Electrode coating apparatus

Patent metadata

Field	Value
Publication number	US-11024834-B2
Application number	US-201715771907-A
Country	US
Kind code	B2
Filing date	Sep 4, 2017
Priority date	Sep 9, 2016
Publication date	Jun 1, 2021
Grant date	Jun 1, 2021

Abstract

The present invention relates to an electrode coating apparatus that is capable of adjusting a temperature of electrode slurry. Also, the electrode coating apparatus for applying electrode slurry to an electrode collector includes a storage part storing the electrode slurry, a discharge part discharging the electrode slurry stored in the storage part to the electrode collector, and a heating part heating the discharge part.

First claim

The invention claimed is:

1. An electrode coating apparatus for applying electrode slurry to an electrode collector, the electrode coating apparatus comprising:
a slot die, the slot die comprising:
a cavity storing the electrode slurry;
an outlet discharging the electrode slurry stored in the cavity to the electrode collector, the outlet having a tapered exterior surface and located downstream from the cavity; and

a heater spaced from the tapered exterior surface of the outlet of the slot die and directed at the outlet for heating the outlet,
wherein the heater heats the tapered exterior surface of the outlet to to indirectly heat the electrode slurry passing through the outlet.

2. The electrode coating apparatus of claim 1 , wherein the heater heats the outlet by using a laser.

3. The electrode coating apparatus of claim 1 , wherein the heater heats the outlet at a temperature of 100° C. to 130° C.

4. The electrode coating apparatus of claim 1 , wherein the heater locally heats the outlet.

5. The electrode coating apparatus of claim 1 , wherein, when the heater heats the outlet, the cavity is heated at a temperature less than that of the outlet by heat conducted from the outlet.

6. The electrode coating apparatus of claim 5 , wherein the heater starts the drying of the electrode slurry from the time when the electrode slurry passes through the outlet.

7. The electrode coating apparatus of claim 5 , wherein the heater reduces a viscosity of the electrode slurry stored in the cavity.

8. The electrode coating apparatus of claim 5 , wherein the heater adjusts a heating temperature of the outlet.

9. An electrode coating apparatus for applying electrode slurry to an electrode collector, the electrode coating apparatus comprising:
a cavity storing the electrode slurry;
an outlet discharging the electrode slurry stored in the cavity to the electrode collector, the outlet located downstream from the cavity and having an exterior surface with a decreasing cross section toward an end of the outlet; and
a heater spaced from the outlet and directed at the outlet for heating the outlet,
wherein the heater is a laser and a beam from the laser is directed at the exterior surface of the outlet, the exterior surface preventing the laser beam from contacting the electrode slurry within the outlet.

Assignees

• Lg Chemical Ltd

Inventors

• Jeong Hee Seok
• Lee Myung Ki
• Song Jooyong
• Ahn Ji Hee

Classifications

• H01M10/04 Primary

  Construction or manufacture in general (H01M10/058, H01M10/12, H01M10/28, H01M10/38 take precedence) · CPC title

• Y02P70/50

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

• H01M4/8828

  Coating with slurry or ink · CPC title

• H01M4/04

  Processes of manufacture in general · CPC title

• B05C11/1042

  provided with means for heating or cooling the liquid or other fluent material in the supplying means upstream of the applying apparatus · CPC title