Transfer device

Abstract

The present invention relates to a transfer device that adsorbs and transfers a cell stack in which a plurality of electrodes and separators are stacked, the transfer device including: a base plate that is movable in a horizontal direction and can be raised and lowered in a vertical direction at a certain point; an adsorption unit that is coupled to a lower part of the base plate and adsorbs an upper surface of the cell stack; and a support unit that is coupled to the base plate and supports a lower part of the cell stack adsorbed to the adsorption unit, the support unit including a vertical moving member that moves up and down, and a rotating member that is coupled to the vertical moving member and rotates to support the cell stack around the coupling portion.

Description

[Technical field]

[0001] The present invention relates to a transfer device, and more particularly to a transfer device that adsorbs and transfers a stack in which a plurality of electrodes and a separation membrane are stacked, and a transfer method using the same.

[0002] This application claims the benefit of priority based on Korean Patent Application No. 10-2022-0068357 dated June 3, 2022, and all contents disclosed in the documents of said Korean patent application are incorporated herein by reference. [Background technology]

[0003] Generally, battery cells are classified into cylindrical battery cells and prismatic battery cells in which an electrode assembly is housed in a cylindrical or prismatic metal case according to the shape of the battery case, and pouch-type battery cells in which an electrode assembly is housed in a pouch-type case made of an aluminum laminate sheet. Among these, there is particularly a lot of interest in pouch-type battery cells, which are easy to modify in shape and lightweight.

[0004] The electrode assembly built into the battery case is a power generating element capable of charging and discharging, which has a laminated structure of a positive electrode / separator / negative electrode, and can be classified into a jelly roll type in which a separator is interposed between a long sheet-like positive electrode and a negative electrode coated with an active material and then wound up, and a stack type in which a number of positive electrodes and negative electrodes of a predetermined size are stacked in sequence with a separator interposed therebetween.

[0005] In addition, to improve the processability of the existing stack type electrode assemblies and meet the demand for various types of battery cells, lamination / stack type electrode assemblies having a structure in which unit cells in which electrodes and separators are alternately stacked and bonded are stacked are also being developed.

[0006] Since such an electrode assembly has a structure in which a plurality of electrodes and a separator are stacked, problems such as the stacked structure being broken or the separator being torn even by a small vibration or impact occurring during handling are likely to occur. Therefore, the electrode assembly is stored with both sides fixed with insulating tape or the like.

[0007] Meanwhile, during the process of transporting the electrode assembly fixed with insulating tape, etc., as described above, there have been many cases where the electrodes or separators included in the electrode assembly have been damaged, resulting in deterioration of the quality of the battery cells.

[0008] A conventional transfer device for transferring an electrode assembly is shown simply in Fig. 1. The conventional transfer device may be composed of a base plate 1 that is movable in all directions of the x, y and z axes, and a suction unit 2 that is coupled to the base plate 1 and suctions the surface of the electrode assembly.

[0009] FIG 2 shows a process of transferring a stack 3 in which a plurality of electrodes and separators are stacked, using the transfer device of FIG 1. As shown in FIG 2(a), the stack 3 has insulating tapes 4 attached to both sides to maintain and fix the stacked structure of the electrodes and separators. The base plate 1, which has moved to the top of the stack 3, descends and adsorbs the top surface of the stack 3 with the suction unit 2, lifts the stack 3 to the top, and transfers it to a desired location. However, as shown in FIG 2(b), the weight of the stack 3 causes looseness between the part directly adsorbed by the suction unit 2 and the part not adsorbed, and in this process, problems may occur in which the electrodes and separators are torn or damaged.

[0010] Therefore, there is a need for a transfer device having a new structure that can prevent the electrodes and separator from being broken and prevent the quality of the secondary battery from deteriorating. [Prior art documents] [Patent documents]

[0011] [Patent Document 1] Korean Patent No. 10-1643036 Summary of the Invention [Problem to be solved by the invention]

[0012] SUMMARY OF THE PRESENTLY PREFERRED EMBODIMENTS The present invention has been made to solve the above-mentioned problems, and has an object to solve the problem of deterioration in the quality of the transferred laminate due to a structural change in the transfer device.

