DEVICE FOR REMOVING SCRAPS AFTER LASER NOTIFICATION OF FILM FORMING UNIT OF SECONDARY BATTERY FOR ELECTRIC VEHICLE

Abstract

The present invention relates to a device for removing scraps after laser notching of a film forming unit of a secondary battery for an electric vehicle, and to completing a jelly roll in which flags are not overlapped by clearly removing particles generated during notching jointly with accurately separating and discharging a scram part by ultraprecision injection through multiple air nozzles when forming a flag shape by notching an uncoated part without coating of a cathode and an anode in a trapezoidal shape by a laser in a secondary battery for an electric vehicle configured by stacking an electrode roll in a circular box.

The present invention is configured to include a winding unit 1 and rollers 2 to 4 unrolling and transporting a rolled electrode, a laser notching unit 5 making a flag shape by notching to an uncoated portion of the electrode transported through the roller 4, an air nozzle unit 7 for separating discharging a scrap 10 by injecting air to the uncoated portion of the electrode notched by the laser notching unit 5, and a collection unit 8 for strongly suctioning and discharging the scrap separated and discharged by the air nozzle unit 7 by air.

Claims

1. A device for removing scraps after laser notching of a film forming unit of a secondary battery for an electric vehicle, the device comprising: a winding unit and rollers unrolling and transporting a rolled electrode; a laser notching unit making a flag shape by notching to an uncoated portion of the electrode transported through the roller; an air nozzle unit for separating discharging a scrap by injecting air to the uncoated portion of the electrode notched by the laser notching unit; and a collection unit for strongly suctioning the scrap separated and discharged by the air nozzle unit by air suction.

2. The device for removing scraps after laser notching of a film forming unit of a secondary battery for an electric vehicle of claim 1, wherein the air nozzle unit has multiple air nozzles of 0.2Φ, 0.4Φ, and 0.6Φ and is set so that air injection of a front end is set to be gradually stronger weak-medium-strong.

3. The device for removing scraps after laser notching of a film forming unit of a secondary battery for an electric vehicle of claim 1, wherein the air nozzle unit is configured to have multiple knobs for adjusting the intensity and the pressure of the air to set the intensity and the pressure of the air by adjusting the knob.

4. The device for removing scraps after laser notching of a film forming unit of a secondary battery for an electric vehicle of claim 1, wherein the air nozzle unit is configured to have a horizontal movement unit and a vertical movement unit for horizontal or vertical movement integrally installed therein, and automatically move by manual adjustment or by a motor, an air cylinder, or a solenoid.

Description

DESCRIPTION OF DRAWINGS

[0025] FIG. 1 is a diagram for describing an overall operation state of the present invention.

[0026] FIG. 2 is a perspective view illustrating a state in which scraps are separated and discharged by an air nozzle after laser notching of a device for removing scraps after laser notching of a secondary battery for an electric vehicle according to the present invention.

[0027] FIG. 3 is a perspective view and a cross-sectional view of an air nozzle unit according to the present invention.

[0028] FIG. 4A, FIG. 4B and FIG. 5 illustrate a secondary battery which does not perform scrap air separation and a secondary battery which performs the scrap air separation.

MODES FOR THE INVENTION

[0029] Hereinafter, an embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

[0030] FIG. 1 is a diagram for describing an overall operation state of the present invention, FIG. 2 is a perspective view illustrating a state in which scraps are separated and discharged by an air nozzle after laser notching of a device for removing scraps after laser notching of a secondary battery for an electric vehicle according to the present invention, and FIG. 3 is a perspective view and a cross-sectional view of an air nozzle unit according to the present invention, and the air nozzle unit is constituted by a winding unit 1 and rollers 2 to 4 unrolling and transporting a rolled electrode, a laser notching unit 5 making a flag shape by notching to an uncoated portion of the electrode transported through the roller 4, an air nozzle unit 7 for separating discharging a scrap 10 by injecting air to the uncoated portion of the electrode notched by the laser notching unit 5, and a collection unit 8 for collecting and discharging the scrap 10 separated and discharged by the air nozzle unit 7 by an air suction.

[0031] However, the collection unit 8 is set to strongly suction and discharge the scrap by the air suction.

