Electrode notching device and electrode notching method using the same

Abstract

The present invention relates to an electrode notching device and an electrode notching method using the same, comprising: a transfer jig facing one side of an electrode to support the electrode to be notched; a laser unit that irradiates a laser toward the electrode to cut a certain region of the electrode; a pattern jig that is provided on one side of the transfer jig to support one side edge of the electrode and includes a first surface having a first incision formed thereon through which the laser irradiated from the laser unit passes; and a suction unit that collects foreign matter generated during the cutting process using the laser, the suction unit including a first suction unit located below the pattern jig and a second suction unit located on a side of the pattern jig.

Description

[Technical Field]

[0001] This application claims the benefit of priority based on Korean Patent Application No. 10-2023-0152101, filed November 6, 2023, the entire contents of which are incorporated herein by reference.

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

[0003] Recently, due to air pollution and energy depletion caused by the use of fossil fuels, there has been an increasing demand for secondary batteries that can store electrical energy produced by the development of alternative energy sources. Rechargeable secondary batteries are widely used in daily life, such as in mobile devices, electric vehicles, and hybrid electric vehicles.

[0004] In order to meet user demands, such secondary batteries are arranged in a number of battery cells in small devices, while in automobiles and the like, a battery module in which a number of battery cells are electrically connected or a battery pack equipped with a number of such battery modules is used.

[0005] Meanwhile, lithium secondary batteries are classified according to the shape of the battery case into cylindrical secondary batteries or prismatic secondary batteries in which an electrode assembly is housed in a cylindrical or prismatic metal can, and pouch-type secondary batteries in which an electrode assembly is housed in a pouch-shaped case made of an aluminum laminate sheet.

[0006] The electrode assembly is formed by stacking positive and negative electrodes with a separator interposed therebetween, and the positive and negative electrodes are manufactured by forming electrode tabs on the positive and negative electrode sheets, respectively, and cutting the sheets into unit electrodes.

[0007] In particular, in the process of forming the electrode tabs, a laser is irradiated to remove the remaining portions of the electrode sheet except for the electrode tabs. If any foreign particles fly off during this process and attach to the electrodes, it can lead to defects, so all the foreign particles must be reliably collected and removed.

[0008] Fig. 1 is a diagram showing the removal of foreign matter during laser notching according to the prior art. As shown in Fig. 1, a suction unit 30 is connected to the inside of a main body 10, and a blower 40 consisting of a plurality of air knives 41 is provided. When the blower 40 blows air and foreign matter in a direction parallel to the width direction of the electrode sheet 1 being transported, the blown air and foreign matter are sucked into the suction unit 30, which is configured to be connected to a position facing the blower 40, and are removed.

[0009] However, since the foreign matter flowing into the suction part 30 depends on the airflow of the blower 40 located opposite, it is highly likely that some or a large amount of the foreign matter will not be able to flow into the suction part 30 . [Prior art documents] [Patent documents]

[0010] [Patent Document 1] Korean Patent Publication No. 10-2015-0062847 Summary of the Invention [Problem to be solved by the invention]

[0011] In order to solve the above problems, it is an object of the present invention to provide an electrode notching device and an electrode notching method using the same that can reliably collect and remove foreign particles generated during the electrode notching process using a laser. [Means for solving the problem]

[0012] As a technical means for achieving the above object, the electrode notching device according to the present invention includes a transfer jig (100) that faces one side of the electrode (E) to support the electrode (E) to be notched, a laser unit (200) that irradiates a laser toward the electrode (E) to cut a certain area of ​​the electrode (E), a pattern jig (300) that is provided on one side of the transfer jig (100) to support one side edge of the electrode (E) and includes a first surface (310) formed with a first incision portion (311) through which the laser irradiated from the laser unit (200) passes, and a suction unit (400) that collects foreign matter generated during the cutting process using the laser, and the suction unit (400) includes a first suction unit (410) located below the pattern jig (300) and a second suction unit (420) located on a side of the pattern jig (300).

