Electrode supply apparatus and method, and electrode assembly manufacturing apparatus and method

Abstract

The present invention relates to an electrode supply device and method, and an electrode assembly manufacturing device and method.

Description

Technical Field

[0001] This application claims the benefit of the filing date of Korean Patent Application No. 10-2023-0140925, filed with the Korean Intellectual Property Office on October 20, 2023, and all of its contents are incorporated herein by reference.

[0002] The present invention relates to an electrode supply device and method, and an electrode assembly manufacturing device and method using the same.

Background Art

[0003] Unlike primary batteries, secondary batteries are rechargeable and have been extensively studied in recent years due to their potential for miniaturization and increased capacity. With the development of technology and the growing demand for mobile devices, the demand for secondary batteries as an energy source has increased rapidly.

[0004] Secondary batteries are classified into coin-type batteries, cylindrical batteries, prismatic batteries, and pouch-type batteries according to the shape of the battery case. The electrode assembly mounted inside the battery case in a secondary battery is a power generation element capable of charge and discharge, which consists of a laminated structure of electrodes and a separator.

[0005] The electrode assembly can be classified into a jelly-roll type in which a separator is interposed between sheet-like positive and negative electrodes coated with an active material and wound, a stack type in which a plurality of positive and negative electrodes are sequentially laminated with a separator interposed therebetween, and a stack-and-folding type in which unit cells of the stack type are wound with a long separation film. When manufacturing the stack type or stack-and-folding type electrode assembly, a process of supplying a single electrode between the separators is performed. At this time, the electrodes are transported from an electrode magazine part in which a plurality of electrodes are laminated to a stack table or an alignment table for the next process step. In such a manufacturing process of the electrode assembly, attempts have been made to improve the process efficiency and reduce the defect rate.

Prior Art Documents

Patent Documents

[0006] [Patent Document 1] Korean Published Patent No. 10-2013-0132230 [Overview of the project] [Problems that the invention aims to solve]

[0007] The inventors have discovered that the stacking configuration of electrodes stacked in the electrode magazine, for example, the shape of the electrode curl, can change the fixed position of the electrode picked up in the electrode magazine, potentially leading to defects such as two or more electrodes being picked up (incorrect electrode count defects), pickup defects in the electrode pickup unit, or electrode position errors on the stack table or alignment table to which the picked-up electrodes are transported. When such defects occur, a decrease in process yield and operating rate occurs.

[0008] Therefore, the present invention aims to provide an electrode supply device and method, and an electrode assembly manufacturing device and method using the same, which can measure the amount of displacement of the stacked form of electrodes, such as curling, within the electrode magazine, thereby minimizing equipment errors, yield, and operating rate reductions. [Means for solving the problem]

[0009] One embodiment of the present invention is, An electrode magazine section in which multiple electrodes are stacked and housed; A sensor unit for detecting the stacking configuration of electrodes within the electrode magazine; An electrode pickup unit for picking up electrodes in the electrode magazine unit; and A position control unit changes the position of the electrodes in the electrode magazine according to the stacking configuration of the electrodes detected by the sensor unit. The present invention provides an electrode supply device that includes [a specific component].

[0010] Furthermore, one embodiment of the present invention is A sensing stage that detects the stacking configuration of electrodes within an electrode magazine section, where multiple electrodes are stacked and housed; Pickup stage in which electrodes are picked up from the electrode magazine section. Includes, The present invention provides an electrode supply method that further includes a position control step between the sensing step and the pickup step, in which the position of the electrodes in the electrode magazine is changed according to the stacking configuration of the electrodes detected by the sensor unit.

[0011] Furthermore, one embodiment of the present invention is A stacking table on which an electrode assembly, including the first electrode, a separation membrane, and the second electrode, is placed; A first electrode supply unit that supplies the first electrode to the stack table; A second electrode supply unit that supplies the second electrode to the stack table; and Separation membrane supply unit that supplies the separation membrane to the stack table Includes, The invention provides an electrode assembly manufacturing apparatus that includes an electrode supply device according to the above-described embodiment, at least one of the first electrode supply unit and the second electrode supply unit.

