JP2015076525A - Solar cell module-manufacturing device, and solar cell module-manufacturing method using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a solar cell module-manufacturing device, and a solar cell module-manufacturing method using the same, securely removing a filler attached to a carrying sheet of a laminate device to achieve high photoelectric conversion efficiency.SOLUTION: A filler 7 of a solar cell module 30, heated by a laminate device, protruded from a surface of a glass substrate 31, is attached to a carrying sheet 2 of a laminate device 10. In order to sufficiently remove the attached filler 7, a cooling unit 4 for cooling the carrying sheet 2 is provided for cooling the carrying sheet 2, to thereby cool to a fusion temperature or lower and harden the filler 7 for easy removal thereof. At a part of a carrying roller 3c at which a running direction of the carrying sheet 2 is changed, a diameter of the carrying roller is reduced for easy peel off of the filler 7 from the carrying sheet 2. A part of the filler 7 which is peeled is securely removed using rotary brushes 5a, 5b and a scraper 6.

Description

  The present invention relates to a solar cell module manufacturing apparatus and a solar cell module manufacturing method using the same.

  Conventionally, a manufacturing technique of a solar cell module in which a filler made of a resin sheet, a connected solar cell cell array, a filler, and a back sheet are sequentially laminated on a glass substrate, and the filler is cured and resin-sealed has been proposed. Yes. In order to prevent the filler from adhering to the glass substrate surface of the solar cell module, which is a workpiece, during laminating, a laminating apparatus including a scraper and a brush roll is disclosed (Patent Document 1). . The laminating apparatus includes a scraper provided outside the chamber so as to be in contact with a conveyance surface of a conveyance belt (conveyance sheet), a brush roll provided so as to be in contact with a conveyance surface of the conveyance belt and driven by a rotary actuator, It has.

JP 2004-238196 A

  However, according to the conventional apparatus, it is difficult to remove the filler adhering to the conveying sheet in the laminating apparatus, and it is insufficient to prevent the filler from adhering to the glass substrate surface of the solar cell module. Therefore, the filler protruding from the solar cell module adheres to the conveying sheet of the laminating apparatus. The adhering filler could not be removed sufficiently with only a scraper or a rotating brush. In that case, the filler adhering to the conveying sheet is heated again by the laminating apparatus and adheres to the glass substrate surface of the solar cell module to be conveyed and laminated next. The solar cell module in which the filler adheres to the surface of the glass substrate cannot obtain sufficient photoelectric conversion efficiency. Therefore, the filler adhering to the conveying sheet of the laminating apparatus must be sufficiently removed.

  This invention is made | formed in view of the above, Comprising: It aims at obtaining the manufacturing apparatus and solar cell module manufacturing method of a solar cell module with high photoelectric conversion efficiency.

  In order to solve the above-described problems and achieve the object, the solar cell module manufacturing apparatus of the present invention is a method of laminating a substrate, a solar cell, and a filler, heat-curing, and performing resin sealing, A transport unit that mounts and transports a substrate, a stacked unit in which solar cells and fillers are stacked on the substrate transported from the transport unit, and a stacked body that is transported by the transport unit And a laminating apparatus that forms a solar cell module by heating and pressurizing. In this laminating apparatus, the laminated body, which is transported to the inlet of the laminating apparatus by the heating unit that heats and pressurizes the laminated body, is placed and transported to the heating unit, and the laminating process is completed. A transport sheet for transporting the obtained solar cell module to the transport section at the transport exit of the laminating apparatus, a transport roller after transporting the transport sheet at the back of the heating section and returning it to the transport entrance, and a transport exit And a cooling unit that cools the filler adhering to the conveyance sheet, and the conveyance roller is a portion that changes the traveling direction of the conveyance sheet between the cooling unit and the conveyance port. In the present invention, the diameter is smaller than the conveyance roller at the carry-out port.

