Electrode transfer system

Abstract

Disclosed herein is an electrode transfer system for transferring an electrode sheet including electrode tabs formed at predetermined intervals on one side, the electrode transfer system including: a guide roller configured to rotate in a transfer direction of the electrode sheet and support the electrode sheet; and a tab guide unit configured to blow air or suck air toward opposite electrode tabs on the guide roller, in which 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 a curved surface of the guide roller; and a pump unit connected to the hole to communicate and provide the suction force and the ejection force to the guide member.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to an electrode transfer system, and more particularly to an electrode transfer system capable of suppressing folding and migration of an electrode tab during transfer.

[0002] This application claims the priority benefit of Korean Patent Application No. 10-2023-0121373, filed on September 12, 2023, the disclosure of which is incorporated herein by reference. BACKGROUND

[0003] Secondary batteries are receiving a great deal of attention as energy sources for a wide range of products including mobile devices and electric vehicles. As a viable energy source capable of replacing the use of conventional products using fossil fuels, these secondary batteries are receiving attention as green energy because they do not generate byproducts of energy use.

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

[0005] A secondary battery specifically includes an electrode assembly, an electrode lead, and a case. Taking a pouch-type battery as an example, a secondary battery includes an electrode assembly having electrodes and separators alternately stacked, a pouch-type case surrounding the electrode assembly, an electrode lead electrically connected, and an electrode lead protruding outward from the electrode assembly.

[0006] An electrode includes an electrode tab coated with an electrode material of a metal material, in which one side of the electrode tab has an electrode tab connected to the electrode lead and led out at a certain interval.

[0007] The thickness of the electrode tab is processed to a very small thickness, which often causes the electrode tab to be folded or broken during transfer.

[0008] Figure 1 Defects in the electrode tab during the actual electrode production process are shown.

[0009] Since a secondary battery having an electrode tab folded as shown in Figure 1 A defective electrode tab directly leads to a low manufacturing yield of a secondary battery since a secondary battery having an electrode tab folded as shown in

[0010] Therefore, during the electrode manufacturing process, an operator is responsible for detecting the above-mentioned electrode tab folding or migration, but it is difficult for the operator to detect all defective electrode tabs.

[0011] [Prior Art Document]

[0012] Chinese Registered Patent No. 218731172 SUMMARY

[0013] TECHNICAL PROBLEM

[0014] Accordingly, the present disclosure is invented to solve the above problems, and is intended to provide an electrode transfer system that can prevent damage to electrode tabs by suppressing a folding and migration phenomenon of the electrode tabs during transfer.

[0015] Other objects and advantages of the present disclosure will be understood from the following description, and will become more apparent from the embodiments of the present disclosure. It will also be apparent that the objects and advantages of the present disclosure can be achieved by the apparatus disclosed in the claims and combinations thereof.

[0016] TECHNICAL SOLUTION

[0017] According to the present disclosure, an electrode transfer system for transferring an electrode sheet including electrode tabs formed at a predetermined interval on one side is provided.

[0018] An electrode transfer system includes a guide roller configured to rotate along a transfer direction of an electrode sheet and to support the electrode sheet, and a tab guide unit configured to blow or suck air toward the opposite electrode sheet on the guide roller, wherein 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 a curved surface of the guide roller, and a pump unit connected to the hole to communicate and provide a suction force and a jet force to the guide member.

[0019] The pump unit includes a jet pump for blowing air, and a suction pump for sucking air, wherein the hole in communication with the jet pump can be configured to blow air toward the electrode sheet, and the hole in communication with the suction pump can be configured to suck air toward the electrode sheet.

[0020] The tab guide unit can be further provided with a power switch to operate the pump unit on the guide member.

[0021] The hole can include a jet hole in communication with the jet pump, and a suction hole in communication with the suction pump.

[0022] The diameter of the suction hole and the diameter of the jet hole can be different.

