Electrode grooving apparatus and electrode grooving method using same

Abstract

Disclosed are an electrode grooving apparatus and an electrode grooving method using the same, the electrode grooving apparatus including: a transfer jig configured to face one surface of an electrode to be grooved so as to support the electrode; the laser unit is configured to emit laser towards the electrode so as to cut a preset area of the electrode; a pattern jig disposed on one side of the transfer jig, the pattern jig configured to support one edge of the electrode, the pattern jig including a first surface formed with a first cutout portion configured to pass the laser light emitted by the laser unit therethrough; and a suction unit configured to capture debris generated in the cutting process by the laser, in which the suction unit includes a first suction portion located below the pattern jig and a second suction portion located at a side surface of the pattern jig.

Description

Technical Field

[0001] This application claims the benefit of priority of Korean Patent Application No. 2023-0152101, filed on November 6, 2023, the entire disclosure of which is incorporated herein by reference.

[0002] The present invention relates to an electrode grooving device and an electrode grooving method using the same, and more particularly, to an electrode grooving device for processing an uncoated portion of an electrode sheet to form an electrode tab and an electrode grooving method using the same. Background Art

[0003] With the recent development of alternative energy due to air pollution and energy depletion caused by the use of fossil fuels, the demand for secondary batteries capable of storing generated electrical energy has increased. Secondary batteries that can be charged and discharged are closely used in daily life. For example, secondary batteries are used in mobile devices, electric vehicles, and hybrid electric vehicles.

[0004] To meet the user's demand for secondary batteries, multiple battery cells are provided in small devices, while a battery module including multiple battery cells electrically connected to each other or a battery pack including multiple battery modules is used in vehicles and the like.

[0005] In addition, according to the shape of the battery case, lithium secondary batteries are classified into cylindrical secondary batteries having an electrode assembly installed in a cylindrical metal can, prismatic secondary batteries having an electrode assembly installed in a prismatic metal can, and pouch-shaped secondary batteries having an electrode assembly installed in a pouch-shaped case made of an aluminum laminate.

[0006] The electrode assembly is formed by stacking a positive electrode and a negative electrode with a separator interposed therebetween, and the positive electrode and the negative electrode are each manufactured through a process of forming an electrode tab on a corresponding one of a positive electrode sheet and a negative electrode sheet and a process of cutting the electrode sheet into unit electrodes.

[0007] In particular, in the process of forming the electrode tab, a laser is emitted to remove the remaining portion other than the electrode tab from the uncoated portion of the electrode sheet. If scattered debris adheres to the electrode at this time, the electrode becomes defective. For this reason, all generated debris must be reliably captured and removed.

[0008] Figure 1 is a view showing the conventional removal of debris during laser grooving. As Figure 1As shown, a purging unit 40 including a plurality of air knives 41 is provided in the main body 10 and is in communication with the suction unit 30. When the purging unit 40 purges air and debris in a direction parallel to the width direction of the electrode sheet 1 being conveyed, the purged air and debris are sucked into the suction unit 30 provided at a position facing the purging unit 40 and in communication with the purging unit, thereby removing the debris.

[0009] However, since the amount of debris introduced into the suction unit 30 depends on the purging force of the purging unit 40 provided facing the suction unit, some or a large amount of debris may not be introduced into the suction unit 30.

[0010] (Prior Art Document)

[0011] (Patent Document 1) Korean Patent Application Publication No. 2015-0062847 Summary of the Invention

[0012] Technical Problem

[0013] In view of the above problems, the present invention is made. The object of the present invention is to provide an electrode slitting device capable of reliably capturing and removing debris generated during electrode slitting using a laser, and an electrode slitting method using the electrode slitting device.

