KR102606920B1 - Battery cell stacking system for secondary batteries - Google Patents

Abstract

The disclosed battery cell stacking system for secondary batteries includes a stacking device that manufactures a battery cell stack by alternately stacking negative and positive plates with a separator in between; A negative electrode plate manufacturing/supply device installed on one side of the stacking device, which manufactures a negative electrode plate and supplies the manufactured negative electrode plate to the stacking device; A positive plate manufacturing/supply device installed on the other side of the stacking device, which manufactures the positive plate and supplies the manufactured positive plate to the stacking device; and a separator supply device installed on the upper side of the stacking device, which supplies the separator to be folded in a zigzag shape on the stack table of the stacking device so that the negative electrode plate and the positive plate are stacked in a Z-stacking manner. Includes.

Description

Battery cell stacking system for secondary batteries {BATTERY CELL STACKING SYSTEM FOR SECONDARY BATTERIES}

The present invention (Disclosure) relates to a battery cell stacking system for secondary batteries, and more specifically, to a battery cell stacking system for secondary batteries that can improve the speed and yield of battery cell stack manufacturing by unifying the battery cell stack manufacturing process. It's about.

Here, background information related to the present invention is provided, and this does not necessarily mean prior art (This section provides background information related to the present disclosure which is not necessarily prior art).

Generally, chemical batteries are divided into primary batteries, which are used only for one-time discharge, and secondary batteries, which can be reused through repeated charging and discharging. Secondary batteries are being applied to various technical fields throughout the industry due to the repetitive charging and discharging described above.

As everyone knows, secondary batteries are manufactured by sequentially stacking a positive electrode plate, a separator, and a negative electrode plate and immersing them in an electrolyte solution. Methods for manufacturing the internal cell stack of secondary batteries are broadly classified into two types.

That is, in the case of small secondary batteries, the method of placing the negative and positive plates on a separator and winding them to form a jelly-roll is often used, and for medium to large secondary batteries with more electric capacity. In the case of , a method of manufacturing a negative electrode plate, a positive plate, and a separator by stacking in an appropriate order is widely used.

In addition, there are several methods of manufacturing the internal cell stack of secondary batteries by stacking, but among them, the Z-stacking method involves the separator being folded in a zigzag manner, and between the zigzag folded separators. Negative plates and positive plates are stacked in an alternating manner.

Meanwhile, a representative example of a device for manufacturing a battery cell stack using the Z-stacking method is 'Korean Patent Publication No. 10-2120403 (Cell Stack for Secondary Battery), patented and applied for by the present applicant. manufacturing device) and 'Korean Patent Publication No. 10-2320868 (cell stack manufacturing device for secondary batteries)'.

However, in the cell stack manufacturing device for secondary batteries disclosed in the above-mentioned 'Korean Patent Publication', the separator is folded in a zigzag shape by a stack table that rotates 45 degrees left and right, so the laminated negative electrode plates and There is a problem in which the positive electrode plate slips, and as a result, there is another problem in which the negative electrode plate and the positive plate cannot be stacked above a certain height.

In addition, when manufacturing a cell stack using the cell stack manufacturing device for secondary batteries disclosed in the above-mentioned 'Korean Patent Publication', the negative and positive plates are cut into single sheets and placed in a magazine, so equipment for extracting the electrode plates from the magazine is required. There was a problem with the load, and another problem was that the battery cell stack manufacturing time and cost increased.

In addition, there was a problem in that the negative and positive plates placed in the magazine were in close contact with each other due to static electricity caused by friction and chemicals used in the manufacturing process. Due to this problem, there was another problem in which two or more negative and positive plates were pulled out and supplied. .

Korean Patent Publication No. 10-1933550. Korean Patent Publication No. 10-2483520. Korean Patent Publication No. 10-2483525. Korean Patent Publication No. 10-2022-0145704.

The present invention (Disclosure) is a secondary technology that allows the battery cell stack to be manufactured by unifying the notching of the electrode film and the cutting and stacking process of the electrode film into one, thereby improving the speed and yield of battery cell stack manufacturing. The purpose is to provide a battery cell stacking system for batteries.

In addition, the problem to be solved by the present invention is not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by those skilled in the art from the description below. It could be.

Here, a general summary of the present invention is provided, and this should not be construed as limiting the scope of the present invention (This section provides a general summary of the disclosure and is not a comprehensive disclosure of its full scope or all of its features).

In order to solve the above problem, a battery cell stacking system for secondary batteries according to one aspect of several aspects describing the present invention is a battery cell stack by alternately stacking negative and positive plates with a separator in between. a stacking device that allows this to be manufactured; A negative electrode plate manufacturing/supply device installed on one side of the stacking device, which manufactures a negative electrode plate and supplies the manufactured negative electrode plate to the stacking device; A positive plate manufacturing/supply device installed on the other side of the stacking device, which manufactures the positive plate and supplies the manufactured positive plate to the stacking device; and a separator supply device installed on the upper side of the stacking device, which supplies the separator to be folded in a zigzag shape on the stack table of the stacking device so that the negative electrode plate and the positive plate are stacked in a Z-stacking manner. It can be included.

In a battery cell stacking system for secondary batteries according to an aspect of the present invention, a negative electrode plate manufacturing/supply device includes: a negative electrode film supply unit that supplies a negative electrode film; A negative electrode plate notching mold for punching the negative electrode film into the desired shape; and a negative electrode plate processing unit having a negative electrode plate cutter that cuts the electrode film for the negative electrode to manufacture a negative electrode plate; A negative electrode plate inspection/alignment unit having first and second conveyors for transporting the negative electrode plate, foreign matter inspection cameras for detecting surface defects of the negative electrode plate, a size inspection camera, and an alignment table for aligning the negative electrode plate; and a negative electrode plate supply unit having a negative electrode plate delivery picker that picks up the aligned negative electrode plate and supplies it to the stack table.

In the battery cell stacking system for secondary batteries according to an aspect of the present invention, the first conveyor is installed between the negative electrode plate cutter and the foreign matter inspection cameras to transport the negative electrode plate cut by the negative plate cutter to the foreign matter inspection cameras, and the first conveyor is installed between the negative electrode plate cutter and the foreign matter inspection cameras. 2 The conveyor is installed at a distance from the first conveyor to receive the negative plate, but the second conveyor is installed to extend from the foreign matter inspection cameras, past the size inspection camera, and toward the alignment table to transfer the negative plate to the alignment table, and uses a negative plate cutter. The extended end of the negative electrode film supplied between the bottom coat and the top coat can be cut by the action of the bottom coat and the top coat while hanging over the first conveyor.

In the battery cell stacking system for secondary batteries according to an aspect of the present invention, foreign matter inspection cameras are installed up and down between the first and second conveyors that are installed apart from each other, and photograph the upper and lower surfaces of the negative electrode plate to detect surface defects. , the size inspection camera is installed between the foreign matter inspection cameras and the alignment table to photograph the negative plate and inspect the size, and the alignment table is installed between the extended ends of the second conveyor, which forms a pair of two. , the alignment table has a smaller area than the area of the negative electrode plate, and the second conveyor is based on images taken of the negative electrode plate exposed to the outside of the alignment table by alignment cameras fixedly installed on the lower side of the alignment table. The alignment table aligns the negative electrode plates through linear movement and rotational movement around an imaginary vertical axis in the longitudinal and width directions, and the alignment table rises to the upper side of the second conveyor or removes foreign substances so that the aligned negative electrode plates can be handed over to the negative electrode transfer picker. The negative electrode plate with defects discovered by the inspection cameras and the negative electrode plate with size errors discovered by the size inspection camera are installed to be able to descend to the lower side of the second conveyor so that they are discharged by the operation of the second conveyor, and the size inspection camera and the second conveyor Between the conveyors, a transparent pressure plate that momentarily presses the negative electrode plate to prevent the negative plate from lifting can be installed to be able to move up and down.

In the battery cell stacking system for secondary batteries according to one aspect of the present invention, the negative plate transfer picker has one end, which is the center of rotation, horizontally reciprocates between the upper side of the alignment table and the upper side of the stack table. A negative electrode plate adsorption gripper may be installed at the lower part of the other end of the negative electrode plate transfer picker while rotating, to pick up the aligned negative electrode plate from the alignment table using vacuum suction force, and place the adsorbed negative electrode plate on the stack table.

In a battery cell stacking system for secondary batteries according to an aspect of the present invention, a positive electrode plate manufacturing/supply device includes: a positive electrode film supply unit that supplies a positive electrode film; A positive electrode plate processing unit having a positive electrode plate notching mold for punching the positive electrode film into the desired shape and a positive electrode plate cutter for cutting the positive electrode film to produce a positive electrode plate; A positive plate inspection/alignment unit having first and second conveyors for transporting the positive plate, foreign matter inspection cameras for detecting surface defects of the positive plate, a size inspection camera, and an alignment table for aligning the positive plate; and a positive plate supply unit having a positive plate transfer picker that picks up the aligned positive plate and supplies it to the stack table.