  According to the present invention, after the filler is cured in the cooling unit, the conveyance sheet is changed along the outer shape of the conveyance roller by reducing the diameter of the conveyance roller at the portion where the traveling direction of the conveyance sheet changes. Elastically deforms. When the elastic force generated by this deformation exceeds the adhesive force of the filler, the bond is released. When the outer diameter of the conveying roller is reduced, deformation is partially concentrated and the elastic force is partially increased, so that the adhesive force is exceeded and the adhesion is released. Thus, by sufficiently removing the filler adhering to the conveying sheet of the laminating apparatus, it is possible to prevent the filler from adhering to the glass substrate surface of the solar cell module to be laminated next. Therefore, the effect that the malfunction on the external appearance of a solar cell module can be prevented is produced.

FIG. 1 is a schematic sectional view seen from the side of a laminating apparatus according to Embodiment 1 of the present invention. FIG. 2 is a main part enlarged view showing a portion from which the filler is removed, and (a) and (b) are views showing a peeling process of the attached filler. FIG. 3 is an enlarged view of a main part showing a portion from which the filler is removed, and (a) and (b) are diagrams showing a process of peeling the attached filler. FIG. 4 is an enlarged view of a main part showing a cooling part for cooling the adhering filler. FIG. 5 is an enlarged exploded perspective view of a main part of the solar cell module. FIG. 6 is a view showing the filler protruding from the surface of the glass substrate of the solar cell module on the transport sheet. FIG. 7 is a view showing the filler protruding from the surface of the glass substrate of the solar cell module on the transport sheet. FIG. 8 is an enlarged view showing a main part of the cooling unit of the laminating apparatus according to the second embodiment of the present invention. FIG. 9 is an enlarged view of a main part showing a cooling part of the laminating apparatus according to Embodiment 3 of the present invention, and (a) and (b) are views showing a peeling process of the adhering filler. FIG. 10 is a schematic cross-sectional view seen from the side of the laminating apparatus of the comparative example. FIG. 11 is an enlarged view of a main part showing a portion where the filler adhering to the transport sheet in the laminating apparatus of the comparative example is removed. FIG. 12 is a diagram showing a state where a filler adheres to the glass substrate surface of the solar cell module to be laminated in the laminating apparatus of the comparative example.

  Embodiments of a solar cell module according to the present invention will be described below in detail with reference to the drawings. In addition, this invention is not limited to the following description, In the range which does not deviate from the summary of this invention, it can change suitably. In the drawings shown below, the scale of each member may be different from the actual scale for easy understanding.

Embodiment 1 FIG.
A method for removing the filler adhering to the conveying sheet of the laminating apparatus in the solar cell module manufacturing apparatus and manufacturing method according to Embodiment 1 of the present invention will be described with reference to FIGS. FIG. 1 is a schematic sectional view seen from the side of a laminating apparatus according to Embodiment 1 of the present invention. 2 (a), 2 (b) and 3 (a), 3 (b) are enlarged views of a main part showing a portion from which the filler is removed. FIG. 4 is an enlarged view of a main part showing a cooling part for cooling the adhering filler. FIG. 5 is an enlarged exploded perspective view of a main part of the solar cell module. This device is a solar cell module manufacturing device in which a substrate, a solar battery cell, and a filler are stacked, heat-cured, and resin-sealed. In this apparatus, the conveyance sheet 2 is cooled by the cooling unit 4 and the adhering filler 7 is cured. And the elastic force is applied to a conveyance sheet | seat by changing a running direction with a conveyance roller smaller diameter than in a carrying-out port, and the hardening filler 7 is peeled. The filler 7 protruding from the solar cell module 30 heated by the laminating apparatus 10 is peeled off from the transport sheet 2. Thus, by removing the filler 7 from the conveying sheet 2 of the laminating apparatus 10, the solar cell module supplied next is prevented from being contaminated by the reattachment of the filler 7. Here, a thermoplastic resin such as EVA (ethylene vinyl acetate copolymer resin) is used as the filler.

