KR101134085B1 - Pre-treatment manufacturing process of solar cell modules - Google Patents

Abstract

PURPOSE: A manufacturing process of the pre processing of a solar cell module is provided to block inferior goods not to be transferred using a laminating process and improve production by performing E/L(Electrical) test, inspection, and repair processes after forming a module semi-product. CONSTITUTION: An EVA(Ethylene Vinyl Acetate) lamination process(100) laminates EVA on glass. A string assembly formation process(101) forms a string assembly by connecting a ribbon projected from a string end part by brazing. A module semi-product formation process(102) forms a module semi-product by successively laminating the EVA and a back sheet on an upper part of the string assembly. An E/L(Electrical) test process(103) tests a withstand voltage for a fixed voltage and checks the generation of a leakage current in a cell battery. The good quality product discharging step(104) discharges the good quality of the module semi-product by a laminating process.

Description

Pre-treatment manufacturing process of solar cell modules

The present invention relates to a pre-processing manufacturing process of a solar cell module for manufacturing a module semi-finished product, which is a semi-finished product of a solar cell module, using a string in which a plurality of cell batteries are connected in series with a conductor ribbon. For example, the EVA lamination process is placed in front of the production process, and the string assembly forming process is placed on the side of the production process, so that basic parts such as glass, EVA, string, etc. can be supplied smoothly, and the length of the production process can be shortened. Afterwards, the E / L test process and inspection and repair process are executed, and the laminating process, which will be performed later, is intended to cut off the supply of defective products and to improve the work flow while improving productivity.

Conventionally, the invention of patent registration No. 10-0903950 (name of the invention: a solar cell module automated manufacturing apparatus and a manufacturing method using the same) has been published in the patent publication, it is known to the solar cell module automated manufacturing method according to the conventional invention The claims are set forth as follows.

That is, the solar cell module automated manufacturing method of the present invention by using a solar cell module automated manufacturing apparatus to sequentially transfer the strings to inspect and align, and to automatically transfer the strings aligned while sequentially transferring the alignment jig in which the strings are arranged Soldering the ribbon to the ribbon by the soldering device and simultaneously cutting the ribbon to a certain length and automatically supplying the solar cell module through laminating the soldered string S on the coating member made of glass and EVA (EVA) It is characterized by manufacturing.

4 is a process flow chart showing a process procedure manufactured by the manufacturing apparatus of the present invention, in order to manufacture a solar cell module by the conventional manufacturing apparatus using a tabbing machine (Tabbing M / C) a plurality of cell cells (2) ) Must be preceded by a process of manufacturing a cell assembly in which the string 7 is connected in series with the ribbon 3 of the conductor to form a string 7 as shown in FIG.

As described above, the strings of a plurality of strings 7 manufactured in the cell assembly manufacturing process are supplied to the layup machine 201 so that the ribbons protruding at both ends of the string 7 can be cut to a predetermined dimension. After aligning, the ends of the protruding ribbon are cut at both ends of the string, and the strings of the plurality of strings thus cut at the end of the ribbon are placed on the alignment jig.

The alignment jig with multiple strings is then moved to the workspace of the autobushing machine 202, after which the separate ribbons to connect the ribbons of the strings are soldered and the ribbons are moved to the soldering position. Soldering (soldering) with ribbons protruding at the end forms a string assembly 8 as shown in Fig. 1C, and the string assembly 8 thus formed is transferred to the stacked conveyor 203.

On the other hand, solar cell module automated manufacturing apparatus is a lay-up machine 201 and the auto bushing machine 202, laminated conveyor 203, module tower holder 204, manual work table 205 is disposed long in the longitudinal direction " Line "A" and "B" line disposed in the vertical direction to the laminated conveyor 203 located in the middle of the "A" line is composed of a "T" shape as a whole, the above "B" line is a glass It consists of a feeding machine 206, an Eva cutting machine 207, a conveying conveyor 208.

In the state where the string assembly 8 is transferred to the stacked conveyor 203 of the "A" line as described above, in the "B" line, a sheet of paper is inserted between the glass and the glass in the glass feeding machine 206. 1 piece of glass is seated in the working position while removing the sheet paper, and the EVA wound on the roll of the cutting machine 207 is cut to the size of the glass while seated on the upper surface of the glass, and the EVA is seated on the glass. It is conveyed to the laminated conveyor 203 on the line "A" through the conveying conveyor 208.

