KR-102962578-B1 - ELECTRODE MANUFACTURING DEVICE AND ELECTRODE MANUFACTURING METHOD USING THE SAME

KR102962578B1KR 102962578 B1KR102962578 B1KR 102962578B1KR-102962578-B1

Abstract

An electrode manufacturing device according to one embodiment of the present invention comprises: a first electrode suction unit and a second electrode suction unit for suctioning a first electrode; a third electrode suction unit for suctioning a second electrode; a rotating unit connected to the end of the first electrode suction unit for rotating the first electrode suction unit; a cutting unit for cutting between the normal electrode and the defective electrode, wherein the first electrode includes a normal electrode and a defective electrode; and a taping unit positioned spaced apart in a direction opposite to the cutting unit, and when the cutting operation of the cutting unit is completed, the rotating unit rotates so that the first electrode suction unit is placed on the same plane as the second electrode suction unit or the third electrode suction unit.

Inventors

김성겸
설정수
정의영
조인상

Assignees

주식회사 엘지에너지솔루션

Dates

Publication Date: 20260512
Application Date: 20220106
Priority Date: 20210112

Claims (19)

A first electrode suction part and a second electrode suction part for suctioning the first electrode; A third electrode suction part that suctions the second electrode; A rotating part connected to the end of the first electrode suction part and rotating the first electrode suction part; The first electrode comprises a normal electrode and a defective electrode, and a cutting portion that cuts between the normal electrode and the defective electrode; and It includes a taping portion positioned spaced apart in a direction opposite to the above-mentioned cutting portion, and When the cutting operation of the above cutting part is completed, the rotating part rotates so that the first electrode suction part is positioned on the same plane as the second electrode suction part or the third electrode suction part, and The above cutting section includes a first cutting section and a second cutting section, and The above taping portion includes a first taping portion and a second taping portion, and The first cutting portion and the first taping portion are located between the first electrode suction portion and the second electrode suction portion, and The electrode manufacturing device in which the second cutting part and the second taping part are located between the first electrode suction part and the third electrode suction part.
In paragraph 1, The electrode manufacturing apparatus wherein the first electrode suction part, the second electrode suction part, and the third electrode suction part each include a suction plate.
In paragraph 1, An electrode manufacturing device in which the second electrode suction part and the third electrode suction part are spaced apart in a direction perpendicular to each other.
In paragraph 1, The above-mentioned rotating part is an electrode manufacturing device comprising a motor and a worm gear.
In paragraph 1, The above cutting section is a rodless cylinder, forming an electrode manufacturing device.
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In paragraph 1, The above normal electrode includes a first normal electrode and a second normal electrode, and The above defective electrode is an electrode manufacturing device located between the first normal electrode and the second normal electrode.
In Paragraph 7, An electrode manufacturing device in which the first normal electrode is positioned on the second electrode suction part, and the first normal electrode and the defective electrode are cut by the first cutting part.
In paragraph 8, The first electrode suction part is rotated by the rotating part and connected to the third electrode suction part, and The above defective electrode is an electrode manufacturing device connected to the second electrode by the above second taping part.
In Paragraph 9, The above second taping part is an electrode manufacturing device that attaches a first adhesive sheet between the defective electrode and the second electrode.
In Paragraph 9, An electrode manufacturing device further comprising a winding unit that winds at least a portion of the connected defective electrode and the second electrode.
In Paragraph 11, An electrode manufacturing device in which the length wound by the above-mentioned winding unit is equal to or greater than the length of the above-mentioned defective electrode.
In Paragraph 11, An electrode manufacturing device in which the second normal electrode is positioned in the first electrode suction part by the winding part, and the space between the second normal electrode and the defective electrode is cut by the second cutting part.
In Paragraph 13, The first electrode suction part is rotated by the rotating part and connected to the second electrode suction part, and The above second normal electrode is an electrode manufacturing device connected to the first normal electrode by the above first taping part.
In Paragraph 14, The above-described first taping part is an electrode manufacturing device that attaches a second adhesive sheet between the first normal electrode and the second normal electrode.
In paragraph 1, An electrode manufacturing device in which the completion of the above cutting operation is determined based on the position of the cutting part.
In paragraph 1, The above electrode manufacturing device further includes a detection unit, and The above detection unit determines whether the first electrode contains a defective electrode, and An electrode manufacturing device in which suction operations of the first electrode suction unit and the second electrode suction unit are performed based on information obtained by the above detection unit.
In an electrode manufacturing method performed by the electrode manufacturing apparatus of claim 1, A step of separating the normal electrode and the defective electrode by cutting the first electrode located in the first electrode suction part and the second electrode suction part, A step in which the first electrode suction part is positioned on the same plane as the third electrode suction part by rotating the above rotating part, and A method for manufacturing an electrode comprising the step of the taping portion connecting the defective electrode on the first electrode suction portion and the second electrode on the third electrode suction portion.
An electrode for a secondary battery manufactured by the electrode manufacturing device of claim 1.

