WO2021161657A1 - 太陽電池モジュールの設置方法および建造物 - Google Patents

太陽電池モジュールの設置方法および建造物 Download PDF

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Publication number
WO2021161657A1
WO2021161657A1 PCT/JP2020/047391 JP2020047391W WO2021161657A1 WO 2021161657 A1 WO2021161657 A1 WO 2021161657A1 JP 2020047391 W JP2020047391 W JP 2020047391W WO 2021161657 A1 WO2021161657 A1 WO 2021161657A1
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WO
WIPO (PCT)
Prior art keywords
solar cell
cell module
wall
building
power receiving
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Application number
PCT/JP2020/047391
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English (en)
French (fr)
Japanese (ja)
Inventor
祐介 宮道
衛郷 ▲高▼橋
太佑 西村
敬太 黒須
求己 芝原
紳之介 牛尾
翔英 佐藤
高橋　雅也
Original Assignee
京セラ株式会社
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 京セラ株式会社 filed Critical 京セラ株式会社
Priority to JP2022500248A priority Critical patent/JP7483850B2/ja
Publication of WO2021161657A1 publication Critical patent/WO2021161657A1/ja
Priority to JP2024073894A priority patent/JP2024096287A/ja

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
    • E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
    • 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
    • H02S20/20—Supporting structures directly fixed to an immovable object
    • H02S20/22—Supporting structures directly fixed to an immovable object specially adapted for buildings
    • H02S20/26—Building materials integrated with PV modules, e.g. façade elements
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F19/00—Integrated devices, or assemblies of multiple devices, comprising at least one photovoltaic cell covered by group H10F10/00, e.g. photovoltaic modules
    • H10F19/80—Encapsulations or containers for integrated devices, or assemblies of multiple devices, having photovoltaic cells
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/10—Photovoltaic [PV]
    • 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

  • This disclosure relates to the installation method of the solar cell module and the building.
  • the installation method of the solar cell module and the building will be disclosed.
  • One aspect of the installation method of the solar cell module has a step (a) and a step (b).
  • step (a) a building having an outer wall portion is prepared, and a solar cell module having a front surface and a back surface located on the opposite side of the front surface is prepared.
  • step (b) the solar cell module is held by the holding portion so that the back surface is located along the outer wall surface of the outer wall portion.
  • One aspect of the building is provided with an outer wall portion, a solar cell module, and a holding portion.
  • the solar cell module has a front surface and a back surface located on the opposite side of the front surface.
  • the holding portion is in a state of holding the solar cell module so that the back surface is positioned along the outer wall surface of the outer wall portion.
  • One aspect of a building is to hold a solar cell module having an outer wall portion and a front surface and a back surface located on the opposite side of the front surface so that the back surface is located along the outer wall surface of the outer wall portion. It is equipped with a holding part for.
  • FIG. 1 is a flow chart showing an example of a flow of a method of installing a solar cell module according to each embodiment.
  • FIG. 2A is a perspective view schematically showing an example of how the buildings and solar cell modules according to the first to fifth embodiments are prepared.
  • FIG. 2B is a perspective view schematically showing an example of how the solar cell modules according to the first to fifth embodiments are held.
  • FIG. 3A is a cross-sectional view schematically showing an example of how the buildings and solar cell modules according to the first to fifth embodiments are prepared.
  • FIG. 3B is a cross-sectional view schematically showing an example of how the solar cell modules according to the first to fifth embodiments are held along the outer wall surface.
  • FIG. 4A is a plan view schematically showing an example of the appearance of the solar cell modules according to the first to fifth embodiments when viewed in a plan view.
  • FIG. 4B is a diagram schematically showing an example of a virtual cut surface along the IVb-IVb line of the solar cell module of FIG. 4A.
  • FIG. 5A is a diagram schematically showing an example of a structure when the first element surface of the solar cell element according to the first to sixth embodiments is viewed in a plan view.
  • FIG. 5B is a diagram schematically showing an example of a structure when the second element surface of the solar cell element according to the first to sixth embodiments is viewed in a plan view.
  • FIG. 6 (a) to 6 (c) are diagrams schematically illustrating a state of a cross section during manufacturing of the solar cell module according to the first to sixth embodiments, respectively.
