Electrode Transfer System

Abstract

The present invention relates to an electrode transport system for transporting an electrode sheet having electrode tabs formed at predetermined intervals on one side thereof, comprising: a guide roller disposed along a transport direction of the electrode sheet and supporting the electrode sheet; and a tab guide unit configured to inject air toward or suck air into the electrode sheet facing the guide roller, wherein the tab guide unit includes: a guide member having at least one hole formed to allow air to flow in and out and extending along a curved surface of the guide roller; and a pump unit connected to communicate with the hole and providing suction force and injection force to the guide member.

Description

[Technical Field]

[0001] The present invention relates to an electrode transport system, and more particularly to an electrode transport system that can suppress the folding and lifting phenomena of electrode tabs during transport.

[0002] This application claims the benefit of priority based on Korean Patent Application No. 10-2023-0121373, filed on September 12, 2023, and all contents disclosed in the documents of said Korean patent application are incorporated herein by reference. [Background technology]

[0003] Secondary batteries are attracting much attention as an energy source for a variety of products, such as mobile devices and electric vehicles. These secondary batteries are attracting attention as a promising energy resource that can replace the use of existing products that use fossil fuels, and as an environmentally friendly energy source that does not produce by-products associated with energy use.

[0004] Depending on the shape of the battery case, secondary batteries are classified into cylindrical batteries or prismatic batteries, in which the jelly roll is housed in a cylindrical or prismatic metal can, and pouch-type batteries, in which the jelly roll is housed in a pouch-type case made of an aluminum laminate sheet.

[0005] The secondary battery specifically includes an electrode assembly, electrode leads, and a case. Taking a pouch-type battery as an example, the secondary battery includes an electrode assembly in which electrodes and separators are alternately stacked, electrode leads electrically connected to the electrode assembly, and a pouch-type case surrounding the electrode assembly so that the electrode leads can be led out.

[0006] The electrodes are made of a metal electrode sheet coated with an electrode material, and electrode tabs connected to electrode leads are drawn out at regular intervals from one side of the electrode sheet.

[0007] The electrode tabs are processed to be very thin, so that they may frequently be folded or broken during transportation of the electrode sheet.

[0008] Figure 1 shows an example of an electrode tab defect that occurred during an actual electrode production process.

[0009] Secondary batteries that use electrode tabs in a folded state, as shown in Figure 1, will ultimately be judged as defective, and defective electrode tabs are a direct cause of reduced production yields for secondary batteries. If such defective electrode tabs are used as assembly parts, they will also prevent the use of other normal parts. This results in a huge economic loss, so defective electrode tabs must be regularly screened and removed from the process.

[0010] Therefore, during the electrode manufacturing process, workers directly check for the folding or lifting of the electrode tabs, but it is practically difficult for workers to find all the defective electrode tabs. [Prior art documents] [Patent documents]

[0011] [Patent Document 1] Chinese Utility Model Patent No. 218731172 Summary of the Invention [Problem to be solved by the invention]

[0012] Therefore, the present invention has been created to solve the above-mentioned problems, and aims to provide an electrode transport system that can prevent damage to the electrode tabs by suppressing the folding and lifting phenomena of the electrode tabs during transport.

[0013] Other objects and advantages of the present invention can be understood from the following description and become more apparent from the embodiments of the present invention. Also, it is easily understood that the objects and advantages of the present invention can be realized by the means and combinations thereof as claimed. [Means for solving the problem]

[0014] According to the present invention, there is provided an electrode transfer system for transferring an electrode sheet having electrode tabs formed at predetermined intervals on one side thereof.

[0015] The electrode transport system includes a guide roller configured to rotate along a transport direction of the electrode sheet and support the electrode sheet; and a tab guide unit configured to inject air toward or suck air into the electrode sheet facing the guide roller, wherein the tab guide unit includes a guide member having at least one hole formed to allow air to flow in and out and extending along a curved surface of the guide roller; and a pump unit connected to communicate with the hole and providing a suction force and a spray force to the guide member.