In the battery cell stacking system for secondary batteries according to an aspect of the present invention, the first conveyor is installed between the positive plate cutter and the foreign matter inspection cameras to transport the positive plate cut by the positive plate cutter to the foreign matter inspection cameras, and the first conveyor is installed between the positive plate cutter and the foreign matter inspection cameras. 2 The conveyor is installed to be spaced apart from the first conveyor to receive the positive plate, and the second conveyor is installed to extend from the foreign matter inspection cameras, past the size inspection camera, and toward the alignment table to transfer the positive plate to the alignment table. The extended end of the positive electrode film supplied between the bottom coat and the top coat of the positive electrode plate cutter can be cut by the action of the bottom coat and top coat while hanging over the first conveyor.

In the battery cell stacking system for secondary batteries according to one aspect of the present invention, foreign matter inspection cameras are installed up and down between the first and second conveyors that are installed apart from each other, and photograph the upper and lower surfaces of the positive plate to detect surface defects. , the size inspection camera is installed between the foreign matter inspection cameras and the alignment table to photograph the positive plate and inspect the size, and the alignment table is installed between the extended ends of the second conveyor, which forms a pair of two. , the alignment table has a smaller area than the area of the positive plate, and the second conveyor is based on images taken of the positive plate exposed to the outside of the alignment table by alignment cameras fixedly installed on the lower side of the alignment table. The alignment table aligns the positive plate through linear movement and rotational movement around a virtual vertical axis in the longitudinal and width directions, and the alignment table rises to the upper side of the second conveyor or removes foreign substances so that the aligned positive plate can be handed over to the positive plate transfer picker. The positive plate with defects discovered by the inspection cameras and the positive plate with size errors discovered by the size inspection camera are installed to be able to descend to the lower side of the second conveyor so that they are discharged by the operation of the second conveyor, and the size inspection camera and the second conveyor Between the conveyors, a transparent pressure plate that momentarily presses the positive plate to prevent it from lifting can be installed to be able to move up and down.

In the battery cell stacking system for secondary batteries according to an aspect of the present invention, the positive plate transfer picker has one end, which is the center of rotation, horizontally reciprocates between the upper side of the alignment table and the upper side of the stack table. A positive plate adsorption gripper may be installed at the lower part of the other end of the positive plate transfer picker while rotating to pick up the aligned positive plate from the alignment table using vacuum suction force and place the adsorbed positive plate on the stack table.

In the battery cell stacking system for secondary batteries according to an aspect of the present invention, the stack table can receive and stack negative and positive plates from the negative and positive plate transfer pickers while moving up and down.

In a battery cell stacking system for secondary batteries according to an aspect of the present invention, a separator supply device includes: a separator supply unit that supplies a separator; A separator transport unit that corrects tension and tortuosity while transporting the separator supplied from the separator supply unit; And a swing roll that supplies the separator supplied from the separator transfer unit to the stack table side, and a swing roll transport means that horizontally moves the swing roll in both directions of the stack table so that the separator supplied from the swing roll to the stack table side is folded in a zigzag shape. It may include a separator stack.

In the battery cell stacking system for secondary batteries according to one aspect of the present invention, the separator transfer unit includes a separator feeder roll that transfers the separator from the separator supply unit at a constant pitch and supplies it to the swing roll side; A guide roll that guides the separator toward the separator feeder roll; A transfer roll that guides the separator unwound from the separator supply unit to the guide roll; a dancer roll that adjusts the tension of the separator; A support panel supporting the separator feeder roll, guide roll, transfer rolls and dancer roll on one side; and a meander correction means for detecting meandering of the separator, wherein the support panel is installed to be movable in a direction perpendicular to the transport direction of the separator to correct the meandering of the separator, and the separator feeder roll is referenced on one side of the support panel. A hot wire cutter is installed to be able to lift in the direction in which the manufactured battery cell stack is discharged and cuts the separator in the battery sec stack, and the meander correction means is installed in isolation from the support panel to cut the separator entering the guide roll. Meander detection sensor that detects meandering; And a meander correction motor installed on the upper surface of the fixed panel fixed to the lower part of the other side of the support panel and connected to the other side of the support panel through a motion conversion device that converts rotational force into linear motion. .

In the battery cell stacking system for secondary batteries according to an aspect of the present invention, the swing roll is installed to be placed on the upper side of the stack table, and is provided as two rolls rotating in opposite directions, and two rolls of the swing roll A separator guided from a separator feeder roll enters between the rolls, and the swing roll can supply the entered separator to the stack table.

In the battery cell stacking system for secondary batteries according to an aspect of the present invention, the swing roll moving means includes a slider installed between the swing roll and the support panel to support the swing roll; and a swing roll movement motor that moves the slider horizontally back and forth in both directions of the stack table. One end of the swing roll is installed on the lower side of one side of the slider, and the upper side of the slider is positioned on the stack table so as not to interfere with the fixed panel. It is connected to the lower side of the support panel so that it can move in both directions, and a first guide rail is installed on the lower side and lower surface of one side of the support panel, and a first guide rail is installed on the upper side of the other side of the slider and the upper side of the upper surface. A first guide block that is slidably fitted may be installed.

In the battery cell stacking system for secondary batteries according to an aspect of the present invention, the swing roll movement motor is installed on the fixed panel to face the slider and is connected to the slider via a crank arm, and one end of the crank arm is a swing roll. It is fixedly installed on the output shaft of the moving motor, and the other end of the crank arm is installed on the slider so that the slider moves along a support panel that moves in the meander correction direction as the slider moves along the first guide rail. A second guide rail extending in the compensation direction is installed, and on the other end of the crank arm, a second guide block is slidably inserted into the second guide rail and pivotably connected to the crank arm so that the slider moves along the first guide rail. This can be installed.

In the battery cell stacking system for secondary batteries according to an aspect of the present invention, the stacking device is an auxiliary device that prevents the battery cell stack from being pressed by the separator connected to the swing roll when guiding the manufactured battery cell stack to the discharge position. It further includes a roll; wherein the auxiliary roll is movably mounted on a lifting frame supporting the stack table so as to be disposed between the battery cell stack and the swing roll, which are guided to the discharge position without interfering with the stack table, and the auxiliary roll is capable of lifting the battery cells. It descends during stack manufacturing, and when guiding the manufactured battery cell stack to the discharge position, the separator can be lifted to the height of the top of the battery cell stack.

According to the present invention, the notching, cutting, and stacking processes of the electrode films for the cathode and the anode are unified into one process, providing the effect of improving the speed and yield of battery cell stack manufacturing. It becomes possible.

According to the present invention, it is possible to provide the effect of securing price competitiveness in manufacturing a battery cell stack because equipment for extracting the negative and positive plates from the magazine as in the prior art is not required.

According to the present invention, since the electrode film for the cathode and the anode is cut into the cathode plate and the anode plate and supplied to the stack table at the same time, it is possible to provide the effect of preventing multiple sheets of the cathode plate and positive plate from being supplied as in the past. There will be.

According to the present invention, since the stack table does not rotate left and right as in the prior art, it provides the effect of allowing the negative and positive plates to be stacked above a certain height.

1 is a diagram schematically showing a battery cell stacking system for secondary batteries according to the present invention.
FIG. 2 is a diagram schematically showing the negative electrode plate manufacturing/supply device shown in FIG. 1.
Figure 3 is a diagram schematically showing the positive plate manufacturing/supply device shown in Figure 1.
Figure 4 is a diagram schematically showing the stacking device shown in Figure 1.
FIGS. 5 and 6 are diagrams schematically showing the separator transfer unit and the separator stacking unit shown in FIG. 1.
FIG. 7 is a diagram schematically showing a state in which a battery cell stack is manufactured in the stacking device shown in FIG. 1.
FIG. 8 is a diagram schematically showing the state in which the battery cell stack that has been manufactured in FIG. 7 is discharged.

Hereinafter, an embodiment implementing the battery cell stacking system for secondary batteries according to the present invention will be described in detail with reference to the drawings.

However, the essential technical idea of the present invention cannot be said to be limited to the embodiments described below, and based on the essential technical idea of the present invention, it cannot be said that the possible embodiments are limited by the embodiments described below. It is disclosed that the embodiment described in covers the scope that can be easily proposed by way of replacement or change.

In addition, the terms used below are selected for convenience of explanation, so in understanding the essential technical idea of the present invention, they are not limited to dictionary meanings and are appropriately interpreted as meanings that correspond to the technical idea of the present invention. It should be.

Among the attached drawings, Figures 1 to 8 are diagrams schematically showing a battery cell stacking system for secondary batteries according to the present invention.

Referring to Figures 1 to 8, the battery cell stacking system for secondary batteries according to the present invention includes a stacking device 300, a negative plate manufacturing/supply device 100 installed oppositely to both sides of the stacking device 300, and It includes a positive plate manufacturing/supplying device 200 and a separator supply device 400 installed on the upper side of the stacking device 300.