  As shown in FIG. 1, the solar cell module manufacturing apparatus includes a transport unit 20 a that places and transports a glass substrate 31 on the upstream side of the transport unit 20 a, a stacked unit (not shown), and a stacked body. A laminating apparatus 10 that forms the solar cell module 30 by heating and pressurizing, and a transport unit 20b that carries out the solar cell module 30 are provided. In this laminated portion, as shown in an exploded perspective view in FIG. 5, on the glass substrate 31 transported from the transport portion 20 a, a solar cell 32, a filler 34 b, interconnected with a filler 34 a and a tab wire 33, The cover sheets 35 are sequentially laminated to form a laminated body. Then, the laminating apparatus 10 includes a heating unit 1 including an upper chamber 1a, a lower chamber 1b, a diaphragm 1D, and a heater 1H that heats and pressurizes the laminated body, and conveyance for carrying in and out of the heating unit 1. Sheet 2. The transport sheet 2 receives the stacked body transported to the transport inlet 10 i of the laminating apparatus 10 by the transport unit 20 a, places it, and transports it to the heating unit 1. Moreover, the conveyance sheet 2 carries out the solar cell module 30 obtained by completing the laminating process to the conveyance unit 20 b on the downstream side at the carry-out port 10 o of the laminating apparatus 10. Although the laminate is not shown here, it is a laminate on the upstream side of the laminating apparatus 10, and the fillers 34 a and 34 b are cured on the downstream side after the heating and pressurizing treatment to form the solar cell module 30. .

  Furthermore, the laminating apparatus 10 is positioned between the first to fourth transport rollers 3a to 3d, the carry-out port 10o, and the carry-in port 10i, and a cooling unit 4 that cools the filler 7 adhered on the transport sheet 2; Is provided. These 1st-4th conveyance rollers 3a-3d convey the solar cell module 30 in the advancing direction shown by arrow D1, and carry it out to the conveyance part 20b. And these 1st-4th conveyance rollers 3a-3d convey the conveyance sheet 2 after carrying out by the back part of the heating part 1, and return it to the carrying-in entrance 10i.

  Among these first to fourth transport rollers 3a to 3d, the first transport roller 3a is disposed in the vicinity of the carry-in entrance 10i. The second transport roller 3b is arranged in the vicinity of the carry-out port 10o. Further, the third and fourth transport rollers 3c and 3d are arranged on the back side with respect to the first and second transport rollers 3a and 3b at substantially symmetrical positions, and each of the travel directions of the transport sheet 2 is 90 degrees. change. And the diameter of the 3rd and 4th conveyance rollers 3c and 3d is about 1/4 compared with the diameter of the 1st and 2nd conveyance rollers 3a and 3b, and becomes a significantly small diameter. Yes.

  The cooling unit 4 includes a cooling fan 4F and supplies cold air 4W. By providing the cooling fan 4 </ b> F in the cooling unit 4, the filler 7 adhering to the transport sheet 2 is effectively lowered below the melting temperature, and the filler 7 is cured.

  Rotating brushes 5a and 5b and a scraper 6 are provided on the downstream side of the cooling unit 4 with respect to the traveling direction D2 of the transport sheet 2. The scraper 6 is supported by the support base 6S. The rotation direction of the rotating brush is indicated by D3.

  Thus, the filler 7 hardened | cured on the conveyance sheet 2 peels the filler 7 from the conveyance sheet 2 effectively with the 3rd and 4th conveyance rollers 3c and 3d which are very small diameters. Then, the filler 7 can be sufficiently removed from the transport sheet 2 by the rotating brushes 5a and 5b and the scraper 6 provided on the downstream side in the traveling direction D2 of the transport sheet 2.

  Thus, between the carry-out port 10o and the carry-in port 10i, the small-diameter portion having a smaller diameter, that is, the third and fourth carry rollers 3c and 3d are attached to the carry sheet 2 of the laminating apparatus 10. The filled material 7 is elastically deformed along the outer shape of the conveying roller at the portion of the conveying roller. When the elastic force generated by this deformation exceeds the adhesive force of the filler 7, the bond is released. When the outer diameter of the conveying roller is reduced, deformation is partially concentrated and the elastic force is partially increased, so that the adhesive force is exceeded and the adhesion is released. Thus, there is an effect that the filler 7 is peeled off from the conveying sheet 2 by making the conveying roller have a small diameter.

