WO2012014922A1 - Solar cell module - Google Patents

Solar cell module Download PDF

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Publication number
WO2012014922A1
WO2012014922A1 PCT/JP2011/067064 JP2011067064W WO2012014922A1 WO 2012014922 A1 WO2012014922 A1 WO 2012014922A1 JP 2011067064 W JP2011067064 W JP 2011067064W WO 2012014922 A1 WO2012014922 A1 WO 2012014922A1
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WO
WIPO (PCT)
Prior art keywords
solar cell
cell panel
cell module
sealing member
disposed
Prior art date
Application number
PCT/JP2011/067064
Other languages
French (fr)
Japanese (ja)
Inventor
正治 竹中
剛 本山
直生 辻本
貴広 中村
剛之 粟生
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
Application filed by 三洋電機株式会社 filed Critical 三洋電機株式会社
Publication of WO2012014922A1 publication Critical patent/WO2012014922A1/en

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    • 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
    • H01L31/02—Details
    • H01L31/02002—Arrangements for conducting electric current to or from the device in operations
    • H01L31/02005—Arrangements for conducting electric current to or from the device in operations for device characterised by at least one potential jump barrier or surface barrier
    • H01L31/02008—Arrangements for conducting electric current to or from the device in operations for device characterised by at least one potential jump barrier or surface barrier for solar cells or solar cell modules
    • 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
    • H02S20/00—Supporting structures for PV modules
    • 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 more particularly to a solar cell module in which a side end portion of a solar cell panel is accommodated in an accommodating portion of a frame.
  • Patent Document 1 Japanese Patent Laid-Open No. 2003-282900
  • Patent Document 1 discloses a solar battery panel in which a solar battery cell and a protective film (sheet member) covered with a sealing resin are disposed between a glass plate and a synthetic resin sheet, and a side edge of the solar battery panel.
  • the solar cell module provided with the frame in which the recessed part in which this is accommodated was formed is disclosed.
  • the protective film of the solar cell panel described in Patent Document 1 is formed so that an Al foil is sandwiched from above and below by a weatherproof sheet made of PVF (polyvinyl fluoride).
  • the frame is made of metal, and the inner lower surface of the recess is formed in a horizontal plane.
  • the present invention has been made to solve the above-described problems, and one object of the present invention is to provide a solar cell module that can easily improve the reliability of insulation.
  • a solar cell module includes a solar cell group comprising a plurality of solar cells, and a sheet member having a metal layer and disposed below the solar cell group.
  • a panel and a frame including an accommodating portion in which a side end portion of the solar cell panel is accommodated, and an inner lower surface of the accommodating portion of the frame has a surface inclined downward at least toward the solar cell group side.
  • the inner lower surface of the housing portion of the frame body has a surface that is inclined downward toward at least the solar cell group side, whereby the inner lower surface of the housing portion of the frame body is in a horizontal plane.
  • the distance between the sheet member having the metal layer and the inner lower surface of the accommodating portion can be increased, sufficient insulation between the metal layer of the sheet member and the frame can be ensured.
  • FIG. 3 is a cross-sectional view of the solar cell module taken along line 200-200 in FIG.
  • FIG. 3 is an enlarged cross-sectional view of the solar cell module taken along the line 200-200 in FIG.
  • FIG. 3 is a cross-sectional view of the solar cell module taken along line 300-300 in FIG.
  • a solar cell module 100 includes a solar cell panel 1 and a frame 2 for supporting the solar cell panel 1.
  • the solar cell panel 1 and the frame body 2 have a substantially rectangular shape including a pair of long sides extending in the X direction and a pair of short sides extending in the Y direction when viewed in plan (in plan view).
  • the upper surface 1a of the solar cell panel 1 is formed along a horizontal plane.
  • a terminal box 3 for collecting electricity generated in the solar cell panel 1 is disposed on the lower surface 1 b side of the solar cell panel 1 and the X1 side of the solar cell panel 1. And it is arrange
  • the frame 2 has a total of 10 locations including the vicinity of both ends of each of the pair of long sides, the vicinity of both ends of each of the pair of short sides, and the vicinity of the center of each of the pair of long sides.
  • a draining portion 2a capable of discharging water from the upper surface 1a of the battery panel 1 is provided.
  • the water that flows outward from the draining portion 2 a is configured to be discharged to the outside through a groove portion 2 b formed on the outer peripheral surface of the frame body 2.
  • the draining portion 2a is an example of the “notched portion” in the present invention.
  • the substantially rectangular frame 2 is formed with an accommodating portion 20 including an inner upper surface 20a (see FIG. 5), an inner side surface 20b, and an inner lower surface 20c.
  • the cross-sectional shape of the accommodating part 20 is comprised so that it may become a substantially C-shaped recessed part.
  • a part of the inner upper surface 20 a and the inner side surface 20 b of the housing portion 20 is not formed.
  • the accommodating portion 20 is an example of the “concave portion” in the present invention.
  • the inner upper surface 20a of the frame body 2 is formed along a horizontal plane so as to correspond to the upper surface 1a of the solar cell panel 1, and the inner side surface 20b of the frame body 2 is formed along a vertical surface. .
  • an opening 20 d into which the solar cell panel 1 is inserted is formed on the solar cell group 30 side (X2 side) described later of the housing portion 20.
  • the inner lower surface 20c of the accommodating portion 20 formed in a circumferentially continuous groove shape extends downward (Z2 side) from the lower end of the inner side surface 20b formed on the X2 side to the opening end 20e of the opening 20d of the accommodating portion 20. It is configured to incline toward).
  • the distance L1 in the Z direction between the inner lower surface 20c and the lower surface 1b of the solar cell panel 1 at the opening end 20e is larger than the distance L2 in the Z direction between the lower end of the inner surface 20b and the lower surface 1b of the solar cell panel 1.
  • the inner lower surface 20c of the housing portion 20 is configured to be inclined downward while maintaining substantially the same inclination angle.
  • the frame 2 is made of metal such as Al, so that the inner lower surface 20c of the housing portion 20 is also made of metal.
  • a packing 4 made of a resin such as an olefin-based elastomer for filling the space between the solar cell panel 1 and the frame 2 is disposed in the housing portion 20 of the frame 2.
  • the packing 4 is formed so that the cross-sectional shape is a substantially C shape having a recess.
  • the concave portion of the packing 4 is formed as an accommodating portion 40 in which the solar cell panel 1 is accommodated.
  • the solar cell panel 1 is accommodated in the accommodating portion 40 in a state where the solar cell panel 1 and the interface sealing member 17 described later and the accommodating portion 40 are in close contact with each other.
  • the packing 4 is an example of the “sealing member” in the present invention.
  • the outer upper surface 4 a of the packing 4 is formed along a horizontal plane so as to correspond to the inner upper surface 20 a of the housing portion 20 of the frame body 2. Further, the outer side surface 4 b of the packing 4 is formed along a vertical surface so as to correspond to the inner side surface 20 b of the housing portion 20 of the frame body 2.
  • the outer lower surface 4c on the outer side of the packing 4 extends downward from the lower end of the outer surface 4b formed on the X2 side to the end portion on the X1 side so as to correspond to the inclination of the inner lower surface 20c of the housing portion 20 of the frame body 2 ( It is configured to incline toward (Z2 side). Further, the outer lower surface 4c of the packing 4 is configured to be inclined downward while maintaining an inclination angle substantially the same as the inclination of the inner lower surface 20c of the housing portion 20. That is, among the end portions on the X2 side of the packing 4, the thickness t ⁇ b> 1 in the Z direction of the end portion 4 d located below the housing portion 40 (Z2 side) is located above the housing portion 40 (Z1 side). The end portion 4e is configured to be larger than the thickness t2 in the Z direction.
  • the solar cell panel 1 includes a surface cover 11 made of water-resistant glass, a weather-resistant back cover 12 made of a resin film such as polyvinyl fluoride (PVF), and a surface cover. 11 and a back cover 12, a plurality of solar cells 13, a protective film 14, and a filler 15 are included.
  • the solar cell panel 1 includes a transition tab wiring 16a, a transition tab wiring 16b, a terminal box wiring 16c, and tab wirings 16d and 16e.
  • the front cover 11 and the back cover 12 are examples of the “front cover part” and “back cover part” of the present invention, respectively, and the protective film 14 is an example of the “sheet member” of the present invention.
  • the filler 15 is an example of the “resin member” in the present invention.
  • the filler 15 is made of a resin such as polyvinyl acetate (EVA).
  • EVA polyvinyl acetate
  • the filler 15 extends over substantially the entire area between the front cover 11 and the rear cover 12, a plurality of solar cells 13, a protective film 14, crossover tab wires 16 a and 16 b, and a terminal box wire 16 c.
  • the tab wires 16d and 16e are arranged so as to cover them.
  • an interface A is formed between the front cover 11 and the filler 15
  • an interface B is formed between the back cover 12 and the filler 15. Both of these interfaces A and B are formed so as to extend to the side end 1c of the solar cell panel 1.
  • the side end portion 1 c of the solar cell panel 1 is accommodated in the accommodating portion 20 of the frame body 2 via the interface sealing member 17 and the packing 4.
  • the side surface of the front cover 11 is formed so as to extend along the vertical direction (Z direction) at the side end 1c of the solar cell panel 1 and its periphery, while the side surfaces of the filler 15 and the back cover 12 are It is formed on the battery group 30 side (X2 side) and in a gently curved shape that protrudes outward (downward Z2 side).
  • the filler 15 is Z1 from the solar cell group 30 side (X2 side) toward the inner side surface 20b side (X1 side) of the housing portion 20. It is formed so as to be inclined gently to the side. That is, the thickness of the filler 15 is configured to decrease from the solar cell group 30 side toward the side end portion 1c side.
  • An interfacial sealing member 17 that covers both the interface A between the front cover 11 and the filler 15 and the interface B between the back cover 12 and the filler 15 is disposed at the side end 1c of the solar cell panel 1.
  • This interface sealing member 17 is an opening of the accommodating portion 40 of the packing 4 from the height position between the upper surface (upper surface 1a) of the surface cover 11 and the interface A so as to be along the side end portion 1c of the solar cell panel 1. It is formed to extend to the vicinity of.
  • the interface sealing member 17 is made of a butyl material or the like, and is applied to the side end portion 1c of the solar cell panel 1 before the solar cell panel 1 is accommodated in the frame 2 (packing 4). It is formed so as to cover A and B.
  • each of the plurality of solar cells 13 is connected to the back surface of the solar cell 13 adjacent to one of the X directions (X1 side or X2 side) by tab wiring 16d extending in the X direction.
  • the back surfaces of the plurality of solar cells 13 are connected to the surface of the solar cell 13 adjacent to the other (X2 side or X1 side) in the X direction by tab wiring 16d extending in the X direction. That is, the plurality of solar cells 13 are connected in series in the X direction by the tab wiring 16d.
  • a solar cell group 30 including a plurality of solar cells 13 is formed.
  • the solar cell group 30 is connected to the solar cell group 30 adjacent to one of the Y directions (Y1 side or Y2 side) by a crossover tab wiring 16a on the X1 side extending in the Y direction.
  • the solar cell group 30 is connected to the solar cell group 30 adjacent to the other side (Y2 side or Y1 side) in the Y direction by an X2 side transition tab wiring 16b extending in the Y direction.
  • the X2 side is connected to the solar cell group 30 adjacent in the Y direction, while the X1 side is connected to the solar cell group 30 adjacent in the Y direction.
  • the X1 side end portions of the tab wiring 16d of the solar cell group 30 are connected to each other by the X1 side tab wiring 16e extending in the Y direction. Yes.
  • the protective film 14 has a substantially rectangular shape composed of a pair of long sides extending in the X direction and a pair of short sides extending in the Y direction.
  • Each of a pair of long side of the protective film 14 is provided so that it may be located in the outer side rather than the outer side of the Y direction in the solar cell 13 (solar cell group 30) located in the both ends of the Y direction.
  • each of the pair of short sides of the protective film 14 is provided so as to be located further outside the outer side in the X direction in the cross tab wires 16a and 16b and the tab wire 16e located at the end in the X direction. It has been.