[0016] The pump unit may include an injection pump that injects air and a suction pump that sucks air, and the holes communicating with the injection pump may be configured to inject air toward the electrode sheet, and the holes communicating with the suction pump may be configured to suck air from the electrode sheet.

[0017] The tab guide unit may further include a power switch on the guide member for operating the pump unit.

[0018] The holes may include an injection hole communicating with the injection pump and a suction hole communicating with the suction pump.

[0019] The diameter of the suction hole and the diameter of the injection hole may be different from each other.

[0020] The diameter of the intake holes may be substantially the same as the diameter of the injection holes.

[0021] The guide member may include a guide surface facing the guide roller, and the hole may be formed in the guide surface.

[0022] The injection holes and the suction holes may be arranged in a mixed manner on the guide surface.

[0023] The guide surface includes an injection portion having at least one injection hole densely arranged and an intake portion having at least one intake hole densely arranged, and the injection portion and the intake portion may be alternately positioned along the longitudinal direction or width direction of the guide member.

[0024] The guide surface may include an arcuate portion that corresponds to the curved surface of the guide roller.

[0025] The hole may have the form of either a point or a line.

[0026] In the linear hole, the hole may extend along the length or width of the guide member.

[0027] The guide member may be rotatable around a rotation axis of the guide roller while drawing an arc along the curved surface of the guide roller.

[0028] The guide member may be disposed at a position corresponding to the electrode tab of the electrode sheet supported by the guide roller.

[0029] The guide member may further include an adjustment valve that adjusts the opening of the hole to adjust the amount of air moving in and out through the hole. [Effects of the Invention]

[0030] According to the present invention, the folding phenomenon of the electrode tab can be effectively prevented.

[0031] Furthermore, according to the present invention, the phenomenon of the electrode tabs lifting up can be effectively prevented.

[0032] Furthermore, according to the present invention, it is possible to effectively prevent a decrease in production yield of secondary batteries due to defects in electrode tabs. [Brief explanation of the drawings]

[0033] [Figure 1] This is a photograph of a defective electrode tab that occurred during a conventional electrode production process. [Figure 2] 1 is a simplified schematic diagram showing the entire electrode transport system according to a first embodiment of the present invention. [Figure 3] FIG. 10 is a perspective view of a guide roller and a main part of a guide member included in a tab guide unit. [Figure 4] 4 is a simplified schematic diagram showing a side view of the guide roller and the guide member of FIG. 3. FIG. [Figure 5] FIG. 2 is a perspective view of the guide member upside down. [Figure 6] 6 is a plan view of a guide surface of the guide member of FIG. 5. FIG. [Figure 7] FIG. 10 is a plan view of a guide surface of a guide member according to any one embodiment. [Figure 8] FIG. 10 is a plan view of a guide surface of a guide member according to another embodiment. [Figure 9] FIG. 10 is a side view of a guide member according to any one embodiment, showing the internal air movement path in hidden lines. [Figure 10] FIG. 10 is a rear perspective view of a guide member according to any one of the embodiments. [Figure 11] FIG. 10 is a rear perspective view of a guide member according to another embodiment of the present invention. [Figure 12] 10 is a schematic diagram illustrating a process of correcting an electrode tab structure by moving air applied to a defective portion of the electrode tab where a folding phenomenon occurs. [Figure 13]10A and 10B are schematic diagrams illustrating a process of correcting an electrode tab structure by moving air applied to a defective portion of the electrode tab where a lifting phenomenon occurs. [Figure 14] FIG. 10 is a plan view of a guide surface of a guide member included in an electrode transport system according to a second embodiment in which suction holes and ejection holes are arranged in a mixed manner. [Figure 15] FIG. 10 is a plan view of a guide surface of a guide member included in an electrode transport system of a third embodiment in which an ejection section and an intake section are positioned separately. [Figure 16] FIG. 10 is a plan view of the guide surface of a guide member included in a fourth embodiment of an electrode transport system in which the injection sections and suction sections are alternately arranged along the longitudinal direction of the guide member. [Figure 17] FIG. 11 is a plan view of a guide surface of a guide member included in an electrode transport system according to a fifth embodiment, in which holes have a linear shape. [Figure 18] FIG. 10 is a plan view of the guide surface of a guide member included in an electrode transport system according to a sixth embodiment, in which the holes have a linear shape. [Figure 19] FIG. 11 is a plan view of a guide surface of a guide member included in an electrode transport system according to a seventh embodiment, in which holes have a linear shape. DETAILED DESCRIPTION OF THE INVENTION

