KR-20260065426-A - Apparatus of forming electrode

Abstract

The present invention relates to an electrode forming device. An electrode forming device according to one aspect of the present invention comprises: a forming roller for forming a film-shaped electrode that is transported in one direction; and a foreign substance removal unit located at the rear end of the forming roller with respect to the transport direction of the electrode and capable of absorbing foreign substances in a passage space through which the electrode passes. The foreign substance removal unit may include: a first suction part arranged so that an opening faces one side of the passage space; and a duct part connected to the first suction part and provided so that negative pressure can be applied.

Inventors

• 정선용
• 이우정
• 김준완
• 김상열
• 김종한

Assignees

• 주식회사 엘지에너지솔루션

Dates

Publication Date

20260508

Application Date

20241101

Claims (20)

1. A forming roller for forming a film-shaped electrode that is transported in one direction; and It includes a foreign substance removal unit positioned at the rear end of the molding roller based on the conveying direction of the electrode, capable of absorbing foreign substances in the passage space through which the electrode passes. The above foreign substance removal unit is, A first suction part positioned so that an opening faces one side of the passage space; and An electrode forming device comprising a duct portion connected to the first suction portion and configured to allow negative pressure to be applied.
2. In Article 1, The above passage space is defined as a film-shaped space identical to the electrode, in an electrode forming device.
3. In Article 2, The above opening is an electrode forming device having a cross-section parallel to the above surface that has a square shape.
4. In Paragraph 3, An electrode forming device in which the width of the opening is smaller than the width of the passage space.
5. In Article 1, The above foreign substance removal unit is, An electrode forming device comprising a second suction part arranged such that the opening faces the other side opposite to the one side of the passage space.
6. In Article 5, The above duct section is an electrode forming device connected to the above second suction section.
7. In Article 6, The above foreign substance removal unit is, A first connecting part connecting the above duct part and the first suction part; and An electrode forming device comprising a second connecting part connecting the above duct part and the above second suction part.
8. In Article 7, The first connecting portion extends from the duct portion onto one surface of the passage space, and The second connecting part is an electrode forming device extending from the duct part onto the other surface of the passage space.
9. In Article 8, The above passage space is defined as a film-shaped space identical to the electrode, and The above duct section is an electrode forming device located on one side in the width direction of the above passage space.
10. In Article 9, The electrode forming device, wherein the first connecting portion is formed symmetrically with the second connecting portion with respect to the duct portion.
11. In Article 9, The above duct section extends parallel to the width direction of the passage space, and The first and second connecting portions are arranged at an angle with respect to the passage space, forming an electrode forming device.
12. In Article 1, An electrode forming device further comprising a chamber accommodating the molding roller and the foreign substance removal unit.
13. In Article 12, It further includes a controller provided outside the chamber to control the operation of the molding roller, and The above controller is an electrode forming device positioned opposite the foreign substance removal unit with respect to the passage space.
14. In Article 12, It further includes a plurality of equipment pipes provided outside the chamber, and The above plurality of piping for equipment is an electrode forming device arranged opposite to the foreign matter removal unit with the passing space as the center.
15. In Article 14, An electrode forming device further comprising a pump for applying a predetermined pressure to the plurality of piping for the above-mentioned equipment.
16. In Article 14, The above foreign matter removal unit is an electrode forming device connected to at least one of the plurality of facility pipes.
17. In Article 1, The above opening is an electrode forming device located adjacent to one side of the above passage space.
18. In Article 2, The above passage space is, It includes a passage space for a blank area provided on the width-direction edge side so that the blank area of the above electrode can pass through, The above opening is an electrode forming device positioned to face one side of the above-mentioned pass-through space.
19. In Article 18, An electrode forming device in which the width of the above opening is larger than the width of the above-mentioned pass-through space.
20. In Article 18, An electrode forming device in which the center of the above-mentioned opening and the center of the above-mentioned passing space are arranged parallel to each other in the thickness direction of the above-mentioned passing space.

Description

Electrode forming apparatus The present invention relates to an electrode forming apparatus, and more specifically, to an electrode forming apparatus for forming an electrode used in the manufacture of a secondary battery. Although secondary batteries have been applied to small-scale fields such as mobile devices and laptop computers, recently the direction of research has expanded to medium and large-scale fields, and they are widely used in fields requiring high voltage and large capacity, such as Energy Storage Systems (ESS) and Electric Vehicles (EV). Such secondary batteries can be manufactured using electrodes. The electrode may consist of a current collector made of a foil of a metal material such as copper (Cu) or aluminum (Al) and an electrode active material coated on one or both sides of the current collector. Such electrodes may be formed during the manufacturing process. As an example, the electrode may undergo a forming process in which it is formed by passing through a roller having a special shape. At this time, certain foreign substances may be generated and adsorbed onto the electrode during the electrode forming process. Alternatively, foreign substances originating from the outside may be adsorbed onto the electrode during the forming process. Such foreign substances can cause defects in the secondary battery manufactured from the electrode. For example, foreign substances adsorbed onto the electrode can cause low-voltage defects. Accordingly, there is an urgent need for the development of a device capable of forming high-quality electrodes by removing foreign substances during the forming process. FIG. 1 is a perspective view of an electrode forming apparatus according to one embodiment of the present invention, viewed from above. FIG. 2 is a schematic structural diagram showing an electrode forming apparatus according to one embodiment of the present invention. FIG. 3 is a perspective view from above of a molding roller and a foreign substance removal unit of an electrode molding device according to one embodiment of the present invention. FIG. 4 is a plan view looking vertically at the opening of an electrode forming device according to one embodiment of the present invention. Figure 5 is a cross-sectional view according to II of Figure 3. Figure 6 is an enlarged view of part A of Figure 5. FIG. 7 is a vertical plan view of the opening of an electrode forming device according to another embodiment of the present invention. FIG. 8 is a cross-sectional view taken in the horizontal direction of a foreign substance removal unit of an electrode forming device according to another embodiment of the present invention. Preferred embodiments of the present invention are described in detail so that those skilled in the knowledge can easily implement them. However, the present invention may be embodied in various different forms and is not limited or restricted by the following embodiments. In order to clearly explain the present invention, detailed descriptions of related prior art that are irrelevant to the explanation or that may unnecessarily obscure the essence of the invention have been omitted. Furthermore, when assigning reference numerals to the components of each drawing in this specification, identical or similar reference numerals are assigned to identical or similar components throughout the entire specification. In addition, terms or words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, but should be interpreted in a meaning and concept consistent with the technical spirit of the invention, based on the principle that the inventor can appropriately define the concept of the terms to best describe his invention. Preferred embodiments of the present invention are described in detail so that those skilled in the knowledge can easily implement them. However, the present invention may be embodied in various different forms and is not limited or restricted by the following embodiments. In order to clearly explain the present invention, detailed descriptions of related prior art that are irrelevant to the explanation or that may unnecessarily obscure the essence of the invention have been omitted. Furthermore, when assigning reference numerals to the components of each drawing in this specification, identical or similar reference numerals are assigned to identical or similar components throughout the entire specification. In addition, terms or words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, but should be interpreted in a meaning and concept consistent with the technical spirit of the invention, based on the principle that the inventor can appropriately define the concept of the terms to best describe his invention. FIG. 1 is a perspective view of an electrode forming apparatus according to one embodiment of the present invention, viewe