[0012] Furthermore, one embodiment of the present invention is The steps include supplying the separation membrane to a stacking table and folding it in a zigzag pattern to stack it; and The step of sequentially supplying a first electrode and a second electrode between the folding separation membrane so that the first electrode and the second electrode are alternately arranged between the folding separation membrane. Includes, The present invention provides a method for manufacturing an electrode assembly, wherein the electrode supply method according to the above-described embodiment is used when supplying at least one of the first electrode and the second electrode. [Effects of the Invention]

[0013] According to an embodiment of the present invention, an electrode supply device and method can accurately pick up a single electrode by detecting a stacked form such as curling of the electrode through a sensor unit before picking up the electrode in the electrode magazine unit, and changing the position of the electrode in the electrode magazine unit according to the stacked form of the electrode. Thereby, defects such as misalignment of different electrodes, pickup defects, or electrode position errors in the stack table or alignment table can be prevented. Thereby, the yield and operating rate of the manufacturing process of the electrode assembly can be improved.

Brief Description of the Drawings

[0014] [Figure 1] It is a diagram illustrating the structure and operating principle of an electrode supply device according to an embodiment of the present invention. [Figure 2] It is a diagram illustrating the position of the sensor unit of an electrode supply device according to an embodiment of the present invention. [Figure 3] It is a diagram illustrating the position of the electrode sensed by an electrode supply device according to an embodiment of the present invention. [Figure 4] It is a diagram illustrating the structure of a manufacturing device for an electrode assembly according to an embodiment of the present invention. [Figure 5] It is a cross-sectional view exemplarily showing an electrode assembly in a zigzag stacking form manufactured by a manufacturing device according to an embodiment of the present invention.

Explanation of Reference Numerals

[0015] 10 ··· Electrode magazine unit 20 ··· Magazine lift 40 ··· Air blower 50 ··· Electrode tab 60 ··· Electrode 71 ··· Electrode pickup unit 41 ··· First sensor unit 42 ··· Third sensor unit 43 ··· Second sensor unit 44 ··· Fourth sensor unit 11 ··· First electrode 12...Second electrode 14...Separation membrane 100 ··· Electrode assembly manufacturing equipment 120...Separation membrane supply section 121 ···Guide Section 122 ···Separation membrane roll 110 ···Stackable Table 150...1st electrode supply section 160...Second electrode supply section 151, 161... Suction head 153, 163...electrode moving part 131, 141 ···Aligned Table A ···Center of the electrode B ···Edge of the electrode [Modes for carrying out the invention]

[0016] The present invention will be described in detail below so that it can be easily implemented by a person with ordinary skill in the art to which the present invention pertains. However, the present invention can be embodied in various different forms and is not limited to the configuration described herein.

[0017] The dimensions and thicknesses of each component shown in the drawings are arbitrary and provided for illustrative purposes only; the present invention is not necessarily limited to those shown.

[0018] In this specification, when a part "includes" a component, this means that, unless otherwise stated, it may include other components rather than excluding them.

[0019] In this specification, "part" means an interface that performs a specific function within an electrode assembly manufacturing apparatus.

[0020] In this specification, when one component is said to be "on top of" another component, this includes not only when it is "immediately above" the other component, but also when there is another component in between. Conversely, when one component is said to be "immediately above" another component, it means that there is no other component in between. Furthermore, being "on top of" a reference component means being located above or below the reference component, and does not necessarily mean being located "above" in the opposite direction of gravity.

[0021] In describing the present invention below, detailed explanations of related prior art that may unnecessarily obscure the essence of the present invention will be omitted.

[0022] <Electrode supply device and method>

[0023] One embodiment of the present invention is, An electrode magazine section in which multiple electrodes are stacked and housed; A sensor unit for detecting the stacking configuration of electrodes within the electrode magazine; An electrode pickup unit for picking up electrodes in the electrode magazine unit; and A position control unit changes the position of the electrodes in the electrode magazine according to the stacking configuration of the electrodes detected by the sensor unit. The present invention provides an electrode supply device that includes the following:

[0024] As shown in Figure 1, an electrode supply device according to one embodiment of the present invention has an electrode magazine section 10 and an electrode pickup section 71 for picking up electrodes in the electrode magazine section. Multiple electrodes 60 are stacked and housed in the electrode magazine section 10. The electrode pickup section 71 can pick up electrodes by vacuum suction. In this case, depending on the stacking configuration of the electrodes, an additional electrode may follow the electrode being picked up during electrode pickup, resulting in a defect where two electrodes are picked up together.

[0025] For example, the electrode supply device may further include an air blower 40 that sprays air onto the electrode picked up by the electrode pickup unit 71, and this air blower can prevent the problem of additional electrodes following the picked-up electrode. However, if a curling phenomenon occurs in the stacked electrodes 60, the air sprayed by the air blower 40 cannot spray air to the appropriate position between the picked-up electrode and the other electrodes, and thus the problem of defects due to uneven layering cannot be effectively prevented.

