KR20100113811A - Tabber-stringer and tabbing-stringing method - Google Patents

Abstract

PURPOSE: A Taber - stringer and tabbing - stringing method comprise a plurality of rollers in the ribbon leveler of the Taber - stringer. The up down left right bending of the ribbon is revised altogether. CONSTITUTION: A ribbon leveler(100) revises the up down left right bending of the ribbon provided from the ribbon reel. The ribbon cutter(200) cuts the even ribbon with the ribbon leveler. The first gripper(400) catches one end of the ribbon snapped with the ribbon cutter. The second gripper(300) transfers the snapped ribbon as described above to the main conveyor.

Description

Taber-Stringer and tabbing-stringing method}

The present invention relates to a taber-stringer, and more particularly, in a process of manufacturing a solar cell module, tabbing for cutting a conductor ribbon, applying flux to a solar cell or a ribbon, and placing the cut ribbon on a solar cell and soldering it. A taber-stringer and a tabbing-stringing method for carrying out a stringing process.

At present, human beings obtain most of their energy mainly from oil, coal, nuclear power, and natural gas, and these fossil and nuclear energy sources are expected to be exhausted in the near future. Therefore, countries around the world are spurring on new and renewable energy research and development. Among them, photovoltaic power generation is able to obtain electricity where sunlight shines, and unlike other power generation methods, there is no pollution at all, which is attracting more attention.

For solar power generation, a semiconductor device that converts solar energy into electrical energy is required. This is called a solar cell. In general, only a unit solar cell generates a maximum voltage of about 0.5V, so solar cells must be connected in series. The modularization by connecting unit solar cells is called a solar cell module.

The manufacturing process of the solar cell module is a cell test (S1), tabbing-stringing (S2), lay-up (S3), lamination (S4) as shown in FIG. ), And module test (S5) can be divided into five processes.

First, in the cell test (S1) process, cells having various electrical properties are distinguished from each other after the test, and cells having similar electrical properties are classified. In the second tabbing-stringing (S2) process, the front of the solar cell is connected to connect the solar cells in series. Bond the conductor ribbon so that they are staggered on the back and back. In the third layup (S3) process, the array of solar cells produced in the stringing step is again arranged horizontally to form a desired shape, and then laminated with low iron tempered glass, EVA, and back sheet. In the fourth lamination (S4) process, the laminated solar cell module materials are vacuum-compressed at high temperature, so that the solar cell module can withstand shock and have waterproofness. Finally, in the module test (S5) process, the finished solar cell module is tested for normal operation.

Tabbing refers to bonding the solar cell to the ribbon, and stringing refers to arranging the solar cells in a row.

The tabbing-stringing process is the most essential of the processes, and since the entire solar cell module cannot be used unless the ribbon is broken or bonded properly, the tabbing-stringing process determines the quality of the solar cell module.

Looking specifically at the tabbing-stringing process of the above process, if two ribbons of ribbon are supplied from the ribbon reel, the process of correcting the bending of the ribbon, cutting the ribbon to an appropriate size, and gripper cutting the cut ribbon ( It is a device that performs the tabbing-stringing process, which can be divided into a process of placing it on a solar cell with a gripper, a process of applying flux to the solar cell and a ribbon, and soldering the solar cell and a ribbon. Is called the taber-stringer.

In the process of calibrating the bending, both up, down, left, and right bending of the ribbon may occur. In the related art, there is a drawback in that the right and left bending are partially corrected through only the guides arranged in a row, but the top and bottom bending are not properly corrected. In this case, the ribbon could not be correctly placed on the solar cell, causing a poor bonding.

In addition, conventionally, a cut ribbon is placed on a solar cell using only one gripper. In this case, there is a disadvantage in that parallelism between the left and right intervals of the ribbon is difficult to maintain and a defect occurs in bending of the ribbon during movement. Caused it.