[0013] In addition, in the electrode notching device according to the present invention, the pattern jig (300) has the first surface (310) facing the electrode (E) and having the first cutout (311) of a predetermined shape formed thereon, a second surface (320) located at one side edge of the first surface (310) and having the second cutout (321) of a predetermined shape formed thereon, a third surface (330) located at the other side edge of the first surface (310) and having the third cutout (331) of a predetermined shape formed thereon, and (310), a fourth surface (340) that connects the edges of the second surface (320) and the third surface (330) and has a fourth cutout portion 341 of a certain shape formed thereon, and a fifth surface (350) that connects the edges of the second surface (320), the third surface (330) and the fourth surface (340), and the first cutout portion (311), the second cutout portion (321), the third cutout portion (331) and the fourth cutout portion (341) are characterized by having a structure in which they are connected to each other.

[0014] In addition, in the electrode notching device according to the present invention, the front surface of the transfer jig (100) facing one side of the electrode (E) and the first surface (310) of the pattern jig (300) have a constant radius of curvature.

[0015] In addition, in the electrode notching device according to the present invention, the front surface of the transfer jig (100) and the first surface (310) of the pattern jig (300) have the same radius of curvature.

[0016] In addition, in the electrode notching device according to the present invention, the second cutout portion (321) and the third cutout portion (331) of the pattern jig (300) form a flow path that communicates with each other, and the flow path has the same radius of curvature as the first surface (310).

[0017] In addition, in the electrode notching device according to the present invention, the first suction portion (410) is positioned toward the third cutout portion (331), and the second suction portion (420) is positioned toward the fourth cutout portion (341).

[0018] In addition, in the electrode notching device according to the present invention, the second suction part (420) is characterized by including a first transfer pipe (421) into which foreign matter discharged through the fourth cutout part (341) flows, and a second transfer pipe (422) connected to the other side of the first transfer pipe (421) and bent at a certain angle.

[0019] In the electrode notching device according to the present invention, the first transfer pipe (421) has a shape in which the cross-sectional area decreases toward the second transfer pipe (422).

[0020] In addition, in the electrode notching device according to the present invention, the first cutout portion (311) includes a 1a cutout portion (311a) having a certain area through which a laser passes, and a 1b cutout portion (311b) located on one side of the 1a cutout portion (311a) and having a larger area than the 1a cutout portion (311a), and one side of the first transfer pipe (421) is located in the space formed by the 1b cutout portion (311b) and the fourth cutout portion (341).

[0021] In addition, the electrode notching device according to the present invention further includes a scattering prevention unit (500) for preventing foreign matter from scattering, and the scattering prevention unit (500) is located in front of the transfer jig (100).

[0022] In addition, in the electrode notching device according to the present invention, the anti-scattering unit (500) includes a first prevention member (510) extending at a certain angle from the front surface of the transfer jig (100), a second prevention member (520) extending from one side of the first prevention member (510) toward the pattern jig (300), and a third prevention member (530) extending from one side of the first prevention member (510) toward the pattern jig (300) and positioned at a certain distance from the second prevention member (520).

[0023] In addition, the electrode notching device according to the present invention further includes a guide part (600) for guiding the movement of the electrode (E), one side of the guide part (600) is fixed to one side of the first prevention member (510), and the rear side is positioned to face the first surface (310) of the pattern jig (300).

[0024] In addition, the electrode notching method using the electrode notching device according to the present invention is characterized by comprising the steps of: (S1) supplying the electrode (E) to the transfer jig (100) and the pattern jig (300); and (S2) notching a portion of the edge of the electrode (E) by irradiating a laser through the laser unit (200), and collecting foreign matter generated during the notching process with the suction unit (400). [Effects of the Invention]

[0025] As described above, in the electrode notching apparatus and electrode notching method using the same according to the present invention, the pattern jig is provided with a flow path penetrating from top to bottom, and is configured with a dual suction structure in which suction parts are located below and on the sides of the pattern jig, thereby providing the advantage of being able to reliably collect and remove foreign matter generated during notching.

[0026] Furthermore, according to the electrode notching device and electrode notching method using the same of the present invention, air can be supplied to the flow passage formed through the top and bottom of the pattern jig, which not only prevents friction between the electrode and the fixing jig and between the electrode and the pattern jig, but also has the advantage of allowing foreign matter to move more easily to the suction section. [Brief explanation of the drawings]

[0027] [Figure 1] FIG. 1 is a diagram showing the removal of foreign matter during laser notching according to the prior art.

