WO2012128341A1 - Module de cellules solaires et son procédé de fabrication - Google Patents

Module de cellules solaires et son procédé de fabrication Download PDF

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Publication number
WO2012128341A1
WO2012128341A1 PCT/JP2012/057448 JP2012057448W WO2012128341A1 WO 2012128341 A1 WO2012128341 A1 WO 2012128341A1 JP 2012057448 W JP2012057448 W JP 2012057448W WO 2012128341 A1 WO2012128341 A1 WO 2012128341A1
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WO
WIPO (PCT)
Prior art keywords
solar cell
protection member
surface protection
cell module
back surface
Prior art date
Application number
PCT/JP2012/057448
Other languages
English (en)
Japanese (ja)
Inventor
遠藤　修
Original Assignee
三洋電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2011066598A external-priority patent/JP2012204533A/ja
Priority claimed from JP2011066602A external-priority patent/JP2012204536A/ja
Priority claimed from JP2011066600A external-priority patent/JP2012204535A/ja
Priority claimed from JP2011066599A external-priority patent/JP2012204534A/ja
Application filed by 三洋電機株式会社 filed Critical 三洋電機株式会社
Publication of WO2012128341A1 publication Critical patent/WO2012128341A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/30—Electrical components
    • H02S40/34—Electrical components comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/048—Encapsulation of modules
    • H01L31/0488—Double glass encapsulation, e.g. photovoltaic cells arranged between front and rear glass sheets
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

Definitions

  • the present invention relates to a solar cell module and a manufacturing method thereof.
  • Solar cells are expected as a new energy source because they can directly convert clean and infinitely supplied sunlight into electricity.
  • the output per solar cell is about several watts.
  • a solar cell module whose output is increased by connecting a plurality of solar cells is used.
  • the solar cell module has a structure in which a plurality of solar cells are connected in series or in parallel by a wiring member electrically connected to the front and back electrodes.
  • a plurality of solar cells connected by wiring members are disposed between a surface protective member and a back surface protective member made of a translucent member, and an ethylene / vinyl acetate copolymer (EVA) is provided. ) Etc. as a main component.
  • the above-described solar cell module often has a terminal box for taking out the output of the solar cell on the back side.
  • a terminal box for taking out the output of the solar cell on the back side.
  • an opening is provided in the back surface protection member in order to extract the output of the solar cell to the back surface side, and output wiring is extracted from this opening.
  • the terminal box is provided with a terminal portion connected to an output cable that outputs power to the outside.
  • the output wiring taken out from the solar cell module is connected to this terminal portion by soldering.
  • This invention aims at providing the manufacturing method which can manufacture a solar cell module with the improved yield also when a glass plate is used for a back surface protection member.
  • a solar cell having a wiring in which a plurality of solar cells are sealed with a sealing material between a translucent surface protection member and a back surface protection member and is taken out through an opening provided in the back surface protection member.
  • a battery module comprising a resin sheet disposed between a back surface protection member including the opening and the wiring, and two or more stress relaxation resin sheets disposed at a predetermined distance from the resin sheet. And having.
  • the present invention provides a wiring in which a plurality of solar cells are sealed with a sealing material between a translucent surface protection member and a back surface protection member, and are taken out through openings provided in the back surface protection member.
  • a solar cell module in which the wiring is connected to the terminal portion on the back surface protection member, and a heat insulating material having a lower thermal conductivity than the sealing material is disposed between the wiring and the back surface protection member.
  • the present invention also includes a wiring in which a plurality of solar cells are sealed with a sealing material between the translucent surface protection member and the back surface protection member, and are taken out through openings provided in the back surface protection member. And it is a manufacturing method of the solar cell module which connects this wiring to a terminal part on the said back surface protection member, Comprising: The said wiring is connected to the said terminal part in the state which preheated the outer surface of the said back surface protection member.
  • the present invention also includes a wiring in which a plurality of solar cells are sealed with a sealing material between the translucent surface protection member and the back surface protection member, and are taken out through openings provided in the back surface protection member.
  • the present invention by dispersing and arranging the resin sheets, stress is received in a wide area, and cracking of the back surface protection member due to stress concentration can be prevented. Moreover, since the opening part of a back surface protection member is covered with the resin sheet, the permeation
  • the present invention provides a heat insulating material between the wiring and the back surface protection member, even if the wiring is heated and heat is transmitted to the inside of the solar cell module by arranging a heat insulating material having a lower thermal conductivity than the sealing material. Therefore, it is possible to suppress the heat from being transmitted to the back glass 13, the temperature difference between the inner side and the outer side is relaxed, and the occurrence of cracks and the like of the back glass 13 due to thermal strain can be prevented.
  • the present invention preheats the outer surface of the back surface protection member, so that the outer surface is preheated even when heat is transmitted through the output wiring and the inside of the solar cell module becomes hot during soldering.
  • the temperature difference between the outside and the outside is relaxed, and the occurrence of cracks or the like of the back surface protection member due to thermal strain can be prevented.
  • the present invention provides a solar cell by cooling part or all of the wiring located between the opening of the back surface protection member and the terminal portion, even if the wiring in the area to be soldered is heated during soldering. Heat can be prevented from being transmitted to the inside of the module, the temperature difference between the inner side and the outer side can be reduced, and the occurrence of cracks and the like of the back surface protection member due to thermal strain can be prevented.