In order to bond the ribbon and the solar cell, it is necessary to apply flux, which serves as an adhesive, which is divided into a method of applying flux using a spray nozzle and a method of applying flux using a roller. The former method has the advantage that the flux is applied only to the part that is exactly bonded to the ribbon, but the disadvantage is that the nozzle unit price is very expensive (US $ 10,000 per unit). The latter method has the advantage of low production cost but has the disadvantage that the flux is not evenly applied to the ribbon.

Soldering process is the method of soldering using the radiant heat energy of the high-intensity lamp and the method of soldering by spraying the heating air. In the soldering method using heated air, heating air is injected while the fixing pin is pressed on the ribbon placed on the solar cell, and the fixing pin is separated from the ribbon. When the fixing pin is separated from the ribbon, the ribbon is connected to the fixing pin. There was a drawback in that the ribbon was lifted off from the solar cell.

The taber-stringer may further include a solar cell supply device for supplying the solar cell to the main conveyor. When the solar cell loaded in the magazine is exhausted by the mobile robot, the solar cell is manually replaced with a new magazine loaded with the solar cell. The solar cell judged to be defective should be placed on a shelf at a certain position, and if the defective solar cell is over a certain amount, the worker should collect it and store it in another location. Therefore, there was a disadvantage that the worker must always manage it by the side.

The present invention was devised to solve the above problems, and an object of the present invention is to provide a plurality of rollers on the ribbon leveler of the taber-stringer to correct both the up, down, left and right bending of the ribbon.

In addition, the ribbon cutting machine of the tabber-stringer is provided with a drop preventing block and a second gripper to move the cut ribbons while both ends of the cut ribbons are fixed, thereby ensuring parallelism and straightness of the cut ribbons. To prevent bending.

In addition, the taber-stringer has a flux coating including two movable flux injection nozzles, which aims to reduce production cost and simplify the structure of the equipment by reducing the number of flux injection nozzles compared to the prior art.

In addition, the cooling air discharge part is provided in the soldering part of the taber-stringer, and the cooling air is injected after the heating air is injected to the junction of the solar cell and the ribbon, thereby increasing the adhesive force between the ribbon and the solar cell , and the fixing pin is separated from the ribbon. When the ribbon is attached to the fixing pin to prevent the lifting of the ribbon is separated from the solar cell.

In addition, in the case of the roller coating of the flux coating part of the taber-stringer, an air knife is provided to uniformly distribute the flux on the ribbon surface , remove excess flux, and simultaneously dry the flux on the ribbon surface .

In addition, a taber-stringer is further provided with a solar cell supply device to automatically supply a solar cell to the main conveyor and to automatically process a defective solar cell.

According to an embodiment of the present invention to achieve the above object, a ribbon leveler for flattening the ribbon by correcting the up, down, left and right bending of the ribbon supplied from the ribbon reel; A ribbon cutter for cutting the ribbon flattened by the ribbon leveler; A first gripper for holding one end of the ribbon cut by the ribbon cutter; A second gripper for moving the cut ribbon to a main conveyor; A flux coating part for applying flux to the solar cell or the ribbon; and a soldering part for bonding the solar cell to the ribbon; wherein the flux coating part is a linear robot coupled to a rail; It provides a tabber-stringer consisting of; two flux injection nozzles coupled to the linear robot.

In addition, according to another embodiment of the present invention, the flux coating for applying the flux to the ribbon supplied from the ribbon reel; A ribbon leveler for flattening the ribbon by correcting up, down, left, and right bending of the ribbon supplied from the flux coating unit; A ribbon cutter for cutting the ribbon flattened by the ribbon leveler; A first gripper for holding one end of the ribbon cut by the ribbon cutter; A second gripper for moving the cut ribbon to a main conveyor; and a soldering part for bonding the solar cell and the ribbon; wherein the flux coating part includes a flux tank containing flux; A roller for applying the flux to the ribbon supplied from the ribbon reel; After passing through the roller to the ribbon is flux-coated, the air knife for injecting air to distribute the flux evenly on the ribbon; provides a taber-stringer comprising a.

