WO2022203120A1 - Système d'entaillage au laser pour la fabrication de batteries rechargeables - Google Patents

Système d'entaillage au laser pour la fabrication de batteries rechargeables Download PDF

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Publication number
WO2022203120A1
WO2022203120A1 PCT/KR2021/007218 KR2021007218W WO2022203120A1 WO 2022203120 A1 WO2022203120 A1 WO 2022203120A1 KR 2021007218 W KR2021007218 W KR 2021007218W WO 2022203120 A1 WO2022203120 A1 WO 2022203120A1
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WIPO (PCT)
Prior art keywords
electrode
laser
pattern
jig
drum
Prior art date
Application number
PCT/KR2021/007218
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English (en)
Korean (ko)
Inventor
정영태
강용진
변영희
이혁용
장기현
Original Assignee
주식회사 디에이테크놀로지
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Publication of WO2022203120A1 publication Critical patent/WO2022203120A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B5/00—Cleaning by methods involving the use of air flow or gas flow
    • B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/352—Working by laser beam, e.g. welding, cutting or boring for surface treatment
    • B23K26/359—Working by laser beam, e.g. welding, cutting or boring for surface treatment by providing a line or line pattern, e.g. a dotted break initiation line
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/36—Removing material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/36—Electric or electronic devices

Definitions

  • the present invention relates to an apparatus for manufacturing a secondary battery, and more particularly, by irradiating a laser to the edge of the electrode horizontally to the ground while continuously transporting the electrode of the secondary battery to support the electrode when processing the electrode tab. It relates to a laser notching system for manufacturing secondary batteries.
  • secondary batteries are prepared by coating an electrode mixture in which an electrode active material, a conductive agent, a binder, etc. are mixed on an electrode current collector, drying the electrode, and stacking the prepared electrode together with a separator, and then the battery together with an electrolyte. It is completed by embedding and sealing in a case.
  • the electrode is manufactured by processing an electrode tab by notching an electrode prepared by coating an electrode active material on an electrode current collector having a long sheet shape, and then cutting the electrode to a desired length.
  • the notching process of the electrode is performed by a pattern jig or roller that includes a cutting part having a shape corresponding to the electrode tab. Recently, a laser is irradiated to the electrode to solve the lifespan problem of the pattern press mold and to easily change the shape of the electrode tab. By doing this, this notching process is also performed.
  • domestic Patent Registration No. 10-1774262 discloses an electrode tab processing apparatus for cutting the other side except the electrode tab by irradiating a laser perpendicular to the first surface of the electrode (metal current collector). .
  • the conventional apparatus for processing an electrode tab using a laser employs a method of processing the electrode tab by irradiating the laser in a vertical direction to the surface of the electrode moving horizontally, the residue (scrap) or the cutting process of the cut side of the electrode Fine foreign substances generated in the electrode are accumulated on the upper surface of the electrode and are accumulated in the jig supported by the lower side of the electrode, reducing the fixing force of the jig, and the laser is disturbed on the electrode by the residue and foreign substances, and the desired electrode tab In some cases, it is not cut in the shape of , and there is a problem of generating defects due to foreign substances accumulated on the electrode surface.
  • the present invention is to solve the above problem, and an object of the present invention is to irradiate a laser horizontally with respect to the ground and notching an electrode tab on one side of the electrode to eliminate scrap and foreign substances generated in the notching process. It is to provide a laser notching system for manufacturing a secondary battery that can be removed by naturally falling downward and can improve productivity and precision.
  • a laser notching system for manufacturing a secondary battery according to the present invention for achieving the above object includes: a laser irradiator for irradiating a laser; a jig base fixedly installed on one side of the laser irradiator; The electrode is guided while being in close contact with the outer surface, and is made of a cylindrical shape with tapped holes formed along the circumferential direction through which the laser passes on the outer surface of one side or both sides, and a rotating shaft rotatably connected to the jig base is provided at the center of both sides. , a pattern jig for supporting and guiding the electrode while rotating around the rotation axis; and a rotation unit that transmits a rotational force to the rotation shaft of the pattern jig to rotate the pattern jig.
  • the pattern jig is a guide drum having a cylindrical shape that is guided while the electrode is in close contact with the outer surface, is continuously disposed outside one end of the guide drum, and has a tab processing hole for processing an electrode tab on one side of the electrode in the circumferential direction.