[0034] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Before that, it should be noted that the terms and words used in the specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, but should be interpreted as meanings and concepts that are consistent with the technical idea of ​​the present invention, based on the principle that the inventor can appropriately define the concepts of the terms in order to best describe his / her own invention.

[0035] Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent the entire technical idea of ​​the present invention, and there may be various equivalents and modifications that can replace them at the time of filing this application.

[0036] Furthermore, in the description of the present invention, if it is determined that a specific description of related publicly known configurations or functions may obscure the gist of the present invention, the detailed description will be omitted.

[0037] The embodiments of the present invention are provided to more completely explain the present invention to those skilled in the art, and therefore the shapes and sizes of components in the drawings may be exaggerated, omitted, or shown schematically for clearer explanation. Therefore, the sizes and proportions of each component do not completely reflect the actual sizes and proportions.

[0038] Hereinafter, specific embodiments of the electrode delivery system of the present invention will be described in detail with reference to the accompanying drawings. For reference, the directions of front and back, up and down, left and right, and the like used in the following description to designate relative positions are intended to aid in understanding the invention, and unless otherwise specified, are based on the directions shown in the drawings.

[0039] The present invention relates to an electrode transport system 1 that transports an electrode sheet S including electrode tabs T formed at predetermined intervals on one side, and the electrode transport system 1 of the present invention can suppress the folding and floating phenomena of the electrode tabs T during transport.

[0040] 2 to 13 relate to an electrode transport system 1 according to a first embodiment of the present invention, and FIGS. 14 to 19 relate to electrode transport systems 1 according to second to seventh embodiments of the present invention, respectively.

[0041] The electrode transport system 1 of the present invention will be described below with reference to the drawings.

[0042] Here, the longitudinal direction of the guide roller 100 refers to the direction in which the rotating shafts 110 on both sides are extended, the longitudinal direction of the guide member 210 refers to the direction corresponding to the rotation direction of the guide roller 100, and the width direction of the guide member 210 refers to the direction corresponding to the longitudinal direction of the guide roller 100.

[0043] (First embodiment) FIG. 2 is a simplified schematic diagram showing the entire electrode transport system 1 according to the first embodiment of the present invention.

[0044] The electrode transfer system 1 includes a guide roller 100 that rotates while supporting an electrode sheet S, and a tab guide unit 200 that is positioned adjacent to the guide roller 100, guides the electrode tabs T of the electrode sheet S supported by the guide roller 100, and injects or sucks air toward the electrode tabs T.

[0045] As shown in FIG. 2, the tab guide unit 200 includes a guide member 210 and a pump unit 220.

[0046] The electrode sheet S includes a sheet containing either copper or aluminum, and an electrode material coated on the sheet.

[0047] The electrode material contains an electrode active material and a binder resin, and may further contain additives such as a conductive material, if necessary.

[0048] The electrode active material may be a positive electrode active material used in the positive electrode of a secondary battery, or a negative electrode active material used in the negative electrode of a secondary battery.

[0049] The positive electrode active material may include a lithium-containing transition metal oxide, and the negative electrode active material may include lithium metal, a carbon material, a metal compound, or a mixture thereof capable of absorbing and releasing lithium ions.

[0050] The electrode sheet S includes an electrode portion coated with an electrode material and a non-coating portion not coated with an electrode material.

[0051] The electrode portion of the electrode sheet S is located at the center of the electrode sheet S, and the uncoated portions are located at both side edges of the electrode sheet S.

