Method and apparatus for manufacturing electrode

Abstract

The present invention provides an electrode manufacturing apparatus (10) comprising: a transfer unit (100) for transferring, in the longitudinal direction, an electrode sheet (50) comprising a first sheet portion (52) and a second sheet portion (54), which are respectively located at a first side and a second side in the width direction and extend in the longitudinal direction; a laser irradiation unit (200) which irradiates, with laser, a first point (N1) of the first sheet portion (52) transferred by the transfer unit (100); a first jig (300) which is arranged to face the first point (N1) in the thickness direction or arranged adjacent to the first point (N1) and is in contact with the first sheet portion (52) in the thickness direction; a second jig (400) which is arranged at the second side of the first jig (300) and the first point (N1) in the width direction, is arranged to face the first jig (300) in the width direction, and is in contact with the second sheet portion (54) in the thickness direction; and a cleaning unit (500) for cleaning an edge portion (410) of the second jig (400), wherein the cleaning unit (500) may be adjacent to the first point (N1) and adjacent to or in contact with the electrode sheet (50). The edge portion (410) may include a portion of a first side (402) of the second jig (400) facing the first jig (300) in the width direction.

Description

Electrode manufacturing apparatus and method

[0001] This application claims the benefit of priority based on Korean Patent Application No. 10-2024-0160413 filed November 12, 2024, 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 manufacturing apparatus and an electrode manufacturing method that effectively prevent foreign matter from accumulating or adhering to a jig.

[0003] The electrode of a secondary battery is manufactured by forming an electrode tab on the uncoated portion of an electrode sheet, where the electrode active material is not coated, using a notching device, and then cutting the electrode sheet to a predetermined length.

[0004] When forming electrode tabs using a laser notching device, foreign substances such as fumes generated during notching accumulate or adhere around the jig supporting the electrode sheet, causing problems such as notching defects, damage to the electrode sheet, and contamination. Therefore, the jig must be cleaned periodically to remove foreign substances.

[0005] Here, the jig can be divided into a first jig and a second jig. The first jig can support a non-notching portion where notching is performed, and the second jig can support a retaining portion where electrode active material is applied and not notching is performed. Conventionally, only the first jig, where foreign matter easily accumulates or adheres, was cleaned. However, since foreign matter accumulates or adheres to the second jig as well, a method to effectively clean the second jig is required.

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

[0007] The present invention was devised to solve the aforementioned problems, and aims to provide an electrode manufacturing apparatus and an electrode manufacturing method that effectively prevent foreign matter from accumulating or adhering to the second jig, in an electrode manufacturing apparatus in which a jig is separated into a first jig and a second jig so that a part of the jig (a first jig) used to support an electrode sheet during laser processing of the electrode sheet can be easily cleaned or replaced.

[0008] In addition, the present invention aims to provide an electrode manufacturing apparatus and an electrode manufacturing method that prevent or reduce laser processing defects, damage to the electrode sheet, contamination, and low voltage defects of the battery cell caused by foreign matter accumulated or stuck to the second jig.

[0009] In addition, the present invention aims to provide an electrode manufacturing apparatus and an electrode manufacturing method that effectively and stably clean a second jig used in laser processing with a simple configuration during the laser processing process (i.e., without needing to stop the laser processing process).

[0010] In addition, the present invention aims to provide an electrode manufacturing apparatus and an electrode manufacturing method that reduce electrode manufacturing costs and maintenance costs of the electrode manufacturing apparatus and improve electrode productivity.

[0011] In addition, the present invention aims to provide an electrode manufacturing apparatus and an electrode manufacturing method in which the cleaning unit of the second jig can be miniaturized and easily maintained.

[0012] In addition, the present invention aims to provide an electrode manufacturing apparatus and an electrode manufacturing method in which the installation, removal, and movement of the cleaning unit of the second jig are easily and stably performed.

[0013] In addition, the present invention aims to provide an electrode manufacturing apparatus and an electrode manufacturing method that effectively remove foreign matter and prevent scattering of foreign matter.

[0014] 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.

[0015] To solve the above-mentioned problem, the present invention provides an electrode manufacturing device (10) comprising a transfer unit (100), a laser irradiation unit (200), a first jig (300), a second jig (400), and a cleaning unit (500).

[0016] The above transfer unit (100) can transfer the electrode sheet (50) in the longitudinal direction.

[0017] The electrode sheet (50) may include a first sheet portion (52) and a second sheet portion (54).

[0018] The first sheet portion (52) and the second sheet portion (54) can be positioned on the first side and the second side, respectively, in the width direction.

[0019] The first sheet portion (52) and the second sheet portion (54) can be extended in the longitudinal direction.

[0020] The laser irradiation unit (200) can irradiate a laser at a first point (N1) of the first sheet unit (52) that is transported by the transport unit (100).

[0021] The first jig (300) may be positioned facing the first point (N1) in the thickness direction or positioned adjacent to the first point (N1).

[0022] The first jig (300) can come into contact with the first sheet portion (52) in the thickness direction.

[0023] The second jig (400) can be positioned on the second side of the first jig (300) and the first point (N1) in the width direction.

[0024] The second jig (400) can be positioned facing the first jig (300) in the width direction.

[0025] The second jig (400) can come into contact with the second sheet portion (54) in the thickness direction.

[0026] The cleaning unit (500) above may be adjacent to the first point (N1).

[0027] The cleaning unit (500) can clean the edge portion (410) of the second jig (400).

[0028] The edge portion (410) may be adjacent to or in contact with the electrode sheet (50).

[0029] The edge portion (410) may include a part of the first side (402) of the second jig (400) facing the first jig (300) in the width direction.

[0030] In one embodiment, the edge portion (410) may include a first end portion region (412).

[0031] The first end region (412) may be located on the first side (402).

[0032] The first end region (412) may be located at the end of the first side (402) that is in contact with or adjacent to the electrode sheet (50) in the thickness direction.

[0033] In one embodiment, the second jig (400) may include a first portion (405) of the outer surface (404).

[0034] The first portion (405) of the outer surface (404) may come into contact with or be adjacent to the electrode sheet (50) in the thickness direction.

[0035] The above edge portion (410) may include a second end portion region (414).

[0036] The second end region (414) above may be located at the first part (405).

[0037] The second end area (414) may be located at the end of the first part (405) adjacent to the first jig (300) in the width direction.

[0038] In one embodiment, the second jig (400) may be a roller that rotates when the electrode sheet (50) is transported.

[0039] As the second jig (400) rotates, the edge portion (410) can be cleaned by the cleaning unit (500).

[0040] In one embodiment, the edge portion (410) may include a first ring area (416).

[0041] The first ring area (416) may be located on the first side (402).

[0042] The first ring region (416) may form the outer end of the first side (402) in the radial direction.

[0043] The first ring area (416) above may be ring-shaped.

[0044] In one embodiment, the second jig (400) may include an outer surface (404).

[0045] The outer surface (404) may come into contact with or adjacent to the electrode sheet (50) in the thickness direction according to the rotation of the second jig (400).

[0046] The outer surface (404) above may be cylindrical.

[0047] The above edge portion (410) may include a second ring area (418).

[0048] The second ring region (418) may be located on the outer surface (404).

[0049] The second ring region (418) may form the end of the first side of the outer surface (404) in the width direction.

[0050] The second ring area (418) above may be ring-shaped.

[0051] In one embodiment, the cleaning unit (500) may include a brush portion (510) that contacts the edge portion (410).

[0052] In one embodiment, the edge portion (410) may include a first ring area (416).

[0053] The first ring area (416) may be located on the first side (402).

[0054] The first ring region (416) may form the outer end of the first side (402) in the radial direction.

