Jig cleaning device, jig cleaning method, electrode manufacturing device and electrode manufacturing method

Abstract

Provided in the present invention is a jig cleaning device (400) comprising a magnetic field generation unit (410) for generating a magnetic field (B), the intensity or direction of which changes over time, around foreign matter (M), which is a conductive matter attached to a jig (100). Accordingly, foreign matter (M) attached to the jig (100) can be easily removed at low cost and by means of a simple configuration. In addition, manufacturing defects in electrodes can be prevented, electrode yield can be improved, and the rate of operation of an electrode manufacturing apparatus (10) can be improved. In addition, since foreign matter (M) can be removed in a non-contact manner, abrasion or damage to the jig (100) can be prevented, extending the lifespan of the jig (100), and maintenance of the jig cleaning device (400) is easy.

Description

Jig cleaning device, jig cleaning method, electrode manufacturing device and electrode manufacturing method

[0001] This application claims the benefit of priority from Republic of Korea Patent Application No. 10-2024-0102524, dated August 1, 2024, the entire contents of which are incorporated herein by reference.

[0002] The present invention relates to a jig cleaning device, a jig cleaning method, an electrode manufacturing device, and an electrode manufacturing method, and more particularly, to a jig cleaning device, a jig cleaning method, an electrode manufacturing device, and an electrode manufacturing method, which effectively remove foreign substances attached to a jig and improve the operating rate of the electrode manufacturing device and the yield of the electrode.

[0003] With the growing demand for mobile devices, electric vehicles, and other devices, the demand for secondary batteries is rapidly increasing. In particular, lithium secondary batteries, with their high energy density and voltage, are commercialized and widely used.

[0004] In general, a secondary battery is manufactured by applying an electrode mixture containing an electrode active material, a conductive agent, a binder, etc., on an electrode current collector, drying the mixture, manufacturing an electrode, laminating the manufactured electrode with a separator, and then embedding and sealing the electrode in a battery case together with an electrolyte.

[0005] The electrode is manufactured by forming an electrode tab on a non-coated portion of an electrode sheet to which an electrode active material is not applied using a notching device and then cutting the electrode sheet to a predetermined length.

[0006] When forming electrode tabs using a laser notching device, foreign substances such as fumes generated during notching may accumulate or become stuck around the pattern holes of the pattern jig, causing problems such as defective notching, damage to the electrode sheet, and contamination. Therefore, the pattern jig must be periodically cleaned to remove foreign substances.

[0007] Conventionally, foreign matter adhered to a pattern jig was removed by spraying air on it or brushing the pattern jig. However, these methods are incapable of removing foreign matter strongly adhered to the pattern jig. Therefore, a method capable of effectively removing foreign matter strongly adhered to the pattern jig is required. In particular, a method capable of effectively removing foreign matter adhered to the pattern jig is required even if the foreign matter includes diamagnetic or paramagnetic materials (constituent materials of the electrode current collector).

[0008] A related prior art document is Republic of Korea Patent No. 10-2245162.

[0009] The present invention has been devised to solve the above-described problems, and its purpose is to provide a jig cleaning device and a jig cleaning method that can effectively remove foreign substances attached to a jig with a simple configuration and at low cost.

[0010] The present invention has been devised to solve the above-described problems, and its purpose is to provide a jig cleaning device and a jig cleaning method that prevent wear or damage to a jig, extend the life of the jig, and facilitate maintenance.

[0011] The present invention has been devised to solve the above-described problems, and its purpose is to provide a jig cleaning device and a jig cleaning method that effectively remove fumes generated when processing an electrode sheet with a laser and adhered to a jig.

[0012] The present invention has been devised to solve the above-described problems, and its purpose is to provide a jig cleaning device and a jig cleaning method that prevent processing defects, damage, and contamination of electrode sheets and reduce electrode manufacturing costs by reusing jigs.

[0013] The present invention has been devised to solve the above-described problems, and its purpose is to provide a jig cleaning device and a jig cleaning method that effectively remove foreign substances even if the foreign substances include diamagnetic or paramagnetic substances.

[0014] The present invention has been devised to solve the above-described problems, and its purpose is to provide a jig cleaning device and a jig cleaning method that prevent foreign substances, dust, etc. from flying outward.

[0015] The present invention has been devised to solve the above-described problems, and its purpose is to provide a jig cleaning device and a jig cleaning method that prevent accidents such as fire caused by heat generation of a jig or foreign matter.

[0016] The present invention has been devised to solve the above-described problems, and its purpose is to provide an electrode manufacturing device and an electrode manufacturing method that reduce the manufacturing cost of an electrode and improve the operating rate of an electrode manufacturing device and the productivity of an electrode.

[0017] The present invention has been devised to solve the above-described problems, and its purpose is to provide an electrode manufacturing device and an electrode manufacturing method that prevent electrode manufacturing defects and improve the yield of electrodes.

[0018] The present invention has been devised to solve the above-described problems, and its purpose is to provide an electrode manufacturing device and an electrode manufacturing method that effectively remove foreign substances and prevent foreign substances, dust, etc. from flying outward.

[0019] The technical objectives of the present invention are not limited to the purposes mentioned above. Other objectives and advantages of the present invention not mentioned above can be understood through the following description and will be more clearly understood through the embodiments of the present invention. Furthermore, it will be readily apparent that the objectives and advantages of the present invention can be realized by the means and combinations thereof set forth in the claims.

[0020] To solve the above-described problem, the present invention provides a jig cleaning device (400) including a magnetic field generating unit (410).

[0021] The above magnetic field generating unit (410) can generate a magnetic field (B) whose strength or direction changes over time around a foreign body (M), which is a conductor attached to a jig (100).

[0022] In one embodiment, an eddy current (I) whose strength or direction changes over time can be induced in the foreign body (M) by the magnetic field (B).

[0023] The interaction of the magnetic field (B) and the eddy current (I) may cause a Lorentz force (F) whose strength or direction changes over time to act on the foreign body (M).

[0024] In one embodiment, an eddy current (I) whose strength or direction changes over time can be induced in the foreign body (M) by the magnetic field (B).

[0025] The foreign material (M) can be heated by the above eddy current (I).

[0026] In one embodiment, the jig (100) can be used to support the electrode sheet (50) when processing the electrode sheet (50) with a laser.

[0027] The above foreign substance (M) can be formed when processing the electrode sheet (50) with a laser.

[0028] In one embodiment, the foreign substance (M) may include a diamagnetic material or a paramagnetic material.

[0029] In one embodiment, the magnetic field generating unit (410) may include one or more electromagnets (412) and a power supply unit.

[0030] The above one or more electromagnets (412) may be placed adjacent to the jig (100).

[0031] The above one or more electromagnets (412) can generate the magnetic field (B).

[0032] The above power supply unit can supply power to one or more electromagnets (412).

[0033] In one embodiment, the power supply can supply an alternating current to at least one of the electromagnets (412).

[0034] In one embodiment, the magnetic field generating unit (410) may include a plurality of the electromagnets (412).

[0035] The above plurality of electromagnets (412) can be spaced apart from each other.

[0036] The above power supply unit can supply power to the plurality of electromagnets (412).

