Discharge device, electrode slitting system, and electrode manufacturing method using same

Abstract

The present invention relates to a discharge device provided to cut an electrode sheet in the widthwise direction to form a plurality of electrodes and then discharge remaining offcuts except for the plurality of electrodes, the discharge device comprising: a discharge part provided to discharge the offcuts to the outside; a discharge guide roller provided to transfer the offcuts to the discharge part; and a meandering control roller provided in a section in which the offcuts are transferred to the discharge part and having a comb-pattern formed on the surface thereof to control the positions of the offcuts coming into contact with a roll surface in one direction or in the other direction.

Description

Discharge device, electrode slitting system and electrode manufacturing method using the same

[0001] The present invention relates to an ejection device, an electrode slitting system, and an electrode manufacturing method using the same, and more particularly, to an ejection device, an electrode slitting system, and an electrode manufacturing method using the same, which can prevent short circuiting of cutting residue of an electrode sheet and minimize damage to the cutting surface of a cut electrode.

[0002] This application claims the benefit of priority to Korean Patent Application No. 10-2023-0175713, filed December 6, 2023, the entire contents of which are incorporated herein by reference.

[0003] Recently, rechargeable secondary batteries have been widely used as a power source for wireless mobile devices. Furthermore, secondary batteries are also attracting attention as a potential energy source for electric and hybrid electric vehicles, which are being proposed as a solution to air pollution caused by existing gasoline and diesel vehicles that use fossil fuels. Consequently, the applications that utilize secondary batteries are diversifying significantly due to their advantages, and it is expected that secondary batteries will be applied to a wider range of fields and products in the future.

[0004] A secondary battery of this type includes an electrode assembly in which electrodes and separators are alternately laminated, and a case that accommodates the electrode assembly, and the electrode assembly has a structure in which a plurality of electrodes and a plurality of separators are alternately laminated.

[0005] And the secondary battery includes an electrode manufacturing process for manufacturing an electrode, an electrode assembly assembly process for assembling an electrode assembly by laminating the manufactured electrode and a separator, and a process for manufacturing a secondary battery by accommodating the manufactured electrode assembly in a case.

[0006] Fig. 1 is a schematic diagram showing the appearance of a conventional electrode slitting device (30). Fig. 2 is a schematic diagram showing the appearance of cutting an electrode sheet (10) of a conventional electrode slitting device (30).

[0007] Referring to FIGS. 1 and 2, in the electrode manufacturing process, an electrode sheet (10) supplied from an unwinder (31) is transferred to an electrode cutting unit (20) via a transfer roller (32), and the electrode sheet (10) is moved in a transfer direction (F) between an upper blade (21) and a lower blade (22) of the cutting unit (20), thereby cutting the electrode sheet (10) at regular intervals in the width direction to form a plurality of electrodes (11). Each of the electrodes formed by being cut into a plurality of pieces is wound on an electrode recovery rewinder (34) while being transferred along a corresponding lane.

[0008] At this time, the electrode portion formed by cutting the electrode sheet is called a slitting lane, and the lane located at the edge portion excluding this slitting lane is called an edge lane (12). This edge lane (12) is an unnecessary portion that is not used as an electrode, and is either discharged directly to the outside or wound around a waste rewinder (33) and recovered, and then disposed of to the outside.

[0009] However, in the electrode manufacturing process of the prior art, if the edge lane (12) created by trimming the edge of the electrode sheet (10) is not adjusted in skew or tension during the process of moving through the transfer roller (32), interference is likely to occur between the edge lane (12) and the adjacent slitting lane (11a) among the slitting lanes (11a, 11b). This interference may cause a disconnection of the edge lane (12), or if the distance between the edge lane (12) and the slitting lane (11a) becomes too wide, serious damage may occur to the cut surface of the slitting lane. For example, damage to the cut surface of the slitting lane may cause some tears to occur, sharp metal burrs to be created on the cut surface, or curls to be created where the edges are curved.

[0010] Therefore, improvements are needed in the process and device to prevent interference between the edge lane and the slitting lane used as the electrode that may occur during the cutting process and the discharge process, and to improve the cut surface quality of the slitting lane.

[0011] The present invention aims to solve problems occurring in the process of cutting a conventional electrode sheet and transporting the cutting residue.