[0055] The first ring area (416) above may be ring-shaped.

[0056] The brush part (510) may include a first brush part (512).

[0057] The first brush portion (512) may be positioned facing the first ring area (416) in the width direction.

[0058] The first brush portion (512) can come into contact with the first ring area (416).

[0059] In one embodiment, the second jig (400) may include an outer surface (404).

[0060] The outer surface (404) may come into contact with or adjacent to the electrode sheet (50) in the thickness direction according to the rotation of the second jig (400).

[0061] The outer surface (404) above may be cylindrical.

[0062] The above edge portion (410) may include a second ring area (418).

[0063] The second ring region (418) may be located on the outer surface (404).

[0064] The second ring region (418) may form the end of the first side of the outer surface (404) in the width direction.

[0065] The second ring area (418) above may be ring-shaped.

[0066] The brush part (510) may include a second brush part (514).

[0067] The second brush portion (514) may be positioned facing the second ring area (418) in a radial direction.

[0068] The second brush part (514) can come into contact with the second ring area (418).

[0069] In one embodiment, the second jig (400) may include an outer surface (404).

[0070] The outer surface (404) may come into contact with or adjacent to the electrode sheet (50) in the thickness direction according to the rotation of the second jig (400).

[0071] The outer surface (404) above may be cylindrical.

[0072] The above edge portion (410) may include a second ring area (418).

[0073] The second ring region (418) may be located on the outer surface (404).

[0074] The second ring region (418) may form the end of the first side of the outer surface (404) in the width direction.

[0075] The second ring area (418) above may be ring-shaped.

[0076] The brush part (510) may include a second brush part (514).

[0077] The second brush portion (514) may be positioned facing the second ring area (418) in a radial direction.

[0078] The second brush part (514) can come into contact with the second ring area (418).

[0079] The first brush part (512) and the second brush part (514) can be combined.

[0080] In one embodiment, when projected onto a virtual plane parallel to the virtual rotation axis (A) of the second jig (400) and passing through the virtual rotation axis (A) and the second brush part (514), the brush part (510) can form an L-shape.

[0081] In one embodiment, when projected onto a virtual plane perpendicular to the virtual axis of rotation (A), the first brush part (512) may be formed to extend obliquely in a direction that forms an angle difference of less than 90 degrees with the extension direction of the first straight line (L1) connecting the midpoint of the first end part (E1) of the first brush part (512) combined with the second brush part (514) and the virtual axis of rotation (A).

[0082] In one embodiment, the brush portion (510) may be movable in the width direction.

[0083] The brush portion (510) can move in the width direction and come into contact with the edge portion (410).

[0084] In one embodiment, the first jig (300) may be movable in the thickness direction.

[0085] In one embodiment, the first jig (300) may include a through hole (310).

[0086] The above through hole (310) can penetrate the first jig (300) in the width direction.

[0087] The brush portion (510) may be able to enter or penetrate the through hole (310) in the width direction, or withdraw from the through hole (310).

[0088] In one embodiment, the through hole (310) may face the edge portion (410) of the second jig (400) in the width direction.

[0089] In one embodiment, the cleaning unit (500) may include a second moving part (550).

[0090] The second moving part (550) can be combined with the brush part (510).

[0091] The second moving part (550) can move the brush part (510) in the width direction.

[0092] In one embodiment, the cleaning unit (500) may include a suction pipe (560).

[0093] The suction tube (560) may be positioned adjacent to the edge portion (410) or the brush portion (510).

[0094] The above suction tube (560) can suck up foreign matter.

[0095] In one embodiment, the second jig (400) may include a first portion (400a) on one side and a second portion (400b) on the other side in the thickness direction.

[0096] The first part (400a) above can be in contact with the second sheet part (54).

[0097] The brush portion (510) can come into contact with the edge portion (410) at the bottom of the second portion (400b).

[0098] The suction tube (560) may be positioned below the brush section (510).

[0099] To solve the above-mentioned problem, the present invention provides an electrode manufacturing method (S700) including a laser processing process (S710).

[0100] In the above laser processing process (S710), the laser irradiation unit (200) can irradiate a laser at the first point (N1) of the first sheet portion (52) of the electrode sheet (50) that is transported by the transport unit (100).

[0101] In the above laser processing process (S710), the first jig (300) and the second jig (400), which face each other in the width direction, can respectively come into contact with the first sheet portion (52) and the second sheet portion (54) of the electrode sheet (50).

[0102] In addition, the second jig (400) can rotate when the electrode sheet (50) is transported.

[0103] Additionally, depending on the rotation of the second jig (400), the edge portion (410) of the second jig (400) adjacent to the first point (N1) and adjacent to or in contact with the electrode sheet (50) can be cleaned by the brush portion (510) of the cleaning unit (500).

[0104] In one embodiment, during the laser processing process (S710), the brush portion (510) may be positioned adjacent to or penetrating the first jig (300).

[0105] The above electrode manufacturing method (S700) may further include a jig replacement process (S720).

[0106] In the above jig replacement process (S720), the first jig (300) can be replaced.

[0107] The above jig replacement process (S720) may include a brush part removal process (S722), a first jig replacement process (S724), and a brush part installation process (S726).

[0108] In the above brush part removal process (S722), the brush part (510) can be moved so that the brush part (510) moves away from the first jig (300).

[0109] In the above first jig replacement process (S724), the first jig (300) can be replaced.

[0110] In the above brush part installation process (S726), the brush part (510) can be moved so that it is adjacent to the first jig (300) or penetrates the first jig (300).

[0111] According to embodiments of the present invention, an electrode manufacturing device (10) comprises: a transfer unit (100) for transferring an electrode sheet (50) in the longitudinal direction, the electrode sheet (50) comprising a first sheet portion (52) and a second sheet portion (54) which are respectively located on a first side and a second side in the width direction and extend in the longitudinal direction; a laser irradiation unit (200) for irradiating a laser at a first point (N1) of the first sheet portion (52) transferred by the transfer unit (100); a first jig (300) which is positioned facing the first point (N1) in the thickness direction or positioned adjacent to the first point (N1) and contacts the first sheet portion (52) in the thickness direction; and a second jig (400) which is positioned on the second side of the first jig (300) and the first point (N1) in the width direction, which is positioned facing the first jig (300) in the width direction and contacts the second sheet portion (54) in the thickness direction. It may include a cleaning unit (500) for cleaning an edge portion (410) of the second jig (400) that may be adjacent to the first point (N1) and may be adjacent to or in contact with the electrode sheet (50). The edge portion (410) may include a part of the first side (402) of the second jig (400) facing the first jig (300) in the width direction.

[0112] Accordingly, in an electrode manufacturing device in which a part of a jig (first jig) used to support an electrode sheet (50) during laser processing of the electrode sheet (50) (first jig) is separated into a first jig (300) and a second jig (400) so that the jig can be easily cleaned or replaced, the cleaning unit (500) cleans the second jig (400), so that foreign matter such as fumes generated by laser processing may not accumulate or adhere to the second jig (400). Accordingly, laser processing defects, damage to the electrode sheet (50), contamination, and low voltage defects of the battery cell caused by foreign matter accumulated or adhered to the second jig (400) can be prevented or reduced.

[0113] In particular, since the edge portion (410) of the second jig (400) being cleaned by the cleaning unit (500) can be adjacent to the laser irradiation point (first point, N1), it is possible to effectively prevent foreign matter from accumulating or adhering to the second jig (400). In addition, since the edge portion (410) of the second jig (400) being cleaned by the cleaning unit (500) can be adjacent to or in contact with the electrode sheet (50), damage and contamination of the electrode sheet (50) and laser processing defects can be prevented.