The ribbon leveler may include: an introduction guide for correcting bending by receiving a supplied ribbon; a plurality of rollers disposed above and below the ribbon passing through the introduction guide to correct bending of the ribbon; a ribbon passing through the roller to the ribbon cutter It may include a discharge guide to guide, the rollers are arranged in two rows up and down, the rollers in the upper and lower may be arranged in a staggered staggered. In addition, the ribbon leveler may further include a screw that can adjust the width between the left and right ribbon.

In addition, the ribbon cutter may include a ribbon drop prevention block at the bottom of the ribbon cutting block so that the ribbon does not fall to the bottom after cutting the ribbon.

The second gripper may include a linear robot coupled to a rail; a vacuum suction unit for adsorbing the cut ribbon using a vacuum.

In addition, the soldering portion main body; A heated air nozzle which bonds the solar cell to the ribbon by spraying hot air; Cooling air outlet for cooling the junction of the solar cell and the ribbon; and a fixing portion for pressing and fixing the junction of the solar cell and the ribbon.

The apparatus may further include a solar cell supply device for automatically supplying a solar cell to the main conveyor.

The solar cell supply apparatus includes an optical inspection unit for inspecting a solar cell; A loading conveyor for moving a magazine loaded with solar cells before optical inspection; An unloading conveyor for moving a magazine loaded with a solar cell determined to be defective after the optical inspection; A mobile robot for optically inspecting the solar cell loaded in the magazine of the loading conveyor and then moving to the magazine of the main conveyor or the unloading conveyor; An elevator for moving the solar cell stack loaded in the magazine of the loading conveyor and the unloading conveyor up and down; It may include; a propeller for moving the magazine of the loading conveyor to the unloading conveyor.

The solar cell supply apparatus may further include an air blower for injecting air when the mobile robot adsorbs the solar cell loaded in the magazine of the loading conveyor.

Taber-stringer and tabbing-stringing method according to an embodiment of the present invention, by providing a plurality of rollers on the ribbon leveler of the taber-stringer to correct both the up, down, left and right bending of the ribbon, so that the ribbon is bonded exactly on the solar cell As a result, the yield and efficiency of the solar cell module are increased .

In addition, the ribbon cutting machine of the tabber-stringer is provided with a drop preventing block and a second gripper to move the cut ribbon in a state where both ends of the cut ribbon are fixed, thereby ensuring the parallelism and straightness of the cut ribbon. There is an effect of preventing the bending of the ribbon.

In addition, the taber-stringer has a flux coating that includes two movable flux injection nozzles, which reduces the number of flux injection nozzles compared to the prior art, resulting in significant production cost savings, and the production efficiency is increased due to the structural simplification of the equipment. Can achieve the savings.

In addition, the cooling air discharge part is provided in the soldering part of the taber-stringer, and the cooling air is injected after the heating air is injected to the junction of the solar cell and the ribbon, and the adhesion between the ribbon and the solar cell is increased due to the instantaneous cooling. When the ribbon is separated from the ribbon, the ribbon adheres to the fixing pin, thereby preventing the ribbon from being lifted from the solar cell.

In addition, in the case of the roller coating of the flux coating part of the taber-stringer, an air knife is provided to directly spray moisture-removed cooling air to the ribbon surface, thereby uniformly distributing the flux on the ribbon surface and removing excess flux. Drying the flux has the effect of minimizing the impact on other configurations of the post process due to undried excess flux on the ribbon surface.

In addition, since the magazine which has been loaded and unloaded conveyor and propeller is automatically moved to the unloading conveyor in the solar cell automatic supply device of the taber-stringer, it is possible to supply solar cells smoothly, improve work convenience and reduce labor costs. There is.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the present specification and claims should not be construed as being limited to the common or dictionary meanings, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that it can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

First, the flux coating for applying flux to a solar cell or ribbon can be divided into two ways. First, it can be divided into a flux coating part of the spray nozzle method for applying the flux using the spray nozzle, and a roller type flux coating part for applying the flux to the ribbon using the second roller.

Since the arrangement of the flux coating unit and the arrangement of each configuration of the taber-stringer is changed according to the above two methods, it will be described separately.