[0013] Other objects and advantages of the present invention can be understood from the following description and will be more clearly understood from the embodiments of the present invention. Also, it will be easily understood that the objects and advantages of the present invention can be realized by the means and combinations thereof as claimed in the claims. [Means for solving the problem]

[0014] According to the present invention, there is provided a transfer device for adsorbing and transferring a stack having a plurality of electrodes and a separation membrane, the transfer device comprising: a base plate movable in a horizontal direction and capable of ascending and descending in a vertical direction at a certain point; an adsorption unit coupled to a lower part of the base plate and adsorbing an upper surface of the stack; and a support unit coupled to the base plate and supporting a lower part of the stack adsorbed to the adsorption unit, the support unit comprising a vertical moving member that ascends and descends up and down, and a rotating member coupled to the vertical moving member and rotating to support the stack from the coupled part as a starting point.

[0015] The suction unit may include a suction pad attached to the surface of the laminate, and a suction tube having both ends coupled to the base plate and the suction pad, respectively, so that the suction pad is fixed to the base plate.

[0016] A plurality of suction units for suctioning each corner of the laminate may be coupled to a lower portion of the base plate.

[0017] The support unit may include fixed members respectively connected to both sides of the base plate and extending downward, a vertical moving member slidably connected to the fixed members and moving up and down, and a rotating member connected to a lower end of the vertical moving member.

[0018] The fixed member includes a vertical guide rail formed to extend vertically on one side thereof, and the vertical moving member is coupled to the fixed member so as to be guided by the vertical guide rail, and the vertical moving member may be guided by the vertical guide rail and move up and down relative to the fixed member.

[0019] The fixed member may include a linear motor, and the vertical moving member may be coupled to the linear motor to move up and down.

[0020] The fixed member includes a pneumatic cylinder, and the vertically movable member is coupled to the pneumatic cylinder and can rise and fall in response to piston movement of the pneumatic cylinder.

[0021] The support unit may be coupled to the base plate so as to be horizontally slidable relative to the base plate.

[0022] The rotating member is axially coupled to an end of the vertically moving member and is rotatable about the axis.

[0023] The rotating member may extend horizontally with respect to the shaft, and a lower portion of the stack sucked by the suction unit may be supported by the rotating member rotating about the shaft.

[0024] The rotating member may include a forwardly sloping ramp on an upper portion.

[0025] The vertically moving member includes a servo motor at an end thereof, and the rotating member is coupled to the servo motor and can rotate about a rotation axis formed in a vertical direction.

[0026] The vertically moving member includes an air motor at an end thereof, and the rotating member is coupled to the air motor and can rotate about a vertically formed axis of rotation.

[0027] At least two rotating members may be coupled to the lower portion of the vertical moving member.

[0028] The base plate may be coupled on one side with a drive device for moving the base plate vertically and horizontally.

[0029] According to the present invention, there is provided a transfer method including a stack preparation step of preparing a stack having a plurality of electrodes and a separation membrane, a transfer device preparation step of preparing the transfer device described in claim 1 on the stack, a suction step of lowering a base plate to suction the stack, a support step of operating a support unit to support a lower portion of the stack, and a lifting step of lifting the base plate.

[0030] The supporting step may include a vertical moving member lowering step of sliding the vertical moving member downward, a rotating member rotating step of rotating the rotating member toward the stack, and a rotating member supporting step of sliding the vertical moving member upward. Effect of the Invention

[0031] According to the present invention, the process efficiency of the secondary battery can be improved by preventing the electrode and separator from being broken during the transfer of the stack. [Brief description of the drawings]

