KR102333754B1 - swing module of electrode assembly manufacturing apparatus - Google Patents

Abstract

Disclosed is a swing module for an electrode assembly manufacturing apparatus. According to the present invention, the swing module for an electrode assembly manufacturing apparatus withdraws a separator material from a separator supply unit while allowing a lamination stage to reciprocally move between a first lamination area where a first electrode is laminated and a second lamination area where a second electrode is laminated. The swing module comprises a stage fixing block to which a lamination stage is coupled and a fixed block driving unit driving the stage fixing block so that the lamination stage moves along a movement trajectory between the first lamination area and the second lamination area. Accordingly, the lamination stage swings along an arc trajectory having a predetermined arc angle and radius of curvature to fold a separator material in a zigzag shape, so that a folded separator body is formed. Through this, the lamination stage and the electrode assembly mounted thereon are transferred while being gradually accelerated and decelerated in the horizontal direction (X direction) and thickness direction (Z direction) of the electrode assembly, so that the separator material can be folded in a zigzag shape. Therefore, the inertia acting on the electrode assembly in the horizontal direction not supported by a folding jig can be reduced, thereby preventing the electrode assembly from being distorted due to the inertia acting in the horizontal direction, stably placing the electrode assembly in a predetermined position, and reducing a stroke distance of the lamination stage to reduce a transport time of the lamination stage and the electrode assembly mounted thereon.

Description

Swing module of electrode assembly manufacturing apparatus

The present invention relates to a swing module of an electrode assembly manufacturing apparatus that moves a lamination stage so that the lamination stage can reciprocate between a first electrode lamination region and a second electrode lamination region.

In general, a secondary battery is a battery that can be used repeatedly through a charging process in the reverse direction to a discharge that converts chemical energy into electrical energy. Examples of secondary batteries include nickel-cadmium (Ni-Cd) batteries, nickel-hydrogen (Ni-MH) batteries, lithium-metal batteries, lithium-ion (Ni-Ion) batteries, and lithium-ion polymer batteries (Li-Ion). Polymer Battery, hereinafter referred to as "LIPB") and the like.

A secondary battery consists of a positive electrode, a negative electrode, an electrolyte, and a separator, and stores and generates electricity by using the voltage difference between different positive and negative materials. Here, discharging is the movement of electrons from the high-voltage cathode to the low-voltage anode (electricity is generated as much as the voltage difference between the anodes), and charging is the movement of electrons from the anode to the cathode again. At this time, the anode material receives electrons and lithium ions It returns to the original metal oxide. That is, when the secondary battery is charged, a charging current flows as metal atoms move from the positive electrode to the negative electrode through the separator. Conversely, when the secondary battery is discharged, the metal atoms move from the negative electrode to the positive electrode and a discharge current flows.

Such secondary batteries are attracting attention as an energy source in the spotlight as they are widely used in IT products, automobile fields, and energy storage fields. In the field of IT products, continuous use of secondary batteries, miniaturization and weight reduction, etc. are required in the field of IT products, and high output, durability, and stability to solve the risk of explosion are required in the field of automobiles. The energy storage field stores surplus power produced by wind power, solar power generation, etc., and as it is used as a stationary type, secondary batteries with more relaxed conditions can be applied.

In particular, research and development of lithium secondary batteries began in the early 1970s, and in 1990, lithium ion batteries using carbon as an anode instead of lithium metal were developed and put to practical use. Lithium secondary batteries are characterized by a cycle life of more than 500 cycles and a short charging time of 1 to 2 hours, and thus have the highest sales elongation among secondary batteries and are light by 30 to 40% compared to nickel-metal hydride batteries. In addition, the lithium secondary battery has the highest unit cell voltage (30 to 37V) and excellent energy density among existing secondary batteries, and thus may have characteristics optimized for mobile devices.

These lithium secondary batteries are generally classified into liquid electrolyte batteries and polymer electrolyte batteries according to the type of electrolyte. A battery using a liquid electrolyte is called a lithium ion battery, and a battery using a polymer electrolyte is called a lithium polymer battery.

In addition, the exterior material of the lithium secondary battery may be formed in various types, and representative types of the exterior material include a cylindrical type, a prismatic type, and a pouch.

An electrode assembly including a positive electrode, a negative electrode, and a separator (separator) interposed between the positive electrode and the negative electrode is provided inside the exterior material of the lithium secondary battery. The electrode assembly is largely classified into a jelly-roll type (winding type), a stack type (laminated type), and the like according to its structure.

On the other hand, in relation to the stack-type electrode assembly, the separator fabric that is continuously supplied is folded in a zigzag shape, and the anode and the cathode are alternately interposed between the separator layers formed by folding the separator fabric in a zigzag shape. A Z-folding method for manufacturing a stacked electrode assembly by laminating it on a fabric has been developed and used.

In the conventional Z-folding method, the separator fabric is fixed to the lamination stage so that the separator fabric can follow the lamination stage and move, and then linearly reciprocate the lamination stage along a straight path using a linear screw, a linear motor, or other linear transfer device. Thus, the membrane fabric is folded in a zigzag shape.

In addition, the conventional Z-folding type method arranges an electrode laminator for laminating a positive electrode or a negative electrode on the distal end of a separator at each of the switching points on both sides of the straight path at which the transport direction of the lamination stage is switched, and one of the switching points along the lamination stage. An electrode is laminated using an electrode laminator on one area of the membrane fabric that is in a stopped state after reaching any one.

In this conventional Z-folding type, it is difficult to accurately place the stacking stage at the switching points due to the tolerance of the linear transfer device, so the transfer time of the stacking stage is long, and the electrode due to the inertia acting in the transfer direction of the stacking stage. The electrode stacker must be placed far away from the transitions so that the assembly is frequently out of position or misaligned, and the electrode assembly that has reached the transitions along the lamination stage and the electrode held in the electrode stacker do not collide. Therefore, there is a problem that a long process time is required to laminate the electrode to the membrane fabric.

In addition, the conventional Z-folding type folds in a zigzag form with the separator fabric in a state where a certain tension is applied to the separator fabric using a dancing roller. However, as described above, in the conventional Z-folding type, the separation membrane fabric is linearly reciprocated along a straight path along the lamination stage, and the distance between the dancing roller and the lamination stage varies according to the position of the lamination stage. That is, when the lamination stage is arranged at the turning points, the distance between the lamination stage and the dancing roller is the maximum, and when the lamination stage is arranged at the intermediate point between the turning points, the distance between the lamination stay and the dancing roller is the minimum do.

According to this conventional Z-folding type, in order to constant the tension applied to the membrane fabric, when the lamination stage moves from any one of the turning points toward the midpoint, the dancing roller is driven to pass through the dancing roller. A part of one membrane fabric must be recovered toward the dancing roller again. For this reason, in the conventional Z-folding type, a pulsation occurs in the separator fabric in the process in which the separator fabric is alternately moved in the forward direction (supply direction) and the reverse direction (recovery direction), thereby causing damage to the separator fabric, and the separator There is a problem in that it is difficult to uniformly maintain the tension applied to the fabric.

Incidentally, in this case, an increase in manufacturing/management cost occurs due to the additional configuration, and even in this case, the separator fabric cannot be transferred only to the lamination stage for stacking the separator, and there is no choice but to move back to the separator supply unit periodically to maintain tension. , there was a problem that the separator was partially torn or scratched during reverse movement.

In other words, the part of the separator fabric drawn out while in contact with the guide roller of the separator supply unit moves in reverse, and the separator fabric is easily torn or scratched due to frictional contact while re-contacting the guide roller again. There was a serious problem that resulted in degradation.