[0052] A plurality of electrode tabs T are formed at regular intervals at one end of the uncoated portions located on both sides of the electrode sheet S.

[0053] The guide roller 100 is configured to rotate in the transport direction of the electrode sheet S, supports the electrode sheet S, and changes the transport direction of the supported electrode sheet S. That is, the guide roller 100 changes the transport direction of the electrode sheet S by expanding the electrode sheet S at the edge of its curved surface. At this time, the degree of direction change can be determined depending on the degree to which the electrode sheet S expands.

[0054] FIG. 3 is a perspective view of the guide roller 100 and the main part of the guide member 210 included in the tab guide unit 200, and FIG. 4 is a schematic diagram simply showing the side of the guide roller 100 and the guide member 210 of FIG.

[0055] The guide roller 100 has a cylindrical shape as shown in FIG.

[0056] The guide roller 100 can rotate by rotatably connecting the rotation shaft 110 to the roller supporters 120 provided on both sides.

[0057] In some embodiments, the rotation shaft 110 and the roller support 120 may be coupled with a bearing so that the guide roller 100 can rotate smoothly.

[0058] In some embodiments, the guide roller 100 can be passively rotated by the electrode sheet S.

[0059] In some embodiments, the guide roller 100 may be actively rotated by a separate power source.

[0060] The tab guide unit 200 includes a guide member 210 and a pump unit 220 .

[0061] The guide member 210 is disposed at a position corresponding to the guide roller 100 and guides the electrode tab T of the electrode sheet S supported by the guide roller 100 .

[0062] As shown in FIG. 3, the guide member 210 is disposed at a position corresponding to the electrode tab T of the electrode sheet S so as to be able to guide the electrode tab T effectively.

[0063] In some embodiments, the guide member 210 may be rotatably coupled to a roller support base 120 that supports the guide roller 100. Specifically, the guide member 210 is provided rotatably around the rotation axis 110 of the guide roller 100 while drawing an arc along the curved surface of the guide roller 100.

[0064] In some embodiments, a connecting support 240 extending from the roller support 120 to the guide member 210 may be coupled to the side of the guide member 210 .

[0065] In some embodiments, an end of the connecting support 240 opposite to the guide member 210 may be connected to one side of the roller support 120 so as to be rotatable around the rotation axis 110 of the roller support 120. Therefore, as the connecting support 240 rotates around the roller support 120, the guide member 210 rotates in an arc along the curved surface of the guide roller 100, starting from the rotation axis 110 of the guide roller 100.

[0066] However, the shape of the connecting support 240 does not need to be limited to that shown in FIG. 3, and the connecting support 240 can be of any shape that can enable the guide member 210 to rotate around the rotation axis 110 of the guide roller 100.

[0067] The guide member 210 includes a guide surface Sg that faces the guide roller 100 or the electrode sheet S supported by the guide roller 100 .

[0068] The guide surface Sg can be formed to include an arcuate portion that corresponds to the curved surface shape of the surface of the guide roller 100, as shown in FIG.

[0069] The guide surface Sg prevents the electrode tab T formed on one side of the electrode sheet S from being folded or bent while the electrode sheet S is bent over the guide roller 100 .

[0070] FIG. 5 is a perspective view of the guide member 210 upside down, and FIG. 6 is a plan view of the guide surface Sg of the guide member 210 of FIG.

[0071] 5 and 6, the guide member 210 includes at least one hole 211 formed to allow air to flow in and out.

[0072] In some embodiments, the holes 211 may be designed to have different shapes and diameters, or in other embodiments, the holes 211 may be designed to have substantially the same shapes and diameters.

[0073] The holes 211 are formed in the guide surface Sg of the guide member 210 as shown in FIG.

[0074] In some embodiments, the holes 211 may have the form of a point. More specifically, the holes 211 may have shapes such as a circle, an ellipse, and a polygon.