  • the protective film 14 is provided so as to cover the plurality of solar cells 13, the transition tab wirings 16 a and 16 b, and the tab wiring 16 e when viewed in a plan view. Accordingly, moisture from below the solar cell panel 1 (Z2 side (see FIGS. 3 to 5)) reaches the solar cell 13, the transition tab wires 16a and 16b, and the tab wire 16e by the protective film 14. Can be suppressed.
  • the protective film 14 includes a metal layer 14a made of a metal foil such as an Al foil, PVF, PET (polyethylene terephthalate), and the like disposed on the upper and lower surfaces of the metal layer 14a, respectively. And a pair of insulating sheets 14b made of a resin sheet.
  • the protective film 14 is configured to prevent moisture that has entered from the outside from passing through the metal layer 14a to the solar cell 13 side. That is, the protective film 14 has weather resistance.
  • the protective film 14 is below (Z2 side) below the plurality of solar cells 13, the tab wiring 16d, the transition tab wirings 16a and 16b, and the tab wiring 16e, and above the back cover 12 (Z1 side). It is arranged in a state covered with the filler 15.
  • the pair of long sides and the pair of short sides of the protective film 14 are distance L3 from the opening end 20e of the opening 20d of the frame 2 to the solar cell group 30 side (X2 side) through the back cover 12 and the filler 15. It is arranged at a position separated only by. As shown in FIG. 2, the protective film 14 is positioned on the inner side of the opening end 20 e of the frame body 2, and more than the plurality of solar cells 13, the transition tab wirings 16 a and 16 b, and the tab wiring 16 e. It is arranged to be located outside.
  • the protective film 14 has a substantially rectangular opening 14c in a plan view at a position corresponding to the position where the terminal box 3 is disposed.
  • the back cover 12 has a slit 12a at a position corresponding to the position where the terminal box 3 is arranged and at a position corresponding to the opening 14c. Both the opening 14c and the slit 12a are provided to allow the plurality of terminal box wires 16c to pass therethrough.
  • the opening 14c is formed to have an opening area sufficient for the plurality of terminal box wirings 16c to pass therethrough, while the slit 12a is the minimum for the plurality of terminal box wirings 16c to pass therethrough. It is formed to have a limited opening area.
  • the opening area of the slit 12a is smaller than the opening area of the opening 14c. Thereby, it is possible to suppress moisture from entering the solar cell panel 1 through the slit 12a.
  • the opening 14c and the slit 12a are examples of the “first hole” and the “second hole” in the present invention, respectively.
  • the three crossover tab wirings 16a and the pair of tab wirings 16e respectively disposed at both ends in the Y direction are separated by a predetermined distance on the same straight line extending in the Y direction on the X1 side.
  • the four transition tab wires 16b are arranged on the same line extending in the Y direction at a predetermined distance on the X2 side.
  • the plurality of transition tab wirings 16a and tab wirings 16e and tab wirings 16e and tab wirings 16e or the plurality of transition tab wirings 16b extending in the Y direction are arranged in the X direction.
  • transition tab wiring 16a and the tab wiring 16e are examples of the “first wiring” in the present invention.
  • each of the plurality of terminal box wires 16c is connected to each of the plurality of transition tab wires 16a and the pair of tab wires 16e arranged on the X1 side, and the other end of the plurality of terminal box wires 16c.
  • the end is connected to the terminal box 3 fixed to the lower surface 1b side of the solar cell panel 1.
  • the terminal box wiring 16c is an example of the “second wiring” in the present invention.
  • the terminal box wiring 16c is located below (Z2 side) from the cross tab wiring 16a on the X1 side. Then, the solar cell 13 adjacent to the crossover tab wiring 16a and the upper part of the protective film 14 are arranged to extend toward the X2 side.
  • An insulating sheet (not shown) is disposed between the terminal box wiring 16c and the solar cell 13, and is configured to ensure insulation between the terminal box wiring 16c and the solar cell 13.
  • the terminal box wiring 16c is arranged so as to extend toward the Y2 side by bending at a substantially right angle after extending to the predetermined distance X2 side. Thereafter, the terminal box wiring 16c is arranged to extend below the Y2 side solar cell 13 and above the protective film 14 toward the Y2 side.
  • the terminal box wiring 16c is arranged so as to extend toward the predetermined distance Y2 and then bend substantially at a right angle to extend toward the X2 side again. Thereafter, the terminal box wiring 16c extends to the opening 14c of the protective film 14, then extends downward (Z2 side), passes through the opening 14c and the slit 12a, and is disposed on the lower surface 1b of the solar cell panel 1.
  • the terminal box 3 is arranged so as to be connected. As a result, the terminal box wiring 16c is disposed below the solar cell 13 and above the protective film 14, and the X1 side cross tab wiring 16a and the terminal box 3 are connected to the opening 14c and the slit 12a. It is comprised so that it may connect via.
  • the inner lower surface 20c of the accommodating portion 20 of the frame body 2 made of Al is extended from the lower end of the inner side surface 20b formed on the X2 side to the opening end 20e of the opening 20d of the accommodating portion 20.
  • the protective film 14 having the metal layer 14a and the housing are accommodated by inclining downward while maintaining substantially the same inclination angle. Since the distance L3 with the inner lower surface 20c of the portion 20 can be increased, the insulation between the metal layer 14a of the protective film 14 and the frame 2 is sufficiently achieved even when the insulating performance of the protective film 14 is deteriorated. Can be secured.
  • the pair of long sides and the pair of short sides of the protective film 14 are positioned on the solar cell group 30 side (X2 side) that is a distance L3 away from the opening end 20e of the opening 20d of the frame,
  • the protective film 14 and the housing part 20 are inclined.
  • the distance L3 from the inner lower surface 20c can be further increased.
  • the inner lower surface 20c of the accommodating part 20 closest to the protective film 14 is inclined downward, the distance L3 between the protective film 14 and the opening end 20e of the accommodating part 20 can be reliably increased. As a result, the insulation between the metal layer 14a of the protective film 14 and the accommodating portion 20 can be more sufficiently ensured.
  • the protective film 14 And the inner lower surface 20c can be easily increased in distance L3.
  • the inner lower surface 20c is inclined downward as compared with the case where the inclination angle of the inner lower surface 20c is locally varied within the surface.
  • the frame body 2 having the inner lower surface 20c can be easily formed.
  • the protective film 14 is covered with the filler 15.
  • the crossover tab wiring 16a positioned above the protective film 14 and the terminal box 3 positioned below the protective film 14 can be easily connected to the terminal box wiring 16c through the opening 14c.
  • the opening part 14c can be protected by the filler 15 arrange
  • the opening 14c and the slit 12a are formed by forming the slit 12a at a position corresponding to the position where the terminal box 3 of the back cover 12 is disposed and at a position corresponding to the opening 14c.
  • the transition tab wiring 16a positioned above the protective film 14 and the terminal box 3 positioned below the protective film 14 can be easily connected to the terminal box wiring 16c.
  • the terminal box wiring 16c is disposed below the solar cell 13 and above the protective film 14, and the transition tab wiring 16a on the X1 side and the terminal box 3 are opened.
  • the terminal box wiring 16c can be protected by the surface cover 11 and the solar cell 13 from above, and the terminal box wiring 16c can be protected by the protective film 14 from below. Therefore, the terminal box wiring 16c can be extended from the transition tab wiring 16a to the terminal box 3 in a state where the terminal box wiring 16c is reliably protected from the external environment.
  • the outer lower surface 4c on the outer side of the packing 4 is the end on the X1 side from the lower end of the outer surface 4b formed on the X2 side so as to correspond to the inner lower surface 20c of the accommodating portion 20 of the frame body 2. Since the inner lower surface 20c of the housing portion 20 of the frame 2 and the outer lower surface 4c of the packing 4 can be brought into close contact with each other by inclining downward to the portion, the protective film 14 and the inner lower surface 20c of the housing portion 20 The solar cell panel 1 can be reliably held in a state where the distance L3 is maintained.
  • the end portion on the X2 side of the packing 4 is configured to be positioned closer to the inner side surface 20b side (X1 side) of the accommodating portion 20 than the opening end 20e of the opening 20d of the frame body 2 is protected.
  • the solar cell group 30 in which a pair of long sides and a pair of short sides of the film 14 are separated by a distance L3 from the opening end 20e of the opening 20d of the frame 2 through the back cover 12 and the filler 15 without the packing 4 interposed therebetween.
  • the interface sealing member which covers both the interface A between the front cover 11 and the filler 15 and the interface B between the back cover 12 and the filler 15 on the side end 1 c of the solar cell panel 1. 17, not only the packing 4 disposed in the accommodating portion 20 of the frame 2 but also the interface sealing member 17, the filler 15 and the surface cover 11 at the side end portion 1 c of the solar cell panel 1.
  • the interface A can be covered, and the interface B between the back cover 12 and the filler 15 can be covered.
  • the reliability of insulation is reduced due to moisture that has entered the interface A between the filler 15 and the front cover 11 and the interface B between the back cover 12 and the filler 15 at the side end 1c of the solar cell panel 1. It can be suppressed more.
  • it can suppress that the surface cover 11 and the filler 15 peel from the side edge part 1c of the solar cell panel 1, and can suppress that the back surface cover 12 and the filler 15 peel. it can.
  • the interface sealing member 17 is disposed so as to cover the interfaces A and B in a state where the interface sealing member 17 is covered with the packing 4 in the accommodating portion 40 of the packing 4. Since the sealing member 17 can be protected, it is possible to further prevent moisture from entering the interfaces A and B. Moreover, it can suppress more that the surface cover 11 and the filler 15 peel, and that the back surface cover 12 and the filler 15 peel.
  • the end portion located on the upper side of the housing portion 40 is the thickness t1 in the Z direction of the end portion 4d located on the lower side of the housing portion 40.
  • the thickness of the filler 15 is reduced from the X2 side toward the X1 side at the side end portion 1c of the solar cell panel 1 accommodated in the accommodating portion 20 of the frame body 2 and its periphery.
  • the side edge part 1c of the solar cell panel 1 and its periphery can be easily accommodated in the accommodating part 40 of the packing 4.
  • solar cells are provided in the vicinity of both ends of each of the pair of long sides of the frame 2, in the vicinity of both ends of each of the pair of short sides, and in the vicinity of the center of each of the pair of long sides.
  • the inner lower surface 20c of the housing part 20 of the frame body 2 is inclined downward in substantially the entire region from the lower end of the inner side surface 20b formed on the X2 side to the opening 20d of the housing part 20.
  • the present invention is not limited to this. In this invention, it is not necessary to incline over the whole inner lower surface of the accommodating part of a frame. For example, only the inner lower surface in the vicinity of the opening of the housing portion may be inclined downward. Moreover, it is not necessary to incline the inner lower surface of the housing part while maintaining substantially the same angle, and the inner lower surface of the housing part may be made to have different inclination angles in arbitrary regions.
  • the protective film 14 while arrange
  • positioned the filler 15 was shown, this invention is not limited to this.
  • a filler may not be disposed so as to cover the protective film, and a back cover may not be provided separately. That is, you may comprise so that a protective film may serve as the back surface cover of a solar cell panel. At this time, since moisture easily enters the solar cell panel through the opening of the protective film, it is preferable that the protective film is provided with a slit instead of the opening.
  • the solar cell 13 which has an electrode on both surfaces of a surface and a back surface was used, not only this but a back junction type solar cell etc. can be used.
  • the said embodiment showed the example which has arrange
  • packing silicon resin or the like may be disposed in the housing portion of the frame.
  • the length in the X direction of the outer lower surface 4c of the packing 4 is shortened so that the packing 4 used in the above embodiment is not positioned on a straight line connecting the protective film 14 and the opening end 20e of the frame 2.
  • the present invention is not limited to this.
  • the length in the X direction of the outer lower surface 4c of the packing 4 may be increased so that the packing 4 is positioned on a straight line connecting the protective film 14 and the opening end 20e of the frame 2.
  • the interface sealing member which covers both the interface A of the surface cover 11 and the filler 15 and the interface B of the back cover 12 and the filler 15 in the side edge part 1c of the solar cell panel 1 is shown.