[0114] According to embodiments of the present invention, the edge portion (410) may include a first end portion region (412) located on the first side (402) and located at the end of the first side (402) that is in contact with or adjacent to the electrode sheet (50) in the thickness direction.

[0115] Accordingly, since the edge portion (410) being cleaned by the cleaning unit (500) includes a first end portion area (412) that is adjacent to the laser irradiation point (first point, N1) and in contact with or adjacent to the electrode sheet (50), it is possible to effectively prevent foreign matter from accumulating or adhering to the second jig (400) and to prevent damage and contamination of the electrode sheet (50) and laser processing defects.

[0116] According to embodiments of the present invention, the second jig (400) may include a first portion (405) of an outer surface (404) that is in contact with or adjacent to the electrode sheet (50) in the thickness direction. The edge portion (410) may include a second end portion (414) located at the end of the first portion (405) that is located at the first portion (405) and adjacent to the first jig (300) in the width direction.

[0117] Accordingly, since the edge portion (410) cleaned by the cleaning unit (500) includes a second end portion area (414) adjacent to the laser irradiation point (first point, N1) and in contact with or adjacent to the electrode sheet (50), it is possible to effectively prevent foreign matter from accumulating or adhering to the second jig (400) and to prevent damage and contamination of the electrode sheet (50) and laser processing defects.

[0118] According to embodiments of the present invention, the second jig (400) may be a roller that rotates when the electrode sheet (50) is transported. As the second jig (400) rotates, the edge portion (410) may be cleaned by the cleaning unit (500).

[0119] Accordingly, as the second jig (400) rotates, the amount of foreign matter accumulated or stuck on the second jig (400) can be reduced. In addition, since the cleaning unit (500) cleans the rotating second jig (400), the edge portion (410) of the second jig (400) used for laser processing can be effectively cleaned with a simple configuration during the laser processing process (i.e., without needing to stop the laser processing process). Accordingly, the cost of manufacturing the electrode and the maintenance cost of the electrode manufacturing device (10) can be reduced, and the productivity of the electrode can be improved.

[0120] According to embodiments of the present invention, the edge portion (410) may include a ring-shaped first ring region (416) located on the first side (402) and forming the outer end of the first side (402) in a radial direction.

[0121] Accordingly, the edge portion (410) being cleaned by the cleaning unit (500) includes a first ring area (416) that is adjacent to the laser irradiation point (first point, N1) and comes into contact with or is adjacent to the electrode sheet (50) as the second jig (400) rotates, so that foreign matter can be effectively prevented from accumulating or sticking to the second jig (400) and damage and contamination of the electrode sheet (50) and laser processing defects can be prevented.

[0122] According to embodiments of the present invention, the second jig (400) may include a cylindrical outer surface (404) that comes into contact with or faces adjacent to the electrode sheet (50) in the thickness direction according to the rotation of the second jig (400). The edge portion (410) may include a ring-shaped second ring region (418) located on the outer surface (404) and forming the end of the first side of the outer surface (404) in the width direction.

[0123] Accordingly, since the edge portion (410) being cleaned by the cleaning unit (500) includes a second ring area (418) that is adjacent to the laser irradiation point (first point, N1) and in contact with or adjacent to the electrode sheet (50), it is possible to effectively prevent foreign matter from accumulating or adhering to the second jig (400) and to prevent damage and contamination of the electrode sheet (50) and laser processing defects.

[0124] According to embodiments of the present invention, the cleaning unit (500) may include a brush portion (510) in contact with the edge portion (410).

[0125] Accordingly, the edge portion (410) can be cleaned with a simple configuration.

[0126] According to embodiments of the present invention, the edge portion (410) may include a ring-shaped first ring area (416) located on the first side (402) and forming the outer end of the first side (402) in the radial direction. The brush portion (510) may include a first brush portion (512) positioned facing the first ring area (416) in the width direction and in contact with the first ring area (416).

[0127] Accordingly, the first ring area (416) can be effectively cleaned with a simple configuration.

[0128] According to embodiments of the present invention, the second jig (400) may include a cylindrical outer surface (404) that comes into contact with or faces adjacent to the electrode sheet (50) in the thickness direction according to the rotation of the second jig (400). The edge portion (410) may include a ring-shaped second ring area (418) located on the outer surface (404) and forming the end of the first side of the outer surface (404) in the width direction. The brush portion (510) may include a second brush portion (514) that is positioned facing the second ring area (418) in the radial direction and contacts the second ring area (418).

[0129] Accordingly, the second ring area (418) can be effectively cleaned with a simple configuration.

[0130] According to embodiments of the present invention, the second jig (400) may include a cylindrical outer surface (404) that comes into contact with or faces adjacent to the electrode sheet (50) in the thickness direction according to the rotation of the second jig (400). The edge portion (410) may include a ring-shaped second ring area (418) located on the outer surface (404) and forming the end of the first side of the outer surface (404) in the width direction. The brush portion (510) may include a second brush portion (514) that is positioned facing the second ring area (418) in the radial direction and contacts the second ring area (418). The first brush portion (512) and the second brush portion (514) may be combined.

[0131] Accordingly, the first ring area (416) and the second ring area (418) can be effectively cleaned with a simple configuration. In addition, the brush part (510) can be easily moved and maintained.

[0132] In addition, the brush unit (510) can be miniaturized. Accordingly, the brush unit (510) can be installed even if there is little available space. Furthermore, the brush unit (510) can be installed by making only slight modifications to the conventional electrode manufacturing device. In addition, the brush unit (510) can be easily moved.

[0133] According to embodiments of the present invention, when projected onto a virtual plane parallel to the virtual rotation axis (A) of the second jig (400) and passing through the virtual rotation axis (A) and the second brush part (514), the brush part (510) can form an L-shape.

[0134] Accordingly, the brush unit (510) can be miniaturized. Thus, the brush unit (510) can be installed even if there is little available space. In addition, the brush unit (510) can be installed by making only slight modifications to the conventional electrode manufacturing device. Furthermore, the brush unit (510) can be easily moved.

[0135] According to embodiments of the present invention, when projected onto a virtual plane perpendicular to the virtual axis of rotation (A), the first brush part (512) may be formed to extend obliquely in a direction that forms an angle difference of less than 90 degrees with the extension direction of the first straight line (L1) connecting the midpoint of the first end part (E1) of the first brush part (512) combined with the second brush part (514) and the virtual axis of rotation (A).

[0136] Accordingly, the first ring area (416) can be effectively cleaned.

[0137] According to embodiments of the present invention, the brush portion (510) is movable in the width direction and can come into contact with the edge portion (410) by moving in the width direction.

[0138] Accordingly, since the brush portion (510) can be stably installed to contact the edge portion (410) of the second jig (400), the edge portion (410) of the second jig (400) can be cleaned effectively and stably. In particular, since the first brush portion (512) can be easily and stably installed to face the first ring area (416) in the width direction, the first ring area (416) can be cleaned effectively and stably.

[0139] According to embodiments of the present invention, the first jig (300) may be movable in the thickness direction.

[0140] Accordingly, since the brush part (510) can move in the width direction (left and right direction) that intersects the movement direction (thickness direction) of the first jig (300), the brush part (510) can be simply and easily installed and removed from the edge part (410) of the second jig (400) adjacent to the first jig (300), and the travel distance of the brush part (510) for installation and removal can be reduced. Accordingly, the cleaning unit (500) can be miniaturized.

[0141] According to embodiments of the present invention, the first jig (300) may include a through hole (310) that penetrates the first jig (300) in the width direction. The brush portion (510) may be able to enter or penetrate the through hole (310) in the width direction, or withdraw from the through hole (310).