  • a cylindrical pattern drum formed in a zigzag shape along with an empty space therein, and a first coupling disposed at the outer end of the pattern drum to shield the inner space of the pattern drum, and to which the pattern drum is relatively rotatably connected It may include a disk and a first suction pipe that communicates with the inner space of the pattern drum through the first coupling disk and is connected to an intake pump that generates a suction force.
  • a plurality of micro vacuum holes for temporarily fixing one side of the electrode by vacuum adsorption along the periphery of the tapped hole may be formed through the outer surface of the pattern drum.
  • the pattern jig is continuously arranged outside the other end of the guide drum, an edge cutting hole through which the laser passes is formed in a straight line along the circumferential direction, and an edge processing drum having an empty space formed therein, and the edge a second coupling disk disposed at the outer end of the processing drum to shield the inner space of the edge processing drum and to which the edge processing drum is relatively rotatably connected; and the inner space of the edge processing drum through the second coupling disk; It may further include a second suction pipe that is in communication with the intake pump for generating suction force.
  • the laser notching system for manufacturing a secondary battery according to another aspect of the present invention is disposed below or above the tapped hole of the pattern jig to suck the scrap cut from the edge of the electrode and further include a scrap collecting unit for discharging to the outside.
  • a laser notching system for manufacturing a secondary battery includes two side plates installed in contact with the outer surface of the pattern jig from the lower portion of the pattern jig, respectively, and a rear plate disposed behind the side plate and a dust collecting unit including a dust collecting box comprising: A scrap guide plate having a curved surface for guiding scrap while extending toward the scrap collecting unit may be installed.
  • a laser notching system for manufacturing a secondary battery according to another aspect of the present invention is installed so as to be close to the outer surface of the pattern jig, and a spray nozzle for spraying air to the outer surface of the pattern jig, and is disposed on the side of the spray nozzle. It may further include a dry cleaning unit including a cleaning nozzle having a suction nozzle for sucking air and foreign substances.
  • the dry cleaning unit may further include a tubular dust collecting housing which is installed to surround the outside of the cleaning nozzle and has a lower end adjacent to the outer surface of the pattern jig open.
  • the spray nozzle unit of the dry cleaning unit may spray ultrasonically excited air.
  • the cleaning unit may be installed along the longitudinal direction of the pattern jig from one end to the other end of the pattern jig.
  • a second laser notching system for manufacturing a secondary battery according to another aspect of the present invention is installed on the outside of the pattern jig to simultaneously or continuously perform a predetermined process operation on the electrode wound on the pattern jig separately from the laser irradiator. It may further include a process group.
  • the laser is irradiated horizontally from the laser irradiator, and the electrode is supported by a drum-type pattern jig while moving in the vertical direction at the laser irradiation position, and both sides of the electrode are notched, so scrap generated during the laser notching process It can be removed at the same time as the process is carried out by dropping the dust and dirt to the lower side.
  • the electrode tab when the electrode tab is processed by irradiating a laser on one side of the electrode, the one side of the electrode is vacuum-adsorbed and fixed in the plurality of micro vacuum holes formed in the pattern drum, so vibration is almost generated at the one side of the electrode.
  • the electrode tab can be precisely processed because it is not used.
  • FIG. 1 is a side view of a laser notching system for manufacturing a secondary battery according to an embodiment of the present invention.
  • FIG. 2 is a perspective view illustrating an embodiment of a pattern jig constituting the laser notching system shown in FIG. 1 .
  • FIG. 3 is a perspective view of the pattern jig shown in FIG. 2 viewed from another direction.
  • FIG. 4 is a cross-sectional view of the pattern jig shown in FIG.
  • FIG. 5 is an exploded perspective view illustrating a pattern drum constituting the pattern jig shown in FIG. 2 .
  • FIG. 6 is a perspective view illustrating an embodiment of a laser irradiator and a scrap collecting unit constituting the laser notching system shown in FIG. 1 .
  • FIG. 7 is a side view of a laser notching system for manufacturing a secondary battery according to another embodiment of the present invention.
  • FIG. 8 is a cross-sectional view of the dry cleaning unit constituting the laser notching system according to the present invention.
  • FIG. 9 is a perspective view showing another embodiment of the dry cleaning unit constituting the laser notching system according to the present invention.
  • FIG. 10 is a side view of a laser notching system for manufacturing a secondary battery according to another embodiment of the present invention.