  • the solar cell module of 1st Embodiment it is a typical top view which shows the area
  • the solar cell module 10 includes a solar cell 11, a surface protection member 12, a back glass 13 and a sealing member 14 as a back surface protection member.
  • the solar cell module 10 is configured by sealing a plurality of solar cells 11 between the surface protection member 12 and the back glass 13.
  • the plurality of solar cells 11 are electrically connected to each other by the wiring member 16.
  • the solar cell 11 and the wiring member 16 are connected using solder or a resin adhesive.
  • the plurality of solar cells 11 arranged in one direction and electrically connected by the wiring member 16 constitutes a string which is one unit unit. These strings are connected by a crossover wiring 21. A part of the crossover wiring 21 is connected to the output wiring 20 for outputting electricity to the outside.
  • the solar cell 11 is made of, for example, a crystalline semiconductor composed of single crystal silicon or polycrystalline silicon having a thickness of about 0.15 mm, and has a substantially square shape with one side of 125 mm, but is not limited thereto. Other solar cells may be used.
  • This solar cell 11 has, for example, an n-type region and a p-type region, and a junction portion in which an electric field capable of separating generated carriers is formed at an interface portion between the n-type region and the p-type region. Has been.
  • the wiring member 16 is connected to an electrode of the solar cell 11 and an electrode of another solar cell 11 adjacent to the solar cell 11. Thereby, the adjacent solar cells 11 and 11 are electrically connected.
  • the wiring member 16 includes a thin plate-like copper foil and solder plated on the surface of the copper foil.
  • the solar cell 11 and the wiring member 16 When connecting the wiring member 16 and the solar cell 11 with solder, the solder plated on the surface of the wiring member 16 is melted and connected to the electrode of the solar cell 11.
  • the solar cell 11 and the wiring member 16 can be connected using a resin adhesive in addition to the connection using solder.
  • a resin adhesive a resin adhesive having anisotropic conductivity is preferably used.
  • the surface protection member 12 is disposed on the light receiving surface side of the sealing member 14 and protects the surface of the solar cell module 10.
  • the surface protection member 12 is tempered glass having translucency, and the plate thickness is about 3.0 mm to 3.2 mm.
  • the surface protection member 12 is not limited to tempered glass, and translucent plastic or the like can be used.
  • the back glass 13 is disposed on the back side of the sealing member 14 and protects the back surface of the solar cell module 10.
  • the back glass 13 is an unstrengthened glass plate having a thickness of 1.0 mm or more and 4.0 mm or less, and can improve the weather resistance of the solar cell module 10.
  • the back glass 13 may be translucent or non-translucent. Further, the back glass 13 may be tempered glass. In this case, the thickness of the back glass 13 can be further reduced.
  • a terminal box 40 is attached to the surface of the back glass 13. In the following embodiments, unstrengthened plate glass having a thickness of 2.0 mm is used.
  • the sealing member 14 seals the solar cell 11 between the surface protection member 12 and the back glass 13.
  • the sealing member 14 disposed between the surface protection member 12 and the solar cell 11 has translucency.
  • the sealing member 14 is selected from ethylene / vinyl acetate copolymer resin (EVA), polyolefin, cyclic polyethylene, ionomer, polyacrylic acid polymer, or a copolymer obtained by polymerizing a plurality of these. In this embodiment, EVA resin is used.
  • the wiring member 16 is connected to the output wiring 20 for taking out the output to the outside of the solar cell module directly or via the transition wiring 21.
  • the output wiring 20 is drawn out of the solar cell module 10 from an opening 13 a provided in the back glass 13.
  • the resin sheet 14 1 is a resin sheet which prevents moisture penetration, in the embodiment, the adhesive layer such as EVA resin is provided on the surface of PET (Polyethylene Terephthalate). Further, in the first embodiment, as shown in FIGS. 5 and 6, the same area as the resin sheet 14 1, the stress relaxing resin sheet 14 2 of the same thickness, 14 3 and the resin sheet 14 1 is given Arranged at a distance.
  • Al (aluminum) frame (not shown) can be attached to the outer periphery of the solar cell module 10 having the above-described configuration.
  • the wiring member 16 is connected to the output wiring 20 for taking out the output to the outside of the solar cell module directly or via the transition wiring 21.
  • the output wiring 20 takes out the electrical output from the solar cell 11 to the outside, and is connected to the terminal 40 b in the terminal box 40.
  • the output wiring 20 is a copper foil having a thickness of about 0.1 mm to 0.3 mm and a width of 6 mm, and the entire surface thereof is solder-coated.
  • the output wiring 20 is cut to a predetermined length and soldered to the wiring member 16 or the transition wiring 21. It is attached.
  • the surface of the output wiring 20 is covered with an insulating member 20a such as an insulating film.
  • the back glass 13 is provided with an opening 13 a for taking out the output wiring 20. Further, as will be described later, the sheet member 14b constituting the sealing member 14 on the back side is also provided with a slit 14h for taking out the output wiring 20.
  • the terminal box 40 is attached to the back glass 13 with an adhesive 50 such as a silicone resin so as to cover the opening 13 a of the back glass 13.
  • the output wiring 20 taken out from the opening 13 a is guided into the terminal box 40 from the opening 40 h in the bottom 40 a of the terminal box 40.
