Electrode notching apparatus

Abstract

The present invention provides an electrode notching apparatus (10) comprising: a transfer unit (100) for transferring an electrode sheet (50); a laser irradiation unit (200) for irradiating a notching region (R), through which the electrode sheet (50) passes, with laser; a tension jig (300) that can move to a first position (P1) adjacent to the notching region (R) and to a second position (P2) spaced apart from the first position (P1); a jig moving unit (400) for moving the tension jig (300) to the first position (P1) and the second position (P2); and a cleaning unit (500) for cleaning the tension jig (300) located at the second position (P2). The tension jig (300) may include a rotatably installed tension roller (322). When the tension jig (300) is at the first position (P1), the tension roller (322) can come into contact with the electrode sheet (50) and apply tension to the electrode sheet (50) in the notching region (R).

Description

Electrode notching device

[0001] This application claims the benefit of priority based on Korean Patent Application No. 10-2025-0031555 filed on March 11, 2025, and all contents disclosed in the document of said Korean patent application are incorporated herein as part of this specification.

[0002] The present invention relates to an electrode notching device that reduces or prevents notching defects, electrode sheet contamination, and secondary battery defects caused therefrom.

[0003] Generally, a secondary battery is completed by manufacturing an electrode by applying an electrode mixture, comprising an electrode active material, a conductive agent, a binder, etc., onto an electrode current collector and drying it, stacking the manufactured electrode together with a separator, and then embedding and sealing it in a battery case along with an electrolyte.

[0004] Meanwhile, the electrode can be manufactured by forming an electrode tab on the uncoated portion of an electrode sheet that is not coated with an electrode active material using a notching device, and then cutting the electrode sheet to a predetermined length.

[0005] When forming electrode tabs using a laser notching device, foreign substances such as fumes generated during notching accumulate or adhere to a tension member (e.g., a pattern jig) that applies tension to the notching area, resulting in notching defects, electrode sheet contamination, and secondary battery defects (e.g., low voltage defects). Accordingly, a method to effectively solve these problems is required.

[0006] A related prior art document is Korean Registered Patent No. 10-2658002.

[0007] The present invention has been devised to solve the aforementioned problems and aims to provide an electrode notching device that reduces or prevents notching defects, electrode sheet contamination, and secondary battery defects (e.g., low voltage defects) caused thereby.

[0008] In addition, the present invention aims to provide an electrode notching device that improves the cleaning performance of a tension member, reduces cleaning costs, and reduces or prevents contamination of the electrode sheet by foreign matter scattered during cleaning.

[0009] In addition, the present invention aims to provide an electrode notching device that facilitates the installation, replacement, and maintenance of tension members and reduces maintenance costs.

[0010] In addition, the present invention aims to provide an electrode notching device that is easily implemented at low cost.

[0011] In addition, the present invention aims to provide an electrode notching device that improves electrode productivity.

[0012] The technical problems of the present invention are not limited to the purposes mentioned above, and other unmentioned purposes and advantages of the present invention may be understood from the following description and will be more clearly understood by the embodiments of the present invention. Furthermore, it will be readily apparent that the purposes and advantages of the present invention can be realized by the means and combinations thereof set forth in the claims.

[0013] To solve the above-mentioned problem, the present invention provides an electrode notching device (10) comprising a transfer unit (100), a laser irradiation unit (200), a tension jig (300), a jig moving unit (400), and a cleaning unit (500).

[0014] The above transfer unit (100) can transfer the electrode sheet (50).

[0015] The laser irradiation unit (200) can irradiate a laser to the notching area (R) through which the electrode sheet (50) passes.

[0016] The tension jig (300) may be movable to a first position (P1) adjacent to the notching area (R) and a second position (P2) spaced apart from the first position (P1).

[0017] The above jig moving part (400) can move the tension jig (300) to the first position (P1) and the second position (P2).

[0018] The cleaning unit (500) can clean the tension jig (300) located at the second position (P2).

[0019] The above tension jig (300) may include a tension roller (322).

[0020] The tension roller (322) can be rotatably installed.

[0021] When the tension jig (300) is positioned at the first position (P1), the tension roller (322) can apply tension to the electrode sheet (50) within the notching area (R) by contacting the electrode sheet (50).

[0022] In one embodiment, a pair of tension jigs (300) located at the first position (P1) and the second position (P2), respectively, may be provided.

[0023] In one embodiment, the tension jig (300) may include a first tension part (310) and a second tension part (320).

[0024] When the tension jig (300) is positioned at the first position (P1), the first tension part (310) and the second tension part (320) can be positioned upstream and downstream of the notching area (R), respectively, in the direction of transport of the electrode sheet (50).

[0025] The first tension section (310) and the second tension section (320) may be located adjacent to the notching area (R).

[0026] The first tension part (310) and the second tension part (320) can apply tension to the electrode sheet (50) within the notching area (R) by contacting the electrode sheet (50).

[0027] The first tension part (310) or the second tension part (320) may include the tension roller (322).

[0028] In one embodiment, the second tension part (320) may include the tension roller (322).

[0029] In one embodiment, the first tension member (310) may include a cantilever (312).

[0030] The above cantilever (312) can be extended toward the second tension part (320).

[0031] When the tension jig (300) is positioned at the first position (P1), the cantilever (312) can apply tension to the electrode sheet (50) within the notching area (R) by contacting the electrode sheet (50).

[0032] In addition, to solve the above-mentioned problem, the present invention provides an electrode notching device (10) comprising a transfer unit (100), a laser irradiation unit (200), and a tension jig (300).

[0033] The above transfer unit (100) can transfer the electrode sheet (50).

[0034] The laser irradiation unit (200) can irradiate a laser to the notching area (R) through which the electrode sheet (50) passes.

[0035] The above tension jig (300) may include a first tension part (310) and a second tension part (320).