  Therefore, the appearance defect of the solar cell module 30 can be prevented by preventing the filler 7 from adhering to the surface of the glass substrate 31 of the solar cell module 30.

  Next, the operation of the laminating apparatus 10 will be described. The conveyance unit 20 a conveys the stacked body to the conveyance sheet 2. The transport sheet 2 moves the laminate received from the transport unit 20a to a position on the heater 1H in a state where the upper chamber 1a is opened from the lower chamber 1b. The laminated body is disposed via the conveyance sheet 2 at a position on the heater 1H. When the laminate is disposed at a position on the heater 1H and the upper chamber 1a is closed to the lower chamber 1b side, the heating unit 1 starts laminating.

  The heating unit 1 heats the stacked body with the heater 1H while reducing the pressure inside. Thereafter, the heating unit 1 expands the diaphragm 1D by opening the inside of the upper chamber 1a to the atmosphere. The heating unit 1 expands the diaphragm 1D, thereby narrowing the stack with the diaphragm 1D and the heater 1H.

  The heating unit 1 decompresses the light-receiving surface-side filler 34a and the back-surface-side filler 34b on the heater 1H while melting, thereby removing bubbles inside the laminate and receiving the light-receiving-surface-side filler 34a and the back surface. A hermetic seal is formed by the side filler 34b. The layers constituting the laminated body are bonded to each other by heat treatment in the heating unit 1 to form an integrated laminated body, which becomes the solar cell module 30.

  The heating unit 1 finishes the laminating process and opens the lower chamber 1b to the atmosphere, and then the upper chamber 1a is opened. In the state where the upper chamber 1a is opened, the transport sheet 2 moves the stacked body, that is, the solar cell module 30, to the transport unit 20b. The conveyance unit 20b conveys the solar cell module 30 received from the conveyance sheet 2 to the next step.

  On the other hand, after the lamination is completed in the laminating apparatus of the comparative example, the filler 7 protruding from the glass substrate 31 of the solar cell module 30 adheres to the transport sheet 2 as shown in FIG. FIG. 7 shows the filler 7 attached to the transport sheet 2 after the solar cell module 30 of FIG. 6 is removed. In the laminating apparatus of the comparative example, as shown in FIG. 10, the transport sheet 2 is transported by the first to fourth transport rollers 13 a to 13 d, and these first to fourth transport rollers 13 a to 13 d are all the same. It has a diameter. As shown in FIG. 7, the filler 7 adhering to the conveyance sheet 2 was scraped off by the scraper 6 when the conveyance sheet 2 was sent as shown in FIG. However, since the filler 7 was heated and melted by the laminate, it was stuck to the transport sheet 2 and could not be removed sufficiently. Therefore, as shown in FIG. 12, the filler 7 adhered to the surface of the glass substrate 31 of the solar cell module 30 to be laminated next. The laminating apparatus of the comparative example is formed in the same manner as the laminating apparatus of the first embodiment shown in FIG. 1 except for the periphery of the conveying sheet 2 of the heating unit 1 and the conveying roller that is the driving means.