  • positioned 17 separately from the packing 4 (sealing member) was shown, this invention is not limited to this. In this invention, it is not necessary to provide an interface sealing member in the side edge part of a solar cell panel. Moreover, you may arrange
  • the protective film 14 as a "sheet member" of the present invention is a metal layer 14a made of a metal foil such as an Al foil, and PVF, PET, etc. respectively disposed on the front and back surfaces of the metal layer 14a.
  • a metal foil such as an Al foil, and PVF, PET, etc.
  • this invention is not limited to this. In this invention, you may comprise so that the protective film as a sheet
  • seat member may consist only of a metal layer.
  • the metal layer of the protective film may be made of a metal foil such as Zn or Fe
  • the insulating sheet may be made of a resin sheet such as PPS (polyphenylene sulfide).
  • the interface sealing member 17 is apply
  • the present invention is not limited to this. In this invention, it is not restricted to the case where an interface sealing member is formed by application

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
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  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Photovoltaic Devices (AREA)

Abstract

Disclosed is a solar cell module comprising: a solar cell group formed by a plurality of solar cells; a solar cell panel containing a metal layer and including a sheet member arranged below the solar cell group; and a frame that includes a housing section wherein a side end section of the solar cell panel is housed. The inside lower surface of the housing section of the frame has at least a surface that slopes downwards towards the solar cell group side.

Description

太陽電池モジュールSolar cell module
　本発明は、太陽電池モジュールに関し、特に、枠体の収容部に太陽電池パネルの側端部が収容される太陽電池モジュールに関する。 The present invention relates to a solar cell module, and more particularly to a solar cell module in which a side end portion of a solar cell panel is accommodated in an accommodating portion of a frame.
　従来、枠体の収容部に太陽電池パネルの側端部が収容される太陽電池モジュールが知られている。このような太陽電池モジュールは、たとえば、特開２００３－２８２９００号公報（特許文献１）に開示されている。 Conventionally, a solar cell module in which a side end portion of a solar cell panel is accommodated in a frame accommodating portion is known. Such a solar cell module is disclosed in, for example, Japanese Patent Laid-Open No. 2003-282900 (Patent Document 1).
　特許文献１には、ガラス板と合成樹脂シートとの間に、封止樹脂によって覆われた太陽電池セルおよび保護フィルム（シート部材）が配置された太陽電池パネルと、太陽電池パネルの側端部が収容される凹部が形成された枠体とを備える太陽電池モジュールが開示されている。特許文献１に記載の太陽電池パネルの保護フィルムは、Ａｌ箔をＰＶＦ（ポリフッ化ビニル）からなる耐候性シートで上下両面から挟み込むようにして形成されている。また、枠体は金属製であるとともに、凹部の内側下面は水平面状に形成されている。 Patent Document 1 discloses a solar battery panel in which a solar battery cell and a protective film (sheet member) covered with a sealing resin are disposed between a glass plate and a synthetic resin sheet, and a side edge of the solar battery panel. The solar cell module provided with the frame in which the recessed part in which this is accommodated was formed is disclosed. The protective film of the solar cell panel described in Patent Document 1 is formed so that an Al foil is sandwiched from above and below by a weatherproof sheet made of PVF (polyvinyl fluoride). The frame is made of metal, and the inner lower surface of the recess is formed in a horizontal plane.
特開２００３－２８２９００号公報JP 2003-282900 A
　しかしながら、特許文献１に開示された太陽電池モジュールでは、枠体の凹部の内側下面が水平面状になるように構成されているため、凹部の内側下面と保護フィルムとの距離が比較的近い。このため、保護フィルムのＡｌ箔と金属製の枠体との絶縁を確保するために、保護フィルムの耐候性シートとして長期間絶縁性能が低下しにくい材質のものを選択するなどの工夫が必要とされていた。 However, in the solar cell module disclosed in Patent Document 1, since the inner lower surface of the recess of the frame is configured to have a horizontal plane, the distance between the inner lower surface of the recess and the protective film is relatively short. For this reason, in order to ensure the insulation between the Al foil of the protective film and the metal frame, it is necessary to devise a material such as a weather resistant sheet for the protective film, which is made of a material whose insulation performance does not easily deteriorate for a long time. It had been.
　この発明は、上記のような課題を解決するためになされたものであり、この発明の１つの目的は、容易に絶縁に関する信頼性を向上させることができる太陽電池モジュールを提供することである。 The present invention has been made to solve the above-described problems, and one object of the present invention is to provide a solar cell module that can easily improve the reliability of insulation.
　上記目的を達成するために、この発明に係る太陽電池モジュールは、複数の太陽電池からなる太陽電池群と、金属層を有し、太陽電池群の下方に配置されたシート部材とを含む太陽電池パネルと、太陽電池パネルの側端部が収容される収容部を含む枠体とを備え、枠体の収容部の内側下面は、少なくとも太陽電池群側に向かって下方に傾斜する面を有する。 To achieve the above object, a solar cell module according to the present invention includes a solar cell group comprising a plurality of solar cells, and a sheet member having a metal layer and disposed below the solar cell group. A panel and a frame including an accommodating portion in which a side end portion of the solar cell panel is accommodated, and an inner lower surface of the accommodating portion of the frame has a surface inclined downward at least toward the solar cell group side.
　上記の太陽電池モジュールでは、枠体の収容部の内側下面が、少なくとも太陽電池群側に向かって下方に傾斜する面を有することによって、枠体の収容部の内側下面が水平面状である場合と比べて、金属層を有するシート部材と収容部の内側下面との距離を大きくすることができるので、シート部材の金属層と枠体との絶縁を十分に確保することができる。 In the above solar cell module, the inner lower surface of the housing portion of the frame body has a surface that is inclined downward toward at least the solar cell group side, whereby the inner lower surface of the housing portion of the frame body is in a horizontal plane. In comparison, since the distance between the sheet member having the metal layer and the inner lower surface of the accommodating portion can be increased, sufficient insulation between the metal layer of the sheet member and the frame can be ensured.
本発明の一実施形態による太陽電池モジュールの斜視図である。It is a perspective view of the solar cell module by one Embodiment of this invention. 本発明の一実施形態による太陽電池モジュールの下面図である。It is a bottom view of the solar cell module by one Embodiment of this invention. 図２の２００－２００線に沿った太陽電池モジュールの断面図である。FIG. 3 is a cross-sectional view of the solar cell module taken along line 200-200 in FIG. 図２の２００－２００線に沿った太陽電池モジュールの拡大断面図である。FIG. 3 is an enlarged cross-sectional view of the solar cell module taken along the line 200-200 in FIG. 図２の３００－３００線に沿った太陽電池モジュールの断面図である。FIG. 3 is a cross-sectional view of the solar cell module taken along line 300-300 in FIG.
　以下、本発明の実施形態を図面に基づいて説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
　図１および図２に示すように、本発明の一実施形態による太陽電池モジュール１００は、太陽電池パネル１と、太陽電池パネル１を支持するための枠体２とを備えている。太陽電池パネル１および枠体２は、平面的に見て（平面視において）、Ｘ方向に延びる一対の長辺とＹ方向に延びる一対の短辺とからなる略長方形形状を有する。また、太陽電池パネル１の上面１ａは、水平面に沿って形成されている。また、図２に示すように、太陽電池パネル１において発電された電気を集電するための端子ボックス３が太陽電池パネル１の下面１ｂ側に配置されているとともに、太陽電池パネル１のＸ１側で、かつ、Ｙ方向の略中央に配置されている。 As shown in FIGS. 1 and 2, a solar cell module 100 according to an embodiment of the present invention includes a solar cell panel 1 and a frame 2 for supporting the solar cell panel 1. The solar cell panel 1 and the frame body 2 have a substantially rectangular shape including a pair of long sides extending in the X direction and a pair of short sides extending in the Y direction when viewed in plan (in plan view). Moreover, the upper surface 1a of the solar cell panel 1 is formed along a horizontal plane. As shown in FIG. 2, a terminal box 3 for collecting electricity generated in the solar cell panel 1 is disposed on the lower surface 1 b side of the solar cell panel 1 and the X1 side of the solar cell panel 1. And it is arrange | positioned in the approximate center of the Y direction.
　また、枠体２には、一対の長辺の各々の両端部近傍と、一対の短辺の各々の両端部近傍と、一対の長辺の各々の中央部近傍との計１０箇所に、太陽電池パネル１の上面１ａから外側に水を排出することが可能な水切り部２ａが設けられている。この水切り部２ａから外側に流れた水は、枠体２の外周面に形成された溝部２ｂを介して、外部に排出されるように構成されている。なお、水切り部２ａは、本発明の「切り欠き部」の一例である。 In addition, the frame 2 has a total of 10 locations including the vicinity of both ends of each of the pair of long sides, the vicinity of both ends of each of the pair of short sides, and the vicinity of the center of each of the pair of long sides. A draining portion 2a capable of discharging water from the upper surface 1a of the battery panel 1 is provided. The water that flows outward from the draining portion 2 a is configured to be discharged to the outside through a groove portion 2 b formed on the outer peripheral surface of the frame body 2. The draining portion 2a is an example of the “notched portion” in the present invention.
　また、図３～図５に示すように、略長方形形状の枠体２には、内側上面２０ａ（図５参照）、内側面２０ｂおよび内側下面２０ｃを含む収容部２０が形成されている。収容部２０の断面形状は、略Ｃ字形状の凹部となるように構成されている。なお、図３および図４に示すように、枠体２の水切り部２ａが形成されている領域では、収容部２０の内側上面２０ａおよび内側面２０ｂの一部は形成されていない。なお、収容部２０は、本発明の「凹部」の一例である。 Further, as shown in FIGS. 3 to 5, the substantially rectangular frame 2 is formed with an accommodating portion 20 including an inner upper surface 20a (see FIG. 5), an inner side surface 20b, and an inner lower surface 20c. The cross-sectional shape of the accommodating part 20 is comprised so that it may become a substantially C-shaped recessed part. As shown in FIGS. 3 and 4, in the region where the draining portion 2 a of the frame 2 is formed, a part of the inner upper surface 20 a and the inner side surface 20 b of the housing portion 20 is not formed. The accommodating portion 20 is an example of the “concave portion” in the present invention.
　また、枠体２の内側上面２０ａは、太陽電池パネル１の上面１ａに対応するように水平面に沿って形成されており、枠体２の内側面２０ｂは、鉛直面に沿って形成されている。 The inner upper surface 20a of the frame body 2 is formed along a horizontal plane so as to correspond to the upper surface 1a of the solar cell panel 1, and the inner side surface 20b of the frame body 2 is formed along a vertical surface. .
　ここで、本実施形態では、図４および図５に示すように、収容部２０の後述する太陽電池群３０側（Ｘ２側）には、太陽電池パネル１が挿入される開口２０ｄが形成されている。また、周状に連続する溝状に形成された収容部２０の内側下面２０ｃは、Ｘ２側に形成された内側面２０ｂの下端から収容部２０の開口２０ｄの開口端２０ｅまで、下方（Ｚ２側）に向かって傾斜するように構成されている。すなわち、開口端２０ｅにおける内側下面２０ｃと太陽電池パネル１の下面１ｂとのＺ方向の距離Ｌ１は、内側面２０ｂの下端と太陽電池パネル１の下面１ｂとのＺ方向の距離Ｌ２よりも大きくなるように構成されている。また、収容部２０の内側下面２０ｃは、略同一の傾斜角度を保った状態で下方に傾斜するように構成されている。なお、枠体２は、Ａｌなどの金属からなることによって、収容部２０の内側下面２０ｃも金属からなる。 Here, in this embodiment, as shown in FIG. 4 and FIG. 5, an opening 20 d into which the solar cell panel 1 is inserted is formed on the solar cell group 30 side (X2 side) described later of the housing portion 20. Yes. In addition, the inner lower surface 20c of the accommodating portion 20 formed in a circumferentially continuous groove shape extends downward (Z2 side) from the lower end of the inner side surface 20b formed on the X2 side to the opening end 20e of the opening 20d of the accommodating portion 20. It is configured to incline toward). That is, the distance L1 in the Z direction between the inner lower surface 20c and the lower surface 1b of the solar cell panel 1 at the opening end 20e is larger than the distance L2 in the Z direction between the lower end of the inner surface 20b and the lower surface 1b of the solar cell panel 1. It is configured as follows. Further, the inner lower surface 20c of the housing portion 20 is configured to be inclined downward while maintaining substantially the same inclination angle. In addition, the frame 2 is made of metal such as Al, so that the inner lower surface 20c of the housing portion 20 is also made of metal.