  • FIG. 7 (a) is a diagram schematically showing a virtual cut surface at a position corresponding to the virtual cut surface of FIG. 4 (b) in the solar cell module according to one modification.
  • FIG. 7 (b) is a diagram schematically showing a virtual cut surface at a position corresponding to the virtual cut surface of FIG. 4 (b) in the solar cell module according to another modified example.
  • FIG. 7 (c) is a diagram schematically showing a virtual cut surface at a position corresponding to the virtual cut surface of FIG. 4 (b) in the solar cell module according to another modified example.
  • FIG. 7 (a) is a diagram schematically showing a virtual cut surface at a position corresponding to the virtual cut surface of FIG. 4 (b) in the solar cell module according to another modified example.
  • FIG. 7 (a) is a diagram schematically showing
  • FIG. 8A is a front view schematically showing an example of a solar cell module held along the outer wall surface by the holding portion according to the first embodiment.
  • FIG. 8B is a diagram schematically showing an example of a virtual cut surface along the line VIIIb-VIIIb of the outer wall portion, the solar cell module, and the holding portion of FIG. 8A.
  • FIG. 8C is a diagram schematically showing a modification of a virtual cut surface along the line VIIIb-VIIIb of the outer wall portion, the solar cell module, and the holding portion of FIG. 8A.
  • FIG. 9A is a front view schematically showing an example of how a building is prepared.
  • FIG. 9B is a diagram schematically showing an example of a virtual cut surface along the IXb-IXb line of the building of FIG.
  • FIG. 9 (c) is an example of a virtual cut surface at a position corresponding to the virtual cut surface along the IXb-IXb line of FIG. 9 (a) in the building, the solar cell module, and the holding portion. It is a figure which shows typically.
  • FIG. 9 (d) is a deformation of the virtual cut surface at a position corresponding to the virtual cut surface along the IXb-IXb line of FIG. 9 (a) in the building, the solar cell module, and the holding portion. It is a figure which shows the example schematically.
  • FIG. 10A is a front view schematically showing an example of how a building is prepared.
  • FIG. 10A is a front view schematically showing an example of how a building is prepared.
  • FIG. 10 (b) is a diagram schematically showing an example of a virtual cut surface along the Xb-Xb line of the building of FIG. 10 (a).
  • FIG. 10 (c) is an example of a virtual cut surface at a position corresponding to the virtual cut surface along the Xb-Xb line of FIG. 10 (a) in the building, the solar cell module, and the holding portion. It is a figure which shows typically.
  • FIG. 10 (d) is a deformation of the virtual cut surface at a position corresponding to the virtual cut surface along the Xb-Xb line of FIG. 10 (a) in the building, the solar cell module, and the holding portion. It is a figure which shows the example schematically.
  • FIG. 10 (d) is a deformation of the virtual cut surface at a position corresponding to the virtual cut surface along the Xb-Xb line of FIG. 10 (a) in the building, the solar cell module, and the holding portion. It is a figure which shows the example schematically.
  • FIG. 11A is a front view schematically showing an example of how a building is prepared.
  • FIG. 11B is a diagram schematically showing an example of a virtual cut surface along the XIb-XIb line of the building of FIG. 11A.
  • FIG. 11 (c) is an example of a virtual cut surface at a position corresponding to the virtual cut surface along the XIb-XIb line of FIG. 11 (a) in the building, the solar cell module, and the holding portion. It is a figure which shows typically.
  • FIG. 11 (d) is a deformation of the virtual cut surface at a position corresponding to the virtual cut surface along the XIb-XIb line of FIG. 11 (a) in the building, the solar cell module, and the holding portion.
  • FIG. 12A is a front view schematically showing an example of how a building is prepared.
  • FIG. 12 (b) is a diagram schematically showing an example of a virtual cut surface along the line XIIb-XIIb of the building of FIG. 12 (a).
  • FIG. 12 (c) is an example of a virtual cut surface at a position corresponding to the virtual cut surface along the XIIb-XIIb line of FIG. 12 (a) in the building, the solar cell module, and the holding portion. It is a figure which shows typically.
