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KR-20260067906-A - Electrode Plate Cutting Machine for Secondary Battery and Secondary Battery Manufacturing Apparatus Equipped with the Electrode Plate Cutting Machine

KR20260067906AKR 20260067906 AKR20260067906 AKR 20260067906AKR-20260067906-A

Abstract

The present invention relates to a secondary battery electrode plate cutter and a secondary battery manufacturing apparatus equipped with an electrode plate cutter. The technical problem to be solved is to prevent the detachment of the substrate or active material during cutting by suppressing the movement of the electrode plate during cutting, and to enable the omission of a post-processing step for collecting foreign matter after cutting. The secondary battery electrode plate cutter and the electrode plate cutter comprise: an upper cutting section having an upper cutter installed above the transport path of an electrode plate transported along a transport path, and an upper stripper positioned on the side of the upper cutter to press and support the electrode plate downward during electrode plate cutting; and a lower cutting section having a lower cutter positioned below the upper cutting section with the electrode plate in between, which cuts the electrode plate through cross-movement with the upper cutter, and a lower stripper positioned on the side of the lower cutter to support the electrode plate upward toward the upper cutter during electrode plate cutting.

Inventors

  • 권준환
  • 김진환
  • 임종민
  • 강봉근

Assignees

  • 삼성에스디아이 주식회사

Dates

Publication Date
20260513
Application Date
20241106

Claims (20)

  1. An upper cutting section having an upper plate installed on the upper part of the transfer path of an electrode plate transferred along a transfer path, and an upper stripper disposed on the side of the upper plate and supporting the electrode plate by pressing it downward when cutting the electrode plate; A secondary battery electrode plate cutting machine comprising a lower cutting section having a lower section positioned below an upper cutting section with an electrode plate in between and cutting the electrode plate through a cross-movement with an upper section, and a lower stripper positioned on the side of the lower section and supporting the electrode plate upward toward the upper section when cutting the electrode plate.
  2. In paragraph 1, The upper cutting portion above further includes a support body for fixing the upper cut, and A secondary battery electrode plate cutting machine equipped with an elastic supporter that elastically supports an upper stripper downward on a support body.
  3. In paragraph 1, A support body that supports the lower cutting portion is further provided in the above lower cutting portion, and A secondary battery electrode plate cutting machine having an elastic supporter installed on a support body to elastically support a lower stripper upward.
  4. In paragraph 3, A secondary battery electrode plate cutting machine, wherein a stripper guide is further installed on the support body to support the lower stripper and prevent lateral movement of the lower stripper when cutting the electrode plate.
  5. In paragraph 3, the above-mentioned lower plate is a replaceable electrode plate cutter for a secondary battery that is fitted and coupled to a support body.
  6. A secondary battery electrode plate cutting machine according to claim 1, wherein a horizontal surface portion capable of contacting the electrode plate when cutting the electrode plate is formed on the upper surface of the lower plate.
  7. In paragraph 1, the above-mentioned underlay is A secondary battery electrode plate cutting machine comprising a lower body and a blade tip coupled to the lower body and applying shear force to the electrode plate.
  8. A secondary battery electrode plate cutting machine according to claim 4, wherein a friction plate capable of adhering to the bottom surface of the electrode plate is further mounted on the upper surface of the lower stripper.
  9. In paragraph 2, on the support body, A secondary battery electrode plate cutting machine equipped with a stripper guide that supports an upper stripper and prevents lateral movement of the upper stripper when cutting the electrode plate.
  10. In Clause 9, on the bottom surface of the upper stripper, A secondary battery electrode plate cutter further equipped with a friction plate capable of adhering to the electrode plate.
  11. A plurality of transfer rollers that transport an electrode plate to be processed along a transport path; A winding roll for winding the electrode plate that has passed through the above transfer roller; Motor that rotates the winding roll; An electrode plate cutting machine comprising: an upper cutting section having an upper section installed above the transfer path of an electrode plate being transferred along a transfer path, and an upper stripper positioned on the side of the upper section and supporting the electrode plate by pressing it downward when cutting the electrode plate; a lower cutting section having a lower section positioned below the upper cutting section with the electrode plate in between and cutting the electrode plate through a cross-movement with the upper section, and a lower stripper positioned on the side of the lower section and supporting the electrode plate upward toward the upper section when cutting the electrode plate; and A secondary battery manufacturing device including a driving unit for raising and lowering the upper cutting part.
  12. In Paragraph 11, The upper cutting portion above further includes a support body for fixing the upper cut, and A secondary battery manufacturing device having a support body equipped with an elastic supporter that elastically supports an upper stripper downward.
  13. In Paragraph 11, A support body that supports the lower cutting portion is further provided in the above lower cutting portion, and A secondary battery manufacturing device having an elastic supporter installed on a support body to elastically support a lower stripper upward.
  14. In Clause 13, regarding the support body above, A secondary battery manufacturing apparatus further equipped with a stripper guide that supports the lower stripper and prevents lateral movement of the lower stripper when cutting the electrode plate.
  15. In Clause 13, the above-mentioned diagram is A secondary battery manufacturing device that is replaceable and connects to a support body.
  16. In Clause 11, on the upper surface of the above-mentioned underlay, A secondary battery manufacturing device having a horizontal surface formed that can be contacted with the electrode plate when the electrode plate is cut.
  17. In Clause 11, the above-mentioned diagram is A secondary battery manufacturing device comprising a lower body and a blade tip coupled to the lower body and applying shear force to an electrode plate.
  18. In Clause 14, on the upper surface of the lower stripper, A secondary battery manufacturing device further equipped with a friction plate capable of adhering to the bottom surface of an electrode plate.
  19. In Clause 12, on the above-mentioned support body, A secondary battery manufacturing device equipped with a stripper guide that supports an upper stripper and prevents lateral movement of the upper stripper when cutting an electrode plate.
  20. In Clause 19, on the bottom surface of the upper stripper, A secondary battery manufacturing device further equipped with a friction plate capable of adhering to an electrode plate.