[0037] In one embodiment, at least one of the electromagnets (412) can move or rotate.

[0038] In one embodiment, the power supply unit may supply direct current to a plurality of the electromagnets (412) spaced apart from each other, or supply direct current to at least one of the electromagnets (412) that moves or rotates.

[0039] In one embodiment, each of the electromagnets (412) may include a coil (414) and a core (416).

[0040] The above coil (414) may be composed of a conductor wound multiple times.

[0041] The core (416) may be inserted into the central portion of the coil (414) or may be placed through the central portion.

[0042] The above core (416) may include a ferromagnetic material having a high investment rate.

[0043] In one embodiment, each of the electromagnets (412) may include a coil (414).

[0044] The above coil (414) may be composed of a conductor wound multiple times.

[0045] The above jig (100) can be inserted into the central portion of the coil (414) of at least one electromagnet (412) or placed through the central portion.

[0046] In one embodiment, the jig cleaning device (400) may further include a housing (420).

[0047] The above housing (420) can surround the part of the magnetic field generating unit (410) that generates the magnetic field (B) and the jig (100).

[0048] In one embodiment, the housing (420) can shield the magnetic field (B).

[0049] In one embodiment, the jig cleaning device (400) may further include a suction port (430) and a pressure reducer.

[0050] The above suction port (430) can suck up the foreign matter (M) separated from the jig (100).

[0051] The above pressure reducer can be connected to the suction port (430).

[0052] The above pressure reducer can provide negative pressure to the suction port (430).

[0053] In one embodiment, the jig cleaning device (400) may further include one or more nozzles (440) and a pump.

[0054] The above one or more nozzles (440) can spray air toward the foreign substance (M) or an area adjacent to the foreign substance (M).

[0055] The above pump may be connected to one or more nozzles (440).

[0056] The above pump can pressurize air and supply it to one or more nozzles (440).

[0057] In one embodiment, the jig cleaning device (400) may further include a cooling unit.

[0058] The above cooling unit can cool the jig (100) or foreign material (M).

[0059] In addition, in order to solve the above-described problem, the present invention provides an electrode manufacturing device (10) including one or more jigs (100), a jig moving part (200), a laser irradiation part (300), and the jig cleaning device (400).

[0060] The above one or more jigs (100) can move to a first position (P1) and a second position (P2).

[0061] The above jig moving unit (200) can move each jig (100) to the first position (P1) and the second position (P2).

[0062] The above laser irradiation unit (300) can irradiate a laser to the electrode sheet (50).

[0063] The above jig cleaning device (400) can clean each of the jigs (100).

[0064] Each of the jigs (100) positioned at the first position (P1) can face the laser irradiation unit (300) with the electrode sheet (50) interposed therebetween.

[0065] Each of the jigs (100) positioned at the first position (P1) can support an electrode sheet (50).

[0066] Each of the jigs (100) positioned at the second position (P2) may be adjacent to the magnetic field generating unit (410) of the jig cleaning device (400).

[0067] In one embodiment, the electrode manufacturing device (10) may further include a cleaning device moving unit.

[0068] The above cleaning device moving unit can move the jig cleaning device (400) forward toward each jig (100) positioned at the second position (P2) or retreat from each jig (100) positioned at the second position (P2).

[0069] In addition, to solve the above-described problem, the present invention provides a jig cleaning method (S700) including a magnetic field generation process (S730).

[0070] In the above magnetic field generation process (S730), the magnetic field generation unit (410) can generate a magnetic field (B) whose strength or direction changes over time around the foreign substance (M) attached to the jig (100).

[0071] In one embodiment, the jig cleaning device (400) may further include a suction port (430) and a pressure reducer.

[0072] The above suction port (430) can suck up the foreign matter (M) separated from the jig (100).

[0073] The above pressure reducer can be connected to the suction port (430).

[0074] The above pressure reducer can provide negative pressure to the suction port (430).

[0075] The above jig cleaning method (S700) may further include a suction initiation process (S710) and a suction termination process (S750).

[0076] In the above suction initiation process (S710), the pressure reducer is operated so that suction can begin through the suction port (430).

[0077] In the above suction termination process (S750), the operation of the decompressor may be stopped, so that suction through the suction port (430) may be stopped.

[0078] In one embodiment, the jig cleaning device (400) may further include one or more nozzles (440) and a pump.

[0079] The above one or more nozzles (440) can spray air toward the foreign substance (M) or an area adjacent to the foreign substance (M).

[0080] The above pump may be connected to one or more nozzles (440).

[0081] The above pump can pressurize air and supply it to one or more nozzles (440).

[0082] The above jig cleaning method (S700) may further include an air injection start process (S720) and an air injection end process (S740).

[0083] In the above air injection start process (S720), the pump may be operated so that the one or more nozzles (440) may start to spray air toward the foreign substance (M) or an area adjacent to the foreign substance (M).

[0084] In the above air injection termination process (S740), the operation of the pump may be stopped, so that one or more nozzles (440) may stop spraying air.

[0085] In addition, in order to solve the above-described problem, the present invention provides an electrode manufacturing method (S900) including a laser processing process (S910), a first jig movement process (S920), a jig cleaning process (S940), and a second jig movement process (S960).

[0086] In the above laser processing process (S910), the laser irradiation unit (300) can irradiate laser to the electrode sheet (50) supported by each of the jigs (100) positioned at the first position (P1).

[0087] In the first jig movement process (S920), the jig movement unit (200) can move each jig (100) positioned at the first position (P1) to the second position (P2).

[0088] In the above jig cleaning process (S940), the jig cleaning device (400) can clean each jig (100) positioned at the second position (P2).

[0089] In the second jig movement process (S960), the jig movement unit (200) can move each jig (100) positioned at the second position (P2) to the first position (P1).

[0090] In one embodiment, the electrode manufacturing device (10) may further include a cleaning device moving unit.

[0091] The above cleaning device moving unit can move the jig cleaning device (400) forward toward each jig (100) positioned at the second position (P2) or retreat from each jig (100) positioned at the second position (P2).

[0092] The above electrode manufacturing method (S900) may further include a first cleaning device moving process (S930) and a second cleaning device moving process (S950).

[0093] In the above first cleaning device moving process (S930), the cleaning device moving unit can advance the jig cleaning device (400) toward each jig (100) positioned at the second position (P2).

[0094] In the second cleaning device moving process (S950), the cleaning device moving unit can move the jig cleaning device (400) back from each jig (100) positioned at the second position (P2).

[0095] The above first cleaning device movement process (S930) can be performed between the first jig movement process (S920) and the jig cleaning process (S940).

[0096] The above second cleaning device movement process (S950) can be performed between the above jig cleaning process (S940) and the second jig movement process (S960).

[0097] According to embodiments of the present invention, the jig cleaning device (400) may include a magnetic field generating unit (410) that generates a magnetic field (B) whose strength or direction changes over time around a foreign material (M) that is a conductor attached to the jig (100).

[0098] Accordingly, foreign matter (M) attached to the jig (100) can be easily removed at low cost with a simple configuration. In addition, manufacturing defects of the electrode can be prevented, the yield of the electrode can be improved, and the operating rate of the electrode manufacturing device (10) can be improved. In addition, since the foreign matter (M) can be removed in a non-contact manner, wear or damage to the jig (100) can be prevented, the lifespan of the jig (100) can be extended, and maintenance of the jig cleaning device (400) is easy.