  • the output wiring 20 is connected with the terminal part 40b in the terminal box 40, and is connected with an external output cable (not shown).
  • the output wiring 20 connected to the crossover wiring 21 of the leftmost string is drawn out from the opening 13 a of the back glass 13.
  • the second and third strings from the left are connected by the crossover wiring 21, and the output wiring 20 connected to the crossover wiring 21 is drawn out from the opening 13 a of the back glass 13.
  • the output wiring 20 connected to the rightmost string transition wiring 21 is drawn out from the opening 13 a of the back glass 13.
  • the second and third strings from the right are connected by the crossover wiring 21, and the output line 20 connected to the crossover wiring 21 is drawn out from the opening 13 a of the back glass 13.
  • the solar cell module is comprised by soldering and connecting to the predetermined terminal board (not shown) of the terminal part 40b of the terminal box 40 by the method mentioned later.
  • the terminal portion 40b of the terminal box 40 is provided with four terminal boards (not shown), and the corresponding output wirings 20 are connected by soldering.
  • a backflow prevention diode (not shown) is connected between the plurality of terminal plates of the terminal box 40.
  • the slit 14 h of the sealing member 14 b and the slit 14 1 h of the resin sheet 14 1 have a width slightly wider than the thickness of the output wiring 20, and have a length into which the plurality of output wirings 20 are inserted.
  • the interval and length thereof can be defined.
  • the slit 14 1 h is almost closed after lamination so that almost no moisture permeates from the slit 14 1 h of the resin sheet 14 1 .
  • the members arranged in this way are laminated by a laminating apparatus.
  • the three resin sheets 14 1 , 14 2 , and 14 3 are installed on the sealing member 14b disposed on the back glass 13 side while maintaining a predetermined distance.
  • the resin sheet 14 1 closes the opening portion 13a provided on the back surface of glass 13 is arranged so as to cover the output wires 20 drawn out from the slit 14h of the sealing member 14b.
  • the output wiring 20 is drawn out from the slit 14 1 h of the resin sheet 14 1 .
  • the resin sheet 14 1 is a rectangular 130 mm ⁇ 150 mm, a thickness of the PET sheet of 0.2 mm.
  • the resin sheet 14 1, the distance is 30mm position between one end portion and one end portion of the resin sheet 14 1 in the rear surface glass 13 is arranged so as to cover the opening 13a of the back glass 13. Note that both surfaces of this sheet are covered with an adhesive layer such as EVA resin.
  • the slits 14 1 h of the resin sheet 14 1 are arranged so as to be located at the center of the opening 13 a of the back glass 13.
  • each of these resin sheets 14 2 and 14 3 is 150 mm with respect to the resin sheet 14 1 , in a direction away from one end portion of the back glass 13 to the other end side (downward direction in the figure), and 45 mm toward the side surface side. They are arranged at separate positions.
  • the resin sheets 14 2 and 14 3 may have the same thickness as the resin sheet 14 1, and may have the same structure as the resin sheet 14 1 or an EVA resin sheet. Given the stress relaxation, of the same structure as the resin sheet 14 is preferably 1. However, the same stress relaxation effect can be obtained if the EVA resin itself has the same thickness.
  • the simple area of these resin sheets 14 1 , 14 2 , and 14 3 is 585 cm 2 , but the area where the stress is evenly applied to the back glass 13 when pressed from the back glass 13 side is indicated by hatching in FIG. Region S.
  • the area of this region S is 1668 cm 2 .
  • the first embodiment by using a plurality of resin sheets having a small area, it is possible to reduce the stress by reducing the material of the resin sheet, and the sun using unreinforced sheet glass as the back glass 13.
  • a battery module can be obtained without cracks.
  • the opening 13a portion of the back glass 13, are covered with the resin sheet 14 1 can also be prevented penetration of water from the opening 13a portion.
  • thick tempered glass when thick tempered glass is used for the back glass 13, it can prevent that a glass generate
  • the concentrated stress is applied to the solar cell 11 side, and the solar cell 11 may be damaged. Even in such a case, by arranging the stress relaxation resin sheet, the stress concentration is relaxed, and the stress concentration on the solar cell 11 can be suppressed.
  • the bottom 40a of the terminal box 40 is bonded with an adhesive 50 or the like so as to close the opening 13a of the back glass 13. Then, the output wiring 20 is soldered to a predetermined terminal plate of the terminal portion 40b in the terminal box 40. And although not shown in figure, the solar cell module 10 is comprised by attaching the case upper cover of the terminal box 40 to the bottom part 40a.
  • the manufacturing apparatus for manufacturing the solar cell module 10 includes a lower housing 200 and an upper housing 202 that is airtightly coupled to the lower housing.
  • a heater plate 201 is disposed in the upper opening of the lower housing 200 in a substantially flush state.
  • the upper housing 202 is provided with a rubber diaphragm 203 on the side facing the opening of the lower housing 200.
  • a packing 204 for holding an airtight state when the two are joined is attached to the peripheral portions of the lower housing 200 and the upper housing 202 over the entire circumference.
  • a vacuum pump (not shown) is connected to the lower housing 200.
  • the solar cell module 10 In manufacturing the solar cell module 10, first, a plurality of solar cells connected to the heater plate 201 of the manufacturing apparatus from the lower side by the surface protection member 12, the surface side sealing member 14 a, and the wiring member 16. 11.