[0023] The diameter of the suction hole can be substantially the same as the diameter of the jet hole.

[0024] The guide member includes a guide surface opposite to the guide roller, wherein a hole can be formed in the guide surface.

[0025] The injection hole and the suction hole can be mixed and disposed on the guide surface.

[0026] The guide surface includes an injection portion having at least one or more injection holes highly concentratedly disposed and a suction portion having at least one or more suction holes highly concentratedly disposed, wherein the injection portion and the suction portion can be alternately positioned along a length direction or a width direction of the guide member.

[0027] The guide surface can include an arc-shaped portion corresponding to a curved surface of the guide roller.

[0028] The hole can have any shape among a point and a straight line.

[0029] In the straight-shaped hole, the hole can extend along a length direction or a width direction of the guide member.

[0030] The guide member can be rotatable around a rotation axis of the guide roller in an arc shape along a curved surface of the guide roller.

[0031] The guide member can be disposed in a position corresponding to the electrode tab of the electrode sheet supported on the guide roller.

[0032] The guide member can further include an adjustment valve for adjusting a hole diameter amount in the hole to adjust an air amount moved into and out of the hole.

[0033] Advantageous effects

[0034] According to the present disclosure, it is possible to effectively prevent a phenomenon of electrode tab folding.

[0035] Further, according to the present disclosure, it is possible to effectively prevent an electrode migration phenomenon.

[0036] Further, the present disclosure can effectively prevent a production yield of a secondary battery from being reduced due to a defective electrode tab. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 is a photograph of a defect of an electrode tab during a conventional electrode production process.

[0038] Figure 2 is a schematic view of an electrode transfer system according to a first embodiment of the present disclosure.

[0039] Figure 3 is a perspective view of a guide roller and a guide member included in a tab guide unit.

[0040] Figure 4 is a simplified schematic view of the side surface of the guide roller and the guide member of Figure 3

[0041] Figure 5 is a perspective view of the guide member with the top and bottom inverted.

[0042] Figure 6 is a plan view of the guide surface of the guide member of Figure 5

[0043] Figure 7 is a plan view of the guide surface of the guide member according to one embodiment.

[0044] Figure 8 is a perspective view of the guide surface of the guide member according to another embodiment.

[0045] Figure 9 is a side view of the guide member according to one embodiment, with the internal air channel indicated by dashed lines.

[0046] Figure 10 is a rear perspective view of the guide member according to one embodiment.

[0047] Figure 11 is a rear perspective view of the guide member according to another embodiment of the present disclosure.

[0048] Figure 12 is a simplified schematic view of the process of correcting the electrode tab structure by movement of air relative to the defective portion of the electrode tab that has already undergone folding.

[0049] Figure 13 is a simplified schematic view of the process of correcting the electrode tab structure by movement of air relative to the defective portion of the electrode tab that has already undergone migration.

[0050] Figure 14 is a plan view of the guide surface of the guide member including a hybrid of suction and ejection holes included in a second embodiment of an electrode transport system.

[0051] Figure 15 is a plan view of the guide surface of the guide member including a divided ejection and suction portion included in a third embodiment of an electrode transport system.

[0052] Figure 16 is a plan view of the guide surface of the guide member included in a fourth embodiment of an electrode transport system, in which ejection and suction portions are alternately arranged along the length direction of the guide member.

[0053] Figure 17 ​​is a plan view of a guide surface of a guide member included in an electrode transfer system according to the fifth embodiment, in which the hole has a linear shape.

[0054] Figure 18 is a plan view of a guide surface of a guide member included in an electrode transfer system according to the sixth embodiment, in which the hole has a linear shape.

[0055] Figure 19 is a plan view of a guide surface of a guide member included in an electrode transfer system according to the seventh embodiment, in which the hole has a linear shape. DETAILED DESCRIPTION

[0056] Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. Before that, it should be noted that the terms or words used in the specification and claims should not be interpreted as they are ordinarily or lexically understood, but should be interpreted in the meaning and concept consistent with the technical idea of the present disclosure based on the principle that the inventor can properly define the concept of the terms to best describe his / her disclosure.