[0142] Accordingly, the brush portion (510) can be installed so as to come into contact with the edge portion (410) of the second jig (400) through the first jig (300). Accordingly, since the brush portion (510) can be stably installed so as to come into contact with the edge portion (410) of the second jig (400) adjacent to the first jig (300), the edge portion (410) of the second jig (400) can be cleaned effectively and stably.

[0143] According to embodiments of the present invention, the through hole (310) may face the edge portion (410) of the second jig (400) in the width direction.

[0144] Accordingly, even if the first jig (300) faces the edge portion (410) of the second jig (400) in the width direction, the brush portion (510) can be installed to contact the edge portion (410) of the second jig (400) in the width direction. Accordingly, the edge portion (410) of the second jig (400), particularly the first ring area (416), can be cleaned effectively and stably.

[0145] According to embodiments of the present invention, the cleaning unit (500) may include a second moving part (550) that is coupled to the brush part (510) and moves the brush part (510) in the width direction.

[0146] Accordingly, the installation and removal of the brush part (510) can be performed easily and stably.

[0147] According to embodiments of the present invention, the cleaning unit (500) may include a suction pipe (560) that is positioned adjacent to the edge portion (410) or brush portion (510) and sucks up foreign matter.

[0148] Accordingly, foreign matter can be effectively removed. In addition, scattering of foreign matter can be prevented.

[0149] According to embodiments of the present invention, the second jig (400) may include a first portion (400a) on one side and a second portion (400b) on the other side in the thickness direction. The first portion (400a) may be in contact with the second sheet portion (54). The brush portion (510) may be in contact with the edge portion (410) at the bottom of the second portion (400b). The suction pipe (560) may be positioned below the brush portion (510).

[0150] Accordingly, since the brush portion (510) contacts the edge portion (410) of the second portion (400b) far from the electrode sheet (50), contamination of the electrode sheet (50) by foreign matter separated from the edge portion (410) can be prevented. In addition, since the brush portion (510) contacts the edge portion (410) of the lower part of the second portion (400b) and the suction pipe (560) is positioned below it, foreign matter separated from the edge portion (410) can be effectively introduced into the suction pipe (560).

[0151] According to embodiments of the present invention, the electrode manufacturing method (S700) may include a laser processing process (S710) in which the laser irradiation unit (200) irradiates a laser at the first point (N1) of the first sheet portion (52) of the electrode sheet (50) that is transported by the transport unit (100). In the above laser processing process (S710), the first jig (300) and the second jig (400), which face each other in the width direction, respectively come into contact with the first sheet portion (52) and the second sheet portion (54) of the electrode sheet (50), and when the electrode sheet (50) is transported, the second jig (400) rotates, and according to the rotation of the second jig (400), the edge portion (410) of the second jig (400) that is adjacent to the first point (N1) and adjacent to or in contact with the electrode sheet (50) can be cleaned by the brush portion (510) of the cleaning unit (500).

[0152] Accordingly, in an electrode manufacturing device in which a part of a jig (first jig) used to support an electrode sheet (50) during laser processing of the electrode sheet (50) (first jig) is separated into a first jig (300) and a second jig (400) so that the jig can be easily cleaned or replaced, the cleaning unit (500) cleans the second jig (400), so that foreign matter such as fumes generated by laser processing may not accumulate or adhere to the second jig (400). Accordingly, laser processing defects, damage to the electrode sheet (50), contamination, and low voltage defects of the battery cell caused by foreign matter accumulated or adhered to the second jig (400) can be prevented or reduced.

[0153] In particular, since the edge portion (410) of the second jig (400) being cleaned by the cleaning unit (500) is adjacent to the laser irradiation point (first point, N1) as the second jig (400) rotates, it is possible to effectively prevent foreign matter from accumulating or adhering to the second jig (400). In addition, since the edge portion (410) of the second jig (400) being cleaned by the cleaning unit (500) is adjacent to or in contact with the electrode sheet (50) as the second jig (400) rotates, damage and contamination of the electrode sheet (50) and laser processing defects can be prevented.

[0154] In addition, the edge portion (410) of the second jig (400) used for laser processing can be simply and effectively cleaned with the brush portion (510) during the laser processing process (i.e., without needing to stop the laser processing process). Accordingly, the cost of manufacturing the electrode and the maintenance cost of the electrode manufacturing device (10) can be reduced, and the productivity of the electrode can be improved.

[0155] According to embodiments of the present invention, in the laser processing process (S710), the brush portion (510) may be positioned adjacent to or penetrating the first jig (300). The electrode manufacturing method (S700) may further include a jig replacement process (S720) for replacing the first jig (300). The jig replacement process (S720) may include a brush portion removal process (S722) for moving the brush portion (510) away from the first jig (300), a first jig replacement process (S724) for replacing the first jig (300), and a brush portion installation process (S726) for moving the brush portion (510) adjacent to or penetrating the first jig (300).

[0156] Accordingly, even if the brush part (510) for cleaning the second jig (400) is positioned adjacent to the first jig (300) or through the first jig (300), the first jig (300) can be replaced without interfering with the brush part (510).

[0157] 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.

[0158] FIGS. 1 to 3 are perspective and side views schematically illustrating an electrode manufacturing apparatus according to one embodiment of the present invention.

[0159] FIG. 4 is a perspective view showing the second jig of FIG. 1 to FIG. 3.

[0160] FIGS. 5 and FIGS. 6 are perspective views showing the brush part and the second moving part of the cleaning unit of FIGS. 1 to 3.

[0161] FIGS. 7 and FIGS. 8 are a perspective view and a side view showing the second jig of FIGS. 1 to 4 and the cleaning unit of FIGS. 1 to 3, FIGS. 5 and FIGS. 6 together.

[0162] FIG. 9 is a state diagram showing the state in which the brush part and the second moving part have moved in FIG. 1.

[0163] FIG. 10 is a state diagram showing the state in which the first jig and the first moving part have moved in FIG. 9.

[0164] FIG. 11 is a state diagram showing the state in which the first jig and the first moving part are rotated in FIG. 10.

[0165] FIG. 12 is a flowchart of an electrode manufacturing method according to one embodiment of the present invention.

[0166] [Explanation of the symbol]

[0167] 10: Electrode manufacturing device

[0168] 50: Electrode sheet

[0169] 52: 1st sheet section 54: 2nd sheet section

[0170] 100: Transfer section

[0171] 200: Laser Irradiation Unit N1: Point 1

[0172] 300: 1st Jig 310: Through hole

[0173] 350: 1st Mobile Unit

[0174] P1: 1st position P2: 2nd position

[0175] 400: 2nd Jig A: Virtual rotation axis

[0176] 400a: Part 1 400b: Part 2

[0177] 402: First side 404: Outer surface

[0178] 405: Part 1

[0179] 410: Edge part

[0180] 412: 1st end area 414: 2nd end area

[0181] 416: 1st ring area 418: 2nd ring area

[0182] 500: Cleaning unit

[0183] 510: Brush section

[0184] 512: 1st Brush Section 514: 2nd Brush Section

[0185] E1: 1st end L1: 1st straight line

[0186] 550: 2nd moving part 560: Suction pipe

[0187] 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.

[0188] 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.

[0189] Throughout the specification, unless specifically stated otherwise, each component may be singular or plural.

[0190] 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.

[0191] 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.

[0192] 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.

