Transfer device and transfer method for unit cells

Abstract

The unit cell transfer device according to an embodiment of the present invention detects the alignment of the unit cells using a first detector before the rotor unit adsorbs the unit cells and corrects the alignment of the unit cells based on the detected information, thereby performing the alignment detection and correction work in advance to more accurately correct the alignment of the unit cells. In addition, the unit cell transfer device has the first to third detectors disposed at each position to ensure a range for alignment correction, thereby reducing the number of unit cells that are wasted and increasing the production volume of electrodes.

Description

[Technical Field]

[0001] This application claims the benefit of priority based on Korean Patent Application No. 10-2022-0025560 filed on February 25, 2022 and Korean Patent Application No. 10-2023-0024550 filed on February 23, 2023, and all contents disclosed in the documents of said Korean patent applications are incorporated herein by reference.

[0002] The present invention relates to an apparatus and method for transferring unit cells during the manufacturing process of secondary batteries. [Background technology]

[0003] Generally, types of secondary batteries include nickel-cadmium batteries, nickel-metal hydride batteries, lithium-ion batteries, lithium-ion polymer batteries, etc. These secondary batteries are used not only in small products such as digital cameras, P-DVDs, MP3 players, mobile phones, PDAs (registered trademark), portable game devices, power tools, and e-bikes, but also in large products that require high output, such as electric vehicles and hybrid vehicles, as well as in power storage devices and backup power storage devices that store surplus generated power and new renewable energy.

[0004] To manufacture such a secondary battery, first, an electrode active material slurry is applied to a positive electrode current collector and a negative electrode current collector to form a positive electrode and a negative electrode, which are then stacked on both sides of a separator to form an electrode assembly of a predetermined shape, and then the electrode assembly is placed in a battery case, an electrolyte is injected, and the battery case is sealed.

[0005] In a process of manufacturing an electrode assembly, a plurality of unit cells stacked in a magazine are transferred to the next process, and a unit cell transfer device can be used during the transfer process. Since the process of aligning, designing, and transferring the unit cells is an essential process in a process of manufacturing an electrode assembly using unit cells, the unit cell transfer device must transfer the unit cells while maintaining precise alignment. Therefore, there is a need for a transfer device that can more precisely detect the alignment of the unit cells and effectively correct alignment errors. Summary of the Invention [Problem to be solved by the invention]

[0006] One problem to be solved by the present invention is to provide a transfer device and a transfer method. [Means for solving the problem]

[0007] In a transfer device for transferring a plurality of unit cells stacked in a magazine, according to an embodiment of the present invention, the transfer device for unit cells may include an adsorption unit that adsorbs the unit cell placed in the magazine, a rotor unit that receives the unit cell from the adsorption unit and moves the unit cell by a rotational motion in an adsorbed state, and a first detector that detects alignment of the unit cell adsorbed to the adsorption unit.

[0008] The rotor unit may include at least one rotating blade rotating about a rotation axis, and at least one suction plate connected to one end of each rotating blade to suction and transfer the unit cell.

[0009] The wafer transport device may further include a controller that controls the chucking and transporting operations of the rotor unit based on the alignment of the unit cell detected by the first detector.

[0010] The suction unit may include a first suction unit that suctions the unit cell placed in the magazine, and a second suction unit that is positioned outside the first suction unit and receives and suctions the unit cell from the first suction unit.

[0011] The control unit may adjust an adsorption angle and a position of the adsorption plate located above the second adsorption unit based on the alignment of the unit cell detected by the first detection unit.

[0012] The suction plate may sequentially move among a first position for receiving the unit cell from the suction portion, a second position for detecting alignment of the suctioned unit cell, a third position for releasing the suctioned unit cell, and a fourth position for discarding the unit cell not released at the third position.

[0013] The substrate may further include a second detector located below the unit cell attracted at the second position and configured to detect alignment of the lower surface of the unit cell.

[0014] The device may further include a third detector located at the third position and configured to detect alignment of the unit cell before the unit cell is released.

[0015] The control unit may determine whether to release the unit cell based on the alignment of the unit cell measured by the second detection unit and the third detection unit, and may control the rotor unit to transport the unreleased unit cell to the fourth position.

[0016] The first detection unit may be located at the first position and may detect alignment of the unit cell before the unit cell is transferred from the first suction unit to the second suction unit.