[0012] Through one embodiment of the present invention, it is possible to prevent short circuiting of cutting residues due to interference between cut electrodes that occurs when skewing control is not performed during the discharge process, and also to prevent the distance between the cutting residues and the cut electrodes from becoming too wide, thereby preventing damage to the cut surface of the cut electrode, an electrode slitting system, and an electrode manufacturing method using the same are provided.

[0013] In order to achieve the above-described object, according to one embodiment of the present invention, there is provided a discharge device which is provided to discharge cutting residues excluding the plurality of electrodes after cutting an electrode sheet in the width direction to form a plurality of electrodes, the discharge device including: a discharge portion provided to discharge the cutting residues to the outside; a discharge guide roller provided to transport the cutting residues to the discharge portion; and a meandering control roller which is provided during the process of transporting the cutting residues to the discharge portion and has a surface structured in at least a portion of the surface to control a position of the cutting residues in contact with the roll surface in one direction or the other.

[0014] The above structured surface may include a comb-like pattern arranged in an inclined direction with respect to the rotational axis of the above-mentioned skewing control roller.

[0015] The above-mentioned slewing control roller may include a rotating shaft configured to rotate to transmit rotational force to the cutting residue; and an elastic roll provided on the rotating shaft and having the comb-like pattern formed on the surface.

[0016] The above-mentioned skewing control roller may have a first comb pattern formed on its surface, which is designed to move the position of the cutting residue in one direction on the above-mentioned skewing control roller; and a second comb pattern formed at a distance from the first comb pattern and which is designed to move the cutting residue in another direction on the above-mentioned skewing control roller.

[0017] In addition, the first comb pattern and the second comb pattern may be arranged to apply force to the cutting residue passing through each comb pattern in a direction toward the center of the rotation axis of the meandering adjustment roller.

[0018] The first comb pattern is formed on one side based on the center of the rotation axis direction of the meandering control roller and is a comb pattern inclined toward the center on one side, and the second comb pattern is formed on the other side based on the center of the rotation axis direction of the meandering control roller and is a comb pattern inclined toward the center on the other side, and a space between the first comb pattern and the second comb pattern may be a plain pattern.

[0019] It may further include a position adjusting unit provided to adjust the position of the above-mentioned slewing adjustment roller in one direction or the other.

[0020] It may further include a tension control roller configured to pressurize the transported cutting residue to maintain a constant tension of the cutting residue wound around the discharge guide roller.

[0021] The above discharge unit may include a suction unit configured to suck up the cutting residue and discharge it to the outside.

[0022] In order to achieve the above-described object, according to one embodiment of the present invention, there is provided an electrode slitting system for forming a plurality of electrodes by cutting an electrode sheet in a width direction, the electrode slitting system comprising: a supply unit for supplying the electrode sheets; an electrode cutting unit for cutting the electrode sheets supplied from the supply unit in a width direction to form a plurality of electrodes; a winding unit having a recovery roll for winding the plurality of electrodes; a transport roller provided to transport the plurality of electrodes to the winding unit; a discharge unit for discharging cutting residue remaining after cutting the electrode sheets to the outside; a discharge guide roller provided to transport the cutting residue to the discharge unit; and a meandering control roller provided in the electrode cutting unit during a transport process of the discharge unit and having a surface structured in at least a portion of the surface to control a position of the cutting residue in contact with the roll surface in one direction or the other.

[0023] The above structured surface may include a comb-like pattern arranged in an inclined direction with respect to the rotational axis of the above slewing control roller.

[0024] The above-mentioned slewing control roller may include a rotating shaft configured to rotate to transmit rotational force to the cutting residue; and an elastic roll provided on the rotating shaft and having the comb-like pattern formed on the surface.

[0025] The above-mentioned skewing control roller may have a first comb pattern formed on its surface that is arranged to move the position of the cutting residue in one direction on the skewing control roller in order to control the skewing of the cut portion of the electrode sheet, and a second comb pattern that is positioned apart from the first comb pattern and is arranged to move in the other direction on the skewing control roller.

[0026] In addition, the first comb pattern and the second comb pattern may be arranged to apply force to the cutting residue passing through each comb pattern in a direction toward the center of the rotation axis of the meandering adjustment roller.

[0027] It may further include a position adjusting unit provided to adjust the position of the above-mentioned slewing adjustment roller in one direction or the other.

[0028] It may further include a tension control roller configured to pressurize the transported cutting residue to maintain a constant tension of the cutting residue wound around the discharge guide roller.