[0057] Therefore, it should be understood that the embodiments described herein and the configurations shown in the drawings are only the most preferred embodiments of the present disclosure, and are not intended to exhaust the technical idea of the present disclosure, and there can be various equivalents and modifications that can replace them at the time of application.

[0058] In addition, in describing the present disclosure, the specific description of the related known configurations or features is omitted if it is determined that such a detailed description will obscure the essence of the present disclosure.

[0059] Because the embodiments of the present disclosure are provided to more fully explain the present disclosure to those having ordinary skill in the art, the shape and size of the components in the drawings can be exaggerated, omitted, or schematically shown for the sake of clarity. Therefore, the size or ratio of each component does not necessarily indicate its actual size or ratio.

[0060] Hereinafter, a specific embodiment of an electrode transfer system of the present disclosure will be described in detail with reference to the accompanying drawings. As used in the following description, unless otherwise defined, relative positional names such as front to back or up, down, left, and right are intended to help understanding of the present disclosure and refer to the orientation shown in the drawings.

[0061] The present disclosure relates to an electrode transfer system 1 for transferring an electrode sheet S including electrode tabs T formed at a predetermined interval on one side, using which a folding and migration phenomenon of the electrode tabs T during transfer can be suppressed.

[0062] Figures 2 to 13Refers to the electrode transfer system 1 according to the first embodiment of the present disclosure, and Figures 14 to 19 Respectively refer to the electrode transfer system 1 according to the second to seventh embodiments of the present disclosure.

[0063] Hereinafter, the electrode transfer system 1 of the present disclosure will be described with reference to the respective drawings.

[0064] Here, the length direction of the guide roller 100 refers to the direction in which the rotation shaft 110 extends on both sides, the length 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 length direction of the guide roller 100.

[0065] (First embodiment)

[0066] Figure 2 is a schematic view of the electrode transfer system 1 according to the first embodiment of the present disclosure.

[0067] The electrode transfer system 1 includes a guide roller 100 that rotates to support an electrode tab S and is positioned adjacent to the guide roller 100 to guide an electrode tab T of the electrode tab S supported on the guide roller 100, and a tab guide unit 200 that blows or sucks air toward the electrode tab T.

[0068] As Figure 2 shown, the tab guide unit 200 includes a guide member 210 and a pump unit 220.

[0069] The electrode tab S includes a tab including any one of copper and aluminum, and an electrode material coated on the tab.

[0070] The electrode material can include an electrode active material and a binder resin, and can further include an additive such as a conductive agent as needed.

[0071] The electrode active material can be a positive electrode active material for a positive electrode of a secondary battery or a negative electrode active material for a negative electrode of a secondary battery.

[0072] The positive electrode active material can include a lithium-containing transition metal oxide, and the negative electrode active material can include lithium metal, a carbon material, and a metal compound or a mixture thereof, from which lithium ions can be adsorbed and released.

[0073] The electrode tab S includes an electrode portion coated with the electrode material and an uncoated portion without the electrode material coated.

[0074] The electrode portion of the electrode tab S is located at the center of the electrode tab S, and the uncoated portion is located at both edge portions of the electrode tab S.

[0075] A plurality of electrode tabs T are formed at an end of either of the uncoated portions located on both sides of the electrode sheet S at intervals.

[0076] The guide roller 100 is configured to rotate along the conveying direction of the electrode sheet S to support the electrode sheet S and to redirect the conveying direction of the supported electrode sheet S. In other words, the guide roller 100 can redirect the conveying direction of the electrode sheet S by making the electrode sheet S cross the periphery of the curved surface shape. At this time, the degree of direction switching can be determined according to the degree of crossing of the electrode sheet S.