[0036] The first tension section (310) and the second tension section (320) can be located upstream and downstream of the notching area (R), respectively, in the conveying direction of the electrode sheet (50).

[0037] The first tension section (310) and the second tension section (320) may be located adjacent to the notching area (R).

[0038] The first tension part (310) or the second tension part (320) may be formed to extend toward the second tension part (320) or the first tension part (310).

[0039] The first tension part (310) or the second tension part (320) may include a cantilever (312).

[0040] The cantilever (312) can be in contact with the electrode sheet (50) and apply tension to the electrode sheet (50) within the notching area (R).

[0041] The second tension part (320) or the first tension part (310) may include a tension roller (322).

[0042] The tension roller (322) can be rotatably installed.

[0043] The tension roller (322) can apply tension to the electrode sheet (50) within the notching area (R) by contacting the electrode sheet (50).

[0044] In one embodiment, the tension jig (300) may have an internal space (330) and a body part (340).

[0045] The above internal space (330) may be formed on one side of the first tension part (310) and the second tension part (320) in a first direction parallel to the thickness direction of the electrode sheet (50) in the above notching area (R).

[0046] The above internal space (330) can be connected to the above notching area (R) and the above first direction.

[0047] The above body part (340) can be combined with the first tension part (310) and the second tension part (320).

[0048] The above body part (340) can define the above internal space (330).

[0049] In one embodiment, the first tension part (310) or the second tension part (320) including the tension roller (322) may further include a roller shaft (324) and a support frame (326).

[0050] The roller shaft (324) can be formed to extend in the width direction of the electrode sheet (50).

[0051] The tension roller (322) may be rotatably installed on the roller shaft (324), or the roller shaft (324) may rotate together with the tension roller (322).

[0052] The support frame (326) can be combined with the roller shaft (324).

[0053] The support frame (326) can support the roller shaft (324).

[0054] The support frame (326) can be combined with the other end of the first direction of the body part (340).

[0055] The support frame (326) can be extended in a direction intersecting the first direction and the width direction.

[0056] The support frame (326) may face the internal space (330) in the first direction.

[0057] In one embodiment, the cleaning unit (500) may include one or more first rotary brushes (510).

[0058] Each of the above first rotating brushes (510) may be formed to extend in a direction parallel to the central axis of the tension roller (322) of the tension jig (300) located at the above second position (P2).

[0059] Each of the above first rotary brushes (510) may include a first brush shaft (512) and a plurality of first brush bristles (514).

[0060] The first brush shaft (512) may be rotatable.

[0061] The plurality of first brush bristles (514) can be formed to protrude outward from the first brush shaft (512).

[0062] The plurality of first brush bristles (514) can come into contact with the tension roller (322) of the tension jig (300) located at the second position (P2) according to the rotation of the first brush shaft (512).

[0063] In addition, to solve the above-mentioned problem, the present invention provides an electrode notching device (10) comprising a transfer unit (100), a laser irradiation unit (200), a tension jig (300), and a cleaning unit (500).

[0064] The above transfer unit (100) can transfer the electrode sheet (50).

[0065] The laser irradiation unit (200) can irradiate a laser to the notching area (R) through which the electrode sheet (50) passes.

[0066] The above tension jig (300) may include a tension roller (322).

[0067] The tension roller (322) can be rotatably installed.

[0068] The tension roller (322) can apply tension to the electrode sheet (50) within the notching area (R) by contacting the electrode sheet (50).

[0069] The cleaning unit (500) may include one or more first rotary brushes (510).

[0070] Each of the above first rotary brushes (510) may include a first brush shaft (512) and a plurality of first brush bristles (514).

[0071] The first brush shaft (512) may be formed to extend in a direction parallel to the center axis of the tension roller (322).

[0072] The first brush shaft (512) may be rotatable.

[0073] The plurality of first brush bristles (514) can be formed to protrude outward from the first brush shaft (512).

[0074] The plurality of first brush bristles (514) can come into contact with the tension roller (322) according to the rotation of the first brush shaft (512).

[0075] In one embodiment, a pair of the first rotary brushes (510) may be provided.

[0076] The above pair of first rotating brushes (510) may be positioned on both sides of the tension roller (322) with the tension roller (322) in between.

[0077] In one embodiment, the pair of first rotating brushes (510) can rotate in opposite directions to each other.

[0078] In one embodiment, the tension jig (300) may include a first tension part (310), a second tension part (320), an internal space (330), and a body part (340).

[0079] The first tension section (310) and the second tension section (320) can be located upstream and downstream of the notching area (R), respectively, in the conveying direction of the electrode sheet (50).

[0080] The first tension section (310) and the second tension section (320) may be located adjacent to the notching area (R).

[0081] The first tension part (310) and the second tension part (320) can apply tension to the electrode sheet (50) within the notching area (R) by contacting the electrode sheet (50).

[0082] The above internal space (330) may be formed on one side of the first tension part (310) and the second tension part (320) in a first direction parallel to the thickness direction of the electrode sheet (50) in the above notching area (R).

[0083] The above internal space (330) can be connected to the above notching area (R) and the above first direction.

[0084] The above body part (340) can be combined with the first tension part (310) and the second tension part (320).

[0085] The above body part (340) can define the above internal space (330).

[0086] The first tension part (310) or the second tension part (320) may include the tension roller (322).

[0087] Among the above one or more first rotary brushes (510), at least one first rotary brush (510) may be located inside the internal space (330).

[0088] In one embodiment, the tension jig (300) may include a first surface (F1) and a second surface (F2).

[0089] The first surface (F1) and the second surface (F2) can be located upstream and downstream of the tension roller (322), respectively, in the conveying direction of the electrode sheet (50).

[0090] The first surface (F1) and the second surface (F2) may be in contact with or adjacent to the electrode sheet (50).

[0091] The cleaning unit (500) may further include a second rotating brush (520) and a third rotating brush (530).