[0026] Therefore, in the present invention, along with sensor units 41, 42, 43, and 44 that detect the stacking configuration of electrodes, such as curling, a position control unit is provided that changes the position of the electrodes in the electrode magazine according to the stacking configuration of the electrodes detected by the sensor units. This effectively prevents the aforementioned problem of misaligned electrodes and prevents pickup failures, electrode position errors in the stack table or alignment table, etc., that may occur due to misaligned electrodes.

[0027] According to one embodiment, the position control unit is a magazine lift 20 provided at the lower internal end of the electrode magazine section, which adjusts the height of the electrodes based on information about the stacking configuration of the electrodes detected by the sensor section. As shown in Figure 1, the height of the electrodes can be adjusted to be higher or lower by moving vertically according to the information about the stacking configuration of the electrodes detected by the sensor section.

[0028] Specifically, if the electrode supply device further includes an air blower 40 that sprays air onto the electrode picked up by the electrode pickup unit, the position control unit can adjust the height of the electrodes so that air is sprayed between the picked-up electrode and other electrodes.

[0029] According to one embodiment, if the height of the center of the electrode is higher than the edge, the position control unit adjusts the height of the electrode to be higher, and if the height of the center of the electrode is lower than the edge, the position control unit adjusts the height of the electrode to be lower.

[0030] For example, as shown in the left diagram of Figure 1, if the height of the center A of the electrode is higher than the edge B, the position control unit can increase the height of the electrode, thereby spraying air onto the edge of the uppermost electrode, which is relatively lower in height, effectively preventing other electrodes from rising together when the uppermost electrode is picked up. Conversely, as shown in the right diagram of Figure 1, if the height of the center A of the electrode is lower than the edge B, the position control unit can decrease the height of the electrode, thereby spraying air onto the edge of the relatively higher electrode, effectively preventing defects due to mismatched electrodes.

[0031] For example, the sensor unit may be provided to detect the height of the uppermost electrode among a plurality of electrodes stacked in the electrode magazine unit. In this way, the sensor unit may be provided above the electrodes housed in the electrode magazine unit, for example, on a magazine loader, so as to be able to detect the height of the uppermost electrode's upper surface.

[0032] The number and position of the sensor units can be designed as needed, but in order to detect a stacking configuration such as electrode curl, the sensor units may be provided to detect the height of at least two points on the upper surface of the uppermost electrode among the multiple electrodes stacked in the electrode magazine. By detecting the height of at least two points in this way and comparing these heights relatively, information about the stacking configuration such as electrode curl can be obtained.

[0033] If the electrode is rectangular in shape, the sensor unit may be provided to detect the height of at least two points in the longitudinal direction and at least two points in the minor direction on the upper surface of the uppermost electrode among the multiple electrodes stacked in the electrode magazine unit. With this configuration, it is possible to confirm whether the electrode is bent in the longitudinal direction or in the minor direction.

[0034] As a specific example, Figure 2 illustrates the positions of the sensor units 41, 42, 43, and 44.

[0035] The sensor unit may include at least two of the following: a first sensor unit 41 and a second sensor unit 43 that detect the heights of a first edge and a second edge located opposite each other in the longitudinal direction of the upper surface of the uppermost electrode in the electrode magazine unit, and a third sensor unit 42 that detects the height of the center located between the first edge and the second edge. For example, if the sensor unit includes one of the first sensor unit 41 and the second sensor unit 43 and the third sensor unit 42, it is possible to check whether there is a difference in height between the edge and the center of the electrode in the longitudinal direction, thereby checking whether or not there is a curl phenomenon in the longitudinal direction of the electrode. Preferably, the sensor unit may include the first sensor unit 41, the second sensor unit 43 and the third sensor unit 42.

[0036] It is preferable that the first to third sensor units 41, 42, and 43 are provided at the same position from either end in the short axis direction of the uppermost electrode in the electrode magazine. In this case, the curl shape of the electrode in the long axis direction can be accurately detected regardless of the curl shape of the electrode in the short axis direction. For example, as shown in Figure 2, the first to third sensor units 41, 42, and 43 may be provided to detect the height of the center located between the third edge and the fourth edge, which are located opposite each other in the short axis direction of the uppermost electrode in the electrode magazine.