[0017] The first suction portion may adsorb the unit cell located below the first suction portion and move the unit cell above the first suction portion by a rotational movement, and the first detection portion may detect alignment of the unit cell located above the first suction portion while positioned above the first suction portion.

[0018] In a method for transferring a plurality of unit cells stacked in a magazine, according to another embodiment of the present invention, the method may include a suction step of suctioning the unit cells placed in the magazine with a suction unit; a first detection step of detecting alignment of the unit cells suctioned to the suction unit with a first detection unit; and a transfer step of receiving the unit cells from the suction unit and transferring them with a rotor unit.

[0019] The rotor unit may include at least one rotating blade rotating about a rotation axis, and at least one suction plate connected to one end of each rotating blade to suction and transfer the unit cell.

[0020] The suction step may include a first suction step in which a first suction unit suctions the unit cell placed on the magazine, and a second suction step in which a second suction unit receives and suctions the unit cell suctioned by the first suction unit.

[0021] The transferring step may include an adjusting step of adjusting an adsorption angle and a position of the adsorption plate located above the second adsorption unit based on the alignment of the unit cell detected by the first detection unit.

[0022] The suction plate may sequentially move among a first position for receiving the unit cell from the suction portion, a second position for detecting alignment of the suctioned unit cell, a third position for releasing the suctioned unit cell, and a fourth position for discarding the unit cell not released at the third position.

[0023] The transferring step may further include a second detecting step in which a second detector is positioned below the unit cell at the second position to detect alignment of a lower surface of the unit cell, and a third detecting step in which a third detector is positioned at the third position to detect alignment of the unit cell before the unit cell is released.

[0024] The transferring step may further include a determining step of determining whether to release the unit cells based on the alignment of the unit cells detected by the second and third detecting units, a releasing step of releasing the unit cells determined to be released in the determining step, and a discarding step of discarding the unit cells not released in the releasing step at the fourth position. [Effects of the Invention]

[0025] According to a preferred embodiment of the present invention, the first detector detects the alignment of the unit cells before the rotor unit adsorbs the unit cells, and corrects the alignment of the unit cells based on the detected information. This allows for more precise alignment correction by performing the alignment detection and correction work in advance.

[0026] According to a preferred embodiment of the present invention, by arranging the first to third detection units at respective positions, the range of alignment correction can be secured, and the number of unit cells discarded can be reduced, thereby increasing the production yield of electrodes.

[0027] Other effects may be included that can be easily predicted by a person skilled in the art from the configuration according to the preferred embodiment of the present invention. [Brief explanation of the drawings]

[0028] The following drawings attached to this specification illustrate preferred embodiments of the present invention and, together with the detailed description of the invention described below, serve to further understand the technical concept of the present invention. Therefore, the present invention should not be interpreted as being limited solely to the matters depicted in such drawings.

[0029] [Figure 1] FIG. 1 is a perspective view of a unit cell transfer device according to an embodiment of the present invention. [Figure 2] 1 is a plan view showing a state in which a unit cell is attached to a first attachment portion according to an embodiment of the present invention. [Figure 3]10 is a plan view showing a state in which a suction plate is disposed on one side of a second suction portion according to an embodiment of the present invention. FIG. [Figure 4] FIG. 10 is a control block diagram of a unit cell transfer device according to an embodiment of the present invention. [Figure 5] 10 is a flowchart of a unit cell transfer method according to another embodiment of the present invention. [Figure 6] 10 is a flow chart of a transfer step according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0030] The present invention will be described in detail below with reference to the accompanying drawings, so that those skilled in the art can easily understand the preferred embodiments of the present invention. However, the present invention can be realized in various different forms and is not limited to the following embodiments.

[0031] In order to clearly explain the present invention, detailed descriptions of parts that are not relevant to the explanation or related known technologies that may obscure the gist of the present invention will be omitted, and when assigning reference symbols to components in each drawing in this specification, the same or similar reference symbols will be assigned to the same or similar components throughout the specification.

[0032] Furthermore, the terms and words used in this specification and claims should not be interpreted in a limited way to their ordinary or dictionary meanings, but should be interpreted in a way that is consistent with the technical idea of ​​the present invention, based on the principle that an inventor can appropriately define the concept of a term in order to explain his or her invention in the best possible way.

[0033] FIG. 1 is a perspective view of a unit cell transfer device 1 according to an embodiment of the present invention.