[0028] [Figure 2] 1 is a conceptual diagram illustrating a state in which an electrode is notched using an electrode notching device according to an embodiment of the present invention;

[0029] [Figure 3] FIG. 3 is a front view of the electrode notching device shown in FIG. 2.

[0030] [Figure 4] FIG. 3 is a view of the electrode notching device shown in FIG. 2 as seen from one side.

[0031] [Figure 5] FIG. 3 is a top view of the electrode notching device shown in FIG. 2.

[0032] [Figure 6] FIG. 3 is an exploded perspective view of the electrode notching device shown in FIG. 2.

[0033] [Figure 7] 3 is an enlarged perspective view of the electrode notching device shown in FIG. 2 in a state where a transfer jig and a pattern jig are coupled together. FIG.

[0034] [Figure 8] FIG. 8 is a front view of the view shown in FIG. 7. DETAILED DESCRIPTION OF THE INVENTION

[0035] Hereinafter, with reference to the accompanying drawings, a detailed description will be given of an embodiment of the present invention that will enable a person skilled in the art to easily carry out the present invention. However, in describing the operation principle of the preferred embodiment of the present invention in detail, detailed description of related well-known functions or configurations will be omitted if it is determined that such detailed description may unnecessarily obscure the gist of the present invention.

[0036] Furthermore, the same reference numerals are used throughout the drawings for parts having similar functions and actions. Throughout the specification, when a part is said to be connected to another part, this includes not only a direct connection but also an indirect connection via another element therebetween. Furthermore, unless otherwise specified, "including a certain element" does not mean that other elements are excluded, but that other elements may also be included.

[0037] In addition, in the drawings, the front means the direction in which the electrode faces the laser unit (8 o'clock direction in FIG. 2), and the rear means the direction in which the electrode faces the transfer jig 100 (2 o'clock direction in FIG. 2).

[0038] In the following, an electrode notching device according to the present invention will be described.

[0039] Figure 2 is a conceptual diagram for explaining the state of notching an electrode using an electrode notching device according to an embodiment of the present invention. As shown in Figure 2, the electrode notching device of the present invention is a device for notching 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 scattering prevention unit 500, and a guide unit 600.

[0040] Here, the electrode E can be a positive electrode or a negative electrode. Each of the positive electrode or the negative electrode is provided with a substrate portion E1 coated with an active material and a non-coated portion E2 not coated with an active material, and a laser beam is irradiated toward the non-coated portion E2 located at the edge to form a tab having a certain shape. Of course, the scrap S, which is the portion cut for tab formation, must be separated from the electrode E.

[0041] On the other hand, the negative electrode sheet is manufactured by applying a slurry in which a negative electrode active material and a binder are mixed to a negative electrode current collector such as a copper material. As the negative electrode active material, for example, carbon such as graphitized carbon and graphite-based carbon; Li x Fe₂O₃(0≦x≦1), Li x WO₂(0≦x≦y≦1), Sn x Me 1-x Me' y O z (Me: Mn, Fe, Pb, Ge; Me': Al, B, P, Si, Group 1, Group 2, Group 3 elements of the periodic table, halogen; 0 < x ≦ 1; 1 ≦ y ≦ 3; 1 ≦ z ≦ 8) and other metal composite oxides; 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, Bi₂O₅; conductive polymers such as polyacetylene; Li-Co-Ni-based materials; Si-based materials such as Si, SiO, SiO₂ alone or mixtures thereof can be used, but are not limited thereto.

[0042] The positive electrode sheet is manufactured by applying a slurry of a positive electrode active material and a binder to a positive electrode current collector such as aluminum material. The positive electrode active material is a layered compound such as lithium cobalt oxide (LiCoO2), lithium nickel oxide (LiNiO2), or a compound substituted with one or more transition metals; the chemical formula is Li 1+x Mn 2-x Lithium manganese oxides such as LiMnO4 (where x is 0 to 0.33), LiMnO3, LiMn2O3, and LiMnO2; lithium copper oxide (Li2CuO2); vanadium oxides such as LiV3O8, V2O5, and Cu2V2O7; and the chemical formula LiNi 1-x Ni-site type lithium nickel oxide represented by MxO2 (where M=Co, Mn, Al, Cu, Fe, Mg, B, or Ga, and x=0.01 to 0.3); chemical formula LiMn 2-x M x Examples of the lithium manganese composite oxides include, but are not limited to, lithium manganese composite oxides expressed as LiMnO2 (where M is Co, Ni, Fe, Cr, Zn, or Ta, and x is 0.01 to 0.1) or Li2Mn3MO8 (where M is Fe, Co, Ni, Cu, or Zn); LiMn2O4 in which part of the Li in the chemical formula is substituted with an alkaline earth metal ion; disulfide compounds; and Fe2(MoO4)3.