  • the laser notching system for manufacturing a secondary battery two laser irradiators 100 for irradiating a laser horizontally with respect to the ground, one side of the laser irradiator 100
  • the jig base 200 fixedly installed on the jig base 200, the pattern jig 300 rotatably installed on the jig base 200 to guide the electrode E, the rotational force on the rotation shaft 350 of the pattern jig 300 center
  • the electrode (E) is wound in the form of a roll and is released by the electrode transfer device and moves at a constant speed and pitch while passing between the laser irradiator 100 and the pattern jig 300. , both sides of the electrode (E) are cut to a predetermined size and shape by the laser emitted from the laser irradiator 100 to form an electrode tab on one side.
  • Two laser irradiators 100 are installed at a predetermined interval on the front side of the pattern jig 300, and irradiate lasers on both sides of the electrode E in a predetermined pattern to form electrode tabs on one side, and the other One side is cut in a straight line to adjust the width of the electrode.
  • the laser irradiator 100 is configured to perform a notching process by irradiating a laser in a generally horizontal direction with respect to the ground. This is to eliminate the phenomenon of accumulation in the pattern jig 300 .
  • a jig base 200 for installing the pattern jig 300 is installed on one side of the laser irradiator 100 .
  • the jig base 200 may be formed of a metal frame and a flat plate so as to stably support the pattern jig 300 and the components connected to the pattern jig 300 .
  • the pattern jig 300 is in the form of a cylindrical drum as a whole and is installed to be spaced apart a certain distance on one side of the laser irradiator 100, and the electrode (E) transferred from the upper side to the lower side is in close contact with the outer surface of the pattern jig 300 and passes while passing. is supported
  • the pattern jig 300 minimizes the frictional force between the electrode (E) and the pattern jig 300 by supporting the electrode (E) while rotating with respect to the jig base 200 during the laser notching process for the electrode (E), and the electrode ( E) It is configured to minimize damage or wrinkles.
  • the pattern jig 300 has a cylindrical guide drum 310 that is guided while the electrode E is in close contact with the outer surface, and the guide drum 310 is continuously disposed outside one end of the guide drum 310 and is disposed on one side of the electrode E.
  • a cylindrical pattern drum 320 in which a tab processing hole 321 for processing a tab is formed in a zigzag shape along the circumferential direction and an empty space 323 is formed therein, and the other end of the guide drum 310 . It includes an edge processing drum 330 disposed continuously on the outside and having an edge cutting hole 331 for cutting the other side of the electrode E in a straight line shape along the circumferential direction.
  • the pattern jig 300 is disposed at the outer end of the pattern drum 320 to shield the inner space 323 of the pattern drum 320 and a first coupling disk to which the pattern drum 320 is rotatably connected. 325) and a first suction pipe 326 connected to an intake pump (not shown) that communicates with the inner space 323 of the pattern drum 320 through the first coupling disk 325 and generates suction force;
  • a second coupling disk 335 disposed at the outer end of the edge processing drum 330 to shield the inner space 333 of the edge processing drum 330 and to which the edge processing drum 330 is rotatably connected and , It communicates with the inner space 333 of the edge processing drum 330 through the second coupling disk 335 and further includes a second suction pipe 336 connected to an intake pump (not shown) for generating a suction force.
  • the guide drum 310, the pattern drum 320, and the edge processing drum 330 are formed in a cylindrical shape having the same diameter as each other, and the pattern drum 320 and the edge processing drum 330 are formed at both ends of the guide drum 310. It is formed continuously.
  • the guide drum 310 and the pattern drum 320 and the center of the edge processing drum 330 are coupled with the rotation shaft 350 passing through, and as the rotation shaft 350 rotates, the guide drum 310 and the pattern drum 320 are coupled. And the edge processing drum 330 is rotated at the same time to support the electrode (E) during laser notching processing.
  • the guide drum 310 is made of a long circular drum having a length capable of supporting the middle portion in the width direction between both ends of the electrode (E).
  • the pattern drum 320 and the edge processing drum 330 are coupled to both ends of the guide drum 310 to support both ends of the electrode E, and are formed of a circular drum in which an empty space is formed.
  • the pattern drum 320 and the edge processing drum 330 may be manufactured separately from the guide drum 310 and then coupled to both ends of the guide drum 310, but differently, the pattern drum 320 and the edge processing drum ( 330) may be integrally manufactured.