[0092] The second rotating brush (520) may include a second brush shaft (522) and a plurality of second brush bristles (524).

[0093] The second brush shaft (522) may be positioned facing the first surface (F1).

[0094] The second brush shaft (522) may be rotatable.

[0095] The plurality of second brush bristles (524) can be formed to protrude outward from the second brush shaft (522).

[0096] The plurality of second brush bristles (524) can come into contact with the first surface (F1) according to the rotation of the second brush axis (522).

[0097] The above third rotating brush (530) may include a third brush shaft (532) and a plurality of third brush bristles (534).

[0098] The third brush shaft (532) can be positioned facing the second surface (F2).

[0099] The third brush shaft (532) can be rotated.

[0100] The plurality of third brush bristles (534) can be formed to protrude outward from the third brush shaft (532).

[0101] The plurality of third brush bristles (534) can come into contact with the second surface (F2) according to the rotation of the third brush axis (532).

[0102] According to embodiments of the present invention, a tension jig (300) equipped with a tension roller (322) can be easily and automatically cleaned. Accordingly, the maintenance cost of the electrode notching device (10) is reduced, and notching defects caused by foreign matter, contamination of the electrode sheet (50), and secondary battery defects (e.g., low voltage defects) resulting therefrom can be reduced or prevented.

[0103] Additionally, the tension jig (300) equipped with a tension roller (322) can be cleaned at a second position (P2) spaced apart from the electrode sheet (50). Accordingly, since the constraints on the size, configuration, and / or position of the cleaning unit (500) are reduced, cleaning performance can be improved and cleaning costs can be reduced. In addition, contamination of the electrode sheet (50) by foreign matter scattered during the cleaning of the tension jig (300) can be reduced or prevented.

[0104] In addition, since the tension roller (322) is provided on the tension jig (300), the installation, replacement, and maintenance of the tension roller (322) can be made easier. Also, since the tension roller (322) is provided on the tension jig (300), the pattern jig of the conventional electrode notching device (10) can be replaced with the tension jig (300) of the present invention. Accordingly, since most of the components of the conventional electrode notching device (10) (e.g., all components except the conventional pattern jig) can be used as is, the electrode notching device (10) of the present invention can be easily implemented at a low cost.

[0105] In addition, since tension is applied to the electrode sheet (50) within the notching area (R) by a rotating tension roller (322), foreign matter that adheres or is attached to the tension jig (300) can be reduced. Accordingly, notching defects, contamination of the electrode sheet (50), and secondary battery defects caused therefrom (e.g., low voltage defects) can be reduced or prevented.

[0106] According to embodiments of the present invention, notching of the electrode sheet (50) using the tension jig (300) and cleaning of the tension jig (300) can be performed in parallel. Accordingly, electrode productivity can be improved.

[0107] According to embodiments of the present invention, since the first and second tensioning parts (310, 320) can effectively apply tension to the electrode sheet (50) within the notching area (R), notching defects can be prevented. In addition, since the tension roller (322) of the first or second tensioning part (310, 320) rotates, foreign matter that is stuck or attached to the tension jig (300) can be reduced.

[0108] According to embodiments of the present invention, a second tensioning part (320) located downstream (e.g., lower) of the first tensioning part (310) and capable of having more foreign matter adhered or attached than the first tensioning part (310) includes a tension roller (322), so that foreign matter adhered or attached to the tensioning jig (300) can be effectively reduced. Accordingly, notching defects, contamination of the electrode sheet (50), and secondary battery defects (e.g., low voltage defects) caused therefrom can be reduced or prevented.

[0109] According to embodiments of the present invention, the distance between the two regions where the electrode sheet (50) contacts the first and second tension sections (310, 320), respectively, can be reduced. Accordingly, even if the second tension section (320) includes a tension roller (322), the tension jig (300) can effectively apply tension to the electrode sheet (50) within the notching region (R), thereby preventing notching defects.

[0110] According to embodiments of the present invention, since foreign matter can be accommodated in the internal space (330) of the tension jig (300), foreign matter that is fixed or attached to the first and second tension parts (310, 320) or adheres to the electrode sheet (50) can be reduced.

[0111] According to embodiments of the present invention, foreign matter contained in the internal space (330) may be blocked by the support frame (326) and may not be able to exit the internal space (330). Additionally, since the tension roller (322) may be positioned spaced apart from the inner surface of the body part (340) by the support frame (326), foreign matter contained in the internal space (330) may not adhere to the tension roller (322) or exit to the outside through the tension roller (322). Accordingly, notching defects, contamination of the electrode sheet (50), and secondary battery defects caused therefrom (e.g., low voltage defects) can be reduced or prevented.

[0112] According to embodiments of the present invention, a rotating first rotating brush (510) cleans the tension roller (322), and since the rotation axis (center axis) of the tension roller (322) and the first rotating brush (510) are parallel to each other, the cleaning unit (500) can effectively clean the tension roller (322). If the brush does not rotate, the tension roller (322) may be incompletely cleaned. This may be because the brush can clean while rotating the tension roller (322).

[0113] According to embodiments of the present invention, the cleaning unit (500) can effectively clean the tension roller (322).

[0114] According to embodiments of the present invention, since the first rotating brush (510) can be located inside the tension jig (300), the cleaning unit (500) can effectively clean not only the tension roller (322) but also the inner surface of the tension jig (300).

[0115] According to embodiments of the present invention, the cleaning unit (500) can effectively clean not only the tension roller (322) but also the outer surface of the tension roller (322) that faces or contacts the electrode sheet (50).

[0116] In addition to the effects described above, the specific effects of the present invention are described together with the specific details for implementing the invention below.

[0117] FIGS. 1 and FIGS. 2 are schematic perspective views of an electrode notching device according to one embodiment of the present invention.