　枠体２の収容部２０には、太陽電池パネル１と枠体２との間を埋めるためのオレフィン系エラストマなどの樹脂からなるパッキン４が配置されている。このパッキン４は、断面形状が凹部を有する略Ｃ字形状となるように形成されている。パッキン４の凹部は、太陽電池パネル１が収容される収容部４０として形成されている。この収容部４０には、太陽電池パネル１および後述する界面封止部材１７と、収容部４０とが密着した状態で、太陽電池パネル１が収容されている。なお、パッキン４は、本発明の「封止部材」の一例である。 A packing 4 made of a resin such as an olefin-based elastomer for filling the space between the solar cell panel 1 and the frame 2 is disposed in the housing portion 20 of the frame 2. The packing 4 is formed so that the cross-sectional shape is a substantially C shape having a recess. The concave portion of the packing 4 is formed as an accommodating portion 40 in which the solar cell panel 1 is accommodated. The solar cell panel 1 is accommodated in the accommodating portion 40 in a state where the solar cell panel 1 and the interface sealing member 17 described later and the accommodating portion 40 are in close contact with each other. The packing 4 is an example of the “sealing member” in the present invention.
　図５に示すように、パッキン４の外側上面４ａは、枠体２の収容部２０の内側上面２０ａに対応するように、水平面に沿って形成されている。また、パッキン４の外側面４ｂは、枠体２の収容部２０の内側面２０ｂに対応するように、鉛直面に沿って形成されている。 As shown in FIG. 5, the outer upper surface 4 a of the packing 4 is formed along a horizontal plane so as to correspond to the inner upper surface 20 a of the housing portion 20 of the frame body 2. Further, the outer side surface 4 b of the packing 4 is formed along a vertical surface so as to correspond to the inner side surface 20 b of the housing portion 20 of the frame body 2.
　パッキン４の外側の外側下面４ｃは、枠体２の収容部２０の内側下面２０ｃにおける傾斜に対応するように、Ｘ２側に形成された外側面４ｂの下端からＸ１側の端部まで、下方（Ｚ２側）に向かって傾斜するように構成されている。また、パッキン４の外側下面４ｃは、収容部２０の内側下面２０ｃにおける傾斜と略同一の傾斜角度を保った状態で下方に傾斜するように構成されている。つまり、パッキン４のＸ２側の端部のうち、収容部４０よりも下側（Ｚ２側）に位置する端部４ｄのＺ方向の厚みｔ１は、収容部４０よりも上側（Ｚ１側）に位置する端部４ｅのＺ方向の厚みｔ２よりも大きくなるように構成されている。 The outer lower surface 4c on the outer side of the packing 4 extends downward from the lower end of the outer surface 4b formed on the X2 side to the end portion on the X1 side so as to correspond to the inclination of the inner lower surface 20c of the housing portion 20 of the frame body 2 ( It is configured to incline toward (Z2 side). Further, the outer lower surface 4c of the packing 4 is configured to be inclined downward while maintaining an inclination angle substantially the same as the inclination of the inner lower surface 20c of the housing portion 20. That is, among the end portions on the X2 side of the packing 4, the thickness t <b> 1 in the Z direction of the end portion 4 d located below the housing portion 40 (Z2 side) is located above the housing portion 40 (Z1 side). The end portion 4e is configured to be larger than the thickness t2 in the Z direction.
　図３～図５に示すように、太陽電池パネル１は、耐水性を有するガラスからなる表面カバー１１と、ポリフッ化ビニル（ＰＶＦ）などの樹脂フィルムからなる耐候性の裏面カバー１２と、表面カバー１１と裏面カバー１２との間に配置される複数の太陽電池１３、保護フィルム１４および充填材１５とを含む。また、図２に示すように、太陽電池パネル１は、渡りタブ配線１６ａと、渡りタブ配線１６ｂと、端子ボックス用配線１６ｃと、タブ配線１６ｄおよび１６ｅとを含む。なお、表面カバー１１および裏面カバー１２は、それぞれ、本発明の「表面カバー部」および「裏面カバー部」の一例であり、保護フィルム１４は、本発明の「シート部材」の一例である。また、充填材１５は、本発明の「樹脂部材」の一例である。 As shown in FIGS. 3 to 5, the solar cell panel 1 includes a surface cover 11 made of water-resistant glass, a weather-resistant back cover 12 made of a resin film such as polyvinyl fluoride (PVF), and a surface cover. 11 and a back cover 12, a plurality of solar cells 13, a protective film 14, and a filler 15 are included. As shown in FIG. 2, the solar cell panel 1 includes a transition tab wiring 16a, a transition tab wiring 16b, a terminal box wiring 16c, and tab wirings 16d and 16e. The front cover 11 and the back cover 12 are examples of the “front cover part” and “back cover part” of the present invention, respectively, and the protective film 14 is an example of the “sheet member” of the present invention. The filler 15 is an example of the “resin member” in the present invention.
　図３～図５に示すように、充填材１５は、ポリ酢酸ビニル（ＥＶＡ）などの樹脂からなる。また、充填材１５は、表面カバー１１と裏面カバー１２との間の略全体に渡って、複数の太陽電池１３と、保護フィルム１４と、渡りタブ配線１６ａおよび１６ｂと、端子ボックス用配線１６ｃと、タブ配線１６ｄおよび１６ｅとを覆うように配置されている。これにより、表面カバー１１と充填材１５との間には界面Ａが形成されているとともに、裏面カバー１２と充填材１５との間には界面Ｂが形成されている。これら界面ＡおよびＢは、共に、太陽電池パネル１の側端部１ｃまで延びるように形成されている。太陽電池パネル１の側端部１ｃは、界面封止部材１７とパッキン４とを介して枠体２の収容部２０に収容されている。 As shown in FIGS. 3 to 5, the filler 15 is made of a resin such as polyvinyl acetate (EVA). In addition, the filler 15 extends over substantially the entire area between the front cover 11 and the rear cover 12, a plurality of solar cells 13, a protective film 14, crossover tab wires 16 a and 16 b, and a terminal box wire 16 c. The tab wires 16d and 16e are arranged so as to cover them. Thus, an interface A is formed between the front cover 11 and the filler 15, and an interface B is formed between the back cover 12 and the filler 15. Both of these interfaces A and B are formed so as to extend to the side end 1c of the solar cell panel 1. The side end portion 1 c of the solar cell panel 1 is accommodated in the accommodating portion 20 of the frame body 2 via the interface sealing member 17 and the packing 4.
　太陽電池パネル１の側端部１ｃおよびその周辺において、表面カバー１１の側面は鉛直方向（Ｚ方向）に沿って延びるように形成されている一方、充填材１５および裏面カバー１２の側面は、太陽電池群３０側（Ｘ２側）で、かつ、下方（Ｚ２側）に向かって外側に凸の緩やかな曲面状に形成されている。具体的には、太陽電池パネル１の側端部１ｃおよびその周辺において、充填材１５が、太陽電池群３０側（Ｘ２側）から収容部２０の内側面２０ｂ側（Ｘ１側）に向かってＺ１側になだらかに傾斜するように形成されている。つまり、充填材１５の厚みは、太陽電池群３０側から側端部１ｃ側に向かって小さくなるように構成されている。 The side surface of the front cover 11 is formed so as to extend along the vertical direction (Z direction) at the side end 1c of the solar cell panel 1 and its periphery, while the side surfaces of the filler 15 and the back cover 12 are It is formed on the battery group 30 side (X2 side) and in a gently curved shape that protrudes outward (downward Z2 side). Specifically, in the side end portion 1c of the solar cell panel 1 and its periphery, the filler 15 is Z1 from the solar cell group 30 side (X2 side) toward the inner side surface 20b side (X1 side) of the housing portion 20. It is formed so as to be inclined gently to the side. That is, the thickness of the filler 15 is configured to decrease from the solar cell group 30 side toward the side end portion 1c side.
　また、太陽電池パネル１の側端部１ｃには、表面カバー１１と充填材１５との界面Ａと、裏面カバー１２と充填材１５との界面Ｂと、を共に覆う界面封止部材１７が配置されている。この界面封止部材１７は、表面カバー１１の上面（上面１ａ）と界面Ａとの間の高さ位置から、太陽電池パネル１の側端部１ｃに沿うようにパッキン４の収容部４０の開口の近傍まで延びるように形成されている。なお、界面封止部材１７はブチル系の材料などからなり、太陽電池パネル１を枠体２（パッキン４）に収容する前に、太陽電池パネル１の側端部１ｃに塗布されることによって界面ＡおよびＢを覆うように形成されている。 An interfacial sealing member 17 that covers both the interface A between the front cover 11 and the filler 15 and the interface B between the back cover 12 and the filler 15 is disposed at the side end 1c of the solar cell panel 1. Has been. This interface sealing member 17 is an opening of the accommodating portion 40 of the packing 4 from the height position between the upper surface (upper surface 1a) of the surface cover 11 and the interface A so as to be along the side end portion 1c of the solar cell panel 1. It is formed to extend to the vicinity of. The interface sealing member 17 is made of a butyl material or the like, and is applied to the side end portion 1c of the solar cell panel 1 before the solar cell panel 1 is accommodated in the frame 2 (packing 4). It is formed so as to cover A and B.
　図２に示すように、複数の太陽電池１３の表面は、各々、Ｘ方向に延びるタブ配線１６ｄによって、Ｘ方向のいずれか一方（Ｘ１側またはＸ２側）に隣接する太陽電池１３の裏面と接続されている。また、複数の太陽電池１３の裏面は、各々、Ｘ方向に延びるタブ配線１６ｄによって、Ｘ方向のいずれか他方（Ｘ２側またはＸ１側）に隣接する太陽電池１３の表面と接続されている。すなわち、複数の太陽電池１３は、タブ配線１６ｄによって、Ｘ方向に直列に接続されている。これにより、複数の太陽電池１３からなる太陽電池群３０が形成されている。 As shown in FIG. 2, the surface of each of the plurality of solar cells 13 is connected to the back surface of the solar cell 13 adjacent to one of the X directions (X1 side or X2 side) by tab wiring 16d extending in the X direction. Has been. Further, the back surfaces of the plurality of solar cells 13 are connected to the surface of the solar cell 13 adjacent to the other (X2 side or X1 side) in the X direction by tab wiring 16d extending in the X direction. That is, the plurality of solar cells 13 are connected in series in the X direction by the tab wiring 16d. Thereby, a solar cell group 30 including a plurality of solar cells 13 is formed.
　Ｘ方向に接続された太陽電池群３０は、Ｙ方向に並ぶように８つ配置されている。太陽電池群３０は、Ｙ方向に延びるＸ１側の渡りタブ配線１６ａによって、Ｙ方向のいずれか一方（Ｙ１側またはＹ２側）に隣接する太陽電池群３０と接続されている。また、太陽電池群３０は、Ｙ方向に延びるＸ２側の渡りタブ配線１６ｂによって、Ｙ方向のいずれか他方（Ｙ２側またはＹ１側）に隣接する太陽電池群３０と接続されている。なお、Ｙ方向の両端部に位置する太陽電池群３０においては、Ｘ２側ではＹ方向に隣接する太陽電池群３０と接続されている一方、Ｘ１側ではＹ方向に隣接する太陽電池群３０と接続されていない。なお、Ｙ方向の両端部に位置する太陽電池群３０のＸ１側では、Ｙ方向に延びるＸ１側のタブ配線１６ｅによって、太陽電池群３０のタブ配線１６ｄのＸ１側の端部同士が接続されている。 Eight solar cell groups 30 connected in the X direction are arranged in the Y direction. The solar cell group 30 is connected to the solar cell group 30 adjacent to one of the Y directions (Y1 side or Y2 side) by a crossover tab wiring 16a on the X1 side extending in the Y direction. In addition, the solar cell group 30 is connected to the solar cell group 30 adjacent to the other side (Y2 side or Y1 side) in the Y direction by an X2 side transition tab wiring 16b extending in the Y direction. In addition, in the solar cell group 30 located at both ends in the Y direction, the X2 side is connected to the solar cell group 30 adjacent in the Y direction, while the X1 side is connected to the solar cell group 30 adjacent in the Y direction. It has not been. Note that, on the X1 side of the solar cell group 30 located at both ends in the Y direction, the X1 side end portions of the tab wiring 16d of the solar cell group 30 are connected to each other by the X1 side tab wiring 16e extending in the Y direction. Yes.