  • the back side sealing member 14b, the resin sheet 14 1 , the resin sheet 14 1, and the stress relaxation resin sheets 14 2 and 14 3 and the back glass 13 arranged in a predetermined distance are stacked in this order.
  • the output wiring 20 passes through the slit 14 h of the EVA resin sheet 14 b and the slit 14 1 h of the resin sheet 14 1 , is pulled out from the opening 13 a of the back glass 13, is positioned at a predetermined position, and is temporarily held.
  • the lower housing 200 and the upper housing 202 are joined. Thereafter, the lower housing 200 is evacuated by a vacuum pump (not shown). At this time, the heater plate 201 is heated to about 130 ° C. to 200 ° C. In this state, the diaphragm 203 is pressed against the solar cell module 10 placed on the heater plate 201 with a pressure of about 0.1 MPa. And sealing member 14a, 14b gelatinizes, and the sealing member 14 used as a predetermined EVA layer is comprised.
  • the solar cell 11 is sealed in the sealing member 14 in a state of being sandwiched between the front surface side protection member 12 and the rear surface side glass 13.
  • a region where the back glass 13 is evenly stressed is a region S indicated by hatching in FIG.
  • the area of this region S is 1668 cm 2 .
  • the solar cell 11 is sealed with the sealing member 14 between the surface protection member 12 and the back glass 13 as shown in FIG. Opening 13a of the back glass 13, are covered with the resin sheet 14 1 can also be prevented penetration of water from the opening 13a portion.
  • the output wiring 20 drawn from the opening 13a of the back glass 13 is inserted into the opening 40h provided in the bottom 40a of the terminal box 40.
  • the bottom part 40a of the terminal box 40 is attached to the back glass 13 with the adhesive agent 50 which consists of silicone resins so that the opening part 13a of the back glass 13 may be obstruct
  • the output wiring 20 is connected to a predetermined terminal plate of the terminal portion 40b in the terminal box 40 using a soldering iron.
  • the case upper lid (not shown) of the terminal box 40 is attached to the bottom portion 40a to constitute the solar cell module 10.
  • the area is smaller than the sealing member 14b and larger than the size capable of relieving local stress.
  • a single resin sheet 140 may be disposed at the position of the opening 13 a of the back glass 13. If it has the same configuration as that of the first embodiment, a 1668 cm 2 trapezoidal resin sheet 140 may be used.
  • 14 1 , 14 2 , and 14 3 indicated by broken lines are area portions corresponding to the resin sheet of the above-described embodiment.
  • the resin sheet 140 is also preferably provided with an adhesive layer such as EVA on both sides of the PET sheet.
  • the second embodiment requires more material than the first embodiment described above, but has the advantage of facilitating the positioning operation.
  • a PET sheet is used, but only an EVA resin sheet may be used.
  • an EVA resin sheet the effect of preventing moisture permeation from the PET sheet is reduced, but the output wiring 20 can be reliably adhered to the back glass 13 and the output wiring 20 is firmly held. It will be.
  • the solar cell module 10 includes a solar cell 11, a surface protection member 12, a back glass 13 as a back surface protection member, and a sealing member 14.
  • the solar cell module 10 is configured by sealing a plurality of solar cells 11 between the surface protection member 12 and the back glass 13.
  • the plurality of solar cells 11 are electrically connected to each other by the wiring member 16.
  • the solar cell 11 and the wiring member 16 are connected using solder or a resin adhesive.
  • the plurality of solar cells 11 arranged in one direction and electrically connected by the wiring member 16 constitutes a string which is one unit unit. These strings are connected by a crossover wiring 21. A part of the crossover wiring 21 is connected to the output wiring 20 for outputting electricity to the outside.
  • the wiring member 16 described above is connected to the output wiring 20 for taking out the output to the outside of the solar cell module directly or via the transition wiring 21
  • the surface protection member 12 is a tempered glass having translucency, and the thickness thereof is about 3.0 mm to 3.2 mm.
  • the surface protection member 12 is not limited to tempered glass, and translucent plastic or the like can be used.
  • the back glass 13 is disposed on the back side of the solar cell 11 and protects the back surface of the solar cell module 10. Also in the third embodiment, a glass plate having a thickness of 1.0 mm or more and 4.0 mm or less is used for the back glass 13, and the weather resistance of the solar cell module 10 can be improved.
  • the back glass 13 may be translucent or non-translucent.
  • a terminal box 40 is attached to the surface of the back glass 13.
  • the sealing member 14 seals the solar cell 11 between the surface protection member 12 and the back glass 13.
  • the sealing member 14 disposed between the surface protection member 12 and the solar cell 11 has translucency.
  • a sheet-like heat insulating material 30 having a thermal conductivity smaller than that of the sealing member 14 is disposed between the output wiring 20 and the back glass 13.
  • the thermal conductivity of many resins including EVA is about 0.1 W / m ⁇ K to 0.3 W / m ⁇ K.
  • the heat insulating material 30 may be any material that is smaller than the thermal conductivity of the EVA resin and does not adversely affect the solar cell 11.
  • a material such as glass wool, polystyrene, or urethane can be used.