[0075] As shown in FIG. 6, the holes 211 may be aligned at predetermined intervals along the length and / or width of the guide member 210 .

[0076] 2, the pump unit 220 serves to provide suction and ejection forces of air to the guide member 210. That is, the pump unit 220 is connected to communicate with the holes 211 of the guide member 210 to provide suction and ejection forces to the guide member 210.

[0077] The pump unit 220 and the guide member 210 are connected via a hollow tube 230 such as a hose, and air pressure induced from the pump unit 220 is transmitted to the guide member 210 through the inside of the tube 230.

[0078] The pump unit 220 includes an injection pump 222 that injects air and a suction pump 221 that sucks air.

[0079] In some embodiments, one injection pump 222 may communicate with any one hole 211 or may communicate with multiple holes 211 simultaneously.

[0080] In some embodiments, one suction pump 221 can be in communication with any one hole 211 .

[0081] In some embodiments, one suction pump 221 can communicate with multiple holes 211 simultaneously.

[0082] When the injection pump 222 is operated, the holes 211 communicating with the injection pump 222 inject air toward the electrode sheet S. More specifically, the holes 211 communicating with the injection pump 222 inject air toward the electrode tabs T included in the electrode sheet S.

[0083] When the suction pump 221 is activated, the holes 211 communicating with the suction pump 221 draw in air from the direction toward the electrode sheet S. More specifically, the holes 211 communicating with the suction pump 221 draw in air from the direction toward the electrode tabs T included in the electrode sheet S.

[0084] FIG. 7 is a plan view of the guide surface Sg of the guide member 210 according to one embodiment, and FIG. 8 is a plan view of the guide surface Sg of the guide member 210 according to another embodiment.

[0085] 7 and 8, the holes 211 included in the guide member 210 include an injection hole 211b communicating with the injection pump 222 and a suction hole 211a communicating with the suction pump 221.

[0086] In some embodiments, the injection holes 211b and the intake holes 211a may be of the same shape with the same diameter.

[0087] The injection holes 211b and the suction holes 211a may be arranged in a mixed and irregular manner on the guide surface Sg, or holes 211 performing the same function may be arranged closely together.

[0088] When the holes 211 performing the same function are closely spaced and divided, the guide surface Sg includes an injection portion 210b in which at least one injection hole 211b is closely spaced, and an intake portion 210a in which at least one intake hole 211a is closely spaced.

[0089] 7, six suction holes 211a are closely arranged in a 2 x 3 rectangle to form one suction portion 210a, and six injection holes 211b are closely arranged in a 2 x 3 rectangle to form one injection portion 210b. The suction portions 210a and injection portions 210b are alternately arranged along the longitudinal direction of the guide member 210.

[0090] 8, ten suction holes 211a are aligned in a line along the moving direction of the electrode tab T to form one suction portion 210a. Ten injection holes 211b are aligned in a line along the moving direction of the electrode tab T to form one injection portion 210b. The suction portions 210a and injection portions 210b are alternately arranged along the width direction of the guide member 210.

[0091] FIG. 9 is a side view of a guide member 210 according to one embodiment, showing the internal air movement passage 212 in hidden lines.

[0092] Referring to FIG. 9, the guide member 210 includes air passages 212 therein communicating with the holes 211 , and each hole 211 communicates with the pump unit 220 via the air passages 212 .

[0093] 9, a connecting hole 216 is formed on one side of the guide member 210, and each hole 211 is connected to the connecting hole 216 through an air transfer path 212. More specifically, the air transfer paths 212 extending from each hole 211 are aligned and continue to one connecting hole 216.

[0094] Each guide member 210 includes at least two or more connecting holes 216. At least one of the connecting holes 216 communicates with the suction hole 211a and the suction pump 221, and the other connecting hole 216 communicates with the injection hole 211b and the injection pump 222.

[0095] The connection hole 216 is a portion directly connected to a pipe 230 connected to the pump unit 220, and the connection hole 216 and the pipe 230 can be coupled and fixed using a fitting member 213, etc., as needed.