  • FIG. 12 (d) is a deformation of the virtual cut surface at a position corresponding to the virtual cut surface along the XIIb-XIIb line of FIG.
  • FIG. 13A is a front view schematically showing an example of the solar cell module held along the outer wall surface by the holding portion.
  • FIG. 13B is a diagram schematically showing an example of a virtual cut surface along the XIIIb-XIIIb line of the outer wall portion, the solar cell module, and the holding portion of FIG. 13A.
  • FIG. 13 (c) is a diagram schematically showing a modified example of a virtual cut surface along the XIIIb-XIIIb line of the outer wall portion, the solar cell module, and the holding portion of FIG. 13 (a).
  • FIG. 13A is a front view schematically showing an example of the solar cell module held along the outer wall surface by the holding portion.
  • FIG. 13B is a diagram schematically showing an example of a virtual cut surface along the XIIIb-XIIIb line of the outer wall portion, the solar cell module, and the holding portion of FIG. 13A.
  • FIG. 13 (c) is a diagram schematically showing a modified example of a virtual cut surface along the
  • FIG. 14A is a front view schematically showing an example of a solar cell module held along the outer wall surface by the holding portion according to the second embodiment.
  • FIG. 14B is a diagram schematically showing an example of a virtual cut surface along the XIVb-XIVb line of the outer wall portion, the solar cell module, and the holding portion of FIG. 14A.
  • FIG. 15A is a front view schematically showing an example of how the first adhesive is attached on the outer wall surface.
  • FIG. 15B is a front view schematically showing an example of how the solar cell module is held by the first adhesive on the outer wall surface.
  • 15C is a front view schematically showing an example of a state in which the second adhesive material has flowed into the space between the outer wall surface, the first adhesive material, and the back surface of the solar cell module.
  • 16 (a) is a cross-sectional view schematically showing an example of a cross section of the outer wall portion and the first adhesive of FIG. 15 (a) along the XVIa-XVIa line.
  • FIG. 16B is a cross-sectional view schematically showing an example of a cross section of the outer wall portion, the first adhesive material, and the solar cell module of FIG. 15B along the XVIb-XVIb line.
  • FIG. 16 (c) is a cross-sectional view schematically showing an example of a cross section of the outer wall portion, the first adhesive material, the second adhesive material, and the solar cell module of FIG. 15 (c) along the XVIc-XVIc line.
  • FIG. 17A is a cross-sectional view schematically showing an example of a cross section of an outer wall portion provided with a holding portion according to the third embodiment.
  • FIG. 17B is a cross-sectional view schematically showing an example of a state in which the solar cell module is being held along the outer wall surface by the holding portion according to the third embodiment.
  • FIG. 17C is a cross-sectional view schematically showing an example of how the solar cell module is held along the outer wall surface by the holding portion according to the third embodiment.
  • FIG. 17A is a cross-sectional view schematically showing an example of a cross section of an outer wall portion provided with a holding portion according to the third embodiment.
  • FIG. 17B is a cross-sectional view schematically showing an example
  • FIG. 18 is a front view schematically showing an example of how the solar cell module is held along the outer wall surface by the holding portion according to the third embodiment.
  • FIG. 19A is a front view schematically showing an example of an outer wall portion provided with the holding portion according to the third embodiment.
  • FIG. 19B is a cross-sectional view schematically showing an example of a cross section of the outer wall portion and the holding portion of FIG. 19A along the XIXb-XIXb line.
  • FIG. 20A is a front view schematically showing an example of how the solar cell module is held by the holding portion according to the third embodiment.
  • FIG. 20 (b) is a cross-sectional view schematically showing an example of a cross section of the outer wall portion, the holding portion, and the solar cell module of FIG.
  • FIG. 21A is a front view schematically showing an example of an outer wall portion provided with the holding portion according to the third embodiment.
  • 21 (b) is a cross-sectional view schematically showing an example of a cross section of the outer wall portion and the holding portion of FIG. 21 (a) along the XXIb-XXIb line.
  • FIG. 22A is a front view schematically showing an example of how the solar cell module is held by the holding portion according to the third embodiment.
