KR-20260063665-A - APPARATUS AND METHOD FOR STACKING

KR20260063665AKR 20260063665 AKR20260063665 AKR 20260063665AKR-20260063665-A

Abstract

An electrode stacking device that alternately and continuously stacks the first electrode and the second electrode on a fixed stacking area using a first rotating body that carries the first electrode and a second rotating body that carries the second electrode; a separator stacking device that stacks a separator on the topmost electrode whenever the first electrode and the second electrode are stacked, and separates the first electrode and the second electrode by moving in a zigzag pattern so that the separator is continuously connected; and a control unit that controls the timing of stacking the first electrode, stacking the separator, and stacking the second electrode, wherein the first axis of the first rotating body and the second axis of the second rotating body are arranged to be concentric. According to the present invention, the first electrode and the second electrode can be stacked quickly and accurately using different robot arms having concentric centers of rotation.

Inventors

정연길

Assignees

유일에너테크(주)

Dates

Publication Date: 20260507
Application Date: 20241030

Claims (13)

An electrode stacking device that alternately and continuously stacks the first electrode and the second electrode on a fixed stacking area using a first rotating body that carries a first electrode and a second rotating body that carries a second electrode; A separator stacking device that stacks a separator on the uppermost stacked electrode whenever the first electrode and the second electrode are stacked, and separates the first electrode and the second electrode by moving in a zigzag pattern so that the separator is continuously connected; and A control unit for controlling the timing of stacking the first electrode, stacking the separator, and stacking the second electrode, wherein The first axis of the first rotating body and the second axis of the second rotating body are arranged to form a concentric relationship. Stacking system.
In claim 1, The first rotating body includes a first arm portion that adsorbs the first electrode placed on the first stage through rotation of the first axis and transports it to the stacking area. The second rotating body is configured to include a second arm portion that adsorbs the second electrode placed on the second stage through rotation of the second axis and transports it to the stacking area. Stacking system.
In claim 2, The first rotating body includes a third arm that adsorbs the first electrode placed in the first magazine through simultaneous rotation with the first arm and transports it to the first stage. The second rotating body is configured to include a fourth arm that adsorbs the second electrode disposed in the second magazine through simultaneous rotation with the third arm and transports it to the second stage. Stacking system.
In claim 3, The first rotating body includes a first rotating plate connected to the first shaft, and The second rotating body is configured to include a second rotating plate connected to a second axis located above the first axis. Stacking system.
In claim 4, The first arm and the third arm are combined with the first rotating plate at an acute angle between them, and The second arm and the fourth arm are configured to be coupled with the second rotating plate at an acute angle between them. Stacking system.
In claim 4, the control unit is, The first rotary plate is rotated within an acute angle range to control the first arm and the third arm to switch between the first magazine and the first stage and between the first stage and the stacking area, and Configured to control the second rotating plate to rotate within an acute angle range so that the second arm and the fourth arm switch between the second magazine and the second stage and between the second stage and the stacking area, Stacking system.
In claim 1, the control unit is, When the first electrode is stacked on the separator, the separator stacking device is controlled so that the separator covers the side and top surfaces of the first electrode, and When the second electrode is stacked on the separator, the separator stacking device is configured to control the separator so that the separator covers the side and top surfaces of the second electrode. Stacking system.
In claim 7, the control unit is, The above separator stacking device is configured to control the operation of stacking the separators while drawing a two-dimensional trajectory in the up-down (z-axis) direction and the left-right (x-axis) direction. Stacking system.
In claim 3, It further includes a gripper part that grasps and transports an electrode pack in which the stacking of the first electrode, the second electrode, and the separator is completed, and The above control unit is, Configured to control movement into the stacking area of the gripper part, and movement to avoid the first stage or the second stage so as not to interfere with the gripper part. Stacking system.
A method executed by a stacking system installed in a stacking area, A step of stacking a first electrode on a separator in the stacking region; A step of stacking a separator continuously with the separator on the first electrode; Step of stacking a second electrode on the separator; and The method includes the step of stacking a separator continuously with the separator on the second electrode, and The stacking of the first electrode, the two layers of the separator, and the second electrode is repeated several cycles, The step of stacking the first electrode and the second electrode is, A first rotating body having a first axis stacks the first electrode, and a second rotating body having a second axis having the same center as the first axis stacks the second electrode, characterized in that Stacking method.
In claim 10, the step of stacking the separator is, A step of controlling a roller to reciprocate the separator at the point where stacking begins in the left-right (x-axis) direction; and A method configured to include a step of controlling the separator at the point where the stacking begins to reciprocate in the upward (+z-axis) direction and the downward (-z-axis) direction between the movement in the right (-x-axis) direction and the movement in the left (+x-axis) direction. Stacking method.
In claim 10, the step of stacking the first electrode or the second electrode is, An electrode adsorption step for adsorbing the first electrode or the second electrode disposed in a storage area; and An electrode transport step for moving the adsorbed first electrode or the second electrode to the stacking region; and A method configured to include an electrode release step of lowering the first electrode or the second electrode in the stacking region. Stacking method.
In claim 12, the electrode adsorption step is, A method configured to include a step of preventing two or more electrodes from adsorbing due to static electricity by using at least one method among a method using vibration, a method using wind, and a method using a physical tool. Stacking method.