  In the first embodiment, as shown in FIG. 1, the laminating apparatus 10 includes a cooling unit 4 that cools the filler 7 of the transport sheet 2, cools the hot filler 7 after lamination in a short time, and is equal to or lower than the melting temperature. To lower. By lowering the temperature to below the melting temperature, the filler 7 adhering to the conveying sheet 2 is cured and easily peeled off from the conveying sheet 2. As shown in FIGS. 2A and 2B, the cooled filler 7 is conveyed and changed in the traveling direction, and the conveyance sheet 2 is conveyed by the third and fourth conveyance rollers 3c and 3d having a small diameter. It reaches the rotating brush 5a in a state where it has been peeled off, and is peeled off by the rotating brush 5a. 3A and 3B, the cooled filler 7 is conveyed because the third and fourth conveying rollers 3c and 3d have a small diameter where the traveling direction of the conveying sheet 2 changes. The state in which the elastic force acts on the sheet 2 and the scraper 6 is peeled off from the conveying sheet 2 and the scraper 6 is scraped off are shown. The laminating apparatus 10 may include both of the rotating brushes 5a and 5b and the scraper 6, or only one of the rotating brushes 5a and 5b and the scraper 6 as long as the effect can be obtained. Further, the numbers of the rotating brushes 5a and 5b and the scraper 6 are not particularly specified as long as the filler 7 can be removed.

  The cooling unit 4 is a part after the solar cell module 30 has been transported to cool the filler 7 of the transport sheet 2 and reaches the third and fourth transport rollers 3c and 3d, which are small-diameter transport rollers. If so, the position is not specified. What is necessary is just to make it the filler 7 become below melting | fusing temperature by the time it reaches the 3rd and 4th conveyance rollers 3c and 3d which have a small diameter. As shown in FIG. 4, the cooling unit 4 is provided with a cooling fan 4 </ b> F that reduces the temperature of the filler 7 by applying cold air 4 W below the melting temperature of the filler 8. At that time, as a method of applying the cold air 4W, the filler 7 is cooled by emitting the cold air 4W by the cooling fan 4F in the entire cooling unit 4. This is because it is difficult to make the temperature of the filler 7 below the melting temperature with cold air 4W from the cooling port at one place or the like. Further, it is desirable that the cooling unit 4 is surrounded by a wall so as not to affect other parts.

  The small diameter conveying rollers, that is, the third and fourth conveying rollers 3c and 3d are desirably as small as possible because the smaller one has the effect of peeling off the filler 7, but the conveying in the heating unit 1 is performed. In the range smaller than the first and second transport rollers 3a and 3b, the level is set to an appropriate level on the configuration of the apparatus. In addition, the range of the diameter is not limited as long as the filler 7 can be peeled off. In this case, since the path of the transport sheet 2 is bent sharply and the elastic force is increased, it can be efficiently peeled off.

  The reason why the third and fourth transport rollers 3c and 3d are easily peeled off by reducing their diameters is as follows. The filler 7 adhering to the conveying sheet 2 of the laminating apparatus 10 is elastically deformed along the outer shapes of the third and fourth conveying rollers 3c and 3d in the conveying roller portion. When the elastic force generated by this deformation exceeds the adhesive force of the filler 7, the bond is released. When the outer diameter of the conveying roller is reduced, deformation is partially concentrated and the elastic force is partially increased, so that the adhesive force is exceeded and the adhesion is released. As described above, the third and fourth transport rollers 3c and 3d have a small diameter, and thus there is an effect of peeling the filler 7 from the transport sheet 2.

  In the first embodiment, the third and fourth transport rollers 3c and 3d are composed of two, and are arranged at symmetrical positions with respect to the first and second transport rollers 3a and 3b. The transport sheet 2 can be transported. However, instead of the third and fourth transport rollers 3c and 3d, one transport roller may be used, or three or more transport rollers may be used. Of these first to fourth transport rollers 3a to 3d, the first transport roller 3a is disposed at the carry-in entrance 10i, but in the vicinity of the carry-in entrance 10i, that is, at a position where the transport sheet 2 can be supplied to the laminating apparatus 10. That's fine. Further, the second transport roller 3b is disposed at the carry-out port 10o, but may be any position as long as the transport sheet 2 can be led out from the carry-out port 10o, that is, the laminating apparatus 10. The third and fourth transport rollers 3c and 3d are arranged on the back side of the first and second transport rollers 3a and 3b at a substantially symmetrical position. Therefore, it should just be arranged so that it can go around to the entrance 10i again.