[0034] Referring to FIG. 1, the unit cell transfer device 1 can pick up and transfer the unit cells 2 stacked in the magazine m one by one. For example, the unit cell transfer device 1 can transfer the unit cells 2 along the rotation radius by rotating while picking up the unit cells 2. The unit cell transfer device 1 can detect the alignment of the unit cells 2 at each position spaced apart by a predetermined angle around the rotation axis of the unit cell transfer device 1, release the unit cells 2, and discard the unit cells 2. Furthermore, by re-detecting the alignment of the unit cells 2 at multiple positions, the accuracy of the alignment correction of the unit cells 2 can be improved. In particular, by detecting the alignment of the unit cells 2 in advance while initially picking up the unit cells 2 from the magazine m, more precise alignment correction can be achieved.

[0035] The unit cell transfer device 1 may include an adsorption unit 10, a rotor unit 11, and a first detection unit 12. The unit cell transfer device 1 may further include a second detection unit 13, a third detection unit 14, and a control unit 15.

[0036] The suction unit 10 can suction a unit cell 2 placed in the magazine m. That is, the suction unit 10 can suction one of the unit cells 2 stacked in the magazine m, move it by rotational motion, and then transmit it to the rotor unit 11, which will be described later.

[0037] The adsorption portion 10 may include a first adsorption portion 10a and a second adsorption portion 10b.

[0038] The first suction unit 10a can suction the unit cell 2 placed in the magazine m and can rotate around a rotation axis horizontal to the ground. For example, the first suction unit 10a may include a first body that rotates around a rotation axis horizontal to the ground, and a suction pad that moves so that the distance from the body changes.

[0039] The first suction unit 10a, while holding the unit cell 2 located below it with its suction pad, can rotate 180 degrees by rotation to move the unit cell 2 upward. The first suction unit 10a can also rotate 90 degrees in the same direction and then transfer the unit cell 2 it has held to the second suction unit 10b located on one side.

[0040] In this case, the suction pad of the first suction portion 10a can descend toward the magazine m to suction the unit cell 2, and then ascend and rotate to transfer the unit cell 2 to the second suction portion 10b.

[0041] Specifically, the first suction unit 10a can grip only one unit cell 2 out of the plurality of unit cells 2 stacked in the magazine m using a suction pad. To prevent multiple unit cells 2 from being transported overlapping each other, the first suction unit 10a can separate the overlapping unit cells 2 by shaking the unit cells 2 while gripping them. The first suction unit 10a can rotate while gripping only a single unit cell 2 through the shaking operation and transfer the unit cell 2 to the second suction unit 10b.

[0042] The second suction portion 10b is positioned outside the first suction portion 10a and can receive and hold the unit cell 2 from the first suction portion 10a by suction, and can rotate about a rotation axis horizontal to the ground. For example, the second suction portion 10b may include a second body that rotates about a rotation axis horizontal to the ground and a suction surface formed to move so as to change its distance from the second body and suction the unit cell 2. The suction surface of the second suction portion 10b can suction the unit cell 2 by using a vacuum. In other words, it is difficult to design a suction pad for the second suction portion 10b for structural reasons, and the second suction portion 10b can receive and hold the unit cell 2 from the first suction portion 10a by vacuum suction.

[0043] The second suction portion 10b rotates while adsorbing the unit cell 2, thereby moving the unit cell 2 above the second suction portion 10b. At this time, the rotation axis of the second suction portion 10b and the rotation axis of the first suction portion 10a may be parallel to each other. After the unit cell 2 moves above the second suction portion 10b, the upward movement of the adsorption surface moves the unit cell 2 upward, allowing it to be transferred to the rotor portion 11.

[0044] The rotor unit 11 can move the unit cells 2 by rotation while receiving and adsorbing the unit cells 2 from the adsorption unit 10. For example, the rotor unit 11 can sequentially move the adsorbed unit cells 2 to a plurality of predetermined positions, thereby releasing the plurality of unit cells 2 stacked in the magazine m to a specific position. Furthermore, the rotor unit 11 can discard the unit cells 2 that do not satisfy the alignment conditions at another specific position instead of releasing them.

[0045] The rotor portion 11 may include at least one rotor blade 110 and at least one suction plate 111 .

[0046] Each rotating blade 110 can rotate around a rotation axis. Each rotating blade 110 may be arranged at a predetermined angle apart from each other around the rotation axis. For example, there may be a total of four rotating blades, which are arranged at 90-degree angles to each other.