[0043] 3 is a front view of the electrode notching device shown in FIG. 2, FIG. 4 is a side view of the electrode notching device shown in FIG. 2, and FIG. 5 is a top view of the electrode notching device shown in FIG. 2.

[0044] 6 is an exploded perspective view of the electrode notching device shown in FIG. 2, FIG. 7 is an enlarged perspective view of the electrode notching device shown in FIG. 2 in which the transfer jig and pattern jig are coupled, and FIG. 8 is a front view of the view shown in FIG. 7.

[0045] 2 to 8, first, the transfer jig 100 may be provided to correspond to one side of the electrode E so as to support the electrode E to be notched. In other words, the transfer jig 100 supports the electrode E so that a portion of the electrode E (e.g., the uncoated portion E2) is notched continuously.

[0046] In addition, the transfer jig 100 may be configured so that a front surface 110 facing one surface of the electrode E has a certain radius of curvature. Here, the front surface 110 of the transfer jig 100 may be set to an appropriate curvature that reduces friction with one surface of the electrode E and takes into consideration the movement direction of the electrode E in a wound state and the movement direction of the electrode E in a notched state.

[0047] The laser unit 200 can be configured to irradiate a laser toward the electrode E supported by the transfer jig 100 in order to notch a certain region of the electrode E.

[0048] Here, a certain region of the electrode E may be the uncoated portion E2 of the electrode E as described above.

[0049] In addition, the laser unit 200 can be disposed at a position facing the transfer jig 100 so as to irradiate the electrode E with a laser.

[0050] The wavelength of the laser irradiated from the laser unit 200 may be in the ultraviolet region, green region, or infrared region, for example, a wavelength of 1000 nm to 1100 nm in the infrared region, but is not limited thereto as long as it can irradiate the uncoated portion E2 of the electrode E to form the electrode tab 121. The laser unit 200 may be configured with a laser unit that is obvious to a person skilled in the art, and therefore further detailed description thereof will be omitted.

[0051] Next, the pattern jig 300 will be described. The pattern jig 300 may be provided on one side of the transfer jig 100 to support one side edge of the electrode E. The pattern jig 300 may include a first side 310, a second side 320, a third side 330, a fourth side 340, and a fifth side 350. For example, the pattern jig 300 may be provided on one side of the transfer jig 100, and the other side of the pattern jig 300 opposite the side surface 120 of the transfer jig 100 may be configured to be open.

[0052] The first surface 310 of the pattern jig 300 may be a front surface that faces one surface of the electrode E among the surfaces forming the pattern jig 300. For example, the first surface 310 may be disposed at a position extending to one side from the front surface 110 of the transfer jig 100. Furthermore, the first surface 310 of the pattern jig 300 may have a constant radius of curvature, and may be configured to have the same radius of curvature as the front surface of the transfer jig 100.

[0053] The first surface 310 may have a first cutout 311 formed in a predetermined shape facing the electrode E, and the laser irradiated from the laser unit 200 passes through the first cutout 311.

[0054] In detail, the first incision portion 311 may include an incision portion 1a 311a and an incision portion 1b 311b. The incision portion 1a 311a has a fixed area and is configured to allow a laser to pass through, and the incision portion 1b 311b is located on one side of the incision portion 1a 311a and may be formed to have a larger area than the incision portion 1a 311a.

[0055] The 1a cutout portion 311a is formed in the area where the electrode tab is to be formed in the non-coating portion E2, and may be a pattern hole that allows the laser unit 200 to cut a portion of the non-coating portion E2 by irradiating a laser along the 1a cutout portion 311a to notch it.

[0056] The first cutout 311b may have an opening shape so that a part of the first suction part 410 of the suction part 400 can be inserted therein, which will be described in detail later.

[0057] The second surface 320 may be a surface located on one side edge of the first surface 310, and the third surface 330 may be a surface located on the other side edge of the first surface 310.