[0118] FIGS. 3 and FIGS. 4 are a perspective view and an exploded perspective view showing the tension jig and the jig moving part of FIGS. 1 and FIGS. 2.

[0119] FIGS. 5 to 9 are perspective, front, left side, and right side views showing the tension jig of FIGS. 1 to 4.

[0120] FIGS. 10 to 12 are enlarged perspective, side, and cross-sectional views of part A of FIG. 2.

[0121] [Explanation of the symbol]

[0122] 10: Electrode notching device

[0123] 50: Electrode sheet R: Notching area

[0124] 100: Transfer unit 200: Laser irradiation unit

[0125] 300: Tension Jig

[0126] 310: 1st tension section 312: Cantilever

[0127] 320: Second tension section 322: Tension roller

[0128] 324: Roller shaft 326: Support frame

[0129] 330: Interior space 340: Body part

[0130] F1: Page 1 F2: Page 2

[0131] 400: Jig moving part 410: Jig rotation axis

[0132] 500: Cleaning section

[0133] 510: 1st rotary brush

[0134] 512: 1st brush axis 514: 1st brush bristles

[0135] 520: Second rotary brush

[0136] 522: Second brush axis 524: Second brush bristles

[0137] 530: 3rd rotation brush

[0138] 532: 3rd brush axis 534: 3rd brush bristles

[0139] The aforementioned objectives, features, and advantages are described in detail below with reference to the attached drawings, thereby enabling those skilled in the art to easily implement the technical concept of the present invention. In describing the present invention, detailed descriptions of known technologies related to the present invention are omitted if it is determined that such descriptions would unnecessarily obscure the essence of the invention. Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings. In the drawings, the same reference numerals are used to indicate the same or similar components.

[0140] Although terms such as "first," "second," etc., are used to describe various components, it goes without saying that these components are not limited by these terms. These terms are used merely to distinguish one component from another, and unless specifically stated otherwise, the first component may also be the second component.

[0141] Throughout the specification, unless specifically stated otherwise, each component may be singular or plural.

[0142] In the following, the statement that any configuration is placed on the "upper (or lower)" of a component or on the "upper (or lower)" of a component may mean not only that any configuration is placed in contact with the upper (or lower) surface of said component, but also that another configuration may be interposed between said component and any configuration placed on (or below) said component.

[0143] In addition, where it is stated that one component is "connected," "combined," or "connected" to another component, it should be understood that while the components may be directly connected or connected to each other, another component may be "interposed" between each component, or each component may be "connected," "combined," or "connected" through another component.

[0144] Singular expressions used in this specification include plural expressions unless the context clearly indicates otherwise. In this application, terms such as "composed of" or "comprising" should not be interpreted as necessarily including all of the various components or steps described in the specification, and should be interpreted as meaning that some of the components or steps may be omitted or additional components or steps may be included.

[0145]

[0146] FIGS. 1 and 2 are schematic perspective views of an electrode notching device according to an embodiment of the present invention. FIGS. 3 and 4 are a perspective view and an exploded perspective view, respectively, of the tension jig and the jig moving part of FIGS. 1 and 2. FIGS. 5 to 9 are a perspective view, a front view, a left side view, and a right side view, respectively, of the tension jig of FIGS. 1 to 4. FIGS. 10 to 12 are an enlarged perspective view, a side view, and a cross-sectional view of part A of FIG. 2.

[0147]

[0148] [First embodiment of the electrode notching device]

[0149] Referring to FIGS. 1 to 4, the electrode notching device (10) according to the first embodiment may include a transfer unit (100), a laser irradiation unit (200), a tension jig (300), a jig moving unit (400), and a cleaning unit (500).

[0150] The transfer unit (100) may include a transfer roller. The transfer unit (100) may transfer an electrode sheet (50).

[0151] The laser irradiation unit (200) can irradiate a laser onto the notching area (R). Here, the notching area (R) may be an area through which the electrode sheet (50) (e.g., an uncoated portion) passes. The uncoated portion may be a widthwise end of the electrode sheet (50) where the electrode active material is not coated.

[0152] The tension jig (300) can move to a first position (P1) adjacent to the notching area (R) and a second position (P2) spaced apart from the first position (P1).

[0153] One or more tension jigs (300) may be provided. A pair of tension jigs (300) may be positioned at a first position (P1) and a second position (P2), respectively.

[0154] Accordingly, notching of the electrode sheet (50) using the tension jig (300) and cleaning of the tension jig (300) can be performed in parallel. Accordingly, electrode productivity can be improved.

[0155] Referring further to FIGS. 5 through 9, the tension jig (300) may include first and second tension parts (310, 320). The tension jig (300) may further include an internal space (330) and a body part (340). The tension jig (300) may include a first surface (F1) and a second surface (F2). Hereinafter, each component of the tension jig (300) will be examined in detail based on the case where the tension jig (300) is located at a first position (P1).

[0156] The first and second tension sections (310, 320) may be located upstream and downstream of the notching area (R), respectively, in the conveying direction of the electrode sheet (50). Additionally, the first and second tension sections (310, 320) may be located adjacent to the notching area (R). Additionally, the first and second tension sections (310, 320) may face the notching area (R) in the conveying direction. Furthermore, the first and second tension sections (310, 320) may apply tension to the electrode sheet (50) within the notching area (R) by contacting the electrode sheet (50).

[0157] The first and second tension sections (310, 320) can define a notching area (R). This means that the area (notching area) where the laser irradiation section (200) can stably notch the electrode sheet (50) is (directly) defined by the first and second tension sections (310, 320) that apply tension to the electrode sheet (50). For example, the position, size, etc. of the notching area (R) may be limited by the position, spacing, etc. of the first and second tension sections (310, 320).

[0158] The first or second tension part (310, 320) may include a tension roller (322).