Republic of Korea Patent Publication No. 10-2020-0089452 (published on July 27, 2020)

The present invention has been devised to solve the above-mentioned problems of the prior art, and provides a swing module of an electrode assembly manufacturing apparatus capable of accurately arranging a lamination stage at a preset lamination position of an electrode and reducing the transfer time of the lamination stage aim to

Another object of the present invention is to provide a swing module of an electrode assembly manufacturing apparatus that prevents the electrode assembly from being deviated from or twisted from its original position during the transfer process of the lamination stage.

In addition, the present invention provides a swing module of an electrode assembly manufacturing apparatus that enables the separator fabric to be folded in a zigzag shape in a state in which the separator fabric is supplied toward the lamination stage only in a predetermined supply direction so that pulsation does not occur in the separator fabric. to serve another purpose.

According to one aspect of the present invention, the separation membrane fabric from the separator supply unit while moving the lamination stage so that the lamination stage is reciprocally movable between the first lamination region where the first electrode is stacked and the second lamination region where the second electrode is stacked. a stage fixing block to which the stacking stage is coupled; and a fixed block driving unit for driving the stage fixing block so that the lamination stage moves along a movement trajectory between the first lamination region and the second lamination region.

The movement trajectory may be an arc trajectory.

The fixed block driving unit may include: a rotating arm having one end rotatably coupled to the stage fixed block; and a reciprocating driving unit for rotating the other end of the rotary arm to reciprocate the lamination stage along an arc trajectory.

The reciprocating driving unit may include a support member for supporting the lamination stage so that the lamination stage moves along an arc trajectory while maintaining a horizontal state.

The support member may include: a first support member for supporting the stage fixing block so that the stacking stage can reciprocate in a first direction while the stacking stage moves along the arc trajectory; and a second support member supporting the first support member so that the first support member is reciprocally movable in a second direction forming an angle with the first direction.

The first direction is a direction in which the lamination stage moves up and down between the highest point and the lowest point of the arc trajectory, and the second direction is a direction in which the lamination stage vertically intersects the first direction between one end and the other end of the arc trajectory. can be direction.

The first support member may include a plurality of first moving blocks fixedly coupled to the stage fixing block; and a first support member body in which a plurality of first rails coupled to the first moving block are elongated in the first direction so that the plurality of first moving blocks can slide and reciprocate in the first direction. have.

The second support member may include a base support plate; a plurality of second rails elongated in the second direction on the base support plate; and a second moving block coupled to the second rail at a lower portion of the first support member body so that the first support member body can slide and reciprocate along the second rail.

An elevator may be provided between the stacking stage and the stage fixing block to elevate the stacking stage with respect to the stage fixing block.

According to the swing module of the electrode assembly manufacturing apparatus of the present invention described above, the separation membrane folding body is configured by swinging the lamination stage along an arc trajectory having a predetermined arc angle and a radius of curvature to fold the membrane fabric in a zigzag shape. Through this, the stacking stage and the electrode assembly seated thereon are transferred while gradually accelerating and decelerating in the horizontal direction (X direction) and the thickness direction (Z direction) of the electrode assembly, so that the separator fabric can be folded in a zigzag shape. Therefore, it is possible to reduce the inertia acting on the electrode assembly in the horizontal direction not supported by the folding jig, thereby preventing the electrode assembly from being distorted due to the inertia acting in the horizontal direction, and the electrode assembly can be stably disposed at a predetermined position, and the travel time of the stacking stage and the electrode assembly seated thereon can be reduced by reducing the stroke distance of the stacking stage.

In addition, when the stacking stage swings, the stacking stage is transported while gradually accelerating and decelerating in the Z direction, and the electrode assembly is structurally stable while being compressed in the Z direction, that is, in the thickness direction due to inertia acting in the Z direction. According to the present invention, it is possible to reduce the pressing force for pressing the electrode assembly in the Z direction through the folding jig during the swing of the stacking stage, thereby preventing the electrodes included in the electrode assembly from being damaged due to the pressing force applied from the folding jig. can

In addition, by swinging the lamination stage along an arc trajectory so that small inertia acts on the lamination stage in the X and Z directions, the lamination stage can be accurately placed in the correct position. Even if it is disposed close to the reference point of the region, it is possible to effectively prevent the electrode assembly and the electrodes previously gripped by the transfer devices for stacking the electrode from colliding.

In addition, since the lamination stage is transferred along an arc trajectory, the distance between the lamination stage and the dancing roller is kept constant. Through this, as in the conventional Z-folding type electrode assembly manufacturing apparatus, there is no need to recover the separator fabric toward the dancing roller in order to keep the tension constant, and the tension applied to the separator fabric even if the separator fabric is transported only in a predetermined supply direction. can be kept constant. According to the present invention, it is possible to prevent the separation membrane fabric from being damaged due to pulsation generated in the separator fabric in the process of supplying and recovering the separator fabric, and to precisely control the tension applied to the separator fabric.

In other words, when manufacturing an electrode assembly for a secondary battery by alternately stacking electrodes and separators on the stacking stage while drawing the separator fabric from the separator supply unit and supplying it onto the stacking stage, the separator fabric drawn out during the operation is always stacked By drawing out only to the stage side and not transferring to the separation membrane supply unit side, the separation membrane is transferred to the separation membrane supply unit side to maintain the tension of the separation membrane supply unit. In addition to simplifying the structure of the supply unit, it is possible to dramatically reduce the occurrence of defects in the electrode assembly due to tearing or scratching of the separator during rewinding of the separator.

1 is a front view showing an aspect in which a first swing is performed by a swing module in an electrode assembly manufacturing apparatus including a swing module of the electrode assembly manufacturing apparatus according to a preferred embodiment of the present invention;
2 is a front view showing an aspect in which a second swing is performed by a swing module in the electrode assembly manufacturing apparatus shown in FIG. 1;
3 is a cross-sectional view of the electrode assembly;
Figure 4a is a perspective view showing a swing module of the electrode assembly manufacturing apparatus according to a preferred embodiment of the present invention;
Figure 4b is a front view showing a swing module of the electrode assembly manufacturing apparatus according to a preferred embodiment of the present invention;
5 is a side view showing a swing module of an electrode assembly manufacturing apparatus according to a preferred embodiment of the present invention;
6 is a plan view showing a swing module of an electrode assembly manufacturing apparatus according to a preferred embodiment of the present invention;
7 is a side view showing a coupling relationship between a stage unit and a folding unit in the electrode assembly manufacturing apparatus shown in FIG. 1;
8 is a front view showing the coupling relationship between the stage unit and the folding unit;
9 and 10 are views for explaining a driving method of the folding jig;
11 is a plan view illustrating a coupling relationship between a stage unit and a stacking unit in the electrode assembly manufacturing apparatus shown in FIG. 1 ;
12 to 20 are views for explaining a method of manufacturing an electrode assembly using the electrode assembly manufacturing apparatus shown in FIG. 1;
21 is a speed graph of a stacking stage in a conventional Z-folding type electrode assembly manufacturing apparatus;
22 is a speed graph of a lamination stage in the electrode assembly manufacturing apparatus shown in FIG. 1 .

Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and the scope of the invention to those of ordinary skill in the art will be completely It is provided to inform you. In the drawings, like reference numerals refer to like elements.

1 is a front view showing an aspect in which the first swing is performed by the swing module 30 in the electrode assembly manufacturing apparatus 1, and FIG. 2 is the electrode assembly manufacturing apparatus 1 shown in FIG. It is a front view showing an aspect in which the second swing is performed by the swing module 30 , and FIG. 3 is a cross-sectional view of the electrode assembly.