2A and 2B schematically illustrate a taber-stringer according to an embodiment of the present invention, and in particular, highlighting the arrangement order of each component.

First, Figure 2a is a schematic diagram showing the tabber-stringer in the case where the flux coating portion is an injection nozzle method according to an embodiment of the present invention.

Next, each configuration of the taber-stringer in which the flux injection nozzle is configured as the flux coating unit will be described according to the progress of the ribbon.

In the drawings, reference numerals of the ribbons shown with the respective configurations are referred to as x90.

3 is a perspective view of a ribbon leveler 100 according to one embodiment of the present invention.

First of all, when two ribbons 190 are supplied from the ribbon reel 1, the ribbon leveler 100 corrects the bending of the ribbon 190.

The ribbon leveler 100 may be formed of an introduction guide 110, a plurality of rollers 130, and an discharge guide 120.

The retraction guide 110 and the discharge guide 120 may be composed of two rectangular blocks which are located up and down, and the bending of the ribbon 190 is corrected as the ribbon 190 passes between the blocks.

The roller 130 is located between the inlet guide 110 and the discharge guide 120. The roller 130 is preferably arranged in two rows up and down, and the roller 130 in the top and bottom is preferably staggered staggered.

Since the material of the ribbon 190 is tin, silver, or lead, bending occurs up, down, left, and right in the advancing direction of the ribbon 190.

Conventionally, the ribbon leveler is composed of only a guide, so it is easy to correct the left and right bending, but the upper and lower bending is not easy to correct, so that the ribbon is placed on the solar cell in a state of being chopped, thereby lowering the yield of the solar cell module. There was a problem that the efficiency of the solar cell module is lowered.

By providing the roller 130 according to an embodiment of the present invention, the bending of the ribbon is corrected both up, down, left and right, so that the ribbon can be accurately bonded on the solar cell has the effect of increasing the yield and efficiency of the solar cell module. .

Since the distance between the two strands of ribbon 190 varies depending on the size of the solar cell, the ribbon leveler 100 further includes a screw 140 for adjusting the width between the left and right ribbons so as to adjust the distance. It is preferable.

4 is a perspective view illustrating a ribbon cutter 200, a first gripper 400, and a second gripper 300 according to an embodiment of the present invention.

The ribbon cutter 200 may include a ribbon cutting block 210 and a ribbon drop preventing block 220 positioned below the ribbon cutting block 210.

The first gripper 400 is composed of a straight robot 410 and a ribbon collector 420 coupled to the rail.

The second gripper 300 may include a linear robot 310 and a vacuum suction unit 320 coupled to the rail.

When the ribbon supplied from the ribbon leveler 100 passes between the ribbon cutting block 210 and the drop preventing block 220 of the ribbon cutter 200, the ribbon collector 420 of the first gripper 400 is passed. ) Grasps the end of the ribbon passing through the ribbon cutter 200 and pulls it out by a suitable length to be bonded to the solar cell. In this state, the ribbon cutting block 210 is lowered to cut the ribbon 490. In this case, the fall prevention block 220 may be provided so that one end of the cut ribbon 490 may be fixed without falling to the bottom. One end of the cut ribbon 490 is held by the ribbon collector 420 of the first gripper 400, and the other end is held by the ribbon cutter 200 so that the cut ribbon 490 is fixed. The vacuum suction part 320 of the second gripper 300 descends to absorb the cut ribbon 490. When the vacuum suction unit 320 of the second gripper 300 adsorbs the cut ribbon 490, the ribbon collector 420 and the ribbon cutter 200 of the first gripper 400 are held by the gripper. The ribbon 490 was released. Thereafter, the vacuum suction unit 320 of the second gripper 300 is raised, and the second gripper 300 moves the absorbed ribbon 490 onto the solar cell of the main conveyor 2.

The prior art is provided with only one gripper and the other end is not fixed by dragging one end of the cut ribbon and placing it on the solar cell. There was a drawback to bending the ribbon while dragging the ribbon.