[0032] [Figure 1] 1 shows a conventional transfer device. [Diagram 2] 2 shows a process of transferring a laminate using the transfer device of FIG. 1. [Diagram 3] 1 is a perspective view of a transfer device according to a first embodiment of the present invention. [Figure 4] FIG. 4 is a front view of the transfer device of FIG. 3. [Diagram 5] 4 shows the operation of the support unit. [Figure 6] 13 shows a modified example of the support unit. [Figure 7] 7 shows the operation of the support unit of FIG. 6. [Figure 8] 13 shows a modified example of the rotating member. [Figure 9] The process of adsorption and transport of the laminate is shown step by step. [Figure 10] 13 illustrates a support unit included in a transfer device according to a second embodiment of the present invention. [Figure 11] 13 illustrates an example of the operation of a support unit included in a transfer device according to a third embodiment of the present invention. [Figure 12] 13 illustrates another example of the operation of the support unit included in the transfer device according to the third embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0033] Hereinafter, the preferred embodiment of the present invention will be described in detail with reference to the attached drawings. Before that, the terms and words used in the specification and claims should not be interpreted limitedly to their ordinary or dictionary meanings, but should be interpreted as meanings and concepts that are consistent with the technical idea of ​​the present invention, based on the principle that the inventor can appropriately define the concept of the term to best describe his own invention.

[0034] Therefore, it should be understood that the embodiment described in this specification and the configurations illustrated in the drawings are merely the most preferred embodiment of the present invention and do not represent the entire technical idea of ​​the present invention, and that there may be various equivalents and modifications that can replace them at the time of this application.

[0035] In addition, in the description of the present invention, if it is determined that a specific description of related publicly known configurations or functions may obscure the gist of the present invention, the detailed description will be omitted.

[0036] Since the embodiments of the present invention are provided to more completely explain the present invention to those skilled in the art, the shapes and sizes of components in the drawings may be exaggerated, omitted, or illustrated roughly for clearer explanation. Therefore, the sizes and proportions of each component do not completely reflect the actual sizes and proportions.

[0037] The present invention relates to a transfer device, and more particularly to a transfer device that adsorbs and transfers a stack 10 in which a plurality of electrodes and separators are stacked.

[0038] The laminate 10 has a shape in which electrodes and separators are alternately stacked, and more specifically, the laminate 10 has a shape in which a plurality of negative electrodes and positive electrodes are alternately stacked with a separator interposed between them.

[0039] In addition, the laminate 10 of the present invention may have insulating tape 11 attached to the side so as to fix the laminate structure.

[0040] 3 to 9 relate to a transfer device according to a first embodiment of the present invention, FIG. 10 relates to a transfer device according to a second embodiment of the present invention, and FIGS. 11 to 12 relate to a transfer device according to a third embodiment of the present invention.

[0041] Hereinafter, a transfer device according to each embodiment of the present invention will be described with reference to the above drawings.

[0042] (First embodiment) <Transfer device> FIG. 3 is a perspective view of a transfer device according to a first embodiment of the present invention, and FIG. 4 is a front view of the transfer device of FIG.

[0043] According to above FIG. 3 and FIG. 4, the transfer device of the present invention includes a base plate 100 , a suction unit 200 and a support unit 300 .

[0044] The base plate 100 is installed so as to be freely movable in both horizontal and vertical directions so that the laminate 10 can be transported to a specific area.

[0045] The base plate 100 can move horizontally and can be raised and lowered vertically at a certain point. Referring to Fig. 3, when the xyz coordinate system is used as a reference, the base plate 100 can move in all directions of the xyz axes.

[0046] The base plate 100 is coupled to a separate driving device (not shown) on one side.

[0047] The driving device may be any device or means that moves the base plate 100 in the vertical direction (z-axis direction) and horizontal directions (x-y-axis directions), and the present invention is not particularly limited thereto.

[0048] The suction unit 200 serves to suck the upper surface of the laminate 10 by using a suction force.

[0049] The suction unit 200 is coupled to the lower part of the base plate 100 and moves along the base plate 100 as shown in FIGS.

[0050] The suction unit 200 is composed of a suction pad 220 and a suction tube 210 .