[0193] FIGS. 1 to 3 are schematic perspective and side views of an electrode manufacturing apparatus according to an embodiment of the present invention. FIG. 4 is a perspective view showing the second jig of FIGS. 1 to 3. FIGS. 5 and 6 are perspective views showing the brush portion and the second moving portion of the cleaning unit of FIGS. 1 to 3. FIGS. 7 and 8 are perspective and side views showing the second jig of FIGS. 1 to 4 and the cleaning unit of FIGS. 1 to 3, FIGS. 5, and 6 together. FIG. 9 is a state diagram showing the state in which the brush portion and the second moving portion have moved in FIG. 1. FIG. 10 is a state diagram showing the state in which the first jig and the first moving portion have moved in FIG. 9. FIG. 11 is a state diagram showing the state in which the first jig and the first moving portion have rotated in FIG. 10. FIG. 12 is a flowchart of an electrode manufacturing method according to an embodiment of the present invention.

[0194] [Electrode manufacturing device]

[0195] Referring to FIGS. 1 to 3, an electrode manufacturing device (10) according to one embodiment may include a transfer unit (100), a laser irradiation unit (200), a first jig (300), a second jig (400), and a cleaning unit (500). The electrode manufacturing device (10) may include a first moving unit (350).

[0196] The transfer unit (100) can transfer the electrode sheet (50) in the longitudinal direction. Here, the longitudinal direction may be the longitudinal direction of the electrode sheet (50) (e.g., the up-down direction).

[0197] Here, the electrode sheet (50) may include a first sheet portion (52) and a second sheet portion (54) that extend in the longitudinal direction. The first sheet portion (52) and the second sheet portion (54) may be located on the first side and the second side, respectively, in the width direction. Here, the width direction may be the width direction of the electrode sheet (50) (e.g., left-right direction). The first sheet portion (52) may be an uncoated portion where no active material is coated on the electrode current collector. The second sheet portion (54) may be a retaining portion where an active material is coated on the electrode current collector.

[0198] The laser irradiation unit (200) can irradiate a laser at a first point (N1) of the first sheet unit (52) that is transported by the transport unit (100). The laser irradiation unit (100) can process (e.g., notching) the electrode sheet (50) by irradiating a laser. For example, the laser irradiation unit (100) can form a pattern (e.g., a tab) on the first sheet unit (52).

[0199] [1st Jig, 1st Moving Part]

[0200] The first jig (300) may be positioned to face the laser irradiation unit (200) with the first sheet portion (52) in between. The first jig (300) may be positioned to face the first point (N1) in the thickness direction or to be positioned adjacent to the first point (N1). The first jig (300) may come into contact with the first sheet portion (52) in the thickness direction. Here, the thickness direction may be the thickness direction of the electrode sheet (50) (e.g., front-back direction). For example, the first jig (300) may be adjacent to the first point (N1) or come into contact with a portion of the first sheet portion (52) that includes the first point (N1). The first jig (300) may generate tension in the first sheet portion (52).

[0201] Since the first jig (300) can be positioned closer to the first point (N1) than the second jig (400), foreign matter may accumulate or adhere more easily to the first jig (300) than to the second jig (400). Accordingly, the first jig (300) may need to be periodically cleaned or replaced. For example, the first jig (300) located at the first position (P1) may be rotated to the second position (P2) and cleaned by a separate cleaning device (not shown), after which it may be rotated back to the first position (P1) (Fig. 11). The specific details of the cleaning device for cleaning the first jig (300) follow the prior art.

[0202] The first jig (300) can be moved in the thickness direction (e.g., forward and backward direction) by, for example, the first moving part (350) (Fig. 10). Accordingly, the tension applied by the first jig (300) to the first sheet part (52) can be adjusted, and the first jig (300) can be rotated without interfering with the first sheet part (52). For example, the first jig (300) located at the first position (P1) or the second position (P2) can be rotated to the second position (P2) or the first position (P1) by the first moving part (350) without interfering with the first sheet part (52) (Fig. 11).

[0203] Meanwhile, the first jig (300) may include a through hole (310) (Figs. 3, Fig. 10). The through hole (310) may penetrate the first jig (300) in the width direction. The through hole (310) may face the edge portion (410) of the second jig (400) in the width direction (Figs. 3, Fig. 9).

[0204] The first moving part (350) can be coupled with the first jig (300). The first moving part (350) can be coupled with a plurality of first jigs (300). The first moving part (350) can move each first jig (300) in the thickness direction (e.g., front and back direction). For example, each first jig (300) can be moved in the thickness direction by moving the first moving part (350) in the thickness direction (Fig. 10).

[0205] The first moving part (350) can rotate each first jig (300). For example, the first moving part (350) can rotate each first jig (300) by rotating. The first moving part (350) can rotate the first jig (300) located at the first position (P1) to the second position (P2) and rotate the first jig (300) located at the second position (P2) to the first position (P1) (Fig. 11). Here, the first position (P1) and the second position (P2) may be relative positions based on the position of the first moving part (350).

[0206] [2nd Jig]

[0207] The second jig (400) may be positioned on the second side of the first jig (300) and the first point (N1) in the width direction. The second jig (400) may be positioned facing the first jig (300) in the width direction. The second jig (400) may come into contact with the second sheet portion (54) in the thickness direction. For example, the second jig (400) may overlap with the first point (N1) in the length direction or come into contact with a portion of the second sheet portion (54) adjacent to the first point (N1). The second jig (300) may generate tension in the second sheet portion (54).

[0208] Referring further to FIG. 4, the second jig (400) may be a roller that rotates when the electrode sheet (50) is transported. In this case, the extension direction of the virtual rotation axis (A) of the second jig (400) may correspond to the width direction. However, this configuration is not limited to this. That is, the second jig (400) may not be a roller.

[0209] The second jig (400) may include a first side (402). The second jig (400) may include an outer surface (404). The second jig (400) may include a first portion (405). The second jig (400) may include an edge portion (410).

[0210] The first side (402) may face the first jig (300) in the width direction. If the second jig (400) is a roller, the first side (402) may be circular or ring-shaped.

[0211] The outer surface (404) may face the electrode sheet (50). When the second jig (400) is a roller, the outer surface (404) may face the electrode sheet (50) in contact with or adjacent to it in the thickness direction depending on the rotation of the second jig (400). Additionally, the outer surface (404) may be cylindrical.

[0212] The first portion (405) may be located on the outer surface (404). The first portion (405) may be in contact with or adjacent to the electrode sheet (50) in the thickness direction.

[0213] The edge portion (410) may be adjacent to the first point (N1). The edge portion (410) may be adjacent to or in contact with the electrode sheet (50) (Figs. 1 to 3).

[0214] The edge portion (410) may include a first end portion area (412) and / or a second end portion area (414). If the second jig (400) is a roller, the edge portion (410) may include a first ring portion (416) and / or a second ring portion (418).

[0215] The first end region (412) may be located on the first side (402). The first end region (412) may be located on the end (e.g., front end) of the first side (402) that is in contact with or adjacent to the electrode sheet (50) in the thickness direction (Figs. 3, 4).

[0216] The second end area (414) may be located at the first part (405). The second end area (414) may be located at the end (e.g., the right end) of the first part (405) adjacent to the first jig (300) in the width direction (Figs. 3, 4).

[0217] The first ring region (416) may be located on the first side (402). The first ring region (416) may form the outer end of the first side (402) in a radial direction. Here, the radial direction may be a direction approaching or moving away from the rotation axis (A) along any straight line passing through the rotation axis (A) in a virtual plane perpendicular to the rotation axis (A) of the second jig (400). The first ring region (416) may be ring-shaped.

[0218] The first ring area (416) can be a collection of first end areas (412) that change according to the rotation of the second jig (400). That is, the first ring area (416) can include all of the first end areas (412) that change according to the rotation of the second jig (400).