[0077] Figure 3 is a perspective view of the guide roller 100, which is the most important part of the guide member 210 included in the tab guide unit 200, and Figure 4 is Figure 3 is a simplified schematic view of the side surface of the guide roller 100 and the guide member 210 of

[0078] The guide roller 100 has a columnar shape, as Figure 3 indicated, and rotates around a rotation shaft 110.

[0079] The guide roller 100 can rotate by being coupled to allow the rotation shaft 110 to rotate around the roller support 120 disposed on both sides.

[0080] In some embodiments, the rotation shaft 110 and the roller support 120 can be bearing-coupled to allow the guide roller 100 to smoothly rotate.

[0081] In some embodiments, the guide roller 100 can be passively rotated by the electrode sheet S.

[0082] In some embodiments, the guide roller 100 can be actively rotated via a separate power source.

[0083] The tab guide unit 200 includes a guide member 210 and a pump unit 220.

[0084] The guide member 210 is disposed at a position corresponding to the guide roller 100 to guide the electrode tab T of the electrode sheet S supported on the guide roller 100.

[0085] As Figure 3 indicated, the guide member 210 is disposed at a position corresponding to the electrode tab T of the electrode sheet S to effectively guide the electrode tab T.

[0086] In some embodiments, the guide member 210 can be coupled to be able to rotate around the roller support 120 supporting the guide roller 100. Specifically, the guide member 210 can rotate around the rotation shaft 110 of the guide roller 100 in an arc shape along the curved surface of the guide roller 100.

[0087] In some embodiments, the side of the guide member 210 can be coupled to a connection support 240 extending from the roller support 120 to the guide member 210.

[0088] In some embodiments, the opposite end of the connection support 240, which is not coupled to the guide member 210, can be coupled to one side of the roller support 120, such that the connection support 240 is rotatable about the rotation axis 110 of the roller support 120. Accordingly, when the connection support 240 is rotated with respect to the roller support 120, the guide member 210 is rotated about the rotation axis 110 of the guide roller 100 in an arc shape along the curved surface of the guide roller 100.

[0089] However, the shape of the connection support 240 is not necessarily limited to Figure 3 the shape shown, and the connection support 240 can have any shape that allows the guide member 210 to be rotated about the rotation axis 110 of the guide roller 100.

[0090] The guide member 210 includes a guide surface Sg opposite to the guide roller 100 or an electrode sheet S supported on the guide roller 100.

[0091] As Figure 4 shown, the guide surface Sg can be formed to include an arc-shaped portion in an arc shape corresponding to the curved shape of the surface of the guide roller 100.

[0092] The guide surface Sg prevents the electrode tab T formed on one side from being bent or warped when the electrode sheet S is bent across the guide roller 100.

[0093] Figure 5 is a perspective view of the guide member 210 having an inverted top and bottom, and Figure 6 is Figure 5 a plan view of the guide surface Sg of the guide member 210 of

[0094] Referring to Figure 5 and Figure 6 , the guide member 210 includes at least one or more holes 211 formed to allow air to flow in and out.

[0095] In some embodiments, each hole 211 can be designed to have different shapes and diameters. Alternatively, in other embodiments, each hole 211 can be designed to be substantially all the same in shape and diameter.

[0096] As Figure 5 shown, the holes 211 are formed in the guide surface Sg of the guide member 210.

[0097] In some embodiments, the holes 211 can have a dot shape. More particularly, the holes 211 can have shapes such as a circular shape, an elliptical shape, and a polygonal shape.

[0098] As shown in Figure 6 , the plurality of holes 211 can be spaced apart along the length direction and / or the width direction of the guide member 210 and aligned at a predetermined distance.

[0099] As shown in Figure 2 , the pump unit 220 functions to provide a suction force and a jetting force 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 a suction force and a jetting force to the guide member 210.

[0100] The pump unit 220 and the guide member 210 are connected via a hollow tube 230 such as a hose, and the air pressure generated by the pump unit 220 is transmitted to the guide member 210 via the inside of the tube 230.