Description

Stacking System and Stacking Method {APPARATUS AND METHOD FOR STACKING} The present invention relates to a stacking system and a stacking method, and more specifically, to a method of alternately stacking a separator and an electrode in manufacturing an electrode of a secondary battery and a system using the same. The stacking device of the stacking system includes a rotating body. The rotating body rotates the arm and performs a repetitive operation of adsorbing an electrode loaded in a magazine with a suction device attached to the end of the arm and releasing it onto the stacking area. The arm of the stacking device can adsorb electrodes loaded in a magazine and transport them to the stacking area. The arm rotates around an axis and can move back and forth between the magazine and the stacking area. The first electrode and the second electrode can be transported by different rotating bodies. A separator can be inserted between electrodes (first electrode, second electrode) that are stacked in a sheet form. In order for the separator to be inserted between the electrodes, the stacked region in which the separator or electrode is stacked must move. According to conventional technology, a separator was inserted between the electrodes as the stacking region, or electrodes, moved. However, due to the method of electrode movement, there was a problem where the separator could not tightly wrap around the electrodes, resulting in an excessive amount of separator residue. In addition, according to conventional technology, there was a problem where the time required for the arm of the stacking system to move increased if the movement time was prolonged, thereby increasing the time of the entire stacking process. In addition, according to conventional technology, there was a problem in that two or more electrodes were adsorbed due to causes such as static electricity prior to lamination. In addition, according to conventional technology, there was a problem where the copper wires of the electrode stacking device and the separator stacking device interfered with each other. As a technology related to the present invention, a Korean registered patent publication discloses a method for manufacturing an electrode stack for an energy storage device of an automobile, relating to the folding of electrode strips in which a separator strip is interposed between a cathode and an anode. This related technology relates to folding the anode and cathode using a gripper after aligning the electrode strips in a horizontal plane, whereas the present invention involves stacking electrodes alternately and inserting a separator between the electrodes, in that the configuration and effects of the two inventions are distinguished from each other. FIG. 1 is an exemplary diagram of a stacking system according to one embodiment of the present invention. Figure 2 is an example diagram of an electrode stacking device included in the stacking system of Figure 1. FIG. 3 is an exemplary diagram of a separator stacking device according to the first embodiment of the present invention. FIG. 4 is an exemplary diagram of a driving unit according to one embodiment of the present invention. FIG. 5 is an example of a laminate stacked by a separator stacking device according to the first embodiment of the present invention. FIG. 6 is a front view of a separator stacking device according to the first embodiment of the present invention. FIG. 7 is a right side view of a separator stacking device according to the first embodiment of the present invention. FIG. 8 is a plan view of a separator stacking device according to the first embodiment of the present invention. FIG. 9 is an exemplary diagram of a first guide included in a separator stacking device according to a first embodiment of the present invention. FIG. 10 is a series of exemplary diagrams of a separator stacking method using a separator stacking device according to the first embodiment of the present invention. FIG. 11 is an exemplary diagram of a separator stacking device according to a second embodiment of the present invention. FIG. 12 is a plan view of a separator stacking device according to a second embodiment of the present invention. FIG. 13 is an exemplary diagram of a first guide included in a separator stacking device according to a second embodiment of the present invention. FIG. 14 is a series of exemplary diagrams of a separator stacking method using a separator stacking device according to a second embodiment of the present invention. FIG. 15 is an exemplary diagram of an electrode pre-layer device using an electrode supply method according to the first embodiment of the present invention. FIG. 16 is an exemplary diagram of an electrode stacking device using an electrode supply method according to a second embodiment of the present invention. FIG. 17 is an exemplary diagram of a gripper part according to one embodiment of the present invention. FIG. 18 is an exemplary diagram of