[0159] Accordingly, the first and second tensioning sections (310, 320) can effectively apply tension to the electrode sheet (50) within the notching area (R), thereby preventing notching defects. Additionally, since the tension roller (322) of the first or second tensioning section (310, 320) rotates, foreign matter that adheres or is attached to the tension jig (300) can be reduced.

[0160] For example, the second tension part (320) may include a tension roller (322).

[0161] Accordingly, since the second tensioning section (320), which is located downstream (e.g., lower) of the first tensioning section (310) and can have more foreign matter adhered or attached than the first tensioning section (310), includes a tension roller (322), the foreign matter that adheres or attaches to the tensioning jig (300) can be effectively reduced. Accordingly, notching defects, contamination of the electrode sheet (50), and secondary battery defects (e.g., low voltage defects) caused therefrom can be reduced or prevented.

[0162] At this time, the first tension member (310) may include a cantilever (312). The cantilever (312) may be formed to extend toward the second tension member (320). The cantilever (312) may apply tension to the electrode sheet (50) in contact with the electrode sheet (50) within the notching region (R).

[0163] Accordingly, the distance between the two regions where the electrode sheet (50) contacts the first and second tension sections (310, 320), respectively, can be reduced. Accordingly, even if the second tension section (320) includes a tension roller (322), the tension jig (300) can effectively apply tension to the electrode sheet (50) within the notching region (R), thereby preventing notching defects.

[0164] In contrast, if the first tension section (310) includes a tension roller (322) in the same way as the second tension section (320), the distance may increase by the radius of the tension roller (322). Consequently, insufficient tension is applied to the electrode sheet (50) within the notching area (R), so a notching defect may occur.

[0165] The tension roller (322) can be rotatably installed. The tension roller (322) can be formed to extend in the width direction of the electrode sheet (50). The tension roller (322) can apply tension to the electrode sheet (50) within the notching area (R) by contacting the electrode sheet (50).

[0166] The first or second tensioning part (310, 320) including the tensioning roller (322) may further include a roller shaft (324) and a support frame (326). For example, the second tensioning part (320) may further include a roller shaft (324) and a support frame (326).

[0167] The roller shaft (324) may be formed to extend in the width direction of the electrode sheet (50). A tension roller (322) may be rotatably installed on the roller shaft (324), or the roller shaft (324) may rotate together with the tension roller (322).

[0168] The support frame (326) can be combined with the roller shaft (324). The support frame (326) can support the roller shaft (324).

[0169] The support frame (326) may be coupled to the other end (e.g., the front end) of the first direction of the body part (340). Here, the first direction may be the thickness direction of the electrode sheet (50) in the notching area (R). For example, the first direction may be the front-rear direction. Additionally, the support frame (326) may be formed to extend in a direction that intersects the first direction and the width direction of the electrode sheet (50) (e.g., the transport direction of the electrode sheet (50)). Additionally, the support frame (326) may face the internal space (330) in the first direction.

[0170] Accordingly, foreign matter contained in the internal space (330) may be blocked by the support frame (326) and unable to exit the internal space (330). Additionally, since the tension roller (322) may be positioned apart from the inner surface of the body part (340) by the support frame (326), foreign matter contained in the internal space (330) may not adhere to the tension roller (322) or escape to the outside through the tension roller (322). Accordingly, notching defects, contamination of the electrode sheet (50), and secondary battery defects caused therefrom (e.g., low voltage defects) can be reduced or prevented.

[0171] The internal space (330) may be formed on one side (e.g., the rear side) of the first direction than the first and second tension sections (310, 320). Additionally, the internal space (330) may face at least partially the first direction with the first tension section (310) and / or the second tension section (320). Additionally, the internal space (330) may be in communication with the notching area (R) in the first direction.

[0172] Accordingly, since foreign matter can be accommodated in the internal space (330) of the tension jig (300), foreign matter that is fixed or attached to the first and second tension parts (310, 320) or adheres to the electrode sheet (50) can be reduced.

[0173] The body portion (340) can be combined with the first and second tension portions (310, 320). The body portion (340) may have an internal space (330). The body portion (340) may define the internal space (330). The body portion (340) may have a 'U' shape.

[0174] The first surface (F1) and the second surface (F2) may be located upstream and downstream of the tension roller (322), respectively, in the conveying direction of the electrode sheet (50). Additionally, the first surface (F1) and the second surface (F2) may be in contact with or adjacent to the electrode sheet (50).

[0175] The jig moving part (400) can be combined with one or more tension jigs (300). The jig moving part (400) may include a jig rotation axis (410). The jig moving part (400) can rotate around the jig rotation axis (410). The jig moving part (400) can move each tension jig (300) to a first position (P1) and a second position (P2).

[0176] The cleaning unit (500) can clean the tension jig (300) located at the second position (P2).

[0177] In this way, the electrode notching device (10) may include a transfer unit (100), a laser irradiation unit (200), a tension jig (300), a jig moving unit (400), and a cleaning unit (500). Accordingly, the tension jig (300) equipped with a tension roller (322) can be easily and automatically cleaned. Accordingly, the maintenance cost of the electrode notching device (10) is reduced, and notching defects caused by foreign matter, contamination of the electrode sheet (50), and secondary battery defects (e.g., low voltage defects) resulting therefrom can be reduced or prevented.

[0178] Additionally, the tension jig (300) equipped with a tension roller (322) can be cleaned at a second position (P2) spaced apart from the electrode sheet (50). Accordingly, since the constraints on the size, configuration, and / or position of the cleaning unit (500) are reduced, cleaning performance can be improved and cleaning costs can be reduced. In addition, contamination of the electrode sheet (50) by foreign matter scattered during the cleaning of the tension jig (300) can be reduced or prevented.