[0051] The suction pad 220 is a portion that is directly attached to the surface of the laminate 10, and is a typical suction or suction pad 220, and any material and shape that can transmit a strong suction force to the surface of the laminate 10 without damaging the surface of the laminate 10 can be used.

[0052] The suction tube 210 is a portion that connects the suction pad 220 and the base plate 100, and has a shape that extends vertically with both ends connected to the base plate 100 and the suction pad 220, respectively.

[0053] The adsorption tube 210 is hollow and includes a gas transfer passage (not shown) through which gas transfers, and the gas transfer passage is connected to a vacuum source (not shown) that provides a suction force. Thus, the adsorption pad 220 communicating with the gas transfer passage adsorbs the surface of the laminate 10 by the operation of the vacuum source. At this time, the gas transfer passage and the vacuum source may be connected via a separate air hose (not shown).

[0054] The vacuum source can be in the form of an air pump or any other device capable of providing a suction force.

[0055] A plurality of the suction units 200 may be coupled to the base plate 100 .

[0056] Since the laminate 10 of the present invention has a rectangular upper surface, it is preferable that at least four of the suction units 200 are attached to the base plate 100, and each suction unit 200 contacts each corner of the laminate 10 to adsorb the laminate 10.

[0057] The supporting unit 300 serves to support the lower portion of the laminate 10 sucked by the suction unit 200 .

[0058] The support unit 300 is coupled to the base plate 100. More specifically, the support units 300 are coupled to both sides of the base plate 100, as shown in Figs.

[0059] The support unit 300 is composed of a fixed member 310 , a vertically moving member 320 , and a rotating member 330 .

[0060] The fixing member 310 is a portion that is directly connected to the base plate 100, and may be connected to at least one of the top and side portions of the base plate 100, and may be connected to both the top and side portions and extended downward as shown in the figure.

[0061] The fixed member 310 does not move up and down relative to the base plate 100 but serves to support and guide the vertically moving member 320 .

[0062] The vertical moving member 320 is characterized in that it moves up and down while being guided by the fixed member 310 .

[0063] The vertical moving member 320 is slidably coupled to the fixed member 310 and moves up and down.

[0064] The vertical moving member 320 can be moved up and down by a driving device such as a linear motor or a pneumatic cylinder.

[0065] FIG. 5 illustrates the operation of the support unit 300.

[0066] 5, the fixed member 310 includes a pneumatic cylinder (not shown), and the vertical moving member 320 is coupled to the pneumatic cylinder and moves up and down according to the movement of a piston (not shown) of the pneumatic cylinder. That is, the vertical moving member 320 is coupled to the piston of the cylinder and moves up and down according to the movement of the piston.

[0067] The pneumatic cylinder is sufficient as long as it has a structure capable of transmitting the pressure of the incoming air to a piston and reciprocating the piston and the vertical moving member 320 connected to the piston in a linear path.

[0068] 6 and 7 show modified examples of the support unit 300. In FIG.

[0069] 6 and 7, the fixed member 310 includes a linear motor (not shown), and the vertical moving member 320 is coupled to the linear motor and moves up and down according to the operation of the linear motor. At this time, the fixed member 310 includes a vertical guide rail 311 extending vertically to guide the movement of the vertical moving member 320, and the vertical moving member 320 moves up and down while being guided by the vertical guide rail 311.

[0070] The linear motor may include a moving element (not shown) that reciprocates along a vertical guide rail 311 having a linear path by the power of electricity supplied thereto, and the vertical moving member 320 is coupled to the moving element and moves up and down in response to the movement of the moving element.

[0071] The linear motor is sufficient as long as it has a structure capable of reciprocating the moving element and the vertical moving member 320 in a linear path by the supplied electricity.

[0072] As shown in FIGS. 3 to 5, the rotating member 330 is connected to the vertical moving member 320, moves up and down according to the movement of the vertical moving member 320, and rotates around the connecting portion with the vertical moving member 320.

[0073] The rotating member 330 is axially connected to an end of the vertical moving member 320 and rotates around the connected axis.