[0037] Furthermore, in addition to the first to third sensor sections, a fourth sensor section 44 may be further included, which detects the height of either the third edge or the fourth edge located opposite each other in the short axis direction of the upper surface of the uppermost electrode in the electrode magazine section, and is at the same distance from the long axis end of the upper surface of the uppermost electrode in the electrode magazine section as at least one of the first to third sensor sections. Figure 2 illustrates a structure in which the fourth sensor section 44 is positioned at the same distance from the long axis end of the electrode as the first sensor section 41, but the fourth sensor section 44 may be positioned at the same distance from the long axis end of the electrode as the second sensor section 43 or the third sensor section 42. If necessary, a fifth sensor section (not shown) may be further included, which detects the height of the remaining third edge or fourth edge located opposite each other in the short axis direction of the upper surface of the uppermost electrode.

[0038] According to one embodiment, the first sensor unit 41 and the fourth sensor unit 44 are provided to detect the heights of the first and fourth edges of the upper surface of the uppermost electrode in the electrode magazine unit, respectively, and the electrode may include an electrode tab 50 provided at the end adjacent to the first edge. Since electrode curling can occur at the edge of the electrode where the electrode tab is provided, by providing the first sensor unit 41 and the fourth sensor unit 44 as described above, the curling of the electrode portion adjacent to the electrode tab can be detected more accurately. Figure 3 illustrates the positions of the electrodes detected by the first to fourth sensor units 41, 42, 43, and 44 in this manner.

[0039] According to one embodiment, an electrode supply device is provided in which the stacked form of the electrodes is in a curled form. The electrode supply device detects the stacked form of the electrodes, such as a curl, via a sensor unit and changes the position of the electrodes in the electrode magazine unit, thereby enabling accurate pickup of a single electrode. This prevents defects such as incorrect electrode placement, pickup failure, or electrode position errors.

[0040] A further embodiment of the present invention provides an electrode supply method comprising a sensing step of detecting the stacking configuration of electrodes in an electrode magazine section that houses a plurality of electrodes stacked on top of each other; and a pickup step of picking up electrodes from the electrode magazine section, further comprising a position control step between the sensing step and the pickup step of changing the position of the electrodes in the electrode magazine section according to the stacking configuration of electrodes detected by the sensor section. By sensing the stacking configuration of electrodes and adjusting the position of the electrodes according to the stacking configuration of electrodes detected thereby, problems such as incorrect electrode placement during electrode pickup can be reduced.

[0041] According to one embodiment, the pickup step includes a step of spraying air onto the electrode to be picked up, and the position control step can adjust the height of the electrodes so that air is sprayed between the electrode picked up in the air spraying step and other electrodes.

[0042] Specifically, when the pickup stage involves spraying air onto the electrode being picked up, the position control stage can effectively prevent misalignment defects by adjusting the height of the electrodes so that air is sprayed between the electrode being picked up in the air spray stage and other electrodes. For example, in the position control stage, if the height of the center of the electrode is higher than the edge, the height of the electrode can be increased, and if the height of the center of the electrode is lower than the edge, the height of the electrode can be decreased. This can be explained by referring to the explanation related to Figure 1 above.

[0043] In the sensing stage, the curl phenomenon can be accurately detected by comparing the relative heights of the electrodes at different positions, including detecting the heights of at least two points on the upper surface of the uppermost electrode among the multiple electrodes stacked in the electrode magazine. For details on detecting the heights of the electrodes at different positions, please refer to the explanations related to Figures 2 and 3.

[0044] <Manufacturing apparatus and method for electrode assemblies>

[0045] An electrode assembly manufacturing apparatus according to one embodiment of the present invention, as shown in Figure 4, includes a stack table 110 on which an electrode assembly including a first electrode, a separation membrane, and a second electrode is placed; a first electrode supply unit for supplying the first electrode to the stack table; a second electrode supply unit for supplying the second electrode to the stack table; and a separation membrane supply unit 120 for supplying the separation membrane to the stack table, wherein at least one of the first electrode supply unit and the second electrode supply unit includes an electrode supply device according to the above-described embodiment.

[0046] For example, the electrode pickup unit 71 of the electrode supply device can directly supply electrodes transported from the electrode magazine unit 10 onto the stack table 110.

[0047] In other examples, the electrode supply device may further include alignment tables 131, 141 and electrode supply units 150, 160 for arranging electrodes transported by the electrode pickup unit 71. The electrode supply units 150, 160 may include suction heads 151, 161 for vacuum-suctioning electrodes 11, 12 and electrode moving units 153, 163 for moving electrodes 11, 12 to a stack table 110.