One embodiment of the present invention is provided with the drop preventing block 220 and the second gripper 300 by moving the cut ribbon in a state in which both ends of the cut ribbon is fixed, parallelism and straightness of the cut ribbon It is possible to secure the problem and to solve the disadvantage that the bending occurs during the movement. In addition, since the ribbon is always supplied in the same position to reduce the time for equipment calibration, the efficiency of the work is increased.

5 is a view showing a flux coating 500 according to an embodiment of the present invention.

When the cut ribbon is placed on the solar cell on the main conveyor 2 by the second gripper 300, the flux coating part 500 of the spray nozzle method according to an embodiment of the present invention is applied to the solar cell and the ribbon. Apply flux.

The flux coating unit 500 is composed of a linear robot 510 and two flux injection nozzles 520 coupled to the rail. The flux injection nozzle 520 may be moved back and forth along the rail by the linear robot 510.

FIG. 6 is a view showing the flux coating portions 11 and 21 of the solar cell 10 and the ribbon 20 and the order in which the solar cell and the ribbon are placed. The ribbon 20 is the top surface of the solar cell 10. Or it can be seen that the jig behavior is bonded to the upper and lower surfaces of the solar cell 10, rather than the form only bonded to the lower surface.

The flux coating unit 500 describes a process of applying flux to the solar cell 10 and the ribbon 20. First, when the solar cell 10 is placed on the main conveyor 2, the flux injection nozzle 520 may be used. This moves and the flux is applied to a portion of the upper surface of the solar cell to place the ribbon 20 ((a) step). Later, the ribbon cut by the second gripper 300 is placed on the solar cell 10 ((b) step). After the flux injection nozzle 520 is moved, the flux is applied to the portion where the solar cell 30 is to be placed among the upper surfaces of the cut ribbon. (C) Step Then, the solar cell 30 again performs the flux. Is placed on the applied ribbon 20 (step (d)).

Conventionally, the flux coating part having the flux injection nozzles is composed of four flux injection nozzles which cannot be moved back and forth, and the flux flux nozzles are positioned at the top and bottom of the main conveyor to apply flux to the top and bottom of the solar cell. The method was used.

The price of the flux jetting nozzle is about US $ 15,000. The flux coating unit 500 according to an embodiment of the present invention enables the flux jetting nozzle 520 to move back and forth along the rail, thereby providing two fluxes. Flux can be applied to only the injection nozzle 520. Thus, a significant reduction in production cost can be achieved. Furthermore, the structural simplification of the equipment can increase production efficiency and reduce maintenance costs.

7A is a perspective view illustrating a soldering part 600 according to an embodiment of the present invention, FIG. 7B is a front view, and FIG. 7C is a bottom view.

The soldering part 600 includes a main body 610, a heating air nozzle 640, a cooling air discharge part 620, and a fixing part 630.

The fixing part 630 may be formed of a plurality of fixing pins. The fixing part 630 may be formed by repeating a form in which fixing pins having a large diameter are arranged on the left and right, and small diameter pins are arranged in a line between the large diameter pins.

The heated air nozzle 640 may be diagonally provided on the side surface of the main body 610.

The cooling air discharge part 620 is located at the lower end of the main body 610.

When the solar cell and the ribbon to be soldered are moved to the soldering position through the main conveyor 2 while the ribbon is placed on the solar cell, the soldering part 600 is lowered and the fixing part 630 of the soldering part 600 is moved. Pressurize and fix the junction of the solar cell and the ribbon. At this time, the fixing part 630 is provided with a spring to prevent excessive damage to the solar cell is applied to the solar cell.

In a state where the fixing part 630 fixes the junction between the solar cell and the ribbon, hot air is injected into the junction through the heated air nozzle 640 to bond the solar cell and the ribbon together.

The cooling air discharge part 620 cools the joint faster by spraying cooling air onto the joint after hot air is injected through the heated air nozzle 640.

After cooling air is injected through the cooling air discharge part 620, the soldering part 600 is raised and the solar cell and the ribbon to be soldered again through the main conveyor 2 are moved to the soldering position.