  • FIG. 22B is a cross-sectional view schematically showing an example of a cross section of the outer wall portion, the holding portion, and the solar cell module of FIG. 22A along the line XXIIb-XXIIb.
  • FIG. 21A is a front view schematically showing an example of an outer wall portion provided with the holding portion according to the third embodiment.
  • 21 (b) is a cross-sectional view schematically showing an example of a cross section of the outer wall portion and the holding portion of FIG. 21 (a) along the X
  • FIG. 23A is a front view schematically showing an example of the holding portion and the building according to the fourth embodiment.
  • FIG. 23 (b) is a cross-sectional view schematically showing an example of a cross section along the XZ plane of the holding portion and the building of FIG. 23 (a).
  • FIG. 23C is a diagram schematically showing an example of the structure of the clamp portion included in the holding portion according to the fourth embodiment.
  • FIG. 24A is a front view schematically showing an example of how the solar cell module is held by the holding portion according to the fourth embodiment.
  • FIG. 24B is a cross-sectional view schematically showing an example of a cross section of the outer wall portion, the holding portion, and the solar cell module of FIG. 24A along the XZ plane.
  • FIG. 24A is a front view schematically showing an example of the holding portion and the building according to the fourth embodiment.
  • FIG. 23 (b) is a cross-sectional view schematically showing an example of a cross section along the XZ plane of the
  • FIG. 25A is a front view schematically showing an outer wall portion before the solar cell module according to the first example of the fifth embodiment is connected.
  • FIG. 25 (b) is a cross-sectional view schematically showing an example of a cross section of the outer wall portion of FIG. 25 (a) and the solar cell module along the line XXVb-XXVb.
  • FIG. 26A is a front view schematically showing the connected outer wall portion and the solar cell module according to the first example of the fifth embodiment.
  • FIG. 26B is a cross-sectional view schematically showing an example of a cross section of the outer wall portion and the solar cell module after the connection shown in FIG. 26A along the line XXVIb-XXVIb.
  • FIG. 28 (a) shows a cross section of the outer wall portion and the solar cell module before the solar cell module according to the second example of the fifth embodiment is connected along the line XXVb-XXVb of FIG. 25 (a). It is sectional drawing which shows typically the cross section at a corresponding position.
  • FIG. 28 (b) shows a cross section of the connected outer wall portion and the solar cell module according to the second example of the fifth embodiment at a position corresponding to the cross section along the line XXVIb-XXVIb of FIG. 26 (a). It is sectional drawing which shows typically.
  • FIG. 28 (b) shows a cross section of the connected outer wall portion and the solar cell module according to the second example of the fifth embodiment at a position corresponding to the cross section along the line XXVIb-XXVIb of FIG. 26 (a). It is sectional drawing which shows typically.
  • FIG. 28 (b) shows a cross section of the connected outer wall portion and the solar cell module according to the second example of the fifth embodiment at
  • FIG. 29 (a) shows a cross section of the outer wall portion and the solar cell module before the solar cell module according to the third example of the fifth embodiment is connected along the line XXVb-XXVb of FIG. 25 (a). It is sectional drawing which shows typically the cross section at a corresponding position.
  • FIG. 29 (b) shows a cross section of the connected outer wall portion and the solar cell module according to the third example of the fifth embodiment at a position corresponding to the cross section along the line XXVIb-XXVIb of FIG. 26 (a). It is sectional drawing which shows typically.
  • FIG. 30A is a front view schematically showing an outer wall portion before the solar cell module according to the fourth example of the fifth embodiment is installed.
  • FIG. 30A is a front view schematically showing an outer wall portion before the solar cell module according to the fourth example of the fifth embodiment is installed.
  • FIG. 30 (b) is a cross-sectional view schematically showing an example of a cross section of the outer wall portion of FIG. 30 (a) and the solar cell module along the XXXb-XXXb lines.
  • FIG. 31A is a front view schematically showing the outer wall portion and the solar cell module after the solar cell module is installed along the outer wall portion according to the fourth example of the fifth embodiment.
  • FIG. 31 (b) is a cross-sectional view schematically showing an example of a cross section of the outer wall portion of FIG. 31 (a) and the solar cell module along the line XXXIb-XXXIb.