　保護フィルム１４は、Ｘ方向に延びる一対の長辺とＹ方向に延びる一対の短辺とからなる略長方形形状を有している。保護フィルム１４の一対の長辺の各々は、Ｙ方向の両端部に位置する太陽電池１３（太陽電池群３０）におけるＹ方向の外側の辺よりもさらに外側に位置するように設けられている。また、保護フィルム１４の一対の短辺の各々は、Ｘ方向の端部に位置する渡りタブ配線１６ａおよび１６ｂとタブ配線１６ｅとにおけるＸ方向の外側の辺よりもさらに外側に位置するように設けられている。すなわち、保護フィルム１４は、平面的に見て、複数の太陽電池１３と、渡りタブ配線１６ａおよび１６ｂと、タブ配線１６ｅとを覆うように設けられている。これにより、保護フィルム１４によって、太陽電池パネル１の下方（Ｚ２側（図３～図５参照））からの水分が太陽電池１３と、渡りタブ配線１６ａおよび１６ｂと、タブ配線１６ｅとに到達するのを抑制することが可能である。 The protective film 14 has a substantially rectangular shape composed of a pair of long sides extending in the X direction and a pair of short sides extending in the Y direction. Each of a pair of long side of the protective film 14 is provided so that it may be located in the outer side rather than the outer side of the Y direction in the solar cell 13 (solar cell group 30) located in the both ends of the Y direction. Further, each of the pair of short sides of the protective film 14 is provided so as to be located further outside the outer side in the X direction in the cross tab wires 16a and 16b and the tab wire 16e located at the end in the X direction. It has been. That is, the protective film 14 is provided so as to cover the plurality of solar cells 13, the transition tab wirings 16 a and 16 b, and the tab wiring 16 e when viewed in a plan view. Accordingly, moisture from below the solar cell panel 1 (Z2 side (see FIGS. 3 to 5)) reaches the solar cell 13, the transition tab wires 16a and 16b, and the tab wire 16e by the protective film 14. Can be suppressed.
　また、保護フィルム１４は、図４および図５に示すように、Ａｌ箔などの金属箔からなる金属層１４ａと、金属層１４ａの上面および下面にそれぞれ配置されたＰＶＦやＰＥＴ（ポリエチレンテレフタレート）などの樹脂シートからなる一対の絶縁シート１４ｂとから構成されている。保護フィルム１４は、金属層１４ａによって、外部から浸入した水分を太陽電池１３側に透過させないように構成されている。すなわち、保護フィルム１４は、耐候性を有する。また、保護フィルム１４は、複数の太陽電池１３と、タブ配線１６ｄと、渡りタブ配線１６ａおよび１６ｂと、タブ配線１６ｅとの下方（Ｚ２側）で、かつ、裏面カバー１２の上方（Ｚ１側）に充填材１５に覆われた状態で配置されている。 Moreover, as shown in FIGS. 4 and 5, the protective film 14 includes a metal layer 14a made of a metal foil such as an Al foil, PVF, PET (polyethylene terephthalate), and the like disposed on the upper and lower surfaces of the metal layer 14a, respectively. And a pair of insulating sheets 14b made of a resin sheet. The protective film 14 is configured to prevent moisture that has entered from the outside from passing through the metal layer 14a to the solar cell 13 side. That is, the protective film 14 has weather resistance. In addition, the protective film 14 is below (Z2 side) below the plurality of solar cells 13, the tab wiring 16d, the transition tab wirings 16a and 16b, and the tab wiring 16e, and above the back cover 12 (Z1 side). It is arranged in a state covered with the filler 15.
　保護フィルム１４の一対の長辺および一対の短辺は、裏面カバー１２と充填材１５とを介して、太陽電池群３０側（Ｘ２側）に枠体２の開口２０ｄの開口端２０ｅから距離Ｌ３だけ隔てた位置に配置されている。なお、図２に示すように、保護フィルム１４は、枠体２の開口端２０ｅよりも内側に位置するとともに、複数の太陽電池１３と、渡りタブ配線１６ａおよび１６ｂと、タブ配線１６ｅとよりも外側に位置するように配置されている。 The pair of long sides and the pair of short sides of the protective film 14 are distance L3 from the opening end 20e of the opening 20d of the frame 2 to the solar cell group 30 side (X2 side) through the back cover 12 and the filler 15. It is arranged at a position separated only by. As shown in FIG. 2, the protective film 14 is positioned on the inner side of the opening end 20 e of the frame body 2, and more than the plurality of solar cells 13, the transition tab wirings 16 a and 16 b, and the tab wiring 16 e. It is arranged to be located outside.
　また、保護フィルム１４は、端子ボックス３が配置される位置に対応する位置に、平面的に見て略長方形形状の開口部１４ｃを有する。また、裏面カバー１２は、図５に示すように、端子ボックス３が配置される位置に対応する位置で、かつ、開口部１４ｃに対応する位置に、スリット１２ａを有する。この開口部１４ｃおよびスリット１２ａは、共に複数の端子ボックス用配線１６ｃを通過させるために設けられている。なお、開口部１４ｃは、複数の端子ボックス用配線１６ｃが通過するのに十分な開口面積を有するように形成されている一方、スリット１２ａは、複数の端子ボックス用配線１６ｃが通過するのに最低限の開口面積を有するように形成されている。つまり、スリット１２ａの開口面積は、開口部１４ｃの開口面積よりも小さい。これにより、スリット１２ａを介して水分が太陽電池パネル１内に浸入するのを抑制することが可能である。なお、開口部１４ｃおよびスリット１２ａは、それぞれ、本発明の「第１穴部」および「第２穴部」の一例である。 Moreover, the protective film 14 has a substantially rectangular opening 14c in a plan view at a position corresponding to the position where the terminal box 3 is disposed. Further, as shown in FIG. 5, the back cover 12 has a slit 12a at a position corresponding to the position where the terminal box 3 is arranged and at a position corresponding to the opening 14c. Both the opening 14c and the slit 12a are provided to allow the plurality of terminal box wires 16c to pass therethrough. The opening 14c is formed to have an opening area sufficient for the plurality of terminal box wirings 16c to pass therethrough, while the slit 12a is the minimum for the plurality of terminal box wirings 16c to pass therethrough. It is formed to have a limited opening area. That is, the opening area of the slit 12a is smaller than the opening area of the opening 14c. Thereby, it is possible to suppress moisture from entering the solar cell panel 1 through the slit 12a. The opening 14c and the slit 12a are examples of the “first hole” and the “second hole” in the present invention, respectively.
　図２に示すように、３つの渡りタブ配線１６ａとＹ方向の両端部にそれぞれ配置された一対のタブ配線１６ｅとは、Ｘ１側において、Ｙ方向に延びる同一の直線上に所定の距離を隔てて配置されている。また、４つの渡りタブ配線１６ｂは、Ｘ２側において、Ｙ方向に延びる同一の直線上に所定の距離を隔てて配置されている。これにより、Ｙ方向に延びる複数の渡りタブ配線１６ａおよびタブ配線１６ｅまたは複数の渡りタブ配線１６ｂの各々をＸ方向に並ぶように配置する場合と比べて、複数の渡りタブ配線１６ａおよびタブ配線１６ｅまたは複数の渡りタブ配線１６ｂの各々をＸ方向の端部に配置された太陽電池１３に近接する位置に配置することが可能である。この結果、渡りタブ配線１６ａおよび１６ｂならびにタブ配線１６ｅと太陽電池パネル１の側端部１ｃとの距離を大きくすることが可能である。なお、渡りタブ配線１６ａおよびタブ配線１６ｅは、本発明の「第１配線」の一例である。 As shown in FIG. 2, the three crossover tab wirings 16a and the pair of tab wirings 16e respectively disposed at both ends in the Y direction are separated by a predetermined distance on the same straight line extending in the Y direction on the X1 side. Are arranged. Further, the four transition tab wires 16b are arranged on the same line extending in the Y direction at a predetermined distance on the X2 side. As a result, the plurality of transition tab wirings 16a and tab wirings 16e and tab wirings 16e and tab wirings 16e or the plurality of transition tab wirings 16b extending in the Y direction are arranged in the X direction. Or it is possible to arrange | position each of the several cross tab wiring 16b in the position close | similar to the solar cell 13 arrange | positioned at the edge part of a X direction. As a result, it is possible to increase the distance between the transition tab wires 16a and 16b and the tab wire 16e and the side end portion 1c of the solar cell panel 1. The transition tab wiring 16a and the tab wiring 16e are examples of the “first wiring” in the present invention.
　また、複数の端子ボックス用配線１６ｃの一方端は、Ｘ１側に配置された複数の渡りタブ配線１６ａおよび一対のタブ配線１６ｅの各々と接続されているとともに、複数の端子ボックス用配線１６ｃの他方端は、太陽電池パネル１の下面１ｂ側に固定された端子ボックス３と接続されている。なお、端子ボックス用配線１６ｃは、本発明の「第２配線」の一例である。 One end of each of the plurality of terminal box wires 16c is connected to each of the plurality of transition tab wires 16a and the pair of tab wires 16e arranged on the X1 side, and the other end of the plurality of terminal box wires 16c. The end is connected to the terminal box 3 fixed to the lower surface 1b side of the solar cell panel 1. The terminal box wiring 16c is an example of the “second wiring” in the present invention.
　たとえば、図２に示す３００－３００線に沿った位置における端子ボックス用配線１６ｃの場合、図５に示すように、端子ボックス用配線１６ｃは、Ｘ１側の渡りタブ配線１６ａから下方（Ｚ２側）に延びた後、渡りタブ配線１６ａに隣接する太陽電池１３の下方で、かつ、保護フィルム１４の上方をＸ２側に向かって延びるように配置されている。なお、端子ボックス用配線１６ｃと太陽電池１３との間には、図示しない絶縁シートが配置されており、端子ボックス用配線１６ｃと太陽電池１３との絶縁を確保するように構成されている。 For example, in the case of the terminal box wiring 16c at the position along the line 300-300 shown in FIG. 2, as shown in FIG. 5, the terminal box wiring 16c is located below (Z2 side) from the cross tab wiring 16a on the X1 side. Then, the solar cell 13 adjacent to the crossover tab wiring 16a and the upper part of the protective film 14 are arranged to extend toward the X2 side. An insulating sheet (not shown) is disposed between the terminal box wiring 16c and the solar cell 13, and is configured to ensure insulation between the terminal box wiring 16c and the solar cell 13.
　端子ボックス用配線１６ｃは、所定の距離Ｘ２側に延びた後、略直角に曲がってＹ２側に向かって延びるように配置されている。その後、端子ボックス用配線１６ｃは、Ｙ２側の太陽電池１３の下方で、かつ、保護フィルム１４の上方をＹ２側に向かって延びるように配置されている。 The terminal box wiring 16c is arranged so as to extend toward the Y2 side by bending at a substantially right angle after extending to the predetermined distance X2 side. Thereafter, the terminal box wiring 16c is arranged to extend below the Y2 side solar cell 13 and above the protective film 14 toward the Y2 side.