[0058] 7, one side edge of the first surface 310 may be in the 12 o'clock direction, and the other side edge of the first surface 310 may be in the 6 o'clock direction. That is, the second surface 320 may be the upper surface of the pattern jig 300, and the third surface 330 may be the lower surface of the pattern jig 300.

[0059] In addition, a second cutout 321 having a specific shape may be formed on the second surface 320, and a third cutout 331 having a specific shape may be formed on the third surface 330. The second cutout 321 and the third cutout 331 may be configured to form a flow path that communicates with each other.

[0060] The flow paths formed by the second cutout portion 321 and the third cutout 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 the flow paths formed by the second cutout portion 321 and the third cutout portion 331 may all be set to have the same radius of curvature.

[0061] The fourth surface 340 may be a surface connecting edges of the first surface 310, the second surface 320, and the third surface 330. In other words, the fourth surface 340 may be a side surface formed on one side of the pattern jig 300 (the 4 o'clock direction in FIG. 7).

[0062] Meanwhile, a fourth cutout 341 having a predetermined shape is formed on the fourth surface 340, and the fourth cutout 341 may be formed in a cutout shape connected to the first cutout 311b. Also, the first cutout 311, the second cutout 321, the third cutout 331, and the fourth cutout 341 may be structured to be connected to one another.

[0063] 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, in other words, a rear surface provided at the rear of the pattern jig 300 (2 o'clock direction in FIG. 7).

[0064] Next, the suction unit 400 includes a first suction unit 410 and a second suction unit 420, and is configured to collect foreign matter generated during the laser notching process. In other words, the suction unit 400 may be configured to collect foreign matter generated when the laser irradiated from the laser unit 200 irradiates and notches the uncoated portion E2 of the electrode E to form an electrode tab.

[0065] The first suction unit 410 may be positioned below the pattern jig 300, more specifically, facing the third incision 331. For example, the first suction unit 410 may be connected to a container (not shown) that collects the trapped foreign matter, and although not shown in the drawings, a known suction means (not shown) such as a vacuum pump may be connected to the first suction unit 410 so that the inside of the pattern jig 300 is in a negative pressure state.

[0066] In addition, the opening at one end of the first suction part 410 is formed to be larger than the area of ​​the third cutout part 331 so that all foreign matter discharged through the third cutout part 331 can be collected.

[0067] The second suction unit 420 may be located on a side of the pattern jig 300, more specifically, the second suction unit 420 may be located facing the fourth incision unit 341. That is, the second suction unit 420 may be located on one side of the pattern jig 300.

[0068] The second suction portion 420 may include a first transfer pipe 421 and a second transfer pipe 422. One side of the first transfer pipe 421 may be positioned in the space formed by the 1b cutout portion 311b and the fourth cutout portion 341 so that foreign matter discharged through the fourth cutout portion 341 flows in.

[0069] For example, the first transfer pipe 421 may be configured such that one side of the first transfer pipe 421 is inserted into the fourth incision 341 and the 1b incision 311b, and the remaining area protrudes partially forward of the pattern jig 300, thereby capturing some of the foreign matter generated during the laser cutting process.

[0070] Here, the first transfer pipe 421 may be formed in a shape in which the cross-sectional area becomes smaller as it approaches the second transfer pipe 422, in other words, in a cone shape in which the inner diameter or cross-sectional area becomes smaller from one side to the other, to facilitate the transfer of collected foreign matter.

[0071] The second transfer pipe 422 may be connected to the other side of the first transfer pipe 421. The second transfer pipe 422 may be bent at a certain angle. For example, the second transfer pipe 422 may be connected to a container (not shown) that collects foreign matter collected from the first transfer pipe 421, and although not shown in the drawings, a known suction means (not shown) such as a vacuum pump may be connected to the second transfer pipe 422 so that the inside of the pattern jig 300 is in a negative pressure state.

[0072] The electrode notching device according to the present invention includes a first suction part 410 disposed in the third cutout part 331 and a second suction part 420 disposed in the fourth cutout part 341, and thus the dual suction structure improves the efficiency of collecting foreign matter and improves the pattern jig cleaning cycle, thereby reducing equipment downtime and improving productivity.