  • FIG. 32A is a front view schematically showing an outer wall portion before the solar cell module according to the fifth example of the fifth embodiment is connected.
  • FIG. 32 (b) is a cross-sectional view schematically showing an example of a cross section of the outer wall surface, the solar cell module, and the connecting member along the line XXXIIb-XXXIIb of FIG. 32 (a).
  • FIG. 33A is a front view schematically showing the outer wall portion, the solar cell module, and the connecting member after the solar cell module is installed along the outer wall portion according to the fifth example of the fifth embodiment.
  • FIG. 33 (b) is a cross-sectional view schematically showing an example of a cross section of the outer wall portion, the solar cell module, and the connecting member of FIG. 33 (a) along the line XXXIIIb-XXXIIIb.
  • FIG. 34A is a perspective view schematically showing an example of how the building and the solar cell module according to the sixth embodiment are prepared.
  • FIG. 34B is a perspective view schematically showing an example of how the solar cell module according to the sixth embodiment is held.
  • FIG. 35A is a diagram schematically showing an example of a plurality of solar cell modules before being connected to each other according to the first connection mode of the sixth embodiment.
  • FIG. 35B is a diagram schematically showing an example of a plurality of interconnected solar cell modules according to the first connection mode of the sixth embodiment.
  • FIG. 36A is a diagram schematically showing an example of a plurality of solar cell modules before being connected to each other according to the second connection mode of the sixth embodiment.
  • FIG. 36B is a diagram schematically showing an example of a plurality of interconnected solar cell modules according to the second connection mode of the sixth embodiment.
  • FIG. 37A is a rear view schematically showing an example of a plurality of solar cell modules before being connected to each other according to the third connection mode of the sixth embodiment.
  • FIG. 37B is a rear view schematically showing an example of a plurality of solar cell modules in the process of being connected to each other according to the third connection mode of the sixth embodiment.
  • FIG. 37 (c) is a rear view schematically showing an example of a plurality of interconnected solar cell modules according to the third connection mode of the sixth embodiment.
  • FIG. 37A is a rear view schematically showing an example of a plurality of solar cell modules before being connected to each other according to the third connection mode of the sixth embodiment.
  • FIG. 37B is a rear view schematically showing an example of a plurality of solar cell modules in the process of being connected to each other according to the third connection mode of the sixth embodiment.
  • FIG. 38 (a) is a bottom view schematically showing an example of a plurality of solar cell modules before being connected to each other according to the third connection mode of the sixth embodiment.
  • FIG. 38 (b) is a bottom view schematically showing an example of a plurality of solar cell modules in the process of being connected to each other according to the third connection mode of the sixth embodiment.
  • FIG. 38 (c) is a bottom view schematically showing an example of a plurality of interconnected solar cell modules according to the third connection mode of the sixth embodiment.
  • FIG. 39 (a) is a front view schematically showing an example of a plurality of solar cell modules before being connected to each other according to the fourth connection mode of the sixth embodiment.
  • FIG. 39B is a front view schematically showing an example of a plurality of solar cell modules in the process of being connected to each other according to the fourth connection mode of the sixth embodiment.
  • FIG. 39 (c) is a front view schematically showing an example of a plurality of interconnected solar cell modules according to the fourth connection mode of the sixth embodiment.
  • FIG. 40A is a bottom view schematically showing an example of a plurality of solar cell modules before being connected to each other according to the fourth connection mode of the sixth embodiment.
  • FIG. 40B is a bottom view schematically showing an example of a plurality of solar cell modules in the process of being connected to each other according to the fourth connection mode of the sixth embodiment.
  • FIG. 40A is a bottom view schematically showing an example of a plurality of solar cell modules before being connected to each other according to the fourth connection mode of the sixth embodiment.
  • FIG. 40B is a bottom view schematically showing an example of a plurality of solar cell modules in the process of being connected to each other according to the fourth connection mode of the
  • FIG. 40 (c) is a bottom view schematically showing an example of a plurality of interconnected solar cell modules according to the fourth connection mode of the sixth embodiment.