[0029] The above discharge unit may include a suction unit configured to suck up the cutting residue and discharge it to the outside.

[0030] In order to achieve the above-described object, according to one embodiment of the present invention, there is provided a method for manufacturing a plurality of electrodes by cutting electrode sheets using a slitting system including a supply unit, an electrode cutting unit, a winding unit, a transport roller, a discharge unit, a discharge guide roller, and a meandering control roller, the method comprising: a supply step in which the supply unit supplies the electrode sheets to the electrode cutting unit; a forming step in which the electrode cutting unit cuts the supplied electrode sheets in the width direction to form a plurality of electrodes; a winding transport step in which the formed plurality of electrodes are transported to the winding unit; a winding recovery step in which the winding unit winds the formed plurality of electrodes; a discharge transport step in which the discharge guide roller cuts the electrode sheets and transports the remaining cutting residue to the discharge unit; a meandering control step in which the meandering control roller controls the position of the cutting residue in contact with the roll surface in one direction or the other during the transport process of the discharge unit from the electrode cutting unit; and a final discharge step in which the discharge unit discharges the cutting residue to the outside.

[0031] Through one embodiment of the present invention, the discharge device of the present invention can prevent short circuits caused by interference between cut electrodes that occurs when the stray control is not performed during the discharge process.

[0032] In addition, the present invention can prevent the distance between the cutting residue and the cut electrode from becoming too wide, thereby preventing damage from occurring on the cut surface of the cut electrode, thereby having the advantage of effectively improving the electrode quality.

[0033] Figure 1 is a schematic diagram showing the appearance of one electrode slitting device of the prior art.

[0034] Figure 2 is a schematic diagram showing a cutting process of an electrode sheet using a conventional electrode slitting device.

[0035] Figure 3 is a schematic diagram showing an electrode slitting system including a discharge device according to one embodiment of the present invention.

[0036] Fig. 4 is a perspective view schematically showing the appearance of a slewing control roller of a discharge device according to one embodiment of the present invention.

[0037] FIG. 5 is a perspective view schematically showing a state in which a skewing is controlled through a skewing control roller of a discharge device according to one embodiment of the present invention.

[0038] FIG. 6 is a perspective view schematically showing a state in which a skewing is controlled through a skewing control roller of a discharge device according to another embodiment of the present invention.

[0039] Figure 7 is a flowchart illustrating a method for manufacturing a plurality of electrodes according to one embodiment of the present invention.

[0040] Hereinafter, an exhaust device and an electrode slitting system according to one embodiment of the present invention will be described in detail with reference to the attached drawings.

[0041] In addition, regardless of the drawing symbol, identical or corresponding components are given identical or similar reference numbers and redundant descriptions thereof are omitted, and for the convenience of explanation, the size and shape of each component depicted may be exaggerated or reduced.

[0042] Fig. 3 is a schematic diagram illustrating an electrode slitting system (200) including an ejection device (100) according to one embodiment of the present invention. Fig. 4 is a perspective view schematically illustrating a skewing control roller (130) of an ejection device (100) according to one embodiment of the present invention. In addition, Fig. 5 is a perspective view schematically illustrating a skewing control through a skewing control roller (130) of an ejection device (100) according to one embodiment of the present invention.

[0043] Referring to FIGS. 3 to 5, a discharge device (100) according to one embodiment of the present invention may be configured to discharge the remaining cutting residue (12) excluding the plurality of electrodes (11) after cutting the electrode sheet (10) in the width direction to form a plurality of electrodes (11).

[0044] To this end, the discharge device (100) of the present invention includes a discharge unit (110), a discharge roller (120), and a skewing control roller (130). Specifically, the discharge unit (110) may be provided to discharge cutting residue (12) to the outside. For example, the discharge unit (110) may transfer the obtained cutting residue (12) to an external waste storage facility along a suction pipe (not shown) in a suction manner. To this end, the discharge unit (110) may include a negative pressure pump that generates negative pressure. For example, the negative pressure pump may be a diaphragm pump, a rotary pump, a vacuum pump, or the like.

[0045] In addition, the discharge roller (120) may be provided to transport the cutting residue (12) to the discharge unit (110). Specifically, the discharge roller (120) includes a roll that supports and moves the cutting residue (12). The discharge roller (120) has a support (not shown) that supports the roll. The discharge roller (120) has a driving device (not shown) that rotates the rotational axis (131) of the roll.