[0074] The rotating member 330 may be extended in a horizontal direction based on the coupled shaft, and the extended portion of the rotating member 330 may rotate around the shaft as a starting point. At this time, the lower portion of the laminate 10 may be supported by the rotation of the rotating member 330.

[0075] The rotating member 330 may also include an inclined surface.

[0076] 8 shows a modified example of the rotating member 330 included in the support unit 300. As shown in FIG 8, the rotating member 330 includes an inclined surface inclined forward on the upper portion.

[0077] The vertical moving member 320 includes a rotation drive 321, such as a servo motor or an air motor, at an end thereof, and the rotation member 330 is coupled with the rotation drive 321.

[0078] Specifically, the vertical moving member 320 may include a servo motor at an end thereof, and the rotating member 330 is coupled to a rotating shaft 321a formed vertically in the servo motor. The rotating shaft 321a may be rotated by electricity supplied to the servo motor, and the rotating member 330 coupled to the rotating shaft 321a rotates around the rotating shaft 321a due to the rotation of the rotating shaft 321a.

[0079] In addition, the vertical moving member 320 may include an air motor at an end thereof, and the rotating member 330 is coupled to a rotating shaft 321a formed vertically in the air motor. The rotating shaft 321a may be rotated by air pressure supplied to the air motor, and the rotating member 330 coupled to the rotating shaft 321a rotates around the rotating shaft 321a by the rotation of the rotating shaft 321a.

[0080] <Transfer method> The transfer method of the present invention is characterized by using the transfer device of the present invention, which includes a base plate 100, a suction unit 200, and a support unit 300.

[0081] The transfer method of the present invention includes a laminate 10 preparation step, a transfer device preparation step, a suction step, a support step, and a lifting step.

[0082] The laminate 10 preparation step is a step of preparing a laminate 10 in which a plurality of electrodes and a separator are laminated.

[0083] The transfer device preparation step is a step of providing a transfer device of the present invention on the prepared laminate 10.

[0084] 9 shows a process of adsorbing and transferring the laminate 10 by the transfer device in stages, that is, FIG. 9 specifically shows the adsorbing step (s1) and supporting steps (s2, s3, s4).

[0085] The suction step (s1) is a step of lowering the base plate 100 to suction the laminate 10.

[0086] 9, the base plate 100 is lowered to a height where the suction pad 220 completely contacts the upper surface of the stack 10. At this time, the rotation member 330 coupled to the lower part of the vertical moving member 320 maintains the horizontality with the vertical moving member 320 in the y-axis direction when the vertical moving member 320 is lowered so as not to contact the upper part of the stack 10.

[0087] After the movement of the base plate 100 is completed, the suction unit 200 sucks and suctions the upper surface of the stack 10.

[0088] The supporting steps (s2, s3, s4) are steps of operating the supporting unit 300 to support the lower part of the laminate 10.

[0089] The supporting step can be divided into a vertical moving member 320 lowering step (s2), a rotating member 330 rotating step (s3), and a rotating member 330 supporting step (s4).

[0090] The vertical moving member 320 descending step (s2) is a step of sliding the vertical moving member 320 downward.

[0091] The base plate 100 rises in a state where the suction unit 200 suctions the stack 10, and at the same time, the vertical moving member 320 descends on the fixed member 310. At this time, the vertical moving member 320 descends until the rotating member 330 is located below the stack 10.

[0092] The rotating member 330 rotating step (s3) is a step of rotating the rotating member 330 toward the stack 10.

[0093] The rotating member 330 rotates toward the stack 10 by the operation of the rotation driving device 321. At this time, the rotating members 330 rotated on both sides of the base plate 100 are symmetrical to each other and maintain the state rotated toward the stack 10.

[0094] The step (s4) of supporting the rotating member 330 is a step of sliding the vertical moving member 320 upward.

[0095] The vertical moving member 320 rises on the fixed member 310 , and the rotating member 330 located under the stack 10 rises together with the vertical moving member 320 to support the lower part of the stack 10 .

[0096] The raising step is a step of raising the base plate 100.

