KR20200031348A - Stacker for secondary battery - Google Patents

Abstract

The present invention relates to a secondary battery and, more specifically, to a secondary battery stacking device which sequentially stacks a first electrode and a second electrode by interposing a separation film forming a secondary cell. The secondary battery stacking device, in which a separation film (20) is interposed and a first electrode sheet (11) and a second electrode sheet (12) are sequentially stacked, includes: at least one stage (100) supporting a stacked body (1) in which the first electrode sheet (11) and the second electrode sheet (12) are sequentially stacked with the interposed separation film (20); an electrode sheet supply unit (300) arranged in one side of the stage (100) and having a plurality of first electrode sheets (11) and a plurality of second electrode sheets (12) stacked therein; a separation film supply unit (400) installed to face the electrode sheet supply unit (300) based on the stage (100) and supplying each separation film (20) of a preset size; an electrode sheet transfer unit (510) transferring the first electrode sheets (11) and the second electrode sheets (12) from the electrode sheet supply unit (300) to the stage (100); and a separation film transfer unit (520) transferring the separation film (20) to the stage (100) from the separation film supply unit (400). The separation film supply unit (400) of the electrode stacking device supplies each separation film (20) cut at a set size from a separation film roll (21). The present invention can rapidly supply a separation film to significantly increase productivity.

Description

Secondary battery stacking device {Stacker for secondary battery}

The present invention relates to a secondary battery, and more particularly, to a secondary battery stacking device for sequentially stacking a first electrode and a second electrode through a separator forming a secondary battery cell.

In general, a chemical battery is a battery composed of a pair of electrodes and an electrolyte of a positive electrode and a negative electrode, and the amount of energy that can be stored varies depending on the materials constituting the electrode and the electrolyte.

These chemical cells are classified into primary batteries that are used only for one-time discharge because of a very slow charging reaction, and secondary batteries that can be reused through repeated charging and discharging.

Secondary batteries are applied in various technical fields throughout the industry, and are used as energy sources for advanced electronic devices such as wireless mobile devices, as well as air pollution of existing gasoline and diesel internal combustion engines using fossil fuels. It is also attracting attention as an energy source for hybrid electric vehicles, which is being proposed as a solution to this problem.

The secondary battery is manufactured in various ways depending on the shape of the case housing the electrode assembly, and there are cylindrical, prismatic, and pouch shapes as typical shapes.

Typically, a cylindrical secondary battery uses a cylindrical aluminum can, a prismatic secondary battery uses a rectangular aluminum can, and the pouch-type secondary battery is sealed with a thin aluminum laminate film made of aluminum or the like in a pouch in the form of a pack. As it is relatively lightweight and has excellent stability, it has been widely used in recent years.

As an example, looking at the configuration of the pouch-type secondary battery, a stack comprising an electrode assembly made of a separator between a negative electrode and a positive electrode interposed therebetween, and an aluminum-laminate film to seal the stack therein. Consisting of a pouch, one end is connected to the stack and the other end is exposed to the outside of the pouch and is composed of an electrode tab for negative and positive electrodes to induce current to the outside.

On the other hand, in alternately laminating the separator and the electrode sheets, the yield is determined by the lamination method of the separator and the electrode sheet, in which the lamination speed is determined according to the material, thickness, and shape of the separator.

In particular, the thickness of the separator becomes thinner, and the process of laminating a sheet of separator on an electrode sheet is one of the important processes for determining the production speed in the process of manufacturing a secondary battery.

The object of the present invention, by recognizing the problems and importance as described above, by sequentially supplying the separator in a single layer when the electrode sheet and the separator are sequentially stacked, it is possible to supply the separator more quickly, so that the secondary battery stacking device can greatly improve productivity. To provide.