[0219] The second ring region (418) may be located on the outer surface (404). The second ring region (418) may form the end of the first side (e.g., right side) of the outer surface (404) in the width direction. The second ring region (418) may be ring-shaped.

[0220] The second ring area (418) can be a collection of the second end area (414) that changes according to the rotation of the second jig (400). That is, the second ring area (418) can include all of the second end area (414) that changes according to the rotation of the second jig (400).

[0221] Meanwhile, the second jig (400) may include a first part (400a) on one side and a second part (400b) on the other side in the thickness direction (Fig. 8). The first part (400a) may come into contact with the second sheet part (54). The first part (400a) may face the second sheet part (54). This will be described later.

[0222] [Cleaning Unit]

[0223] The cleaning unit (500) can clean the aforementioned edge portion (410) of the second jig (400).

[0224] Accordingly, in an electrode manufacturing device in which a part of a jig (first jig) used to support an electrode sheet (50) during laser processing of the electrode sheet (50) (first jig) is separated into a first jig (300) and a second jig (400) so that the jig can be easily cleaned or replaced, the cleaning unit (500) cleans the second jig (400), so that foreign matter such as fumes generated by laser processing may not accumulate or adhere to the second jig (400). Accordingly, laser processing defects, damage to the electrode sheet (50), contamination, and low voltage defects of the battery cell caused by foreign matter accumulated or adhered to the second jig (400) can be prevented or reduced.

[0225] In particular, since the edge portion (410) of the second jig (400) being cleaned by the cleaning unit (500) can be adjacent to the laser irradiation point (first point, N1), it is possible to effectively prevent foreign matter from accumulating or adhering to the second jig (400). In addition, since the edge portion (410) of the second jig (400) being cleaned by the cleaning unit (500) can be adjacent to or in contact with the electrode sheet (50), damage and contamination of the electrode sheet (50) and laser processing defects can be prevented.

[0226] Here, the edge portion (410) may include a first end portion region (412) as described above.

[0227] Accordingly, since the edge portion (410) being cleaned by the cleaning unit (500) includes a first end portion area (412) that is adjacent to the laser irradiation point (first point, N1) and in contact with or adjacent to the electrode sheet (50), it is possible to effectively prevent foreign matter from accumulating or adhering to the second jig (400) and to prevent damage and contamination of the electrode sheet (50) and laser processing defects.

[0228] Here, the edge portion (410) may include a second end portion region (414) as described above.

[0229] Accordingly, since the edge portion (410) cleaned by the cleaning unit (500) includes a second end portion area (414) adjacent to the laser irradiation point (first point, N1) and in contact with or adjacent to the electrode sheet (50), it is possible to effectively prevent foreign matter from accumulating or adhering to the second jig (400) and to prevent damage and contamination of the electrode sheet (50) and laser processing defects.

[0230] As described above, when the second jig (400) is a roller, the edge portion (410) can be cleaned by the cleaning unit (500) while the second jig (400) rotates.

[0231] Accordingly, as the second jig (400) rotates, the amount of foreign matter accumulated or stuck on the second jig (400) can be reduced. In addition, since the cleaning unit (500) cleans the rotating second jig (400), the edge portion (410) of the second jig (400) used for laser processing can be effectively cleaned with a simple configuration during the laser processing process (i.e., without needing to stop the laser processing process). Accordingly, the cost of manufacturing the electrode and the maintenance cost of the electrode manufacturing device (10) can be reduced, and the productivity of the electrode can be improved.

[0232] Here, the edge portion (410) may include a first ring area (416) as described above.

[0233] Accordingly, the edge portion (410) being cleaned by the cleaning unit (500) includes a first ring area (416) that is adjacent to the laser irradiation point (first point, N1) and comes into contact with or is adjacent to the electrode sheet (50) as the second jig (400) rotates, so that foreign matter can be effectively prevented from accumulating or sticking to the second jig (400) and damage and contamination of the electrode sheet (50) and laser processing defects can be prevented.

[0234] Here, the edge portion (410) may include a second ring area (418) as described above.

[0235] Accordingly, since the edge portion (410) being cleaned by the cleaning unit (500) includes a second ring area (418) that is adjacent to the laser irradiation point (first point, N1) and in contact with or adjacent to the electrode sheet (50), it is possible to effectively prevent foreign matter from accumulating or adhering to the second jig (400) and to prevent damage and contamination of the electrode sheet (50) and laser processing defects.

[0236] Referring further to FIGS. 5 through 8, the cleaning unit (500) may include a brush portion (510). The cleaning unit (500) may further include a second moving portion (550) and / or a suction pipe (560).

[0237] The brush portion (510) can come into contact with the edge portion (410). Accordingly, when the second jig (400), which is a roller, rotates, the brush portion (510) that comes into contact with the edge portion (410) can automatically clean the edge portion (410).

[0238] Accordingly, the edge portion (410) can be cleaned with a simple configuration.

[0239] The brush section (510) may include a first brush section (512) and / or a second brush section (514).

[0240] The first brush portion (512) may be positioned on the first side (e.g., right side) of the first ring area (416) in the width direction. The first brush portion (512) may be positioned facing the first ring area (416) in the width direction. The first brush portion (512) may be in contact with the first ring area (416) (Figs. 7, 8).

[0241] Accordingly, the first ring area (416) can be effectively cleaned with a simple configuration.

[0242] The brush bristles of the first brush part (512) can be extended in a direction parallel to the virtual rotation axis (A) of the second jig (400) or forming an angle difference of less than 90 degrees.

[0243] The second brush portion (514) may be positioned radially outward from the second ring area (418). The second brush portion (514) may be positioned radially facing the second ring area (418). The second brush portion (514) may be in contact with the second ring area (418) (Fig. 7).

[0244] Accordingly, the second ring area (418) can be effectively cleaned with a simple configuration.

[0245] The brush bristles of the second brush section (514) can be formed to extend in an oblique direction parallel to the extension direction of the shortest straight line connecting the center of the second brush section (514) and the virtual rotation axis (A) of the second jig (400), or in an angle difference of less than 90 degrees.

[0246] The first brush section (512) and the second brush section (514) can be combined.

[0247] Accordingly, the first ring area (416) and the second ring area (418) can be effectively cleaned with a simple configuration. In addition, the brush part (510) can be easily moved and maintained.

[0248] In addition, the brush unit (510) can be miniaturized. Accordingly, the brush unit (510) can be installed even if there is little available space. Furthermore, the brush unit (510) can be installed by making only slight modifications to the conventional electrode manufacturing device. In addition, the brush unit (510) can be easily moved.

[0249] When projected onto a virtual plane parallel to the virtual rotation axis (A) of the second jig (400) and passing through the virtual rotation axis (A) and the second brush part (514), the brush part (510) can form an L-shape (Fig. 7). Here, the L-shape may be the shape of the brush part (510) excluding the brush bristles.

[0250] Accordingly, the brush unit (510) can be miniaturized. Thus, the brush unit (510) can be installed even if there is little available space. In addition, the brush unit (510) can be installed by making only slight modifications to the conventional electrode manufacturing device. Furthermore, the brush unit (510) can be easily moved.

[0251] When projected onto a virtual plane perpendicular to the virtual rotation axis (A) of the second jig (400), the first brush part (512) may be formed to extend obliquely in a direction that has an angle difference of less than 90 degrees from the extension direction of the first straight line (L1) (e.g., the direction of the arrow in FIG. 8). Here, the first straight line (L1) may be a straight line connecting the midpoint of the first end (E1) of the first brush part (512) that is coupled with the second brush part (514) in the virtual plane and the virtual rotation axis (A) (Fig. 8).

[0252] Accordingly, the first ring area (416) can be effectively cleaned.