[0097] The base plate 100 rises to the top to transport the laminate 10 to another area while the suction unit 200 suctions the laminate 10 and the support unit 300 supports the adsorbed laminate 10.

[0098] Through the above-mentioned process, the transfer device can safely transfer the laminate 10 supported by the rotating member 330 to a desired location.

[0099] Second embodiment The transfer device according to the second embodiment of the present invention is characterized in that at least two rotation members 330 are coupled to the lower part of the vertical moving member 320 in the transfer device according to the first embodiment.

[0100] FIG. 10 shows a support unit 300 included in a transfer device according to a second embodiment of the present invention.

[0101] 10, a pair of rotation members 330 are coupled to the lower portion of the vertical moving member 320. Specifically, the vertical moving member 320 includes a pair of rotation drivers 321 at its lower end, and the rotation shafts 321a of the rotation drivers 321 rotate in different directions. The rotation member 330 includes a main rotation member 331 coupled to one of the pair of rotation drivers 321 and a sub rotation member 332 coupled to the other one of the pair of rotation drivers 321.

[0102] The main rotating member 331 and the sub rotating member 332 maintain a horizontal position with respect to the vertical moving member 320 based on the y-axis direction when the suction unit 200 is not suctioning the stack 10. After that, when the suction unit 200 suctions the stack 10 and the vertical moving member 320 descends to an appropriate position, the main rotating member 331 and the sub rotating member 332 rotate in different directions.

[0103] Unlike the one shown in FIG. 10, the rotation driving device 321 may be installed at a predetermined interval in the y-axis direction at the bottom of the vertical moving member 320, and the separated main rotating member 331 and sub rotating member 332 may each support a bottom of one side of the stack 10 at a predetermined interval.

[0104] Third embodiment The transfer device according to the third embodiment of the present invention is characterized in that the support unit 300 in the transfer device according to the first embodiment is coupled to the base plate 100 so as to be slidable relative to the base plate 100.

[0105] Specifically, the base plate 100 includes pneumatic cylinders or linear motors on both sides, and the fixing members 310 included in the support unit 300 are coupled to the pneumatic cylinders or linear motors and slide in response to the operation of the pneumatic cylinders or linear motors.

[0106] 11 and 12 show the operation of a support unit 300 included in a transfer device according to the third embodiment of the present invention.

[0107] FIG. 11 above shows an example of the operation of the support unit 300 which slides and moves in the y-axis direction on the base plate 100.

[0108] 11, the fixed member 310 is coupled to a pneumatic cylinder and slides back and forth in response to the movement of a piston (not shown) of the pneumatic cylinder. In this case, the pneumatic cylinder may have any structure capable of transmitting the pressure of the incoming air to the piston to cause the piston and the fixed member 310 coupled to the piston to reciprocate in a linear path.

[0109] FIG. 12 above shows another example of the operation of the support unit 300 which slides on the base plate 100 in the y-axis direction.

[0110] 12, the fixed member 310 slides back and forth in response to the operation of a linear motor. At this time, horizontal guide rails 110 are provided on both sides of the base plate 100 in a horizontal direction to guide the movement of the fixed member 310, and the fixed member 310 slides while being guided by the horizontal guide rails 110.

[0111] The linear motor may include a moving element (not shown) that reciprocates along a horizontal guide rail 110 having a linear path by electricity supplied thereto, and the fixed member 310 is coupled to the moving element and slides in response to the movement of the moving element.

[0112] The linear motor may have any structure capable of reciprocating the movable element and the fixed member 310 in a linear path by the supplied electricity.