  In addition, the heater 1H constituting the heating unit 1 is disposed only in the lower chamber 1b, but the upper part that can be independently driven so as to face both the upper surface and the lower surface so that the temperature of the entire laminate is raised. You may make it arrange | position a heater and a lower heater. While monitoring the temperature of the laminated body, the upper heater and the lower heater are driven by the controller in the control panel, and the temperature is controlled so that the ultimate temperature and the heating time for the laminated body meet preset heating conditions. Here, temperature control is performed by turning on and off the heater 1H. The heater uses infrared heating by radiated light such as a halogen heater or a carbon heater. In order to uniformly raise the in-plane temperature of the laminate, the heater 1H is composed of a plurality of upper heaters and lower heaters, respectively, so that the temperature can be controlled independently. May be. Further, in order to uniformly raise the in-plane temperature of the laminate, the heater and the temperature sensor may be divided into a plurality of systems for each size of the laminate to be heated.

  Moreover, in order to lower the temperature of the laminated body after completion of the heating process in a short time and harden the sealing body, an air supply port for air blowing and an air exhaust port for air blowing are provided on the side surface of the heating unit 1, and the outside air is provided by these openings. May be provided to the heating unit 1 to have a forced exhaust function for releasing the hot air that has absorbed the heat to the outside.

  As described above, in the solar cell module manufacturing apparatus of the present embodiment, the solar cell module 30 heated by the heating unit 1 of the laminating apparatus 10 protrudes from the surface of the glass substrate 31 and adheres to the transport sheet 2. The filler 7 is removed. In order to reliably remove the adhering filler 7, the laminating apparatus 10 is provided with a cooling unit 4 that cools the conveying sheet 2 with a cooling fan 4 </ b> F, and the filler 7 is cooled to a melting temperature or lower so as to be easily removed. Of the conveying rollers, the diameters of the third and fourth conveying rollers 3c, 3d on the back side are made as small as possible, and the third and fourth conveying rollers 3c, 3d where the traveling direction of the conveying sheet 2 changes are changed. The filler 7 is peeled off from the conveyance sheet 2. By removing the peeled portions with the rotating brushes 5a and 5b and the scraper 6, the filler 7 can be sufficiently removed. In this way, it is possible to prevent the filler 7 from adhering to the surface of the glass substrate 31 of the solar cell module 30, which is then laminated by the laminating apparatus 10. Can be prevented.

Embodiment 2. FIG.
In the present embodiment, only the configuration of the cooling unit 4 is different, and the other parts are the same as in the first embodiment, and thus the overall view is omitted. FIG. 8 is an enlarged view showing a main part of the cooling unit of the laminating apparatus according to the second embodiment of the present invention. In the first embodiment, the cooling unit 4 is configured to cure the adhering filler 7 by blowing the cool air 4W onto the conveying sheet 2 with the cooling fan 4F. However, in the cooling unit 4 of the present embodiment, the thermoelectric element is used. The built-in cooling plate 4 </ b> B is configured to abut against the conveyance sheet 2. The cooling plate 4B abuts on the conveyance sheet 2 and cools the conveyance sheet 2 to lower the filler 7 adhering to the conveyance sheet 2 to a melting temperature or lower. By lowering the temperature to below the melting temperature, the filler 7 adhering to the conveying sheet 2 is hardened and easily peeled off from the conveying sheet 2.

  Then, as described in the first embodiment, as shown in FIG. 2A, the cooled filler 7 is peeled from the transport sheet 2 by the third transport roller 3c. Thereafter, as shown in FIG. 2 (b), the brush reaches the rotating brushes 5a and 5b and is cut off by the rotating brushes 5a and 5b. FIGS. 3A and 3B show a state in which the cooled filler 7 comes to the scraper 6 while being peeled off from the conveying sheet 2 by the third conveying roller 3c and is scraped off by the scraper 6. FIG.