[0253] The brush portion (510) can move in the width direction, for example, by the second moving portion (550). The brush portion (510) can move in the width direction and come into contact with the edge portion (410) (Fig. 9).

[0254] Accordingly, since the brush portion (510) can be stably installed to contact the edge portion (410) of the second jig (400), the edge portion (410) of the second jig (400) can be cleaned effectively and stably. In particular, since the first brush portion (512) can be easily and stably installed to face the first ring area (416) in the width direction, the first ring area (416) can be cleaned effectively and stably.

[0255] At this time, as described above, the first jig (300) can move in the thickness direction (Fig. 10).

[0256] Accordingly, since the brush part (510) can move in the width direction (left and right direction) that intersects the movement direction (thickness direction) of the first jig (300), the brush part (510) can be simply and easily installed and removed from the edge part (410) of the second jig (400) adjacent to the first jig (300), and the travel distance of the brush part (510) for installation and removal can be reduced. Accordingly, the cleaning unit (500) can be miniaturized.

[0257] The brush portion (510) may enter or penetrate the through hole (310) of the first jig (300) described above in the width direction, or withdraw from the through hole (310) (Figs. 1 to 3, Fig. 9).

[0258] Accordingly, the brush portion (510) can be installed so as to come into contact with the edge portion (410) of the second jig (400) through the first jig (300). Accordingly, since the brush portion (510) can be stably installed so as to come into contact with the edge portion (410) of the second jig (400) adjacent to the first jig (300), the edge portion (410) of the second jig (400) can be cleaned effectively and stably.

[0259] At this time, as described above, the through hole (310) may face the edge portion (410) of the second jig (400) in the width direction.

[0260] Accordingly, even if the first jig (300) faces the edge portion (410) of the second jig (400) in the width direction, the brush portion (510) can be installed to contact the edge portion (410) of the second jig (400) in the width direction. Accordingly, the edge portion (410) of the second jig (400), particularly the first ring area (416), can be cleaned effectively and stably.

[0261] The second moving part (550) can be combined with the brush part (510). The second moving part (550) can move the brush part (510) in the width direction. For example, the brush part (510) can be moved in the width direction by the second moving part (550) moving in the width direction. For example, the second moving part (550) can be moved in the width direction by means of a cylinder (not shown) coupled to the second moving part (550).

[0262] Accordingly, the installation and removal of the brush part (510) can be performed easily and stably.

[0263] The suction tube (560) may be positioned adjacent to the edge portion (410) or the brush portion (510). The suction tube (560) can suck up foreign matter.

[0264] Accordingly, foreign matter can be effectively removed. In addition, scattering of foreign matter can be prevented.

[0265] One end of the suction tube (560) may be opened toward the edge portion (410) or the brush portion (510). The other end of the suction tube (560) may be connected to a pressure reducer (not shown) that provides negative pressure to the suction tube (560).

[0266] As described above, when the second jig (400) includes a first part (400a) and a second part (400b) that are in contact with the second sheet part (54), the brush part (510) may be in contact with the lower edge part (410) of the second part (400b), and the suction pipe (560) may be positioned lower than the brush part (510) (Fig. 8). Here, the first part (400a) may be in contact with or face the second sheet part (54) as described above.

[0267] Accordingly, since the brush portion (510) contacts the edge portion (410) of the second portion (400b) far from the electrode sheet (50), contamination of the electrode sheet (50) by foreign matter separated from the edge portion (410) can be prevented. In addition, since the brush portion (510) contacts the edge portion (410) of the lower part of the second portion (400b) and the suction pipe (560) is positioned below it, foreign matter separated from the edge portion (410) can be effectively introduced into the suction pipe (560).

[0268] [Electrode Manufacturing Method]

[0269] Referring to FIG. 12, an electrode manufacturing method (S700) according to one embodiment may include a laser processing process (S710). The electrode manufacturing method (S700) may further include a jig replacement process (S720).

[0270] In the laser processing process (S710), the laser irradiation unit (200) can irradiate a laser at a first point (N1) of the first sheet portion (52) of the electrode sheet (50) being transported by the transport unit (100). At this time, the first jig (300) and the second jig (400), which face each other in the width direction, can come into contact with the first sheet portion (52) and the second sheet portion (54) of the electrode sheet (50), respectively. The second jig (400) can rotate when the electrode sheet (50) is transported. Depending on the rotation of the second jig (400), the edge portion (410) of the second jig (400) adjacent to the first point (N1) and adjacent to or in contact with the electrode sheet (50) can be cleaned by the brush portion (510) of the cleaning unit (500).

[0271] Accordingly, in an electrode manufacturing device in which a part of a jig (first jig) used to support an electrode sheet (50) during laser processing of the electrode sheet (50) (first jig) is separated into a first jig (300) and a second jig (400) so that the jig can be easily cleaned or replaced, the cleaning unit (500) cleans the second jig (400), so that foreign matter such as fumes generated by laser processing may not accumulate or adhere to the second jig (400). Accordingly, laser processing defects, damage to the electrode sheet (50), contamination, and low voltage defects of the battery cell caused by foreign matter accumulated or adhered to the second jig (400) can be prevented or reduced.

[0272] In particular, since the edge portion (410) of the second jig (400) being cleaned by the cleaning unit (500) is adjacent to the laser irradiation point (first point, N1) as the second jig (400) rotates, it is possible to effectively prevent foreign matter from accumulating or adhering to the second jig (400). In addition, since the edge portion (410) of the second jig (400) being cleaned by the cleaning unit (500) is adjacent to or in contact with the electrode sheet (50) as the second jig (400) rotates, damage and contamination of the electrode sheet (50) and laser processing defects can be prevented.

[0273] In addition, the edge portion (410) of the second jig (400) used for laser processing can be simply and effectively cleaned with the brush portion (510) during the laser processing process (i.e., without needing to stop the laser processing process). Accordingly, the cost of manufacturing the electrode and the maintenance cost of the electrode manufacturing device (10) can be reduced, and the productivity of the electrode can be improved.

[0274] Meanwhile, in the laser processing process (S710), the brush part (510) may be positioned adjacent to the first jig (300) or through the first jig (300).

[0275] In the jig replacement process (S720), the first jig (300) can be replaced. The jig replacement process (S720) may include a brush part removal process (S722), a first jig replacement process (S724), and a brush part installation process (S726).

[0276] In the brush part removal process (S722), the brush part (510) can be moved so that the brush part (510) moves away from the first jig (300). At this time, the brush part (510) can move in the width direction (e.g., left-right direction). For example, the brush part (510) can be moved away from the first jig (300) by the second moving part (550) moving in the width direction together with the brush part (510) (Fig. 9).

[0277] In the first jig replacement process (S724), the first jig (300) can be replaced. The first jig replacement process (S724) may include a retraction process, a rotation process, and a forward process.

[0278] During the retraction process, the first jig (300) located at the first position (P1) can be moved away from the first sheet portion (52). For example, the first jig (300) can be moved away from the first sheet portion (52) by moving the first moving part (350) together with the first jig (300) in the thickness direction (Fig. 10).

[0279] During the rotation process, the first jig (300) located at the second position (P2) can be rotated to the first position (P1). For example, the first jig (300) can be rotated to the first position (P1) by rotating the first moving part (350) together with the first jig (300) (Fig. 11). Meanwhile, the first jig (300) located at the second position (P2) can be cleaned by a separate cleaning device (not shown) during the laser processing process (S710).

[0280] During the forward movement process, the first jig (300) located at the first position (P1) can be moved so that it comes into contact with the first sheet portion (52). For example, the first moving part (350) can move together with the first jig (300) in the thickness direction so that the first jig (300) comes into contact with the first sheet portion (52).