[0101] The pump unit 220 includes a jetting pump 222 for blowing air and a suction pump 221 for sucking air.

[0102] In some embodiments, one jetting pump 222 can communicate with any one of the holes 211, or can communicate with a plurality of holes 211 at the same time.

[0103] In some embodiments, one suction pump 221 can communicate with any one of the holes 211.

[0104] In some embodiments, one suction pump 221 can communicate with a plurality of holes 211 at the same time.

[0105] When the jetting pump 222 is operated, the hole 211 communicating with the jetting pump 222 blows air toward the electrode tab S. More specifically, the hole 211 communicating with the jetting pump 222 blows air toward the electrode tab T included in the electrode tab S.

[0106] When the suction pump 221 is operated, the hole 211 communicating with the suction pump 221 sucks air from a direction facing the electrode tab S. More specifically, the hole 211 communicating with the suction pump 221 sucks air from a direction facing the electrode tab T included in the electrode tab S.

[0107] Figure 7 is a plan view of a guide surface Sg of the guide member 210 according to one embodiment, and Figure 8 is a plan view of a guide surface Sg of the guide member 210 according to another embodiment.

[0108] Referring to Figure 7 and Figure 8 , the holes 211 included in the guide member 210 include jetting holes 211b communicating with the jetting pump 222 and suction holes 211a communicating with the suction pump 221.

[0109] In some embodiments, the spray holes 211b and the suction holes 211a can have the same shape with the same diameter as each other.

[0110] The spray holes 211b and the suction holes 211a can be irregularly mixed and disposed on the guide surface Sg, or can be closely spaced between the holes 211 performing the same function.

[0111] When the holes 211 closely disposed in the same function are divided, the guide surface Sg includes a spray portion 210b having at least one spray hole 211b closely disposed and a suction portion 210a having at least one suction hole 211a closely disposed.

[0112] Referring to Figure 7 , six suction holes 211a are closely disposed to form a 2X3 rectangle to form one suction portion 210a, and six spray holes 211b are closely disposed to form a 2X3 rectangle to form one spray portion 210b. The suction portion 210a and the spray portion 210b are alternately disposed along the length direction of the guide member 210.

[0113] Referring to Figure 8 , ten suction holes 211a are aligned in a row along the traveling direction of the electrode tab T to form one suction portion 210a. And ten spray holes 211b are aligned in a row along the traveling direction of the electrode tab T to form one spray portion 210b. The suction portion 210a and the spray portion 210b are alternately disposed along the width direction of the guide member 210.

[0114] Figure 9 is a side view of the guide member 210 according to one embodiment, in which the internal air passages 212 are indicated by dotted lines.

[0115] Referring to Figure 9 , the guide member 210 includes air passages 212 communicating with the holes 211 therein, each of the holes 211 communicating with the pump unit 220 via the air passages 212.

[0116] Referring to Figure 9 , an open connection hole 216 is formed in one side of the guide member 210, and each hole 211 is connected to the connection hole 216 via the air passages 212. More specifically, the air passages 212 extending from each hole 211 converge to extend to a single connection hole 216.

[0117] One guide member 210 includes at least two connection holes 216. At least one connection hole 216 communicates with the suction hole 211a and the suction pump 221, and the other connection hole 216 communicates with the spray hole 211b and the spray pump 222.

[0118] 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 or the like as needed.

[0119] The fitting member 213 is a general mechanism for connecting a pipe 230 such as a tube or a hose to be coupled to another structure, and specific features of the fitting member 213 are not discussed in the present disclosure.

[0120] Figure 10 is a rear perspective view of a guide member 210 according to one embodiment.

[0121] Referring to Figure 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 the connection hole 216 communicating with the suction hole 211a, and the other fitting member 213 is coupled to the connection hole 216 communicating with the injection hole 211b.