[0014] Technical Solution

[0015] To achieve the above object, an electrode slitting device according to the present invention includes: a transfer jig 100 configured to face one surface of the electrode E to be slit so as to support the electrode E; a laser unit 200 configured to emit a laser toward the electrode E to cut a predetermined area of the electrode; a pattern jig 300 provided on one side of the transfer jig 100, the pattern jig configured to support one edge of the electrode E, the pattern jig including a first surface 310 formed with a first cut portion 311, the first cut portion 311 configured to allow the laser emitted by the laser unit 200 to pass therethrough; and a suction unit 400 configured to capture debris generated during the cutting process by the laser, wherein the suction unit 400 includes a first suction portion 410 located below the pattern jig 300 and a second suction portion 420 located at a side surface of the pattern jig 300.

[0016] In addition, in the electrode grooving device of the present invention, the pattern jig 300 may include: a first surface 310 configured to face the electrode E, the first surface having a first cutout portion 311 formed in a predetermined shape; a second surface 320 located on one edge of the first surface 310, the second surface having a second cutout portion 321 formed in a predetermined shape; a third surface 330 located on the other edge of the first surface 310, the third surface having a third cutout portion 331 formed in a predetermined shape; a fourth surface 340 configured to connect the edges of the first surface 310, the second surface 320, and the third surface 330 to each other, the fourth surface having a fourth cutout portion 341 formed in a predetermined shape; and a fifth surface 350 configured to connect the edges of the second surface 320, the third surface 330, and the fourth surface 340 to each other, wherein the first cutout portion 311, the second cutout portion 321, the third cutout portion 331, and the fourth cutout portion 341 may communicate with each other.

[0017] In addition, in the electrode grooving device of the present invention, the front surface of one surface of the transfer jig 100 facing the electrode E and the first surface 310 of the pattern jig 300 may have a predetermined radius of curvature.

[0018] In addition, in the electrode grooving device of the present invention, the radius of curvature of the front surface of the transfer jig 100 and the radius of curvature of the first surface 310 of the pattern jig 300 may be equal to each other.

[0019] In addition, in the electrode grooving device of the present invention, the second cutout portion 321 and the third cutout portion 331 of the pattern jig 300 may have flow channels communicating with each other, and each of the flow channels may have the same radius of curvature as the first surface 310.

[0020] In addition, in the electrode grooving device of the present invention, the first suction portion 410 may be provided to face the third cutout portion 331, and the second suction portion 420 may be provided to face the fourth cutout portion 341.

[0021] In addition, in the electrode grooving device of the present invention, the second suction portion 420 may include: a first transfer pipe 421 configured to introduce debris discharged through the fourth cutout portion 341 into the first transfer pipe; and a second transfer pipe 422 connected to the other side of the first transfer pipe 421, the second transfer pipe being bent at a predetermined angle.

[0022] In addition, in the electrode grooving device of the present invention, the first transfer pipe 421 may be formed in a shape having a cross-sectional area that gradually decreases toward the second transfer pipe 422.

[0023] In addition, in the electrode grooving device of the present invention, the first incision part 311 may include: a 1a incision part 311a having a predetermined area, the 1a incision part being configured to allow laser light to pass through it; and a 1b incision part 311b located on one side of the 1a incision part 311a, the 1b incision part having an area larger than that of the 1a incision part 311a, and one side of the first transfer pipe 421 may be located in a space formed by the 1b incision part 311b and the fourth incision part 341.

[0024] In addition, the electrode grooving device of the present invention may further include a scattering prevention unit 500 configured to prevent debris from scattering, and the scattering prevention unit 500 may be located in front of the transfer jig 100.

[0025] In addition, in the electrode grooving device of the present invention, the scattering prevention unit 500 may include: a first prevention member 510 configured to extend from the front surface of the transfer jig 100 at a predetermined angle; a second prevention member 520 extending from one side surface of the first prevention member 510 toward the pattern jig 300; and a third prevention member 530 extending from the one side surface of the first prevention member 510 toward the pattern jig 300, the third prevention member being provided at a predetermined distance from the second prevention member 520.

[0026] In addition, the electrode grooving device of the present invention may further include a guiding unit 600 configured to guide the movement of the electrode E, and one side surface of the guiding unit 600 may be fixed to the one side surface of the first prevention member 510, and the rear surface of the guiding unit may be provided to face the first surface 310 of the pattern jig 300.