[0096] The fitting member 213 is a general mechanism used when connecting a tube 230 such as a pipe or hose to another structure, and the present invention does not address the specific features of the fitting member 213.

[0097] FIG. 10 is a rear perspective view of a guide member 210 according to one of the embodiments.

[0098] 10, a pair of fitting members 213 are coupled to the rear surface of the guide member 210. One of the two fitting members 213 is coupled to a connecting hole 216 communicating with the suction hole 211a, and the other fitting member 213 is coupled to a connecting hole 216 communicating with the injection hole 211b.

[0099] FIG. 11 is a rear perspective view of a guide member 210 according to another embodiment of the present invention.

[0100] Referring to FIG. 11, the guide member 210 further includes an adjusting valve 214 for adjusting the opening amount of the hole 211 so as to adjust the amount of air flowing in and out through the hole 211 .

[0101] In some embodiments, the tab guide unit 200 may further include a power switch 215 on the guide member 210 for operating the pump unit 220 .

[0102] According to some embodiments, the adjustment valve 214 is provided on a side of the guide member 210. The guide member 210 to which the adjustment valve 214 is applied may further include an opening / closing member (not shown) configured to be able to adjust the degree of opening and closing within the hole 211. The opening / closing member can be operated in conjunction with the adjustment valve 214 provided on the outside of the guide member 210. Therefore, the guide member 210 of the present invention can adjust the opening degree within the hole 211 by operating the adjustment valve 214 to move the opening / closing member.

[0103] In some embodiments, a power switch 215 may be provided on the side of the guide member 210. The power switch 215 is connected to a pump unit 220 that is connected to the guide member 210.

[0104] The power switch 215 may be provided in the form of a button or a rotary switch, and can selectively operate any one of the suction pumps 221 and the injection pumps 222 connected to the guide member 210. For example, the tab guide unit 200 of the present invention can operate only the suction pump 221 to suck air through the guide member 210, or conversely, can operate only the injection pump 222 to inject air through the guide member 210. Alternatively, the suction pump 221 and the injection pump 222 can be selectively operated simultaneously to suck air through the guide member 210 and inject air at the same time.

[0105] Therefore, in one embodiment of the present invention, the guide member 210 can operate either one of the injection pump 222 and the suction pump 221 by operating the power switch 215 .

[0106] In another embodiment of the present invention, the guide member 210 can operate the injection pump 222 and the suction pump 221 simultaneously by operating the power switch 215 .

[0107] The air injected or sucked through the holes 211 impacts the surface of the electrode tab T located on the guide roll, as shown in FIG.

[0108] 12 and 13 are simplified schematic diagrams illustrating the process of correcting the electrode tab T structure by air movement applied to the defective portion F of the electrode tab T, respectively.

[0109] Specifically, FIG. 12 shows the process of correcting a portion of one of the electrode tabs T that is folded downward, and FIG. 13 shows the process of correcting a portion of one of the electrode tabs T that is raised upward.

[0110] 12, the upwardly moving airflow unfolds a portion of the downwardly folded electrode tab T. Therefore, the defective electrode tab T as shown in FIG. 12 can be reduced in degree of folding or restored to its original flat state by the suction force of the tab guide unit 200 provided on the upper part of the electrode sheet S.

[0111] 13, a portion of the electrode tab T folded upward is caused to lie flat by the downward airflow. Therefore, the defective electrode tab T as shown in FIG. 13 can be restored to a flat state by the jetting force of the tab guide unit 200 provided on the upper part of the electrode sheet S.

[0112] The electrode transport system 1 of the present invention may include one guide roller 100 and one corresponding tab guide unit 200, or may include a plurality of guide rollers 100 respectively arranged in various regions and a plurality of tab guide units 200 corresponding to the guide rollers 100. Therefore, by arranging the tab guide unit 200 of the present invention in the region of the guide roller 100 where defects frequently occur in the electrode tabs T of the electrode sheet S during transport, the rate of electrode tab T defects can be reduced.

