C66/8324

  Joining or pressing tools pivoting around one axis (scissor or lever transmission mechanisms B29C66/8221; tools self-aligning to the joining plane B29C66/8163) · CPC title

• B29C66/832

  Reciprocating joining or pressing tools (B29C66/834 takes precedence) · CPC title