[0027] In addition, an electrode grooving method using the electrode grooving device according to the present invention includes: step (S1) of supplying an electrode to the transfer jig and the pattern jig; and step (S2) of emitting laser light through the laser unit to groove a part of the edge of the electrode, and capturing debris generated during the grooving process through the suction unit.

[0028] Advantageous Effects

[0029] As is apparent from the above description, the advantages of the electrode grooving device according to the present invention and the electrode grooving method using the electrode grooving device are that the pattern jig is provided with a flow path extending from the top to the bottom, and the suction unit is located below the pattern jig and on the side surface of the pattern jig to form a double suction structure, so that the debris generated during grooving can be reliably captured and removed.

[0030] In addition, the advantages of the electrode grooving device according to the present invention and the electrode grooving method using the electrode grooving device are that air can be supplied to the flow path formed through the top and bottom of the pattern jig, thereby preventing friction between the electrode and the transfer jig and between the electrode and the pattern jig, and making it easier for the debris to move to the suction device. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a view showing the conventional removal of debris during laser grooving.

[0032] Figure 2 is a conceptual diagram showing the grooving of an electrode using the electrode grooving device according to an embodiment of the present invention.

[0033] Figure 3 is Figure 2 a front view of the electrode grooving device shown in

[0034] Figure 4 is Figure 2 a side view of the electrode grooving device shown in

[0035] Figure 5 is Figure 2 a top view of the electrode grooving device shown in

[0036] Figure 6 is Figure 2 an exploded perspective view of the electrode grooving device shown in

[0037] Figure 7 is a view showing Figure 2 an enlarged perspective view of the state in which the transfer jig and the pattern jig in the electrode grooving device shown in

[0038] Figure 8 is Figure 7 a front view of the jig shown in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] Now, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those of ordinary skill in the art to which the present invention pertains can easily implement the preferred embodiments of the present invention. However, when the detailed description of the working principles of the preferred embodiments of the present invention may obscure the subject matter of the present invention, the detailed description will be omitted.

[0040] In addition, the same reference numerals will be used throughout the drawings to refer to components that perform similar functions or operations. In the case where a component is referred to as being connected to another component throughout the application, not only can one component be directly connected to another component, but also one component can be indirectly connected to another component through other components. In addition, unless otherwise specified, including a predetermined element does not mean excluding other elements, but rather means that these elements can be further included.

[0041] In addition, in the drawings, the forward direction refers to the direction in which the electrode faces the laser unit ( Figure 2 the 8 o'clock direction in Figure 2 ), and the backward direction refers to the direction in which the electrode faces the transfer jig 100 (

[0042] the 2 o'clock direction in

[0043] Figure 2 ). Hereinafter, an electrode grooving device according to the present invention will be described. Figure 2 is a conceptual diagram showing grooving of an electrode using an electrode grooving device according to an embodiment of the present invention. As shown in

[0044]

[0045] , the electrode grooving device according to the present invention is a device for grooving the edge of an electrode E, and includes a transfer jig 100, a laser unit 200, a pattern jig 300, a suction unit 400, a non-flying unit 500, and a guide unit 600.

[0044] Here, the electrode E can be a positive electrode or a negative electrode, and each of the positive electrode and the negative electrode includes a coated portion E1 to which an active material is applied and an uncoated portion E2 to which the active material is not applied. A laser beam is emitted toward the uncoated portion E2 located at the edge of the electrode to form a tab having a predetermined shape. Of course, the waste S, which is the portion cut off to form the tab, must be separated from the electrode E.