1 and 2, the electrode assembly manufacturing apparatus 1 including a swing module of the electrode assembly manufacturing apparatus according to a preferred embodiment of the present invention is a separator supply unit 10 for supplying a separator fabric S. ; a stage unit 20 having a lamination stage 22 to which a predetermined base portion Fb of the separation membrane original fabric S is fixed; a swing module 30 for reciprocally swinging the lamination stage 22 along a predetermined arc trajectory P so that the separation membrane fabric S moves while following the lamination stage 22; When the lamination stage 22 swings along the arc trajectory (P), a predetermined folding reference point of the separator fabric (S) is arranged to be caught, and the separator fabric (S) is folded around the folding reference point to form a lamination stage ( 22) a folding unit 40 having a folding jig 41 for forming the separation portion Fs stacked in multiple stages on the base portion Fb fixed to the separation membrane fabric S in stages; When the stacking stage 22 reaches the predetermined stacking position of the arc trajectory P, the separator Fs is formed step by step to form a layered structure on the stacking stage 22 as a separator folding body (F) a lamination unit 50 for laminating an electrode on the uppermost layer of the; and a controller (not shown) for controlling the overall operation of the electrode assembly manufacturing apparatus 1 .

According to this electrode assembly manufacturing apparatus 1, as shown in FIG. 3, in the lamination stage 22, the separator original fabric (S) is folded in a zigzag shape to have a layered structure. A separator folding body (F) and a separator A Z-folding-type electrode assembly A including electrodes interposed one at each of interfaces between the base portion Fb and the separation portions Fs stacked in multiple stages of the folding body F may be formed. .

First, the separation membrane supply unit 10 may include a supply roll, a dancing roller 12 , a guide member 14 , and the like. The supply roll is a supply member for unwinding the separation membrane fabric (S) previously wound in a roll state.

The dancing roller 12 constantly adjusts the tension applied to the separator fabric (S) supplied from the supply roll, and temporarily stores a predetermined length of the separator fabric (S), and then the folding aspect of the separator fabric (S) It is a member that supplies the separation membrane fabric (S) in real time according to the

The dancing roller 12 is installed between the fixed rollers 12a and 12b that are fixedly installed at a predetermined position, and the fixed rollers 12a, 12b, and is variable that is installed reciprocally along a predetermined movement path. It may have a roller 12c and the like.

In particular, as shown in Figure 1, the fixed rollers (12a, 12b) and the variable roller (12c) is installed so that one section of the separation membrane fabric (S) passing through the dancing roller 12 forms a zigzag shape.

The variable roller 12c may temporarily store a section of the separation membrane fabric S supplied from the supply roll while moving to be spaced apart from the fixed rollers 12a and 12b by a predetermined length within the dancing roller 12. . The variable roller 12c is preferably moved to be spaced apart from the fixed rollers 12a and 12b when the folding of the separation membrane fabric S is stopped, but is not limited thereto.

In addition, the variable roller 12c is a fixed roller 12a so as to be close to the fixed rollers 12a and 12b when the separator fabric S is folded while the lamination stage 22 is swinging by the swing module 30 , 12b) can be shifted gradually. However, when the separation membrane fabric (S) is folded, the separation membrane fabric (S) is pulled toward the lamination stage (22). As such, when the separator original fabric is pulled toward the lamination stage 22 due to the folding of the separator fabric S, the variable roller 12c is fixed by a distance corresponding to the length at which the separator fabric S is pulled toward the lamination stage 22 . It is driven to move toward the rollers 12a, 12b, and through this, the dancing roller 12 stores the temporarily stored separation membrane fabric S according to the folding aspect of the separation membrane fabric S, and in the dancing roller 12, the lamination stage ( 22), ie towards a predetermined feeding direction. Such a dancing roller 12 can maintain a constant tension applied to the separation membrane fabric (S) by adjusting the supply length of the separator fabric (S) according to the folding aspect of the separator fabric (S).

In addition, the guide member 14 moves the separation membrane fabric S supplied from the dancing roller 12 while following the lamination stage 22 in a predetermined following pattern when the lamination stage is swinging by the swing module 30 . , is provided to guide the separation membrane fabric (S).

For example, as shown in FIG. 1 , the guide member 14 includes a pair of guide rollers 14a and 14b installed so that the separation membrane fabric S supplied from the dancing roller 12 is interposed in the gap therebetween. can have

As shown in FIG. 1 , the guide rollers 14a and 14b are arranged in the left-right horizontal direction of the lamination stage 22 (hereinafter referred to as 'X direction'), and in the front-rear horizontal direction of the lamination stage 22 (hereinafter referred to as 'X-direction'). In the XYZ coordinate system indicating the 'Y direction') and the height direction of the lamination stage 22 (hereinafter referred to as 'Z direction'), the X coordinate value of the interval between the guide rollers 14a and 14b is the arc The same as the X coordinate value of the central axis C of the arc of the trajectory P, but the Z coordinate values of the guide rollers 14a and 14b are installed to be the same. That is, the guide rollers 14a and 14b are installed so that the interval between the guide rollers 14a and 14b is spaced apart from the circular arc central axis C by a predetermined distance in the +Z direction. When the guide rollers 14a and 14b are installed in this way, as shown in FIGS. 1 and 2 , the separation membrane fabric S supplied from the dancing roller 12 is used to reduce the gap between the guide rollers 14a and 14b. It can pass in the -Z direction. In addition, when the lamination stage 22 is swinging by the swing module 30, the separation membrane fabric S follows the lamination stage 22 while extending in the tangential direction of the circumferential surfaces of the guide rollers 14a and 14b. can be moved

Next, the stage unit 20 may include a stacking stage 22 , an elevator 26 , and the like.

The stacking stage 22 is configured in a plate shape having a larger area than the electrode assembly A to be manufactured using the electrode assembly manufacturing apparatus 1 .

When the separator fabric S is folded, the base portion Fb of the separator fabric S is seated on the upper surface of the lamination stage 22 . It is preferable that the base portion Fb of the separator fabric S is the front end of the separator fabric S, but is not limited thereto.

The stacking stage 22 may have a fixing part (not shown) for vacuum adsorbing and fixing the base part Fb seated on the upper surface as described above. However, the present invention is not limited thereto, and the fixing part may be provided to fix the base part Fb through other fixing means other than vacuum suction.

On the other hand, when the stacking stage 22 is rotated while drawing an arc-shaped trajectory by the swing module 30 to be described later, the upper surface thereof moves along the trajectory while maintaining a horizontal state, and additional description related thereto will be described later.

Next, the elevator 26 is installed on the upper surface of the stage fixing block 31 to be described later to support the lower surface of the stacking stage 22 . That is, the elevator 26 is installed to be positioned between the stacking stage 22 and the stage fixing block 31 .

The elevator 26 includes a body of the elevator 26 fixedly installed on the upper surface of the stage fixing block 31 , a lead screw 26a screwed to the stacking stage 22 , and a fixed installation inside the body of the elevator 26 . and a driving motor (not shown) for rotationally driving the lead screw 26a, the upper end is coupled to the lower surface of the stacking stage 22, and the lower end is movably mounted to the body of the elevator 26 in the Z direction, and the lead screw At least one guide pin 26b for guiding the movement of the lamination stage 22 in the Z direction so that the lamination stage 22 can be raised or lowered according to the rotation direction of the lead screw 26a when the lamination stage 22a is rotated. ), and so on.

The elevator 26 may raise and lower the lamination stage 22 in the +Z direction or the -Z direction through the lead screw 26a according to the folding aspect of the separator fabric S.

Next, the swing module 30 reciprocates the lamination stage 22 along a circular arc trajectory between the first lamination region L1 and the second lamination region L2 so that the separation membrane fabric follows the lamination stage 22 . As to withdraw the separation film to move, the stage fixing block 31 to which the lamination stage 22 is coupled thereto and the fixed block driving the stage fixed block 31 to move the lamination stage 22 along an arc trajectory are driven. unit 32 .