The present invention was created to achieve the object of the present invention as described above. In the present invention, the first electrode sheet 11 and the second electrode sheet 12 are sequentially stacked while the separator 20 is interposed. A secondary battery stacking apparatus comprising: one or more stages 100 supporting a stacked body 1 in which the first electrode sheet 11 and the second electrode sheet 12 are sequentially stacked while the separator 20 is interposed; An electrode sheet supply unit 300 disposed on one side of the stage 100 and having a plurality of first electrode sheets 11 and a plurality of second electrode sheets 12 stacked; A separator supply unit 400 which is installed opposite to the electrode sheet supply unit 300 based on the stage 100 and supplies a separator 20 of a preset size in a single sheet; An electrode sheet transfer unit 510 for transferring the first electrode sheets 11 and the second electrode sheets 12 from the electrode sheet supply unit 300 to the stage 100; It includes a separation membrane transfer unit 520 for transferring the separation membrane 20 from the separation membrane supply unit 400 to the stage 100, the separation membrane supply unit 400 is cut to a predetermined size from the separation membrane roll 21 Disclosed is an electrode stacking device characterized in that the separator 20 is supplied as a single sheet.

The separator supply unit 400 includes a separator sheet supply unit 410 in which the separator roll 21 in which the separator is wound with a continuous sheet 22 is rotatably installed; A sheet fixing seating portion 430 receiving the continuous sheet 22 from the separator sheet supplying portion 410 and fixing it on the bottom surface; In a state where the continuous sheet 22 is fixed, the continuous sheet 22 fixed to the seat fixing seat 430 is cut to a predetermined width in the longitudinal direction of the continuous sheet 22 to obtain a separator 20 of a preset size. It includes a sheet cutting portion 420 to be formed, and the separator transfer unit 520 may transfer the cut separator 20 of the sheet cutting unit 420 to the stage 100.

The separator sheet supply unit 410 is installed on the movement path of the continuous sheet 22 between the separator fixing seat 430 from the separator roll 21 to separate the separator roll 21 to guide the movement of the continuous sheet 22. ) May include one or more guide rods 412 and 413 disposed parallel to the rotational axis direction.

The separation membrane transfer unit 520 can be fixed by adsorbing on the upper surface of the continuous sheet 22 using a vacuum pressure by surface contact.

The sheet cutting part 420 includes a vacuum adsorption part 421 that adsorbs and fixes the top surface of the continuous sheet 22 by using a vacuum pressure by surface contact; It may include a separation membrane cutting portion 422 coupled to the vacuum adsorption unit 421 to cut the continuous sheet 22 adsorbed to the vacuum adsorption unit 421.

The secondary battery stacking apparatus according to the present invention has an advantage in that the electrode sheets and the separators are sequentially stacked, so that the separators can be supplied more quickly by supplying the separators individually, thereby significantly improving productivity.

Particularly, in the secondary battery lamination apparatus according to the present invention, in the supply of the separator, the supply of the separator interposed between the electrode sheets can be more smoothly performed by cutting, that is, cutting and supplying a sheet to a predetermined size from a roll wound with a continuous sheet. There is an advantage.

In addition, the secondary battery stacking apparatus according to the present invention, the separator / electrode sheet stacking process and pressing by alternately moving the stacking position and the pressing position to alternately move the stage supporting the separator / electrode sheet stack so that the separator and the electrode sheet are sequentially stacked. There is an advantage that can significantly improve productivity by performing the process efficiently.

In particular, the separation position of the separation membrane / electrode sheet is efficiently performed by setting the pressing position in a pair around the separation position of the separation membrane / electrode sheet and arranging the stages in a pair so that the lamination process and the pressing process can be performed alternately. There is an advantage that can significantly improve productivity by performing.

1 is a plan view showing a secondary battery stacking device according to the present invention.
FIG. 2 is a front view of the secondary battery stacking apparatus of FIG. 1 viewed from the Y-axis direction showing a main configuration.
3A and 3B are side views, as viewed from the X-axis direction, showing the main configuration of the secondary preposition stacking apparatus of FIG. 1, respectively, and are side views showing the movement of the stage.
4 is a front view showing a separation membrane cutting unit and a separation membrane support unit in the secondary battery stacking apparatus of FIG. 1.
5A to 5D are side views showing the separation membrane cutout of FIG. 4.

Hereinafter, a secondary battery stacking device according to the present invention will be described with reference to the accompanying drawings.