[0179] In addition, since the tension roller (322) is provided on the tension jig (300), the installation, replacement, and maintenance of the tension roller (322) can be made easier. Also, since the tension roller (322) is provided on the tension jig (300), the pattern jig of the conventional electrode notching device (10) can be replaced with the tension jig (300) of the present invention. Accordingly, since most of the components of the conventional electrode notching device (10) (e.g., all components except the conventional pattern jig) can be used as is, the electrode notching device (10) of the present invention can be easily implemented at a low cost.

[0180] In addition, since tension is applied to the electrode sheet (50) within the notching area (R) by a rotating tension roller (322), foreign matter that adheres or is attached to the tension jig (300) can be reduced. Accordingly, notching defects, contamination of the electrode sheet (50), and secondary battery defects caused therefrom (e.g., low voltage defects) can be reduced or prevented.

[0181] Referring further to FIGS. 10 to 12, the cleaning unit (500) may include one or more first rotary brushes (510). The cleaning unit (500) may further include a second rotary brush (520) and a third rotary brush (530).

[0182] Each first rotating brush (510) may include a first brush shaft (512) and a plurality of first brush bristles (514).

[0183] The first brush shaft (512) may be formed to extend in a direction parallel to the central axis of the tension roller (322) of the tension jig (300) located at the second position (P2). Here, the central axis of the tension roller (322) may be in a direction parallel to the width direction of the electrode sheet (50). The first brush shaft (512) may rotate.

[0184] A plurality of first brush bristles (514) may be formed to protrude outward from the first brush shaft (512). A plurality of first brush bristles (514) may come into contact with the tension roller (322) of the tension jig (300) located at the second position (P2) depending on the rotation of the first brush shaft (512).

[0185] Accordingly, the first rotating brush (510) rotates and cleans the tension roller (322), and since the rotation axis (center axis) of the tension roller (322) and the first rotating brush (510) are parallel to each other, the cleaning unit (500) can effectively clean the tension roller (322). If the brush does not rotate, the tension roller (322) may be incompletely cleaned. This may be because the brush can clean while rotating the tension roller (322).

[0186] A pair of first rotating brushes (510) may be provided. A pair of first rotating brushes (510) may be positioned on both sides of the tension roller (322) with the tension roller (322) in between. For example, a pair of first rotating brushes (510) may be positioned with the tension roller (322) of the tension jig (300) located at the second position (P2) in between.

[0187] Accordingly, the cleaning unit (500) can effectively clean the tension roller (322).

[0188] The above pair of first rotating brushes (510) can rotate in opposite directions.

[0189] Accordingly, the cleaning unit (500) can effectively clean the tension roller (322).

[0190] Among one or more first rotating brushes (510), at least one first rotating brush (510) may be located inside the internal space (330) of the tension jig (300).

[0191] Accordingly, since the first rotating brush (510) can be positioned inside the tension jig (300), the cleaning part (500) can effectively clean not only the tension roller (322) but also the inner surface of the tension jig (300).

[0192] The second rotating brush (520) may include a second brush shaft (522) and a plurality of second brush bristles (524).

[0193] The second brush shaft (522) may be positioned facing the first surface (F1) of the tension jig (300). The second brush shaft (522) may rotate. The second brush shaft (522) may be formed to extend in a direction parallel to the center axis of the first brush shaft (512) or the tension roller (322).

[0194] A plurality of second brush bristles (524) may be formed to protrude outward from the second brush shaft (522). A plurality of second brush bristles (524) may come into contact with the first surface (F1) depending on the rotation of the second brush shaft (522).

[0195] The third rotating brush (530) may include a third brush shaft (532) and a plurality of third brush bristles (534).

[0196] The third brush shaft (532) may be positioned facing the second surface (F2) of the tension jig (300). The third brush shaft (532) may rotate. The third brush shaft (532) may be formed to extend in a direction parallel to the center axis of the first brush shaft (512) or the tension roller (322).

[0197] A plurality of third brush bristles (534) may be formed to protrude outward from the third brush shaft (532). A plurality of third brush bristles (534) may come into contact with the second surface (F2) depending on the rotation of the third brush shaft (532).

[0198] Accordingly, the cleaning unit (500) can effectively clean not only the tension roller (322) but also the outer surface of the tension roller (322) that faces or contacts the electrode sheet (50).

[0199]

[0200] [Second Embodiment of Electrode Notching Device]

[0201] The electrode notching device (10) according to the second embodiment may include a transfer unit (100), a laser irradiation unit (200), and a tension jig (300). That is, the jig moving unit (400) and the cleaning unit (500) in the electrode notching device (10) according to the first embodiment described above may be omitted.

[0202] The transfer unit (100) can transfer the electrode sheet (50).

[0203] The laser irradiation unit (200) can irradiate a laser to the notching area (R) through which the electrode sheet (50) passes.

[0204] The tension jig (300) may include first and second tension parts (310, 320).

[0205] The first and second tension sections (310, 320) may be located upstream and downstream of the notching area (R), respectively, in the conveying direction of the electrode sheet (50). The first and second tension sections (310, 320) may be located adjacent to the notching area (R).

[0206] The first or second tension member (310, 320) may include a cantilever (312). The cantilever (312) may be formed to extend toward the second tension member (320) or the first tension member (310). For example, as shown in the drawing, the first tension member (310) may include a cantilever (312) that extends toward the second tension member (320). The cantilever (312) may apply tension to the electrode sheet (50) in contact with the electrode sheet (50) within the notching area (R).

[0207] The second tensioning section (320) or the first tensioning section (310) may include a tension roller (322). For example, as shown in the drawing, the second tensioning section (320) may include a tension roller (322). The tension roller (322) may be rotatably installed. The tension roller (322) may apply tension to the electrode sheet (50) within the notching area (R) by contacting the electrode sheet (50).