  • the thickness of the heat insulating material 30 can be made thin, so that heat conductivity is small, it can prevent that a pressure concentrates on the location with the heat insulating material 30 at the time of lamination. As a result, the occurrence of cracks in the back glass 13 during lamination can be suppressed.
  • Al (aluminum) frame (not shown) can be attached to the outer periphery of the solar cell module 10 having the above-described configuration.
  • the wiring member 16 is connected to the output wiring 20 for taking out the output to the outside of the solar cell module directly or via the transition wiring 21.
  • the output wiring 20 takes out the electrical output from the solar cell 11 to the outside, and is connected to the terminal in the terminal box 40.
  • the surface of the output wiring 20 is covered with an insulating member 20a such as an insulating film.
  • the back glass 13 is provided with an opening 13a for taking out the output wiring 20. Further, as will be described later, the sheet member constituting the sealing member 14 on the back side is provided with a slit 14h for taking out the output wiring 20.
  • the terminal box 40 is attached with an adhesive 50 such as silicone resin so as to cover the opening 13a of the back glass 13.
  • the output wiring 20 taken out from the opening 13a is connected to a predetermined terminal plate (not shown) of the terminal portion 40b in the terminal box 40, and is connected to an external output cable (not shown).
  • the crossover wires 21 As shown in FIG. 3, in this embodiment, six strings are connected in series using the crossover wires 21.
  • the output wiring 20 connected to the crossover wiring 21 of the leftmost string is drawn out from the opening 13 a of the back glass 13.
  • the second and third strings from the left are connected by the crossover wiring 21, and the output wiring 20 connected to the crossover wiring 21 is drawn out from the opening 13 a of the back glass 13.
  • the output wiring 20 connected to the rightmost string transition wiring 21 is drawn out from the slit 13 a of the back glass 13.
  • the second and third strings from the right are connected by the crossover wiring 21, and the output line 20 connected to the crossover wiring 21 is drawn out from the opening 13 a of the back glass 13.
  • the four output wirings 20 are drawn from the six strings from the opening 13a of the back glass 13. And it connects to the predetermined terminal board of the terminal part 40b of the terminal box 40 by soldering, and the solar cell module is comprised.
  • a heat insulating material 30 having a thermal conductivity smaller than that of the sealing member 14 is disposed between the output wiring 20 and the back glass 13. For this reason, at the time of soldering, even if the output wiring 20 is heated and heat is transmitted to the inside of the solar cell module, it is possible to suppress the heat from being transmitted to the back glass 13 by the heat insulating material 30. The temperature difference between them is relaxed, and the occurrence of cracks or the like of the back glass 13 due to thermal strain can be prevented.
  • the terminal portion 40b of the terminal box 40 is provided with four terminal plates (not shown), and the corresponding output terminals 20 are connected by solder.
  • a backflow prevention diode (not shown) is connected between the terminals of the terminal box 40.
  • the solar cell module 10 in manufacturing the solar cell module 10, a plurality of solar cells 11 connected by a surface protection member 12, a sealing member 14 a, and a wiring member 16 from the lower side, and a sealing member 14 b on the back side.
  • the sheet-like heat insulating material 30 and the back glass 13 disposed between the output wiring 20 and the back glass 23 are stacked in this order.
  • the output wiring 20 passes through the slit 14h of the sealing member 14b and is drawn from the opening 13a of the back glass 13.
  • the members arranged in this way are laminated by a laminating apparatus.
  • the heat insulating material 30 has EVA laminated on one side or both sides in order to ensure adhesion to the back glass 13.
  • the bottom 40a of the terminal box 40 is bonded with an adhesive 50 or the like so as to close the opening 13a of the back glass 13. Then, the output wiring 20 is soldered to a predetermined terminal plate of the terminal portion 40b in the terminal box 40. And although not shown in figure, the solar cell module 10 is comprised by attaching the case upper cover of the terminal box 40 to the bottom part 40a.
  • the manufacturing apparatus for manufacturing the solar cell module 10 includes a lower housing 200 and an upper housing 202 that is airtightly coupled to the lower housing.
  • a heater plate 201 is disposed in the upper opening of the lower housing 200 in a substantially flush state.
  • the upper housing 202 is provided with a rubber diaphragm 203 on the side facing the opening of the lower housing 200.
  • a packing 204 for holding an airtight state when the two are joined is attached to the peripheral portions of the lower housing 200 and the upper housing 202 over the entire circumference.
  • a vacuum pump (not shown) is connected to the lower housing 200.
  • the solar cell module 10 In manufacturing the solar cell module 10, first, a plurality of solar cells connected to the heater plate 201 of the manufacturing apparatus from the lower side by the surface protection member 12, the surface side sealing member 14 a, and the wiring member 16. 11, the back-side sealing member 14b, the sheet-like heat insulating material 30 and the back glass 13 disposed between the output wiring 20 and the back glass 23 are stacked in this order.
  • the output wiring 20 is inserted into the opening 13a of the back glass 13, and the output wiring 20 is positioned at a predetermined position and temporarily held.