The stacked conveyor 203 on the "A" line is installed so that the trays can be raised and lowered as the trays are stacked in multiple stages, such as a drawer, and supplied to the stacked conveyor 203 through the transfer conveyor 208 of the "B" line. The glass on which the EVA is seated is placed directly on the upper surface of the laminated conveyor 203, and the string assembly 8 placed on the tray on it is mounted on the glass on which the EVA is seated.

As described above, the semi-finished product having the string assembly 8 mounted on the glass in the stacked conveyor 203 is moved to the module tower holder 204 of the "A" line, and in the case of the module tower holder 204, The trays are stacked up and down, and each tray is moved in and out of a drawer shape and movable up and down so that the semi-finished product on which the string assembly 8 is placed is placed on each tray of the module tower holder 204.

The semi-finished product with the string assembly 8 loaded on the tray of the module tower holder 204 as described above is taken out by one set by the worker working on the manual work platform 205, and then after the taping work and the insulation paper attaching work. EVA and a back sheet are attached to the upper surface to complete the module semifinished product 1 as shown in FIGS. 2 and 3.

The module semi-finished product 1 thus prepared is to complete the manufacturing of the solar cell module through a laminating process, which is a subsequent process, and the taping operation is performed on the EVA 5 on the glass 5 as shown in FIG. Putting down the string assembly 8 on the EVA 4 in the state of EVA 4 refers to attaching the outer edge of the string assembly 8 with a tape so that it does not move and become distracted during operation. The insulating paper attaching operation refers to interposing or attaching insulating paper, which is a non-conductor, in order to prevent electrical contact between the conductor ribbons exposed at both ends of the string assembly 8 with the electrode portion of the cell battery.

In the conventional manufacturing method manufactured through the above process, since there is no process of inspecting the defect of the cell battery in the entire manufacturing process, even if damage occurs in the manufacturing process, the module semi-finished product containing the damaged cell battery is a subsequent process. There was a problem that the defective rate is increased by supplying to the inlaminating process.

In addition, the taping work performed on the manual work bench 205, the insulation paper attaching work, and the laminating operation of the EVA and the backsheet are performed by hand at one work bench, and the module tower stacker 204, which is the whole process, is performed. As the semi-finished product in which the string assembly 8 is stacked is stacked on the glass on which the EVA is mounted, the manual work on the manual work platform 205 is delayed, and the EVA is mounted on the module tower loading stand 204. The semifinished product in which the string assembly 8 is stacked on the grass is stagnated.

When congestion is made in the module tower holder 204 as described above, since the number of trays installed in the module tower holder 204 is limited, the string assembly 8 on the glass on which more EVA is seated than the number of trays is mounted. When the semi-finished products are stacked, the manual work is performed on the manual work platform 205 while the conveyor line is stopped from the process in which the layup machine 201 is installed to the process in which the module tower holder 204 is installed. If the manual work of the workbench 205 is smooth, it is only necessary to start the conveyor line again, so there is a problem that productivity is lowered.

In addition, the production line according to the conventional manufacturing method has another problem that is disposed long in the longitudinal direction from the lay-up machine 201 to the manual work table 205 to occupy a large installation area of the production plant.

Patent registration No. 10-0903950 (Invention name: solar cell module automated manufacturing apparatus and manufacturing method using the same)

The present invention is to solve the above problems, in addition to the process of manufacturing the module semi-finished product and adding the process of inspecting the appearance of the module semi-finished product as a whole, as well as defective cells appear in the inspection process good quality cell battery After repairing it, it is inspected again and discharged to the laminating process, which is a subsequent process only when it is judged as good quality, to minimize the defect rate, and the EVA lamination process is placed in front of the production process. It is a technical task to ensure that the work is continuously made by improving the productivity by placing the processed product manufactured in the corresponding process for each process and placing it in the subsequent process.

In addition, the module semi-finished product forming process is conventionally performed by taping work, attaching insulation paper, and laminating EVA and back sheet on one work bench, taking into consideration that congestion occurs, Another technical task is to make the work smoothly without any congestion by performing insulation paper attaching work and laminating work of EVA and back sheet.