　そして、端子ボックス用配線１６ｃは、所定の距離Ｙ２側に延びた後、略直角に曲がって再度Ｘ２側に向かって延びるように配置されている。その後、端子ボックス用配線１６ｃは、保護フィルム１４の開口部１４ｃまで延びた後、下方（Ｚ２側）に向かって延び、開口部１４ｃおよびスリット１２ａを通過して太陽電池パネル１の下面１ｂに配置された端子ボックス３と接続されるように配置されている。この結果、端子ボックス用配線１６ｃは、太陽電池１３の下方で、かつ、保護フィルム１４の上方に配置された状態で、Ｘ１側の渡りタブ配線１６ａと端子ボックス３とを開口部１４ｃおよびスリット１２ａを介して接続するように構成されている。 The terminal box wiring 16c is arranged so as to extend toward the predetermined distance Y2 and then bend substantially at a right angle to extend toward the X2 side again. Thereafter, the terminal box wiring 16c extends to the opening 14c of the protective film 14, then extends downward (Z2 side), passes through the opening 14c and the slit 12a, and is disposed on the lower surface 1b of the solar cell panel 1. The terminal box 3 is arranged so as to be connected. As a result, the terminal box wiring 16c is disposed below the solar cell 13 and above the protective film 14, and the X1 side cross tab wiring 16a and the terminal box 3 are connected to the opening 14c and the slit 12a. It is comprised so that it may connect via.
　本実施形態では、上記のように、Ａｌからなる枠体２の収容部２０の内側下面２０ｃを、Ｘ２側に形成された内側面２０ｂの下端から収容部２０の開口２０ｄの開口端２０ｅまで、略同一の傾斜角度を保った状態で下方に向かって傾斜させることによって、枠体２の収容部２０の内側下面２０ｃが水平面状である場合と比べて、金属層１４ａを有する保護フィルム１４と収容部２０の内側下面２０ｃとの距離Ｌ３を大きくすることができるので、保護フィルム１４の絶縁性能が低下した場合であっても、保護フィルム１４の金属層１４ａと枠体２との絶縁を十分に確保することができる。 In the present embodiment, as described above, the inner lower surface 20c of the accommodating portion 20 of the frame body 2 made of Al is extended from the lower end of the inner side surface 20b formed on the X2 side to the opening end 20e of the opening 20d of the accommodating portion 20. As compared with the case where the inner lower surface 20c of the housing portion 20 of the frame body 2 is in a horizontal plane, the protective film 14 having the metal layer 14a and the housing are accommodated by inclining downward while maintaining substantially the same inclination angle. Since the distance L3 with the inner lower surface 20c of the portion 20 can be increased, the insulation between the metal layer 14a of the protective film 14 and the frame 2 is sufficiently achieved even when the insulating performance of the protective film 14 is deteriorated. Can be secured.
　また、本実施形態では、保護フィルム１４の一対の長辺および一対の短辺を、枠体の開口２０ｄの開口端２０ｅから距離Ｌ３離れた太陽電池群３０側（Ｘ２側）に位置させるとともに、枠体２の収容部２０の内側下面２０ｃを、Ｘ２側に形成された内側面２０ｂの下端から収容部２０の開口端２０ｅまで、下方に向かって傾斜させることによって、保護フィルム１４と収容部２０の内側下面２０ｃとの距離Ｌ３をより大きくすることができる。また、保護フィルム１４に一番近接する収容部２０の内側下面２０ｃが下方に傾斜しているので、保護フィルム１４と収容部２０の開口端２０ｅとの距離Ｌ３を確実に大きくすることができる。これらにより、保護フィルム１４の金属層１４ａと収容部２０との絶縁をより十分に確保することができる。 In the present embodiment, the pair of long sides and the pair of short sides of the protective film 14 are positioned on the solar cell group 30 side (X2 side) that is a distance L3 away from the opening end 20e of the opening 20d of the frame, By inclining the inner lower surface 20c of the housing part 20 of the frame body 2 from the lower end of the inner side surface 20b formed on the X2 side to the opening end 20e of the housing part 20, the protective film 14 and the housing part 20 are inclined. The distance L3 from the inner lower surface 20c can be further increased. Moreover, since the inner lower surface 20c of the accommodating part 20 closest to the protective film 14 is inclined downward, the distance L3 between the protective film 14 and the opening end 20e of the accommodating part 20 can be reliably increased. As a result, the insulation between the metal layer 14a of the protective film 14 and the accommodating portion 20 can be more sufficiently ensured.
　また、本実施形態では、内側下面２０ｃを下方に向かって傾斜させることによって、収容部２０の開口端２０ｅの高さ位置を容易に下方（Ｚ２側）に位置させることができるので、保護フィルム１４と内側下面２０ｃとの距離Ｌ３を容易に大きくすることができる。また、内側下面２０ｃを略同一の傾斜角度を保った状態で下方に向かって傾斜させることによって、内側下面２０ｃの傾斜角度を面内で局所的に異ならせる場合よりも、下方に向かって傾斜する内側下面２０ｃを有する枠体２を容易に形成することができる。 Moreover, in this embodiment, since the height position of the opening end 20e of the accommodating part 20 can be easily located below (Z2 side) by inclining the inner lower surface 20c downward, the protective film 14 And the inner lower surface 20c can be easily increased in distance L3. In addition, by inclining the inner lower surface 20c downward while maintaining substantially the same inclination angle, the inner lower surface 20c is inclined downward as compared with the case where the inclination angle of the inner lower surface 20c is locally varied within the surface. The frame body 2 having the inner lower surface 20c can be easily formed.
　また、本実施形態では、保護フィルム１４の端子ボックス３が配置される部分に対応する位置に、平面視において略長方形形状の開口部１４ｃを形成するとともに、保護フィルム１４を充填材１５に覆われた状態で配置することによって、開口部１４ｃを介して、保護フィルム１４の上方に位置する渡りタブ配線１６ａと、保護フィルム１４の下方に位置する端子ボックス３とを端子ボックス用配線１６ｃにより容易に接続することができる。また、保護フィルム１４を覆うように配置された充填材１５によって開口部１４ｃを保護することができるので、開口部１４ｃにおいて保護フィルム１４の絶縁性能が低下するのを抑制することができるとともに、開口部１４ｃを介して、水分が太陽電池１３と渡りタブ配線１６ａおよび１６ｂとに到達するのを抑制することができる。 Moreover, in this embodiment, while forming the substantially rectangular opening part 14c in planar view in the position corresponding to the part by which the terminal box 3 of the protective film 14 is arrange | positioned, the protective film 14 is covered with the filler 15. By arranging in an open state, the crossover tab wiring 16a positioned above the protective film 14 and the terminal box 3 positioned below the protective film 14 can be easily connected to the terminal box wiring 16c through the opening 14c. Can be connected. Moreover, since the opening part 14c can be protected by the filler 15 arrange | positioned so that the protective film 14 may be covered, it can suppress that the insulation performance of the protective film 14 falls in the opening part 14c, and opening. It is possible to suppress moisture from reaching the solar cell 13 and the crossover tab wires 16a and 16b via the portion 14c.
　また、本実施形態では、裏面カバー１２の端子ボックス３が配置される位置に対応する位置で、かつ、開口部１４ｃに対応する位置に、スリット１２ａを形成することによって、開口部１４ｃおよびスリット１２ａを介して、保護フィルム１４の上方に位置する渡りタブ配線１６ａと、保護フィルム１４の下方に位置する端子ボックス３とを端子ボックス用配線１６ｃに容易に接続することができる。加えて、本実施形態では、裏面カバー１２のスリット１２ａの開口面積を、保護フィルム１４の開口部１４ｃの開口面積よりも小さくすることによって、スリット１２ａを介して水分が太陽電池パネル１内に浸入するのを抑制することができるとともに、開口部１４ｃにおいて端子ボックス用配線１６ｃと保護フィルム１４とが接触することをより抑制することができる。 Further, in the present embodiment, the opening 14c and the slit 12a are formed by forming the slit 12a at a position corresponding to the position where the terminal box 3 of the back cover 12 is disposed and at a position corresponding to the opening 14c. Thus, the transition tab wiring 16a positioned above the protective film 14 and the terminal box 3 positioned below the protective film 14 can be easily connected to the terminal box wiring 16c. In addition, in this embodiment, moisture enters the solar cell panel 1 through the slit 12a by making the opening area of the slit 12a of the back cover 12 smaller than the opening area of the opening 14c of the protective film 14. It can suppress that it does, and it can suppress more that the wiring 16c for terminal boxes and the protective film 14 contact in the opening part 14c.
　また、本実施形態では、端子ボックス用配線１６ｃを、太陽電池１３の下方で、かつ、保護フィルム１４の上方に配置された状態で、Ｘ１側の渡りタブ配線１６ａと端子ボックス３とを開口部１４ｃおよびスリット１２ａを介して接続することによって、上方から表面カバー１１および太陽電池１３により端子ボックス用配線１６ｃを保護することができるとともに、下方から保護フィルム１４により端子ボックス用配線１６ｃを保護することができるので、端子ボックス用配線１６ｃを外部環境から確実に保護した状態で、渡りタブ配線１６ａから端子ボックス３まで端子ボックス用配線１６ｃを延ばすことができる。 In the present embodiment, the terminal box wiring 16c is disposed below the solar cell 13 and above the protective film 14, and the transition tab wiring 16a on the X1 side and the terminal box 3 are opened. By connecting via 14c and the slit 12a, the terminal box wiring 16c can be protected by the surface cover 11 and the solar cell 13 from above, and the terminal box wiring 16c can be protected by the protective film 14 from below. Therefore, the terminal box wiring 16c can be extended from the transition tab wiring 16a to the terminal box 3 in a state where the terminal box wiring 16c is reliably protected from the external environment.
　また、本実施形態では、パッキン４の外側の外側下面４ｃを、枠体２の収容部２０の内側下面２０ｃに対応するように、Ｘ２側に形成された外側面４ｂの下端からＸ１側の端部まで、下方に向かって傾斜させることによって、枠体２の収容部２０の内側下面２０ｃとパッキン４の外側下面４ｃとを密着させることができるので、保護フィルム１４と収容部２０の内側下面２０ｃとの距離Ｌ３を保った状態で確実に太陽電池パネル１を保持することができる。 Moreover, in this embodiment, the outer lower surface 4c on the outer side of the packing 4 is the end on the X1 side from the lower end of the outer surface 4b formed on the X2 side so as to correspond to the inner lower surface 20c of the accommodating portion 20 of the frame body 2. Since the inner lower surface 20c of the housing portion 20 of the frame 2 and the outer lower surface 4c of the packing 4 can be brought into close contact with each other by inclining downward to the portion, the protective film 14 and the inner lower surface 20c of the housing portion 20 The solar cell panel 1 can be reliably held in a state where the distance L3 is maintained.
　また、本実施形態では、パッキン４のＸ２側の端部が枠体２の開口２０ｄの開口端２０ｅよりも収容部２０の内側面２０ｂ側（Ｘ１側）に位置するように構成するとともに、保護フィルム１４の一対の長辺および一対の短辺が、パッキン４を介さずに裏面カバー１２と充填材１５を介して、枠体２の開口２０ｄの開口端２０ｅから距離Ｌ３離れた太陽電池群３０側（Ｘ２側）に位置するように構成することによって、パッキン４の外部に露出する部分が増加することに起因してパッキン４が劣化しやすくなることを抑制することができる。また、裏面カバー１２と充填材１５とを介して、保護フィルム１４と枠体２の開口端２０ｅとの距離を大きくすることができるので、保護フィルム１４の金属層１４ａと枠体２との絶縁を確実に確保することができる。 Further, in the present embodiment, the end portion on the X2 side of the packing 4 is configured to be positioned closer to the inner side surface 20b side (X1 side) of the accommodating portion 20 than the opening end 20e of the opening 20d of the frame body 2 is protected. The solar cell group 30 in which a pair of long sides and a pair of short sides of the film 14 are separated by a distance L3 from the opening end 20e of the opening 20d of the frame 2 through the back cover 12 and the filler 15 without the packing 4 interposed therebetween. By being configured to be positioned on the side (X2 side), it is possible to suppress the packing 4 from being easily deteriorated due to an increase in the portion exposed to the outside of the packing 4. Further, since the distance between the protective film 14 and the opening end 20e of the frame body 2 can be increased through the back cover 12 and the filler 15, the insulation between the metal layer 14a of the protective film 14 and the frame body 2 can be achieved. Can be ensured.