The secondary battery stacking apparatus according to the present invention is a secondary battery stacking apparatus in which the first electrode sheet 11 and the second electrode sheet 12 are sequentially stacked while the separator 20 is interposed, while the separator 20 is interposed. One or more stages 100 for supporting the stacked body 1 in which the first electrode sheet 11 and the second electrode sheet 12 are sequentially stacked; An electrode sheet supply unit 300 disposed on one side of the stage 100 and stacked with a plurality of first electrode sheets 11 and a plurality of second electrode sheets 12; A separator supply unit 400 installed opposite to the electrode sheet supply unit 300 based on the stage 100 and supplying a separator 20 of a preset size in a single sheet; An electrode sheet transfer unit 510 for transferring the first electrode sheets 11 and the second electrode sheet 12 from the electrode sheet supply unit 300 to the stage 100; And a separation membrane transfer unit 520 for transferring the separation membrane 20 from the separation membrane supply unit 400 to the stage 100.

Here, the stacked body (1), the first electrode sheet 11 and the second electrode sheet 12 are alternately stacked while being alternately separated between the first electrode sheet 11 and the second electrode sheet 12 (20) ) Is located to be configured as an electrode assembly, various configurations are possible.

The laminate 1 may be accommodated in a pouch made of an aluminum-laminate film and become a basic unit of a secondary battery.

The first electrode sheet 11 forms a positive electrode, the second electrode sheet 12 forms a negative electrode, or the first electrode sheet 11 forms a negative electrode and the second electrode sheet 12 forms a positive electrode. .

For example, when the first electrode sheet 11 is made of Cu material and the second electrode sheet 12 is made of Al material, the first electrode sheet 11 forms a positive electrode, and the second electrode sheet 12 Can form a negative electrode.

The first electrode sheet 11 and the second electrode sheet 12 may be processed into a rectangular sheet having a preset length and width.

At this time, the first electrode sheet 11 and the second electrode sheet 12 may be provided so that the electrode tabs constituting the positive electrode and the negative electrode of the laminate 1 protrude to the outside of the separator 20 during lamination.

The separator 20 is positioned between the first electrode sheet 11 and the second electrode sheet 12 of the laminate 1 to separate the first electrode sheet 11 and the second electrode sheet 12. It is a separator.

The separation film 20 is positioned between the first electrode sheet 11 and the second electrode sheet 12 to completely separate the first electrode sheet 11 and the second electrode sheet 12 from the first electrode sheet (11) and the second electrode sheet 12 is preferably processed into a rectangular sheet having a larger length and a larger width.

Therefore, in the stacked structure of the stacked body 1, the first electrode sheets 11 and the second electrode sheets 12 may be disposed in an inner central portion excluding the outer edge portion of the separator 20.

The stage 100 is a configuration that supports the stacked body 1 in which the first electrode sheet 11 and the second electrode sheet 12 are sequentially stacked while the separator 20 is interposed, and various configurations are possible.

Here, the laminate 1 is formed by sequentially stacking the separator 20, the first electrode sheet 11, the separator 20, and the second electrode sheet 12, and the planar shape is formed in a rectangular shape. It is common.

Accordingly, the stage 100 may have various shapes and structures for stable lamination and support of the laminate 1.

On the other hand, a separation layer 20, a first electrode sheet 11, a separation membrane 20, and a second electrode sheet 12 are stacked in a predetermined number of layers on the stage 100, and the laminate 1 is compressed. It is desirable to be compact.

Thus, the secondary battery stacking apparatus according to the present invention, as shown in Figure 1, it is preferable to further include a cell pressing unit 200 for pressing the stacked body (1) seated on the stage 100 from the upper side Do.

The cell pressing unit 200 is configured to press the stacked body 1 seated on the stage 100 from the upper side, and various configurations are possible.

As an example, the cell pressing part 200 is installed to be able to move up and down for compression of the stacked body 3 seated on the stage 100, and a pressing member for pressing by surface contact on the upper surface of the stacked body 1 It may include.