The present invention for achieving the above object, EVA lamination process of laminating EVA on the glass, string assembly forming process of forming a string assembly by connecting a plurality of strings by soldering operation, EVA lamination through the EVA lamination process Modular semi-finished product forming process of attaching taping and insulation paper with laminated string assembly on glass EVA and stacking EVA and back sheet on string assembly in order to form modular semi-finished product, and E / C for testing the breakdown voltage of semi-finished semi-finished product It consists of the L test process, the product discharge process of discharging the module semi-finished product of the good product to the laminating process as a result of the E / L test, and the inspection and repair process of repairing the defective product after the E / L test result and transferring it to the E / L test process. do.

As described above, the present invention adds a process of inspecting the appearance of the module half product as a whole as well as damage of the cell battery during the manufacturing process of the module half product, and replaces and repairs a defective cell battery if a defective product appears in the inspection process. After that, it is inspected once more and discharged to the laminating process, which is a subsequent process only when it is determined to be a good product, to minimize the defect rate, and to place the string assembly forming process at the front of the production process. In each process, the processed product manufactured in the corresponding process is loaded and then supplied to the subsequent process, thereby improving the productivity.

In addition, the module semi-finished product forming process is conventionally performed by taping work, attaching insulation paper, and laminating EVA and back sheet on one work bench, taking into consideration that congestion occurs, Insulating paper attachment work, and by carrying out the operation of laminating the EVA and the back sheet, there is an effect that the work is made smoothly without any congestion.

1 to 3 is a view showing a workpiece manufactured in the process of manufacturing a solar cell module,
Figure 1 (a) is a plan view of the string produced in the tebbing process.
1B is an explanatory diagram showing an EVA lamination step.
Figure 1 (c) is a perspective view showing a string assembly manufactured in the string assembly forming step.
Figure 1 (d) is an explanatory diagram showing a process for forming a module semi-finished product.
Figure 2 is an exploded perspective view of a module semi-finished product manufactured in the module semi-finished product forming process.
Figure 3 is a longitudinal cross-sectional view of the module semi-finished product manufactured in the module semi-finished product forming process.
Figure 4 is a process flow diagram showing a conventional manufacturing process.
5 is a process flow diagram showing a manufacturing process of the present invention.
6 is a planar view showing a manufacturing process of the present invention shown in FIG.

Hereinafter, with reference to the accompanying drawings Figures 1 to 3 and 5, 6 for the pre-processing manufacturing process of the solar cell module according to the present invention.

As shown in (a) of FIG. 1, the present invention utilizes a string 7 formed by connecting a plurality of cell batteries 2 in series with a ribbon 3 of a conductor, as shown in FIGS. 2 and 3. It is to manufacture the module semi-finished product (1), the module semi-finished product (1) manufactured in the manufacturing process of the present invention is to complete the manufacturing of the solar cell module while going through the laminating (Laminating) process is a subsequent process.

The pre-working manufacturing process of the present invention for manufacturing the module semi-finished product 1 includes an EVA lamination process 100 for laminating the EVA 4 on the glass 5 as shown in FIGS. A string assembly forming step 101 of connecting the strings 7 by soldering to form the string assembly 8 and the string assembly 8 on the EVA 4 of the EVA laminated glass which has been subjected to the EVA laminating process 100. The module semi-finished product forming process 102 of attaching taping and insulating paper and stacking the EVA (4) and the back sheet 6 on the string assembly 8 in order to form the module semi-finished product 1 in the stacked state. E / L test step 103 for testing the withstand voltage for (1), E / L test result, good product discharge step 104 for discharging good quality module semi-finished product 1 to laminating step, and E / L test result In the inspection and repair process 105 for repairing defective goods and transporting them to the E / L test process 103. Is done.

The EVA lamination step 100 is a step of laminating the EVA (4) on the glass (5), the EVA is that a plurality of sheets of glass (5) in the state interposed in a separate pallet is laminated EVA After supplying to the upper surface of the work bench 302 by using the glass feeder 301 of the lamination process part 100a, the worktable 302 is released while unwinding the EVA 4 wound on the roll of the EVA feeder 303 in the other direction. Laminated on the upper surface of the glass (5) placed on, the EVA (4) is cut to fit the size of the glass (5) so that the EVA (4) is placed on the glass (5).