[0046] In addition, the skewing control roller (130) may be provided during the process of transporting the cutting residue (12) to the discharge unit (110). The skewing control roller (130) may have a surface structured in at least a portion of the area to shift the position of the cutting residue (12) in contact with the roll surface in one direction or the other. Here, the structured surface may be created by processing into a positive (protrusion) / negative (groove) pattern using laser processing, CNC processing, etc., or a specific pattern may be created by modifying the surface properties, or by using a method such as deposition, coating, or printing. However, it is not necessarily limited to these processing methods, and any general method for processing the roll surface may be applied. In addition, the roughness of the structured surface needs to be set to a level that does not cause breakage of the cutting residue (12).

[0047] For example, the slewing control roller (130) may be arranged to shift the cutting residue (12) located on the surface in one direction (positive direction of the X-axis) or the other direction (negative direction of the X-axis) in the direction of the rotation axis (131).

[0048] The skewing control roller (130) may have a comb pattern (133) formed on the roll surface for skewing control. The comb pattern (133) of the skewing control roller (130) may generate frictional force in one or the other direction with the transported skewing residue (12). That is, the skewing control roller (130) may induce the skewing residue (12) to shift in the direction in which the comb pattern (133) is inclined.

[0049] Accordingly, the discharge device (100) of the present invention can prevent short circuits caused by interference between cut electrodes (11) (slitting lanes) that occur when skewing control is not performed during the discharge process of cutting residue (12), and can also prevent the distance between the cut residue (12) (edge ​​lane) and the cut electrode (11) (slitting lane) from becoming too wide, thereby preventing damage to the cut surface of the cut electrode (11) (slitting lane), and thus has the advantage of effectively improving the quality of the electrode (11).

[0050] In addition, the skewing control roller (130) includes a rotational shaft (131) and an elastic roll (132). The rotational shaft (131) may be configured to rotate to transmit rotational force to the cutting residue (12). The skewing control roller (130) may include a driving unit (not shown) that applies rotational force to the rotational shaft (131). In addition, the skewing control roller (130) may include an elastic roll (132) provided on the rotational shaft (131). The elastic roll (132) may have a comb pattern (133) formed on the surface. For example, the elastic roll (132) may be a silicone roll or a rubber roll. The rubber may be, for example, natural rubber or synthetic rubber.

[0051] Accordingly, the discharge device (100) of the present invention includes a slewing control roller (130) including an elastic roll (132), thereby generating a constant frictional force on the electrode sheet (10) to enable precise slewing control, and can minimize wear of the electrode sheet (10) by having a smooth surface.

[0052] In addition, the skewing control roller (130) includes a first comb pattern (133a) designed to move the position of the cutting residue (12a) in one direction (positive direction of the X-axis). The first comb pattern (133a) may be formed on one side with respect to the center in the direction of the rotation axis (131) of the skewing control roller (130). The first comb pattern (133a) may be a comb pattern (133) that is inclined toward the center on the other side.

[0053] The skewing control roller (130) includes a second comb pattern (133b) designed to move the position of the cutting residue (12c) in the other direction (negative direction of the X-axis). The second comb pattern (133b) may be positioned apart from the first comb pattern (133a). That is, the second comb pattern (133b) may be formed on the other side with respect to the center in the direction of the rotation axis (131) of the skewing control roller (130). The second comb pattern (133b) may be a comb pattern (133) that is inclined from one side toward the center.

[0054] In addition, the first comb pattern (133a) and the second comb pattern (133b) may be arranged to apply force to the cutting residue passing through each comb pattern in a direction toward the center of the rotation axis of the skewing adjustment roller.

[0055] Specifically, referring to FIG. 5, the first comb pattern (133a) is formed on one side based on the center of the rotation axis (131) of the meandering control roller (130), and may be arranged to apply force to the cutting residue passing through the first comb pattern (133a) in a direction toward the center of the rotation axis of the meandering control roller.

[0056] In addition, the second comb pattern (133b) may be formed on the other side based on the center of the rotation axis (131) of the meandering control roller (130), and may be provided to apply force to the cutting residue passing through the second comb pattern (133b) in a direction toward the center of the rotation axis of the meandering control roller.