[0047] Each suction plate 111 can suction and transport a unit cell 2. For example, each suction plate 111 is connected to one end of each rotating blade 110, and can transport the unit cell 2 along the rotation radius while suctioning it due to the rotation of the rotating blade. The suction plate 111 is connected to the lower surface of the rotating blade, and can transport the unit cell 2 while the unit cell is suctioned to the lower surface of the suction plate 111.

[0048] However, the structure of the first suction portion 10a and the second suction portion 10b is not limited to this, and the suction pad of the first suction portion 10a may be replaced with an suction surface that performs vacuum suction, or the suction surface of the second suction portion 10b may be replaced with an suction pad.

[0049] The suction plate 111 can move sequentially among a first position P1 for receiving a unit cell 2 from the suction unit 10, a second position P2 for detecting the alignment of the unit cell 2, a third position P3 for releasing the suctioned unit cell 2, and a fourth position P4 for discarding the unit cell 2 not released at the third position P3. For example, the first position P1 to the fourth position P4 may be arranged at angles of 90 degrees relative to the rotation axis, and when one suction plate 111 moves from the first position P1 to the second position P2, the other suction plate 111 located behind it in the rotation direction may move from the fourth position P4 to the first position P1.

[0050] The first detection unit 12 can detect the alignment of the unit cell 2 adsorbed to the suction unit 10. Specifically, the first detection unit 12 can detect the alignment of the unit cell 2 before the unit cell 2 is transferred from the first suction unit 10a to the second suction unit 10b. For example, the first detection unit 12 may be located at the first position P1, particularly above the first suction unit 10a. That is, the first suction unit 10a adsorbs the unit cell 2 located below the first suction unit 10a and moves the unit cell 2 above the first suction unit 10a by rotation, and the first detection unit 12 can detect the alignment of the unit cell 2 located above the first suction unit 10a.

[0051] Specifically, the first detection unit 12 can detect in advance variables related to whether multiple unit cells 2 are stacked in the magazine m in a pre-designed position and posture, and variables related to whether the position and posture of the unit cells 2 have been changed during the shaking operation of the first suction unit 10a to prevent double feeding.

[0052] More specifically, the first detection unit 12 can detect a change in the unit cells 2, such as when a plurality of unit cells 2 are stacked in a misaligned manner in the magazine m. The first detection unit 12 can also detect a change in the unit cells 2, such as when the posture of the unit cells 2 is shifted or the gripping position is changed due to the shaking operation of the first suction unit 10a.

[0053] That is, before the unit cell 2 is moved to the second suction unit 10b, the first detection unit 12 detects the alignment of the unit cell 2, and while the second suction unit 10b receives and rotates the unit cell 2, the upper suction plate 111 of the second suction unit 10b pre-adjusts the suction angle and position, thereby shortening the process time and improving the process efficiency. Also, by detecting the alignment of the unit cell 2 in advance before the rotor unit 11 transfers the unit cell 2, the first detection unit 12 can operate to perform the alignment detection process more precisely, thereby reducing the burden on the subsequent alignment detection process.

[0054] The second detector 13 is positioned below the unit cell 2 attracted at the second position P2 and can detect the alignment of the lower surface of the unit cell 2. That is, the second detector 13 can detect whether the alignment of the unit cell 2 is maintained in the initial arrangement form while the unit cell 2 is being transferred by the rotational motion of the rotor 11. That is, the second detector 13 is positioned on the path of movement of the unit cell 2 and can reconfirm the alignment of the unit cell 2.

[0055] The third detector 14 is located at a third position P3 and can detect the alignment of the unit cells 2 before the unit cells 2 are released. For example, the third detector 14 may be located at either the upper or lower position of the unit cells 2. The detection operation of the third detector 14 reconfirms whether the unit cells 2 are maintained in the planned arrangement or the alignment of the unit cells 2 before they are released at the third position P3. Therefore, when the unit cells 2 are stacked or designed by the release operation, the unit cells 2 are accurately aligned and placed, and the process of the unit cells 2 can be carried out smoothly.

[0056] FIG. 2 is a plan view of a state in which a unit cell 2 is adsorbed to a first adsorption portion 10a according to one embodiment of the present invention, FIG. 3 is a plan view of a state in which an adsorption plate 111 is arranged on one side of a second adsorption portion 10b according to one embodiment of the present invention, and FIG. 4 is a block diagram of a unit cell transfer device 1 according to one embodiment of the present invention.