[0113] (Second to Seventh Embodiments) The diameter of the suction hole 211a and the diameter of the injection hole 211b included in the guide member 210 of the present invention may be different from each other.

[0114] FIG. 14 is a plan view of the guide surface Sg of the guide member 210 included in the electrode transport system 1 of the second embodiment in which the suction holes 211a and the ejection holes 211b are arranged in a mixed manner.

[0115] As shown in FIG. 14, suction holes 211a and injection holes 211b having different diameters are arranged in a mixed manner.

[0116] The above-described arrangement of the suction holes 211a and the injection holes 211b can provide concentrated suction and injection forces to a specific narrow area of ​​the electrode tab T.

[0117] According to another embodiment, in the electrode transport system 1 of the present invention, the ejection part 210b and the suction part 210a can be freely partitioned and positioned on the guide surface Sg of the guide member 210.

[0118] FIG. 15 is a plan view of the guide surface Sg of the guide member 210 included in the electrode transport system 1 of the third embodiment in which the ejection section 210b and the suction section 210a are positioned separately.

[0119] According to FIG. 15, the injection holes 211b having different diameters are arranged in a mixed manner within the injection portion 210b, which is partitioned into a specific shape, and the suction holes 211a having different diameters are arranged in a mixed manner within the suction portion 210a, which is partitioned into a specific shape.

[0120] The arrangement of the suction holes 211a and the ejection holes 211b as described above can be optimized and applied to an electrode tab T that is folded or raised in a certain pattern. For example, the area of ​​the suction portion 210a can be designed to correspond to a defective area of ​​the electrode tab T. Also, the size of the suction holes 211a within the suction portion 210a can be freely set.

[0121] According to some embodiments, the suction holes 211a and the injection holes 211b of different sizes may be arranged densely in the suction portion 210a and the injection portion 210b, respectively, and the injection portions 210b and the suction portions 210a may be arranged alternately in a certain direction.

[0122] FIG. 16 is a plan view of the guide surface Sg of the guide member 210 included in the electrode transport system 1 of the fourth embodiment in which the ejection sections 210b and the suction sections 210a are alternately arranged along the longitudinal direction of the guide member 210. FIG.

[0123] 16, the diameters of the suction holes 211a and the injection holes 211b are different from each other. Specifically, in the electrode transport system 1 of the fourth embodiment, injection holes 211b having the same diameter are closely arranged in the injection part 210b, and suction holes 211a having the same diameter are closely arranged in the suction part 210a.

[0124] According to some embodiments, the holes 211 may have a linear shape.

[0125] FIG. 17 is a plan view of the guide surface Sg of the guide member 210 included in the electrode transport system 1 according to the fifth embodiment, in which the holes 211 have a linear shape.

[0126] 17, a plurality of linear holes 211 are formed along the width direction of the guide member 210 at predetermined intervals and extend along the length direction of the guide member 210. As shown in FIG.

[0127] The holes 211 having the above-mentioned configuration can provide a continuous suction or injection force to a relatively wide area.

[0128] According to some embodiments, the linearly formed hole 211 may be in the width direction of the guide member 210.

[0129] FIG. 18 is a plan view of the guide surface Sg of the guide member 210 included in the electrode transport system 1 according to the sixth embodiment, in which the holes 211 have a linear shape.

[0130] 18, a plurality of linear holes 211 are formed along the length of the guide member 210 at predetermined intervals and extend along the width of the guide member 210. As shown in FIG.

[0131] The holes 211 having the above-mentioned configuration can provide a continuous suction or injection force to a relatively wide area.

[0132] FIG. 19 is a plan view of the guide surface Sg of the guide member 210 included in the electrode transport system 1 according to the seventh embodiment, in which the holes 211 have a linear shape.

[0133] Referring to FIG. 19, a plurality of linear holes 211 are formed extending in the diagonal direction.

[0134] The holes 211 having the above-mentioned shape correspond to the shape of the defective portion of the electrode tab T, and can provide a continuous suction force or a jetting force to a relatively wide area.

