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CN-122000488-A - Apparatus for manufacturing secondary battery and electrode plate cutting unit

CN122000488ACN 122000488 ACN122000488 ACN 122000488ACN-122000488-A

Abstract

The present disclosure provides an apparatus for manufacturing a secondary battery and an electrode plate cutting unit for manufacturing a secondary battery, which are capable of achieving continuous cutting and preventing productivity from being reduced by supporting a cutting front end after cutting an electrode plate to prevent the electrode plate from falling off a normal conveying path. An apparatus for manufacturing a secondary battery includes a conveying unit configured to convey an electrode plate along a conveying path, a winding unit configured to receive and wind the electrode plate conveyed by the conveying unit, and a cutting unit having a cutting part that cuts the conveyed electrode plate and a separation preventing part that supports a front end portion of a subsequent electrode plate moving toward the winding unit in a conveying direction after the front end portion of the subsequent electrode plate is cut by the cutting part to prevent the subsequent electrode plate from deviating from the conveying path toward the winding unit.

Inventors

  • Quan Junhuan
  • JIN ZHENHUAN
  • Lin Zhongmen
  • JIANG FENGXIN

Assignees

  • 三星SDI株式会社

Dates

Publication Date
20260508
Application Date
20250711
Priority Date
20241106

Claims (20)

  1. 1. An apparatus for manufacturing a secondary battery, comprising: a conveying unit configured to convey the electrode plates along a conveying path; A winding unit configured to receive and wind the electrode plate conveyed by the conveying unit, and And a cutting unit having a cutting portion that cuts the electrode plate being conveyed, and a separation preventing portion that supports a front end portion of a subsequent electrode plate moving toward the winding unit in a conveying direction after the front end portion of the subsequent electrode plate is cut by the cutting portion to prevent the subsequent electrode plate from deviating from the conveying path toward the winding unit.
  2. 2. The apparatus of claim 1, wherein the cutting part comprises an upper cutter installed above the conveying path of the electrode plate, and a lower cutter installed below the conveying path to cut the electrode plate by a cross motion with the upper cutter, and The separation preventing portion supports the front end portion of the subsequent electrode plate in the conveying direction to prevent the front end portion from sagging downward due to gravity.
  3. 3. The apparatus according to claim 2, wherein the separation preventing portion includes: A lower moving guide supporting the lower cutter while being mounted on a side of the lower cutter and being movable upward and downward, and And a first guide driving part configured to move the lower moving guide upward and downward.
  4. 4. The apparatus of claim 3, wherein the first guide driving part simultaneously moves the lower moving guide upward when the upper cutter moves upward after the cutting part cuts the electrode plate so that the lower moving guide provides an upward supporting force to the front end portion of the subsequent electrode plate.
  5. 5. The method according to claim 2, wherein the separation preventing portion includes: an upper moving guide installed to be movable upward and downward on a side of the upper cutter, and And a second guide driving part configured to move the upper moving guide upward and downward.
  6. 6. The apparatus of claim 5, wherein the upper moving guide is located above the conveying path of the electrode plate, and After the cutting part cuts the electrode plate, when the upper cutter moves upward, the second guide driving part moves the upper moving guide downward so that the upper moving guide provides an upward supporting force to the front end portion of the subsequent electrode plate.
  7. 7. The apparatus of claim 5 or 6, wherein a lower fixed guide fixedly supporting the lower cutter and contacting the upper moving guide when the upper moving guide moves downward is further vertically installed below the upper moving guide.
  8. 8. The apparatus of claim 3 or 4, wherein an upper fixed guide is further vertically installed above the lower moving guide, the upper fixed guide being in contact with the lower moving guide when the lower moving guide moves upward.
  9. 9. The apparatus of claim 3 or 4, wherein a surface of the lower moving guide is coated with an antistatic layer.
  10. 10. The apparatus of claim 5 or 6, wherein a surface of the upper moving guide is coated with an antistatic layer.
  11. 11. An electrode plate cutting unit comprising: An upper cutter installed above a transfer path of the electrode plate transferred along the transfer path; a lower cutter installed below the conveying path to cut the electrode plate, and And a separation preventing part supporting front end portions of the subsequent electrode plates cut by the upper and lower cutters to prevent the subsequent electrode plates from sagging downward and deviating from the conveying path.
  12. 12. The electrode plate cutting unit according to claim 11, wherein the separation preventing part supports the front end portion of the subsequent electrode plate in a conveying direction to prevent the front end portion from sagging downward due to gravity.
  13. 13. The electrode plate cutting unit according to claim 12, wherein the separation preventing part comprises: A lower moving guide supporting the lower cutter while being installed at a side portion of the lower cutter and being movable upward and downward, and And a first guide driving part configured to move the lower moving guide upward and downward.
  14. 14. The electrode plate cutting unit according to claim 13, wherein the first guide driving part simultaneously moves the lower moving guide upward when the upper cutter moves upward after the cutting part cuts the electrode plate so that the lower moving guide provides upward supporting force to the front end portion of the subsequent electrode plate.
  15. 15. The electrode plate cutting unit according to claim 12, wherein the separation preventing part comprises: an upper moving guide installed to move up and down on a side of the upper cutter, and And a second guide driving part configured to move the upper moving guide upward and downward.
  16. 16. The electrode plate cutting unit according to claim 15, wherein the upper moving guide is located above the conveying path of the electrode plate, and After the cutting part cuts the electrode plate, when the upper cutter moves upward, the second guide driving part moves the upper moving guide downward so that the upper moving guide provides an upward supporting force to the front end portion of the subsequent electrode plate.
  17. 17. The electrode plate cutting unit according to claim 15 or 16, wherein a lower fixing guide fixedly supporting the lower cutter and contacting the upper moving guide when the upper moving guide moves downward is further vertically installed below the upper moving guide.
  18. 18. The electrode plate cutting unit according to claim 13 or 14, wherein an upper fixing guide is further vertically installed above the lower moving guide, the upper fixing guide being in contact with the lower moving guide when the lower moving guide moves upward.
  19. 19. The electrode plate cutting unit according to claim 13 or 14, wherein a surface of the lower moving guide is coated with an antistatic layer.
  20. 20. The electrode plate cutting unit according to claim 15 or 16, wherein a surface of the upper moving guide is coated with an antistatic layer.