First, the negative electrode plate manufacturing/supply device 100 processes the negative electrode film (CF) to manufacture the negative electrode plate (CP), and supplies the manufactured negative electrode plate (CP) to the stacking device 300.

The cathode plate manufacturing/supply device 100 includes a cathode electrode film supply unit 110, a cathode plate processing unit 120, a cathode plate inspection/alignment unit 140, and a cathode plate supply unit 160.

The cathode electrode film supply unit 110 includes a cathode electrode film unwinding shaft 112 that supplies a cathode electrode film (CF) for manufacturing a cathode plate (CP).

The cathode electrode film unwinding shaft 112 holds a bobbin on which the cathode electrode film (CF) is wound in the form of a roll, and intermittently rotates the bobbin by the operation of a servomotor (not shown). The negative electrode film (CF) wound around the bobbin is unwound toward the negative electrode plate processing unit 120.

For example, the bobbin on which the cathode electrode film (CF) is wound is inserted into the outer peripheral surface of the cathode electrode film unwinding shaft 112, and the cathode electrode film unwinding shaft 112 presses the hollow part of the inserted bobbin to unwind the bobbin. Hold it.

This cathode electrode film unwinding shaft 112 may be provided as a typical air shaft or a typical air chuck.

Meanwhile, the negative electrode film supply unit 110 allows the negative electrode films (CF) to be continuously unwound by connecting them without stopping the operation of the battery cell stacking system for secondary batteries according to the present invention.

To this end, the cathode electrode film supply unit 110 may include two cathode electrode film unwinding shafts 112 and a typical unwinder auto splice (114).

That is, when the negative electrode film (CF) is unwound from one negative electrode film unwinding shaft 112, the negative electrode film (CF) is not unwound from the other negative electrode film unwinding shaft 112 and is unwound. While waiting, the unwinder automatic splice 114 automatically attaches the electrode film (CF) for the negative electrode that is waiting to be unwinded at the time when the unwinding of the electrode film (CF) for the unwinding negative electrode is completed.

Here, the unwinder automatic splice 114 is a known technology, and detailed description of the unwinder automatic splice 114 is omitted in the present invention.

In other words, the unwinder automatic splice 114 may have any configuration as long as it can automatically splice the cathode electrode film (CF) waiting to be unwinded to the unwinding cathode electrode film (CF).

The cathode plate processing unit 120 includes a cathode plate notching mold 122 for punching out the cathode electrode film (CF) into a desired shape, and a cathode plate cutter 134 for cutting the cathode electrode film (CF) into unit cathode plates (CP). Includes.

The negative plate notching mold 122 includes a die assembly 124 and a punch assembly 128 that moves up and down toward the die assembly 124.

The die assembly 124 includes dies 126 that punch out the top line side and the bottom line side of the cathode electrode film (CF), and a cathode electrode film supply unit 110 on the upper side of the dies 126. The cathode electrode film (CF) unwinded from is continuously and intermittently supplied.

The punch assembly 128 includes a die 126 and punches 130 that punch the top line side and the bottom line side of the cathode electrode film CF.

When punching the cathode electrode film (CF), the punches 130 descend toward the die 126 and rise at the same time as they punch (shear) the cathode electrode film (CF) placed on the die 126. Through the action of the punches 130, the cathode electrode film (CF) is punched into the desired shape.

For example, an electrode tab is formed on the top line side of the negative electrode film (CF) by the action of the die 126 and the punch 130.

And on one side of the negative electrode plate notching mold 122 facing the negative electrode cutter 134, a typical negative electrode film feeder roll 132 provided in pairs is installed.

The cathode electrode film feeder roll 132 rotates intermittently by the operation of a servomotor (not shown) and continuously moves the cathode electrode film (CF) in a traction manner, thereby pulling the cathode electrode film (CF). ) is supplied to the negative electrode notching mold 122, and the negative electrode film (CF) with the top line side and bottom line side perforated is supplied to the negative electrode plate cutter 134.

Here, the die assembly 124 including the dies 126, the punch assembly 128 including the punches 130, and the lifting operation of the punch assembly 128 are known techniques, and detailed description thereof will be omitted. .

The cathode plate cutter 134 includes a base coat 136 and a top coat 138 for cutting the cathode electrode film (CF).

Between the base coat 136 and the top coat 138, a cathode electrode film (CF) with the top line side and bottom line side perforated from the cathode plate notching mold 122 is supplied, and the bottom coat 136 or top coat 138 is raised and lowered. During operation, the cathode electrode film (CF) is cut in the width direction to manufacture a single unit cathode plate (CP).

At this time, when cutting the cathode electrode film (CF), the extended end of the cathode electrode film (CF) supplied between the bottom coat 136 and the top coat 138 is placed on the first conveyor 142 of the cathode plate inspection/alignment unit 140. In the draped state, it is cut by the action of the lower coat 136 and the upper coat 138.

Here, since the lifting operation of the lower channel 136 or the upper channel 138 is a known technique, detailed description thereof will be omitted.

The cathode plate inspection/alignment unit 140 includes foreign matter inspection cameras 146, a size inspection camera 170, and an alignment table 148. In addition, the negative electrode plate inspection/alignment unit 140 further includes first and second conveyors 142 and 144 that transport unit negative electrode plates (CP).

The first conveyor 142 is installed between the negative plate cutter 134 and the foreign matter inspection cameras 146, and cuts from the negative plate cutter 134 by intermittently rotating the belt by the operation of a servomotor (not shown). The unit cathode plate (CP) coming out is transferred to the foreign matter inspection cameras 146.

The second conveyor 144 is installed to extend from the foreign matter inspection cameras 146, past the size inspection camera 170, toward the alignment table 148, and intermittently moves the belt by operating a servomotor (not shown). The negative electrode plate (CP) that has passed through the foreign matter inspection cameras 146 by rotating is transferred to the alignment table 148 through the size inspection camera 170.

At this time, the second conveyor 144 is installed at a predetermined distance from the first conveyor 142 so that it can receive the negative electrode plate (CP) from the first conveyor 142.

Preferably, the first and second conveyors 142 and 144 may be provided as conventional vacuum belt conveyors.

More preferably, the second conveyor 144 may be provided in a pair of two so as to support (adsorb) and transport the top line side and the bottom line side of the negative electrode plate (CP).

Foreign matter inspection cameras 146 are installed vertically between the first and second conveyors 142 and 144 that are spaced apart from each other.

The foreign matter inspection cameras 146 installed in this way detect surface defects by photographing the upper and lower surfaces of the cathode plate (CP) transported from the first conveyor 142 to the second conveyor 144.

In other words, the foreign matter inspection cameras 146 detect defects such as foreign matter, stains, scratches, and splicing on the upper and lower surfaces of the cathode plate (CP), and the foreign matter inspection cameras 146 The negative electrode plate (CP) whose defects were discovered falls through the extended end of the second conveyor 144 to a cassette (not shown) provided on the lower side of the extended end of the second conveyor 144 and is collected in the cassette.

Preferably, the foreign matter inspection cameras 146 may be provided as conventional line scan cameras.

The size inspection camera 170 is installed between the foreign matter inspection cameras 146 and the alignment table 148.

The size inspection camera 170 installed in this way photographs the cathode plate (CP) transported by the second conveyor 144 and inspects the size of the cathode plate (CP).

At this time, between the size inspection camera 170 and the second conveyor 144, a pressure plate 172 that momentarily presses the cathode plate (CP) to prevent the cathode plate (CP) from lifting is installed to be able to lift for accurate size inspection.

The pressure plate 172 is transparent so that the size inspection camera 170 can photograph the cathode plate (CP), and since the lifting and lowering operation of the pressure plate 172 is a known technology, detailed description thereof will be omitted.

For example, the pressure plate 172 may be connected to a cam (not shown) driven (rotated) by a servomotor (not shown) to move up and down.

And the negative electrode plate (CP) whose size defect was discovered by the size inspection camera 170 passes through the extended end of the second conveyor 144 and is placed in a cassette (not shown) provided on the lower side of the extended end of the second conveyor 144. It falls to the side and is collected into a cassette.

Preferably, the size inspection camera 170 may be provided as a typical line scan camera like the foreign matter inspection cameras 146.

The alignment table 148 is installed between the extended ends of the second conveyor 144 to receive the negative electrode plate (CP) from the second conveyor 144 without interfering with the operation of the second conveyor 144. , Alignment cameras 150 are installed on the lower side of the alignment table 148 so that their positions are fixed to the alignment table 148.

The alignment table 148 has an area smaller than the area of the cathode plate (CP) and adsorbs the cathode plate (CP) transported by the second conveyor 144 with vacuum suction force, and the image captured by the alignment camera 150 Align the cathode plate (CP) based on .

To this end, the alignment table 148 performs linear movement and a virtual vertical axis (Z) in the longitudinal direction (X-axis direction) and width direction (Y-axis direction) of the second conveyor 144 to align the negative electrode plate (CP). It is installed so that it can rotate at a predetermined angle (θ) around the axis.