[0045] In addition, a negative electrode sheet is manufactured by applying a slurry mixture of a negative electrode active material and a binder to a negative electrode current collector made of copper. As the negative electrode active material, for example, carbon such as non-graphitized carbon or graphitic carbon; metal composite oxides such as LixFe2O3 (0 ≤ x ≤ 1), LixWO2 (0 ≤ x ≤ 1), and SnxMe1-xMe’yOz (Me: Mn, Fe, Pb, Ge; Me’: Al, B, P, Si, elements of Groups 1, 2, and 3 of the periodic table, halogens; 0 ≤ x ≤ 1; 1 ≤ y ≤ 3; 1 ≤ z ≤ 8); lithium metal; lithium alloy; silicon-based alloy; tin-based alloy; metal oxides such as SnO, SnO2, PbO, PbO2, Pb2O3, Pb3O4, Sb2O3, Sb2O4, Sb2O5, GeO, GeO2, Bi2O3, Bi2O4, or Bi2O5; conductive polymers such as polyacetylene; Li-Co-Ni-based materials; or silicon-based materials such as Si, SiO, SiO2, or mixtures thereof can be used. However, the present invention is not limited thereto.

[0046] A positive electrode sheet is manufactured by applying a slurry mixture of a positive electrode active material and a binder to a positive electrode current collector made of aluminum. The positive electrode active material can be composed of, for example: layered compounds such as lithium cobalt oxide (LiCoO2) or lithium nickel oxide (LiNiO2), or compounds substituted with one or more transition metals; lithium manganese oxides represented by the chemical formula Li1+xMn2-xO4 (where x = 0 to 0.33), or lithium manganese oxides such as LiMnO3, LiMn2O3, or LiMnO2; lithium copper oxide (Li2CuO2); vanadium oxides such as LiV3O8, LiV3O4, V2O5, or Cu2V2O7; lithium nickel oxides at the Ni site represented by the chemical formula LiNi1-xMxO2 (where M = Co, Mn, Al, Cu, Fe, Mg, B, or Ga, x = 0.01 to 0.3); lithium manganese composite oxides represented by the chemical formula LiMn2-xMxO2 (where M = Co, Ni, Fe, Cr, Zn, or Ta, x = 0.01 to 0.1) or the chemical formula Li2Mn3MO8 (where M is Fe, Co, Ni, Cu, or Zn); LiMn2O4 in which part of the Li in the chemical formula is replaced by alkaline earth metal ions; disulfide compounds; or Fe2(MoO4)3. However, the present invention is not limited thereto.

[0047] Figure 3 is Figure 2 a front view of the electrode grooving device shown in Figure 4 is Figure 2 a side view of the electrode grooving device shown in Figure 5 is Figure 2 a top view of the electrode grooving device shown in

[0048] In addition, Figure 6 is Figure 2 an exploded perspective view of the electrode grooving device shown in Figure 7 is Figure 2 an enlarged perspective view showing the state in which the transfer fixture and the pattern fixture in the electrode grooving device shown in Figure 8 is Figure 7 a front view of the fixture shown in

[0049] Referring to Figures 2 to 8 , first, the transfer fixture 100 can be configured to correspond to one surface of the electrode E to be grooved so as to support the electrode E. In other words, the transfer fixture 100 supports the electrode E, and specifically supports the electrode E such that a part of the electrode E (for example, the uncoated part E2 of the electrode E) can be continuously grooved.

[0050] In addition, the transfer fixture 100 can be configured such that the front surface 110 facing one surface of the electrode E has a predetermined radius of curvature. In this case, the front surface 110 of the transfer fixture 100 can be set to reduce the friction with one surface of the electrode E and to have an appropriate curvature in consideration of the moving direction of the electrode E in the wound state and the moving direction of the electrode E in the grooving state.

[0051] The laser unit 200 can be configured to emit laser light toward the electrode E to groove a predetermined area of the electrode E supported on the transfer fixture 100.

[0052] Here, as described above, the predetermined area of the electrode E can be the uncoated part E2 of the electrode E.

[0053] In addition, the laser unit 200 can be disposed at a position opposite to the transfer fixture 100 so as to emit laser light toward the electrode E.

[0054] The wavelength of the laser light emitted by the laser unit 200 can be a wavelength in the ultraviolet region, a wavelength in the green region, or a wavelength in the infrared region. As an example, the wavelength of the laser can be a wavelength in the range of 1000 μm to 1100 μm in the infrared region; however, the present invention is not limited thereto, as long as the laser is emitted to the uncoated part E2 of the electrode E to form the electrode tab 121. A laser unit well-known to those skilled in the art can be used as the laser unit 200, and thus a more detailed description thereof will be omitted.