Specifically, the stage fixing block 31 has a stacking stage 22 provided thereon, and a folding jig to be described later is provided on the stage fixing block 31 to press and fix the electrode and the separator, or the stacking stage to perform the same function. (22) may be provided. In addition, in the description of the present invention, although the stage fixing block 31 and the stacking stage 22 are divided, it is needless to say that the stage fixing block 31 and the stacking stage 22 are not divided and may be configured as one configuration. A case in which the folding jig is provided on the stacking stage 22 is illustrated in the related drawings.

4 to 6, the fixed block driving unit 32 includes a rotary arm 32a and a reciprocating driving unit 32b.

One end of the rotary arm 32a is rotatably coupled to the stage fixing block 31, and may be formed in a bar shape.

The reciprocating driving unit 32b rotates the other end of the rotary arm 32a to reciprocate the stacking stage 22 along the arc trajectory P, and a driving motor 33 that is shaft-coupled to the other end of the rotary arm 32a. ) is included. Therefore, by the forward and reverse rotation of the driving motor 33, the stage fixing block 31, that is, the stacking stage 22, is movable along the arc trajectory P, and as shown in FIGS. 1 and 2, the arc trajectory ( Since the arc angle of P) is formed by 180 degrees, the movement trajectory can be made in the form of a semicircle.

The fixed block driving unit 32 may be implemented with various modifications in addition to the structure including the rotating arm 32a and the reciprocating driving unit 32b. For example, a motor-cam structure, a motor-crank arm structure, a cylinder-crank structure, etc. can be variously modified and applied, and these structures can also move the stacking stage 22 in a horizontal state along the arc trajectory P. have.

In the embodiment of the present invention, the reciprocating driving unit 32b includes a support member 34 for supporting the stacking stage 22 so that the stacking stage 22 moves along an arc trajectory P while maintaining a horizontal state. .

4 to 6 , the support member 34 fixes the stage so that the lamination stage 22 can reciprocate in the first direction while the lamination stage 22 moves along the arc trajectory P. The first support member 34a for supporting the block 31, and the first support member 34a to be reciprocally movable along the second direction forming the first direction and a set angle with the first support member (34a) It includes a second support member (35a) for supporting. Here, the first direction is applied to the Z-axis direction, and the second direction is applied to the X-axis direction.

The first direction is a direction in which the lamination stage 22 moves up and down between the highest point and the lowest point of the arc trajectory P, and the second direction is a direction in which the lamination stage 22 moves between one end and the other end of the arc trajectory P. A direction perpendicular to the first direction.

The first support member 34a is first moved so that the plurality of first moving blocks 34b fixedly coupled to the stage fixing block 31 and the plurality of first moving blocks 34b can slide and reciprocate in the Z-axis direction. A plurality of first rails 34c coupled to the block 34b include a first support member body 34d elongated in the Z-axis direction.

The second support member 35a includes a base support plate 35b, a plurality of second rails 35c elongated in the X-axis direction on the base support plate 35b, and a first support member body 34d. It includes a second moving block (35d) coupled to the second rail at the lower portion of the first support member body (34d) to be able to reciprocate slide along the second rail (35c).

That is, when the stage fixing block 31 moves along the arc trajectory P by the rotation of the rotary arm 32a, the stage fixing block 31 holds the first rail 34c of the first support member body 34d. Accordingly, it reciprocates in the Z-axis direction, and the first support member body 34d reciprocates in the X-axis direction along the second rail 35c.

According to the present invention, the stage fixing block 31, that is, the stacking stage 22, follows the arc-shaped movement trajectory through the sliding structure of the first support member 34a and the second support member 35a in the X and Z-axis directions. It can be moved while maintaining a horizontal state at all times while moving.

The arc trajectory P may be determined to have a predetermined arc angle and a radius of curvature. For example, the arc trajectory P has an arc angle of 180°, a radius of curvature R, and a first lamination reference point L1a of the first lamination area L1 corresponding to one end of the arc trajectory P. The XZ coordinate of is (R, 0), the XZ coordinate of the second stacking reference point L2a of the second stacking region L2 corresponding to the other end of the arc trajectory P is (-R, 0), and the arc The XZ coordinate of the bottom dead center of the trajectory P may be determined to be (0, -R).

As such, as the arc trajectory P is determined, the swing module 30 rotates the rotary arm 32a in a predetermined direction (eg, counterclockwise) to fold the separator seated on the stacking stage 22 . A first swing of swinging the lamination stage 22 toward the first lamination region L1 so that the center of the uppermost layer of the sieve F is disposed at the first lamination reference point L1a of the first lamination region L1, and rotation; By rotating the arm 32a in the other direction (eg, clockwise) opposite to the one direction, the center of the uppermost layer of the separator folding body F seated on the lamination stage 22 is located in the second lamination region L2 . A second swing of swinging the stacking stage 22 toward the second stacking region L2 may be alternately performed so as to be disposed at the second stacking reference point L2a of .

By the way, the electrode assembly (A) forms the separator folding body (F) by folding the separator original fabric (S) and stacking the separator parts (Fs) in stages, and the base part (F) included in the separator folding body (F). Since the electrode is interposed at the interfaces of Fb) and the separation portions Fs, the thickness of the electrode assembly A in the Z direction increases step by step according to the intervening aspects of the separation portions Fs and the electrodes. Accordingly, the Z-direction coordinate of the uppermost layer of the separator folding body (F) is gradually changed according to the formation aspect of the electrode assembly (A). If the stacking stage 22 is continuously swinged in the same pattern without considering the change in the Z-direction coordinate of the uppermost layer of the separator folding body F, the first electrode stacking transfer device 52d of the stacking unit 50 to be described later. And as the distance between the transfer member 54d for stacking the second electrode and the uppermost layer of the separator folding body F is gradually reduced, the electrodes held by the transfer devices for electrode stacking and the uppermost layer of the separator folding body F collide There are concerns.

In order to solve this, the above-mentioned elevator 26 is configured such that the Z coordinate value of the uppermost layer of the separator folding body F seated on the lamination stage 22 is maintained at the same value as the Z coordinate value of the circular arc central axis C, The lamination stage 22 may be transferred step by step in the -Z direction according to the folding pattern of the separator fabric S and the lamination aspect of the electrode.

That is, the elevator 26 lowers the stacking stage 22 stepwise in the -Z direction by the increase in the thickness of the electrode assembly A in the Z direction. Then, the swing module 30 alternately performs the first swing and the second swing in the same pattern regardless of the increase in the thickness of the electrode assembly A in the Z direction, so that the uppermost layer of the separator folding body F is first stacked It may be alternately disposed in the region L1 and the second stacked region L2 .

On the other hand, when the first swing and the second swing are performed to arrange the uppermost layer of the separator folding body F in the first stacking area L1 and the second stacking area L2, the guide rollers 14a and 14b Each of the first swing or the second swing may be installed so that the separation membrane fabric (S) extends in a tangential direction from the lowest point of the circumferential surface of the guide rollers (14a, 14b) when the implementation is completed. In particular, the guide rollers (14a, 14b), respectively, when the first swing or the second swing is in a state where the implementation is completed, a specific point of the separation membrane fabric (S) in contact with the lowest point of the circumferential surface of the guide rollers (14a, 14b). It is preferable that the Z coordinate value be installed so as to be the same as the Z coordinate value of the circular arc central axis (C).

That is, the guide rollers 14a and 14b, respectively, when the first swing and the second swing are completed, the separation membrane fabric S is formed between the guide rollers 14a and 14b and the separator folding body F. It is installed so as to be arranged in the +X direction or the -X direction.