[0122] Figure 11 is a rear perspective view of a guide member 210 according to another embodiment of the present disclosure.

[0123] Referring to Figure 11 , the guide member 210 further includes an adjustment valve 214 adjusting the amount of opening in the hole 211 to adjust the amount of air moving in and out of the hole 211.

[0124] In some embodiments, the tab guide unit 200 can further include a power switch 215 to operate the pump unit 220 on the guide member 210.

[0125] In some embodiments, the adjustment valve 214 is provided on the side of the guide member 210. The guide member 210 having the adjustment valve 214 can further include an opening / closing member (not shown) configured to allow the degree of opening and closing within the adjustment hole 211. The opening / closing member can be operated by interlocking with the adjustment valve 214 provided on the outside of the guide member 210. Accordingly, the guide member 210 of the present disclosure is capable of adjusting the amount of opening in the hole 211 by manipulating the adjustment valve 214 to move the opening / closing member.

[0126] In some embodiments, the power switch 215 can be provided on the side of the guide member 210. The power switch 215 is connected to the pump unit 220 connected to the corresponding guide member 210.

[0127] The power switch 215 can be provided in a button type or a rotary type, and can selectively operate any one of the suction pump 221 and the jet pump 222 connected to the guide member 210. For example, the tab guide unit 200 of the present disclosure can operate only the suction pump 221 to suck air through the guide member 210, and conversely, can operate only the jet pump 222 to blow air through the guide member 210. Alternatively, both the suction pump 221 and the jet pump 222 can be operated to suck air through the guide member 210 while blowing air, optionally.

[0128] Accordingly, in one embodiment of the present disclosure, the guide member 210 can operate any one of the jet pump 222 and the suction pump 221 by operating the power switch 215.

[0129] In other embodiments of the present disclosure, the guide member 210 can simultaneously operate the jet pump 222 and the suction pump 221 by operating the power switch 215.

[0130] As Figure 2 shown, air blown or sucked through the hole 211 affects the surface of the electrode tab T located on the guide roller.

[0131] Figure 12 and Figure 13 are schematic diagrams showing a process of correcting the electrode tab T structure by moving air applied to the defective portion F of the electrode tab T, respectively.

[0132] Specifically, Figure 12 a process of correcting a portion of one electrode tab T folded downward is shown, and Figure 13 a process of correcting a portion of one electrode tab T migrated upward is shown.

[0133] According to Figure 12 , a portion of the electrode tab T folded downward is stretched by the upwardly moving air flow. Accordingly, as Figure 12 shown, the defective electrode tab T can be smoothed or otherwise flattened to their initial state by the suction force of the tab guide unit 200 provided on the upper portion of the electrode sheet S.

[0134] According to Figure 13 , a portion of the electrode tab T folded upward is laid down by the downwardly moving air flow. Accordingly, as Figure 13 shown, the defective electrode tab T can be restored to be flat by the jet force of the tab guide unit 200 provided on the upper portion of the electrode sheet S.

[0135] The electrode transfer system 1 of the present disclosure can include a single guide roller 100 and a single tab guide unit 200 corresponding thereto, or can include a plurality of guide rollers 100 and a plurality of tab guide units 200 corresponding to the guide rollers 100, each of which is disposed in a respective region. Accordingly, the tab guide unit 200 of the present disclosure can be disposed in a region of the guide roller 100 in which defects frequently occur in the electrode tabs T in the electrode tabs S being transferred, thereby reducing the occurrence rate of defects in the electrode tabs T.

[0136] (Second to seventh embodiments)

[0137] The diameter of the suction hole 211a and the diameter of the injection hole 211b included in the guide member 210 of the present disclosure can be different.

[0138] Figure 14 is a plan view of a guide surface Sg of the guide member 210 included in the electrode transfer system 1 of the second embodiment, in which the suction hole 211a and the injection hole 211b are disposed in a mixed form.

[0139] Referring to Figure 14 , the suction hole 211a and the injection hole 211b having different diameters are mixedly disposed.