  • the pattern drum 320 and the edge processing drum 330 are manufactured separately from the guide drum 310 and coupled to the guide drum 310, the pattern drum 320 according to the type or size of the electrode E to be processed. ) and the edge processing drum 330 may be replaced with the guide drum 310 to perform notching processing.
  • the pattern drum 320 serves to support one side of the electrode E so that the electrode tab can be notched on one side of the electrode E, and on the outer surface of the pattern drum 320, one side laser irradiator ( 100), a tapped hole 321 through which the laser emitted from is passed is formed to penetrate inside and outside.
  • the tapped hole 321 is formed in a zigzag shape along the circumferential direction of the pattern drum 320 to correspond to the electrode tab shape of the electrode (E).
  • the tapped hole 321 is formed to communicate with the inner space 323 of the pattern drum 320 .
  • the one side of the electrode (E) is fixed to the outer surface of the pattern drum (320) to perform accurate electrode tab processing (
  • a plurality of micro vacuum holes 322 for temporarily fixing one side of the electrode E by vacuum adsorption along the periphery of the tapped hole 321 are formed to penetrate inside and outside.
  • the edge processing drum 330 cuts the other side of the electrode (E) in a straight line to support the other side of the electrode (E) so that the width of the electrode (E) can be processed to the correct size.
  • an edge cutting hole 331 through which the laser emitted from the other laser irradiator 100 passes is formed in a straight line along the circumferential direction.
  • the edge cutting hole 331 is formed to communicate with the space 333 of the edge processing drum 330 .
  • the spaces 323 and 333 of the pattern drum 320 and the edge processing drum 330 are shielded by the first coupling disk 325 and the second coupling disk 335 .
  • the first coupling disk 325 and the second coupling disk 335 are connected to the first suction pipe 326 and the second suction pipe 336 connected to the intake pump (not shown), respectively, and tapped hole Fume or dust introduced into the space 333 through the 321 and the edge cutting hole 331 is sucked through the first suction pipe 326 and the second suction pipe 336 and can be discharged to the outside.
  • the pattern drum 320 and the edge processing drum 330 rotate during laser notching processing, the pattern drum 320 and the edge processing drum 330 are fixedly installed on the jig base 200, respectively.
  • the first coupling disk 325 and the second coupling disk 335 are preferably coupled to be rotatable relative to each other.
  • the rotation unit for rotating the guide drum 310, the pattern drum 320, and the edge processing drum 330 is a driving motor 400 installed to be connected to the end of the rotation shaft 350 on the jig base 200.
  • the driving motor 400 may be directly connected to the rotating shaft 350, but may be connected to the rotating shaft 350 through a power transmission mechanism such as a pulley, a belt, and a gear to transmit power.
  • the dust collecting unit 500 collects foreign substances such as dust and/or scrap generated during laser notching on both sides of the electrode E.
  • the dust collecting unit 500 has the upper portion of the pattern Two side plates 511 that are respectively connected to the outer surfaces of the drum 320 and the edge processing drum 330, and a rear plate that partitions a space together with the side plate 511 while being disposed behind the side plate ( 512), and a dust inhaler 530 disposed at the lower end of the dust collecting box 510 to suck and collect dust and scrap falling from the inside of the dust collecting box 510 to the lower side. .
  • a scrap collecting unit 550 for sucking and removing scrap of the electrode that is adsorbed and transferred to the pattern drum 320 and the edge processing drum 330 is installed on one side of the lower end of the dust collecting unit 500 .
  • the scrap collecting unit 550 is in the form of a hose or pipe having one end disposed adjacent to the lower portion of the pattern drum 320 and the edge processing drum 330 and the other end connected to a suction device (not shown) such as a vacuum pump. , by generating a strong suction force, the scrap adsorbed on the outer surfaces of the pattern drum 320 and the edge processing drum 330 is sucked and removed.
  • the scrap collecting unit 550 suctions and removes the scrap
  • the scrap is disposed at the front end of the dust collecting box 510 of the dust collecting unit 500 so that the scrap can be smoothly introduced toward the inlet of the scrap collecting unit 550 .
  • a scrap guide plate 520 having a curved surface for guiding scrap while extending toward the inlet of the collecting unit 550 may be installed.