Next, the folding unit 40 folds the separation membrane fabric S passing through the guide rollers 14a and 14b in a zigzag shape when the lamination stage 22 is swinging in the first swing and in the second swing to be placed on the lamination stage 22 . It is provided so that it can be laminated|stacked. As described above, in the separation membrane fabric S, the base portion Fb corresponding to the tip is fixed to the lamination stage 22 , and moves while following the lamination stage 22 when the lamination stage 22 swings. .

Accordingly, when a locking member through which the separator fabric S is caught is disposed on the moving path of the separator fabric S, the separator fabric S is folded around a specific portion of the separator fabric S caught by the locking member. have. The folding unit 40 uses the folding principle of the separator fabric S, and the separator fabric S that passes through the guide rollers 14a and 14b when the lamination stage 22 swings along the arc trajectory P. is folded based on a predetermined folding reference point, so that the separation parts Fs stacked in multiple stages in the Z direction on the base part Fb fixed in advance to the lamination stage 22 are formed in stages on the separation membrane fabric S It may be provided with a folding jig 41 to be.

1, 2 and 5 to 10 , the folding jig 41 may include a first folding jig 42 , a second folding jig 43 , and the like.

The first folding jig 42 is disposed so that one end of the uppermost layer of the separator folding body F is caught when the first swing is performed, and the separator passing through the guide rollers 14a and 14b around one end of the uppermost layer By folding the fabric (S), a new separation portion (Fs) may be provided so as to extend from the uppermost layer in the form of covering the electrode stacked in advance on the uppermost layer.

For example, as shown in FIG. 1 , when the first swing is performed so that the stacking stage 22 moves in the counterclockwise direction about the circular arc central axis C, the first folding jig 42 is 1 Right side of the separation unit Fs corresponding to the connection point between the separation unit Fs and the separation membrane fabric S among both ends of the separation unit Fs located on the uppermost layer of the separation membrane folding body F in the current execution round of 1 swing The end may be provided to be selectively caught.

As shown in FIG. 7 , a pair of the first folding jigs 42 is installed so as to be positioned one at a time before and after the stacking stage 22 . Each of the first folding jigs 42 presses the second electrode E2 pre-stacked by a transfer device 54d for stacking the second electrode of the stacking unit 50 to be described later in the separation portion Fs in the -Z direction. It may be configured in a plate shape in which the right end of the separation unit Fs can be caught while being fixed. In addition, the folding unit 40 may further include a pair of first jig transferers 44 for reciprocating the first folding jigs 42 in the Y direction and the Z direction, respectively.

The first jig transferers 44 apply the first folding jigs 42 to the uppermost layer of the separator folding body F in the current implementation round of the first swing only when the first swing is performed, respectively, and the first The first folding jig 42 is pressed so that the stacked second electrode E2 is pressed in the -Z direction and the right end of the separation unit Fs is caught at the same time as the second electrode E2 stacked in the execution cycle of the second swing just before the current execution cycle of the swing can be transported.

Then, when the first swing is performed, the separation membrane fabric (S) is folded counterclockwise around the right end of the separation unit (Fs) corresponding to the folding reference point, and the separation membrane folding body (F) has the previous second second A separation portion Fs that covers the separation portion Fs formed in the execution round of the swing and the second electrode E2 stacked on the separation portion Fs and is stacked in multiple stages on the base portion Fb is newly formed, The newly formed separation portion Fs constitutes a new uppermost layer of the separation membrane folding body F.

In addition, when the first jig transferers 44 are formed so that the newly formed separation portion Fs covers the separation portion Fs formed immediately before, respectively, the first folding jig 42 is the newly formed separation portion ( The first folding jig 42 is transferred to be drawn out from the interface between Fs) and the separation portion Fs formed immediately before.

The second folding jig 43 is disposed so that the other end of the uppermost layer of the separator folding body F is caught when the second swing is performed, and the separator passes through the guide rollers 14a and 14b around the other end of the uppermost layer. By folding the fabric (S), a new separation portion (Fs) may be provided so as to extend from the uppermost layer in the form of covering the electrode stacked in advance on the uppermost layer. For example, as shown in FIG. 1 , when the second swing is performed so that the stacking stage 22 moves in the clockwise direction about the circular arc central axis C, the second folding jig 43 is formed in the second The left end of the separation unit Fs corresponding to the connection point between the separation unit Fs and the separation membrane fabric S among both ends of the separation unit Fs located on the uppermost layer of the separation membrane folding body F in the current round of swing may be provided to be selectively caught.

As shown in FIG. 7 , a pair of these second folding jigs 43 is installed so as to be positioned one at a time before and after the stacking stage 22 . The second folding jigs 43 press and fix the first electrode E1 pre-stacked in the separation unit Fs in the -Z direction by a stacking unit 50 to be described later, respectively, and at the same time as the separation unit Fs. The left end may be configured in a plate shape that can be caught.

In addition, the folding unit 40 may further include a pair of second jig transferers 45 for reciprocating the second folding jigs 43 in the Y direction and the Z direction, respectively. These second jig transferers 45 correspond to the uppermost layer of the separation membrane folding body F in the current implementation round of the second swing only when the second swing is performed by using the second folding jigs 43, respectively. 2 The second folding jig 43 presses the stacked first electrode E1 in the -Z direction in the actual rotation of the first swing immediately before the current execution rotation of the swing and simultaneously engages the left end of the separation unit Fs. ) can be transported. Then, when the second swing is performed, the separation membrane fabric (S) is folded clockwise around the left end of the separation unit (Fs) corresponding to the folding reference point, and the separation membrane folding body (F) has the previous first swing A separation portion Fs that covers the separation portion Fs formed in the implementation round of , and the first electrode E1 stacked on the separation portion Fs, and is stacked in multiple stages on the base portion Fb is newly formed, as The newly formed separation portion Fs constitutes a new uppermost layer of the separation membrane folding body F.

In an embodiment of the present invention, the first jig transporters and the second jig transporters each include a cylinder capable of moving the rod forward and backward in the Y direction, and a cylinder capable of moving the rod forward and backward in the Z direction, and in the Y direction. It can be applied by connecting the cylinder body for Z-direction elevation to the rod end of the cylinder installed in the longitudinal direction to correspond to it.

In addition, when the second jig transferers 45 are formed so that the newly formed separation portion Fs covers the separation portion Fs formed immediately before, respectively, the second folding jig 43 is newly formed separation portion Fs. ) and transfer the second folding jig 43 to be drawn out from the interface between the separation portion Fs formed immediately before.

According to this folding unit 40, when the first swing and the second swing are alternately performed by a predetermined number of times, the separation membrane fabric S using the first folding jig 42 and the second folding jig 43 ) by alternately folding, forming a separator folding body (F) composed of a separator fabric (S) folded in a zigzag shape and including the same number of separator parts (Fs) as in the implementation cycle on the stacking stage (22) can do.

On the other hand, in the folding process of the separation membrane fabric S, when the first swing or the second swing corresponding to the first swing is performed in a state in which the base portion Fb is fixed to the lamination stage 22, the first folding The jig 42 and the second folding jig 43 are disposed to be spaced apart from the base portion Fb by a predetermined distance. In addition, the first folding jig 42 and the second folding jig 43 are formed in a state in which the first electrode E1 or the second electrode E2 is stacked on the base portion Fb, and the subsequent first swing or second From when performing the swing, the separation membrane fabric (S) is driven so that the above-described separation (Fs) is formed step by step.

11 is a plan view showing a coupling relationship between the stage unit 20 and the stacking unit 50 .

Next, the lamination unit 50 is formed on the uppermost layer of the separator folding body F disposed in the first lamination region L1 or the second lamination region L2 when the first swing or the second swing is completed. It is provided so that the electrode E1 or the second electrode E2 can be stacked.

For example, as shown in FIGS. 1 and 2 , the stacking unit 50 may include a first stacking unit 52 and a second stacking unit 54 .