That is, when the alignment table 148 adsorbs the negative electrode plate (CP), the alignment cameras 150 photograph the edges of the negative electrode plate (CP) exposed to the outside of the alignment table 148 to determine the alignment status of the negative electrode plate (CP). is inspected, and if an error occurs in the alignment state, the alignment table 148 aligns the negative electrode plate (CP) while performing the linear and rotational movements described above.

Here, the above-described linear and rotational movements of the alignment table 148 are implemented by connecting to a typical X-Y-θ driver (not shown), and the connection between the alignment table 148 and the Since this is a technology, detailed description thereof will be omitted.

Preferably, the alignment camera 150 may be provided as a typical area scan camera.

Meanwhile, the alignment table 148 transfers the aligned negative electrode plate (CP) to the negative electrode plate supply unit 160 or inspects the negative electrode plate (CP) with defects found by the foreign matter inspection camera 146 and the size inspection camera 170. It is installed so that it can be lifted up and down together with the

That is, the alignment table 148 rises to the upper side of the second conveyor 144 so that the negative electrode plate supply unit 160 can receive the aligned negative electrode plate (CP), and the negative electrode plate (CP) in which defects are found and size errors are removed. The negative electrode plate (CP) in which an error was found is lowered to the lower side of the second conveyor 144 so that it is discharged by the operation of the second conveyor 144, and the negative electrode plate (CP) in which an error was found is discharged across the second conveyor 144. do.

Here, since it is a known technique to lift and lower the alignment table 148 together with the X-Y-θ driver and the alignment cameras 150, a detailed description thereof will be omitted.

The negative plate supply unit 160 is installed between the alignment table 148 of the negative plate inspection/alignment unit 140 and the stacking device 300 to pick up the aligned negative electrode plate (CP) and supply it to the stacking device 300. It includes a negative plate transfer picker 162.

The negative plate transfer picker 162 is connected to the upper side of the alignment table 148 and the stack table 310 of the stacking device 300 by the operation of a servomotor (not shown) on the other end with respect to one side, which is the center of rotation. ) moves horizontally in a reciprocating motion on the upper side, and the negative electrode plate (CP) that has been aligned from the alignment table 148 is adsorbed and picked up by vacuum suction at the lower part of the other end of the negative plate transfer picker 162, and a stacking device ( A negative electrode plate adsorption gripper 164 is installed to place the adsorbed negative electrode plate (CP) on the stack table 310 of 300).

That is, when the other end of the negative plate transfer picker 162 turns to the upper side of the align table 148, the align table 148 rises to the upper side of the second conveyor 144. At this time, the align table 148 The vacuum suction power is lost, and the negative electrode plate adsorption gripper 164 adsorbs and picks up the negative electrode plate (CP) aligned on the alignment table 148. And when the negative electrode plate adsorption gripper 164 picks up the negative electrode plate (CP) from the alignment table 148, the alignment table 148 can take over another negative electrode plate (CP) transferred to the second conveyor 144. descends toward the second conveyor 144 so that the other end of the negative plate transfer picker 162 rotates toward the upper side of the stack table 310 of the stacking device 300 to remove the separator (S) supplied to the stack table 310. ) and then turn to the upper side of the alignment table 148 again.

The positive electrode plate manufacturing/supply device 200 processes the positive electrode film (AF) to manufacture the positive electrode plate (AP), and supplies the manufactured positive electrode plate (AP) to the stacking device 300.

The positive plate manufacturing/supplying device 200 includes a positive electrode film supply section 210, a positive electrode processing section 220, a positive plate inspection/alignment section 240, and a positive plate supply section 260.

The positive electrode film supply unit 210 includes a positive electrode film unwinding shaft 212 that supplies the positive electrode film (AF) for manufacturing the positive electrode plate (AP).

The anode electrode film unwinding shaft 212 holds a bobbin on which the anode electrode film (AF) is wound in a roll form, and intermittently rotates the bobbin by the operation of a servomotor (not shown). The positive electrode film (AF) wound on the bobbin is unwound toward the positive electrode plate processing unit 220.

For example, the bobbin on which the positive electrode film (AF) is wound is inserted into the outer peripheral surface of the positive electrode film unwinding shaft 212, and the positive electrode film unwinding shaft 212 presses the hollow part of the inserted bobbin to unwind the bobbin. Hold it.

This positive electrode film unwinding shaft 212 may be provided as a typical air shaft or a typical air chuck.

Meanwhile, the positive electrode film supply unit 210 allows the positive electrode films (AF) to be continuously unwound by connecting them without stopping the operation of the battery cell stacking system for secondary batteries according to the present invention.

To this end, the positive electrode film supply unit 210 may include two positive electrode film unwinding shafts 212 and a typical unwinder auto splice (214).

That is, when the positive electrode film (AF) is unwound from one positive electrode film unwinding shaft 212, the positive electrode film (AF) is not unwound from the other positive electrode film unwinding shaft 212 and is unwound. While waiting, the unwinder automatic splice 214 automatically attaches the positive electrode film (AF) waiting to be unwound when the unwinding of the unwinding positive electrode film (AF) is completed.

Here, the unwinder automatic splice 214 is a known technology, and detailed description of the unwinder automatic splice 214 is omitted in the present invention.

In other words, the unwinder automatic splice 214 may have any configuration as long as it can automatically connect the positive electrode film (AF) waiting to be unwound to the unwinding positive electrode film (AF).

The positive plate processing unit 220 includes a positive plate notching mold 222 that punches the positive electrode film (AF) into a desired shape and a positive plate cutter 234 that cuts the positive electrode film (AF) into unit positive electrode plates (AP). Includes.

The positive plate notching mold 222 includes a die assembly 224 and a punch assembly 228 that moves up and down toward the die assembly 224.

The die assembly 224 includes dies 226 that punch out the top line side and the bottom line side of the anode electrode film (AF), and an anode electrode film supply unit 210 on the upper side of the dies 226. The anode electrode film (AF) unwound from is continuously and intermittently supplied.

The punch assembly 228 includes a die 226 and punches 230 that punch the top line side and the bottom line side of the anode electrode film (AF).

When punching the anode electrode film (AF), the punches 230 descend toward the die 226 and rise at the same time as they punch (shear) the anode electrode film (AF) placed on the die 226. Through the action of the punches 230, the anode electrode film (AF) is punched into the desired shape.

For example, an electrode tab is formed on the top line side of the positive electrode film (AF) by the action of the die 226 and the punch 230.

And on one side of the positive plate notching mold 222 facing the positive plate cutter 234, a typical positive electrode film feeder roll 232, which is provided as a pair, is installed.

The anode electrode film feeder roll 232 rotates intermittently by the operation of a servomotor (not shown) and continuously moves the anode electrode film (AF) in a traction manner, thereby pulling the anode electrode film (AF). ) is supplied to the positive plate notching mold 222, and the positive electrode film (AF) with the top line side and bottom line side perforated is supplied to the positive plate cutter 234.

Here, the die assembly 224 including the dies 226, the punch assembly 228 including the punches 230, and the lifting operation of the punch assembly 228 are known techniques, and detailed description thereof will be omitted. .

The anode plate cutter 234 includes a base coat 236 and a top coat 238 for cutting the positive electrode film (AF).

Between the base coat 236 and the top coat 238, an anode electrode film (AF) with the top line side and bottom line side perforated from the anode plate notching mold 222 is supplied, and the bottom coat 236 or top coat 238 is raised and lowered. During operation, the anode electrode film (AF) is cut in the width direction to manufacture one anode plate (AP).

At this time, when cutting the anode electrode film (AF), the extended end of the anode electrode film (AF) supplied between the bottom coat 236 and the top coat 238 is placed on the first conveyor 242 of the anode plate inspection/alignment unit 240. In the draped state, it is cut by the action of the lower coat 236 and the upper coat 238.

Here, since the lifting operation of the lower channel 236 or the upper channel 238 is a known technique, detailed description thereof will be omitted.

The positive plate inspection/alignment unit 240 includes foreign matter inspection cameras 246, a size inspection camera 270, and an alignment table 248. In addition, the positive plate inspection/alignment unit 240 further includes first and second conveyors 242 and 244 that transport unit positive plate APs.

The first conveyor 242 is installed between the positive plate cutter 234 and the foreign matter inspection cameras 246, and cuts from the positive plate cutter 234 by intermittently rotating the belt by the operation of a servomotor (not shown). The positive electrode plate (CP) that comes out is transferred to the foreign matter inspection cameras 246.

The second conveyor 244 is installed to extend from the foreign matter inspection cameras 246 past the size inspection camera 270 toward the alignment table 248, and intermittently moves the belt by the operation of a servomotor (not shown). The positive electrode plate (AP) that has passed through the foreign matter inspection cameras 246 by rotating is transferred to the alignment table 248 through the size inspection camera 270.

At this time, the second conveyor 244 is installed at a predetermined distance from the first conveyor 242 to receive the unit positive plate (AP) from the first conveyor 242.

Preferably, the first and second conveyors 242 and 244 may be provided as conventional vacuum belt conveyors.