  As described above, according to the present embodiment, by providing the cooling plate 4B in the cooling unit 4, the filler 7 attached to the transport sheet 2 can be effectively lowered to the melting temperature or lower and the filler 7 can be hardened. In addition, the filler 7 can be effectively peeled off from the conveyance sheet 2 with a small-diameter conveyance roller (third conveyance roller 3c), and the filler 7 can be sufficiently removed from the conveyance sheet 2 with the rotating brushes 5a and 5b, the scraper 6, and the like. Therefore, the appearance defect of the solar cell module 30 can be prevented by preventing the filler 7 from adhering to the surface of the glass base number 31 of the solar cell module 30.

  In the cooling unit 4 of the second embodiment, the cooling plate 4B is configured with a built-in thermoelectric element. If the filler 7 can be lowered to the melting temperature or lower, its size, number, configuration, cooling The cooling method for the plate 4B is not particularly specified. In addition, for example, as a cooling method of the cooling plate 4B, circulating cooling water generally used in a factory may be used. Circulating cooling water is a utility facility used for cooling equipment installed in the factory. The circulating water cooled on the power equipment side is supplied to the equipment, and the equipment is cooled by exchanging heat with the equipment. is there. Further, a circulating cooling device may be attached to the thermoelectric element, and the high temperature portion side of the thermoelectric element may be cooled with the circulating cooling water.

Embodiment 3 FIG.
In the present embodiment, only the configuration of the cooling unit 4 is different, and the others are the same as those in the first and second embodiments, and thus the overall view is omitted. A method for manufacturing a solar cell module according to Embodiment 3 of the present invention will be described with reference to FIGS. 9 (a) and 9 (b). In this embodiment, the third conveying roller is constituted by a cooling roller 3cc, and when the conveying sheet 2 passes the cooling roller 3cc, it is cooled and cured. The cooling roller 3cc has a built-in thermoelectric element so that the surface is cooled.

  The description of the same symbols as those in the first and second embodiments in the figure is omitted. FIGS. 9A and 9B are schematic cross-sectional views of a portion where a cooling roller 3cc, which is a cooling portion of the present embodiment, is viewed from the side. The cooling roller 3cc is a small-diameter conveying roller having a cooling function. When the conveyance sheet 2 passes, the small-diameter conveyance roller having a cooling function instantaneously cools the filler 7 adhering to the conveyance sheet 2 to the melting temperature or less and passes through the small-diameter conveyance roller having the cooling function. The filler 7 is peeled off from the conveyance sheet 2.

  Although the cooling roller 3cc of the third embodiment has a built-in thermoelectric element, the cooling method for the cooling roller 3cc is not particularly specified as long as the filler 7 can be lowered to the melting temperature or lower. In addition, for example, the cooling roller 3cc may be cooled by flowing circulating cooling water inside the cooling roller 3cc. Further, a circulating cooling device may be attached to the thermoelectric element, and the high temperature portion side of the thermoelectric element may be cooled with the circulating cooling water.

  As described above, the cooling roller 3cc is used as the small-diameter conveying roller, and the cooling function is provided, so that the filler 7 attached to the conveying sheet 2 can be effectively lowered below the melting temperature and the filler 7 is solidified. Can do. For this reason, it is not necessary to provide a separate cooling unit, and an elastic force is applied while cooling with the cooling roller 3 cc to effectively peel off the filler 7 from the conveying sheet 2, and the rotating brush 5 a, 5 b and scraper 6 remove the filler 7 The filler 7 can be removed sufficiently. Therefore, the appearance defect of the solar cell module 30 can be prevented by preventing the filler 7 from adhering to the surface of the glass substrate 31 of the solar cell module 30.

  DESCRIPTION OF SYMBOLS 1 Heating part, 2 conveyance sheet, 3a 1st conveyance roller, 3b 2nd conveyance roller, 3c 3rd conveyance roller, 3d 4th conveyance roller, 3cc cooling roller, 4 cooling part, 4F cooling fan, 4W cold wind 4B Cooling plate, 5, 5a, 5b Rotating brush, 6 Scraper, 7 Filling material, 10 Laminating device, 10i carry-in port, 10o carry-out port, 20a, 20b Carrying part, 30 Solar cell module, 31 Glass Substrate, 32 solar cells, 33 tab wire, 34a, 34b filler, 35 cover sheet.