In addition, the first stacking unit 52 is supplied from a first stacking tray 52a on which a plurality of first electrodes E1 having one polarity of a positive electrode and a negative electrode are loaded, and the first stacking tray 52a. The first electrode alignment member 52b for aligning the first electrode E1 in a predetermined alignment form, and the first electrode alignment member 52b after holding the first electrode E1 from the first loading tray 52a ), the first electrode alignment transfer device 52c supplied by being seated on the first electrode alignment member 52c, and the first electrode E1 aligned in a predetermined alignment form from the first electrode alignment member 52b, and then the first swing is completed. A transfer device 52d for stacking the first electrode for stacking on the separation portion Fs corresponding to the current uppermost layer of the separator folding body F disposed in the first stacking region L1 may be provided.

The first electrode alignment transfer device 52c includes a first electrode alignment arm 52e provided to reciprocate a section between the first loading tray 52a and the first electrode alignment member 52b, and a first loading tray In 52a, the first electrode E1 is vacuum-adsorbed and gripped, and then the gripping member for aligning the first electrode is released by the first electrode aligning member 52b to be seated on the first electrode aligning member 52b. can have the back.

This first electrode alignment transfer device (52c) is a first electrode (E1) holding the first electrode (E1) in the first loading tray (52a) in advance when the first electrode alignment member (52b) is in an empty state. may be released from the first electrode alignment member 52b to be seated on the first electrode alignment member 52b. Also, the first electrode alignment member 52b may align the first electrode E1 supplied from the first electrode alignment transfer device 52c in a predetermined alignment shape.

The first electrode stacking transfer member 52d includes a first electrode stacking arm 52g that is provided to reciprocate a section between the first electrode aligning member 52b and the first stacked region L1, and the first electrode alignment After the first electrode E1 aligned in a predetermined alignment form is vacuum-adsorbed and gripped by the member 52b, the grip is released in the first stacking region L1, and separation corresponding to the current uppermost layer of the separator folding body F A holding member 52h for stacking the first electrode stacked on the upper surface of the portion Fs in the Z direction may be provided.

In this first electrode stacking transfer device 52d, when the first swing is completed, the first electrode E1 previously held by the first holding member in the first electrode E1 tray is removed from the uppermost layer of the separator folding body F. In order to face the uppermost layer of the separator folding body (F) in a state spaced apart by a predetermined clearance interval, the first swing waits in advance in the first stacking area (L1) before the first swing is completed.

In addition, when the first swing is completed, the first electrode stacking transfer device 52d releases the gripped first electrode E1 and stacks it on the upper surface of the uppermost layer of the separator folding body F.

On the other hand, it is preferable that the first electrode alignment transfer unit 52c and the first electrode stacking transfer unit 52d are driven in stages according to a predetermined order so as not to collide with each other on the first electrode alignment member 52b.

In addition, the second stacking unit 54 is supplied from a second stacking tray 54a on which a plurality of second electrodes E2 having the other polarity of the positive electrode and the negative electrode are loaded, and the second stacking tray 54a. The second electrode alignment member 54b for aligning the second electrode E2 in a predetermined alignment form, and the second electrode alignment member 54b after holding the second electrode E2 from the second loading tray 54a ) and the second electrode alignment transfer device 54c that is seated and supplied, and the second electrode E2 aligned in a predetermined alignment form from the second electrode alignment member 54b, the second swing is completed, A second electrode stacking transfer device 54d for stacking the second electrode E2 on the separation portion Fs corresponding to the current uppermost layer of the separator folding body F disposed in the second stacking region L2, etc. have.

The second electrode alignment transfer device 54c includes a second electrode alignment arm 54e provided to reciprocate a section between the second loading tray 54a and the second electrode alignment member 54b, and a second loading tray A holding member 54f for aligning the second electrode, which vacuum-adsorbs and grips the second electrode E2 in step 54a and then releases the grip from the second electrode aligning member 54b to seat the second electrode E2 on the second electrode aligning member 54b can have the back.

This second electrode aligning transfer device 54c uses the second electrode E2 previously held in the second loading tray 54a when the second electrode aligning member 54b is in an empty state with the second electrode aligning member ( 54b) may be released to be seated on the second electrode alignment member 54b. Also, the second electrode alignment member 54b may align the second electrode E2 supplied from the second electrode alignment transfer device 54c in a predetermined alignment shape.

The second electrode stacking transfer device 54d includes a second electrode stacking arm 54g that is provided to reciprocate between the second electrode aligning member 54b and the second stacking region L2, and the second electrode alignment The second electrode E2 aligned in a predetermined alignment form is vacuum-adsorbed and gripped by the member 54b, and then released from the grip in the second stacking region L2, and separation corresponding to the current uppermost layer of the separator folding body F A holding member 54h for stacking the second electrode stacked on the upper surface of the portion Fs in the Z direction may be provided.

When the second swing is completed for the second electrode stacking transfer device 54d, the second electrode E2 previously held by the second electrode stacking gripping member 54h in the second loading tray 54a is folded with the separator. In order to face the uppermost layer of the separator folding body (F) in a state spaced apart from the uppermost layer of the sieve (F) by a predetermined clearance distance, the second swing waits in advance in the second stacking area (L2) before the execution is completed. In addition, when the second swing is completed, the second electrode stacking transfer device 54d releases the gripped second electrode E2 and laminates it on the upper surface of the uppermost layer of the separator folding body F.

On the other hand, it is preferable that the second transfer device for aligning the electrodes 54c and the transfer device for stacking the second electrode 54d are driven in stages according to a predetermined order so as not to collide with each other on the second electrode aligning member 54b.

12 to 20 are views for explaining a method of manufacturing the electrode assembly A using the electrode assembly manufacturing apparatus 1 shown in FIG. 1 .

Hereinafter, a method for manufacturing the electrode assembly A using the electrode assembly manufacturing apparatus 1 will be described. For convenience of description, a method of manufacturing the electrode assembly A will be described by taking the case of performing the first swing first as an example.

First, as shown in FIG. 12 , the base portion Fb of the separation membrane fabric S is fixed to the upper surface of the lamination stage 22 by using the fixing portion of the lamination stage 22 ( S10 ).

Next, when the subsequent first swing is completed, the elevator 26 moves the stacking stage 22 so that the base portion Fb can be disposed at the first stacking reference point L1a of the first stacking area L1 - It is lowered by the thickness of the base portion Fb in the Z direction. In addition, as shown in FIG. 12 , the transfer device for first electrode alignment 52c waits in the first loading tray 52a, and the transfer device for stacking the first electrode 52d removes the first electrode E1 . After being gripped by the first electrode aligning member 52b, it waits in the first stacking area L1 so as to be spaced apart from the first stacking reference point L1a of the first stacking area L1 by a predetermined clearance gap, and for second electrode alignment The transfer device 54c holds the second electrode E2 in the second stacking tray 54a and then sits it on the second electrode alignment member 54b, and the second transfer device 54d for stacking the second electrode holds the second electrode E2 in the second stacking area ( It waits in the second stacking area L2 so as to be spaced apart from the second stacking reference point L2a of L2 by a predetermined margin ( S20 ).

Thereafter, as shown in FIGS. 12 and 13 , the swing module 30 performs a first swing to arrange the base portion Fb at the first stacking reference point L1a of the first stacking area L1 . Together with this, as shown in FIG. 13 , the second transfer device for aligning the electrodes 54c waits in the second loading tray 54a, and the transfer device for stacking the second electrodes 54d is the second electrode aligning member 54b. wait in (S30).

Next, as shown in FIG. 14 , the first electrode stacking transfer device 52d stacks the previously held first electrode E1 on the base portion Fb disposed in the first stacking region L1 ( S40 ). ).