More preferably, the second conveyor 244 may be provided as a set of two so as to support (adsorb) and transport the top line side and the bottom line side of the positive electrode plate (AP).

Foreign matter inspection cameras 246 are installed vertically between the first and second conveyors 242 and 244 that are spaced apart from each other.

The foreign matter inspection cameras 246 installed in this way detect surface defects by photographing the upper and lower surfaces of the positive electrode plate (AP) transported from the first conveyor 242 to the second conveyor 244.

In other words, the foreign matter inspection cameras 246 detect defects such as foreign matter, stains, scratches, and splicing on the upper and lower surfaces of the positive plate (AP), and the foreign matter inspection cameras 246 The positive electrode plate (AP) whose defect is found falls through the extended end of the second conveyor 244 to a cassette (not shown) provided on the lower side of the extended end of the second conveyor 244 and is collected in the cassette.

Preferably, the foreign matter inspection cameras 246 may be provided as conventional line scan cameras.

The size inspection camera 270 is installed between the foreign matter inspection cameras 246 and the alignment table 248.

The size inspection camera 270 installed in this way photographs the positive electrode plate (AP) transported by the second conveyor 244 and inspects the size of the positive electrode plate (AP).

At this time, between the size inspection camera 270 and the second conveyor 244, a pressure plate 272 that momentarily presses the cathode plate (AP) to prevent the cathode plate (AP) from lifting is installed to be able to lift for accurate size inspection.

The pressure plate 272 is transparent so that the size inspection camera 270 can photograph the cathode plate (AP), and since the lifting and lowering operation of the pressure plate 272 is a known technology, detailed description thereof will be omitted.

For example, the pressure plate 272 may be connected to a cam (not shown) driven (rotated) by a servomotor (not shown) to move up and down.

And the negative electrode plate (AP) whose size defect is found by the size inspection camera 270 passes through the extended end of the second conveyor 244 and is placed in a cassette (not shown) provided on the lower side of the extended end of the second conveyor 244. It falls to the side and is collected into a cassette.

Preferably, the size inspection camera 270 may be provided as a typical line scan camera like the foreign matter inspection cameras 146.

The alignment table 248 is installed between the extended ends of the second conveyor 244 to receive the positive electrode plate (AP) from the second conveyor 244 without interfering with the operation of the second conveyor 244. , Alignment cameras 250 are installed on the lower side of the alignment table 248 so that their positions are fixed to the alignment table 248.

The alignment table 248 has an area smaller than that of the negative electrode plate (AP) and adsorbs the negative electrode plate (AP) transported by the second conveyor 244 with vacuum suction force, and the image captured by the alignment camera 250 Align the cathode plate (AP) based on .

To this end, the alignment table 248 performs linear movement and a virtual vertical axis (Z) in the longitudinal direction (X-axis direction) and width direction (Y-axis direction) of the second conveyor 244 to align the positive electrode plate (AP). It is installed so that it can rotate at a predetermined angle (θ) around the axis.

That is, when the alignment table 248 adsorbs the positive electrode plate (AP), the alignment cameras 250 photograph the positive electrode plate (AP) exposed to the outside of the alignment table 248 to inspect the alignment state of the positive electrode plate (AP). And, if an error occurs in the alignment state, the alignment table 248 aligns the positive plate CP while performing the linear and rotational movements described above.

Here, the above-described linear and rotational movements of the alignment table 248 are implemented by connecting to a typical X-Y-θ driver (not shown), and the connection between the alignment table 248 and the Since this is a technology, detailed description thereof will be omitted.

Preferably, the alignment camera 250 may be provided as a typical area scan camera.

Meanwhile, the alignment table 248 passes the aligned positive electrode plate (AP) to the positive plate supply unit 260 or sends the unit positive plate (AP) whose defects were found by the foreign matter inspection camera 246 to the size inspection camera 270. It is installed so that it can be lifted up and down together with the

That is, the alignment table 248 rises to the upper side of the second conveyor 244 so that the bipolar plate supply unit 260 can receive the aligned anode plate (AP), and the anode plate (AP) in which defects are found and size errors are removed. The positive electrode plate (AP) in which an error was found is lowered to the lower side of the second conveyor 244 so that it is discharged by the operation of the second conveyor 244, and the positive electrode plate (AP) in which the error was found is discharged across the second conveyor 244. do.

Here, since it is a known technique to lift and lower the alignment table 248 together with the X-Y-θ driver and the alignment cameras 250, a detailed description thereof will be omitted.

The positive plate supply unit 260 is installed between the alignment table 248 of the positive plate inspection/alignment unit 240 and the stacking device 300 to pick up the aligned positive plate (AP) and supply it to the stacking device 300. It includes a positive plate transfer picker 262.

The positive plate transfer picker 262 is connected to the upper side of the alignment table 248 and the stack table 310 of the stacking device 300 by the operation of a servomotor (not shown) on the other end with respect to one side, which is the center of rotation. ) moves horizontally in a reciprocating motion on the upper side of the positive plate transfer picker 262, and the unit positive plate (AP) that has been aligned is adsorbed and picked up from the alignment table 248 using vacuum suction power at the lower part of the other end of the positive plate transfer picker 262, and a stacking device is installed. A positive plate adsorption gripper 264 is installed to place the adsorbed unit positive plate CP on the stack table 310 of 300.

That is, when the other end of the positive plate transfer picker 262 turns to the upper side of the align table 248, the align table 248 rises to the upper side of the second conveyor 244. At this time, the align table 248 The vacuum suction power is lost, and the positive plate adsorption gripper 264 adsorbs and picks up the unit positive plate (AP) aligned on the alignment table 248. And when the positive plate adsorption gripper 264 picks up the positive plate (AP) from the alignment table 248, the alignment table 248 can take over another positive plate (AP) transferred to the second conveyor 244. descends toward the second conveyor 244 so that the other end of the positive plate transfer picker 262 rotates toward the upper side of the stack table 310 of the stacking device 300 to remove the separator (S) supplied to the stack table 310. ) and then turn to the upper side of the alignment table 248 again.

The stacking device 300 stacks the negative electrode plate (CP), the positive plate (AP), and the separator (S) in a predetermined order to manufacture the battery cell stack (E).

The stacking device 300 is a 'cell stack manufacturing device for secondary batteries' disclosed in "Korean Patent Publication No. 10-2120403" and "Korean Patent Publication No. 10-2320868" described in 'Background Technology of the Invention'. It includes a stack table 310, a pole plate stacking position adjusting means 320, a supporting means 330, and a clamping means 340 having the same or similar configuration and function.

Here, the stack table 310 allows the cathode plate (CP) and the positive plate (AP) to be alternately stacked with the separator (S) in between, and the electrode plate stacking position control means 320 is used to adjust the cathode plate (CP) and the positive plate (AP). The stack table 310 is supported so that the negative electrode plate (CP) and the positive plate (AP) are stacked at the same position regardless of the number of stacking times.

And the clamping means 340 alternates the other edge connected to both ends of the cathode plate (CP) with the separator S and one edge connected to both ends of the positive electrode plate (AP) with the separator S to the stack table 310 side. The battery cell stack (E) is manufactured by pressing and holding the negative electrode plate (CP), positive plate (AP), and separator (S) stacked on the stack table 310 without collapsing.

However, the support means 330 of the stacking device 300 of the battery cell stacking system for secondary batteries according to the present invention is the support means of the 'cell stack manufacturing apparatus for secondary batteries' disclosed in the above-mentioned "Korean Patent Publications". Differently, the lifting frame 350 on which the stack table 310, the pole plate stacking position adjusting means 320, and the clamping means 340 are mounted is supported to be able to be lifted.

The support means 330 operates the lifting frame 350 to lift and lower the mounting frame 332 that supports the lifting frame 332, the support frame 334 that supports the mounting frame 332 so that it can be lifted and the mounting frame 332. Includes a servomotor 336 for lifting the mounting frame.

Meanwhile, the stacking device 300 of the battery cell stacking system for secondary batteries according to the present invention, unlike the 'cell stack manufacturing devices for secondary batteries' disclosed in the above-mentioned "Korean Patent Publications", includes a stack table 310 and electrode plate stacking. The position control means 320 is raised and lowered to receive the negative electrode plate (CP) and positive plate (AP) supplied from the negative plate manufacturing/supply device 100 and the positive plate manufacturing/supply device 200.

For this purpose, the stacking device 300 includes a lifting cam 360 rotatably installed on the lower side of the lifting frame 350.

The lifting cam 360 rotates by the operation of a servomotor (not shown) and raises and lowers the stack table 310 and the electrode plate stacking position control means 320 so that the stack table 310 is connected to the negative plate manufacturing/supply device 100. and to receive the negative electrode plate (CP) and positive plate (AP) supplied from the positive plate manufacturing/supply device 200.