In the conventional method of soldering using heated air, heating air is injected into the junction between the solar cell and the ribbon while the fixing pin presses and fixes the junction between the solar cell and the ribbon, and the fixing pin is raised. In this case, the fixing pin is raised in a state in which the junction between the solar cell and the ribbon is not cooled, and the ribbon is accompanied by the ribbon when the fixing pin is raised.

In accordance with an embodiment of the present invention by providing the cooling air discharge portion 620 in the soldering unit 600, by injecting the heating air to the junction of the solar cell and the ribbon and then spraying the cooling air by the instant cooling The adhesive force of the solar cell is increased to prevent the lifting of the ribbon when the fixing part 630 is raised.

Figure 2b is a schematic diagram showing the tabber-stringer when the flux coating 700 is roller 720 in another embodiment of the present invention, Figure 8a is a roller flux in accordance with an embodiment of the present invention 8B is a side view of the coating unit 700.

Another embodiment of the present invention, the taber-stringer including the roller-type flux coating part 700 has a different arrangement order compared to the taber-stringer including the spray nozzle-type flux coating part 500. .

That is, the spray nozzle type flux coating part 500 is positioned on the main conveyor 2, but the roller type flux coating part 700 exists between the ribbon reel 1 and the ribbon leveler 100. Therefore, the biggest difference is that the taber-stringer including the spray nozzle type flux coating 500 is soldered after the ribbon is cut and the flux is applied to the solar cell and the ribbon, and the roller coating flux coating 700 Taber-stringer comprising) is that the flux is applied to the upper and lower surfaces of the ribbon and then cut and soldered. The other process is the same.

The roller flux coating part 700 includes a flux tank 710, a roller 720, and an air knife 730.

The plus tank 710 receives the flux and supplies the flux that is applied to the ribbon.

The roller 720 applies flux to the ribbon while passing two strands of ribbon 790 supplied from the ribbon reel between the rollers 720.

The air knife 730 passes through the rollers 720 to inject air onto the ribbon to which the flux is applied so that the flux on the surface of the ribbon 790 is uniformly distributed.

In the case of using the roller type flux coating 700 , the flux is excessively supplied to the ribbon and the undried excess flux on the ribbon surface causes the flux to remain in a different configuration in a later process, which causes various problems.

The main component of the flux consists of resin and IPA (isopropyl alcohol).

The flux coating part 700 according to an embodiment of the present invention is provided with an air knife 730 to directly spray moisture-removed cooling air onto the ribbon surface, thereby uniformly distributing the flux on the ribbon surface and removing excess flux. do. Furthermore, by evaporating only the IPA of the main constituents of the flux on the ribbon surface instantaneously and drying only the resin in solid form, there is an effect of minimizing the effect on other configurations of the post process due to the undried flux on the ribbon surface.

The number of air knives 730 is preferably one on the top and bottom of one ribbon, that is, four in total, in order to remove excess flux present on the top and bottom of the two strands of ribbon.

FIG. 9A is a schematic diagram illustrating a solar cell supply apparatus 800 according to an exemplary embodiment of the present invention, and FIG. 9B is an enlarged perspective view of part A of FIG. 9A.

The taber-stringer may further include a solar cell supply device 800 that automatically supplies the solar cell to the main conveyor 2.

The solar cell supply apparatus 800 includes an optical inspection unit 810 for inspecting a solar cell (visual inspection); a loading conveyor 820 for moving a magazine loaded with a solar cell before optical inspection; An unloading conveyor 830 for moving a magazine loaded with a battery; A mobile robot for optically inspecting a solar cell loaded in the magazine of the loading conveyor 820 and then moving it to the magazine of the main conveyor or the unloading conveyor 830. 840); an elevator 850 for moving the solar cell stack loaded in the magazines of the loading conveyor 820 and the unloading conveyor 830 up and down; the magazine of the loading conveyor 820 to the unloading conveyor 830. It may be made of a propeller 860 to move.

The mobile robot 840 may be a scara robot.