  • the lower housing 200 and the upper housing 202 are joined. Thereafter, the lower housing 200 is evacuated by a vacuum pump (not shown). At this time, the heater plate 201 is heated to about 130 ° C. to 200 ° C. In this state, the diaphragm 203 is pressed against the solar cell module 10 placed on the heater plate 201 with a pressure of about 0.1 MPa. And sealing member 14a, 14b gelatinizes, and the sealing member 14 used as a predetermined EVA layer is comprised. Thereby, the solar cell 11 is sealed in the sealing member 14 in a state of being sandwiched between the front surface side protection member 12 and the rear surface side glass 13. Further, a sheet-like heat insulating material 30 having a lower thermal conductivity than the sealing member 14 is disposed between the output wiring 20 and the back glass 13.
  • the output wiring 20 drawn from the opening 13a of the back glass 13 is inserted into the opening 40h provided in the bottom 40a of the terminal box 40, and the opening 13a of the back glass 13 is closed, so that the terminal box
  • the bottom 40a of 40 is attached to the back glass 13 with an adhesive 50 made of silicone resin.
  • the output wiring 20 is connected to a predetermined terminal plate of the terminal portion 40 b in the terminal box 40 using a soldering iron 60.
  • soldering iron 60 heat from the soldering iron 60 is transmitted through the output wiring 20 and from the back glass 13 to the inside of the solar cell module 10. Heat is suppressed from being transmitted to the inner surface 13 b of the back glass 13 by the heat insulating material 30 disposed between the output wiring 20 and the back glass 13. Soldering is performed by heating the temperature of the soldering iron 60 to about 250 ° C.
  • heat transmitted to the output wiring 20 is soldered to the inner surface 13b of the back glass 13 during soldering by the heat insulating material 30 disposed between the output wiring 20 and the back glass 13. Transmission is suppressed. As a result, the temperature difference between the inner surface 13b and the outer surface 13f of the back glass 13 is relaxed, and the occurrence of cracks and the like of the back glass 13 due to thermal strain can be prevented.
  • the case upper lid (not shown) of the terminal box 40 is attached to the bottom portion 40a to constitute the solar cell module 10.
  • the solar cell module 10 includes a solar cell 11, a surface protection member 12, a back glass 13 as a back surface protection member, and a sealing member 14, as in the first embodiment.
  • the solar cell module 10 is configured by sealing a plurality of solar cells 11 between the surface protection member 12 and the back glass 13.
  • the plurality of solar cells 11 are electrically connected to each other by the wiring member 16.
  • the solar cell 11 and the wiring member 16 are connected using solder or a resin adhesive.
  • the plurality of solar cells 11 arranged in one direction and electrically connected by the wiring member 16 constitutes a string which is one unit unit. These strings are connected by a crossover wiring 21. A part of the crossover wiring 21 is connected to the output wiring 20 for outputting electricity to the outside.
  • the wiring member 16 is connected to an electrode of the solar cell 11 and an electrode of another solar cell 11 adjacent to the solar cell 11. Thereby, the adjacent solar cells 11 and 11 are electrically connected.
  • the surface protection member 12 is disposed on the light receiving surface side of the solar cell 11 and protects the surface of the solar cell module 10. Also in the fourth embodiment, the surface protection member 12 is tempered glass having translucency, and the thickness thereof is about 3.0 mm to 3.2 mm. The surface protection member 12 is not limited to tempered glass, and translucent plastic or the like can be used.
  • the back glass 13 is disposed on the back side of the solar cell 11 and protects the back surface of the solar cell module 10. Also in 4th Embodiment, the glass plate of plate
  • the back glass 13 may be translucent or non-translucent.
  • a terminal box 40 is attached to the surface of the back glass 13.
  • the sealing member 14 seals the solar cell 11 between the surface protection member 12 and the back glass 13.
  • the sealing member 14 disposed between the surface protection member 12 and the solar cell 11 has translucency.
  • an Al (aluminum) frame (not shown) can be attached to the outer periphery of the solar cell module 10 having the above configuration.
  • the wiring member 16 is connected to the output wiring 20 that extracts the output to the outside of the solar cell module, directly or via the transition wiring 21.
  • the output wiring 20 takes out the electrical output from the solar cell 11 to the outside, and is connected to a predetermined terminal plate (not shown) of the terminal portion 40 b in the terminal box 40.
  • the back glass 13 is provided with an opening 13a for taking out the output wiring 20. Further, as will be described later, the sheet member constituting the sealing member 14 on the back side is provided with a slit 14h for taking out the output wiring 20.
  • the terminal box 40 is attached with an adhesive 50 such as silicone resin so as to cover the opening 13a of the back glass 13.
  • the output wiring 20 taken out from the opening 13a is connected to a predetermined terminal plate of the terminal portion 40b in the terminal box 40, and is connected to an external output cable (not shown).
  • the crossover wiring 21 As shown in FIG. 3, also in the fourth embodiment, six strings are connected in series using the crossover wiring 21.
  • the output wiring 20 connected to the crossover wiring 21 of the leftmost string is drawn out from the opening 13 a of the back glass 13.
  • the second and third strings from the left are connected by the crossover wiring 21, and the output wiring 20 connected to the crossover wiring 21 is drawn out from the opening 13 a of the back glass 13.
  • the output wiring 20 connected to the rightmost string transition wiring 21 is drawn out from the slit 13 a of the back glass 13.
  • the second and third strings from the right are connected by the crossover wiring 21, and the output line 20 connected to the crossover wiring 21 is drawn out from the opening 13 a of the back glass 13.
  • the solar cell module is configured by performing the connection.