In addition, since the pressing member is preferably pressurized by thermocompression bonding, a heating unit for heating the pressing member may be installed.

The heating unit may be configured in various ways depending on the heating method, such as an electric heater or a flow path formed so that a heating medium flows inside the pressing member.

The laminate 1 made of the separator 20, the first electrode sheet 11, the separator 20, and the second electrode sheet 12 by thermal compression by the cell pressing unit 200 is compact and robust. Is integrated.

On the other hand, the cell pressing part 200 is installed on the upper portion of the stage 100, the pressing process for pressing after completion of the lamination of the laminate 1 may be performed by hand, but in this case, the laminating process when performing the pressing process There is a problem in that it is difficult to perform the entire lamination process.

Thus, as an embodiment, the stage 100 is installed to be reciprocally moved between the stacking position and the pressing position set in the Y-axis direction, and when the stage 100 is positioned at the stacking position, the separator 20, the first The stacking process of the electrode sheet 11, the separator 20, and the second electrode sheet 12 is performed, and when the stage is moved to the pressing position, that is, the pressing part 200 is installed, the cell pressing part 200 is positioned. ) Can be performed.

In particular, in order to efficiently perform the lamination process, the pressurization position, that is, the position where the cell pressing unit 200 is installed, is as shown in FIG. 1. It is set to the pressing position, and the stage 100 is composed of the first stage 110 and the second stage 120, so that the second stage 120 when the first stage 110 is positioned in the stacked position It is located in the second pressing position, and may be located in the second stage 120 when the first stage 110 is positioned in the first pressing position.

On the other hand, the laminate 1, which has been thermally compressed in the pressing position, may be transferred to an unloading unit (not shown) by a transport unit (not shown) separately installed in the pressing position.

In addition, the laminate 1, which has been thermally compressed at the pressing position, may be transferred to the unloading unit (not shown) by the electrode sheet transport unit 510, which will be described later, after being moved to the stacking position.

Here, the unloading unit is a structure in which lamination 1 in which lamination and thermocompression is completed are sequentially stacked, and various configurations such as a cassette and a rack are possible depending on the lamination method of the lamination 1.

The electrode sheet supply unit 300 is disposed on one side of the stage 100, and a plurality of first electrode sheets 11 and a plurality of second electrode sheets 12 are stacked. Therefore, various configurations are possible.

For example, the electrode sheet supply unit 300 includes a support plate for supporting a certain number of stacked electrode sheets, and a lifting unit for moving the support plate upward to facilitate the transfer by the electrode sheet transport unit 510, which will be described later. can do.

Meanwhile, the electrode sheet supply unit 300 includes a first electrode sheet supply unit 310 in which a plurality of first electrode sheets 11 are stacked, and a second electrode sheet supply unit in which a plurality of second electrode sheets 12 are stacked 320. ).

And the first electrode sheet supply unit 310 and the second electrode sheet supply unit 320, considering that the first electrode sheet 11 and the second electrode sheet 12 are sequentially stacked, the electrode sheet transfer unit 510 It can be arranged along the movement direction, that is, along the X-axis direction.

In addition, an unloading unit on which the stack 1 having undergone thermocompression bonding is loaded on the stage 100 may be disposed along the arrangement direction of the first electrode sheet supply unit 310 and the second electrode sheet supply unit 320.

When the unloading unit is disposed along the arrangement direction of the first electrode sheet supply unit 310 and the second electrode sheet supply unit 320, the unloading of the stack 1 may be unloaded using the electrode sheet transport unit 510. You can.

The separator supply unit 400 is installed opposite to the electrode sheet supply unit 300 on the basis of the stage 100, and is configured to supply a separator 20 of a preset size in a single sheet, according to the supply method of the separator 20. Various configurations are possible.

For example, the separator supply unit 400 may be transported by a separator transport unit 520 to be described later in a stacked state cut to a predetermined size.

On the other hand, it is technically very difficult to pick up a separator in a stacked state while the characteristics of the material of the separator, in particular, ultrathin.

Accordingly, the separation membrane advanced unit 400, as an embodiment, is preferably configured to supply the separation membrane 20 to the sheet by cutting to a predetermined size from the separation membrane roll 21.