[0057] Additionally, the area between the first comb pattern (133a) and the second comb pattern (133b) formed on the roll surface may be a plain pattern (130a). In other words, the plain pattern (130a) portion can be said to be a portion where the cutting residue (12b) is not adjusted to meander in any direction.

[0058] In addition, the discharge device (100) of the present invention may include a position adjusting unit (135) provided to adjust the position of the skewing control roller (130) in one direction or the other. The position adjusting unit (135) may include a dial (135a) provided to allow a worker to manually adjust the position of the skewing control roller (130). For example, when a worker manually rotates the dial (135a) clockwise, the position of the roll of the skewing control roller (130) may be slightly moved in the X-axis direction. Conversely, when a worker manually rotates the dial (135a) counterclockwise, the position of the roll of the skewing control roller (130) may be slightly moved in the opposite direction to the X-axis direction. Therefore, the discharge device (100) of the present invention includes the position adjusting unit (135), so that the position of the skewing control roller (130) can be precisely adjusted, thereby enabling more precise skewing control.

[0059] In addition, the discharge device (100) of the present invention may include a tension control roller (140). The tension control roller (140) may be provided to pressurize the conveyed cutting residue (12) to maintain a constant tension of the cutting residue (12) wound around the discharge roller (120). The tension control roller (140) may include a nip roll. The nip roll may be provided with a roll made of, for example, a rubber material.

[0060] In addition, the discharge device (100) of the present invention may further include a suction unit (115). The suction unit (115) may be configured to suck in cutting residue (12) and discharge it to the outside. The suction unit (115) may be formed with a suction port (115a) for sucking in air. Therefore, the discharge equipment of the present invention can effectively recover cutting residue (12) using the suction unit (115) and effectively suck in and remove debris or dust generated during the cutting process.

[0061] Meanwhile, the present invention provides an electrode slitting system (200) according to one embodiment of the present invention. Specifically, the electrode slitting system (200) is a system that forms a plurality of electrodes (11) by cutting an electrode sheet (10) in a width direction (W) perpendicular to the running direction (F) of the electrode sheet (10), as shown in FIG. 2. In addition, the electrode slitting system (200) includes a supply unit (210) for supplying the electrode sheet (10) for this purpose. The supply unit (210) includes a driving unit (211) that drives the unwinder together with the unwinder.

[0062] The electrode slitting system (200) includes an electrode cutting unit (220) that cuts an electrode sheet (10) supplied from a supply unit (210) in the width direction to form a plurality of electrodes (11). The electrode slitting system (200) includes a winding unit (230) equipped with a recovery roll for winding a plurality of electrodes (11). The winding unit (230) includes a driving unit (231) that drives the winding unit together with the winding unit.

[0063] In addition, the electrode slitting system (200) includes a transport roller (240) configured to transport a plurality of electrodes (11) to a winding unit (230). The electrode slitting system (200) includes a discharge unit (110) configured to discharge the cutting residue (12) remaining after cutting the electrode sheet (10) to the outside. The electrode slitting system (200) includes a discharge roller (120) configured to transport the cutting residue (12) to the discharge unit (110).

[0064] Additionally, the electrode slitting system (200) includes a skewing control roller (130). The skewing control roller (130) may be provided during the transport process from the electrode cutting section (220) to the discharge section (110). The skewing control roller (130) has a surface structured in at least a portion thereof to control the position of the cutting residue (12) in contact with the roll surface in one direction or the other. Here, the structured surface may be a surface having a comb-like pattern (133) formed thereon.

[0065] Accordingly, the electrode slitting system (200) of the present invention can prevent short circuits caused by interference between cut electrodes (11) (slitting lanes) that occur when slitting is not controlled during the discharge process of cutting residue (12) by including a slitting control roller (130), and can also prevent the distance between the cut residue (12) (edge ​​lane) and the cut electrode (11) (slitting lane) from becoming too wide, thereby preventing damage to the cut surface of the cut electrode (11) (slitting lane), thereby having the advantage of effectively improving the quality of the electrode.

[0066] In addition, the skewing control roller (130) includes a rotational shaft (131) that is arranged to rotate to transmit rotational force to the cutting residue (12). The rotational shaft (131) may include an elastic roll (132) having a comb pattern (133) formed on the surface. Here, the rotational shaft (131) and the elastic roll (132) of the skewing control roller (130) are similar to or identical to the rotational shaft (131) and the elastic roll (132) of the skewing control roller (130) of the discharge device (100) described above, and therefore, a detailed description thereof will be omitted.