  • the terminal portion 40b of the terminal box 40 is provided with four terminal boards (not shown), and the corresponding output wirings 20 are connected by soldering.
  • a backflow prevention diode (not shown) is connected between the plurality of terminal plates of the terminal box 40.
  • a plurality of solar cells 11 connected by a surface protection member 12, a surface-side sealing member 14 a, a wiring member 16 from the lower side, a sealing member 14b, the sealing member 14c disposed between the output wiring 20 and the back glass 23, and the back glass 13 are stacked in this order.
  • the output wiring 20 passes through the slit 14h of the sealing member 14b and is drawn from the opening 13a of the back glass 13.
  • the members arranged in this way are laminated by a laminating apparatus.
  • the bottom 40a of the terminal box 40 is bonded with an adhesive 50 or the like so as to close the opening 13a of the back glass 13. Then, the output wiring 20 is soldered to a predetermined terminal plate of the terminal portion 40b in the terminal box 40 by a method described later. And although not shown in figure, the solar cell module 10 is comprised by attaching the case upper cover of the terminal box 40 to the bottom part 40a.
  • the manufacturing apparatus for manufacturing the solar cell module 10 includes a lower housing 200 and an upper housing 202 that is airtightly coupled to the lower housing.
  • a heater plate 201 is disposed in the upper opening of the lower housing 200 in a substantially flush state.
  • the upper housing 202 is provided with a rubber diaphragm 203 on the side facing the opening of the lower housing 200.
  • a packing 204 for holding an airtight state when the two are joined is attached to the peripheral portions of the lower housing 200 and the upper housing 202 over the entire circumference.
  • a vacuum pump (not shown) is connected to the lower housing 200.
  • the solar cell module 10 In manufacturing the solar cell module 10, first, a plurality of solar cells connected to the heater plate 201 of the manufacturing apparatus from the lower side by the surface protection member 12, the surface side sealing member 14 a, and the wiring member 16. 11 ..., the back side sealing members 14b and 14c, and the back glass 13 are stacked in this order.
  • the output wiring 20 is inserted into the opening 13a of the back glass 13, and the output wiring 20 is positioned at a predetermined position and temporarily held.
  • the lower housing 200 and the upper housing 202 are joined. Thereafter, the lower housing 200 is evacuated by a vacuum pump (not shown). At this time, the heater plate 201 is heated to about 130 ° C. to 200 ° C. In this state, the diaphragm 203 is pressed against the solar cell module 10 placed on the heater plate 201 with a pressure of about 0.1 MPa. And sealing member 14a, 14b, 14c gelatinizes, and comprises the sealing member 14 used as a predetermined EVA layer. Thus, the solar cells 11 are sealed in the sealing member 14 in a state of being sandwiched between the surface-side surface protection member 12 and the back-side glass 13.
  • the output wiring 20 drawn from the opening 13s of the back glass 13 is inserted into the opening 40h provided in the bottom 40a of the terminal box 40, and the opening 13a of the back glass 13 is closed, so that the terminal box
  • the bottom 40a of 40 is attached to the back glass 13 with an adhesive 50 made of silicone resin.
  • the output wiring 20 is connected to a predetermined terminal plate of the terminal portion 40 b in the terminal box 40 using a soldering iron 60.
  • the outer surface 13f of the back glass 13 in the vicinity of the terminal box 40 including the portion corresponding to the portion where the output wiring 20 is arranged is preheated by the heating device 65 to be higher than room temperature. Bring to temperature.
  • the heating device 65 a device or a heater that blows hot air 65a on the outer surface 13f is used.
  • the heating device 65 is preheated to a temperature of about 70 ° C. to 80 ° C. Soldering is performed by heating the temperature of the soldering iron 60 to about 250.degree.
  • the outer surface 13f of the back glass 13 is preheated by heating with a heating device 65 at a temperature higher than room temperature and lower than the temperature of the soldering iron 60 in advance.
  • the outer surface 13f is also preheated, so the temperature between the inner surface 13b and the outer surface 13f is increased. The difference is alleviated and the occurrence of cracks and the like of the back glass 13 due to thermal strain can be prevented.
  • the case upper lid (not shown) of the terminal box 40 is attached to the bottom portion 40a to constitute the solar cell module 10.
  • the heating temperature by the heating device 65 is appropriately changed depending on the thickness of the back glass 13 and the thickness and material of the sealing member 14 disposed between the output wiring 20 and the solder using the soldering iron 65. What is necessary is just to select the temperature range which can prevent generation
  • the outer surface 13f of the back glass 13 is set to a temperature higher than room temperature and higher than the temperature of the soldering iron 60 in order to suppress thermal distortion caused by a temperature difference between the outer surface and the inner side during soldering. It is also preheated by heating at a low temperature. In contrast, in the fifth embodiment, heat is prevented from being transmitted from the output wiring 20 to the inside of the solar cell module 10.
  • the output wiring 20 is connected to a predetermined terminal plate of the terminal portion 40 b in the terminal box 40 using a soldering iron 60.
  • a part or all of the output wiring 20 positioned between the opening 13 a of the back glass 13 and the terminal 40 b of the terminal box 40 is cooled by the cooling device 65.
  • the output wiring 20 and the terminal portion 40b are soldered using the soldering iron 60 in a state where the output wiring 20 is cooled. Soldering is performed by heating the temperature of the soldering iron 60 to about 250 ° C.