More specifically, the separator supply unit 400 includes a separator sheet supply unit 410 in which the separator roll 21 in which the separator is wound with a continuous sheet 22 is rotatably installed; A sheet fixing seating portion 430 receiving the continuous sheet 22 from the separator sheet supplying portion 410 and fixing it on the bottom surface; While the continuous sheet 22 is fixed, the continuous sheet 22 fixed to the sheet fixing seat 430 is cut to a predetermined width in the longitudinal direction of the continuous sheet 22 to form a separator 20 having a predetermined size. It may include a sheet cutting portion 420.

Here, the separator roll 21 is a roll in which the separator is wound with a continuous sheet 22 and may be formed of rolls of various structures according to the width and material of the separator.

The separator sheet supply unit 410 is a configuration in which the separator roll 21 in which the separator is wound with the continuous sheet 22 is rotatably installed, and various configurations are possible depending on the bonding structure of the roll.

For example, the separator sheet supply unit 410 may be composed of a cylindrical rod into which the roll 21 in which the separator sheet 22 is wound in a continuous sheet structure on the outer circumferential surface of the hollow cylinder is rotatably inserted into the hollow. .

Here, the separator sheet supply unit 410 may be configured to be rotated by a motor for smooth supply of the separator sheet 22.

On the other hand, the separator sheet supply unit 410, the fixing state of the separator sheet 22 is unstable due to a change in tension in the process of fixing and transporting the separator sheet 22 by the seat fixing seat 430, which will be described later. There is this.

Thus, the separator sheet supply unit 410 is installed on the movement path of the continuous sheet 22 between the separator fixing seat 430 from the separator roll 21 to separate the separator roll to guide the movement of the continuous sheet 22 ( 21) may include one or more guide rods (412, 413) disposed in parallel to the rotation axis direction.

The guide rods 412 and 413 are installed on the moving path of the continuous sheet 22 between the separator fixing seats 430 from the separator roll 21 to separate the separator rolls 21 to guide the movement of the continuous sheets 22. ) Is a configuration that is arranged in parallel to the rotation axis direction, various configurations are possible.

Furthermore, at least one of the guide rods 412 and 413 is installed to be movable in at least one of the up-down direction and the left-right direction, and the separator sheet is appropriately adjusted by adjusting the tension changed during the fixing and conveying process of the separator sheet 22. The fixing of (22) can be maintained stably.

The seat fixing seating portion 430 is configured to receive the continuous sheet 22 from the separator sheet supply unit 410 and fix it on the bottom surface. Various configurations are possible.

The seat fixing seating portion 430 can be fixed by adsorbing on the bottom surface of the continuous sheet 22 using a vacuum pressure by surface contact.

In addition, the sheet fixing seating portion 430, as shown in FIGS. 5A to 5D, is a sheet cutting portion 420 to be described later in a state where it is adsorbed and fixed using vacuum pressure by surface contact to the bottom surface of the continuous sheet 22 ), It is preferable that the continuous sheet 22 is installed to be movable in the X-axis direction so that it can be cut to a predetermined size.

On the other hand, the seat fixing seating portion 430, the separation membrane 20 cut by the sheet cutting portion 420, the vacuum pressure for adsorbing the separation membrane 20 to be easily transferred to the separation membrane transfer unit 520 to be described later is controlled You can.

The sheet cutting portion 420, the continuous sheet 22 fixed to the seat fixing seat 430 in a state in which the continuous sheet 22 is fixed, is cut into a predetermined width in the longitudinal direction of the continuous sheet 22 to be set in advance Various configurations are possible as a configuration for forming the sized separator 20.

For example, the sheet cutting portion 420, as shown in Figures 4 to 5d, and the vacuum adsorption unit 421 to adsorb and fix using the vacuum pressure by surface contact on the upper surface of the continuous sheet 22 and ; It may include a separation membrane cutting portion 422 coupled to the vacuum adsorption unit 421 to cut the continuous sheet 22 adsorbed to the vacuum adsorption unit 421.