[0140] The arrangement of the suction hole 211a and the injection hole 211b as described above can provide concentrated suction force and injection force on a small specific region of the electrode tab T.

[0141] According to another embodiment, the electrode transfer system 1 of the present disclosure can have an injection portion 210b and a suction portion 210a freely divided and located on a guide surface Sg of a guide member 210.

[0142] Figure 15 is a plan view of a guide surface Sg of the guide member 210 included in the electrode transfer system 1 of the third embodiment, in which the injection portion 210b and the suction portion 210a are divided.

[0143] Referring to Figure 15 , there is a mixture of injection holes 211b of different diameters disposed in a specific shape of the divided injection portion 210b, and a mixture of suction holes 211a of different diameters disposed in a specific shape of the divided suction portion 210a.

[0144] The above-described arrangement of the suction hole 211a and the injection hole 211b can optimize the application to the electrode tab T folded or migrated in a certain pattern. For example, the region of the suction portion 210a can be designed to correspond to the region of the defective portion of the electrode tab T. In addition, the size of the suction hole 211a within the suction portion 210a can be freely disposed.

[0145] In some embodiments, the suction holes 211a and the injection holes 211b of different sizes can be closely arranged and provided in the suction portion 210a and the injection portion 210b, respectively, and the injection portion 210b and the suction portion 210a can be alternately provided in a certain orientation.

[0146] Figure 16 is a plan view of a guide surface Sg of a guide member 210 included in the electrode transfer system 1 of the fourth embodiment, in which the injection portion 210b and the suction portion 210a are alternately provided along a length direction of the guide member 210.

[0147] Referring to Figure 16 , the suction holes 211a and the injection holes 211b have different diameters. Specifically, in the electrode transfer system 1 of the fourth embodiment, the injection holes 211b having the same diameter are closely provided in the injection portion 210b, and the suction holes 211a having the same diameter are closely provided in the suction portion 210a.

[0148] In some embodiments, the holes 211 can have a linear shape.

[0149] Figure 17 is a plan view of a guide surface Sg of a guide member 210 included in the electrode transfer system 1 according to the fifth embodiment, in which the holes 211 have a linear shape.

[0150] Referring to Figure 17 , the plurality of holes 211 having a linear shape are spaced apart from each other at a predetermined distance along a width direction of the guide member 210 and extend along a length direction of the guide member 210.

[0151] The holes 211 having the shape set as described above can provide a continuous suction force or injection force over a relatively large area.

[0152] In some embodiments, the linear holes 211 can be a width direction of the guide member 210.

[0153] Figure 18 is a plan view of a guide surface Sg of a guide member 210 included in the electrode transfer system 1 according to the sixth embodiment, in which the holes 211 have a linear shape.

[0154] Referring to Figure 18 , the plurality of holes 211 having a linear shape are spaced apart from each other at a predetermined distance along a length direction of the guide member 210 and extend along a width direction of the guide member 210.

[0155] The holes 211 having the shape set as described above can provide a continuous suction force or injection force over a relatively large area.

[0156] Figure 19 1 is a plan view of a guide surface Sg of a guide member 210 included in the electrode conveying system 1 according to the seventh embodiment, in which a hole 211 has a straight line shape.

[0157] Reference Figure 19 , forming a plurality of holes 211 having a straight line shape extending in a diagonal direction.

[0158] The hole 211 shaped as described above may provide continuous suction force or ejection force over a relatively wide area in response to the shape of the defective portion of the electrode tab T.

[0159] As described in the first to seventh embodiments above, the tab guide unit 200 included in the electrode conveying system 1 of the present disclosure can optimize the efficiency of suction and ejection by changing the shape and arrangement of the holes 211 included in the guide member 210. That is, by optimizing the area where the electrode tabs T are folded or migrated in a certain pattern, the efficiency of the process can be improved by changing the shape and arrangement of the holes 211.