[0055] Next, the pattern jig 300 will be described. The pattern jig 300 can be disposed on one side of the transfer jig 100 to support one edge of the electrode E. The pattern jig 300 can include a first surface 310, a second surface 320, a third surface 330, a fourth surface 340, and a fifth surface 350. For example, the pattern jig 300 can be disposed on one side of the transfer jig 100 in a state where the other side of the pattern jig 300 opposite to the side surface 120 of the transfer jig 100 is open.

[0056] The first surface 310 of the pattern jig 300 can be the front surface of the surfaces of the pattern jig 300 that faces one surface of the electrode E. For example, the first surface 310 can be disposed at a position extending from the front surface 110 of the transfer jig 100 to one side. In addition, the first surface 310 of the pattern jig 300 can be configured to have a predetermined radius of curvature, for example, the same radius of curvature as the front surface 110 of the transfer jig 100.

[0057] The first surface 310 can face the electrode E and can have a first cut portion 311 formed in a predetermined shape. The laser emitted by the laser unit 200 passes through the first cut portion 311.

[0058] Specifically, the first cut portion 311 can include a 1a cut portion 311a and a 1b cut portion 311b. The 1a cut portion 311a can have a predetermined area and can be configured to allow the laser to pass through it. The 1b cut portion 311b can be located on one side of the 1a cut portion 311a and can be formed to have an area larger than that of the 1a cut portion 311a.

[0059] The 1a cut portion 311a can be a pattern hole formed in the electrode tab forming portion of the uncoated portion E2 so that the laser unit 200 can emit laser along the 1a cut portion 311a for grooving to cut a part of the uncoated portion E2.

[0060] The 1b cut portion 311b can be formed as an opening into which a part of the first suction portion 410 of the suction unit 400 is inserted, which will be described in detail below.

[0061] The second surface 320 can be a surface located on one edge of the first surface 310, and the third surface 330 can be a surface located on the other edge of the first surface 310.

[0062] Referring to Figure 7 , one edge of the first surface 310 can be at the 12 o'clock direction, and the other edge of the first surface 310 can be at the 6 o'clock direction. That is to say, the second surface 320 can be the upper surface of the pattern jig 300, and the third surface 330 can be the lower surface of the pattern jig 300.

[0063] In addition, a second cut portion 321 having a predetermined shape may be formed in the second surface 320, and a third cut portion 331 having a predetermined shape may be formed in the third surface 330. The second cut portion 321 and the third cut portion 331 may be configured to have a flow channel communicating with each other.

[0064] The flow channels formed in the second cut portion 321 and the third cut portion 331 may be configured to have the same radius of curvature as the first surface 310. That is, the radius of curvature of the front surface of the transfer jig 100, the radius of curvature of the first surface 310 of the pattern jig 300, and the radius of curvature of each of the flow channels formed in the second cut portion 321 and the third cut portion 331 may all be set to the same radius of curvature.

[0065] The fourth surface 340 may be a surface connecting the edges of the first surface 310, the second surface 320, and the third surface 330 to each other. In other words, the fourth surface 340 may be a side surface formed on one side (at the 4 o'clock direction in Figure 7 ).

[0066] In addition, a fourth cut portion 341 having a predetermined shape may be formed in the fourth surface 340, where the fourth cut portion 341 may be connected to the 1b cut portion 311b to form a cut shape. In addition, the first cut portion 311, the second cut portion 321, the third cut portion 331, and the fourth cut portion 341 may communicate with each other.

[0067] The fifth surface 350 may be a surface connecting the edges of the second surface 320, the third surface 330, and the fourth surface 340 to each other, that is, a rear surface provided at the rear of the pattern jig 300 (at the 2 o'clock direction in Figure 7 ).