Hereinafter, a solar cell supply apparatus 800 according to an exemplary embodiment of the present invention will be described in the order in which the solar cell moves from the loading conveyor 820 to the main conveyor 2 or the unloading magazine 831.

First, the loading magazine 821 on which the solar cell is loaded is located at the distal end of the loading conveyor 820 and the unloading magazine 831 is located at the start of the unloading conveyor 830.

As the elevators 850 located below the two conveyors are raised, the solar cell stack is raised to a predetermined adsorption point. Thereafter, the mobile robot 840 moves to the adsorption point to adsorb one solar cell and moves to the optical inspection unit 810 to perform optical inspection.

As a result of the optical inspection, if it is determined that the solar cell is normal, the solar cell is moved to the main conveyor 2. However, when it is determined that the solar cell is defective as a result of the optical inspection, the solar cell is loaded in the unloading magazine 831 located at the beginning of the unloading conveyor 830.

When the solar cell of the loading magazine 821 on which the solar cell is loaded is exhausted by repeating the above process, the unloading magazine 831 moves through the unloading conveyor 830, and the propeller 860 The loading magazine 821 is moved to the beginning of the unloading conveyor 830, and a new loading magazine 822 loaded with solar cells is moved to the end of the loading conveyor 820.

In the above process, when the mobile robot 840 adsorbs the solar cell, it is preferable to provide an air vent 870 at the position of the adsorption point so that only one solar cell can be adsorbed.

In the past, when the solar cells loaded in the magazine were exhausted by the mobile robot, it had to be replaced by a new magazine loaded with the solar cells by manual operation.The solar cells judged to be defective were placed on a shelf at a certain position. If it was over a certain amount, the worker had to collect it and store it in another location. Therefore, the worker should always have managed it by the side.

Solar cell supply device 800 according to an embodiment of the present invention is equipped with the loading and unloading conveyor 820, 830 and the propeller 860 is automatically exhausted magazine to the unloading conveyor 830 By moving, smooth supply of solar cells, labor cost reduction, and work convenience can be attained.

As mentioned above, although this invention was demonstrated by the limited embodiment and drawing, this invention is not limited by this, The person of ordinary skill in the art to which this invention belongs, Various modifications, changes and variations are possible without departing from the scope of the claims to be described.

1 is a flowchart schematically showing a manufacturing process of a solar cell module.

2A and 2B schematically illustrate a taber-stringer according to an embodiment of the present invention.

Figure 3 is a perspective view of the ribbon leveler of the taber-stringer in accordance with an embodiment of the present invention.

4 is a perspective view illustrating a ribbon cutter, a first gripper, and a second gripper of the taber-stringer according to an embodiment of the present invention.

Figure 5 is a perspective view showing the flux coating of the taber-stringer according to an embodiment of the present invention.

6 is a view showing the flux coating portion of the solar cell and the ribbon and the order in which the solar cell and the ribbon are placed.

Figure 7a is a perspective view showing the soldering portion of the taber-stringer according to an embodiment of the present invention, Figure 7b is a front view, Figure 7c is a bottom view.

Figure 8a is a perspective view showing the flux coating of the taber-stringer according to another embodiment of the present invention, Figure 8b is a side view.

9A is a schematic view showing a solar cell supply apparatus of a taber-stringer according to an embodiment of the present invention, and FIG. 9B is an enlarged perspective view of part A of FIG. 9A.

<Description of the symbols for the main parts of the drawings>

1 Ribbon Reel 2 Main Conveyor

100 Ribbon Leveler 110 Entry Guide

120 Exit Guide 130 Roller

140 Screw 200 Ribbon Cutting Machine

210 Ribbon cutting block 220 Drop prevention block

300 2nd Gripper 320 Vacuum Suction Unit

400 First Gripper 420 Ribbon Holder

500 Flux Coating Part 520 Flux Injection Nozzle

600 Soldering Part 610 Body

620 Cooling air outlet 630 Fixing part

640 Heated Air Nozzle 700 Flux Coating

710 flux tank 720 roller

730 air knife 800 solar cell supply

810 Optical Inspection 820 Loading Conveyor

830 Unloading Conveyor 840 Mobile Robot

850 elevator 860 propeller

870 air vents

Claims (12)