[0057] The control unit 15 can control the suction and transfer operations of the rotor unit 11 based on the alignment of the unit cells 2 detected by the first detection unit 12. Specifically, the control unit 15 can adjust the suction angle and position of the suction plate 111 located above the second suction unit 10b based on the alignment of the unit cells 2 detected by the first detection unit 12.

[0058] 2, the first detection unit 12 is located above the first suction portion 10a and can detect the alignment of the unit cell 2 that is attached to the upper surface of the first suction portion 10a. As shown in FIG. 2, the first detection unit 12 can detect the alignment of the unit cell 2 that is attached to the upper surface of the first suction portion 10a by rotating a predetermined angle.

[0059] 3, based on the detection information of the first detector 12, the controller 15 can rotate the suction plate 111 located above the second suction unit 10b to align with the unit cell 2, thereby changing the suction position of the suction plate 111. For example, the controller 15 can control the suction plate 111 to not only move three-dimensionally based on the X-axis, Y-axis, and Z-axis, but also to perform pitching, yawing, and rolling movements through articulation. Through such movement of the suction plate 111, the suction plate 111 can change the gripping angle and gripping position to match the unit cell 2 whose position and attitude have been changed, and grip the unit cell 2.

[0060] The control unit 15 adjusts the operation and position of the suction plate 111 according to the alignment detection information of the first detection unit 12, thereby enabling the suction plate 111 to more precisely adsorb and transport the unit cell 2, thereby improving the accuracy and efficiency of the entire process.

[0061] 4, the control unit 15 can determine whether to release the unit cell 2 based on the alignment of the unit cell 2 measured by the second detection unit 13 and the third detection unit 14. That is, the control unit 15 can control the rotor unit 11 to release the unit cell 2 at the third position P3 only if both the alignment value of the unit cell 2 detected by the second detection unit 13 and the alignment value of the unit cell 2 detected by the third detection unit 14 meet the alignment reference value for release. With this function of the control unit 15, the alignment of the unit cell 2 is re-detected and only unit cells 2 with more accurate alignment are released, thereby improving process accuracy and increasing yield.

[0062] The control unit 15 can control the rotor unit 11 to transfer the unreleased unit cells 2 to the fourth position P4. The unit cells 2 transferred to the fourth position P4 can be discarded.

[0063] The following will disclose a method for transferring the unit cells 2. The description will be omitted to the extent that it overlaps with the above-described configuration and concept.

[0064] FIG. 5 is a flowchart of a method for transferring a unit cell 2 according to another embodiment of the present invention.

[0065] Referring to Figure 5, a method for transferring unit cells 2 allows a plurality of unit cells 2 stacked in a magazine m to be picked up and transferred one by one. For example, the unit cells 2 can be transferred along the radius of rotation by rotation while being picked up. During the transfer process of the unit cells 2, the alignment of the unit cells 2 is detected, and unit cells 2 that meet a release criterion can be released at a specific position.

[0066] The method for transferring the unit cell 2 may include a suction step, a first detection step S21, and a transfer step S22.

[0067] In the suction step, the suction unit 10 can suction the unit cells 2 placed on the magazine m. For example, the suction unit 10 may include a first suction unit 10a and a second suction unit 10b. The suction step may include a first suction step S201 and a second suction step S202.

[0068] In the first suction step S201, the first suction unit 10a can suction a unit cell 2 placed on the magazine m. For example, the first suction unit 10a may include a suction pad. With the suction pad holding the unit cell 2 located below, the first suction unit 10a can rotate 180 degrees to move the unit cell 2 upward. The first suction unit 10a can also rotate 90 degrees in the same direction and then transfer the unit cell 2 it has picked up to the second suction unit 10b located on one side.

[0069] In the second adsorption step S202, the second adsorption portion 10b can receive and adsorb the unit cell 2 adsorbed by the first adsorption portion 10a. For example, the second adsorption portion 10b may include an adsorption surface formed to adsorb the unit cell 2. The adsorption surface of the second adsorption portion 10b can adsorb the unit cell 2 by utilizing a vacuum state. By rotating the second adsorption portion 10b while adsorbing the unit cell 2, the unit cell 2 can be moved above the second adsorption portion 10b.

