KR-102962735-B1 - Apparatus for Manufacturing Electrodes Using Dry Process and Method for Manufacturing Electrodes Using the Same

KR102962735B1KR 102962735 B1KR102962735 B1KR 102962735B1KR-102962735-B1

Abstract

The present invention relates to an electrode manufacturing apparatus using a dry process and a manufacturing method using the same. An electrode layer continuously conveyed by a rolling roller is precisely cut and processed into a predetermined stripe pattern shape through an electrode processing unit, and the processed electrode layer is laminated in a state aligned with a substrate in a subsequent laminating unit, thereby enabling the pattern-formed electrode layer to be stably attached to a substrate. Accordingly, the invention relates to an electrode manufacturing apparatus using a dry process and a manufacturing method using the same that can form various patterns on the surface of an electrode sheet with high precision.

Inventors

정재훈
김남훈
황해훈

Assignees

(주)에이시스테크놀로지

Dates

Publication Date: 20260508
Application Date: 20250731

Claims (16)

An electrode transfer roller section for continuously transferring a sheet-like solid electrode layer; An electrode processing unit that cuts the above electrode layer into a preset pattern; A lamination section for laminating the above-mentioned cut electrode layer so as to be aligned and matched with a substrate; and A control unit that controls the operation of the electrode transfer roller unit, the electrode processing unit, and the lamination unit; Includes, The above electrode processing unit is, A cutting part that cuts the surface of the electrode layer into a preset pattern; A peeling portion for peeling off the portion of the electrode layer to be removed, cut by the above-mentioned cutting portion, from the surface of the electrode layer; and A suction discharge unit that sucks in and collects the area to be removed of the electrode layer peeled off by the above peeling unit; Includes, The above peeling part is, A scraper that physically removes an area other than a preset pattern attached to the outer surface of a rolling roller through which the electrode layer is conveyed, and An electrode manufacturing apparatus comprising an electrostatic peeling unit that removes fine particles from the residue separated by the scraper using electrostatic force.
delete
In paragraph 1, the above-mentioned cutting part is, An electrode manufacturing apparatus comprising a depth control unit that controls the cutting depth according to the thickness of the electrode layer.
In paragraph 1, the above-mentioned cutting part is, An image sensor that captures the cutting position of the electrode layer and An electrode manufacturing apparatus further comprising a pattern recognition sensor that analyzes image data received from the image sensor and aligns and corrects the cutting position.
delete
In paragraph 1, the suction discharge part is, A hopper located below the scraper above, which primarily sucks and collects the removed lumpy residue; A local nozzle-type suction device for secondary suction of fine residue adjacent to the above-mentioned cutting and peeling sections; A transfer duct for transferring residue sucked by the above-mentioned hopper and local nozzle-type suction device; and A dust collection filter unit that filters debris and dust introduced through the above transfer duct to prevent external diffusion; An electrode manufacturing device comprising
In paragraph 6, the dust collection filter unit is, It includes a plurality of filters that filter particles of different sizes in stages from the residue transported by the above-mentioned transport duct, and An electrode manufacturing device further comprising a capture amount detection sensor that detects the capture amount for each of the plurality of filters and determines the replacement time.
In paragraph 1, The above cutting and peeling sections are each independently movable along the width direction (X-axis direction) of the electrode layer, and each cutting and peeling section is mounted on a support frame. An electrode manufacturing device configured such that a low-friction cylinder is installed in the support frame above, allowing the travel distance and position of the cutting section and the peeling section to be controlled independently.
In paragraph 1, the control unit is, An electrode manufacturing device further comprising a sensor unit that recognizes the position or alignment state of the electrode layer.
In paragraph 9, the control unit is, An electrode manufacturing device comprising a correction unit that stops or corrects a processing operation when an alignment error is greater than or equal to a threshold value based on position information received from the sensor unit.
In paragraph 9, the control unit is, An electrode manufacturing apparatus comprising a feedback control unit that controls the transfer speed and cutting timing of the electrode layer according to real-time conditions based on data received from the sensor unit.
An electrode transfer step for continuously transferring a solid electrode layer sheeted by a rolling roller; Electrode processing step of cutting the above electrode layer into a preset shape to remove unnecessary areas; A lamination step of laminating electrode layers cut according to the above preset pattern so as to align and match them with a substrate; and A control step for controlling the operation of the above electrode transfer step, electrode processing step, and lamination step; Includes, The above electrode processing step is, A cutting step for cutting the surface of the electrode layer into a preset pattern; A peeling step for peeling off the portion of the electrode layer to be removed, cut in the above cutting step, from the surface of the electrode sheet; and A suction discharge step for suctioning and collecting the unnecessary electrode layer removed in the above peeling step; Includes, The above peeling step is, A scraper disposed on the outer surface of a rolling roller through which the electrode layer is conveyed, for physically removing an area of the electrode layer other than a preset pattern, and A method for manufacturing an electrode comprising an electrostatic peeling unit that removes fine particles remaining on the surface of an electrode sheet from a coating layer separated by the scraper using electrostatic force.
In Clause 12, the above control step is, A method for manufacturing an electrode, further comprising a sensing step for detecting the position or alignment state of the electrode layer in real time.
In Clause 13, the above control step is, A correction step for stopping or correcting processing when the alignment error is greater than or equal to a threshold value, based on the position information received from the above detection step, and A method for manufacturing an electrode, further comprising a feedback control step for controlling the transfer speed and cutting timing of the electrode layer by reflecting the correction information corrected in the correction step above.
In Clause 14, the above correction step is, The alignment state history of the above electrode layer is stored, and A method for manufacturing an electrode, comprising the step of analyzing stored historical data to update and reflect alignment correction conditions.
In Clause 13, the above detection step is, A method for manufacturing an electrode, comprising the step of continuously detecting a change in the position of the electrode layer and, if an alignment error occurs, calculating a correction value in real time.