　また、本実施形態では、太陽電池パネル１の側端部１ｃに、表面カバー１１と充填材１５との界面Ａと、裏面カバー１２と充填材１５との界面Ｂとを共に覆う界面封止部材１７を配置することによって、枠体２の収容部２０に配置されたパッキン４だけでなく界面封止部材１７によっても、太陽電池パネル１の側端部１ｃにおける充填材１５と表面カバー１１との界面Ａを覆うことができるとともに、裏面カバー１２と充填材１５との界面Ｂを覆うことができる。これにより、太陽電池パネル１の側端部１ｃにおいて充填材１５と表面カバー１１との界面Ａおよび裏面カバー１２と充填材１５との界面Ｂに浸入した水分に起因して絶縁に関する信頼性が低下するのをより抑制することができる。また、太陽電池パネル１の側端部１ｃを起点として、表面カバー１１と充填材１５とが剥がれるのを抑制することができるとともに、裏面カバー１２と充填材１５とが剥がれるのを抑制することができる。 Moreover, in this embodiment, the interface sealing member which covers both the interface A between the front cover 11 and the filler 15 and the interface B between the back cover 12 and the filler 15 on the side end 1 c of the solar cell panel 1. 17, not only the packing 4 disposed in the accommodating portion 20 of the frame 2 but also the interface sealing member 17, the filler 15 and the surface cover 11 at the side end portion 1 c of the solar cell panel 1. The interface A can be covered, and the interface B between the back cover 12 and the filler 15 can be covered. As a result, the reliability of insulation is reduced due to moisture that has entered the interface A between the filler 15 and the front cover 11 and the interface B between the back cover 12 and the filler 15 at the side end 1c of the solar cell panel 1. It can be suppressed more. Moreover, it can suppress that the surface cover 11 and the filler 15 peel from the side edge part 1c of the solar cell panel 1, and can suppress that the back surface cover 12 and the filler 15 peel. it can.
　また、本実施形態では、界面封止部材１７を、パッキン４の収容部４０の中でパッキン４に覆われた状態で、界面ＡおよびＢを覆うように配置することによって、パッキン４によって、界面封止部材１７を保護することができるので、界面ＡおよびＢに水分が浸入することをより抑制することができる。また、表面カバー１１と充填材１５とが剥がれることと、裏面カバー１２と充填材１５とが剥がれることとをより抑制することができる。 Further, in the present embodiment, the interface sealing member 17 is disposed so as to cover the interfaces A and B in a state where the interface sealing member 17 is covered with the packing 4 in the accommodating portion 40 of the packing 4. Since the sealing member 17 can be protected, it is possible to further prevent moisture from entering the interfaces A and B. Moreover, it can suppress more that the surface cover 11 and the filler 15 peel, and that the back surface cover 12 and the filler 15 peel.
　また、本実施形態では、パッキン４のＸ２側の端部のうち、収容部４０よりも下側に位置する端部４ｄのＺ方向の厚みｔ１を、収容部４０よりも上側に位置する端部４ｅのＺ方向の厚みｔ２よりも大きくすることによって、容易に、保護フィルム１４と収容部２０の内側下面２０ｃとの距離Ｌ３を大きくすることができる。 Further, in the present embodiment, among the end portions on the X2 side of the packing 4, the end portion located on the upper side of the housing portion 40 is the thickness t1 in the Z direction of the end portion 4d located on the lower side of the housing portion 40. By making it larger than the thickness t2 of 4e in the Z direction, the distance L3 between the protective film 14 and the inner lower surface 20c of the housing portion 20 can be easily increased.
　また、本実施形態では、枠体２の収容部２０に収容される太陽電池パネル１の側端部１ｃおよびその周辺において、充填材１５の厚みがＸ２側からＸ１側に向かって小さくなるように構成することによって、容易に、パッキン４の収容部４０に太陽電池パネル１の側端部１ｃおよびその周辺を収容することができる。 In the present embodiment, the thickness of the filler 15 is reduced from the X2 side toward the X1 side at the side end portion 1c of the solar cell panel 1 accommodated in the accommodating portion 20 of the frame body 2 and its periphery. By comprising, the side edge part 1c of the solar cell panel 1 and its periphery can be easily accommodated in the accommodating part 40 of the packing 4.
　また、本実施形態では、枠体２の一対の長辺の各々の両端部近傍と、一対の短辺の各々の両端部近傍と、一対の長辺の各々の中央部近傍とに、太陽電池パネル１の上面１ａから外側に水を排出することが可能な水切り部２ａを設けることによって、水切り部２ａを介して、太陽電池パネル１の上面１ａに溜まった水を外部に排出することができるので、受光面（上面１ａ）に汚れがたまることにより性能が低下するのをより抑制することができる。 Further, in the present embodiment, solar cells are provided in the vicinity of both ends of each of the pair of long sides of the frame 2, in the vicinity of both ends of each of the pair of short sides, and in the vicinity of the center of each of the pair of long sides. By providing the draining portion 2a capable of discharging water from the upper surface 1a of the panel 1 to the outside, the water accumulated on the upper surface 1a of the solar cell panel 1 can be discharged to the outside via the draining portion 2a. Therefore, it is possible to further suppress the deterioration in performance due to the accumulation of dirt on the light receiving surface (upper surface 1a).
　なお、今回開示された実施形態は、すべての点で例示であって制限的なものではないと考えられるべきである。本発明の範囲は、上記した実施形態の説明ではなく特許請求の範囲によって示され、さらに特許請求の範囲と均等の意味および範囲内でのすべての変更が含まれる。 In addition, it should be thought that embodiment disclosed this time is an illustration and restrictive at no points. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.
　たとえば、上記実施形態では、枠体２の収容部２０の内側下面２０ｃを、Ｘ２側に形成された内側面２０ｂの下端から収容部２０の開口２０ｄまで、略全領域で下方に向かって傾斜させた例を示したが、本発明はこれに限られない。本発明では、枠体の収容部の内側下面の全体に渡って傾斜させなくてもよい。たとえば、収容部の開口部近傍の内側下面だけ下方に傾斜させてもよい。また、収容部の内側下面を略同一の角度を保った状態で傾斜させる必要はなく、収容部の内側下面を傾斜の角度を任意の領域で異ならせてもよい。 For example, in the above embodiment, the inner lower surface 20c of the housing part 20 of the frame body 2 is inclined downward in substantially the entire region from the lower end of the inner side surface 20b formed on the X2 side to the opening 20d of the housing part 20. However, the present invention is not limited to this. In this invention, it is not necessary to incline over the whole inner lower surface of the accommodating part of a frame. For example, only the inner lower surface in the vicinity of the opening of the housing portion may be inclined downward. Moreover, it is not necessary to incline the inner lower surface of the housing part while maintaining substantially the same angle, and the inner lower surface of the housing part may be made to have different inclination angles in arbitrary regions.
　また、上記実施形態では、保護フィルム１４を、複数の太陽電池１３と渡りタブ配線１６ａおよび１６ｂとタブ配線１６ｅとの下方で、かつ、裏面カバー１２の上方に配置するとともに、保護フィルム１４を覆うように充填材１５を配置した例を示したが、本発明はこれに限られない。本発明では、保護フィルムを覆うように充填材を配置しなくてもよいし、裏面カバーを別途設けなくてもよい。すなわち、保護フィルムが太陽電池パネルの裏面カバーを兼ねるように構成してもよい。この際、保護フィルムの開口部を介して水分が太陽電池パネルに浸入しやすいため、保護フィルムには開口部ではなくスリットを設けるのが好ましい。加えて、上記実施形態では、表面と裏面の両面に電極を有する太陽電池１３を用いたが、これに限らず裏面接合型の太陽電池等を用いることができる。 Moreover, in the said embodiment, while arrange | positioning the protective film 14 under the several solar cell 13, the crossover tab wiring 16a and 16b, and the tab wiring 16e, and the upper surface of the back surface cover 12, it covers the protective film 14. Although the example which has arrange | positioned the filler 15 was shown, this invention is not limited to this. In the present invention, a filler may not be disposed so as to cover the protective film, and a back cover may not be provided separately. That is, you may comprise so that a protective film may serve as the back surface cover of a solar cell panel. At this time, since moisture easily enters the solar cell panel through the opening of the protective film, it is preferable that the protective film is provided with a slit instead of the opening. In addition, in the said embodiment, although the solar cell 13 which has an electrode on both surfaces of a surface and a back surface was used, not only this but a back junction type solar cell etc. can be used.
　また、上記実施形態では、枠体２の収容部２０に、太陽電池パネル１と枠体２との間を埋めるためのパッキン４（封止部材）を配置した例を示したが、本発明はこれに限られない。たとえば、パッキンの代わりにシリコン樹脂などを枠体の収容部に配置してもよい。 Moreover, although the said embodiment showed the example which has arrange | positioned the packing 4 (sealing member) for filling between the solar cell panel 1 and the frame 2 in the accommodating part 20 of the frame 2, this invention showed. It is not limited to this. For example, instead of packing, silicon resin or the like may be disposed in the housing portion of the frame.
　加えて、上記実施形態で用いたパッキン４が保護フィルム１４と枠体２の開口端２０ｅとを結ぶ直線上には位置しないように、パッキン４の外側下面４ｃのＸ方向の長さを短くして構成している例を示したが、本発明はこれに限られない。たとえば、パッキン４が保護フィルム１４と枠体２の開口端２０ｅとを結ぶ直線上に位置するように、パッキン４の外側下面４ｃのＸ方向の長さを長くしてもよい。 In addition, the length in the X direction of the outer lower surface 4c of the packing 4 is shortened so that the packing 4 used in the above embodiment is not positioned on a straight line connecting the protective film 14 and the opening end 20e of the frame 2. However, the present invention is not limited to this. For example, the length in the X direction of the outer lower surface 4c of the packing 4 may be increased so that the packing 4 is positioned on a straight line connecting the protective film 14 and the opening end 20e of the frame 2.
　また、上記実施形態では、太陽電池パネル１の側端部１ｃに、表面カバー１１と充填材１５との界面Ａと、裏面カバー１２と充填材１５との界面Ｂとを共に覆う界面封止部材１７を、パッキン４（封止部材）とは別途配置した例を示したが、本発明はこれに限られない。本発明では、太陽電池パネルの側端部に界面封止部材を設けなくてもよい。また、界面封止部材を界面Ａまたは界面Ｂのいずれか一方のみを覆うように配置してもよい。 Moreover, in the said embodiment, the interface sealing member which covers both the interface A of the surface cover 11 and the filler 15 and the interface B of the back cover 12 and the filler 15 in the side edge part 1c of the solar cell panel 1 is shown. Although the example which has arrange | positioned 17 separately from the packing 4 (sealing member) was shown, this invention is not limited to this. In this invention, it is not necessary to provide an interface sealing member in the side edge part of a solar cell panel. Moreover, you may arrange | position an interface sealing member so that only either the interface A or the interface B may be covered.
　また、上記実施形態では、本発明の「シート部材」としての保護フィルム１４を、Ａｌ箔などの金属箔からなる金属層１４ａと、金属層１４ａの表面および裏面にそれぞれ配置されたＰＶＦやＰＥＴなどの樹脂シートからなる一対の絶縁シート１４ｂとから構成した例を示したが、本発明はこれに限られない。本発明では、シート部材としての保護フィルムを金属層のみからなるように構成してもよい。また、保護フィルムの金属層をＺｎやＦｅなどの金属箔からなるように構成してもよいし、絶縁シートをＰＰＳ（ポリフェニレンスルファイド）などの樹脂シートからなるように構成してもよい。 Moreover, in the said embodiment, the protective film 14 as a "sheet member" of the present invention is a metal layer 14a made of a metal foil such as an Al foil, and PVF, PET, etc. respectively disposed on the front and back surfaces of the metal layer 14a. Although the example comprised from a pair of insulating sheet 14b which consists of this resin sheet was shown, this invention is not limited to this. In this invention, you may comprise so that the protective film as a sheet | seat member may consist only of a metal layer. Further, the metal layer of the protective film may be made of a metal foil such as Zn or Fe, and the insulating sheet may be made of a resin sheet such as PPS (polyphenylene sulfide).