[0135] As described in the first to seventh embodiments, the tab guide unit 200 included in the electrode transport system 1 of the present invention can optimize the efficiency of inhalation and ejection by changing the shape and arrangement of the holes 211 included in the guide member 210. That is, the efficiency of the process can be improved by changing the shape and arrangement of the holes 211 to optimize the space where the electrode tabs T are folded or raised in a specific pattern.

[0136] The present invention has been described in more detail above with reference to the drawings and embodiments, etc. However, the configurations shown in the drawings or embodiments in this specification are merely one embodiment of the present invention and do not represent all of the technical ideas of the present invention, and therefore, there may be various equivalents and modifications that can replace them at the time of filing this application. [Explanation of symbols]

[0137] 1: Electrode transport system 100: Guide roller 110: Rotation axis 120: Roller support stand 200: Tab guide unit 210: Guide member 210a: Suction part 210b: Injection part 211: Hall 211a: Intake hole 211b: Jet Hole 212: Air movement path 213: Fitting material 214: Control valve 215: Power switch 216: Connecting hall 220: Pump unit 221: Suction pump 222: Injection pump 230: Tube 240:Connection support stand S: Electrode sheet T: Electrode tab F: Defective part Ma: Air movement Ms: Movement of electrode sheet Sg: Guide surface

Claims

1. An electrode transfer system for transferring an electrode sheet having electrode tabs formed at predetermined intervals on one side thereof, a guide roller configured to rotate along a transport direction of the electrode sheet and supporting the electrode sheet; a tab guide unit configured to inject or suck air toward the opposing electrode sheet on the guide roller; The tab guide unit includes: a guide member including at least one hole formed to allow air to flow in and out and extending along the curved surface of the guide roller; a pump unit connected to communicate with the hole and providing suction and ejection forces to the guide member.

2. The pump unit comprises: an injection pump that injects air; a suction pump that draws in air, 2. The electrode transport system of claim 1, wherein the holes communicating with the injection pump are configured to inject air toward the electrode sheet, and the holes communicating with the suction pump are configured to suck air from the electrode sheet.

3. The electrode transport system according to claim 1 or 2, wherein the tab guide unit further comprises a power switch on the guide member for activating the pump unit.

4. The hole is an injection hole communicating with the injection pump; 3. The electrode transport system of claim 2, further comprising: an intake hole in communication with the intake pump.

5. The electrode transport system of claim 4 , wherein the diameter of the suction hole and the diameter of the injection hole are different from each other.

6. The electrode transport system of claim 4 , wherein the diameter of the intake hole is substantially the same as the diameter of the injection hole.

7. The electrode transport system according to claim 4 , wherein the guide member includes a guide surface facing the guide roller, and the hole is formed in the guide surface.

8. The electrode transport system according to claim 7 , wherein the injection holes and the suction holes are arranged in a mixed manner on the guide surface.

9. the guide surface includes an injection portion having at least one injection hole densely arranged therein and an intake portion having at least one intake hole densely arranged therein; The electrode transport system according to claim 7 , wherein the injection sections and the suction sections are alternately positioned along the length or width direction of the guide member.

10. The electrode transport system of claim 7 , wherein the guide surface includes an arcuate portion that corresponds to the curved surface of the guide roller.

11. The electrode transport system of claim 1 , wherein the holes have the form of one of a point and a line.

12. In the linear hole, The electrode transport system of claim 11 , wherein the holes extend along the length or width of the guide member.

13. The electrode transport system according to claim 1 or 2, wherein the guide member is rotatable around a rotation axis of the guide roller while drawing an arc along the curved surface of the guide roller.

14. The electrode transport system according to claim 1 or 2, wherein the guide member is disposed at a position corresponding to an electrode tab of an electrode sheet supported by the guide roller.

15. The electrode transport system according to claim 1 , wherein the guide member further includes an adjustment valve that adjusts the opening of the hole to adjust the amount of air moving in and out through the hole.

Images