[0032] The air nozzle unit 7 is configured to have multiple air nozzles 7d, 7e, and 7f of 0.2Φ, 0.4Φ, and 0.6Φ, and inject air with different intensities, and is configured so that an air injection degree of a front end is weakest and subsequently stronger.

[0033] Knobs 7a, 7b, and 7c for adjusting the intensity and pressure of the air is provided in the air nozzle unit 7, and as a result, the intensity and the pressure of the air may be arbitrarily set by adjusting the knobs.

[0034] The air nozzle unit 7 has a horizontal movement unit 16 and a vertical movement unit 17 for left-right or up-down movement integrally installed therein, and the horizontal movement unit 16 and the vertical movement unit 17 may be manually adjusted and automatically move a motor, an air cylinder, or a solenoid.

[0035] An action of the present invention configured as such will be described.

[0036] In general, in a circular secondary battery for the electric vehicle, a flag shape is made and folded by processing uncoated portions without coating of a negative electrode and a positive electrode with a laser, and a terminal is welded thereon to make a battery and form the flag before winding the secondary battery as such.

[0037] When a process for forming the flag is described, the electrode 9 unrolled and moved from the winding unit 1 moves through the rollers 2 to 4 and passes through the laser notching unit 5, and laser notching of the scrap 10 of the electrode 9 is performed, and in this case, a laser notching form have a trapezoidal shape, and the scraps may not be normally separated, and entangled and moved.

[0038] Accordingly, in the present invention, the scrap 10 is completely separated from the trapezoidal shape, which may be collected through the collection unit 8.

[0039] That is, in the present invention, the air is injected to the scrap 10 of the electrode 9 notched by the laser notching unit 5 stepwise in weak-medium-strong steps to well separate and discharge the scrap 10 while the scrap 10 is entangled.

[0040] To this end, multiple nozzles 7d, 7e, and 7f are provided in the air nozzle unit 7 of the present invention as illustrated in FIGS. 2 and 3, injection degrees of respective nozzles are set differently.

[0041] That is, the air nozzle unit is installed so that the injection degree of the nozzle located at the front end is weakest, and subsequently gradually stronger.

[0042] Accordingly, the scrap 10 is completely separated by the nozzles 7a, 7b, and 7c of the injection nozzle unit 7 to be discharged through the collection unit 8.

[0043] In this case, the nozzles 7a, 7b, and 7c may adjust the pressure, the location, and the height of the air to be injected ultraprecisely, and the knobs 7a, 7b, and 7c are installed on a front surface of the air nozzle unit 7, and the pressure and the intensity of the air may be adjusted by adjusting the knobs.

[0044] Here, the nozzles 7a, 7b, and 7c are enabled to inject the air ultraprecisley, and only when the air is accurately injected to a predetermined portion of the scrap 10, it is possible to efficiently completely separate the scrap 10.

[0045] Further, the air nozzle unit 7 is set so that the location is adjusted horizontally or vertically by the horizontal movement unit 16 and the vertical movement unit 17, and the horizontal movement unit 16 and the vertical movement unit 17 may be horizontally and vertically by the motor, the air cylinder, or the solenoid, and may be manually adjusted by a worker.

[0046] Meanwhile, the scrap 10 separated by the air nozzle unit 7 is suctioned to the collection unit 8 by the air suction to be separately discharged.

[0047] The above description just illustrates the technical spirit of the present invention and various changes, modifications, and substitutions can be made by those skilled in the art to which the present invention pertains without departing from an essential characteristic of the present invention.

[0048] Therefore, the exemplary embodiments and the accompanying drawings disclosed in the present invention are used to not limit but describe the technical spirit of the present invention and the scope of the technical spirit of the present invention is not limited by the exemplary embodiments and the accompanying drawings.

[0049] The protective scope of the present invention should be construed based on the following claims, and all the technical concepts in the equivalent scope thereof should be construed as falling within the scope of the present invention.

EXPLANATION OF REFERENCE NUMERALS AND SYMBOLS

[0050] 1: Winding unit [0051] 2-4, 6, 11-15: Roller [0052] 5: Laser notching unit [0053] 7: Air nozzle unit [0054] 7a, 7b, 7c: Knob [0055] 7d, 7e, 7f: Nozzle [0056] 8: Collection unit [0057] 9: Electrode [0058] 10: Scrap