[0281] In the brush section installation process (S726), the brush section (510) can be moved so that it is adjacent to or penetrates the first jig (300). At this time, the brush section (510) can be moved in the width direction. For example, the second moving section (550) can move in the width direction together with the brush section (510) so that the brush section (510) is adjacent to or penetrates the first jig (300).

[0282] Accordingly, even if the brush part (510) for cleaning the second jig (400) is positioned adjacent to the first jig (300) or through the first jig (300), the first jig (300) can be replaced without interfering with the brush part (510).

[0283] 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.

[0284] 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 conveying unit (100) for conveying an electrode sheet (50) in the longitudinal direction, the electrode sheet (50) comprising a first sheet portion (52) and a second sheet portion (54) which are respectively located on the first side and the second side in the width direction and extend in the longitudinal direction; A laser irradiation unit (200) that irradiates a laser at a first point (N1) of the first sheet unit (52) that is transported by the above transport unit (100); A first jig (300) positioned facing the first point (N1) in the thickness direction or positioned adjacent to the first point (N1) and in contact with the first sheet portion (52) in the thickness direction; A second jig (400) positioned on the second side of the first jig (300) and the first point (N1) in the width direction, positioned facing the first jig (300) in the width direction, and in contact with the second sheet portion (54) in the thickness direction; and It includes a cleaning unit (500) for cleaning the edge portion (410) of the second jig (400), which can be adjacent to the first point (N1) and can be adjacent to or in contact with the electrode sheet (50). The edge portion (410) includes a part of the first side (402) of the second jig (400) facing the first jig (300) in the width direction. Electrode manufacturing device.

2. In Claim 1, The above edge portion (410) is an electrode manufacturing device comprising a first end portion region (412) located on the first side (402) and located at the end of the first side (402) that is in contact with or adjacent to the electrode sheet (50) in the thickness direction.

3. In claim 1 or claim 2, The second jig (400) includes a first portion (405) of an outer surface (404) that contacts or faces adjacently the electrode sheet (50) in the thickness direction. The above edge portion (410) includes a second end portion region (414) located at the end of the first portion (405) which is adjacent to the first jig (300) in the width direction, in an electrode manufacturing device.

4. In Claim 1, The second jig (400) above is a roller that rotates when the electrode sheet (50) is transported, and An electrode manufacturing device in which the edge portion (410) is cleaned by the cleaning unit (500) while the second jig (400) rotates.

5. In Claim 4, The above edge portion (410) includes a ring-shaped first ring region (416) located on the first side (402) and forming the outer end of the first side (402) in a radial direction, an electrode manufacturing device.

6. In claim 4 or claim 5, The second jig (400) includes a cylindrical outer surface (404) that comes into contact with or faces adjacent to the electrode sheet (50) in the thickness direction according to the rotation of the second jig (400). The above edge portion (410) includes a ring-shaped second ring region (418) located on the outer surface (404) and forming the end of the first side of the outer surface (404) in the width direction, an electrode manufacturing device.

7. In Claim 4, The above cleaning unit (500) is an electrode manufacturing device comprising a brush portion (510) that contacts the edge portion (410).

8. In Claim 7, The above edge portion (410) includes a ring-shaped first ring area (416) located on the first side (402) and forming the outer end of the first side (402) in a radial direction, and The above brush portion (510) comprises a first brush portion (512) that is positioned facing the first ring area (416) in the width direction and contacts the first ring area (416), forming an electrode manufacturing device.

9. In claim 7 or claim 8, The second jig (400) includes a cylindrical outer surface (404) that comes into contact with or faces adjacent to the electrode sheet (50) in the thickness direction according to the rotation of the second jig (400). The edge portion (410) includes a ring-shaped second ring area (418) located on the outer surface (404) and forming the end of the first side of the outer surface (404) in the width direction. The above brush portion (510) is an electrode manufacturing device comprising a second brush portion (514) that is radially positioned facing the second ring area (418) and contacts the second ring area (418).

10. In Claim 8, The second jig (400) includes a cylindrical outer surface (404) that comes into contact with or faces adjacent to the electrode sheet (50) in the thickness direction according to the rotation of the second jig (400). The edge portion (410) includes a ring-shaped second ring area (418) located on the outer surface (404) and forming the end of the first side of the outer surface (404) in the width direction. The brush portion (510) comprises a second brush portion (514) that is positioned facing the second ring area (418) in a radial direction and contacts the second ring area (418). The first brush section (512) and the second brush section (514) are combined in an electrode manufacturing device.

11. In Claim 10, An electrode manufacturing device in which, when projected onto a virtual plane parallel to the virtual rotation axis (A) of the second jig (400) and passing through the virtual rotation axis (A) and the second brush part (514), the brush part (510) forms an L-shape.

12. In Claim 11, An electrode manufacturing device, wherein when projected onto a virtual plane perpendicular to the virtual rotation axis (A), the first brush part (512) is formed to extend obliquely in a direction having an angle difference of less than 90 degrees with respect to the extension direction of the first straight line (L1) connecting the midpoint of the first end part (E1) of the first brush part (512) combined with the second brush part (514) and the virtual rotation axis (A).

13. In any one of claims 7 to 12, The above brush portion (510) is movable in the width direction and can move in the width direction to come into contact with the edge portion (410), forming an electrode manufacturing device.

14. In Claim 13, The first jig (300) above is an electrode manufacturing device that is movable in the thickness direction.

15. In claim 13 or claim 14, The first jig (300) includes a through hole (310) that penetrates the first jig (300) in the width direction, and The above brush part (510) is capable of entering or penetrating the through hole (310) in the width direction or exiting from the through hole (310), forming an electrode manufacturing device.

16. In Claim 15, The above through hole (310) is an electrode manufacturing device facing the above edge portion (410) in the width direction.

17. In any one of claims 7 to 16, The above cleaning unit (500) is an electrode manufacturing device comprising a suction pipe (560) that is positioned adjacent to the edge portion (410) or brush portion (510) and sucks up foreign matter.

18. In Claim 17, The second jig (400) includes a first portion (400a) on one side and a second portion (400b) on the other side in the thickness direction, The first part (400a) above is in contact with the second sheet part (54), and The brush portion (510) is in contact with the edge portion (410) at the lower part of the second portion (400b), and The above suction tube (560) is positioned below the brush section (510), forming an electrode manufacturing device.

19. A method for manufacturing an electrode (S700) using an electrode manufacturing apparatus (10) according to any one of claims 7 to 18, The above laser irradiation unit (200) includes a laser processing process (S710) in which a laser is irradiated at the first point (N1) of the first sheet portion (52) of the electrode sheet (50) that is transported by the above transport unit (100). In the above laser processing process (S710), the first jig (300) and the second jig (400), which face each other in the width direction, respectively come into contact with the first sheet portion (52) and the second sheet portion (54) of the electrode sheet (50), and when the electrode sheet (50) is transported, the second jig (400) rotates, and according to the rotation of the second jig (400), the edge portion (410) of the second jig (400) that is adjacent to the first point (N1) and adjacent to or in contact with the electrode sheet (50) is cleaned by the brush portion (510) of the cleaning unit (500). Electrode manufacturing method.

20. In Claim 19, In the above laser processing process (S710), the brush portion (510) is positioned adjacent to or penetrating the first jig (300), and It further includes a jig replacement process (S720) for replacing the first jig (300) above. The above jig replacement process (S720) comprises a brush part removal process (S722) for moving the brush part (510) away from the first jig (300), a first jig replacement process (S724) for replacing the first jig (300), and a brush part installation process (S726) for moving the brush part (510) so that the brush part (510) is adjacent to or penetrates the first jig (300).

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