The vacuum adsorption unit 421 is configured to be adsorbed and fixed using a vacuum pressure by surface contact to the upper surface of the continuous sheet 22, and various configurations are possible.

Particularly, the vacuum adsorption part 421 is lowered by the tension of the continuous sheet 22 when the continuous sheet 22 fixed in the sheet fixing seat 430 described above is cut by the separation membrane cutting part 422. In order to prevent sagging or moving in the opposite direction, it can be fixed by adsorbing on the upper surface of the continuous sheet 22 using a vacuum pressure by surface contact.

Meanwhile, a process of cutting the separator using the seat fixing seat 430 and the sheet cutting part 420 is as illustrated in FIGS. 5A to 5D.

Specifically, first, the seat fixing seating portion 430, as shown in Figure 5a, secures the bottom surface of the continuous sheet 22 by surface contact, and also vacuum suction portion 421 of the sheet cutting portion 420 By cutting the upper surface of the continuous sheet 22 by surface contact by the separation membrane cutting unit 422 to cut the separation membrane 20.

When the separation of the separator 20 is completed, the cut separator 20 is transferred to the stack 1 of the stage 100 by the separator transfer unit 520 described later.

And the sheet fixing seat 430, as shown in Figure 5b, for the additional supply of the insulating film 20 toward the sheet cutting portion 420, that is, the continuous sheet 22 cut by the sheet cutting portion 420 It is moved by a preset distance to be further cut to a preset length based on the end of the. Here, the sheet cutting portion 420 is in a state of being moved upward for smooth movement of the seat fixing seating portion 430.

After the seat fixing seat 430 is moved by a predetermined distance, the sheet cutting unit 420 descends in a state in which the continuous sheet 22 is adsorbed and fixed, and the seat fixing seat 430 is illustrated in FIG. 5C. As shown, the bottom surface of the continuous sheet 22 is adsorbed and fixed by vacuum pressure.

On the other hand, when the seat fixing seat 430 adsorbs and fixes the bottom surface of the continuous sheet 22 by vacuum pressure, as shown in FIG. 5D, the seat fixing seat 430, the continuous sheet with a predetermined length It moves toward the stage 100 so that it can cut 22. Here, the sheet cutting portion 420 is in a state of being moved upward for smooth movement of the seat fixing seating portion 430.

And when the seat fixing seat 430 is in the cutting position, the sheet cutting unit 420, as shown in Figure 5a, so as to be able to perform the cutting of the continuous sheet 22 by the separation membrane cutting unit 422. It descends downward.

On the other hand, the adsorption and fixation of the separation membrane described above includes an absorption block having a plurality of suction holes on a surface in contact with the separation membrane, and a main flow path connected to a plurality of suction holes connected to a pneumatic transmission line transmitting vacuum pressure from the outside. It can be performed using.

The electrode sheet transport unit 510 is configured to transfer the first electrode sheets 11 and the second electrode sheet 12 from the electrode sheet supply unit 300 to the stage 100, and may vary according to the movement method of the electrode sheet. Configuration is possible.

For example, the electrode sheet transfer unit 510 may transfer the first electrode sheets 11 and the second electrode sheet 12 from the electrode sheet supply unit 300 to the stage 100 by vacuum pressure, The electrode sheet can be picked up by a plurality of pickers with an adsorption head when adsorbing the electrode sheet.

The separation membrane transfer unit 520 is configured to transfer the separation membrane 20 from the separation membrane supply unit 400 to the stage 100, and various configurations are possible.

For example, the separation membrane transfer unit 520 may be fixed by adsorbing on the top surface of the continuous sheet 22 using a vacuum pressure by surface contact.

On the other hand, between the separation membrane supply unit 400 and the stacking position, a first image acquisition unit for acquiring an image of the separation membrane 20 to check the horizontal alignment of the separation membrane 20 picked up by the separation membrane transfer unit 520 ( 610) may be installed, wherein at least one of the stage 100 and the membrane transfer unit 520 to be aligned by horizontal rotation of any one of the separator 20 and the stacked body 1 according to the horizontal alignment state, It can be installed to enable horizontal rotation.