  • the scrap guide plate 520 is made of a curved plate having a curvature substantially equal to or slightly larger than the curvature of the pattern drum 320 and the edge processing drum 330, and the lower end of the pattern drum 320 and the edge processing drum ( 330) to guide the scrap toward the inlet of the scrap collecting unit 550 and transfer the suction force only to the lower part of the pattern drum 320 and the edge processing drum 330 to improve the scrap collecting performance function to make
  • the scrap guide plate 520 is configured as a curved plate extending to the lower end of the pattern drum 320 and the edge processing drum 330 as described above, when the suction force is generated through the scrap collecting unit 550, the It is possible to minimize the occurrence of vibration, and there is an effect that can prevent deterioration of the precision of notching processing due to the occurrence of vibration.
  • the strong air suction force generated by the scrap collecting unit 550 is A phenomenon in which the electrode (E) vibrates by affecting the laser irradiation position may occur, and thus processing defects may occur.
  • the upper end position of the scrap collecting unit 550 is spaced a predetermined distance from the laser irradiation position in the horizontal direction, it is possible to suppress the vibration of the electrode E at the laser processing position.
  • the scrap collecting unit 550 is disposed under the pattern jig 300 , but as shown in FIG. 7 in another embodiment, the scrap collecting unit 550 is disposed above the pattern jig 300 .
  • the scrap collecting unit 550 is disposed above the position where the electrode wound on the pattern jig 300 is separated from the pattern jig 300 .
  • the scrap collecting unit 550 is the pattern of the pattern jig 300 .
  • a dry cleaning unit 600 capable of sucking and removing foreign substances such as dust accumulated on the outer surface of the pattern jig 300 may be configured on one side of the pattern jig 300 .
  • the dry cleaning unit 600 is a plurality of cleaning nozzles 610 that are installed to be close to the outer surfaces of the pattern drum 320 and the edge processing drum 330 of the pattern jig 300, and, It is installed to surround the outside of each cleaning nozzle 610 and may include a tubular dust collecting housing 620 in which the lower end adjacent to the outer surface of the pattern drum 320 and the edge processing drum 330 is opened.
  • the cleaning nozzle 610 includes a spray nozzle part 611 for spraying air to the outer surface of the pattern jig 300, and a suction nozzle part 612 disposed on the side of the spray nozzle part 611 to suck air and foreign substances. to provide Therefore, the pattern jig 300 by spraying air at high pressure through the injection nozzle unit 611 to remove foreign substances attached to the outer surface of the pattern jig 300, and then sucking air and foreign substances through the suction nozzle unit 612. It can be dry cleaned by removing foreign substances attached to the outer surface of the unit.
  • the injection nozzle unit 611 When the air is sprayed at high pressure through the injection nozzle unit 611 to separate the foreign substances attached to the outer surface of the pattern jig 300, in order to allow the foreign substances to be separated more smoothly, the injection nozzle unit 611 has ultrasonic vibration It may be configured to spray the used air.
  • two dry cleaning units 600 are installed outside the pattern drum 320 and the edge processing drum 330 of the pattern jig 300, but as shown in FIG. 9, the dry cleaning unit 600 ) may be installed long along the longitudinal direction of the pattern jig 300 from one end of the pattern jig 300 to the other end to remove foreign substances throughout the pattern jig 300 .
  • a laser notching system as described above works as follows.
  • the electrode (E) to be processed is wound in the form of a roll on the shaft of the loader part configured on the upstream side of the process direction, and is released by the electrode transfer device while maintaining tension and moving at a constant speed and pitch, the pattern jig (300). It passes from the upper side to the lower side while being in close contact with the outer surface.
  • both sides of the electrode (E) are in close contact with the outer surfaces of the pattern drum 320 and the edge processing drum 330, and the inner portions of both sides of the electrode (E) are guided while being in close contact with the outer surface of the guide drum 310. do.
  • the lasers emitted from the two laser irradiators 100 are irradiated to both sides of the electrode E in close contact with the pattern drum 320 and the edge processing drum 330 , respectively.
  • the laser emitted from the laser irradiator 100 facing the pattern drum 320 is irradiated with a laser in a pattern corresponding to the tapped hole 321 of the pattern drum 320 to form an electrode on one side of the electrode (E).
  • the tab is notched, and the laser emitted from the laser irradiator 100 facing the edge processing drum 330 irradiates the laser toward the edge cutting hole 331 of the edge processing drum 330 to one side of the electrode (E). Cut the part in a straight line.