Description

Apparatus for manufacturing secondary battery and electrode plate cutting unit Technical Field The present disclosure relates to manufacturing a secondary battery, and more particularly, to an apparatus for manufacturing a secondary battery and an electrode plate cutting unit for manufacturing a secondary battery. Background Unlike primary batteries, which cannot be recharged, secondary batteries are batteries that can be charged and discharged. The secondary battery may generally include an electrode assembly including a positive electrode plate, a separator, and a negative electrode plate, a case (or can) for accommodating the electrode assembly, a substrate tab formed by extending an uncoated portion of each electrode plate of the electrode assembly, an external terminal connected to the substrate tab, and the like. The electrode assembly received in the case includes a stack type and a pole core type. The electrode core type electrode assembly is manufactured by winding continuously supplied electrode plates using a winding device. The winding device comprises an electrode plate cutting machine. The electrode plate cutter is a device for cutting electrode plates at designed intervals, and includes an upper cutter and a lower cutter. However, the conventional electrode plate cutting device cuts the electrode plate, and then the electrode plate may be easily deviated downward by the tension of the cutting front end. The above information disclosed in this background section is for enhancement of understanding of the background of the disclosure and, therefore, it may contain information that does not form the related art (or prior art). Disclosure of Invention The present disclosure is directed to providing an apparatus for manufacturing a secondary battery and an electrode plate cutting unit for manufacturing a secondary battery, which are capable of achieving continuous cutting by supporting a cutting front end after cutting an electrode plate to prevent the electrode plate from falling off a normal conveying path. According to an aspect of the present disclosure, there is provided an apparatus for manufacturing a secondary battery, including a conveying unit configured to convey an electrode plate along a conveying path, a winding unit configured to receive and wind the electrode plate conveyed by the conveying unit, and a cutting unit having a cutting part that cuts the conveyed electrode plate and a separation preventing part that supports a front end portion of a subsequent electrode plate moving toward the winding unit in a conveying direction after the front end portion of the subsequent electrode plate is cut by the cutting part to prevent the subsequent electrode plate from deviating from the conveying path toward the winding unit. According to another aspect of the present disclosure, there is provided an electrode plate cutting unit including an upper cutter installed above a transfer path of an electrode plate transferred along the transfer path, a lower cutter installed below the transfer path to cut the electrode plate, and a separation preventing part supporting front end portions of the electrode plate cut by the upper cutter and the lower cutter to prevent the electrode plate from sagging downward and deviating from the transfer path. Aspects and features of the present disclosure are not limited to those described herein, and other aspects and features not specifically mentioned will be apparent to those of skill in the art from the following description of the present disclosure. Drawings The present disclosure, together with other objects, features, and advantages thereof, will become apparent to those skilled in the art by describing in detail exemplary embodiments thereof with reference to the attached drawings, in which: Fig. 1 is a schematic view illustrating an electrode assembly of a secondary battery that may be manufactured by an apparatus for manufacturing a secondary battery according to an embodiment of the present disclosure; fig. 2 is a view illustrating the inside of a pouch-type battery to which the electrode assembly of fig. 1 is applied; Fig. 3 is a sectional view illustrating a cylindrical battery manufactured by an apparatus for manufacturing a secondary battery according to an embodiment of the present disclosure; Fig. 4 is a perspective view illustrating the exterior of a prismatic battery that may be manufactured by an apparatus for manufacturing a secondary battery according to an embodiment of the present disclosure; Fig. 5 is a sectional view taken along line A-A' of fig. 4. Fig. 6 to 10 are views for describing a configuration and an operation method of an apparatus for manufacturing a secondary battery to which a cutting unit according to an embodiment of the present disclosure is applied; Fig. 11 to 13 are views illustrating another example of an apparatus for manufacturing a secondary battery according to an embodiment of the present disclosure; Fig. 14 to