Claims (10)

It is a solar cell module manufacturing apparatus that laminates a substrate, solar cells, filler, heat cures and performs resin sealing,
A transport unit for placing and transporting the substrate;
On the substrate transported from the transport unit, the solar battery cell, the filler is stacked, a stacked unit that forms a stacked body,
A laminating apparatus for forming a solar cell module by heating and pressurizing the laminate conveyed by the conveying unit;
The laminating apparatus is
A heating section for heating and pressurizing the laminate;
The stacked body transported to the entrance of the laminating apparatus by the transporting section is placed, transported to the heating section, and a solar cell module obtained by completing the laminating process is mounted on the laminating apparatus. A transport sheet to be transported to the transport unit at a transport exit;
A transport roller that transports the transported sheet after unloading at the back of the heating unit and returns the transport sheet;
A cooling unit that is located between the carry-out port and the carry-in port and cools the filler adhering to the carrying sheet;
The solar battery module, wherein the conveyance roller has a smaller diameter than the conveyance roller at the carry-out port at a portion where the traveling direction of the conveyance sheet is changed between the cooling unit and the carry-in port. manufacturing device. The transport roller is
A first conveying roller disposed at the carry-in port;
A second transport roller disposed at the carry-out port;
A third and a fourth transport roller arranged at symmetrical positions on the back side with respect to the first and second transport rollers;
The transport sheet is circulated by the first to fourth transport rollers,
The solar cell module manufacturing apparatus according to claim 1, wherein the third and fourth transport rollers are formed to have a smaller diameter than the first and second transport rollers.   The solar cell module manufacturing apparatus according to claim 1, wherein the cooling unit includes a cold air device.   The solar cell module manufacturing apparatus according to claim 1, wherein the cooling unit includes a cooling plate that comes into contact with the transport sheet.   The solar cell module manufacturing apparatus according to claim 2, wherein the third transport roller has a cooling function. A method for manufacturing a solar cell module in which a substrate, a solar battery cell, and a filler are laminated, heat-cured and resin-sealed,
A stacking step of stacking the solar battery cells and the filler on the substrate placed on the transport unit to form a stack;
A laminate step of forming a solar cell module by heating and pressurizing the laminate conveyed by the conveyance unit with a heating unit;
The laminating step
At the carry-in entrance, the laminate is placed on the carry sheet from the carrying section, heated and pressurized, laminated, and the resulting solar cell module is carried out to the carrying section at the carry-out opening; ,
A cooling unit positioned between the carry-out port and the carry-in port to cool the filler adhering to the carry sheet;
A stripping step in which the transport sheet is sharply bent with a transport roller having a smaller diameter than the transport roller at the transport exit, and the filler is stripped;
The method for manufacturing a solar cell module, wherein the transport sheet from which the filler has been peeled is returned to the transport entrance. The transport roller is
A first conveying roller disposed at the carry-in port;
A second transport roller disposed at the carry-out port;
A third and a fourth transport roller arranged at symmetrical positions on the back side with respect to the first and second transport rollers;
The transport sheet is circulated by the first to fourth transport rollers,
The method for manufacturing a solar cell module according to claim 6, wherein the third or fourth transport roller is formed to have a smaller diameter than the first and second transport rollers.   The method for manufacturing a solar cell module according to claim 6 or 7, wherein the conveyance sheet cooling step is a step of supplying cold air to the conveyance sheet.   The method for manufacturing a solar cell module according to claim 6 or 7, wherein the transport sheet cooling step is a step of bringing the transport sheet into contact with a cooling plate. The third transport roller has a cooling function;
The method for manufacturing a solar cell module according to claim 7, wherein the transport sheet cooling step includes a step of peeling the filler while cooling.

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