[0099] According to embodiments of the present invention, an eddy current (I) whose strength or direction changes over time can be induced in the foreign body (M) by the magnetic field (B). A Lorentz force (F) whose strength or direction changes over time can be applied to the foreign body (M) by the interaction of the magnetic field (B) and the eddy current (I).

[0100] Accordingly, foreign matter (M) attached to the jig (100) can be effectively removed.

[0101] According to embodiments of the present invention, an eddy current (I) whose intensity or direction changes over time can be induced in the foreign body (M) by the magnetic field (B). The foreign body (M) can be heated by the eddy current (I).

[0102] Accordingly, foreign matter (M) attached to the jig (100) can be effectively removed.

[0103] According to embodiments of the present invention, the jig (100) can be used to support the electrode sheet (50) when processing the electrode sheet (50) with a laser. The foreign matter (M) can be formed when processing the electrode sheet (50) with a laser.

[0104] Accordingly, fumes (foreign matter (M)) generated when processing (e.g., notching) the electrode sheet (50) with a laser and adhered to the jig (100) can be effectively removed by the magnetic field generating unit (410). Accordingly, processing (e.g., notching) defects, damage, and contamination of the electrode sheet (50) can be prevented, and since the jig (100) can be reused, the cost of electrode manufacturing can be reduced.

[0105] According to embodiments of the present invention, the foreign substance (M) may include a diamagnetic material or a paramagnetic material.

[0106] Accordingly, even if the foreign matter (M) includes a diamagnetic or paramagnetic substance that reacts weakly to the magnetic force itself, the foreign matter (M) attached to the jig (100) can be effectively removed because the jig cleaning device (400) utilizes the change in magnetic force rather than the magnetic force itself.

[0107] According to embodiments of the present invention, the magnetic field generating unit (410) may be disposed adjacent to the jig (100) and may include one or more electromagnets (412) that generate the magnetic field (B) and a power supply unit that supplies power to the one or more electromagnets (412).

[0108] Accordingly, the strength or direction of the magnetic field (B) around the foreign substance (M) can be controlled, so that the foreign substance (M) attached to the jig (100) can be effectively removed.

[0109] According to embodiments of the present invention, the power supply unit can supply AC current to at least one of the electromagnets (412).

[0110] Accordingly, the strength or direction of the magnetic field (B) around the foreign body (M) may change over time.

[0111] According to embodiments of the present invention, the magnetic field generating unit (410) may include a plurality of electromagnets (412) spaced apart from each other. The power supply unit may supply power to the plurality of electromagnets (412).

[0112] Accordingly, the strength or direction of the magnetic field (B) around the foreign body (M) can change over time. For example, by alternately turning on or off a plurality of electromagnets (412) spaced apart from each other, the strength or direction of the magnetic field (B) around the foreign body (M) can change over time.

[0113] According to embodiments of the present invention, at least one of the electromagnets (412) can move or rotate.

[0114] Accordingly, the strength or direction of the magnetic field (B) around the foreign body (M) may change over time.

[0115] According to embodiments of the present invention, the power supply unit can supply direct current to a plurality of electromagnets (412) spaced apart from each other, or supply direct current to at least one electromagnet (412) that moves or rotates.

[0116] Accordingly, since the power supply unit supplies power to the electromagnets (412) that are spaced apart from each other or are moved or rotated, the strength or direction of the magnetic field (B) around the foreign body (M) may change over time even if the power supply unit supplies direct current.

[0117] According to embodiments of the present invention, each of the electromagnets (412) may include a coil (414) composed of a plurality of turns of wire and a core (416) inserted into or penetrating the central portion of the coil (414). The core (416) may include a ferromagnetic material having a high permeability.

[0118] Accordingly, the strength (magnetic flux density) of the magnetic field (B) increases, so the amount of change in magnetic force over time increases, so that foreign matter (M) can be effectively removed.

[0119] According to embodiments of the present invention, each of the electromagnets (412) may include a coil (414) composed of a plurality of turns of wire. The jig (100) may be inserted into the central portion of the coil (414) of at least one of the electromagnets (412) or may be positioned to penetrate the central portion.

[0120] Accordingly, since a foreign substance (M) can be located in the center of the coil (414) where the amount of magnetic force change over time is large, the foreign substance (M) attached to the jig (100) can be effectively removed.

[0121] According to embodiments of the present invention, the jig cleaning device (400) may further include a portion of the magnetic field generating unit (410) that generates the magnetic field (B) and a housing (420) that can surround the jig (100).

[0122] Accordingly, foreign substances (M), dust, etc. can be prevented from flying outward.

[0123] According to embodiments of the present invention, the housing (420) can shield the magnetic field (B).

[0124] Accordingly, foreign substances (M), dust, etc. can be prevented from flying outward.

[0125] According to embodiments of the present invention, the jig cleaning device (400) may further include a suction port (430) for sucking the foreign matter (M) separated from the jig (100) and a pressure reducer connected to the suction port (430) and providing negative pressure to the suction port (430).

[0126] Accordingly, foreign matter (M) attached to the jig (100) can be effectively removed. In addition, flying of dust, etc. can be prevented.

[0127] According to embodiments of the present invention, the jig cleaning device (400) may further include one or more nozzles (440) that spray air toward the foreign matter (M) or an area adjacent to the foreign matter (M), and a pump that is connected to the one or more nozzles (440) and pressurizes air and supplies it to the one or more nozzles (440).

[0128] Accordingly, foreign matter (M) attached to the jig (100) can be effectively removed.

[0129] According to embodiments of the present invention, the jig cleaning device (400) may further include a cooling unit for cooling the jig (100) or foreign matter (M).

[0130] Accordingly, accidents such as fire caused by heat generation of the jig (100) or foreign matter (M) can be prevented.

[0131] According to embodiments of the present invention, an electrode manufacturing device (10) may include one or more jigs (100) that can move to a first position (P1) and a second position (P2); a jig moving unit (200) that moves each of the jigs (100) to the first position (P1) and the second position (P2); a laser irradiation unit (300) that irradiates a laser to an electrode sheet (50); and a jig cleaning unit (400) that cleans each of the jigs (100). Each of the jigs (100) positioned at the first position (P1) faces the laser irradiation unit (300) with the electrode sheet (50) interposed therebetween and may support the electrode sheet (50). Each of the jigs (100) positioned at the second position (P2) may be adjacent to the magnetic field generating unit (410) of the jig cleaning device (400).

[0132] Accordingly, when the jig (100) moves to the first position (P1), the electrode sheet (50) can be laser processed (e.g., notched) using the jig (100), and when the jig (100) moves to the second position (P2), foreign matter (M) attached during laser processing can be effectively removed. Accordingly, since there is no need to separate and reinstall the jig (100) requiring cleaning from the electrode manufacturing device (10), the manufacturing cost of the electrode can be reduced and productivity can be improved.