Thereafter, as shown in FIG. 15 , the transfer device 52d for stacking the first electrode is spaced apart from the first stacking reference point L1a of the first stacking area L1 by a predetermined clearance interval in the first stacking area L1. and the first folding jig 42 is stacked in step S40 so that the left end of the base portion Fb can be caught by the first folding jig 42 when the subsequent second swing is performed. 1 The electrode E1 is fixed by pressing it in the -Z direction (S50).

Next, in the elevator 26, when the subsequent second swing is completed, the separation portion Fs newly formed due to the subsequent second swing is disposed at the second stacking reference point L2a of the second stacking area L2. Thus, the stacking stage 22 is lowered in the -Z direction by the thickness of the first electrode E1 stacked in step S40 . In addition, as shown in FIG. 15 , the first electrode alignment transfer device 52c holds the first electrode E1 in the first loading tray 52a and then sits on the first electrode alignment member 52b and , The second transfer device for aligning the electrodes 54c waits in the second loading tray 54a, and the transfer device for stacking the second electrodes 54d holds the second electrode E2 by the second electrode aligning member 54b. Afterwards, the second stacking area L2 waits to be spaced apart from the second stacking reference point L2a of the second stacking area L2 by a predetermined margin ( S60 ).

Thereafter, as shown in FIGS. 15 and 16 , the swing module 30 performs a second swing to form a new separation portion Fs with the base portion Fb and the first electrode E1 stacked in step S40. and the newly formed separation portion Fs is disposed at the second stacking reference point L2a of the second stacking region L2. In addition, as shown in FIG. 16 , the first electrode alignment transfer unit 52c is on standby in the first stacking tray 52a, and the first electrode stacking transfer unit 52d is the first electrode alignment member 52b. wait at (S 70).

Next, as shown in FIG. 17 , the second electrode stacking transfer device 54d stacks the previously held second electrode E2 on the separation portion Fs formed in step S70 .

At the same time, the first folding jig 42 is pulled out from the interface between the base portion Fb and the separation portion Fs (S80).

Thereafter, as shown in FIG. 18 , the second electrode stacking transfer member 54d is spaced apart from the second stacking reference point L2a of the second stacking area L2 by a predetermined clearance gap in the second stacking area L2. in the step S80 so that the right end of the separation unit Fs formed in step S70 can be caught by the second folding jig 43 when the subsequent first swing is performed. The stacked second electrode E2 is fixed by pressing it in the -Z direction (S90).

Next, in the elevator 26 , when the subsequent first swing is completed, the separation portion Fs newly formed due to the subsequent first swing is disposed at the first stacking reference point L1a of the first stacking area L1. Thus, the stacking stage 22 is lowered in the -Z direction by a distance corresponding to the thickness and the sum of the thickness of the separation portion Fs formed in step S70 and the thickness and sum of the second electrodes E2 stacked in step S80 . At the same time, as shown in FIG. 18 , the transfer device for aligning the first electrodes 52c waits in the first loading tray 52a, and the transfer device for stacking the first electrodes 52d is the first electrode aligning member 52b. After holding the first electrode E1 in the first stacking region L1, it waits in the first stacking area L1 to be spaced apart from the first stacking reference point L1a of the first stacking area L1 by a predetermined clearance gap, and for aligning the second electrode The transfer device 54c holds the second electrode E2 on the second loading tray 54a and then seats it on the second electrode alignment member 54b (S100).

Thereafter, as shown in FIGS. 18 and 19 , the swing module 30 performs a first swing to form a new separation unit (Fs) with the separation unit (Fs) formed in step S70 and stacked in step S80. While forming to cover the second electrode E2 , the newly formed separation portion Fs is disposed at the first stacking reference point L1a of the first stacking region L1 . In addition, as shown in FIG. 19 , the second transfer device for aligning the electrodes 54c waits in the second loading tray 54a, and the transfer device for stacking the second electrodes 54d is the second electrode aligning member 54b. wait in (S 110).

Next, as shown in FIG. 20 , the transfer device 52d for stacking the first electrode stacks the previously held first electrode E1 on the separation portion Fs formed in step S 110 . At the same time, the second folding jig 43 is drawn out from the interface between the separation unit Fs formed in step S 110 and the separation unit Fs formed in step S 70 ( S 120 ).

Thereafter, again, as shown in FIG. 15 , the transfer device 52d for stacking the first electrodes is spaced apart from the first stacking reference point L1a of the first stacking area L1 by a predetermined clearance gap. ), and the first folding jig 42 is configured so that the left end of the separation unit Fs formed in step S 110 can be caught by the first folding jig 42 when the subsequent second swing is performed. The first electrode E1 stacked in step 120 is fixed by pressing it in the -Z direction (S 130).

Next, in the elevator 26, when the subsequent second swing is completed, the separation portion Fs newly formed due to the subsequent second swing is disposed at the second stacking reference point L2a of the second stacking area L2. Thus, the stacking stage 22 is lowered in the -Z direction by a distance corresponding to the thickness and the sum of the thickness of the separation portion Fs formed in step S110 and the thickness and the sum of the first electrodes E1 stacked in step S120 . With this, again, as shown in FIG. 15 , the first electrode alignment transfer device 52c is seated on the first electrode alignment member 52b after holding the first electrode E1 in the first loading tray 52a. and the second transfer device for aligning the electrodes 52c waits in the second loading tray 54a, and the transfer device for stacking the second electrodes 54d holds the second electrode E2 by the second electrode aligning member 54b. Then, the second stacking area L2 waits so as to be spaced apart from the second stacking reference point L2a of the second stacking area L2 by a predetermined margin ( S140 ).

Thereafter, as shown in FIGS. 15 and 16 , the swing module 30 performs a second swing to form a new separation unit Fs in the separation unit Fs formed in step S 110 and in step S 120 . While forming to cover the stacked first electrode E1 , the newly formed separation portion Fs is disposed at the second stacking reference point L2a of the second stacking region L2 . At the same time, again, as shown in FIG. 16 , the first electrode aligning transfer unit 52c waits in the first stacking tray 52a, and the first electrode stacking transfer unit 52d is the first electrode aligning member 52b. ) and waits (S 150).

According to the electrode assembly manufacturing method as described above, by repeatedly performing steps S80 to S150 for a predetermined number of times, the electrode assembly A including a plurality of separation portions Fs and electrodes may be formed. As described above, in the case of carrying out the folding process of the separation membrane fabric (S) starting with the first swing, the step S80 is the first folding jig 42, the first separation unit formed by the second swing of the first round. It carries out so that it may withdraw|derive from the interface between (Fs) and the base part Fb. However, since the second swing of the second or more rounds is performed, step 80 is the first folding jig 42 formed by the separation portion Fs formed by the second swing of the current round and the first swing of the previous round. It carries out so that it may withdraw|derive from the interface between the separation parts Fs.

21 is a speed graph of the lamination stage in the conventional Z-folding type electrode assembly manufacturing apparatus, and FIG. 22 is a speed graph of the lamination stage 22 in the electrode assembly manufacturing apparatus 1 shown in FIG. 1 .

The conventional Z-folding type electrode assembly manufacturing apparatus is configured to fold the separator fabric in a zigzag shape by linearly reciprocating the lamination stage on which the electrode assembly is seated along a linear path set along the horizontal direction (X direction) of the electrode assembly.

Accordingly, as shown in FIG. 21, in the conventional Z-folding type electrode assembly manufacturing apparatus, the stacking stage and the electrode assembly seated therein are rapidly accelerated and decelerated in the horizontal direction of the electrode assembly not supported by the folding jig while being transported and , the stroke distance in the horizontal direction of the stacking stage and the electrode assembly seated thereon is long. For this reason, in the conventional Z-folding type electrode assembly manufacturing apparatus, large inertia acts on the electrode assembly in the horizontal direction to cause distortion in the inertia direction (horizontal direction) in the electrode assembly, and the stacking stage and the electrode assembly seated thereon The transport time was long, and it was difficult to stably place the lamination stage in a predetermined position.