That is, the negative plate adsorption gripper 164 of the negative plate transfer picker 162 and the positive plate adsorption gripper 264 of the positive plate transfer picker 262 adsorb the negative electrode plate (CP) and the positive plate (AP) and alternately hold the stack table 310. When turning toward the upper side, the lifting cam 360 rotates by the operation of a servomotor (not shown) and raises the stack table 310 and the electrode plate stacking position control means 320. At this time, the negative plate of the negative plate transfer picker 162 The positive plate adsorption gripper 264 of the adsorption gripper 164 and the positive plate transfer picker 262 alternately places the negative electrode plate (CP) and the positive plate (AP) on the separator (S) that is folded in a zigzag shape as the vacuum suction force is lost.

And the negative plate adsorption gripper 164 of the negative plate transfer picker 162 and the positive plate adsorption gripper 264 of the positive plate transfer picker 262 alternately place the negative electrode plate (CP) and the positive plate (AP) on the separator (S) that is folded in a zigzag shape. When put down, the lifting cam 360 rotates by the operation of a servomotor (not shown) and lowers the stack table 310 and the plate stacking position adjusting means 320.

The separator supply device 400 places the separator S on the stack table 310 of the stacking device 300 in a zigzag form so that the cathode plate (CP) and the anode plate (AP) are stacked in a Z-stacking manner. Supplied to be folded.

The separator supply device 400 includes a separator supply unit 410, a separator transfer unit 420, and a separator stacking unit 440.

The separator supply unit 410 includes a separator unwinding shaft 412 that supplies the separator (S).

The separator unwinding shaft 412 holds a bobbin on which the separator S is wound in a roll form, and rotates the bobbin intermittently by the operation of a servomotor (not shown) to form a separator wound on the bobbin. (S) is unwound toward the separator transfer unit 420.

For example, the bobbin on which the separator S is wound is inserted into the outer peripheral surface of the separator unwinding shaft 412, and the separator unwinding shaft 412 presses the hollow part of the inserted bobbin to grip the bobbin.

This separator unwinding shaft 412 may be provided as a typical air shaft or a typical air chuck.

Meanwhile, the separator supply unit 410 automatically replaces the new separator (S) when the unwinding of the separator (S) is completed without stopping the operation of the battery cell stacking system for secondary batteries according to the present invention, and the new separator ( S) can be automatically attached to the separator (S) being unwound and continuously unwound.

To this end, the separator supply unit 410 may be the 'automatic exchange device for film-type material for secondary batteries' disclosed in "Patent Application No. 10-2023-0044484" filed with the present applicant.

The separator transfer unit 420 transfers the separator S unwound from the separator supply unit 410 to the separator stacking unit 440, and corrects the meandering of the separator S transferred to the separator stacking unit 440.

The separator transport unit 420 has the same or similar structure and function as the 'device' disclosed in "Korean Patent Publication No. 10-2192738", which has been patented and applied for by the present applicant.

In other words, the separator transport unit 420 includes a support panel 422, a separator feeder roll 424, a guide roll 426, a plurality of transport rolls 428, a dancer roll 430, and a meander correction means 432. do.

To explain this in more detail, the support panel 422 is provided in a substantially vertical plate shape and is installed to be spaced apart from the upper side of the stack table 310 of the stacking device 300.

A separator feeder roll 424, a guide roll 426, a plurality of transfer rolls 428, and a dancer roll 430 are supported on one side of this support panel 422.

In addition, the support panel 422 is installed to be movable in a direction perpendicular to the transport direction of the separator (S) in order to correct the meandering of the separator (S).

Here, since it is a known technique to movably install the support panel 422, a detailed description thereof will be omitted.

The separator feeder roll 424 is provided as a pair of two rolls rotating in opposite directions, and the separator feeder roll 424 is a separator (S) that enters between the two rolls by the operation of a servomotor (not shown). ) is supplied to the separator stack 440 at a constant pitch.

That is, the separator feeder roll 424 transports the separator S from the separator supply unit 410 by pulling the separator S.

This separator feeder roll 424 is installed on the support panel 422 facing the upper surface of the stack table 310.

The guide roll 426 is installed on the upper side of the separator feeder roll 424 adjacent to the separator feeder roll 424.

The guide roll 426, like the separator feeder roll 424, is provided in a pair of two rolls rotating in opposite directions, and guides the separator (S) entering between the two rolls toward the separator feeder roll 424. .

The transfer rolls 428 guide the separator (S) unwound from the separator supply unit 410 toward the guide roll 426, and the dancer roll 430 is between the transfer rolls 428 adjacent to the guide roll 426. The tension of the separator S that is installed and supplied to the stack table 310 is adjusted.

At this time, the transfer rolls 420 may be idle rolls that freely rotate in an unloaded state, and the dancer rolls 422 may adjust the tension of the separator (S) while turning left and right like a pendulum.

On the other hand, the meander correction means 432 moves the support panel in a direction to correct the meander when the meander of the separator (S) is detected by the meander detection sensor 434 and the meander detection sensor 434 that detects the meander of the separator (S). It includes a meander correction motor 436 that moves (422) in a direction perpendicular to the transport direction of the separator (S).

Here, the meandering detection sensor 434 is installed in isolation from the support panel 422 to detect the meandering of the separator (S) entering the guide roll 426 and changes in the absolute position of the lateral end line of the separator (S). and detect absolute angle changes.

And the skew correction motor 436 is installed on the upper surface of the fixing panel 438, which is fixedly installed on the lower part of the other side of the support panel 422. The skew correction motor 436 applies the rotational force of the skew correction motor 436 to a straight line. It is connected to the other side of the support panel 422 through a typical motion conversion device (not shown) that converts it into motion.

Meanwhile, the separator transfer unit 420 further includes a hot wire cutter 460 that cuts the separator (S) from the battery cell stack (E) when the manufactured battery cell stack (E) is discharged.

The hot wire cutter 460 is installed to be able to be raised and lowered on the lower side of one side of the support panel 422 so as not to interfere with the separator feeder roll 424, and the hot wire cutter 460 is installed in the battery cell with the separator feeder roll 424 as the reference. It is installed in the direction in which the stack (E) is discharged.

The hot wire cutter 460 installed in this way generates heat when electricity is applied and delivers the separator (S). When the battery cell stack (E) is discharged by the battery cell stack discharge device (W), it descends and delivers the separator (S). rises at the same time.

Here, since the lifting and lowering operation of the hot wire cutter 460 is a known technique, detailed description thereof will be omitted.

The separator stacking unit 440 supplies the separator S supplied from the separator transfer unit 420 to the stack table 310 so that it is folded in a zigzag shape.

The separator stack 440 includes a swing roll 442 and a swing roll moving means 444.

The swing roll 442 is provided as two rolls rotating in opposite directions, and is installed to be disposed on the upper side of the stack table 310.

The separator (S) guided from the separator feeder roll 424 of the separator transport unit 420 enters between the two rolls of the swing roll 442, and the swing roll 442 enters between the two rolls. ) is supplied to the stack table 310.

Preferably, the swing roll 442 is provided as an idle roll that freely rotates in an unloaded state.

The swing roll moving means 444 moves the swing roll 442 a certain distance in both directions of the stack table 310 so that the separator S supplied from the swing roll 442 to the stack table 310 is folded in a zigzag shape. Move horizontally and reciprocate.

The swing roll moving means 444 includes a slider 446 supporting the swing roll 442 and a swing roll moving motor 452 that horizontally moves the slider 446 back and forth a certain distance in both directions of the stack table 310. Includes.

The slider 446 is installed between the swing roll 442 and the support panel 422 of the separator transport unit 420.

One end of the swing roll 442 is installed on the lower side of one side of the slider 446 so as not to interfere with the rotation of the swing roll 442, and the upper side of the slider 446 is installed on a stack table so as not to interfere with the fixing panel 438. It is connected to the lower side to the support panel 438 so that it can be moved in both directions (310).

For this purpose, a first guide rail 448 is installed on the lower side and lower surface of one side of the support panel 438, and a first guide rail 448 is installed on the upper side and upper surface of the other side of the slider 446. A first guide block 450 that is slidably fitted is installed.

The swing roll movement motor 452 is installed on the fixed panel 438 to face the slider 446, and the output shaft of the swing roll movement motor 452 is connected to the slider 446 via the crank arm 454.

That is, one end of the crank arm 454 is fixedly installed on the output shaft of the swing roll movement motor 452, and the other end of the crank arm 454 is a slider (446) so that the slider 446 moves along the first guide rail 448. 446) and is rotatably connected to it.

Meanwhile, the other end of the crank arm 454 is connected so that the slider 446 can move along the support panel 422 that moves in the meander correction direction.

For this purpose, a second guide rail 456 extending in the meander correction direction is installed on the lower side of the upper surface of the slider 446, and a guide rail 456 is slidably fitted to the second guide rail 456 on the other end of the crank arm 454. A second guide block 458 is installed, and the second guide block 458 is rotatably connected to the crank arm 454 so that the slider 446 moves along the first guide rail 448.

Below, the operating state using the battery cell stacking system for secondary batteries according to the present invention formed as described above will be briefly described.