[0067] In addition, the meandering control roller (130) may have a first comb pattern (133a) formed on the surface thereof to move the position of the cutting residue (12) in one direction on the meandering control roller (130) in order to control the meandering of the cut portion of the electrode sheet (10), and a second comb pattern (133b) formed to move the position of the cutting residue (12) in the other direction on the meandering control roller (130).

[0068] In addition, the first comb pattern (133a) is formed on one side based on the center in the direction of the rotation axis (131) of the meandering control roller (130), and is a comb pattern (133) that is inclined toward the center from one side, and the second comb pattern (133b) is formed on the other side based on the center in the direction of the rotation axis (131) of the meandering control roller (130), and is a comb pattern (133) that is inclined toward the center from the other side, and the area between the first comb pattern (133a) and the second comb pattern (133b) on the roll surface may be a plain pattern (130a).

[0069] Specifically, referring to FIG. 5, the first comb pattern (133a) is formed on one side based on the center of the rotation axis (131) of the meandering control roller (130), and may be arranged to apply force to the cutting residue passing through the first comb pattern (133a) in a direction toward the center of the rotation axis of the meandering control roller.

[0070] In addition, the second comb pattern (133b) may be formed on the other side based on the center of the rotation axis (131) of the meandering control roller (130), and may be provided to apply force to the cutting residue passing through the second comb pattern (133b) in a direction toward the center of the rotation axis of the meandering control roller.

[0071] In addition, the electrode slitting system (200) of the present invention may further include a position adjusting unit (135) provided to adjust the position of the slewing adjustment roller (130) in one direction or the other. Here, the position adjusting unit (135) is similar to or identical to the position adjusting unit (135) of the discharge device (100) described above, so a detailed description thereof will be omitted.

[0072] In addition, the electrode slitting system (200) of the present invention may further include a tension control roller (140) provided to pressurize the transported cutting residue (12) to maintain a constant tension of the cutting residue (12) wound around the discharge roller (120). Here, the tension control roller (140) is similar to or identical to the tension control roller (140) of the discharge device (100) described above, and thus a detailed description thereof will be omitted.

[0073] In addition, the discharge unit (110) may include a suction unit (115) designed to suck up the cutting residue (12) and discharge it to the outside. Here, the suction unit (115) is similar to or identical to the suction unit (115) of the discharge device (100) described above, so a detailed description thereof is omitted.

[0074] FIG. 6 is a perspective view schematically showing a state in which a skewing is controlled through a skewing control roller of a discharge device according to another embodiment of the present invention.

[0075] Referring to FIG. 6, a discharge device (100) according to another embodiment of the present invention may further include a position detection unit (150) (not shown) for detecting the position of the cutting residue (12c) on the meandering control roller (130) together with a position adjustment unit (135) for adjusting the position of the meandering control roller (130). For example, the position detection unit (150) may include a camera (151) for photographing the cutting residue (12c) and the meandering control roller (130), and an analysis unit (not shown) for analyzing the image generated by the camera (151) to determine the extent to which the cutting residue (12c) deviates from the proper position. For example, the analysis unit may be a computing device capable of analyzing the contents of an image file.

[0076] For example, if the position detection unit (150) detects that the cutting residue (12c) is not moving from the set position on the skewing control roller (130), the position control unit (135) can be controlled to move the position of the skewing control roller (130) in the direction of the rotation axis.

[0077] Accordingly, the discharge device (100) of the present invention can achieve more precise sway control by further including a position detection unit (150).

[0078] Figure 7 is a flowchart illustrating a method for manufacturing a plurality of electrodes according to one embodiment of the present invention.

[0079] Referring again to FIG. 7 together with FIGS. 3 to 5, the present invention provides a method for manufacturing a plurality of electrodes (11) by cutting an electrode sheet (10). Specifically, the electrode (11) manufacturing method of the present invention manufactures a plurality of electrodes (11) by cutting an electrode sheet (10) using an electrode slitting system (200) including a supply unit (210), an electrode cutting unit (220), a winding unit (230), a transport roller (240), a discharge unit (110), a discharge roller (120), and a meandering control roller (130).