In particular, the separation membrane transfer unit 520 may be rotatably installed while the separation membrane 20 is adsorbed and fixed.

In addition, between the stacking position and the electrode sheet supply unit 300, images of the electrode sheets 11 and 12 are acquired to check the horizontal alignment of the electrode sheets 11 and 12 picked up by the electrode sheet transfer unit 510. The first image acquisition unit 610 to be installed may be installed, wherein the stage 100 and the electrode to be aligned by the horizontal rotation of any one of the electrode sheets 11, 12 and the stacked body 1 according to the horizontal alignment state At least one of the sheet transport units 510 may be installed to enable horizontal rotation.

In particular, the electrode sheet transport unit 510 may be rotatably installed in a state where the electrode sheets 11 and 12 are adsorbed and fixed.

The above is merely a description of some of the preferred embodiments that can be implemented by the present invention, so, as is well known, the scope of the present invention should not be construed as being limited to the above embodiments, and the present invention described above. It will be said that all of the technical ideas and the technical ideas that accompany the fundamentals are included in the scope of the present invention.

1: laminate
11: 1st electrode sheet 12: 2nd electrode sheet
20: separator
100: stage 200: pressing part
300: electrode sheet supply unit 400: separator supply unit

Claims (5)

A secondary battery stacking device in which the first electrode sheet 11 and the second electrode sheet 12 are sequentially stacked while the separator 20 is interposed,
One or more stages 100 for supporting the stacked body 1 in which the first electrode sheet 11 and the second electrode sheet 12 are sequentially stacked while the separator 20 is interposed;
An electrode sheet supply unit 300 disposed on one side of the stage 100 and having a plurality of first electrode sheets 11 and a plurality of second electrode sheets 12 stacked;
A separator supply unit 400 which is installed opposite to the electrode sheet supply unit 300 based on the stage 100 and supplies a separator 20 of a preset size in a single sheet;
An electrode sheet transfer unit 510 for transferring the first electrode sheets 11 and the second electrode sheets 12 from the electrode sheet supply unit 300 to the stage 100;
And a separation membrane transfer unit 520 for transferring the separation membrane 20 from the separation membrane supply unit 400 to the stage 100.
The separator supply unit 400 is cut to a predetermined size from the separator roll 21, the electrode stacking device characterized in that to supply the separator 20 as a single sheet. The method according to claim 1,
The separator supply unit 400,
A separator sheet supply unit 410 in which the separator roll 21 in which the separator is wound with the continuous sheet 22 is rotatably installed;
A sheet fixing seating portion 430 receiving the continuous sheet 22 from the separator sheet supplying portion 410 and fixing it on the bottom surface;
In a state where the continuous sheet 22 is fixed, the continuous sheet 22 fixed to the seat fixing seat 430 is cut to a predetermined width in the longitudinal direction of the continuous sheet 22 to obtain a separator 20 of a preset size. It includes a sheet cutting portion 420 to form,
The separator transfer unit 520, a secondary battery stacking device, characterized in that for transferring the cut separator 20 of the sheet cutting unit 420 to the stage (100). The method according to claim 2,
The separator sheet supply unit 410,
It is installed on the movement path of the continuous sheet 22 between the separator fixing seat 430 from the separator roll 21 to be arranged parallel to the rotation axis direction of the separator roll 21 to guide the movement of the continuous sheet 22 Secondary battery stacking device comprising at least one guide rod (412, 413). The method according to claim 2,
The separator transfer unit 520, a secondary battery stacking device, characterized in that by adsorbing and fixing using a vacuum pressure by surface contact on the upper surface of the continuous sheet (22). The method according to any one of claims 2 to 4,
The sheet cutting part 420 includes a vacuum adsorption part 421 for adsorbing and fixing the top surface of the continuous sheet 22 by using a vacuum pressure by surface contact;
Secondary battery characterized in that it comprises a separation membrane cutting portion 422 coupled to the vacuum adsorption unit 421 to cut the continuous sheet 22 adsorbed to the vacuum adsorption unit 421.

Images