Description

Electrode Plate Cutting Machine for Secondary Battery and Secondary Battery Manufacturing Apparatus Equipped with the Electrode Plate Cutting Machine The present invention relates to a plate cutter for cutting a plate during the manufacturing process of a secondary battery and a secondary battery manufacturing apparatus equipped with a plate cutter. Unlike primary batteries, which cannot be recharged, secondary batteries are batteries that can be charged and discharged. Generally, secondary batteries include an electrode assembly consisting of positive and negative electrode plates (hereinafter referred to as electrode plates) and a separator. The electrode plates can be manufactured through coating, rolling, slitting, and notching processes. A plate cutter may be used in the manufacturing process of electrode plates. The plate cutter includes an upper plate and a lower plate, respectively, installed at the top and bottom of the electrode plate being transported along a transport path. The upper and lower plates cut the electrode plate located between them through cross-movement. However, conventional electrode cutting machines have a problem in that the electrode plate moves slightly when cutting. The reason for the electrode plate movement is that there is no separate support mechanism to support the electrode plate during cutting. In addition, the electrode plate movement phenomenon causes the active material to detach from the electrode plate substrate during cutting. Accordingly, conventional electrode cutting machines require additional suction devices or foreign matter collection processes to remove foreign substances. The information described above disclosed in the background technology of this invention is intended only to enhance understanding of the background of the present invention and may therefore include information that does not constitute prior art. The following drawings attached to this specification illustrate preferred embodiments of the present invention and serve to further enhance understanding of the technical concept of the present invention together with the detailed description of the invention provided below; therefore, the present invention should not be interpreted as being limited only to the matters described in the drawings. FIG. 1 is a schematic diagram illustrating an electrode assembly of a secondary battery manufactured using an electrode plate cutting machine according to some embodiment of the present invention. Figure 2 is a drawing showing the internal view of a pouch-type battery to which the electrode assembly of Figure 1 is applied. FIG. 3 is a cross-sectional view of a cylindrical battery produced through a secondary battery manufacturing device according to some embodiment of the present invention. FIG. 4 is a perspective view showing the appearance of a prismatic battery produced through a secondary battery manufacturing device according to some embodiment of the present invention. Figure 5 is a cross-sectional view along line AA of Figure 4. FIGS. 6 to 8 are drawings for explaining the configuration and operation method of a secondary battery manufacturing device equipped with an electrode plate cutting machine according to some embodiments of the present invention. FIG. 9 is a drawing illustrating another example of a lower cutting section in a electrode plate cutting machine according to some embodiment of the present invention. FIG. 10 is a drawing illustrating another example of a lower cutting portion in a plate cutting machine according to some embodiment of the present invention. FIGS. 11 to 14 are drawings showing various types of underlays applicable to a plate cutting machine according to some embodiments of the present invention. FIGS. 15 and 16 are drawings illustrating other examples of upper strippers that can be applied to a plate cutting machine according to some embodiments of the present invention. FIGS. 17 and 18 are drawings illustrating other examples of a lower stripper that can be applied to a plate cutting machine according to some embodiments of the present invention. Preferred embodiments of the present invention will be described in detail below with reference to the attached drawings. Prior to this, terms and 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 present invention, based on the principle that the inventor can appropriately define the concept of the terms to best describe his invention. Accordingly, the embodiments described in this specification and the configurations illustrated in the drawings are merely some of the most preferred embodiments of the present invention and do not represent all of the technical spirit of the present invention; therefore, it should be understood that various equivalents and modifications capable of replacing them m