A ribbon leveler for straightening the ribbon by correcting up, down, left, and right bending of the ribbon supplied from the ribbon reel; A ribbon cutter for cutting the ribbon flattened by the ribbon leveler; A first gripper for holding one end of the ribbon cut by the ribbon cutter; A second gripper for moving the cut ribbon to a main conveyor; Flux coating for applying the flux to the solar cell or the ribbon; And Includes; Soldering unit for bonding the solar cell and the ribbon; The flux coating part A linear robot coupled to the rail; Two flux injection nozzles coupled to the linear robot; Taber-stringer characterized in that consisting of. Flux coating for applying the flux to the ribbon supplied from the ribbon reel; A ribbon leveler for flattening the ribbon by correcting up, down, left, and right bending of the ribbon supplied from the flux coating unit; A ribbon cutter for cutting the ribbon flattened by the ribbon leveler; A first gripper for holding one end of the ribbon cut by the ribbon cutter; A second gripper for moving the cut ribbon to a main conveyor; and Includes; Soldering unit for bonding the solar cell and the ribbon; The flux coating part A flux tank containing the flux; A roller for applying the flux to the ribbon supplied from the ribbon reel; An air knife which distributes the flux evenly on the ribbon by injecting air onto the ribbon on which the flux is applied after passing through the roller; Taber-stringer characterized in that consisting of. According to claim 1 or claim 2, wherein the ribbon leveler is a guide guide for correcting the bending by introducing the ribbon supplied; A plurality of rollers disposed above and below the ribbon passing through the pull guide to correct bending of the ribbon; And a discharge guide for guiding the ribbon passing through the roller to the ribbon cutter. The taber stringer according to claim 3, wherein the rollers are arranged in two rows, and the rollers are arranged in a staggered manner. The taber stringer according to claim 3, wherein the ribbon leveler further comprises a screw for adjusting a width between the left and right ribbons. The taber stringer according to claim 1 or 2, wherein the ribbon cutter includes a ribbon drop preventing block under the ribbon cutting block so that the ribbon does not fall to the bottom after the ribbon is cut. According to claim 1 or claim 2, wherein the second gripper is a linear robot coupled to the rail; Taber-stringer comprising a vacuum adsorption portion for adsorbing the cut ribbon using a vacuum. According to claim 1 or 2, wherein the soldering portion main body; A heated air nozzle which bonds the solar cell to the ribbon by spraying hot air; Cooling air outlet for cooling the junction of the solar cell and the ribbon; And Taber-stringer comprising a; fixing portion for pressing and fixing the junction of the solar cell and the ribbon. The taber stringer according to claim 1 or 2, further comprising a solar cell supply device for automatically supplying a solar cell to the main conveyor. The method of claim 9, wherein the solar cell supply device An optical inspection unit inspecting the solar cell; A loading conveyor for moving a magazine loaded with solar cells before optical inspection; An unloading conveyor for moving a magazine loaded with a solar cell determined to be defective after the optical inspection; A mobile robot for optically inspecting the solar cell loaded in the magazine of the loading conveyor and then moving to the magazine of the main conveyor or the unloading conveyor; An elevator for moving the solar cell stack loaded in the magazine of the loading conveyor and the unloading conveyor up and down; And a thruster for moving the magazine of the loading conveyor to the unloading conveyor. The taber-stringer of claim 10, wherein the solar cell supply device further comprises an air blower for injecting air when the mobile robot adsorbs the solar cell loaded in the magazine of the loading conveyor. In the tabbing-stringing process of the solar cell module manufacturing process, two movable flux injection nozzles are used. Applying flux to a portion of the upper surface of the solar cell on which the ribbon is to be placed; Placing a ribbon on top of the solar cell; And applying flux to a portion of the upper surface of the ribbon on which the solar cell is to be placed.

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