　また、上記実施形態では、界面封止部材１７を、太陽電池パネル１を枠体２（パッキン４）に収容する前に、太陽電池パネル１の側端部１ｃに塗布することによって界面ＡおよびＢを覆うように形成した例を示したが、本発明はこれに限られない。本発明では、界面封止部材を塗布によって形成する場合に限られず、たとえば、テープ状の界面封止部材を界面ＡおよびＢを覆うように配置してもよい。 Moreover, in the said embodiment, before accommodating the solar cell panel 1 in the frame 2 (packing 4), the interface sealing member 17 is apply | coated to the side edge part 1c of the solar cell panel 1, and interface A and B is carried out. However, the present invention is not limited to this. In this invention, it is not restricted to the case where an interface sealing member is formed by application | coating, For example, you may arrange | position a tape-shaped interface sealing member so that the interfaces A and B may be covered.

Claims (18)

  1. 　複数の太陽電池からなる太陽電池群と、金属層を有し、前記太陽電池群の下方に配置されたシート部材とを含む太陽電池パネルと、
    　前記太陽電池パネルの側端部が収容される収容部を含む枠体とを備え、
    　前記枠体の収容部の内側下面は、少なくとも前記太陽電池群側に向かって下方に傾斜する面を有する、太陽電池モジュール。     A solar cell panel including a solar cell group composed of a plurality of solar cells, and a sheet member having a metal layer and disposed below the solar cell group;
    A frame including an accommodating portion in which a side end portion of the solar cell panel is accommodated,
    The inner lower surface of the housing part of the frame body is a solar cell module having a surface inclined downward at least toward the solar cell group side.
  2. 　前記収容部は、前記太陽電池群側に開口する凹部を含み、
    　前記シート部材の前記収容部側の側端部は、前記収容部の凹部の開口端よりも前記太陽電池群側に位置しているとともに、前記収容部の凹部の内側下面は、少なくとも前記凹部の開口端周辺において下方に傾斜している、請求項１に記載の太陽電池モジュール。     The accommodating portion includes a recess that opens to the solar cell group side,
    The side end portion of the sheet member on the housing portion side is located closer to the solar cell group side than the opening end of the recess portion of the housing portion, and the inner lower surface of the recess portion of the housing portion is at least of the recess portion. The solar cell module according to claim 1, wherein the solar cell module is inclined downward around the open end.
  3. 　前記収容部の凹部の内側下面は、前記凹部の開口端とは反対側の端部から前記凹部の開口端に向かって略全域で下方に傾斜している、請求項２に記載の太陽電池モジュール。 3. The solar cell module according to claim 2, wherein an inner lower surface of the concave portion of the housing portion is inclined downward substantially over the entire region from an end portion opposite to the opening end of the concave portion toward the opening end of the concave portion. .
  4. 　前記収容部の凹部の内側下面は、前記凹部の開口端とは反対側の端部から前記凹部の開口端に向かって略同一の傾斜角度で下方に傾斜している、請求項３に記載の太陽電池モジュール。 The inner lower surface of the concave portion of the housing portion is inclined downward at substantially the same inclination angle from an end portion opposite to the opening end of the concave portion toward the opening end of the concave portion. Solar cell module.
  5. 　前記枠体は、平面視において矩形状に形成されており、
    　前記収容部の凹部は、前記矩形状の枠体の内周面に沿って連続する溝状に形成されており、
    　前記連続する溝状の凹部の内側下面は、前記矩形状の枠体の内側に向かって下方に傾斜する面を有する、請求項２に記載の太陽電池モジュール。     The frame is formed in a rectangular shape in plan view,
    The concave portion of the housing portion is formed in a groove shape continuous along the inner peripheral surface of the rectangular frame body,
    The solar cell module according to claim 2, wherein an inner lower surface of the continuous groove-shaped recess has a surface inclined downward toward the inner side of the rectangular frame.
  6. 　前記太陽電池パネルの下方に配置された端子ボックスをさらに備え、
    　前記太陽電池パネルは、少なくとも前記シート部材を挟み込むように配置された樹脂部材と、前記シート部材の上方で前記太陽電池群に接続された第１配線と、前記端子ボックスと前記第１配線とを接続する第２配線とをさらに含み、
    　前記シート部材は、前記第１配線と前記端子ボックスとを前記第２配線によって接続するための開口部を有する、請求項１に記載の太陽電池モジュール。     A terminal box arranged below the solar cell panel;
    The solar cell panel includes at least a resin member disposed so as to sandwich the sheet member, a first wiring connected to the solar cell group above the sheet member, the terminal box, and the first wiring. A second wiring to be connected,
    The solar cell module according to claim 1, wherein the sheet member has an opening for connecting the first wiring and the terminal box by the second wiring.
  7. 　前記シート部材の開口部は、前記端子ボックスが配置される位置に対応する位置に形成された第１穴部を有する、請求項６に記載の太陽電池モジュール。 The solar cell module according to claim 6, wherein the opening of the sheet member has a first hole formed at a position corresponding to a position where the terminal box is disposed.
  8. 　前記太陽電池パネルは、前記樹脂部材の裏面上に配置された裏面カバー部をさらに含み、
    　前記裏面カバー部は、前記シート部材の第１穴部に対応する位置に形成され、前記第１配線と前記端子ボックスとを前記第２配線によって接続するための第２穴部を有する、請求項７に記載の太陽電池モジュール。     The solar cell panel further includes a back cover portion disposed on the back surface of the resin member,
    The back cover portion is formed at a position corresponding to the first hole portion of the sheet member, and has a second hole portion for connecting the first wiring and the terminal box by the second wiring. 8. The solar cell module according to 7.
  9. 　前記裏面カバー部の第２穴部の開口面積は、前記シート部材の第１穴部の開口面積よりも小さい、請求項８に記載の太陽電池モジュール。 The solar cell module according to claim 8, wherein an opening area of the second hole portion of the back surface cover portion is smaller than an opening area of the first hole portion of the sheet member.
  10. 　前記第２配線は、前記複数の太陽電池の下方で、かつ、前記シート部材の上方を通るように、前記第１配線との接続部分から前記シート部材の第１穴部まで延びているとともに、前記第１穴部および前記第２穴部を介して前記端子ボックスに接続されている、請求項８に記載の太陽電池モジュール。 The second wiring extends from the connection portion with the first wiring to the first hole of the sheet member so as to pass below the plurality of solar cells and above the sheet member. The solar cell module according to claim 8, wherein the solar cell module is connected to the terminal box via the first hole and the second hole.
  11. 　前記太陽電池パネルと前記枠体との間を埋めるように前記枠体の収容部に配置された封止部材をさらに備え、
    　前記封止部材の外側下面は、前記太陽電池群側に向かって下方に傾斜する前記収容部の内側下面の面に対応するように前記太陽電池群側に向かって下方に傾斜する面を有する、請求項１に記載の太陽電池モジュール。     A sealing member disposed in the housing portion of the frame body so as to fill a space between the solar cell panel and the frame body;
    The outer lower surface of the sealing member has a surface inclined downward toward the solar cell group side so as to correspond to the surface of the inner lower surface of the housing portion inclined downward toward the solar cell group side. The solar cell module according to claim 1.
  12. 　前記封止部材の前記太陽電池群側の端部は、前記収容部の内側下面の前記太陽電池群側の端部よりも前記太陽電池群とは反対側に位置するように構成されており、
    　前記太陽電池パネルは、少なくとも前記シート部材を挟み込むように配置された樹脂部材と、前記樹脂部材の裏面上に配置された裏面カバー部とをさらに含み、
    　前記シート部材の前記収容部側の側端部と前記収容部の内側下面の前記太陽電池群側の端部とは、前記封止部材を介さずに前記樹脂部材と前記裏面カバー部とを介して配置されている、請求項１１に記載の太陽電池モジュール。     The end portion on the solar cell group side of the sealing member is configured to be located on the opposite side of the solar cell group from the end portion on the solar cell group side of the inner lower surface of the housing portion,
    The solar cell panel further includes a resin member disposed so as to sandwich at least the sheet member, and a back cover portion disposed on the back surface of the resin member,
    The side end portion of the sheet member on the housing portion side and the end portion on the solar cell group side of the inner lower surface of the housing portion do not go through the sealing member but the resin member and the back cover portion. The solar cell module according to claim 11 arranged.
  13. 　前記太陽電池パネルと前記枠体との間を埋めるように前記枠体の収容部に配置された封止部材をさらに備え、
    　前記太陽電池パネルは、前記シート部材を挟み込むように配置されるとともに、前記太陽電池群が埋め込まれる樹脂部材と、前記樹脂部材の表面上に配置された表面カバー部と、前記封止部材の内側に位置するとともに、前記封止部材とは別個に設けられた界面封止部材とをさらに含み、
    　前記界面封止部材は、前記太陽電池パネルの側端部における前記樹脂部材と前記表面カバー部との界面を少なくとも覆うように配置されている、請求項１に記載の太陽電池モジュール。     A sealing member disposed in the housing portion of the frame body so as to fill a space between the solar cell panel and the frame body;
    The solar cell panel is disposed so as to sandwich the sheet member, and a resin member in which the solar cell group is embedded, a surface cover portion disposed on the surface of the resin member, and an inner side of the sealing member And an interface sealing member provided separately from the sealing member,
    The solar cell module according to claim 1, wherein the interface sealing member is disposed so as to cover at least an interface between the resin member and the surface cover portion at a side end portion of the solar cell panel.
  14. 　前記太陽電池パネルは、前記樹脂部材の裏面上に配置された裏面カバー部をさらに含み、
    　前記界面封止部材は、前記封止部材の内側において、前記太陽電池パネルの側端部における前記樹脂部材と前記表面カバー部との界面と、前記太陽電池パネルの側端部における前記樹脂部材と前記裏面カバー部との界面とを覆うように配置されている、請求項１３に記載の太陽電池モジュール。     The solar cell panel further includes a back cover portion disposed on the back surface of the resin member,
    The interface sealing member includes an inner surface of the sealing member, an interface between the resin member and the surface cover portion at a side end portion of the solar cell panel, and the resin member at a side end portion of the solar cell panel. The solar cell module of Claim 13 arrange | positioned so that the interface with the said back surface cover part may be covered.
  15. 　前記封止部材は、前記界面封止部材を覆うように配置されている、請求項１３に記載の太陽電池モジュール。 The solar cell module according to claim 13, wherein the sealing member is disposed so as to cover the interface sealing member.
  16. 　前記太陽電池パネルと前記枠体との間を埋めるように前記枠体の収容部に配置された封止部材をさらに備え、
    　前記封止部材の前記太陽電池群側の下端部の厚みは、前記封止部材の前記太陽電池群側の上端部の厚みよりも大きくなるように構成されている、請求項１に記載の太陽電池モジュール。     A sealing member disposed in the housing portion of the frame body so as to fill a space between the solar cell panel and the frame body;
    2. The sun according to claim 1, wherein a thickness of a lower end portion of the sealing member on the solar cell group side is configured to be larger than a thickness of an upper end portion of the sealing member on the solar cell group side. Battery module.
  17. 　前記太陽電池パネルは、前記シート部材を挟み込むように配置されるとともに、前記太陽電池群が埋め込まれる樹脂部材をさらに含み、
    　前記収容部に収容される部分において、前記樹脂部材の厚みは、前記太陽電池パネルの側端部に向かって小さくなるように構成されている、請求項１に記載の太陽電池モジュール。     The solar cell panel further includes a resin member disposed so as to sandwich the sheet member and in which the solar cell group is embedded,
    2. The solar cell module according to claim 1, wherein a thickness of the resin member is configured to become smaller toward a side end portion of the solar cell panel in a portion accommodated in the accommodating portion.
  18. 　前記枠体は、前記太陽電池パネルの上面から水を外部に排出するための切り欠き部を含む、請求項１に記載の太陽電池モジュール。 The solar cell module according to claim 1, wherein the frame includes a notch for discharging water from an upper surface of the solar cell panel to the outside.
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