[0068] Next, the suction unit 400 includes a first suction portion 410 and a second suction portion 420, and is configured to capture debris generated during the slitting process using a laser. In other words, the suction unit 400 may be configured to capture debris generated when the laser unit 200 emits a laser to the uncoated portion E2 of the electrode E for slitting to form an electrode tab.

[0069] The first suction portion 410 may be provided to face the lower surface of the pattern jig 300, and more specifically, to face the third cut portion 331. For example, although not shown in the figure, the first suction portion 410 may be connected to a container (not shown) configured to collect the captured debris, and may be connected to a known suction device (not shown) such as a vacuum pump to ensure that the inside of the pattern jig 300 is under negative pressure.

[0070] In addition, the opening formed at one end of the first suction part 410 may be formed to have an area larger than the area of the third cut portion 331, so as to capture all the debris discharged through the third cut portion 331.

[0071] The second suction part 420 may be arranged to face the side surface of the pattern jig 300, and more specifically, to face the fourth cut portion 341. That is, the second suction part 420 may be located on one side of the pattern jig 300.

[0072] The second suction part 420 may include a first transfer pipe 421 and a second transfer pipe 422. One side of the first transfer pipe 421 may be located in the space formed by the 1b cut portion 311b and the fourth cut portion 341, so that the debris discharged through the fourth cut portion 341 can be introduced into the first transfer pipe 421.

[0073] For example, the first transfer pipe 421 may be configured such that a part of one side of the first transfer pipe 421 is inserted into the fourth cut portion 341 and the 1b cut portion 311b, and the remaining part of the first transfer pipe protrudes partially forward of the pattern jig 300 to capture some debris generated during the laser cutting process.

[0074] Here, the first transfer pipe 421 may be arranged to have a shape with a cross-sectional area gradually decreasing toward the second transfer pipe 422, that is, a conical shape with an inner diameter or cross-sectional area gradually decreasing from one side to the other side, so as to facilitate the transfer of the captured debris.

[0075] The second transfer pipe 422 may be connected to the other side of the first transfer pipe 421, and the second transfer pipe 422 may be bent at a predetermined angle. For example, although not shown in the figure, the second transfer pipe 422 may be connected to a container (not shown) configured to collect the debris captured from the first transfer pipe 421, and may be connected to a known suction device (not shown) such as a vacuum pump to ensure that the inside of the pattern jig 300 is under negative pressure.

[0076] As described above, in the electrode grooving device according to the present invention, the first suction part 410 is provided at the third cut portion 331 and the second suction part 420 is provided at the fourth cut portion 341, thereby improving the debris capture efficiency through a double suction structure. Therefore, the cleaning cycle of the pattern jig can be extended, which can reduce the equipment downtime and improve the productivity.

[0077] In addition, in the electrode grooving device according to the present invention, air is introduced through the flow channels formed in the second cut portion 321 and the third cut portion 331, which can help improve the debris capture efficiency of the first suction part 410 and / or the second suction part 420.

[0078] Next, the anti-scattering unit 500 can be configured to prevent debris from scattering and can be located in front of the transfer jig 100. The anti-scattering unit 500 can include a first prevention member 510, a second prevention member 520, and a third prevention member 530.

[0079] The first prevention member 510 can be configured to extend from the front surface of the transfer jig 100 at a predetermined angle. The first prevention member 510 can be disposed on the other side of the first cutout portion 311 (in the Figure 3 9 o'clock direction) so as to face the second suction portion 420. That is, the first prevention member 510 can be configured to prevent some debris that is not sucked into the second suction portion 420 from scattering and can cause it to adhere to one surface of the first prevention member 510.

[0080] The second prevention member 520 can extend from one side surface of the first prevention member 510 toward the pattern jig 300. In addition, the third prevention member 530 can extend from one side surface of the first prevention member 510 toward the pattern jig 300 so as to be spaced apart from the second prevention member 520 by a predetermined distance.

[0081] In other words, the second prevention member 520 can be disposed above the first cutout portion 311 (in the Figure 3 12 o'clock direction), and the third prevention member 530 can be disposed below the first cutout portion 311 (in the Figure 3 6 o'clock direction).

