CN-122008352-A - Electrode plate slitting device and electrode plate slitting method using same

Abstract

The invention relates to an electrode plate slitting device and an electrode plate slitting method using the same. The electrode plate slitting device includes a first slitting unit configured to slit a supplied electrode plate raw material into a plurality of divided electrode plates, a second slitting unit configured to slit the plurality of divided electrode plates, a sensor unit configured to detect the plurality of divided electrode plates supplied to the second slitting unit, thereby obtaining detected information about the plurality of divided electrode plates, and a control unit configured to receive the detected information about the plurality of divided electrode plates and control driving of the second slitting unit.

Inventors

• LI JUNXIE
• Quan Biju

Assignees

• 三星SDI株式会社

Dates

Publication Date

20260512

Application Date

20250909

Priority Date

20241112

Claims (20)

1. 1. An electrode plate slitting device comprising: a first cutting unit configured to cut the supplied electrode plate raw material into a plurality of divided electrode plates; a second cutting unit configured to cut the plurality of divided electrode plates; A sensor unit configured to detect the plurality of divided electrode plates supplied to the second cutting unit, thereby obtaining detected information about the plurality of divided electrode plates, and And a control unit configured to receive the detected information about the plurality of divided electrode plates and control driving of the second cutting unit.
2. 2. The electrode plate slitting device of claim 1, wherein: The electrode plate raw material has a plurality of coated portions and a plurality of uncoated portions alternately and repeatedly in a width direction of the electrode plate raw material, and Each of the plurality of divided electrode plates includes one of the plurality of coated portions and one of the plurality of uncoated portions.
3. 3. The electrode plate slitting device of claim 1, wherein: the first cutting unit includes a plurality of dividing cutters, each of the plurality of dividing cutters having a dividing width corresponding to a width of each of the plurality of divided electrode plates, and The plurality of dividing cutters are spaced apart from one another with a spacer between the plurality of dividing cutters.
4. 4. The electrode plate slitting device of claim 1, wherein: The electrode plate raw material has a plurality of coated portions and a plurality of uncoated portions, The sensor unit is further configured to detect a boundary line between one of the plurality of coated portions and one of the plurality of uncoated portions of each of the plurality of divided electrode plates, and The control unit is further configured to compensate, drive and control the second cutting unit in accordance with an error of the boundary line detected by the sensor unit.
5. 5. The electrode plate slitting device of claim 1, wherein: the plurality of divided electrode plates are alternately separated in different directions before being cut by the second cutting unit, and The second cutting unit includes a plurality of dividing lines respectively arranged on paths along which the plurality of divided electrode plates are separated.
6. 6. The electrode plate slitting device of claim 5, wherein each of the plurality of parting lines comprises: A coating side cutter configured to slit one side of the coating portion of each of the plurality of divided electrode plates, and An uncoated side cutter configured to slit one side of an uncoated portion of each of the plurality of divided electrode plates.
7. 7. The electrode plate slitting device according to claim 6, wherein, The coated side tool and the uncoated side tool are independently driven and controlled.
8. 8. The electrode plate slitting device according to claim 5, wherein, The sensor unit is provided in plurality to include a plurality of sensor units configured to detect the plurality of divided electrode plates supplied to the plurality of division lines, respectively.
9. 9. The electrode plate slitting device according to any one of claims 1 to 8, further comprising: an alignment unit configured to adjust alignment of the electrode plate raw material supplied.
10. 10. The electrode plate slitting device according to claim 9, wherein, The alignment unit is further configured to adjust the alignment of the electrode plate raw material supplied based on the information about the plurality of divided electrode plates detected by the sensor unit.
11. 11. An electrode plate slitting method, comprising: Supplying electrode plate raw materials to a first cutting unit; cutting the electrode plate raw material into a plurality of divided electrode plates by the first cutting unit; Supplying the plurality of divided electrode plates to a second cutting unit; cutting the plurality of divided electrode plates by the second cutting unit; Detecting the plurality of divided electrode plates supplied to the second cutting unit by a sensor unit, and The driving of the second cutting unit is controlled by a control unit based on information about the plurality of divided electrode plates detected by the sensor unit.
12. 12. The electrode plate slitting method according to claim 11, wherein: The electrode plate raw material has a plurality of coated portions and a plurality of uncoated portions alternately and repeatedly arranged in a width direction of the electrode plate raw material, and Each of the plurality of divided electrode plates includes one of the plurality of coated portions and one of the plurality of uncoated portions.
13. 13. The electrode plate slitting method according to claim 11, wherein: the first cutting unit includes a plurality of dividing cutters, each of the plurality of dividing cutters having a dividing width corresponding to a width of each of the plurality of divided electrode plates, and The plurality of dividing cutters are arranged to be spaced apart from each other with a spacer therebetween.
14. 14. The electrode plate slitting method according to claim 11, further comprising: detecting a boundary line between the coated portion and the uncoated portion of each of the plurality of divided electrode plates by the sensor unit, and The second cutting unit is compensated, driven and controlled according to the error of the boundary line detected by the sensor unit.
15. 15. The electrode plate slitting method according to claim 11, further comprising: The plurality of divided electrode plates are alternately separated in different directions to obtain separated divided electrode plates, and the separated divided electrode plates are supplied to the second cutting unit, wherein the second cutting unit includes a plurality of dividing lines respectively arranged on paths along which the plurality of divided electrode plates are separated.
16. 16. The electrode plate slitting method according to claim 15, further comprising: slitting one side of the coated portion of each of the plurality of divided electrode plates by a coated side cutter, and One side of the uncoated portion of each of the plurality of divided electrode plates is divided by an uncoated side cutter.
17. 17. The electrode plate slitting method according to claim 16, further comprising: the coated side tool and the uncoated side tool are independently driven and controlled.
18. 18. The electrode plate slitting method according to claim 15, wherein the detecting comprises: The plurality of divided electrode plates supplied to the plurality of division lines are detected by a plurality of sensor units.
19. 19. The electrode plate slitting method according to any one of claims 11 to 18, further comprising: The alignment of the electrode plate raw material supplied to the first cutting unit is adjusted by an alignment unit.
20. 20. The electrode plate slitting process according to claim 19, wherein, The alignment unit is further configured to adjust the alignment of the electrode plate raw material supplied to the first cutting unit based on the information about the plurality of divided electrode plates detected by the sensor unit.