[0048] For example, the stack table 110 may rotate in the direction of the arrow in Figure 4, in which case the electrode supply units 150 and 160 can rotate in the direction of the arrow to supply the first electrode 11 and the second electrode 12 to the stack table 110.

[0049] The electrode assembly manufacturing apparatus 100 may include a heater (not shown) for heating the electrodes 11 and 12 placed on the alignment tables 131 and 141. The heater can heat the first and / or second electrodes by raising the temperature of the alignment tables 131 and 141 or by raising the temperature of the process atmosphere.

[0050] A method for manufacturing an electrode assembly according to one embodiment of the present invention includes the steps of: supplying a separation membrane to a stacking table and folding and stacking it in a zigzag pattern; and sequentially supplying a first electrode and a second electrode between the folded separation membranes so that the first electrode and the second electrode are alternately arranged between the folded separation membranes, characterized in that the electrode supply method according to the above embodiment is used when supplying at least one of the first electrode and the second electrode.

[0051] An apparatus and method for manufacturing an electrode assembly according to one embodiment of the present invention may include configurations commonly used in the art, except that it includes an electrode supply apparatus or method according to the present invention.

[0052] The electrode assembly manufactured by the apparatus and method for manufacturing electrode assemblies according to embodiments of the present invention includes a first electrode, a separation membrane, and a second electrode, and may have a zigzag stacked structure.

[0053] In this specification, the stacking of a first electrode 11 and a second electrode 12 alternately between zigzag-folded separation membranes 14 is referred to as zigzag stacking. Specifically, the separation membranes are folded back and forth alternately on the left and right sides of the stacking axis, with respect to the stacking axis, and stacked in a zigzag pattern. The first electrode and the second electrode are then stacked alternately on either side of the stacked separation membranes. Here, the stacking axis is a virtual axis parallel to the direction in which the first electrode, separation membrane, and second electrode are stacked, and passing through the center of the stacked material in which the electrodes and separation membrane are stacked.

[0054] The meaning of the first electrode and the second electrode being alternately arranged between the separation membranes is that the separation membranes are stacked in the direction of the stacking axis while overlapping in a zigzag pattern, and one first electrode and one second electrode are alternately stacked in the space (between the separation membranes) created by the overlapping of the separation membranes.

[0055] The zigzag stacked electrode assembly shown in Figure 5 is a power generation element capable of charging and discharging, and has a structure in which a first electrode 11, a separator membrane 14, and a second electrode 12 are alternately stacked and assembled. In this electrode assembly, the separator membrane 14 is folded in a zigzag shape, and the first electrode 11 and the second electrode 12 are alternately arranged between the folded separator membranes 14. The first electrode is the positive electrode and the second electrode is the negative electrode, or the first electrode is the negative electrode and the second electrode is the positive electrode.

[0056] The negative electrode is manufactured by coating and drying a negative electrode slurry containing a negative electrode active material onto at least one surface of a negative electrode current collector, and optionally the negative electrode slurry may further contain additional components such as a conductive material, binder, and solvent. The positive electrode is manufactured by coating and drying a positive electrode slurry containing a positive electrode active material onto at least one surface of a positive electrode current collector, and optionally the positive electrode slurry may further contain additional components such as a conductive material, binder, and solvent. The separation membrane comprises a porous polymer substrate and an organic / inorganic composite porous coating layer formed on at least one side of the polymer substrate, and the organic / inorganic composite porous coating layer may contain particulate binder resin and inorganic particles. The types of the negative electrode active material, positive electrode active material, additional components, and separation membrane, and the methods for manufacturing the positive and negative electrodes can be used without limitation, provided they are known to the art to the extent that the above description applies.

[0057] Although embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and it will be obvious to those with ordinary skill in the art that various modifications and variations are possible without departing from the technical concept of the present invention as described in the claims.

Claims

1. An electrode magazine section in which multiple electrodes are stacked and housed; A sensor unit for detecting the stacking configuration of electrodes within the electrode magazine; An electrode pickup unit for picking up electrodes in the electrode magazine; and A position control unit changes the position of the electrodes in the electrode magazine according to the stacking configuration of the electrodes detected by the sensor unit. An electrode supply device, including one.