First, in order to manufacture the battery cell stack (E), the front end of the separator (S) transferred from the separator feeder roll 424 passes through the swing roll 442 and is adsorbed and fixed to the stack table 310.

When the distal end of the separator (S) is fixed to the stack table 310, the swing roll moving means 444 operates the swing roll moving motor 452 to move the swing roll 442 toward the positive plate manufacturing/supplying device 200. Move it (see (a) of FIG. 7).

As described above, when the swing roll 442 is transferred to the positive plate manufacturing/supplying device 200, the negative plate transfer picker 162 of the negative plate manufacturing/supplying device 100 transfers the adsorbed negative electrode plate (CP) to the stack table 310. It is rotated and transferred to the upper side (see (b) of FIG. 7), and at the same time, the stack table 310 rises and falls by the operation of the lifting cam 360, and the negative plate transfer picker 162 is connected to the stack table 310. When rising, the adsorbed negative electrode plate (CP) is seated on the separator (S) adsorbed and fixed to the stack table 310, and when the stack table 310 descends, it returns to adsorb another negative electrode plate (CP) (in Figure 7 See c).

At the same time, among the clamping means 340 of the stacking device 300, the clamping means 340 adjacent to the positive plate manufacturing/supply device 200 holds one edge of the negative electrode plate (CP) seated on the separator (S) on the stack table. It is fixed by pressing toward the (310) side (see (d) in Figure 7).

And at the same time, the electrode plate stacking position control means 320 of the stacking device 300 lowers the stack table 310 by the thickness of the negative electrode plate (CP) seated on the separator (S).

Meanwhile, as described above, when one negative electrode plate (CP) is seated and stacked on the separator (S), the swing roll moving means 444 operates the swing roll moving motor 452 to move the swing roll 442 to the negative electrode plate manufacturing/ It is moved to the supply device 100 side, and at this time, the negative electrode plate (CP) is pressurized and fixed by the clamping means 340 adjacent to the positive plate manufacturing/supplying device 200, so the negative electrode plate is manufactured/supplied along the swing roll 442. The separator S moving toward the device 100 covers the top of the negative electrode plate CP stacked on the stack table 310 (see (e) of FIG. 7).

And when the negative electrode plate (CP) laminated on the stack table 310 is covered by the separator (S), the positive plate transfer picker 262 pivots and transfers the adsorbed positive electrode plate (AP) to the upper side of the stack table 310 (Figure (see (f) in 7), at the same time, the stack table 310 rises and falls by the operation of the lifting cam 360, and the positive plate transfer picker 262 absorbs the positive plate (AP) when the stack table 310 rises. ) is placed on the stack table 310, and when the stack table 310 descends, it returns to adsorb another positive electrode plate (AP) (see (g) in FIG. 7).

At the same time, among the clamping means 340 of the stacking device 300, the clamping means 340 adjacent to the negative plate manufacturing/supply device 100 is used to clamp the other edge of the positive plate (AP) seated on the separator (S) to the stack table. The clamping means 340, which was fixed by pressing toward the (310) side and pressing and fixing one edge of the negative electrode plate (CP), releases the pressing and fixing of one edge of the negative electrode plate (CP) and returns ((g) in Figure 7). reference).

And at the same time, the electrode plate stacking position control means 320 of the stacking device 300 lowers the stack table 310 by the thickness of the positive electrode plate (AP) mounted on the separator (S).

As described above, when the positive electrode plate (AP) is laminated on the separator (S), the swing roll moving means 444 operates the swing roll moving motor 452 to move the swing roll 442 back to the positive plate manufacturing/supplying device 200. At this time, since the positive plate (AP) is pressurized and fixed by the clamping means 340 adjacent to the negative plate manufacturing/supplying device 100, it moves toward the positive plate manufacturing/supplying device 200 along the swing roll 442. The separator (S) covers the top of the positive electrode plate (AP) laminated on the stack table 310 (see (i) in FIG. 7), and the negative electrode plate (CP) is again placed on the separator (S) covering the positive electrode plate (AP). It is seated and pressurized in the same way.

That is, as the above-described method is repeatedly and continuously performed, the positive electrode plate (AP) and the negative electrode plate (CP) are stacked with the separator (S) interposed therebetween.

Meanwhile, when the anode plate (AP) and the cathode plate (CP) are laminated with the target number of laminations with the separator (S) in between and manufactured into a battery cell stack (E), the manufactured battery cell stack (E) is moved to the discharge location. To be guided, the stacking device 300 operates the servomotor 336 for elevating the mounting frame to raise the mounting frame 332, and as it rises on the mounting frame 332, the stacking device 300 is mounted on the elevating frame 350. The stack table 310, the electrode plate stacking position adjusting means 320, and the clamping means 340 also rise together.

At this time, the battery cell stack (E) guided to the discharge position rises to a higher position than the swing roll 442, and in the stacking device 300, the battery cell stack (E) guided to the discharge position is raised to a higher position than the swing roll 442. An auxiliary roll 370 is installed to prevent it from being pressed by the separator (S) connected to it (see (a) of FIG. 8).

The auxiliary roll 370 can be raised and lowered on the lifting frame 350 so as to be placed between the swing roll 442 and the battery cell stack (E), which is guided to the discharge position without interfering with the stack table 310 and clamping means 340. It is mounted properly.

That is, the auxiliary roll 370 descends so as not to interfere with the stack table 310 and the clamping means 340 when stacking the positive plate (AP) and negative plate (CP) on the separator (S), and the manufactured battery cell stack ( When guiding E) to the discharge position, it rises and lifts the separator (S) between the battery cell stack (E) and the swing roll 442 to the upper height of the battery cell stack (E) and separates the battery cell stack by the separator (S). Make sure (E) is not pressurized.

Here, the auxiliary roll 370 may be an idle roll that rotates freely in an unloaded state, and since the lifting operation of the auxiliary roll 370 is a known technique, detailed description thereof will be omitted.

And when the battery cell stack (E) is guided to the discharge position, it faces the battery cell stack discharge device (W). At this time, the battery cell stack discharge device (W) holds the battery cell stack (E) that has been manufactured, The separator (S) of the battery cell stack (E) discharged by the battery cell stack discharge device (W) is cut by the hot wire cutter 460, and the separator (S) of the battery cell stack (E) is cut by the hot wire cutter 460. ), the servomotor 336 for elevating the mounting frame returns the mounting frame 332. As it returns to the mounting frame 332, the stack table 310 mounted on the elevating frame 350 and the pole plate stacking position. The adjusting means 320 and the clamping means 340 also return together to prepare for the next work (see (b) of FIG. 8).

In the battery cell stacking system for secondary batteries according to the present invention formed in this way, the notching, cutting, and stacking processes of the electrode films (CF, AF) for the negative electrode and the positive electrode are unified into one process, so the battery cell stack (E) Enables improvement in manufacturing speed and yield.

According to the present invention, it is possible to secure price competitiveness in manufacturing the battery cell stack (E) because equipment for extracting the negative and positive plates (CP, AP) from the magazine as in the prior art is not necessary.

According to the present invention, the cathode and anode electrode films (CF, AF) are cut into cathode plates (CP) and anode plates (AP) and supplied to the stack table 310 at the same time, so that multiple sheets of cathode plates (CP) and It is possible to prevent the anode plate (AP) from being supplied.

According to the present invention, since the stack table 310 does not rotate left and right as in the prior art, the negative electrode plate (CP) and the positive plate (AP) can be stacked above a certain height.

Claims (16)