[0080] More specifically, the method for manufacturing an electrode (11) of the present invention includes a supply step (M01). In the supply step (M01), a supply unit (210) supplies an electrode sheet (10) to an electrode cutting unit (220).

[0081] In addition, the method for manufacturing an electrode (11) of the present invention includes a forming step (M02). In the forming step (M02), an electrode cutting unit (220) cuts the supplied electrode sheet (10) in the width direction to form a plurality of electrodes (11).

[0082] In addition, the method for manufacturing an electrode (11) of the present invention includes a winding and transporting step (M03). The winding and transporting step (M03) transports the plurality of electrodes (11) formed above to a winding unit (230).

[0083] In addition, the method for manufacturing an electrode (11) of the present invention includes a winding recovery step (M04). In the winding recovery step (M04), the winding unit (230) winds the plurality of electrodes (11) formed above.

[0084] In addition, the method for manufacturing an electrode (11) of the present invention includes a discharge transport step (M05). In the discharge transport step (M05), a discharge roller (120) cuts the electrode sheet (10) and transports the remaining cutting residue (12) to a discharge unit (110).

[0085] In addition, the method for manufacturing an electrode (11) of the present invention includes a skewing control step (M06). The skewing control step (M06) controls the position of the cutting residue (12) that comes into contact with the roll surface during the conveyance process from the electrode cutting section (220) to the discharge section (110) by the skewing control roller (130) in one direction or the other.

[0086] In addition, the method for manufacturing the electrode (11) of the present invention includes a final discharge step (M07). In the final discharge step (M07), the discharge unit (110) can discharge the cutting residue (12) to the outside.

[0087] For example, the winding transport step (M03), the winding recovery step (M04), the discharge transport step (M05), the meandering control step (M06), and the final discharge step (M07) can be performed simultaneously. That is, the formed electrode (11) can be transported for winding, and the generated cutting residue (12) can be discharged and moved for disposal.

[0088] Accordingly, the electrode (11) manufacturing method of the present invention can prevent short circuits caused by interference between cut electrodes (11) (slitting lanes) that occur when slitting control is not performed during the discharge process of cutting residue (12) by including a skewing control step (M06), and can also prevent the distance between the cut residue (12) (edge ​​lane) and the cut electrode (11) (slitting lane) from becoming too wide, thereby preventing damage to the cut surface of the cut electrode (11) (slitting lane), and thus has the advantage of effectively improving the quality of the electrode (11).

[0089] The preferred embodiments of the present invention described above are disclosed for the purpose of illustration, and those skilled in the art having ordinary knowledge of the present invention will be able to make various modifications, changes, and additions within the spirit and scope of the present invention, and such modifications, changes, and additions should be considered to fall within the scope of the following claims.

[0090] Through one embodiment of the present invention, the discharge device of the present invention can prevent short circuits caused by interference between cut electrodes that occurs when the stray control is not performed during the discharge process.

Claims

1. A discharge device provided to discharge the remaining cutting residue excluding the plurality of electrodes after cutting the electrode sheet in the width direction to form a plurality of electrodes. A discharge portion provided to discharge the above-mentioned cutting residue to the outside; A discharge guide roller provided to transport the above-mentioned cutting residue to the discharge portion; and A discharge device characterized by including a skewing adjustment roller having a structured surface in at least a portion of which is provided during the process of conveying the cutting residue to the discharge section so as to adjust the position of the cutting residue in contact with the roll surface in one direction or the other.

2. In paragraph 1, The above structured surface is, A discharge device characterized by including a comb-shaped pattern arranged in an inclined direction with respect to the rotation axis of the above-mentioned slewing control roller.

3. In paragraph 2, The above-mentioned gambling control roller is, A rotating shaft arranged to rotate to transmit rotational force to the above-mentioned cutting residue; and A discharge device characterized by including an elastic roll provided on the above-mentioned rotating shaft and having the above-mentioned comb-like pattern formed on the surface.

4. In paragraph 2, The above-mentioned gambling control roller is, A first comb pattern arranged to move the position of the cutting residue in one direction on the above-mentioned slewing adjustment roller; and A second comb-like pattern is formed on the surface, positioned apart from the first comb-like pattern and arranged to move in a different direction on the slant control roller, A discharge device in which the first comb pattern and the second comb pattern are each configured to apply force to the cutting residue passing through each comb pattern in a direction toward the center of the rotation axis of the meandering adjustment roller.