[0070] In the first detection step S21, the first detection unit 12 can detect the alignment of the unit cell 2 adsorbed to the suction unit 10. Specifically, the first detection unit 12 can detect the alignment of the unit cell 2 before the unit cell 2 is transferred from the first suction unit 10a to the second suction unit 10b. For example, the first detection unit 12 may be located at the first position P1, particularly above the first suction unit 10a. That is, the first suction unit 10a adsorbs the unit cell 2 located below the first suction unit 10a and moves the unit cell 2 above the first suction unit 10a by rotation, and the first detection unit 12 can detect the alignment of the unit cell 2 located above the first suction unit 10a.

[0071] FIG. 6 is a flowchart of the transferring step S22 according to another embodiment of the present invention.

[0072] 6, in a transfer step S22, the rotor unit 11 can receive and transfer the unit cells 2 from the suction unit 10. The rotor unit 11 can include at least one rotating blade 110 and at least one suction plate 111. Each rotating blade 110 can rotate about a rotation axis. Each suction plate 111 can adsorb and transfer the unit cells 2.

[0073] The transferring step S22 may include an adjusting step S220, a second detecting step S221, a third detecting step S222, a determining step S223, a releasing step S224, and a discarding step S225.

[0074] In the adjusting step S220, the suction angle and position of the suction plate 111 located above the second suction portion 10b can be adjusted based on the alignment of the unit cell 2 detected by the first detector 12. For example, the first detector 12 is located above the first suction portion 10a and can detect the alignment of the unit cell 2 suctioned and positioned on the upper surface of the first suction portion 10a. The first detector 12 can detect the alignment of the unit cell 2 that has been rotated by a predetermined angle on the upper surface of the first suction portion 10a and suctioned. Based on the detection information of the first detector 12, the control portion 15 can rotate the suction plate 111 located above the second suction portion 10b to match the alignment of the unit cell 2, thereby changing the suction position of the suction plate 111.

[0075] In the second detection step S221, the second detection unit 13 is positioned below the unit cells 2 at the second position P2 to detect the alignment of the lower surfaces of the unit cells 2. That is, the second detection unit 13 can detect whether the alignment of the unit cells 2 is maintained in the initial arrangement form while the unit cells 2 are being transferred by the rotational motion of the rotor unit 11.

[0076] In the third detection step S222, the third detection unit 14 can detect the alignment of the unit cell 2 before the unit cell 2 is released at the third position P3.

[0077] In decision step S223, it can be determined whether or not to release the unit cell 2 based on the alignment of the unit cell 2 detected by the second detection unit 13 and the third detection unit 14. Only when both the alignment value of the unit cell 2 detected by the second detection unit 13 and the alignment value of the unit cell 2 detected by the third detection unit 14 satisfy the alignment reference value for release, can the control unit 15 control the rotor unit 11 to release the unit cell 2 at the third position P3.

[0078] In the release step S224, the unit cell 2 whose release has been determined in the determination step S223 can be released.

[0079] In a discarding step S225, the unit cells 2 that have not been released in the releasing step S224 can be discarded at a fourth position P4.

[0080] The above description merely exemplifies the technical concept of the present invention, and various modifications and variations may be made by a person having ordinary knowledge in the technical field to which the present invention pertains without departing from the essential characteristics of the present invention.

[0081] Therefore, the embodiments disclosed in the present invention are for illustrative purposes only and are not intended to limit the technical idea of ​​the present invention, and the scope of the technical idea of ​​the present invention is not limited by such embodiments.

[0082] The scope of protection of the present invention should be interpreted by the appended claims, and all technical ideas within the scope equivalent thereto should be interpreted as being included in the scope of the present invention. [Explanation of symbols]

[0083] 1. Unit cell transfer device 10 Adsorption part 11 Rotor section 12 First detection unit 13 Second detection unit 14 Third detection unit 15 Control Unit 10a First suction part 10b 2nd suction part 110 Rotating Blade 111 Adsorption plate S201 First adsorption step S202 Second adsorption step S21 First detection step S22 Transfer step S220 Adjustment Step S221 Second detection step S222 Third detection step S223 Decision Step S224 Release Step S225 Disposal Step

Claims

1. 1. A unit cell transfer device for transferring a plurality of unit cells stacked in a magazine, comprising: a suction unit that suctions the unit cell placed on the magazine; a rotor unit that receives the unit cell from the suction unit and moves the unit cell by rotation while suctioning the unit cell; a first detection unit that detects alignment of the unit cell adsorbed to the adsorption unit, The adsorption unit is a first suction portion that suctions the unit cell placed in the magazine; a second suction unit positioned outside the first suction unit to receive the unit cell from the first suction unit and suction the unit cell.