[0073] In addition, the electrode notching device according to the present invention allows air to flow through the flow path formed by the second cutout portion 321 and the third cutout portion 331, which can contribute to improving the foreign matter collection efficiency of the first suction portion 410 and / or the second suction portion 420.

[0074] Next, a scattering prevention unit 500 may be provided to prevent scattering of foreign objects and may be located in front of the transfer jig 100. The scattering prevention unit 500 may include a first prevention member 510, a second prevention member 520, and a third prevention member 530.

[0075] The first prevention member 510 may be configured to extend at a certain angle from the front surface of the transfer jig 100. The first prevention member 510 may be provided on the other side of the first cutout 311 (9 o'clock direction in FIG. 3) and may be provided at a position facing the second suction part 420. That is, the first prevention member 510 may be configured to prevent some of the foreign matter that is not sucked into the second suction part 420 from scattering, and may be configured to attach to one side of the first prevention member 510.

[0076] The second prevention member 520 may extend from one side of the first prevention member 510 toward the pattern jig 300. In addition, the third prevention member 530 may extend from one side of the first prevention member 510 toward the pattern jig 300 and be positioned to be spaced apart from the second prevention member 520 by a certain distance.

[0077] More specifically, the second prevention member 520 may be positioned above the first cutout 311 (12 o'clock direction based on FIG. 3), and the third prevention member 530 may be positioned below the first cutout 311 (6 o'clock direction based on FIG. 3).

[0078] Therefore, the scattering prevention part 500 is provided on the other side, upper side and lower side of the first cutout part 311 except for one side where the second suction part 420 is located, thereby preventing some of the foreign matter that is not sucked in by the second suction part 420 from scattering.

[0079] The guide unit 600 may be configured to guide the movement of the electrode E. For example, the guide unit 600 may guide the scrap S generated by notching and the electrode E on which the electrode tab is formed so that they move in a separated state.

[0080] In detail, the guide part 600 may be positioned so that its side (11 o'clock direction in FIG. 2) is fixed to one side of the first prevention member 510 and its rear side (2 o'clock direction in FIG. 2) faces the first surface 310 of the pattern jig 300.

[0081] Here, the rear surface of the guide part 600 facing the first surface 310 of the pattern jig 300 may mean that the rear surface of the guide part 600 is disposed to face the first surface 310 of the pattern jig 300 .

[0082] In addition, the rear surface of the guide 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 that bulges forward (toward the 9 o'clock direction in FIG. 4), and the rear surface of the guide unit 600 may be formed to have a curvature that correspondingly bulges backward (toward the 9 o'clock direction in FIG. 4). In addition, the rear surface of the guide unit 600 may be configured to have a rounded shape so that the electrode E is not damaged.

[0083] In this manner, the rear surface of the guide part 600 can guide the movement of the electrode E which is notched to form an electrode tab, and the front surface can guide the movement of the scrap S generated by the notching.

[0084] Therefore, the scraps S generated by notching fall down along the front surface of the guide part 600, making it easy to collect the scraps S, facilitating winding of the electrode E on which the electrode tabs are formed, and also fundamentally eliminating problems in the notching process caused by the scraps S.

[0085] Next, a method for notching an electrode using the above-mentioned electrode notching device will be described.

[0086] The electrode notching method according to the present invention may include the steps of (S1) supplying an electrode E to a transfer jig 100 and a pattern jig 300, and (S2) notching a portion of an edge of the electrode E by irradiating a laser through a laser unit 200, and collecting foreign matter generated during the notching process using a suction unit 400.

[0087] The step (S2) may further include a step of introducing air through the flow paths of the second cutout portion 321 and the third cutout portion 331 by the suction of the suction portion 400.

[0088] Here, the suction unit 400 can generate a certain level of negative pressure by means of a suction means (not shown).