[0133] In addition, by placing different jigs (100A, 100B) at the first position (P1) and the second position (P2), the electrode sheet (50) can be laser processed using the other jig (100A) while the foreign matter (M) attached to one jig (100B) is effectively removed. Accordingly, the electrode manufacturing process may not be interrupted while the jig (100) is being cleaned, so the operating rate of the electrode manufacturing device (10) can be improved, the productivity of the electrode can be improved, and the manufacturing cost of the electrode can be reduced.

[0134] In addition, since foreign matter (M) attached to the jig (100) is effectively removed by the jig cleaning device (400), manufacturing defects in the electrode can be prevented, the yield of the electrode can be improved, and the operating rate of the electrode manufacturing device (10) can be improved.

[0135] According to embodiments of the present invention, the electrode manufacturing device (10) may further include a cleaning device moving unit that moves the jig cleaning device (400) forward toward each jig (100) positioned at the second position (P2) or retreats from each jig (100) positioned at the second position (P2).

[0136] Accordingly, since the jig cleaning device (400) can advance toward the jig (100), the magnetic field generating unit (410) of the jig cleaning device (400) can be positioned sufficiently close to the jig (100) so that foreign matter (M) can be effectively removed. In addition, since the jig (100) can be accommodated inside the housing (420) of the jig cleaning device (400), foreign matter (M), dust, etc. can be prevented from flying to the outside.

[0137] In addition, since the jig cleaning device (400) can be retracted from the jig (100), the jig (100) can be moved to the first position (P1) and the second position (P2) without interference with the jig cleaning device (400).

[0138] According to embodiments of the present invention, the jig cleaning method (S700) may include a magnetic field generation process (S730) in which the magnetic field generation unit (410) generates a magnetic field (B) whose strength or direction changes over time around the foreign substance (M) attached to the jig (100).

[0139] Accordingly, foreign matter (M) attached to the jig (100) can be easily removed at low cost with a simple configuration. In addition, manufacturing defects of the electrode can be prevented, the yield of the electrode can be improved, and the operating rate of the electrode manufacturing device (10) can be improved. In addition, since the foreign matter (M) can be removed in a non-contact manner, wear or damage to the jig (100) can be prevented, the lifespan of the jig (100) can be extended, and maintenance of the jig cleaning device (400) is easy.

[0140] According to embodiments of the present invention, the jig cleaning device (400) may further include a suction port (430) for sucking the foreign matter (M) separated from the jig (100) and a pressure reducer connected to the suction port (430) and providing negative pressure to the suction port (430). The jig cleaning method (S700) may further include a suction start process (S710) in which the pressure reducer is operated and suction begins through the suction port (430); and a suction end process (S750) in which the operation of the pressure reducer is stopped and suction through the suction port (430) is stopped.

[0141] Accordingly, foreign matter (M) attached to the jig (100) can be effectively removed. In addition, flying of dust, etc. can be prevented.

[0142] According to embodiments of the present invention, the jig cleaning device (400) may further include one or more nozzles (440) that spray air toward the foreign matter (M) or an area adjacent to the foreign matter (M), and a pump that is connected to the one or more nozzles (440) and pressurizes air and supplies it to the one or more nozzles (440). The jig cleaning method (S700) may further include an air spray start process (S720) in which the pump is operated so that the one or more nozzles (440) start spraying air toward the foreign matter (M) or an area adjacent to the foreign matter (M); and an air spray end process (S740) in which the pump is stopped so that the one or more nozzles (440) stop spraying air.

[0143] Accordingly, foreign matter (M) attached to the jig (100) can be effectively removed.

[0144] According to embodiments of the present invention, the electrode manufacturing method (S900) includes: a laser processing process (S910) in which the laser irradiation unit (300) irradiates a laser to the electrode sheet (50) supported by each of the jigs (100) positioned at the first position (P1); a first jig moving process (S920) in which the jig moving unit (200) moves each of the jigs (100) positioned at the first position (P1) to the second position (P2); a jig cleaning process (S940) in which the jig cleaning device (400) cleans each of the jigs (100) positioned at the second position (P2); And the jig moving unit (200) may include a second jig moving process (S960) for moving each jig (100) positioned at the second position (P2) to the first position (P1).

[0145] Accordingly, since there is no need to separate and reinstall the jig (100) requiring cleaning from the electrode manufacturing device (10), the manufacturing cost of the electrode can be reduced and the productivity can be improved. In addition, if different jigs (100A, 100B) are arranged at the first position (P1) and the second position (P2), the electrode manufacturing process can be uninterrupted while the jig (100) is being cleaned, so the operating rate of the electrode manufacturing device (10) can be improved, the productivity of the electrode can be improved, and the manufacturing cost of the electrode can be reduced. In addition, since foreign substances (M, fume) attached to the jig (100) are effectively removed, manufacturing defects of the electrode can be prevented, the yield of the electrode can be improved, and the operating rate of the electrode manufacturing device (10) can be improved.

[0146] According to embodiments of the present invention, the electrode manufacturing device (10) may further include a cleaning device moving unit that moves the jig cleaning device (400) forward toward each of the jigs (100) positioned at the second positions (P2) or retreats from each of the jigs (100) positioned at the second positions (P2). The electrode manufacturing method (S900) may further include a first cleaning device moving process (S930) in which the cleaning device moving unit moves the jig cleaning device (400) forward toward each of the jigs (100) positioned at the second positions (P2); and a second cleaning device moving process (S950) in which the cleaning device moving unit retreats the jig cleaning device (400) from each of the jigs (100) positioned at the second positions (P2). The first cleaning device movement process (S930) may be performed between the first jig movement process (S920) and the jig cleaning process (S940). The second cleaning device movement process (S950) may be performed between the jig cleaning process (S940) and the second jig movement process (S960).

[0147] Accordingly, since the jig cleaning device (400) can advance toward the jig (100), the magnetic field generating unit (410) of the jig cleaning device (400) can be positioned sufficiently close to the jig (100) so that foreign matter (M) can be effectively removed. In addition, since the jig (100) can be accommodated inside the housing (420) of the jig cleaning device (400), foreign matter (M), dust, etc. can be prevented from flying to the outside.

[0148] In addition, since the jig cleaning device (400) can be retracted from the jig (100), the jig (100) can be moved to the first position (P1) and the second position (P2) without interference with the jig cleaning device (400).

[0149] In addition to the effects described above, specific effects of the present invention are described below while explaining specific details for carrying out the invention.

[0150] FIG. 1 is a schematic drawing of an electrode manufacturing device according to one embodiment of the present invention.

[0151] Figure 2 is an enlarged view of a portion of Figure 1.

[0152] Figures 3 and 4 are diagrams showing the magnetic field, eddy current, and Lorentz force acting on or generated by a foreign body attached to the jig of Figures 1 and 2.

[0153] Figure 5 is a flowchart of a jig cleaning method according to one embodiment of the present invention.

[0154] Figure 6 is a flowchart of an electrode manufacturing method according to one embodiment of the present invention.