In addition, the conventional Z-folding type electrode assembly manufacturing apparatus had to press the electrode assembly with a large pressure in the thickness direction using a folding jig in order to prevent the electrode assembly from being distorted due to the large inertia acting in the horizontal direction. , the electrodes included in the electrode assembly were frequently damaged due to a large pressing force applied from the folding jig.

On the other hand, the electrode assembly manufacturing apparatus 1 swings the lamination stage 22 along an arc trajectory P having a predetermined arc angle and a radius of curvature to fold the separator original S in a zigzag shape, thereby forming a separator folding body ( F) constitutes. Accordingly, as shown in FIG. 22 , the electrode assembly manufacturing apparatus 1 uses the stacking stage 22 and the electrode assembly A seated thereon in the horizontal direction (X direction) and the thickness direction (Z direction) of the electrode assembly A. direction) while gradually accelerating and decelerating, the separation membrane fabric (S) can be folded in a zigzag shape. Through this, the electrode assembly manufacturing apparatus 1 can reduce the inertia acting on the electrode assembly A in the horizontal direction that is not supported by the folding jig 41, and through this, due to the inertia acting in the horizontal direction, It is possible to prevent the electrode assembly (A) from being distorted, the electrode assembly (A) can be stably placed in a predetermined position, and the stroke distance of the stacking stage 22 is reduced to reduce the stacking stage 22 and It is possible to reduce the transport time of the electrode assembly (A) seated therein.

In addition, as shown in FIG. 22 , in the electrode assembly manufacturing apparatus 1 , when the stacking stage 22 swings, the stacking stage 22 is transferred while gradually accelerating and decelerating in the Z direction, the electrode assembly (A) is compressed in the Z-direction, that is, in the thickness direction due to inertia acting in the Z-direction, and is structurally stable. Through this, the electrode assembly manufacturing apparatus 1 may reduce the pressing force for pressing the electrode assembly A in the Z direction through the folding jig 41 when the stacking stage 22 swings, the folding jig 41 . It is possible to prevent the electrodes included in the electrode assembly (A) from being damaged due to the pressing force applied from the .

In addition, the electrode assembly manufacturing apparatus 1 swings the lamination stage 22 along the arc trajectory P so that a small inertia acts on the lamination stage 22 in the X and Z directions, thereby fixing the lamination stage 22 . Since it can be precisely positioned at the position, even if the electrode stacking transfer devices 52d and 54d are disposed close to the stacking reference points L1a and L2a of the stacking regions L1 and L2 where the electrodes E1 and E2 are stacked, It is possible to effectively prevent the electrode assembly A and the electrodes E1 and E2 previously gripped by the transfer devices 52d and 54d for stacking the electrodes from colliding with each other.

Accordingly, the electrode assembly manufacturing apparatus 1 may reduce the stroke distance of the transfer devices 52d and 54d for electrode stacking, thereby reducing the time required for electrode stacking. In addition, since the electrode assembly manufacturing apparatus 1 transports the lamination stage 22 along the arc trajectory P, the distance between the lamination stage 22 and the dancing roller 12 is constantly maintained. Accordingly, the electrode assembly manufacturing apparatus 1 is, as in the conventional Z-folding type electrode assembly manufacturing apparatus, the separation membrane original fabric (S) without the need to recover the separator original fabric (S) toward the dancing roller 12 in order to maintain a constant tension. It is possible to maintain a constant tension applied to the separation membrane fabric (S) even by transferring only in a predetermined supply direction. Through this, the electrode assembly manufacturing apparatus 1 can prevent the separator original fabric S from being damaged due to pulsation occurring in the separator original fabric S in the process of supplying and recovering the separator original fabric S, and the separator original fabric S. The tension applied to (S) can be precisely controlled.

The above description is merely illustrative of the technical spirit of the present invention, and various modifications and variations will be possible without departing from the essential characteristics of the present invention by those skilled in the art to which the present invention pertains. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

1: electrode assembly manufacturing apparatus 10: separator supply unit
12: dancing roller 12a, 12b: fixed roller
12c: variable roller 14: guide member
14a, 14b: guide roller 20: stage unit
22: stacking stage
26: elevator 26a: lead screw
26b: guide pin 30: swing module
31: stage fixed block 32: fixed block drive unit
32a: rotary arm 33: drive motor
34: support member 34a: first support member
34b: first moving block 34c: first rail
34d: first support member body 35a: second support member
35b: base support plate 35c: second rail
35d: second moving block
40: folding unit 41: folding jig
42: first folding jig 43: second folding jig
44: first jig transferer 45: second jig transferer
50: stacking unit 52: first stacking unit
52a: first loading tray 52b: first electrode alignment member
52c: transfer device for aligning the first electrode 52d: transfer device for stacking the first electrode
52e: arm for first electrode alignment 52f: gripping member for first electrode alignment
52g: arm for stacking first electrode 52h: gripping member for stacking first electrode
54: second stacking unit 54a: second stacking tray
54b: second electrode alignment member 54c: transfer device for second electrode alignment
54d: transfer device for stacking the second electrode 54e: arm for aligning the second electrode
54f: holding member for aligning the second electrode
54g: arm for stacking second electrode 54h: gripping member for stacking second electrode
S: Separator fabric A: Electrode assembly
F : Separation membrane folding body Fs : Separation part
Fb: base part E1: first electrode
E2: second electrode C: arc trajectory
L1: first stacking area L1a: first stacking reference point
L2: second lamination area L2a: second lamination reference point

Claims (9)

Drawing the original membrane from the separator supply unit while moving the lamination stage so that the lamination stage can reciprocate between the first lamination region where the first electrode is stacked and the second lamination region where the second electrode is stacked,
a stage fixing block to which the stacking stage is coupled; and
and a fixed block driving unit for driving the stage fixing block so that the stacking stage moves along an arc trajectory as a movement trajectory between the first stacking area and the second stacking area;
The fixed block driving unit,
a rotating arm having one end rotatably coupled to the stage fixing block; and
A reciprocating movement driving unit including a support member for rotating the other end of the rotary arm to reciprocate the lamination stage along an arc trajectory, and to support the lamination stage so that the lamination stage moves along an arc trajectory while maintaining a horizontal state includes,
The support member is
a first support member for supporting the stage fixing block so that the lamination stage can reciprocate in a first direction while the lamination stage moves along the arc trajectory; and
and a second support member for supporting the first support member so that the first support member can reciprocate in a second direction forming an angle with the first direction,
The first support member,
a plurality of first moving blocks fixedly coupled to the stage fixed block; and
and a first support member body in which a plurality of first rails coupled to the first moving block are elongated in the first direction so that the plurality of first moving blocks can slide and reciprocate in the first direction. A swing module of an electrode assembly manufacturing apparatus comprising delete delete delete delete According to claim 1,
The first direction is a direction in which the stacking stage moves up and down between the highest point and the lowest point of the arc trajectory,
The second direction is a swing module of the electrode assembly manufacturing apparatus, characterized in that the stacking stage is a direction perpendicular to the first direction between one end and the other end of the arc trajectory. delete According to claim 1,
The second support member,
base support plate;
a plurality of second rails elongated in the second direction on the base support plate; and
and a second moving block coupled to the second rail under the first support member body so that the first support member body can slide and reciprocate along the second rail. swing module. According to claim 1,
A swing module of an electrode assembly manufacturing apparatus, characterized in that a lifter is provided between the lamination stage and the stage fixing block to elevate the lamination stage with respect to the stage fixing block.

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