Description

Apparatus for Manufacturing Electrodes Using Dry Process and Method for Manufacturing Electrodes Using the Same The present invention relates to an electrode manufacturing apparatus using a dry process and a manufacturing method using the same. More specifically, the invention relates to a dry electrode manufacturing apparatus configured to continuously transport a solid-state electrode layer, process it into a preset pattern, and align and laminate it with a substrate to manufacture an electrode sheet, and a manufacturing method using the same. The manufacturing process for secondary battery electrodes is broadly divided into wet and dry processes. In the wet process, four main types of electrodes can be produced depending on the coating method. For example, it is possible to produce electrodes with continuous electrode, pattern electrode, stripe electrode, and intermittent electrode shapes using the wet process. Such wet coating processes are generally implemented by applying mechanical elements such as slot dies or cams together with a precision control system based on program control. Meanwhile, the dry process manufactures electrodes by supplying and rolling dry powder in a solid state between multiple rolls without using a solvent. In other words, it is a process of manufacturing electrodes by forming the electrode active material powder into a sheet shape, much like dough, and then pressing or laminating it with a current collector. Korean Patent Publication No. 10-2023-0069002 disclosed a dry manufacturing method for an electrode for a secondary battery, comprising the steps of: mixing an active material, a binder, and a conductive material and feeding the mixture into a screw mixer; rotating the screw to advance the mixture while performing primary heating and melting; stirring the heated and melted mixture while rotating the screw to advance it; performing secondary heating and stirring the stirred mixture while rotating the screw to advance it; pressing the secondarily heated and stirred mixture forward by rotating the screw to advance it to a nozzle end; a film manufacturing step in which the mixture discharged in a film shape through the nozzle is compressed by rollers located above and below to extract the film; and attaching the manufactured film to a metal foil to manufacture an electrode. However, conventional Korean Patent Publication No. 10-2023-0069002 discloses only a method for manufacturing a continuous electrode, but does not specifically disclose a method for manufacturing electrodes having various patterns. Manufacturing electrodes having such patterns requires precise material supply control and processing; however, conventional technology lacks systematic implementation of driving methods, processing position control, and residual powder removal processes, resulting in limitations in securing process flexibility and processing precision. FIG. 1 is a schematic diagram of an electrode manufacturing apparatus of the present invention. FIG. 2 is a block diagram of the electrode manufacturing apparatus of the present invention. FIG. 3 is a detailed block diagram of the electrode processing unit of the present invention. FIG. 4 is a schematic diagram of the cutting part of the present invention. FIG. 5 is a detailed block diagram of the cutting section of the present invention. FIG. 6 is a schematic diagram of the peeling portion of the present invention. FIG. 7 is a detailed block diagram of the peeling portion of the present invention. FIG. 8 is a schematic diagram of the suction and discharge unit of the present invention. FIG. 9 is a detailed block diagram of the suction and discharge section of the present invention. FIG. 10 is a schematic diagram of a low-friction cylinder installed corresponding to each of the cutting section and the peeling section of the electrode manufacturing device of the present invention. FIG. 11 is a block diagram of the control unit of the present invention. FIG. 12 is a schematic diagram of an electrode sheet in which a stripe-patterned electrode layer manufactured by the electrode manufacturing apparatus of the present invention is laminated to a substrate. FIG. 13 is a flowchart of the electrode manufacturing method of the present invention. FIG. 14 is a detailed flowchart of the electrode processing step of the present invention. FIG. 15 is a detailed flowchart of the control steps of the present invention. The present disclosure will be described in detail below with reference to the attached drawings. However, this is merely illustrative and the present disclosure is not limited to the specific embodiments described illustratively. Unless otherwise defined, all technical and scientific terms have the same meaning as generally understood by one of the art to which the present invention pertains. Terms used for illustrative purposes in the present invention are merely for effectively describing specific embodiments and are not intended to limit the