[0208] Accordingly, since the tension roller (322) is provided on the tension jig (300), the installation, replacement, and maintenance of the tension roller (322) can be easily facilitated. In addition, since the tension roller (322) is provided on the tension jig (300), the pattern jig of the conventional electrode notching device (10) can be replaced with the tension jig (300) of the present invention. Accordingly, since most of the components of the conventional electrode notching device (10) (e.g., all components other than the conventional pattern jig) can be used as is, the electrode notching device (10) of the present invention can be easily implemented at a low cost.

[0209] In addition, since tension is applied to the electrode sheet (50) within the notching area (R) by a rotating tension roller (322), foreign matter that adheres or is attached to the tension jig (300) can be reduced. Accordingly, notching defects, contamination of the electrode sheet (50), and secondary battery defects caused therefrom (e.g., low voltage defects) can be reduced or prevented.

[0210] Additionally, the distance between the two regions where the electrode sheet (50) comes into contact with the first tension part (310) (e.g., cantilever (312)) and the second tension part (320) (e.g., tension roller (322)) can be reduced. Accordingly, even if the first or second tension part (310, 320) includes the tension roller (322), the tension jig (300) can effectively apply tension to the electrode sheet (50) within the notching region (R), thereby preventing notching defects.

[0211] In contrast, if both the first and second tension sections (310, 320) include a tension roller (322), the distance may increase by the radius of the tension roller (322). Consequently, insufficient tension may be applied to the electrode sheet (50) within the notching area (R), which may result in a notching defect.

[0212] Meanwhile, matters not mentioned in relation to the electrode notching device (10) according to the second embodiment can be inferred from the electrode notching device (10) according to the first embodiment described above.

[0213]

[0214] [Third Embodiment of Electrode Notching Device]

[0215] The electrode notching device (10) according to the third embodiment may include a transfer unit (100), a laser irradiation unit (200), a tension jig (300), and a cleaning unit (500). That is, the jig moving unit (400) in the electrode notching device (10) according to the first embodiment described above may be omitted.

[0216] The laser irradiation unit (200) can irradiate a laser to the notching area (R) through which the electrode sheet (50) passes.

[0217] The tension jig (300) may include a tension roller (322). The tension roller (322) may be rotatably installed. The tension roller (322) may apply tension to the electrode sheet (50) within the notching area (R) by contacting the electrode sheet (50).

[0218] The cleaning unit (500) may include one or more first rotary brushes (510).

[0219] Each first rotating brush (510) may include a first brush shaft (512) and a plurality of first brush bristles (514).

[0220] The first brush shaft (512) can be formed to extend in a direction parallel to the center axis of the tension roller (322). The first brush shaft (512) can rotate.

[0221] A plurality of first brush bristles (514) may be formed to protrude outward from the first brush shaft (512). A plurality of first brush bristles (514) may come into contact with the tension roller (322) as the first brush shaft (512) rotates.

[0222] Accordingly, since the tension roller (322) is provided on the tension jig (300), the installation, replacement, and maintenance of the tension roller (322) can be easily facilitated. In addition, since the tension roller (322) is provided on the tension jig (300), the pattern jig of the conventional electrode notching device (10) can be replaced with the tension jig (300) of the present invention. Accordingly, since most of the components of the conventional electrode notching device (10) (e.g., all components other than the conventional pattern jig) can be used as is, the electrode notching device (10) of the present invention can be easily implemented at a low cost.

[0223] In addition, since tension is applied to the electrode sheet (50) within the notching area (R) by a rotating tension roller (322), foreign matter that adheres or is attached to the tension jig (300) can be reduced. Accordingly, notching defects, contamination of the electrode sheet (50), and secondary battery defects caused therefrom (e.g., low voltage defects) can be reduced or prevented.

[0224] In addition, since the rotating first rotating brush (510) cleans the tension roller (322) and the rotation axis (center axis) of the tension roller (322) and the first rotating brush (510) are parallel to each other, the cleaning unit (500) can effectively clean the tension roller (322). If the brush does not rotate, the tension roller (322) may be incompletely cleaned. This may be because the brush can clean while rotating the tension roller (322).

[0225] Meanwhile, matters not mentioned in relation to the electrode notching device (10) according to the third embodiment can be inferred from the electrode notching device (10) according to the first embodiment described above.

[0226]

[0227] The embodiments described above should be understood as exemplary in all respects and not limiting, and the scope of the invention will be defined by the claims set forth below rather than by the detailed description above. Furthermore, the meaning and scope of the claims set forth below, as well as all modifications and variations derived from equivalents thereof, should be interpreted as being included within the scope of the invention.

[0228] Although the present invention has been described above with reference to the illustrated drawings, the present invention is not limited by the embodiments and drawings disclosed in this specification, and it is obvious that various modifications can be made by a person skilled in the art within the scope of the technical concept of the present invention. Furthermore, even if the effects of the configuration according to the present invention were not explicitly described while describing the embodiments of the present invention above, it is natural to acknowledge that the effects predictable by said configuration should also be recognized.

Claims

1. A transfer unit (100) for transferring an electrode sheet (50); A laser irradiation unit (200) that irradiates a laser into a notching area (R) through which the electrode sheet (50) passes; A tension jig (300) movable to a first position (P1) adjacent to the above notching area (R) and a second position (P2) spaced apart from the first position (P1); A jig moving unit (400) for moving the tension jig (300) to the first position (P1) and the second position (P2); and It includes a cleaning unit (500) for cleaning the tension jig (300) located at the second position (P2), and The above tension jig (300) includes a tension roller (322) that is rotatably installed, and When the tension jig (300) is positioned at the first position (P1), the tension roller (322) contacts the electrode sheet (50) and applies tension to the electrode sheet (50) within the notching area (R). Electrode notching device.

2. In Claim 1, An electrode notching device having a pair of tension jigs (300) each located at the first position (P1) and the second position (P2).