2. The rotor portion is At least one rotor blade that rotates around a rotation axis; 2. The unit cell transfer device according to claim 1, further comprising at least one suction plate connected to one end of each of the rotary vanes, for suctioning and transferring the unit cells.

3. The unit cell transfer device of claim 2 , further comprising a control unit that controls the suction and transfer operations of the rotor unit based on the alignment of the unit cell detected by the first detection unit.

4. 4. The unit cell transfer device of claim 3, wherein the control unit adjusts an adsorption angle and a position of the adsorption plate located above the second adsorption unit based on the alignment of the unit cell detected by the first detection unit.

5. The suction plate is 4. The unit cell transfer device of claim 3, which sequentially moves through a first position for receiving the unit cell from the suction unit, a second position for detecting alignment of the suctioned unit cell, a third position for releasing the suctioned unit cell, and a fourth position for discarding the unit cell not released at the third position.

6. 6. The unit cell transfer device of claim 5, further comprising a second detector located below the unit cell attracted at the second position and detecting alignment of the lower surface of the unit cell.

7. 7. The unit cell transfer device of claim 6, further comprising a third detector located at the third position for detecting alignment of the unit cell before the unit cell is released.

8. 8. The unit cell transfer device of claim 7, wherein the control unit determines whether to release the unit cell based on the alignment of the unit cell measured by the second detection unit and the third detection unit, and controls the rotor unit to transfer the unreleased unit cell to the fourth position.

9. 6. The unit cell transfer device of claim 5, wherein the first detection unit is located at the first position and detects alignment of the unit cell before the unit cell is transferred from the first suction unit to the second suction unit.

10. the first suction portion suctions the unit cell located below the first suction portion and moves the unit cell to an upper side of the first suction portion by a rotational movement; The unit cell transfer device of claim 3 , wherein the first detection unit detects alignment of the unit cell positioned above the first suction portion while positioned above the first suction portion.

11. A unit cell transfer method for transferring a plurality of unit cells stacked in a magazine, comprising: a suction step in which a suction unit suctions the unit cell placed on the magazine; a first detection step in which a first detection unit detects alignment of the unit cell adsorbed to the adsorption unit; a transfer step in which a rotor unit receives the unit cell from the adsorption unit and transfers it; The adsorption step comprises: a first suction step in which a first suction unit suctions the unit cell placed in the magazine; a second suction step of receiving and suctioning the unit cell suctioned by the first suction part with a second suction part.

12. The rotor portion is At least one rotor blade that rotates around a rotation axis; The method for transferring unit cells according to claim 11 , further comprising: at least one suction plate connected to one end of each of the rotary vanes, for suctioning and transferring the unit cells.

13. The transferring step includes:

13. The method of claim 12, further comprising: adjusting an adsorption angle and a position of the adsorption plate located above the second adsorption unit based on the alignment of the unit cell detected by the first detection unit.

14. The suction plate is 13. The method of claim 12, further comprising sequentially moving through a first position for receiving the unit cell from the suction unit, a second position for detecting alignment of the suctioned unit cell, a third position for releasing the suctioned unit cell, and a fourth position for discarding the unit cell not released at the third position.

15. The transferring step includes: a second detecting step in which a second detecting unit is positioned below the unit cell at the second position to detect alignment of the lower surface of the unit cell; 15. The method of claim 14, further comprising a third detecting step in which a third detector detects alignment of the unit cell at the third position before the unit cell is released.

16. The transferring step includes: a determining step of determining whether to release the unit cell based on the alignment of the unit cell detected by the second detection unit and the third detection unit; a release step in which the unit cell whose release has been determined in the determination step is released; 16. The method for transferring unit cells according to claim 15, further comprising a discarding step in which the unit cells not released in the releasing step are discarded at the fourth position.

17. A method for manufacturing an electrode assembly including a unit cell, comprising: transferring the unit cell; The method for manufacturing an electrode assembly, wherein the step is performed by the method for transferring a unit cell according to claim 11 .

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