In this case, the glass 5 is interposed between the glass 5 so that the glass is exposed by removing the adsorption in the glass supply 301, so that the glass 5 is adsorbed by the adsorber It is to be seated on the work table 302, the EVA (4) has a predetermined viscosity, so as to stick to the upper surface of the glass (5) as shown in Figure 1 (D).

Thus, the EVA 4 is placed on the top surface of the glass 5 is called EVA laminated glass, and this EVA laminated glass is placed on the first loading table 304 in which a plurality of trays are provided in multiple drawer shapes.

As described above, the EVA 4 is laminated on the glass 5 in the EVA stacking process 100 and the EVA stacking glass is placed on the first loading table 304. In the other string assembly forming step 101a, the string is formed. The string assembly forming step 101 of forming the assembly 8 is performed.

In the string assembly forming step 101, a string 7 formed in a string former 305 which connects a plurality of cell cells 2 in series with a ribbon 3 of a conductor to form a string 7 is a worktable 306. It is supplied by the alignment jig on the top.

Then, the alignment jig on which the string is placed is transferred to the cutter 307, and then the cutter 307 is fitted to the size of the string assembly 8 to produce the ribbon 3 end portions projecting outwardly at both ends thereof. As a result, these strings 7 are arranged in alignment.

Subsequently, a string of strings cut at the end of the ribbon is transferred to the soldering machine 308, and then connected by soldering to form a string assembly 8 as shown in FIG. ) Is placed on the second loading stand 309 in which a tray of multiple stages is installed in a drawer shape.

As described above, in the EVA stacking process 100, a plurality of EVA stacking glasses are deposited on the first stacking stage 304, and the plurality of string assemblies 8 formed in the string assembly forming process 101 are formed in the second stacking stack ( 309), the module semi-finished product forming step 102 of forming the module semi-finished product 1 is executed in the module semi-finished product forming step 102a.

This module semi-finished product forming step 102 includes a set of EVA laminated glass (one EVA placed on one glass) placed on the first loading table 304, and the EVA laminated processing portion 100a and string assembly forming work. It rests on the work platform 310 where the government 101a meets, and after placing one string assembly 8 loaded on the second loading stand 309 on it, a number of these "A" semi-finished products (grass + EVA + string assembly) are placed. Trays are placed on the third loading stand 311 installed in the form of a drawer.

The string assembly 8 located at the top of the "A" semi-finished product is removed from the first set of "A" semi-finished products placed on the third loading stand 311 and transferred to the first work bench 312. ) Taping to tape the outer edges of the string assembly 8 so that the position of the string assembly 8 is not distracted from the upper side of the EVA 4 below, and the ribbon of the string assembly 8 is attached thereto. Insulating paper attaching operation is carried out to attach the insulating paper to the end of the ribbon 3 so as to block (3) from being shorted with the ribbon 3 connected to each string 7.

After the taping and insulating paper is attached, the "A" semi-finished product is moved to the secondary work bench 313, and then another EVA (4) is placed on the string assembly 8 of the "A" semi-finished product as shown in FIG. ) And the back sheet 6 are laminated to form the module semi-finished product 1.

In the module semi-finished product forming process 102, the primary work bench 312 for taping and attaching insulation paper and the secondary work bench 313 for laminating the EVA 4 and the backsheet 6 are separately installed and the corresponding work. By dividing into two places, it is possible to realize a smooth workflow by eliminating the congestion of the workpieces when running manually in one place in the past.

In addition, in the EVA lamination process 100, the string assembly forming process 101, and the module semi-finished product forming process 102, the process of depositing the workpieces on the respective loading posts 304, 309, and 311 may be performed in the operation of the subsequent process. This is to ensure that the work is carried out smoothly by taking the processed goods that have been stacked when the subsequent work is completed while stacking the workpieces in multiple stages so as not to stagnate.

The module semi-finished product 1 formed in the module semi-finished product forming process 102 as described above is sent to the E / L inspection table 314 to test the withstand voltage of the string assembly 8 included in the module semi-finished product 1. When the withstand voltage is tested in the E / L test step 103, if there is no abnormality in the product, the tray 103 is placed on the fourth loading stand 315 installed in the form of a drawer in multiple stages. In the laminating process, a good product discharge process 104 for discharging the module semi-finished product 1 of good quality is performed.