5. In paragraph 4, The above first comb pattern is, It is a comb-like pattern formed on one side based on the center of the rotation axis direction of the above-mentioned slant adjustment roller and is inclined toward the center on one side. The above second comb pattern is, It is a comb-like pattern formed on the other side based on the center of the rotation axis of the above-mentioned slant adjustment roller and tilted toward the center from the other side. An exhaust device, characterized in that the space between the first comb-shaped pattern and the second comb-shaped pattern is a plain pattern.

6. In paragraph 2, A discharge device further comprising a position adjusting unit configured to adjust the position of the above-mentioned slewing adjustment roller in one direction or the other.

7. In paragraph 2, A discharge device further comprising a tension adjusting roller configured to pressurize the conveyed cutting residue to maintain a constant tension of the cutting residue wound around the discharge guide roller.

8. In an electrode slitting system that forms multiple electrodes by cutting an electrode sheet in the width direction, A supply unit for supplying the above electrode sheet; An electrode cutting unit that cuts the electrode sheet supplied from the supply unit in the width direction to form a plurality of electrodes; A winding unit having a recovery roll for winding the plurality of electrodes; A transport roller provided to transport the plurality of electrodes to the winding unit; A discharge unit that cuts the electrode sheet and discharges the remaining cutting residue to the outside; A discharge guide roller provided to transport the above-mentioned cutting residue to the discharge portion; and An electrode slitting system characterized by comprising a slitting control roller having a surface structured in at least a portion of a surface to control the position of the cutting residue coming into contact with the roll surface in one direction or the other, and which is provided during the conveying process of the discharge section in the electrode cutting section.

9. In paragraph 8, The above structured surface is, An electrode slitting system, characterized in that it includes a comb-shaped pattern arranged in an inclined direction with respect to the rotation axis of the above-mentioned slitting control roller.

10. In paragraph 9, The above-mentioned gambling control roller is, A rotating shaft arranged to rotate to transmit rotational force to the above-mentioned cutting residue; and An electrode slitting system characterized by including an elastic roll provided on the above-described rotating shaft and having a comb-like pattern formed on the surface.

11. In paragraph 9, The above-mentioned gambling control roller is, A first comb pattern provided to move the position of the cutting residue in one direction on the bending control roller to control the bending of the cut portion of the electrode sheet; and A second comb-shaped pattern is formed on the surface so as to move in a different direction on the above-mentioned slewing control roller, An electrode slitting system in which the first comb pattern and the second comb pattern are each configured to apply force to the cutting residue passing through each comb pattern in a direction toward the center of the rotation axis of the meandering adjustment roller.

12. In paragraph 11, The above first comb pattern is, It is a comb-like pattern formed on one side based on the center of the rotation axis direction of the above-mentioned slant adjustment roller and is inclined toward the center on one side. The above second comb pattern is, It is a comb-like pattern formed on the other side based on the center of the rotation axis of the above-mentioned slant adjustment roller and tilted toward the center from the other side. An electrode slitting system, characterized in that the space between the first comb-like pattern and the second comb-like pattern is a thin pattern.

13. In paragraph 9, An electrode slitting system further comprising a position adjusting unit configured to adjust the position of the above-described slitting adjusting roller in one direction or the other.

14. In paragraph 9, An electrode slitting system further comprising a tension adjusting roller configured to pressurize the conveyed cutting residue to maintain a constant tension of the cutting residue wound around the discharge guide roller.

15. A method for manufacturing a plurality of electrodes by cutting an electrode sheet using a slitting system including a supply section, an electrode cutting section, a winding section, a transport roller, a discharge section, a discharge guide roller, and a skewing control roller, A supply step in which the supply unit supplies the electrode sheet to the electrode cutting unit; A forming step in which the electrode cutting part cuts the supplied electrode sheet in the width direction to form a plurality of electrodes; A winding transfer step for transferring the plurality of electrodes formed above to the above winding section; A winding recovery step in which the above winding part winds up the plurality of formed electrodes; A discharge transport step in which the discharge guide roller cuts the electrode sheet and transports the remaining cutting residue to the discharge section; A slewing control step in which the slewing control roller controls the position of the cutting residue in contact with the roll surface during the conveying process of the discharge section from the electrode cutting section in one direction or the other; and An electrode manufacturing method characterized in that the discharge unit includes a final discharge step in which the cutting residue is discharged to the outside.

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