2. The electrode supply device according to claim 1, wherein the position control unit is a magazine lift provided at the lower end inside the electrode magazine unit and adjusts the height of the electrodes based on information about the stacking configuration of the electrodes detected by the sensor unit.

3. The electrode supply device according to claim 1, further comprising an air blower for spraying air onto an electrode picked up by the electrode pickup unit, wherein the position control unit adjusts the height of the electrodes so that air is sprayed between the picked-up electrode and other electrodes.

4. The electrode supply device according to claim 1, wherein the position control unit adjusts the height of the electrode to be higher when the height of the center of the electrode is higher than the edge, and adjusts the height of the electrode to be lower when the height of the center of the electrode is lower than the edge.

5. The electrode supply device according to claim 1, wherein the sensor unit is provided to detect the height of the uppermost electrode among a plurality of electrodes stacked in the electrode magazine unit.

6. The electrode supply device according to claim 1, wherein the sensor unit is provided to detect the height of at least two points on the upper surface of the uppermost electrode among a plurality of electrodes stacked in the electrode magazine unit.

7. The electrode supply device according to claim 1, wherein the sensor unit is provided to detect the height of at least two points in the longitudinal direction and at least two points in the minor direction on the upper surface of the uppermost electrode among a plurality of electrodes stacked in the electrode magazine unit.

8. The electrode supply device according to claim 1, wherein the sensor unit includes at least two of the following: a first sensor unit and a second sensor unit that detect the heights of a first edge and a second edge located opposite each other in the longitudinal direction of the upper surface of the uppermost electrode in the electrode magazine unit, and a third sensor unit that detects the height of the central part located between the first edge and the second edge.

9. The electrode supply device according to claim 8, wherein the first to third sensor units are provided to detect the height of the central part located between the third edge and the fourth edge, which are positioned opposite each other in the short axis direction on the upper surface of the uppermost electrode in the electrode magazine unit.

10. The electrode supply device according to claim 8, further comprising at least one of the first to third sensor units and a fourth sensor unit that detects the height of either a third edge or a fourth edge located opposite each other in the short axis direction of the upper surface of the uppermost electrode in the electrode magazine unit, and which is at the same distance from the end in the long axis direction of the upper surface of the uppermost electrode in the electrode magazine unit.

11. The electrode supply device according to claim 10, wherein the first sensor unit and the fourth sensor unit are provided to detect the heights of the first and fourth edges of the upper surface of the uppermost electrode in the electrode magazine unit, and the electrode includes an electrode tab provided at the end adjacent to the first edge.

12. The electrode supply device according to claim 1, wherein the stacked form of the electrodes is a curled form.

13. A sensing step that detects the stacking configuration of electrodes in an electrode magazine section where multiple electrodes are stacked and housed; and Pickup stage in which electrodes are picked up from the electrode magazine section. Includes, An electrode supply method further comprising a position control step between the sensing step and the pickup step, in which the position of the electrodes in the electrode magazine is changed according to the stacking configuration of the electrodes detected by the sensor.

14. The electrode supply method according to claim 13, wherein the pickup step includes a step of spraying air onto the electrode to be picked up, and the position control step adjusts the height of the electrodes so that air is sprayed between the electrode to be picked up in the air spraying step and other electrodes.

15. The electrode supply method according to claim 13, wherein the position control step is performed by raising the height of the electrode when the height of the center of the electrode is higher than the edge, and lowering the height of the electrode when the height of the center of the electrode is lower than the edge.

16. The electrode supply method according to claim 13, wherein the sensing step includes detecting the height of at least two points on the upper surface of the uppermost electrode among a plurality of electrodes stacked in the electrode magazine.

17. A stacking table on which an electrode assembly, including a first electrode, a separation membrane, and a second electrode, is placed; A first electrode supply unit that supplies the first electrode to the stack table; A second electrode supply unit that supplies the second electrode to the stack table; and Separation membrane supply unit that supplies the separation membrane to the stack table Includes, An electrode assembly manufacturing apparatus comprising at least one of the first electrode supply unit and the second electrode supply unit, which includes an electrode supply device according to any one of claims 1 to 12.

18. The steps of supplying the separation membrane to a stacking table and folding it in a zigzag pattern to stack it; and A step in which a first electrode and a second electrode are sequentially supplied between the folding separation membrane so that the first electrode and the second electrode are alternately arranged between the folding separation membrane. Includes, A method for manufacturing an electrode assembly, wherein when supplying at least one of the first electrode and the second electrode, the electrode supply method according to any one of claims 13 to 16 is performed.

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