[0089] Although specific portions of the contents of the present invention have been described in detail above, it will be apparent to those skilled in the art that such specific techniques are merely preferred embodiments and do not limit the scope of the present invention. It is obvious to those skilled in the art that various changes and modifications are possible within the scope and technical idea of ​​the present invention, and it goes without saying that such changes and modifications also fall within the scope of the accompanying claims. [Explanation of symbols]

[0090] 100 Transfer Jig

[0091] 110 Front 120 Side

[0092] 200 Laser section

[0093] 300 pattern jig

[0094] 310 Page 1 311 1st incision

[0095] 311a 1a incision 311b 1st b incision

[0096] 320 2nd page 321 2nd incision

[0097] 330 Page 3 331 Third incision

[0098] 340 Page 4 341 4th incision

[0099] 350 Page 5

[0100] 400 Suction section

[0101] 410 First Suction Section

[0102] 420 Second Suction Section

[0103] 421 1st transfer pipe 422 2nd transfer pipe

[0104] 500 Shatter prevention part

[0105] 510 First prevention member 520 Second prevention member

[0106] 530 Third prevention member

[0107] 600 Guide part

[0108] E-electrode

[0109] E1 Landed area E2 plain area

[0110] S Scrap

Claims

1. a transfer jig facing one surface of the electrode to be notched so as to support the electrode; a laser unit that irradiates a laser toward the electrode to cut a predetermined region of the electrode; a pattern jig provided on one side of the transfer jig to support one side edge of the electrode, the pattern jig including a first surface having a first cutout formed therein through which the laser irradiated from the laser unit passes; a suction unit that collects foreign matter generated during the laser cutting process, The suction unit includes a first suction unit located below the pattern jig and a second suction unit located on a side of the pattern jig.

2. The pattern jig is the first surface facing the electrode and having the first cutout portion of a certain shape formed thereon; a second surface located at one side edge of the first surface and having a second cutout portion of a predetermined shape; a third surface located at the other side edge of the first surface and having a third cutout portion of a predetermined shape formed thereon; a fourth surface connecting edges of the first surface, the second surface, and the third surface and having a fourth cutout portion of a predetermined shape formed thereon; a fifth surface connecting edges of the second surface, the third surface, and the fourth surface, The electrode notching device according to claim 1 , wherein the first cutout, the second cutout, the third cutout, and the fourth cutout are structured to communicate with each other.

3. 3. The electrode notching apparatus of claim 2, wherein a front surface of the transfer jig and the first surface of the pattern jig facing one surface of the electrode have a constant radius of curvature.

4. 4. The electrode notching apparatus of claim 3, wherein the front surface of the transfer jig and the first surface of the pattern jig have the same radius of curvature.

5. 4. The electrode notching device of claim 3, wherein the second cutout and the third cutout of the pattern jig form a flow path that communicates with each other, and the flow path has the same radius of curvature as the first surface.

6. 3. The electrode notching device of claim 2, wherein the first suction portion is positioned toward the third cutout portion, and the second suction portion is positioned toward the fourth cutout portion.

7. 7. The electrode notching device of claim 6, wherein the second suction portion includes a first transfer tube into which foreign matter discharged through the fourth incision flows, and a second transfer tube connected to the other end of the first transfer tube and bent at a certain angle.

8. The electrode notching device according to claim 7 , wherein the first transfer pipe has a shape in which the cross-sectional area decreases toward the second transfer pipe.

9. the first incision includes a 1a incision having a certain area and through which a laser passes, and a 1b incision located on one side of the 1a incision and having a larger area than the 1a incision, The electrode notching device of claim 7 , wherein one side of the first transfer tube is located in a space formed by the first cutout portion and the fourth cutout portion.

10. Further including a scattering prevention part for preventing scattering of foreign matter, 4. The electrode notching device according to claim 3, wherein the anti-scattering portion is located in front of the transfer jig.

11. 11. The electrode notching apparatus of claim 10, wherein the anti-scattering unit includes: a first anti-scattering member extending at a predetermined angle from the front surface of the transfer jig; a second anti-scattering member extending from one side of the first anti-scattering member toward the pattern jig; and a third anti-scattering member extending from one side of the first anti-scattering member toward the pattern jig and spaced a predetermined distance from the second anti-scattering member.

12. 12. The electrode notching apparatus of claim 11, further comprising a guide portion for guiding movement of the electrode, one side of the guide portion being fixed to one side of the first prevention member and a rear surface being positioned to face the first surface of the pattern jig.

13. An electrode notching method using the electrode notching device according to any one of claims 1 to 12, comprising: (S1) providing the electrodes to the transfer jig and the pattern jig; (S2) notching a portion of the edge of the electrode by irradiating a laser through the laser unit, and collecting foreign matter generated during the notching process with the suction unit.

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