3. In claim 1 or claim 2, The above tension jig (300) includes a first tension part (310) and a second tension part (320), and When the tension jig (300) is positioned at the first position (P1), the first tension part (310) and the second tension part (320) are respectively positioned upstream and downstream of the notching area (R) in the conveying direction of the electrode sheet (50), positioned adjacent to the notching area (R), and in contact with the electrode sheet (50) to apply tension to the electrode sheet (50) within the notching area (R). The first tension part (310) or the second tension part (320) comprises the tension roller (322), forming an electrode notching device.

4. In Claim 3, The above second tension part (320) is an electrode notching device including the tension roller (322).

5. In Claim 4, The electrode notching device, wherein the first tension member (310) includes a cantilever (312) that is extended toward the second tension member (320) and applies tension to the electrode sheet (50) within the notching area (R) by contacting the electrode sheet (50) when the tension jig (300) is positioned at the first position (P1).

6. A transfer unit (100) for transferring an electrode sheet (50); A laser irradiation unit (200) that irradiates a laser into a notching area (R) through which the electrode sheet (50) passes; and The tension jig (300) comprises a first tension part (310) and a second tension part (320) positioned upstream and downstream of the notching area (R), respectively, in the conveying direction of the electrode sheet (50), and positioned adjacent to the notching area (R). The first tension member (310) or the second tension member (320) includes a cantilever (312) that is extended toward the second tension member (320) or the first tension member (310) and is in contact with the electrode sheet (50) to apply tension to the electrode sheet (50) within the notching area (R). The second tension member (320) or the first tension member (310) comprises a tension roller (322) that is rotatably installed and can apply tension to the electrode sheet (50) in contact with the electrode sheet (50) within the notching area (R). Electrode notching device.

7. In claim 3 or claim 6, The above tension jig (300) is: An internal space (330) formed on one side of the first tension part (310) and the second tension part (320) in a first direction parallel to the thickness direction of the electrode sheet (50) in the notching region (R), and communicating with the notching region (R) in the first direction; and An electrode notching device further comprising a body part (340) that is coupled to the first tension part (310) and the second tension part (320) and defines the internal space (330).

8. In Claim 7, The first tension member (310) or second tension member (320) including the tension roller (322) further comprises a roller shaft (324) that is formed to extend in the width direction of the electrode sheet (50) and is rotatably installed or rotates together with the tension roller (322), and a support frame (326) that is coupled to the roller shaft (324) and supports the roller shaft (324). The above support frame (326) is coupled to the other end of the first direction of the body part (340) and extends in a direction intersecting the first direction and the width direction, and faces the internal space (330) in the first direction, forming an electrode notching device.

9. In any one of claims 1 to 8, The above cleaning unit (500) includes one or more first rotary brushes (510), and Each of the above first rotating brushes (510) comprises a first brush shaft (512) that is rotatable and extends in a direction parallel to the central axis of the tension roller (322) of the tension jig (300) located at the second position (P2), and a plurality of first brush bristles (514) that are formed protruding outwardly from the first brush shaft (512) and can come into contact with the tension roller (322) of the tension jig (300) located at the second position (P2) according to the rotation of the first brush shaft (512), forming an electrode notching device.

10. A transfer unit (100) for transferring an electrode sheet (50); A laser irradiation unit (200) that irradiates a laser into a notching area (R) through which the electrode sheet (50) passes; A tension jig (300) comprising a tension roller (322) that is rotatably installed and contacts the electrode sheet (50) to apply tension to the electrode sheet (50) within the notching area (R); and It includes a cleaning unit (500) configured to include one or more first rotary brushes (510), and Each of the above-mentioned first rotary brushes (510) comprises a first brush shaft (512) that is rotatable and extends in a direction parallel to the central axis of the tension roller (322), and a plurality of first brush bristles (514) that are formed protruding outwardly from the first brush shaft (512) and can come into contact with the tension roller (322) according to the rotation of the first brush shaft (512). Electrode notching device.

11. In claim 9 or claim 10, A pair of the above-mentioned first rotary brushes (510) are provided, The above pair of first rotating brushes (510) can be positioned on both sides of the tension roller (322) with the tension roller (322) in between, forming an electrode notching device.

12. In Claim 11, The above pair of first rotating brushes (510) are electrode notching devices that rotate in opposite directions to each other.

13. In any one of claims 9 to 12, The above tension jig (300) is: A first tension part (310) and a second tension part (320) are respectively located upstream and downstream of the notching area (R) in the conveying direction of the electrode sheet (50), and can be located adjacent to the notching area (R) and can apply tension to the electrode sheet (50) within the notching area (R) by contacting the electrode sheet (50); An internal space (330) formed on one side of the first tension part (310) and the second tension part (320) in a first direction parallel to the thickness direction of the electrode sheet (50) in the notching region (R), and communicating with the notching region (R) in the first direction; and It includes a body part (340) that is combined with the first tension part (310) and the second tension part (320) and defines the internal space (330), and The first tension part (310) or the second tension part (320) includes the tension roller (322), and An electrode notching device in which at least one of the above one or more first rotating brushes (510) can be located inside the internal space (330).

14. In any one of claims 9 to 13, The tension jig (300) includes a first surface (F1) and a second surface (F2) that can be positioned upstream and downstream of the tension roller (322), respectively, in the conveying direction of the electrode sheet (50) and can come into contact with or face adjacent to the electrode sheet (50). The above cleaning unit (500) is: A second rotating brush (520) comprising a second brush shaft (522) that can be positioned facing the first surface (F1) and is rotatable, and a plurality of second brush bristles (524) that are formed protruding outwardly from the second brush shaft (522) and can come into contact with the first surface (F1) according to the rotation of the second brush shaft (522); and An electrode notching device further comprising a third rotating brush (530) configured to include a third brush shaft (532) that can be positioned facing the second surface (F2) and is rotatable, and a plurality of third brush bristles (534) that are formed protruding outwardly from the third brush shaft (532) and can come into contact with the second surface (F2) according to the rotation of the third brush shaft (532).

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