[0155] [Explanation of symbols]

[0156] 10: Electrode manufacturing device 50: Electrode sheet

[0157] 100: Jig M: Foreign body

[0158] 100A: 1st jig 100B: 2nd jig

[0159] 110: First part 120: Second part

[0160] 200: Zigzag Movement

[0161] P1: First position P2: Second position

[0162] 300: Laser irradiation unit

[0163] 400: Jig cleaning device

[0164] 410: Magnetic field generator 412: Electromagnet

[0165] 414: Coil 416: Core

[0166] B: Magnetic field I: Eddy current

[0167] F: Lorenz force

[0168] 420: Housing 430: Intake

[0169] 440: Nozzle

[0170] The above-described objects, features, and advantages will be described in detail below with reference to the accompanying drawings, so that those skilled in the art can easily practice the technical idea of ​​the present invention. In describing the present invention, if it is determined that a detailed description of known technologies related to the present invention may unnecessarily obscure the gist of the present invention, a detailed description thereof will be omitted. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to indicate the same or similar components.

[0171] Although terms like "first" and "second" are used to describe various components, these components are not limited by these terms. These terms are used merely to distinguish one component from another, and unless otherwise specified, a "first" component may also be a "second" component.

[0172] Throughout the specification, unless otherwise specifically stated, each element may be singular or plural.

[0173] Hereinafter, the phrase "any configuration is placed on (or below)" a component or "on (or below)" a component may mean that any configuration is placed in contact with the upper surface (or lower surface) of said component, and that other configurations may be interposed between said component and any configuration placed on (or below) said component.

[0174] Additionally, when it is described that a component is "connected," "coupled," or "connected" to another component, it should be understood that the components may be directly connected or connected to one another, but that other components may also be "interposed" between the components, or that each component may be "connected," "coupled," or "connected" through another component.

[0175] As used herein, singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as "consisting of" or "comprising" should not necessarily be construed to include all of the components or steps described in the specification, and should be construed to mean that some of the components or steps may not be included, or that additional components or steps may be included.

[0176] FIG. 1 is a schematic diagram of an electrode manufacturing device according to one embodiment of the present invention. FIG. 2 is an enlarged view of a portion of FIG. 1. FIG. 3 and FIG. 4 are diagrams showing magnetic fields, eddy currents, and Lorenz forces acting on or generated by foreign substances attached to the jigs of FIG. 1 and FIG. 2. FIG. 5 is a flowchart of a jig cleaning method according to one embodiment of the present invention. FIG. 6 is a flowchart of an electrode manufacturing method according to one embodiment of the present invention.

[0177] [Electrode manufacturing device]

[0178] Referring to FIGS. 1 and 2, an electrode manufacturing device (10) according to one embodiment may include one or more jigs (100), a jig moving unit (200), a laser irradiation unit (300), and a jig cleaning device (400). The electrode manufacturing device (10) may further include a cleaning device moving unit (not shown).

[0179] [Jig, Foreign Object]

[0180] Each jig (100) can be used to support the electrode sheet (50) when processing the electrode sheet (50) with a laser. For example, each jig (100) can be a pattern jig for supporting the electrode sheet (50) when forming a pattern by notching the electrode sheet (50) (e.g., the uncoated portion of the electrode sheet) with a laser.

[0181] Each jig (100) may include a first portion (110) and a second portion (120) spaced apart from each other by a predetermined interval so that a laser that processes the electrode sheet (50) passes between them.

[0182] A foreign substance (M) may be attached to each jig (100). For example, the foreign substance (M) may be attached to the tip of the first portion (110) and the second portion (120) of each jig (100). The foreign substance (M) may be a conductor.

[0183] A foreign substance (M) may be formed when processing an electrode sheet (50) with a laser. For example, the foreign substance (M) may be formed when fume generated when processing an electrode sheet (50) with a laser adheres to each jig (100). Here, the fume may refer to high-temperature dust or vapor generated during laser processing.

[0184] Accordingly, fumes (foreign matter (M)) generated when processing (e.g., notching) the electrode sheet (50) with a laser and adhered to the jig (100) can be effectively removed by the magnetic field generating unit (410) described below. Accordingly, processing (e.g., notching) defects, damage, and contamination of the electrode sheet (50) can be prevented, and since the jig (100) can be reused, the cost of manufacturing the electrode can be reduced.

[0185] The foreign matter (M) may include a diamagnetic material or a paramagnetic material. For example, when a negative electrode sheet (50) including a current collector made of copper (diamagnetic material) is processed with a laser, the foreign matter (M) attached to the jig (100) may include copper (diamagnetic material). In addition, when a positive electrode sheet (50) including a current collector made of aluminum (paramagnetic material) is processed with a laser, the foreign matter (M) attached to the jig (100) may include aluminum (paramagnetic material).

[0186] Accordingly, even if the foreign matter (M) includes a diamagnetic or paramagnetic substance that reacts weakly to the magnetic force itself, the foreign matter (M) attached to the jig (100) can be effectively removed because the jig cleaning device (400) uses a change in magnetic force rather than the magnetic force itself, as described below.

[0187] Each jig (100) can be moved to a first position (P1) and a second position (P2) by a jig moving part (200) (Fig. 1).

[0188] Each jig (100) positioned at the first position (P1) faces the laser irradiation unit (300) with the electrode sheet (50) interposed therebetween and can support the electrode sheet (50). Each jig (100) positioned at the second position (P2) can be adjacent to the magnetic field generating unit (410) of the jig cleaning device (400).

[0189] Accordingly, when the jig (100) moves to the first position (P1), the electrode sheet (50) can be laser processed (e.g., notched) using the jig (100), and when the jig (100) moves to the second position (P2), foreign matter (M) attached during laser processing can be effectively removed. Accordingly, since there is no need to separate and reinstall the jig (100) requiring cleaning from the electrode manufacturing device (10), the manufacturing cost of the electrode can be reduced and productivity can be improved.

[0190] In addition, by placing different jigs (100A, 100B) at the first position (P1) and the second position (P2), the electrode sheet (50) can be laser processed using the other jig (100A) while the foreign matter (M) attached to one jig (100B) is effectively removed. Accordingly, the electrode manufacturing process may not be interrupted while the jig (100) is being cleaned, so the operating rate of the electrode manufacturing device (10) can be improved, the productivity of the electrode can be improved, and the manufacturing cost of the electrode can be reduced.

[0191] In addition, since foreign matter (M) attached to the jig (100) is effectively removed by the jig cleaning device (400), manufacturing defects in the electrode can be prevented, the yield of the electrode can be improved, and the operating rate of the electrode manufacturing device (10) can be improved.

[0192] [Zigzag Movement]

[0193] The jig moving unit (200) can be combined with one or more jigs (100). The jig moving unit (200) can move each jig (100) to a first position (P1) and a second position (P2). The jig moving unit (200) can rotate each jig (100) to the first position (P1) and the second position (P2) (Fig. 1).

[0194] For example, the jig moving unit (200) can be combined with a plurality of jigs (100A, 100B). The jig moving unit (200) can move each jig (100) to a first position (P1) and a second position (P2) (Fig. 1).

[0195] When each jig (100) is positioned at the first position (P1), the electrode sheet (50) can advance toward each jig (100) or each jig (100) or jig moving unit (200) can advance toward the electrode sheet (50). For example, in FIG. 1, the jig moving unit (200) can move to the left. Accordingly, each jig (100) can come into contact with the electrode sheet (50) and support the electrode sheet (50).