Description

Electrode manufacturing device and electrode manufacturing method using the same The present invention relates to an electrode manufacturing apparatus and an electrode manufacturing method using the same. More specifically, it relates to an electrode manufacturing apparatus that automatically separates and discards normal electrodes and defective electrodes, and automatically reconnects normal electrodes, thereby improving equipment efficiency and productivity, and an electrode manufacturing method using the same. With the increasing technological development and demand for mobile devices, the demand for secondary batteries as an energy source is rapidly increasing. In particular, secondary batteries are attracting significant interest as an energy source not only for mobile devices such as mobile phones, digital cameras, laptops, and wearable devices, but also for power devices such as electric bicycles, electric vehicles, and hybrid electric vehicles. Secondary batteries are classified according to the shape of the battery case into cylindrical and prismatic batteries, in which the electrode assembly is embedded in a cylindrical or prismatic metal can, and pouch-type batteries, in which the electrode assembly is embedded in a pouch-type case made of aluminum laminate sheet. Additionally, a secondary battery can be formed by inserting an electrode assembly, consisting of a positive electrode, a negative electrode, and a separator, into a case and then sealing it. The electrode assembly can be formed by winding it multiple times in a jelly roll shape or stacking it in multiple layers, with a separator interposed between the positive electrode and the negative electrode. Meanwhile, recently, secondary batteries utilize a roll-to-roll process for manufacturing raw materials for electrodes such as positive electrodes, negative electrodes, and separators. However, during the roll-to-roll process, if the raw materials contain defects, it is necessary to discard the defective parts early in the process and reconnect the normal parts. FIG. 1 is a drawing showing a conventional electrode manufacturing apparatus. FIG. 2 is a drawing showing the separation and disposal of defective electrodes and the reconnection of normal electrodes in the electrode manufacturing apparatus of FIG. 1. Referring to FIG. 1, a conventional electrode manufacturing device (10) includes an electrode suction unit (11), an electrode moving unit (15), and a cutting unit (17). Here, the electrode suction unit (11) can suction the electrode (20) moved by the electrode moving unit (15). Referring to FIG. 2 (a), the electrode (20) may include a normal electrode (21) and a defective electrode (25). Here, when the defective electrode (25) passes through the electrode suction section (11), the conventional electrode manufacturing device (10) manually cuts between the normal electrode (21) and the defective electrode (25) through the cutting section (17). Referring to FIG. 2 (b), the defective electrode (25) cut by the cutting section (17) in FIG. 2 (a) is manually wound onto the winding section (40) along the guide roll (30), and the defective electrode (25) and the normal electrode (21) are manually cut. Referring to FIG. 2 (c), the normal electrode (21) cut manually in FIG. 2 (b) is reconnected by manually attaching a tape (29) to the normal electrode (21) cut by the cutting section (17) in FIG. 2 (a). However, as shown in FIG. 2, the disposal and winding of defective electrodes (25) in the conventional electrode manufacturing device (10) are both performed manually, and the reconnection between normal electrodes (21) is also performed manually, which has the problem of reduced equipment efficiency and productivity. Accordingly, unlike the conventional electrode manufacturing device (10), there is a growing need to develop an electrode manufacturing device in which defective electrodes and normal electrodes are separated automatically, and the disposal of defective electrodes and the reconnection of normal electrodes are performed automatically. Figure 1 is a drawing showing a conventional electrode manufacturing apparatus. Figure 2 is a diagram showing the separation and disposal of defective electrodes and the reconnection of normal electrodes in the electrode manufacturing device of Figure 1. FIG. 3 is a drawing showing an electrode manufacturing apparatus according to one embodiment of the present invention. FIGS. 4 to 9 are drawings showing the separation and disposal of defective electrodes and the reconnection of normal electrodes in the electrode manufacturing device of FIG. 3. Hereinafter, various embodiments of the present invention will be described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present invention. The present invention may be embodied in various different forms and is not limited to the embodiments described herein. To clearly explain the present invention, pa