Electrode drying device equipped with water supply part, and method for drying electrode using same

Patent metadata

Field	Value
Publication number	US-12435925-B2
Application number	US-202017631663-A
Country	US
Kind code	B2
Filing date	Jul 15, 2020
Priority date	Aug 1, 2019
Publication date	Oct 7, 2025
Grant date	Oct 7, 2025

Abstract

Provided is an electrode drying apparatus including a moisture supply unit capable of setting the internal temperature of a drying oven to a reference value, which is a level at which the drying of an electrode to be dried is stabilized, before an electrode drying process using hot air is started, thereby preventing the electrode from being fractured by over-drying at the early stage of drying the electrode in the drying oven, and an electrode drying method using the same.

First claim

The invention claimed is:

1. An electrode drying apparatus comprising:
a body comprising:
an internal accommodation space provided for a drying process;
an inlet; and
an outlet;

a transporter configured to transport an electrode to be dried in a single direction so that the electrode to be dried passes through the accommodation space through the inlet and the outlet;
a hot air supplier configured to blow hot air toward the electrode transported by the transporter so as to dry the electrode to be dried;
a temperature measurer configured to measure an internal temperature of the accommodation space; and
a moisture supply unit configured to supply moisture into the accommodation space before the electrode to be dried passes through the accommodation space, so that the internal temperature of the accommodation space is lowered to a predetermined reference value, by evaporation of the supplied moisture, and is stabilized,
wherein the moisture supply unit comprises a moisture spray nozzle configured to supply the moisture in form of a mist so that the moisture is contained in and supplied together with the hot air supplied into the accommodation space by the hot air supplier,
wherein the moisture supply unit is configured to stop supplying moisture into the accommodation space once the predetermined reference value is reached, and
wherein, once the accommodation space reaches the predetermined reference value, the transporter is configured to start transporting the electrode to be dried into the accommodation space through the inlet.

2. The electrode drying apparatus of claim 1 , wherein the hot air supplier comprises:
a heat exchanger configured to heat external air supplied thereto; and
a blower fan configured to supply the external air heated by the heat exchanger into the accommodation space.

3. The electrode drying apparatus of claim 2 , wherein the hot air supplier further comprises a damper disposed within a duct that communicates with an interior of the accommodation space and configured to adjust an amount of the hot air supplied into the accommodation space.

4. The electrode drying apparatus of claim 3 , wherein the moisture spray nozzle is disposed within the duct.

5. The electrode drying apparatus of claim 4 , wherein a bottom of the duct includes a drain hole, the drain hole being configured to discharge water outwards when the water leaks from the moisture supply unit.

6. The electrode drying apparatus of claim 4 , wherein the moisture supply unit further comprises:
a storage tank configured to store deionized (DI) water;
a supply line; and
a supply pump configured to supply the DI water stored in the storage tank to the moisture spray nozzle through the supply line.

7. The electrode drying apparatus of claim 6 , wherein an on-off valve and a flow meter are disposed on the supply line connected to the electrode drying apparatus, and are controlled in real time, such that a total amount of the DI water supplied to the electrode drying apparatus using the on-off valve and the flow mater is controlled in real time.

8. An assembly including a plurality of the electrode drying apparatus of claim 1 , the plurality of electrode drying apparatuses being spaced apart from each other in parallel,
wherein the plurality of electrode drying apparatuses include:
a storage tank configured to store deionized (DI) water; and
a supply pump configured to supply the DI water stored in the storage tank to the moisture spray nozzle through a supply line, and
wherein the DI water stored in the storage tank is supplied to each of the plurality of electrode drying apparatuses through the supply line.

9. The electrode drying apparatus of claim 1 , wherein the temperature measurer comprises:
a first sensor configured to measure a temperature of the hot air supplied by the hot air supplier;
a second sensor configured to monitor the internal temperature of the accommodation space in real time; and
a third sensor configured to measure a temperature of air discharged from the accommodation space.

10. The electrode drying apparatus of claim 9 , wherein, when the temperature measured by the third sensor is higher than the predetermined reference value, the moisture supply unit supplies the moisture into the accommodation space so that the internal temperature of the accommodation space reaches the predetermined reference value.

11. The electrode drying apparatus of claim 9 , wherein the first sensor is located upstream of the moisture spray nozzle.

12. The electrode drying apparatus of claim 9 , wherein the first sensor and the third sensor are located outside of the body.

13. An electrode drying method using the electrode drying apparatus according to claim 1 , comprising:
measuring the internal temperature of the accommodation space before introducing the electrode to be dried into the accommodation space of the electrode drying apparatus;
when the measured internal temperature of the accommodation space is higher than the predetermined reference value, which is a level at which drying of the electrode to be dried is stabilized, spraying, by the moisture supply unit, moisture into the accommodation space to cool the accommodation space; and
when the measured internal temperature of the accommodation space has reached the predetermined reference value, stopping the supplying of the moisture into the accommodation space and performing a drying process by allowing the electrode to be dried to move through the accommodation space.

14. The electrode drying method of claim 13 , wherein the moisture supply unit allows the moisture to be contained in and supplied together with the hot air supplied into the accommodation space.

15. The electrode drying method of claim 13 , wherein an amount of the moisture sprayed by the moisture supply unit is adjusted by comparing a measured temperature of air discharged through the accommodation space with the predetermined reference value.

16. The electrode drying apparatus of claim 1 , wherein the hot air supplier comprises:
an upper trunk including discharge holes located on a bottom surface of the upper trunk; and
a lower trunk including discharge holes located on an upper surface of the lower trunk,
wherein the transporter is configured to move the electrode to be dried between the upper trunk and the lower trunk.

Assignees

• Lg Energy Solution Ltd

Inventors

• Kim Kyoung Ho

Classifications

• F26B21/35 Primary

  Temperature; Pressure · CPC title

• F26B21/33

  Humidity · CPC title

• F26B21/452 Primary

  characterised by the steam generating means · CPC title

• F26B21/50

  Ducting arrangements from the source of air or other gases to the materials or objects being dried · CPC title

• F26B21/37

  Velocity of flow; Quantity of flow · CPC title