  • the cooling is performed by the cooling device 65 except for the area where the output wiring 20 located in the terminal box 40 is soldered.
  • the cooling device 65 a device that blows cooling air to the output wiring 20, a device that cools the output wiring 20 by bringing a cooling agent into contact with the output wiring 20, or a device that cools the output wiring 20 using a Peltier element can be used. .
  • the cooling device 65 cools the output wiring 20 located in the terminal box 40 except for the area to be soldered, whereby heat is transmitted to the output wiring 20 during soldering. Even in this case, the output wiring 20 is cooled by the cooling device 65, and heat can be prevented from being transmitted to the inside of the solar cell module 10. As a result, the temperature difference between the inner surface 13b and the outer surface 13f of the back glass 13 is relaxed, and the occurrence of cracks and the like of the back glass 13 due to thermal strain can be prevented.
  • the case upper lid (not shown) of the terminal box 40 is attached to the bottom portion 40a to constitute the solar cell module 10.
  • an unstrengthened plate glass is used as the back surface protection member.
  • the present invention is not limited to this, and a translucent plastic or the like can be used.
  • the solar cell according to the present invention may be a double-sided light receiving solar cell or a single-sided light receiving solar cell. Further, it may be a back junction solar cell. Furthermore, the present invention can be applied not only to a crystalline solar cell module but also to a thin film solar cell module. Further, the output wiring in the present invention only needs to include at least positive and negative wiring.
  • the scope of the present invention is shown not by the above description of the embodiment but by the scope of the claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of the claims.

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  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Photovoltaic Devices (AREA)

Abstract

Cette invention concerne un module de cellules solaires qui présente un rendement amélioré, même en cas d'utilisation d'une plaque de verre en tant qu'élément de protection arrière. Ledit module de cellules solaires (10) comprend une pluralité de cellules solaires (11) scellées par un élément d'étanchéité (14) entre un élément de protection à surface translucide (12) et un panneau de verre arrière (13). Un câblage de sortie (20) destiné à fournir en sortie l'énergie produite par la cellule solaire (11) est enfilé à travers une ouverture (13a) ménagée dans le panneau de verre arrière (13). Une feuille de résine (141) est disposée entre le câblage de sortie (20) et le panneau de verre arrière (13) doté de l'ouverture (13a). Deux feuilles de résine de réduction des contraintes (142, 143) sont disposées à une distance prédéterminée de ladite feuille de résine (141).
PCT/JP2012/057448 2011-03-24 2012-03-23 Module de cellules solaires et son procédé de fabrication WO2012128341A1 (fr)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
JP2011066598A JP2012204533A (ja) 2011-03-24 2011-03-24 太陽電池モジュール及びその製造方法
JP2011-066599 2011-03-24
JP2011-066598 2011-03-24
JP2011-066602 2011-03-24
JP2011-066600 2011-03-24
JP2011066602A JP2012204536A (ja) 2011-03-24 2011-03-24 太陽電池モジュールの製造方法
JP2011066600A JP2012204535A (ja) 2011-03-24 2011-03-24 太陽電池モジュールの製造方法
JP2011066599A JP2012204534A (ja) 2011-03-24 2011-03-24 太陽電池モジュール及びその製造方法

Publications (1)

Publication Number Publication Date
WO2012128341A1 true WO2012128341A1 (fr) 2012-09-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2804224A1 (fr) * 2013-05-13 2014-11-19 Fraunhofer Gesellschaft zur Förderung der angewandten Forschung e.V. Procédé de fabrication d'un module photovoltaïque

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62291934A (ja) * 1986-06-12 1987-12-18 Alps Electric Co Ltd フリツプチツプの実装方法
JP2002295911A (ja) * 2001-03-30 2002-10-09 Noritz Corp 混成型太陽熱集熱装置
JP2006019440A (ja) * 2004-06-30 2006-01-19 Kyocera Corp 太陽電池モジュール
JP2008246516A (ja) * 2007-03-29 2008-10-16 Asahi Glass Co Ltd 車両用窓ガラスへの端子のハンダ付け方法及び回路を接続した車両用窓ガラス
JP2011054663A (ja) * 2009-08-31 2011-03-17 Sanyo Electric Co Ltd 太陽電池モジュール

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62291934A (ja) * 1986-06-12 1987-12-18 Alps Electric Co Ltd フリツプチツプの実装方法
JP2002295911A (ja) * 2001-03-30 2002-10-09 Noritz Corp 混成型太陽熱集熱装置
JP2006019440A (ja) * 2004-06-30 2006-01-19 Kyocera Corp 太陽電池モジュール
JP2008246516A (ja) * 2007-03-29 2008-10-16 Asahi Glass Co Ltd 車両用窓ガラスへの端子のハンダ付け方法及び回路を接続した車両用窓ガラス
JP2011054663A (ja) * 2009-08-31 2011-03-17 Sanyo Electric Co Ltd 太陽電池モジュール

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2804224A1 (fr) * 2013-05-13 2014-11-19 Fraunhofer Gesellschaft zur Förderung der angewandten Forschung e.V. Procédé de fabrication d'un module photovoltaïque
US9318463B2 (en) 2013-05-13 2016-04-19 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method for producing a photovoltaic module

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