[0113] The present invention has been described in more detail above with reference to the drawings and embodiments, etc. However, the configurations described in the drawings or embodiments, etc. in this specification are merely one embodiment of the present invention and do not represent all of the technical ideas of the present invention, so it should be understood that there may be various equivalents and modifications that can replace them at the time of filing this application. [Explanation of symbols]

[0114] 1: (Conventional technology) Base plate 2: (Conventional technology) Adsorption unit 3: (Prior Art) Laminate 4: (Conventional technology) Insulating tape 10: Laminate 11: Insulating tape 100: Base plate 110: Horizontal guide rail 200: Suction unit 210: Adsorption tube 220: Suction pad 300: Support unit 310: Fixing member 311: Vertical guide rail 320: Vertical moving member 321: Rotational drive unit 321a: Rotating shaft 330: Rotating member 331: Main rotating member 332: Sub-rotating member

Claims

1. A transfer device that adsorbs and transfers a stack of a plurality of electrodes and a separation membrane, A base plate that can move horizontally and can be raised or lowered vertically at a certain point; a suction unit coupled to a lower portion of the base plate and adapted to suction an upper surface of the stack; and a support unit coupled to the base plate and supporting a lower portion of the stack adsorbed to the suction unit, The support unit includes: A transfer device comprising: a vertically movable member that moves up and down; and a rotating member that is connected to the vertically movable member and rotates so as to support the stack from a position where the vertically movable member is connected.

2. The adsorption unit is an adsorption pad attached to a surface of the laminate; and The transfer device of claim 1 , further comprising a suction tube, both ends of which are coupled to the base plate and the suction pad, respectively, so that the suction pad is fixed to the base plate.

3. The transfer device according to claim 1 , wherein a plurality of suction units for suctioning each corner of the stack are coupled to a lower portion of the base plate.

4. The support unit includes: fixing members respectively coupled to both sides of the base plate and extending downward; a vertically movable member slidably coupled to the fixed member and movable up and down; The transfer apparatus of claim 1 including a rotating member coupled to a lower end of said vertically moving member.

5. The fixing member includes a vertical guide rail extending vertically on one side thereof, the vertical moving member is coupled to the fixed member so as to be guided by the vertical guide rail; The transfer device according to claim 4 , wherein the vertically movable member is guided by the vertical guide rail and moves up and down relative to the fixed member.

6. the fixed member includes a linear motor; The transfer device of claim 5 , wherein the vertically moving member is coupled to the linear motor to move up and down.

7. The fixing member includes a pneumatic cylinder; 5. The transfer device of claim 4, wherein the vertically moving member is coupled to the pneumatic cylinder and moves up and down in response to piston movement of the pneumatic cylinder.

8. The transfer device according to claim 1 , wherein the support unit is coupled to the base plate so as to be horizontally slidable relative to the base plate.

9. The rotating member is axially connected to an end of the vertically moving member, The transfer device of claim 4 , which rotates about said coupled axis.

10. The rotating member is formed to extend horizontally with respect to the axis, The transfer device according to claim 9 , wherein the laminate sucked by the suction unit is supported at a lower portion by the rotating member which rotates about the axis.

11. The transfer device of claim 9 , wherein the rotating member includes a forwardly sloping ramp on an upper portion thereof.

12. the vertical movement member includes a servo motor at an end thereof; The transfer device according to claim 9 , wherein the rotating member is coupled to the servo motor and rotates about a rotation axis formed in a vertical direction.

13. the vertical movement member includes an air motor at an end thereof; 10. The transfer device of claim 9, wherein the rotating member is coupled to the air motor and rotates about a vertically oriented axis of rotation.

14. The transfer device according to claim 1 , wherein at least two rotating members are coupled to a lower portion of the vertically moving member.

15. The transfer device according to claim 1 , wherein the base plate is coupled on one side with a driving device for moving the base plate vertically and horizontally.

16. A stack preparation step of preparing a stack having a plurality of electrodes and a separator; A transfer device preparation step of providing a transfer device according to any one of claims 1 to 15 on the stack; a suction step of lowering a base plate to suction the laminate; a supporting step of operating a support unit to support a lower portion of the stack; and The method includes a raising step of raising the base plate.

17. The supporting step includes: a vertically movable member lowering step in which the vertically movable member is slid downward; a rotating member rotating step of rotating a rotating member toward the stack; and The method of claim 16, further comprising a rotating member supporting step of sliding the vertically moving member upward.

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