A stacking device that manufactures a battery cell stack by alternately stacking negative and positive plates with a separator in between;
a negative electrode plate manufacturing/supply device installed on one side of the stacking device, which manufactures the negative electrode plate and supplies the manufactured negative electrode plate to the stacking device;
a positive plate manufacturing/supply device installed on the other side of the stacking device, which manufactures the positive plate and supplies the manufactured positive plate to the stacking device; and
Supply of a separator installed on the upper side of the stacking device, supplying the separator to be folded in a zigzag shape on the stack table of the stacking device so that the negative plate and the positive plate are stacked in a Z-stacking manner. Device; includes,
The negative plate manufacturing/supply device,
A cathode electrode film supply unit that supplies a cathode electrode film;
A negative electrode plate processing unit having a negative electrode plate notching mold for punching the negative electrode film into a desired shape and a negative electrode plate cutter for cutting the negative electrode film to manufacture the negative electrode plate;
A negative electrode plate inspection/alignment unit having first and second conveyors for transporting the negative electrode plate, foreign matter inspection cameras for detecting surface defects of the negative electrode plate, a size inspection camera, and an alignment table for aligning the negative electrode plate; and
It includes a negative electrode plate supply unit having a negative electrode plate transfer picker that picks up the aligned negative electrode plate and supplies it to the stack table,
The foreign matter inspection cameras are installed up and down between the first and second conveyors, which are installed apart from each other, and detect surface defects by photographing the upper and lower surfaces of the negative electrode plate,
The size inspection camera is installed between the foreign matter inspection cameras and the alignment table to photograph the negative electrode plate and inspect the size,
The alignment table is installed between the extended ends of the second conveyor, which forms a group of two,
The alignment table has an area smaller than that of the negative electrode plate, and is based on images taken of the negative electrode plate exposed to the outside of the alignment table by alignment cameras fixedly installed on the lower side of the alignment table. Aligning the negative plate by linearly moving the second conveyor in the longitudinal and width directions and rotating it around a virtual vertical axis,
The alignment table rises to the upper side of the second conveyor so that the aligned negative electrode plate can be handed over to the negative electrode plate transfer picker, or the negative electrode plate with defects found by the foreign matter inspection cameras and the size inspection camera determine the size of the negative electrode plate. The negative electrode plate in which an error is found is installed to be lowerable to the lower side of the second conveyor so that it is discharged by operation of the second conveyor,
A battery cell stacking system for a secondary battery in which a transparent pressure plate is installed between the size inspection camera and the second conveyor to be able to lift the negative electrode plate to momentarily press the negative electrode plate to prevent the negative electrode plate from lifting.
delete In claim 1,
The first conveyor is installed between the negative electrode plate cutter and the foreign matter inspection cameras to transport the negative electrode plate cut by the negative plate cutter to the foreign matter inspection cameras, and the second conveyor is configured to receive the negative electrode plate. It is installed to be spaced apart from the first conveyor, and the second conveyor is installed to extend from the foreign matter inspection cameras past the size inspection camera toward the alignment table to transport the negative electrode plate toward the alignment table,
A battery cell stacking system for secondary batteries in which the extended end of the negative electrode film supplied between the bottom coat and the top coat of the negative electrode plate cutter is cut by the action of the bottom coat and the top coat while hanging over the first conveyor.
delete In claim 1,
The negative plate transfer picker rotates horizontally between the upper side of the alignment table and the upper side of the stack table at the other end with respect to one end, which is the center of rotation,
A battery cell stack for a secondary battery in which a negative electrode plate adsorption gripper is installed at the lower part of the other end of the negative plate transfer picker to pick up the aligned negative electrode plate from the alignment table using vacuum suction force and place the negative electrode plate adsorbed on the stack table. King system.
In claim 1,
The positive plate manufacturing/supply device,
An anode electrode film supply unit that supplies an anode electrode film;
A positive electrode plate processing unit having a positive electrode plate notching mold for punching the positive electrode film into a desired shape and a positive electrode plate cutter for cutting the positive electrode film to manufacture the positive electrode plate;
A positive plate inspection/alignment unit having first and second conveyors for transporting the positive plate, foreign matter inspection cameras for detecting surface defects of the positive plate, a size inspection camera, and an alignment table for aligning the positive plate; and
A battery cell stacking system for secondary batteries comprising a positive plate supply unit having a positive plate transfer picker that picks up the aligned positive positive plates and supplies them to the stack table.
In claim 6,
The first conveyor is installed between the positive plate cutter and the foreign matter inspection cameras to transport the positive plate cut by the positive plate cutter to the foreign matter inspection cameras, and the second conveyor is configured to receive the positive plate. It is installed to be spaced apart from the first conveyor, and the second conveyor is installed to extend from the foreign matter inspection cameras past the size inspection camera toward the alignment table to transport the positive plate to the alignment table,
A battery cell stacking system for a secondary battery in which the extended end of the positive electrode film supplied between the bottom coat and the top coat of the positive plate cutter is cut by the action of the bottom coat and the top coat while hanging over the first conveyor.
In claim 6,
The foreign matter inspection cameras are installed up and down between the first and second conveyors, which are installed apart from each other, and detect surface defects by photographing the upper and lower surfaces of the positive plate,
The size inspection camera is installed between the foreign matter inspection cameras and the alignment table to photograph the positive plate and inspect the size,
The alignment table is installed between the extended ends of the second conveyor, which forms a group of two,
The alignment table has an area smaller than that of the positive plate, and is based on images taken of the positive plate exposed to the outside of the alignment table by alignment cameras fixedly installed on the lower side of the alignment table. Aligning the positive plate by linearly moving the second conveyor in the longitudinal and width directions and rotating it around an imaginary vertical axis,
The alignment table rises to the upper side of the second conveyor so that the aligned positive plate can be handed over to the positive plate transfer picker, or the positive plate with defects found by the foreign matter inspection cameras is inspected and the size is inspected by the size inspection camera. The positive plate on which an error is found is installed to be lowerable to the lower side of the second conveyor so that it is discharged by operation of the second conveyor,
A battery cell stacking system for a secondary battery in which a transparent pressure plate is installed between the size inspection camera and the second conveyor to be able to lift the positive plate, which momentarily presses the positive plate to prevent the positive plate from lifting.
In claim 6,
The other end of the positive plate transfer picker rotates horizontally between the upper side of the alignment table and the upper side of the stack table with respect to one end, which is the center of rotation,
A battery cell stack for a secondary battery in which a positive plate adsorption gripper is installed at the bottom of the other end of the positive plate transfer picker to pick up the aligned positive plate from the alignment table using vacuum suction force and place the adsorbed positive plate on the stack table. King system.
In claim 6,
A battery cell stacking system for a secondary battery, wherein the stack table receives and stacks the negative electrode plate and the positive plate from the negative plate transfer picker and the positive plate transfer picker while moving up and down.
In claim 1,
The separation membrane supply device,
A separator supply unit that supplies the separator;
A separator transport unit that corrects tension and tortuosity while transporting the separator supplied from the separator supply unit; and
The swing roll that supplies the separator supplied from the separator transfer unit to the stack table side and the swing roll horizontally reciprocated in both directions of the stack table so that the separator supplied from the swing roll to the stack table side is folded in a zigzag shape. A battery cell stacking system for a secondary battery comprising a separator stacking unit having a swing roll transport means.
In claim 11,
The separator transport unit,
a separator feeder roll that transfers the separator from the separator supply unit at a constant pitch and supplies it to the swing roll;
a guide roll that guides the separator toward the separator feeder roll;
A transfer roll that guides the separator unwound from the separator supply unit toward the guide roll;
A dancer roll that adjusts the tension of the separator;
A support panel supporting the separator feeder roll, the guide roll, the transfer rolls, and the dancer roll on one side; and
Including a meander correction means for detecting meandering of the separator,
The support panel is installed to be movable in a direction perpendicular to the transport direction of the separator to correct the meandering of the separator, and the battery cell stack that has been manufactured is discharged on one side of the support panel based on the separator feeder roll. A hot wire cutter is installed in the outgoing direction to be able to lift and cut the separator from the battery cell stack,
The meander correction means is,
A meandering detection sensor installed to be isolated from the support panel and detecting meandering of the separator entering the guide roll; and
A secondary comprising a skew correction motor installed on the upper surface of the fixed panel fixed to the lower part of the other side of the support panel and connected to the other side of the support panel through a motion conversion device that converts rotational force into linear motion. Battery cell stacking system for batteries.
In claim 12,
The swing roll is installed to be placed on the upper side of the stack table and is provided as two rolls rotating in opposite directions,
A battery cell stacking system for secondary batteries in which the separator guided from the separator feeder roll enters between the two rolls of the swing roll, and the swing roll supplies the entered separator to the stack table.
In claim 13,
The swing roll moving means is,
A slider installed between the swing roll and the support panel to support the swing roll; and
It includes a swing roll movement motor that horizontally reciprocates the slider in both directions of the stack table,
One end of the swing roll is installed on the lower side of one side of the slider, and the upper side of the slider is connected to the lower side of the support panel so that it can move in both directions of the stack table without interfering with the fixing panel,
A first guide rail is installed on the lower side and lower surface of one side of the support panel, and a first guide block that is slidably fitted to the first guide rail is installed on the upper side and upper surface of the other side of the slider. Battery cell stacking system for secondary batteries.
In claim 14,
The swing roll movement motor is installed on the fixing panel to face the slider and is connected to the slider via a crank arm,
One end of the crank arm is fixed to the output shaft of the swing roll movement motor, and the other end of the crank arm is positioned so that the slider moves along the support panel moving in the meander correction direction while the slider moves along the first guide rail. Installed on the slider to move,
A second guide rail extending in a skew correction direction is installed on the lower side of the upper surface of the slider, and is slidably fitted to the second guide rail on the other end of the crank arm so that the slider moves along the first guide rail. A battery cell stacking system for a secondary battery in which a second guide block rotatably connected to the crank arm is installed.
In claim 11,
The stacking device,
It further includes an auxiliary roll that prevents the battery cell stack from being pressed by the separator connected to the swing roll when guiding the manufactured battery cell stack to a discharge position,
The auxiliary roll is movably mounted on a lifting frame supporting the stack table so as to be disposed between the swing roll and the battery cell stack, which is guided to the discharge position without interfering with the stack table.
The auxiliary roll descends when manufacturing the battery cell stack, and lifts the separator to the upper level of the battery cell stack when guiding the manufactured battery cell stack to the discharge position. A battery cell stacking system for a secondary battery.