[0196] Meanwhile, so that each jig (100) can be moved by the jig moving unit (200), the electrode sheet (50) can be moved back from each jig (100) or each jig (100) or jig moving unit (200) can be moved back from the electrode sheet (50). For example, in FIG. 1, the jig moving unit (200) can be moved to the right. Accordingly, each jig (100) can be moved without interfering with the electrode sheet (50).

[0197] [Laser irradiation unit, cleaning device moving unit]

[0198] The laser irradiation unit (300) can irradiate a laser to the electrode sheet (50).

[0199] The cleaning device moving unit (not shown) can move the jig cleaning device (400) described below forward toward each jig (100) positioned at the second position (P2) or retreat from each jig (100) positioned at the second position (P2). For example, in FIG. 1, the cleaning device moving unit can move the jig cleaning device (400) to the left (advance toward the jig) or to the right (retreat from the jig).

[0200] Accordingly, since the jig cleaning device (400) can advance toward the jig (100), the magnetic field generating unit (410) of the jig cleaning device (400) can be positioned sufficiently close to the jig (100) so that foreign matter (M) can be effectively removed. In addition, since the jig (100) can be accommodated inside the housing (420) of the jig cleaning device (400), foreign matter (M), dust, etc. can be prevented from flying to the outside.

[0201] In addition, since the jig cleaning device (400) can be retracted from the jig (100), the jig (100) can be moved to the first position (P1) and the second position (P2) without interference with the jig cleaning device (400).

[0202] [Jig Cleaning Device]

[0203] The jig cleaning device (400) may include a magnetic field generating unit (410). The jig cleaning device (400) may further include a housing (420). The jig cleaning device (400) may further include a suction port (430) and a pressure reducer (not shown). The jig cleaning device (400) may further include one or more nozzles (440) and a pump (not shown). The jig cleaning device (400) may further include a cooling unit (not shown). The jig cleaning device (400) may clean each jig (100) positioned at the second position. Hereinafter, the jig (100) may refer to each jig (100) positioned at the second position (P2).

[0204] The magnetic field generating unit (410) can generate a magnetic field (B) whose strength or direction changes over time around a foreign body (M), which is a conductor attached to a jig (100) (Fig. 2).

[0205] Accordingly, foreign matter (M) attached to the jig (100) can be easily removed at low cost with a simple configuration. In addition, manufacturing defects of the electrode can be prevented, the yield of the electrode can be improved, and the operating rate of the electrode manufacturing device (10) can be improved. In addition, since the foreign matter (M) can be removed in a non-contact manner, wear or damage to the jig (100) can be prevented, the lifespan of the jig (100) can be extended, and maintenance of the jig cleaning device (400) is easy.

[0206] Referring further to FIGS. 3 and 4, an eddy current (I) whose intensity or direction changes over time can be induced in the foreign body (M) by the magnetic field (B). That is, the direction of the eddy current (I) can be different when the intensity of the magnetic field gradually increases (FIG. 3) and when the intensity of the magnetic field gradually decreases (FIG. 4). The intensity or direction of the eddy current (I) can be determined by Lenz's law.

[0207] In addition, the interaction between the magnetic field (B) and the eddy current (I) may cause a Lorentz force (F) whose strength or direction changes over time to act on the foreign body (M) (Figs. 3 and 4). Accordingly, the foreign body (M) may vibrate due to the Lorentz force (F). In addition, the foreign body (M) may be heated by the eddy current (I).

[0208] Accordingly, foreign matter (M) attached to the jig (100) can be effectively removed.

[0209] The magnetic field generating unit (410) may include one or more electromagnets (412) and a power supply unit (not shown).

[0210] Each electromagnet (412) can be placed adjacent to the jig (100). Each electromagnet (412) can generate the magnetic field (B).

[0211] Accordingly, the strength or direction of the magnetic field (B) around the foreign substance (M) can be controlled, so that the foreign substance (M) attached to the jig (100) can be effectively removed.

[0212] In one embodiment, the magnetic field generating unit (410) may include a plurality of electromagnets (412), and the plurality of electromagnets (412) may be spaced apart from each other.

[0213] Accordingly, the strength or direction of the magnetic field (B) around the foreign body (M) can change over time. For example, by alternately turning on or off a plurality of electromagnets (412) spaced apart from each other, the strength or direction of the magnetic field (B) around the foreign body (M) can change over time.

[0214] In another embodiment, at least one electromagnet (412) can move or rotate.

[0215] Accordingly, the strength or direction of the magnetic field (B) around the foreign body (M) may change over time.

[0216] Each electromagnet (412) may include a coil (414). Each electromagnet (412) may further include a core (416) (FIG. 2).

[0217] The coil (414) may be composed of a conductor wound multiple times.

[0218] The core (416) may be inserted into the central portion of the coil (414) or may be disposed through the central portion. The core (416) may include a ferromagnetic material having a high permeability. For example, the core (416) may be composed of a material including iron.

[0219] Accordingly, the strength (magnetic flux density) of the magnetic field (B) increases, so the amount of change in magnetic force over time increases, so that foreign matter (M) can be effectively removed.

[0220] In one embodiment, the jig (100) may be inserted into or positioned through the central portion of the coil (414) of at least one electromagnet (412), unlike the drawing. For example, the jig (100) may be positioned in the central portion of the coil (414) instead of the core (416).

[0221] Accordingly, since a foreign substance (M) can be located in the center of the coil (414) where the amount of magnetic force change over time is large, the foreign substance (M) attached to the jig (100) can be effectively removed.

[0222] In this case, when the jig (100) is inserted into the central portion of the coil (414) or positioned through the central portion, the overall cross-sectional shape formed by the coil (414) wound multiple times may correspond to the cross-sectional shape of the jig (100). For example, the overall cross-sectional shape formed by the coil (414) wound multiple times may be a square or rectangle corresponding to the cross-sectional shape of the jig (100).

[0223] A power supply unit (not shown) can supply power to one or more electromagnets (412).

[0224] The power supply unit can supply alternating current to at least one electromagnet (412).

[0225] Accordingly, the strength or direction of the magnetic field (B) around the foreign body (M) may change over time.

[0226] The power supply unit can supply direct current to a plurality of electromagnets (412) spaced apart from each other or supply direct current to at least one of the electromagnets (412) that moves or rotates.

[0227] Accordingly, since the power supply unit supplies power to the electromagnets (412) that are spaced apart from each other or are moved or rotated, the strength or direction of the magnetic field (B) around the foreign body (M) may change over time even if the power supply unit supplies direct current.

[0228] Meanwhile, the magnetic field generating unit (410) may include a permanent magnet instead of an electromagnet (412) and a power supply unit. The permanent magnet may be repeatedly moved or rotated to change the strength or direction of the magnetic field over time.

[0229] The housing (420) can surround the part of the magnetic field generating unit (410) that generates the magnetic field (B) and the jig (100). Here, the part of the magnetic field generating unit (410) that generates the magnetic field (B) can be an electromagnet (412). The housing (420) can shield the magnetic field (B).

[0230] Accordingly, foreign substances (M), dust, etc. can be prevented from flying outward.

[0231] The suction port (430) can suck up foreign matter (M) separated from the jig (100). The suction port (430) can be formed in the housing (420).

