Notching apparatus and method for secondary battery

Patent metadata

Field	Value
Publication number	US-11581520-B2
Application number	US-201816604386-A
Country	US
Kind code	B2
Filing date	Dec 19, 2018
Priority date	Jan 16, 2018
Publication date	Feb 14, 2023
Grant date	Feb 14, 2023

Abstract

The present invention relates an electrode notching apparatus. The electrode notching apparatus comprises: a notching unit shaping an electrode into a predetermined pattern; a heating unit drying the electrode processed by the notching unit; and a collecting unit collecting the electrode dried by the heating unit, wherein the heating unit comprises: a heating body having a drying space through which the electrode supplied by the notching unit passes; and heating members directly heating a surface of the electrode passing through the drying space to dry moisture remaining on the electrode.

First claim

The invention claimed is:

1. A notching apparatus for a secondary battery, comprising:
a notching unit configured to shape an electrode into a predetermined pattern;
a heating unit configured to dry the electrode shaped by the notching unit; and
a collecting unit configured to collect the electrode dried by the heating unit,
wherein the heating unit comprises:
a heating body having a drying space through which the electrode shaped by the notching unit passes; and
heating members configured to directly heat a surface of the electrode passing through the drying space to dry moisture remaining on the electrode.

2. The notching apparatus of claim 1 , wherein each of the heating members comprises:
a mounting part provided in the drying space; and
a plurality of heating lamps installed on the mounting part and disposed close to the surface of the electrode to directly heat the surface of the electrode so as to dry the moisture remaining on the electrode.

3. The notching apparatus of claim 2 , wherein the mounting part comprises:
a fixed plate provided in the drying space; and
a guide plate which is slidably coupled to the fixed plate and on which the plurality of heating lamps are installed.

4. The notching apparatus of claim 3 , wherein the heating body comprises:
an inlet which is provided in a left surface of the heating body and through which the electrode supplied from the notching unit is introduced;
an outlet which is provided in a right surface of the heating body and through which the electrode introduced into the drying space is discharged; and
a cover coupled to one surface between the inlet and the outlet,
wherein the guide plate is coupled to the fixed plate so as to be slid in a direction of the cover.

5. The notching apparatus of claim 4 , wherein the heating unit further comprises a transfer roller configured to transfer the electrode introduced into the drying space,
wherein the transfer roller comprises: a first transfer roller disposed at an inlet-side of the drying space; a second transfer roller disposed on an upper portion of a left surface of the drying space; a third transfer roller disposed on an upper portion of a right surface of the drying space; and a fourth transfer roller disposed at an outlet-side of the drying space,
the heating members are respectively provided between the first transfer roller and the second transfer roller, between the second transfer roller and the third transfer roller, and between the third transfer roller and the fourth transfer roller, and
the electrode introduced into the drying space is configured to be dried by the heating members while being transferred along the first to fourth transfer rollers.

6. The notching apparatus of claim 5 , wherein the heating members are respectively provided to correspond to both a first and second surface of the electrode so as to dry both the first and second surfaces of the electrode at a same time.

7. The notching apparatus of claim 6 , wherein the heating member drying the first surface of the electrode, which faces a wall of the drying space, is installed on the wall of the drying space, and
the heating member drying the second surface of the electrode is installed on an auxiliary frame provided in the drying space.

8. The notching apparatus of claim 2 , wherein a heating lamp, of the plurality of heating lamps, is spaced a distance of 2 mm to 10 mm from the surface of the electrode.

9. The notching apparatus of claim 1 , wherein the heating unit further comprises an exhaust member configured to discharge air containing the moisture within the drying space to an outside of the drying space.

10. The notching apparatus of claim 9 , wherein the exhaust member is disposed on an outer surface of the heating body.

11. The notching apparatus of claim 10 , wherein the exhaust member comprises:
an exhaust duct disposed on the outer surface of the heating body to discharge the air within the drying space to the outside; and
an exhaust pump configured to generate suction force to forcibly discharge the air within the drying space to the outside through the exhaust duct.

12. The notching apparatus of claim 2 , wherein a heating lamp, of the plurality of heating lamps, comprises a far-infrared lamp.

13. The notching apparatus of claim 2 , wherein a heating lamp, of the plurality of heating lamps, comprises a xenon light.

14. A notching method for a secondary battery, comprising:
shaping an electrode into a predetermined electrode pattern through a notching unit;
directly heating a surface of the electrode shaped through the notching unit by using a heating unit to dry moisture remaining on the electrode; and
collecting the electrode dried in the heating unit into a collecting unit,
wherein the heating unit comprises:
a heating body having a drying space through which the electrode shaped in the notching unit passes; and
a heating member directly heating the surface of the electrode passing through the drying space to dry the moisture remaining on the electrode.

Assignees

• Lg Chemical Ltd
• Lg Energy Solution Ltd

Inventors

• Woo Sang Jin
• Chung Tae Hwan
• Park Sin Young
• Kang Tae Won
• Park Ji Soo
• Park Dong Hyeuk
• Ahn Chang Bum
• Kim Jae Hong

Classifications

• B26D7/27

  Means for performing other operations combined with cutting (B26D9/00 takes precedence) · CPC title

• H01M4/0471 Primary

  involving thermal treatment, e.g. firing, sintering, backing particulate active material, thermal decomposition, pyrolysis · CPC title

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title

• H05B3/0033

  Heating devices using lamps · CPC title

• B26D3/14

  Forming notches in marginal portion of work by cutting (by punching B26F1/12) · CPC title