  • the fumes and dust generated in the tapped hole 321 and the edge cutting hole 221 part the first suction pipe 326 and the second suction pipe 336. After being sucked into the inner spaces 323 and 333 of the pattern drum 320 and the edge processing drum 330 by the suction force generated through the first suction pipe 326 and the second suction pipe 336, it is discharged and removed. do.
  • the scrap generated by cutting both sides of the electrode E by the laser is transferred to the outer surfaces of the pattern drum 320 and the edge processing drum 330 and is sucked into the scrap collecting unit 550 and collected.
  • the electrodes E are wound around the shaft of the off-loader configured on the downstream side in the process direction and recovered.
  • the one side of the electrode (E) is vacuumed into the plurality of micro vacuum holes 322 formed in the pattern drum 320 . Since it is adsorbed and fixed, the vibration phenomenon hardly occurs on one side of the electrode E, so that the electrode tab can be precisely processed.
  • the vacuum pressure through the micro vacuum hole 322 of the pattern drum 320 may be implemented by the suction force generated through the first suction pipe 326 .
  • the laser since the laser is horizontally irradiated from the laser irradiator 100, and the electrode E is moved in the vertical direction at the laser irradiation position and is wound and supported on the drum-type pattern jig 300, during the laser notching process.
  • the generated scrap and dust naturally fall downward and can be removed at the same time as the process is performed.
  • the electrode (E) Since the electrode (E) is wound and transferred to the pattern jig 300 of the laser notching system as described above, the electrode (E) wound on the pattern jig 300 while the laser notching fixation by the laser irradiator 100 is performed. ), by continuously performing other processes such as a marking process, a plurality of processes can be performed in one pattern jig 300 without a position change due to the meandering of the electrode E. That is, after the laser notching process, other processes such as a marking process are performed while continuously transporting the electrode E. In the process where the electrode E is transported through several drums, the position is slightly changed due to meandering, etc. The precision of the subsequent process may be reduced or defects may occur.
  • the electrode (E) is transferred while being wound around the pattern jig 300 as shown in FIG. 10 , other process operations such as a marking process on one side of the laser irradiator 100 or on one side of the pattern jig 300 are performed.
  • a second processing machine 700 such as a marking device that is performed simultaneously or continuously with the notching operation, it is possible to obtain the advantage that multiple operations are possible in the pattern jig 300 .
  • the present invention can be applied to the manufacture of secondary batteries, and in particular, it can be applied to laser notching equipment for electrodes that processes electrode tabs by irradiating a laser to the edge of the electrode film in a predetermined pattern while continuously transporting the electrode film of the secondary battery. have.

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  • Optics & Photonics (AREA)
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Abstract

La présente invention concerne un système d'entaillage au laser pour la fabrication de batteries rechargeables, des languettes d'électrode étant formées sur un côté d'une électrode par un processus d'entaillage par une irradiation horizontale avec un laser par rapport au sol, ce qui permet un retrait aisé de débris et de corps étrangers générés pendant le processus d'entaillage et améliore la productivité et la précision. Le système d'entaillage au laser pour la fabrication de batteries rechargeables, selon la présente invention, peut comprendre : un irradiateur laser pour irradier avec un laser ; une base de gabarit installée de manière fixe sur un côté de l'irradiateur laser ; un gabarit de motif ayant une forme cylindrique avec une surface externe, une électrode étant intimement collée à la surface externe devant être guidée, et des trous de traitement de languette à travers lesquels le laser passe sont formés dans une partie latérale ou les deux parties latérales de la surface externe le long d'une direction circonférentielle, et ayant un axe de rotation ayant les deux parties centrales reliées de manière rotative à la base de gabarit de façon à porter et guider l'électrode en même temps tout en réalisant un mouvement de rotation autour de l'axe de rotation ; une unité de pivotement qui met en rotation le gabarit de motif par le transfert d'une force de rotation à l'axe de rotation du gabarit de motif ; et une unité de capture de débris qui est agencée au-dessous des trous de traitement de languette du gabarit de motif pour absorber et éliminer des déchets et des corps étrangers découpés à partir de parties latérales de l'électrode.
PCT/KR2021/007218 2021-03-22 2021-06-09 Système d'entaillage au laser pour la fabrication de batteries rechargeables WO2022203120A1 (fr)

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