As a result of testing the withstand voltage of the string assembly 8 included in the module semi-finished product 1 in the E / L test process 103 as described above, if a defect is found in the string assembly 8, the defective product is inspected and repaired. Inspection and repair process 105 is performed.

The inspection and repair process 105 places the module semi-finished product 1 including the string assembly 8 found in the E / L test process 103 on the fifth mounting bracket 319 and then moves to the movable work platform 316. The new cell battery without any abnormality is sent to the inspection and repair stand 317, and the visual inspection of the defective parts of the module semi-finished product 1 sent to the inspection and repair stand 317 is performed. Carry out repair work replacing with 2).

The module semi-finished product 1 inspected and repaired in this way is sent back to the E / L inspection table 314 through another mobile work platform 318 to perform a test operation on the repaired module semi-finished product 1 again.

As described above, the module semi-finished product (1) is tested again, and the good product is sent to the product discharge process 104, and the defective product is sent to the inspection and repair process 105 to perform the inspection and repair work. And the repair table 317 replaces the cell battery 2 in which the first defective product is found with a new one, and the soldering defects of the ribbon have been eliminated, so that the occurrence of the second failure is extremely rare. The pre-processing manufacturing process of the solar cell module is completed.

Reference numeral "103a" in the reference numerals denotes an E / L test process unit, "104a" denotes a good product discharge process unit, and "105a" denotes an inspection and repair process unit.

1 module semi-finished product 2 cell battery 3 ribbon
4: EVA 5: glass 6: backsheet
7: string 8: string assembly
100: EVA lamination process 101: string assembly forming process
102: module semi-finished product forming process 103: E / L test process
104: good product discharge process 105: inspection and repair process (105)
301: glass feeder 302: workbench 303: EVA feeder
304: first loading rack 305: string forming machine 306: working table
307: cutter 308: soldering machine 309: second loading
310: work bench 311: third loading deck 312: primary work bench
313: 2nd manual work platform 314: E / L inspection table 315: 4th loading platform
316: mobile work platform 317: inspection and repair platform 318: mobile work platform

Claims (2)

An EVA lamination process (100) for laminating the EVA (4) on the glass (5),
After cutting the end portions of the ribbons 3 protruding from both ends of the strings 7 in which the plurality of cell cells 2 are connected in series with the conductor ribbons 3 to a predetermined length, the strings of the strings 7 are fixed at regular intervals. A string assembly forming step 101 of forming a string assembly 8 by connecting the ribbons 3 protruding from the ends of each string 7 by soldering;
In the EVA lamination process 100, the string assembly 8 is attached to the outer edge of the string assembly 8 in a state in which the string assembly 8 is laminated on the EVA 4 laminated to the glass 5, and then to both ends of the string 7. After attaching the insulating paper to the end of the protruding ribbon 3, the module semi-finished product forming step 102 of forming the module semi-finished product 1 by sequentially laminating the EVA 4 and the backsheet 6 on the string assembly 8. )and,
E / L test process 103 for testing whether the leakage current in the cell battery 2 is generated and the withstand voltage with respect to the set voltage by applying the set voltage to the module semifinished product 1 formed in the module semifinished product forming step 102; ,
Good quality discharge process 104 which discharges the module semi-finished product 1 of good quality as a result of E / L test, and
As a result of the E / L test, after replacing and repairing the defective cell battery (2) included in the defective module half product (1) with the separately supplied good quality cell battery (2), the repaired module half product (1) is subjected to E / L test. Pre-processing manufacturing process of the solar cell module, characterized in that consisting of the inspection and repair step 105 to be transferred to the step (103). The string assembly (8) according to claim 1, wherein the EVA (4) is laminated on the glass (5) in the EVA stacking step (100) on the first loading table (304) and the string assembly (8) formed in the string assembly forming step (101). ) Is placed on the second mounting table 309 and the EVA 4 is laminated on the glass 5 according to the working speed of the module semi-finished product forming process 102 and the string assembly 8 is formed on the module semi-finished product forming process 102 ) And stacking the string assembly 8 on the EVA 4 in the module semi-finished product forming process 102 is placed on the third loading stand 311, and according to the working speed of the module semi-finished product forming process 102. Pre-processing manufacturing process of the solar cell module, characterized in that the tape and insulation paper attaching work.

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