Electrode sheet machining apparatus having plurality of detection members and electrode sheet machining method using the same

Patent metadata

Field	Value
Publication number	US-2026097452-A1
Application number	US-202419120739-A
Country	US
Kind code	A1
Filing date	Apr 19, 2024
Priority date	May 10, 2023
Publication date	Apr 9, 2026
Grant date	—

Abstract

Disclosed are an electrode sheet machining apparatus having a plurality of detection members and an electrode sheet machining method using the same, and more particularly an electrode sheet machining apparatus, including an unwinder unit configured to supply an electrode sheet, a notching unit configured to notch the electrode sheet, a drying unit configured to dry the notched electrode sheet, a rewinder unit configured to wind the dried electrode sheet, and a second detection member located between the drying unit and the rewinder unit, configured to inspect a state of the electrode sheet prior to winding, and an electrode sheet machining method using the same.

First claim

1 . An electrode sheet machining apparatus, comprising:
an unwinder unit configured to supply an electrode sheet; a notching unit configured to notch the electrode sheet; a drying unit configured to dry the notched electrode sheet; a rewinder unit configured to wind the dried electrode sheet; and a second detection member located between the drying unit and the rewinder unit, configured to inspect a state of the electrode sheet prior to winding.

2 . The electrode sheet machining apparatus according to claim 1 , wherein a guide roller configured to change a movement direction of the electrode sheet is located in the vicinity of the rewinder unit.

3 . The electrode sheet machining apparatus according to claim 2 , wherein the second detecting member is received in the guide roller.

4 . The electrode sheet machining apparatus according to claim 3 , wherein:
the guide roller comprises a second drum having a space defined therein and a pair of second shafts located at both ends of the second drum, and the second drum is made of a transparent material.

5 . The electrode sheet machining apparatus according to claim 4 , wherein the transparent material comprises at least one of glass, quartz, acrylic, polyethylene terephthalate, polypropylene, polyethylene, polyamide, or polystyrene.

6 . The electrode sheet machining apparatus according to claim 4 , wherein the second detection member comprises a detector body located in the space of the second drum and a third shaft located at both ends of the detector body.

7 . The electrode sheet machining apparatus according to claim 6 , wherein the detector body is a bar-shaped vision camera.

8 . The electrode sheet machining apparatus according to claim 7 , wherein the detector body acquires information of at least one of an overall length, a shoulder line, a tab height, or a surface of the electrode sheet.

9 . The electrode sheet machining apparatus according to claim 7 , wherein the detector body has a length greater than a width of the electrode sheet.

10 . The electrode sheet machining apparatus according to claim 6 , wherein the third shaft extends through an interior of the second shaft such that the guide roller and the second detection member can be driven independently.

11 . The electrode sheet machining apparatus according to claim 1 , further comprising:
a first detection member between the unwinder unit and the drying unit.

12 . The electrode sheet machining apparatus according to claim 11 , further comprising:
a third detection member configured to inspect a state of the electrode sheet wound on the rewinder unit.

13 . An electrode sheet machining method comprising:
supplying an electrode sheet through an unwinder unit; notching the supplied electrode sheet; drying the notched electrode sheet; winding the dried electrode sheet through a rewinder unit; and inspecting a state of the dried electrode sheet between the drying step and the winding step.

14 . The electrode sheet machining method according to claim 13 , wherein the inspecting the state of the electrode sheet comprises acquiring information of at least one of an overall length, a shoulder line, a tab height, or a surface of the electrode sheet.

15 . The electrode sheet machining method according to claim 14 , wherein the electrode sheet machining method is suspended when the acquired information deviates from a set value.

Assignees

• Lg Energy Solution Ltd

Inventors

• Park Kyoung Do

Classifications

• H01M4/75

  Wires, rods or strips · CPC title

• B26F1/12

  to notch margins of work · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• B65H2553/80

  Arangement of the sensing means · CPC title

• B65H2553/42

  Cameras · CPC title