[0082] Therefore, the anti-scattering unit 500 can be disposed on the other side, upper side, and lower side of the first cutout portion 311 except for the side of the first cutout portion where the second suction portion 420 is located, so as to prevent some debris that is not sucked by the second suction portion 420 from scattering.

[0083] The guiding unit 600 can be configured to guide the movement of the electrode E. For example, the guiding unit 600 can guide the movement of the electrode E so that the waste S generated by grooving is separated from the electrode E on which the electrode tab is formed.

[0084] Specifically, the guiding unit 600 can be disposed such that its side surface (in the Figure 2 11 o'clock direction) is fixed to one side surface of the first prevention member 510, and its rear surface (in the Figure 2 2 o'clock direction) faces the first surface 310 of the pattern jig 300.

[0085] Here, the rear surface of the guiding unit 600 being opposite to the first surface 310 of the pattern jig 300 may mean that the rear surface of the guiding unit 600 is arranged to face the first surface 310 of the pattern jig 300.

[0086] In addition, the rear surface of the guiding unit 600 may be configured to correspond to the radius of curvature of the first surface 310 of the pattern jig 300. For example, the first surface 310 of the pattern jig 300 may be formed to have a curvature protruding in the forward direction ( Figure 4 in the 9 o'clock direction in [[]]), and the rear surface of the guiding unit 600 may be formed to have a curvature recessed in the backward direction ( Figure 4 in the 9 o'clock direction in [[]]) so as to correspond to the pattern jig 300. In addition, the rear surface of the guiding unit 600 may be configured to have a circular shape to prevent damage to the electrode E.

[0087] Therefore, the rear surface of the guiding unit 600 may guide the movement of the electrode E having electrode tabs formed by slitting, and the front surface of the guiding unit may guide the movement of the waste S generated by slitting.

[0088] Therefore, the waste S generated by slitting moves downward along the front surface of the guiding unit 600, which facilitates the collection of the waste S, enables the winding of the electrode E formed with electrode tabs to be easily achieved, and can fundamentally prevent problems in the slitting process caused by the waste S.

[0089] Next, a method of slitting an electrode using an electrode slitting device will be described.

[0090] The electrode slitting method according to the present invention may include: step (S1) of supplying the electrode E to the transfer jig 100 and the pattern jig 300; and step (S2) of emitting a laser through the laser unit 200 to slit a part of the edge of the electrode E and capturing debris generated during the slitting process by the suction unit 400.

[0091] Step (S2) may further include the step of introducing air via the flow channels in the second cut portion 321 and the third cut portion 331 by suction of the suction unit 400.

[0092] Here, a predetermined level of negative pressure may be formed in the suction unit 400 by a suction device (not shown).

[0093] Although the specific details of the present invention have been described in detail, those skilled in the art will understand that the detailed description only discloses the preferred embodiments of the present invention, and thus does not limit the scope of the present invention. Therefore, those skilled in the art will understand that various changes and modifications can be made without departing from the scope and technical concept of the present invention, and it will be apparent that such changes and modifications fall within the scope of the appended claims.

[0094] (Explanation of reference numerals)

[0095] 100: Transfer jig

[0096] 110: Front surface 120: Side surface

[0097] 200: Laser unit

[0098] 300: Pattern jig

[0099] 310: First surface 311: First cut portion

[0100] 311a: First a cut portion 311b: First b cut portion

[0101] 320: Second surface 321: Second cut portion

[0102] 330: Third surface 331: Third cut portion

[0103] 340: Fourth surface 341: Fourth cut portion

[0104] 350: Fifth surface

[0105] 400: Suction unit

[0106] 410: First suction portion

[0107] 420: Second suction portion

[0108] 421: First transfer pipe 422: Second transfer pipe

[0109] 500: Anti-scattering unit

[0110] 510: First prevention member 520: Second prevention member

[0111] 530: Third prevention member

[0112] 600: Guide unit

[0113] E: Electrode

[0114] E1: Coated portion E2: Uncoated portion

[0115] S: Scrap.