[0232] A pressure reducer (not shown) may be connected to the suction port (430). The pressure reducer may provide negative pressure to the suction port (430).

[0233] Accordingly, foreign matter (M) attached to the jig (100) can be effectively removed. In addition, flying of dust, etc. can be prevented.

[0234] One or more nozzles (440) can spray air toward the foreign body (M) or an area adjacent to the foreign body (M). The one or more nozzles (440) can be spaced apart from each other. The one or more nozzles (440) can be positioned inside the housing (420).

[0235] A pump (not shown) may be connected to one or more nozzles (440). The pump may pressurize air and supply it to one or more nozzles (440).

[0236] Accordingly, foreign matter (M) attached to the jig (100) can be effectively removed.

[0237] A cooling unit (not shown) may be installed in the housing (420). The cooling unit may cool the jig (100) or the foreign body (M). For example, the cooling unit may include a blower and / or a heat sink.

[0238] Accordingly, accidents such as fire caused by heat generation of the jig (100) or foreign matter (M) can be prevented.

[0239] [Jig Cleaning Method]

[0240] Referring to Fig. 5, the jig cleaning method (S700) may include a magnetic field generation process (S730). The jig cleaning method (S700) may further include a suction initiation process (S710) and a suction termination process (S750). The jig cleaning method (S700) may further include an air injection initiation process (S720) and an air injection termination process (S740).

[0241] In the suction initiation process (S710), the pressure reducer is activated so that suction can begin through the suction port (430).

[0242] The suction initiation process (S710) can be performed before the magnetic field generation process (S730). Accordingly, foreign substances (M), dust, etc. can be prevented from flying outward.

[0243] In the air injection start process (S720), the pump may be started so that one or more nozzles (440) may start to spray air toward the foreign substance (M) or an area adjacent to the foreign substance (M).

[0244] The air injection initiation process (S720) can be performed after the suction initiation process (S710). Thus, foreign substances (M), dust, etc. can be prevented from flying outward. The air injection initiation process (S720) can be performed before the magnetic field generation process (S730). Thus, foreign substances (M) attached to the jig (100) can be effectively removed.

[0245] In the magnetic field generation process (S730), the magnetic field generation unit (410) can generate a magnetic field (B) whose strength or direction changes over time around a foreign substance (M) attached to the jig (100).

[0246] In this way, the jig cleaning method (S700) may include a magnetic field generation process (S730). Accordingly, foreign matter (M) attached to the jig (100) can be easily removed at low cost with a simple configuration. In addition, manufacturing defects of the electrode can be prevented, the yield of the electrode can be improved, and the operating rate of the electrode manufacturing device (10) can be improved. In addition, since the foreign matter (M) can be removed in a non-contact manner, wear or damage to the jig (100) can be prevented, the lifespan of the jig (100) can be extended, and maintenance of the jig cleaning device (400) is easy.

[0247] In the air injection termination process (S740), the pump may be stopped, causing one or more nozzles (440) to stop spraying air. The air injection termination process (S740) may be performed after the magnetic field generation process (S730). Thus, foreign substances (M) attached to the jig (100) may be effectively removed. The air injection termination process (S740) may be performed before the suction termination process (S750). Thus, foreign substances (M), dust, etc. may be prevented from being scattered to the outside.

[0248] In this way, the jig cleaning method (S700) may include a suction initiation process (S710) and a suction termination process (S750). Accordingly, foreign matter (M) attached to the jig (100) can be effectively removed.

[0249] In the suction termination process (S750), the operation of the decompressor may be stopped, so that suction through the suction port (430) may be stopped.

[0250] The suction termination process (S750) can be performed after the magnetic field generation process (S730). Accordingly, foreign substances (M), dust, etc. can be prevented from flying outward.

[0251] In this way, the jig cleaning method (S700) may include a suction initiation process (S710) and a suction termination process (S750). Accordingly, foreign substances (M) attached to the jig (100) can be effectively removed. In addition, the scattering of dust and the like can be prevented.

[0252] [Electrode manufacturing method]

[0253] Referring to FIG. 6, an electrode manufacturing method (S900) according to one embodiment of the present invention may include a laser processing process (S910), a first jig movement process (S920), a jig cleaning process (S940), and a second jig movement process (S960). The electrode manufacturing method (S900) may further include a first cleaning device movement process (S930) and a second cleaning device movement process (S950).

[0254] In the laser processing process (S910), the laser irradiation unit (300) can irradiate a laser to the electrode sheet (50) supported by each jig (100) positioned at the first position (P1).

[0255] The laser processing process (S910) may be performed simultaneously with the jig cleaning process (S940) for cleaning each jig (100B) positioned at the second position (P2). The laser processing process (S910) may be stopped when a preset time elapses or a preset condition (e.g., a condition in which the length of the electrode sheet (50) to be laser processed exceeds a predetermined length) is met.

[0256] The first jig movement process (S920) can be performed after the laser processing process (S910) is stopped.

[0257] In the first jig movement process (S920), the jig movement unit (200) can move each jig (100) positioned at the first position (P1) to the second position (P2).

[0258] The first cleaning device movement process (S930) can be performed between the first jig movement process (S920) and the jig cleaning process (S940).

[0259] In the first cleaning device moving process (S930), the cleaning device moving unit can advance the jig cleaning device (400) toward each jig (100) positioned at the second position (P2).

[0260] The jig cleaning process (S940) may be performed after the first jig movement process (S920). The jig cleaning process (S940) may be performed after the first cleaning device movement process (S930).

[0261] In the jig cleaning process (S940), the jig cleaning device (400) can clean each jig (100) positioned at the second position (P2). The jig cleaning process (S940) can correspond to the jig cleaning method (S700) described above.

[0262] The jig cleaning process (S940) can be performed simultaneously with the laser processing process (S910) using each jig (100A) positioned at the first position (P1). The jig cleaning process (S940) can be terminated when a preset time elapses or a preset condition is met.

[0263] The second cleaning device movement process (S950) can be performed between the jig cleaning process (S940) and the second jig movement process (S960).

[0264] In the second cleaning device moving process (S950), the cleaning device moving unit can move the jig cleaning device (400) back from each jig (100) positioned at the second position (P2).

[0265] In this way, the electrode manufacturing method (S900) may include a first cleaning device moving process (S930) and a second cleaning device moving process (S950). Accordingly, since the jig cleaning device (400) can advance toward the jig (100), the magnetic field generating unit (410) of the jig cleaning device (400) can be positioned sufficiently close to the jig (100) so that foreign substances (M) can be effectively removed. In addition, since the jig (100) can be accommodated inside the housing (420) of the jig cleaning device (400), foreign substances (M), dust, etc. can be prevented from flying to the outside.

[0266] In addition, since the jig cleaning device (400) can be retracted from the jig (100), the jig (100) can be moved to the first position (P1) and the second position (P2) without interference with the jig cleaning device (400).

[0267] The second jig movement process (S960) may be performed after the jig cleaning process (S940). The second jig movement process (S960) may be performed after the second cleaning device movement process (S950).

[0268] In the second jig movement process (S960), the jig movement unit (200) can move each jig (100) positioned at the second position (P2) to the first position (P1).

