# US 2025/0144643 A1 · Gas injection nozzle for drying electrode plate and drying apparatus for electrode plate including the same

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- Number: US 2025/0144643 A1
- Document ID: US20250144643A1
- Status: Published application
- Kind: A1
- Application number: 18/932,523
- Filed: 2024-10-30
- Published: 2025-05-08
- Earliest claimed: 2023-11-02
- Assignees: SK Innovation Co., Ltd.; SK On Co., Ltd.
- Applicants: SK Innovation Co., Ltd.; SK On Co., Ltd.
- Inventors: Jun Young LEE; Dae Hee KIM
- Web page: https://patentgrep.com/patent/US20250144643A1

## CPC

- B05B 1/044: {Slits, e.g. narrow openings defined by two straight and parallel lips; Elongated outlets for producing very wide discharges, e.g. fluid curtains (B05B1/046 takes precedence)}
- H01M 4/04: Processes of manufacture in general
- B05D 1/02: performed by spraying
- F26B 13/10: Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials (heating processes F26B3/00)
- F26B 21/55: Outlets for directing or distributing the air or other gases
- Y02E 60/10: Energy storage using batteries
- B05B: SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES (spray-mixers with nozzles B01F25/72; processes for applying liquids or other fluent materials to surfaces by spraying B05D)
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- B05D: PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (conveying articles or workpieces through baths of liquid B65G, e.g. B65G49/02)
- F26B: DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM (drying devices for combines A01D41/133; racks for drying fruit or vegetables A01F25/12; drying foodstuffs A23; drying hair A45D20/00; body-drying implements A47K10/00; drying household articles A47L; drying gases or vapours B01D; chemical or physical processes for dewatering or like separating liquids from solids B01D43/00; centrifugal apparatus B04; drying ceramics C04B33/30; drying yarns or fabrics in association with some other form of treatment D06C; drying frames for laundry without heating or positive air circulation, domestic laundry-or spin-driers, wringing or hot pressing laundry D06F; furnaces, kilns, ovens F27)
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

Embodiments of the present disclosure provide a gas injection nozzle for drying an electrode plate including a nozzle body having a flow space through which drying gas flows, the flow space being formed between a first plate and a second plate spaced apart from the first plate in a first direction; at least one inlet hole formed in the first plate and configured to allow the drying gas to flow into the flow space from the outside of the nozzle body; and a plurality of injection holes formed in the second plate and configured to inject the drying gas from inside of the flow space to the outside, wherein the at least one inlet hole has a slit shape crossing the first plate in a second direction.

## Claims

### Claim 1

A gas injection nozzle for drying an electrode plate, the gas injection nozzle comprising:
a nozzle body having a flow space through which drying gas flows, the flow space being formed between a first plate and a second plate spaced apart from the first plate in a first direction;
at least one inlet hole formed in the first plate and configured to allow the drying gas to flow into the flow space from the outside of the nozzle body; and
a plurality of injection holes formed in the second plate and configured to inject the drying gas from inside of the flow space to the outside,
wherein the at least one inlet hole has a slit shape crossing the first plate in a second direction.

### Claim 2 (depends on 1)

The gas injection nozzle of claim 1, further comprising:
a deflector disposed between the first plate and the second plate and configured to change a flow direction of the drying gas introduced through the at least one inlet hole.

### Claim 3 (depends on 2)

The gas injection nozzle of claim 2,
wherein the second direction is a longitudinal direction of the nozzle body, and
wherein the deflector has a shape crossing the nozzle body in the second direction and is disposed in a position facing the at least one inlet hole based on the first direction.

### Claim 4 (depends on 2)

The gas injection nozzle of claim 2, wherein a first height between the deflector and the first plate has a value equal to or less than a second height between the deflector and the second plate.

### Claim 5 (depends on 2)

The gas injection nozzle of claim 2, wherein a first height between the deflector and the first plate has a value of ½ or less of the second height between the deflector and the second plate.

### Claim 6 (depends on 3)

The gas injection nozzle of claim 3, wherein a width of the deflector has a value of 10% or more and 90% or less of a width of the first plate.

### Claim 7 (depends on 1)

The gas injection nozzle of claim 1, wherein the plurality of injection holes have a circular shape.

### Claim 8

A drying apparatus for an electrode plate, the drying apparatus comprising:
a chamber having a gas supply space through which drying gas for drying the electrode plate flows; and
a plurality of gas injection nozzles coupled to the chamber to communicate with the gas supply space of the chamber,
wherein the plurality of gas injection nozzles include:
a nozzle body having a flow space through which drying gas flows, between a first plate and a second plate spaced apart from the first plate in a first direction;
at least one inlet hole formed in the first plate and configured to allow the drying gas to flow into the flow space from the outside of the nozzle body; and
a plurality of injection holes formed in the second plate and configured to inject the drying gas in the flow space to the outside,
wherein the at least one inlet hole has a slit shape crossing the first plate in a second direction.

### Claim 9 (depends on 8)

The drying apparatus of claim 8, wherein the plurality of gas injection nozzles further include:
a deflector disposed between the first plate and the second plate and configured to change a flow direction of the drying gas introduced through the at least one inlet hole.

### Claim 10 (depends on 8)

The drying apparatus of claim 8, wherein the plurality of gas injection nozzles have a shape extending in a second direction, a width direction of the electrode plate, and are spaced apart from each other in a third direction, a transport direction of the electrode plate, and
the first direction, the second direction and the third direction are perpendicular to each other.

### Claim 11 (depends on 10)

The drying apparatus of claim 10, wherein the chamber includes an inlet port configured to supply the drying gas to the gas supply space from the outside of the chamber, and a dispersion plate disposed between the inlet port and the first plate, and
the dispersion plate includes a plurality of dispersion holes configured to communicate with the drying gas between the inlet port and the inlet hole.

### Claim 12 (depends on 11)

The drying apparatus of claim 11, wherein the inlet port is configured to supply the drying gas in the second direction, and
the plurality of dispersion holes have a slit shape crossing the dispersion plate in the third direction.

### Claim 13 (depends on 11)

The drying apparatus of claim 11, wherein the inlet port is configured to supply the drying gas in the second direction, and
the plurality of dispersion holes have a slit shape crossing the dispersion plate in the second direction.

### Claim 14 (depends on 8)

The drying apparatus of claim 8, wherein the chamber includes a first chamber in which drying gas injected onto a first surface of the electrode plate flows, and a second chamber in which drying gas injected onto a second surface of the electrode plate flows, and
the plurality of gas injection nozzles are installed in at least one of the first chamber or the second chamber.

### Claim 15

A drying apparatus for an electrode plate, the drying apparatus comprising:
a chamber having a gas supply space and a plurality of gas injection nozzles in fluid communication with the gas supply space of the chamber through which drying gas for drying the electrode plate flows;
wherein each of the plurality of gas injection nozzles includes:
a nozzle body having a first plate and a second plate spaced apart from the first plate in a first direction;
at least one inlet hole formed in the first plate and configured to allow the drying gas to flow into a flow space of the nozzle body from the gas supply space;
a plurality of injection holes formed in the second plate and configured to inject the drying gas that is inside the flow space to an outside of the nozzle body, and
a deflector disposed between the first plate and the second plate configured to change a flow direction of the drying gas entering the flow space through the at least one inlet hole before the drying gas is injected to the outside through the plurality of injection holes.