Description

Electrode plate slitting device and electrode plate slitting method using same Cross Reference to Related Applications The present application is based on korean patent application No. 10-2024-0159933, filed on 11/12 of 2024, the disclosure of which is incorporated herein by reference in its entirety, and claims priority to this application. Technical Field Embodiments relate to an electrode plate slitting device and an electrode plate slitting method using the same. Background The secondary battery is formed by inserting an electrode assembly, in which a positive electrode plate, a negative electrode plate, and a separator are wound, into a case and sealing the case with a cap assembly. The positive electrode plate or the negative electrode plate (hereinafter referred to as "electrode plate") is formed to have a coated portion in which an active material slurry is coated on an aluminum film or a copper film, and an uncoated portion in which no coating is applied. The above information disclosed in this background section is for enhancement of understanding of the background of the present disclosure and, therefore, may contain information that does not constitute a related (or prior) art. Disclosure of Invention An embodiment includes an electrode plate slitting device including a first slitting unit configured to slit a supplied electrode plate raw material into a plurality of divided electrode plates, a second slitting unit configured to slit the plurality of divided electrode plates, a sensor unit configured to detect the plurality of divided electrode plates supplied to the second slitting unit, thereby obtaining detected information about the plurality of divided electrode plates, and a control unit configured to receive the detected information about the plurality of divided electrode plates and control driving of the second slitting unit. The electrode plate raw material may have a plurality of coated portions and a plurality of uncoated portions that are alternately and repeatedly in a width direction of the electrode plate raw material, and each of the plurality of divided electrode plates may include one of the plurality of coated portions and one of the plurality of uncoated portions. The first cutting unit may include a plurality of dividing cutters, each of the plurality of dividing cutters having a dividing width corresponding to a width of each of the plurality of divided electrode plates, and the plurality of dividing cutters may be spaced apart from each other with the spacer therebetween. The electrode plate raw material may have a plurality of coated portions and a plurality of uncoated portions, the sensor unit may be further configured to detect a boundary line between one of the plurality of coated portions and one of the plurality of uncoated portions of each of the plurality of divided electrode plates, and the control unit may be further configured to compensate, drive, and control the second cutting unit according to an error of the boundary line detected by the sensor unit. The plurality of divided electrode plates may be alternately separated in different directions before being cut by the second cutting unit, and the second cutting unit may include a plurality of dividing lines respectively arranged on paths along which the plurality of divided electrode plates are separated. Each of the plurality of parting lines may include a coated side cutter configured to slit one side of the coated portion of each of the plurality of divided electrode plates, and an uncoated side cutter configured to slit one side of the uncoated portion of each of the plurality of divided electrode plates. The coated side tool and the uncoated side tool can be driven and controlled independently. The sensor unit may be provided in a plurality to include a plurality of sensor units configured to detect a plurality of divided electrode plates supplied to a plurality of division lines, respectively. The electrode plate slitting device may further include an alignment unit configured to adjust alignment of the supplied electrode plate raw material. The alignment unit may be further configured to adjust alignment of the supplied electrode plate raw material based on information about the plurality of divided electrode plates detected by the sensor unit. An embodiment provides an electrode plate slitting method including supplying an electrode plate raw material to a first slitting unit, slitting the electrode plate raw material into a plurality of split electrode plates by the first slitting unit, supplying the plurality of split electrode plates to a second slitting unit, slitting the plurality of split electrode plates by the second slitting unit, detecting the plurality of split electrode plates supplied to the second slitting unit by a sensor unit, and controlling driving of the second slitting unit by a control unit based on information about the plurality of split electrode plates detected by the sensor