[0269] The second jig movement process (S960) can be performed simultaneously with the first jig movement process (S920) for another jig (100).

[0270] In this way, the electrode manufacturing method (S900) may include a laser processing process (S910), a first jig movement process (S920), a jig cleaning process (S940), and a second jig movement process (S960). Accordingly, since there is no need to separate and reinstall the jig (100) requiring cleaning from the electrode manufacturing device (10), the manufacturing cost of the electrode may be reduced and productivity may be improved. In addition, if different jigs (100A, 100B) are arranged at the first position (P1) and the second position (P2), the electrode manufacturing process may not be interrupted while the jig (100) is being cleaned, so the operating rate of the electrode manufacturing device (10) may be improved, the productivity of the electrode may be improved, and the manufacturing cost of the electrode may be reduced. In addition, since foreign matter (M, fume) attached to the jig (100) is effectively removed, manufacturing defects in the electrode can be prevented, the yield of the electrode can be improved, and the operating rate of the electrode manufacturing device (10) can be improved.

[0271] It should be understood that the above-described embodiments are illustrative in all respects and not restrictive, and the scope of the present invention will be determined by the claims that follow, rather than by the detailed description set forth above. Furthermore, the meaning and scope of the claims that follow, as well as all possible modifications and variations derived from their equivalent concepts, should be construed as encompassing the scope of the present invention.

[0272] Although the present invention has been described with reference to the drawings exemplified above, it is to be understood that the present invention is not limited to the embodiments and drawings disclosed herein, and that various modifications may be made by those skilled in the art within the scope of the technical idea of ​​the present invention. Furthermore, even if the operational effects according to the configuration of the present invention have not been explicitly described while describing the embodiments of the present invention, it is natural that the effects predictable by the corresponding configuration should also be acknowledged.

Claims

1. Including a magnetic field generating unit (410) that generates a magnetic field (B) whose strength or direction changes over time around a foreign body (M) that is a conductor attached to a jig (100). Jig cleaning device.

2. In claim 1, An eddy current (I) whose intensity or direction changes over time is induced in the foreign body (M) by the magnetic field (B). A jig cleaning device in which a Lorentz force (F), the strength or direction of which changes over time, is applied to the foreign material (M) by the interaction of the magnetic field (B) and the eddy current (I).

3. In claim 1 or claim 2, The above jig (100) is used to support the electrode sheet (50) when processing the electrode sheet (50) with a laser. The above foreign matter (M) is formed when the electrode sheet (50) is processed with a laser, a jig cleaning device.

4. In any one of claims 1 to 3, A jig cleaning device wherein the above foreign substance (M) contains a diamagnetic material or a paramagnetic material.

5. In any one of claims 1 to 4, A jig cleaning device, wherein the magnetic field generating unit (410) can be arranged adjacent to the jig (100) and includes one or more electromagnets (412) that generate the magnetic field (B) and a power supply unit that supplies power to the one or more electromagnets (412).

6. In claim 5, A jig cleaning device, wherein the power supply unit supplies alternating current to at least one of the electromagnets (412).

7. In claim 5, The above magnetic field generating unit (410) includes a plurality of electromagnets (412) spaced apart from each other, The above power supply unit is a jig cleaning device that supplies power to the plurality of electromagnets (412).

8. In claim 5, A jig cleaning device, wherein at least one of the above electromagnets (412) moves or rotates.

9. In claim 7 or claim 8, The above power supply unit is a jig cleaning device that supplies direct current to a plurality of electromagnets (412) spaced apart from each other or supplies direct current to at least one electromagnet (412) that moves or rotates.

10. In any one of claims 5 to 9, Each of the above electromagnets (412) includes a coil (414) composed of a plurality of turns of wire and a core (416) inserted into the center of the coil (414) or disposed through the center of the coil (414). A jig cleaning device, wherein the core (416) comprises a ferromagnetic material having a high investment rate.

11. In any one of claims 5 to 9, Each of the above electromagnets (412) includes a coil (414) composed of a plurality of turns of wire, A jig cleaning device in which the above jig (100) can be inserted into the central portion of the coil (414) of at least one electromagnet (412) or positioned through the central portion.

12. In any one of claims 1 to 11, A jig cleaning device further comprising a section generating the magnetic field (B) among the magnetic field generating sections (410) and a housing (420) capable of surrounding the jig (100).

13. In claim 12, The above housing (420) is a jig cleaning device that shields the magnetic field (B).

14. In any one of claims 1 to 13, A jig cleaning device further comprising a suction port (430) for sucking the foreign matter (M) separated from the jig (100) and a pressure reducer connected to the suction port (430) and providing negative pressure to the suction port (430).

15. In any one of claims 1 to 14, A jig cleaning device further comprising one or more nozzles (440) for spraying air toward the foreign substance (M) or an area adjacent to the foreign substance (M), and a pump connected to the one or more nozzles (440) for pressurizing air and supplying it to the one or more nozzles (440).

16. In any one of claims 1 to 15, A jig cleaning device further comprising a cooling unit for cooling the jig (100) or foreign matter (M).

17. In an electrode manufacturing device (10) having a jig cleaning device (400) according to any one of claims 1 to 16, One or more jigs (100) movable to a first position (P1) and a second position (P2); A jig moving unit (200) that moves each of the above jigs (100) to the first position (P1) and the second position (P2); A laser irradiation unit (300) that irradiates a laser to an electrode sheet (50); and Each jig (100) includes a jig cleaning device (400) for cleaning the jig, Each of the jigs (100) positioned at the first position (P1) faces the laser irradiation unit (300) with the electrode sheet (50) interposed therebetween and can support the electrode sheet (50). Each of the jigs (100) positioned at the second position (P2) is adjacent to the magnetic field generating unit (410) of the jig cleaning device (400). Electrode manufacturing device.

18. In claim 17, An electrode manufacturing device further comprising a cleaning device moving unit that moves the jig cleaning device (400) forward toward each jig (100) positioned at the second position (P2) or retreats from each jig (100) positioned at the second position (P2).

19. In a jig cleaning method (S700) using a jig cleaning device (400) of any one of claims 1 to 13 and 16, The magnetic field generating unit (410) includes a magnetic field generating process (S730) in which the magnetic field (B) whose strength or direction changes over time is generated around the foreign body (M) attached to the jig (100). How to clean a jig.

20. In claim 19, The jig cleaning device (400) further includes a suction port (430) for sucking the foreign matter (M) separated from the jig (100), a pressure reducer connected to the suction port (430) and providing negative pressure to the suction port (430), one or more nozzles (440) for spraying air toward the foreign matter (M) or an area adjacent to the foreign matter (M), and a pump connected to the one or more nozzles (440) for pressurizing air and supplying it to the one or more nozzles (440). The suction start process (S710) in which the above pressure reducer is operated and suction begins through the suction port (430); An air injection initiation process (S720) in which the pump is operated and the one or more nozzles (440) start to inject air toward the foreign substance (M) or an area adjacent to the foreign substance (M); An air injection termination process (S740) in which the operation of the above pump is stopped and the one or more nozzles (440) stop spraying air; and A jig cleaning method further comprising a suction termination process (S750) in which the operation of the above decompressor is stopped and suction through the suction port (430) is stopped.

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