Claims

1. An electrode grooving device, comprising: A transfer fixture configured to face a surface of the electrode to be grooved to support the electrode; A laser unit configured to emit laser light towards the electrode to cut a predetermined area of the electrode; A pattern fixture provided on one side of the transfer fixture, the pattern fixture configured to support an edge of the electrode, the pattern fixture including a first surface formed with a first cut portion, the first cut portion configured to allow the laser light emitted by the laser unit to pass through it; And A suction unit configured to capture debris generated during the cutting by the laser, wherein The suction unit includes a first suction portion located below the pattern fixture and a second suction portion located at a side surface of the pattern fixture.

2. The electrode grooving device according to claim 1, wherein The pattern fixture includes: A first surface configured to face the electrode, the first surface having a first cut portion formed in a predetermined shape; A second surface located at an edge of the first surface, the second surface having a second cut portion formed in a predetermined shape; A third surface located at another edge of the first surface, the third surface having a third cut portion formed in a predetermined shape; A fourth surface configured to connect the edges of the first surface, the second surface, and the third surface to each other, the fourth surface having a fourth cut portion formed in a predetermined shape; And A fifth surface configured to connect the edges of the second surface, the third surface, and the fourth surface to each other, and The first cut portion, the second cut portion, the third cut portion, and the fourth cut portion communicate with each other.

3. The electrode grooving device according to claim 2, wherein a front surface of a surface of the transfer fixture facing the electrode and the first surface of the pattern fixture have a predetermined radius of curvature.

4. The electrode grooving device according to claim 3, wherein the radius of curvature of the front surface of the transfer fixture and the radius of curvature of the first surface of the pattern fixture are equal to each other.

5. The electrode grooving device according to claim 3, wherein The second cut portion and the third cut portion of the pattern fixture have a flow channel communicating with each other, and Each of the flow channels has the same radius of curvature as the first surface.

6. The electrode grooving device according to claim 2, wherein The first suction portion is arranged to face the third cut portion, and The second suction portion is arranged to face the fourth cut portion.

7. The electrode grooving device according to claim 6, wherein the second suction portion includes: A first transfer pipe configured to introduce debris discharged through the fourth cut portion into the first transfer pipe; And A second transfer pipe, the second transfer pipe being connected to the other side of the first transfer pipe, and the second transfer pipe being bent at a predetermined angle.

8. The electrode grooving device according to claim 7, wherein the first transfer pipe is formed in a shape having a cross-sectional area that gradually decreases toward the second transfer pipe.

9. The electrode grooving device according to claim 7, wherein The first cut portion includes: A first a cut portion having a predetermined area and configured to allow laser light to pass therethrough; And A first b cut portion located on one side of the first a cut portion, the first b cut portion having an area larger than that of the first a cut portion, and One side of the first transfer pipe is located in a space formed by the first b cut portion and the fourth cut portion.

10. The electrode grooving device according to claim 3, further comprising: A non-scattering unit configured to prevent debris from scattering, wherein The non-scattering unit is located in front of the transfer jig.

11. The electrode grooving device according to claim 10, wherein the non-scattering unit includes: A first prevention member configured to extend from the front surface of the transfer jig at a predetermined angle; A second prevention member extending from one side surface of the first prevention member toward the pattern jig; And A third prevention member extending from the one side surface of the first prevention member toward the pattern jig, the third prevention member being provided at a predetermined distance from the second prevention member.

12. The electrode grooving device according to claim 11, further comprising: A guiding unit configured to guide the movement of the electrode, wherein One side surface of the guiding unit is fixed to the one side surface of the first prevention member, and The rear surface of the guiding unit is provided to face the first surface of the pattern jig.

13. An electrode grooving method using the electrode grooving device according to any one of claims 1 to 12, the electrode grooving method comprising: Step (S1) of supplying an electrode to the transfer jig and the pattern jig; And Step (S2) of emitting laser light through the laser unit to groove a part of the edge of the electrode and capturing debris generated during the grooving process through the suction unit.

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