[0160] The present disclosure has been described in more detail above with reference to the accompanying drawings and embodiments. However, it should be understood that the configuration shown in the drawings or embodiments described herein is only one embodiment of the present invention and does not represent all technical ideas of the present invention, and various equivalents and modifications that can be substituted for them when filing this application may exist.

[0161] [Description of Reference Signs]

[0162] 1: Electrode delivery system

[0163] 100: Guide roller

[0164] 110: Rotation axis

[0165] 120: Roller support

[0166] 200: Splice guide unit

[0167] 210: Guide component

[0168] 210a: Suction unit

[0169] 210b: Jet section

[0170] 211: Hole

[0171] 211a: Suction hole

[0172] 211b: Jet hole

[0173] 212: Air channel

[0174] 213: Assembling components

[0175] 214: regulating valve

[0176] 215: power switch

[0177] 216: connection hole

[0178] 220: pump unit

[0179] 221: suction pump

[0180] 222: jet pump

[0181] 230: tube

[0182] 240: connection support

[0183] S: electrode sheet

[0184] T: electrode tab

[0185] F: defective portion

[0186] Ma: air movement

[0187] Ms: electrode sheet movement

[0188] Sg: guide surface

Claims

1. An electrode transfer system for transferring an electrode sheet including electrode tabs formed at a predetermined interval on one side, the electrode transfer system comprising: a guide roller configured to rotate along a transfer direction of the electrode sheet and to support the electrode sheet; and a tab guide unit configured to blow air or suction air toward the opposite electrode sheet on the guide roller, wherein 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 a curved surface of the guide roller; and a pump unit connected to the hole to communicate and providing a suction force and a jet force to the guide member. 2.The electrode transfer system according to claim 1, wherein the pump unit includes: a jet pump for blowing air; and a suction pump for suctioning air, wherein the hole communicating with the jet pump is configured to blow air toward the electrode sheet, and the hole communicating with the suction pump is configured to suction air toward the electrode sheet. 3.The electrode transfer system according to claim 1, wherein the tab guide unit is further provided with a power switch to operate the pump unit on the guide member. 4.The electrode transfer system according to claim 2, wherein the hole includes: a jet hole communicating with the jet pump; and a suction hole communicating with the suction pump. 5.The electrode transfer system according to claim 4, wherein a diameter of the suction hole and a diameter of the jet hole are different. 6.The electrode transfer system according to claim 4, wherein a diameter of the suction hole is substantially the same as a diameter of the jet hole. 7.The electrode transfer system according to claim 4, wherein the hole is formed in the guide surface. 8.The electrode transfer system according to claim 7, wherein the jet hole and the suction hole are mixed and disposed on the guide surface. The guide member comprises a guide surface opposite the guide roller, wherein 9.The electrode transfer system according to claim 7, wherein the guide surface includes a jet portion having at least one or more jet holes disposed highly concentrated and a suction portion having at least one or more suction holes disposed highly concentrated, wherein the jet portion and the suction portion are alternately positioned along a length direction or a width direction of the guide member. 10.The electrode transfer system according to claim 7, wherein the guide surface includes an arc-shaped portion corresponding to a curved surface of the guide roller. 11.The electrode transfer system according to claim 1, wherein the hole has any shape among a point and a straight line. 12.The electrode transfer system according to claim 11, wherein in the straight hole, the hole extends along a length direction or a width direction of the guide member. 13.The electrode transfer system according to claim 1, wherein the guide member is rotatable around a rotation axis of the guide roller in an arc shape along a curved surface of the guide roller. 14.The electrode transfer system according to claim 1, wherein ​ ​ ​ The guide member is provided at a position corresponding to the electrode tab of the electrode sheet supported on the guide roller.

15. The electrode transfer system of claim 1, wherein The guide member further includes a regulating valve for regulating an amount of opening in the hole to regulate an amount of air moved into and out of the hole.

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