  • FIG. 41 (a) is a front view schematically showing an example of a plurality of solar cell modules before being connected to each other according to the fifth connection mode of the sixth embodiment.
  • FIG. 41B is a front view schematically showing an example of a plurality of interconnected solar cell modules according to the fifth connection mode of the sixth embodiment.
  • FIG. 42A is a plan view schematically showing an example of a plurality of solar cell modules before being connected to each other according to the fifth connection mode of the sixth embodiment.
  • FIG. 42B is a plan view schematically showing an example of a plurality of interconnected solar cell modules according to the fifth connection mode of the sixth embodiment.
  • the solar cell panel (also called a solar cell module) is attached to the balcony via a gantry frame in a state of being tilted with respect to a horizontal plane.
  • the transparent front member also referred to as the front member
  • the front member that protects the front surface of the solar cell module as the light receiving surface.
  • the rigidity of the front member decreases, so that the rigidity of the solar cell module decreases.
  • the wind wraps around the back surface side of the solar cell module that is inclined with respect to the horizontal plane as the non-light receiving surface, so that the solar cell module is likely to vibrate and bend.
  • the solar cell element also referred to as a solar cell
  • the solar cell module is likely to be cracked, and the output characteristics of the solar cell module are likely to be deteriorated.
  • the inventor of the present disclosure has created a technology capable of reducing the weight and maintaining the output characteristics of the solar cell module installed in the building.
  • the normal direction of the outer wall surface 11s on which the solar cell module 2 is installed is the + X direction
  • the horizontal direction along the outer wall surface 11s is the + Y direction
  • the vertical direction along the outer wall surface 11s is the + Z direction.
  • Building 1 includes, for example, small buildings such as houses and large buildings such as apartments, gymnasiums, commercial facilities and high-rise buildings.
  • FIG. 1 is a flow chart showing an example of the flow of the installation method of the solar cell module 2 according to the first embodiment.
  • the method of installing the solar cell module 2 includes, for example, two steps, step Sp1 and step Sp2.
  • step Sp1 a step (also referred to as a preparatory step) of preparing the building 1 and the solar cell module 2 is carried out.
  • the building 1 has, for example, an outer wall portion 11 which is an object on which the solar cell module 2 is installed.
  • the outer wall portion 11 is composed of, for example, an outer wall material such as a ceramic-based, metal-based, resin-based or wood-based siding, or a mortar portion.
  • Ceramic siding materials include, for example, cement, textile raw materials and admixtures.
  • As the material of the metal-based siding for example, a galvanium steel plate, a hot-dip galvanized steel plate, an aluminum alloy plate, a stainless steel plate, or the like is applied.
  • Wood such as red cedar, larch, sugi or laminated wood is applied to the wood-based siding material.
  • vinyl chloride resin or the like is applied to the resin-based siding material.
  • the outer wall material may be, for example, a flat plate-shaped material, or may be a member having a certain degree of unevenness, such as a corrugated galvanized iron plate which has been subjected to a square concave-convex processing.
  • the corrugated iron plate can be easily realized in a metal-based siding material such as a galvanium steel plate. Therefore, the shape of the outer wall surface 11s of the outer wall portion 11 is not limited to a flat shape, and may be a shape having a certain degree of unevenness. Further, as shown in FIG.
  • the solar cell module 2 has, for example, a front surface 2f and a back surface 2b located on the opposite side of the front surface 2f.
  • the building 1 or the solar cell module 2 may be prepared first, or the building 1 and the solar cell module 2 may be prepared at the same time.
  • the number of solar cell modules 2 prepared for installation on one outer wall portion 11 may be one or two or more.
  • step Sp2 for example, as shown in FIGS. 2 (b) and 3 (b), the solar cell is arranged by the holding portion 3 so that the back surface 2b is located along the outer wall surface 11s of the outer wall portion 11.
  • a step of holding the module 2 (also referred to as a holding step) is performed.
  • the outer wall surface 11s is a surface of the outer wall portion 11 facing the outside of the building 1. In the first embodiment, the outer wall surface 11s is in a state of facing the + X direction along the horizontal direction.
  • a specific example of the holding unit 3 will be described later.
  • the building 100 can be manufactured by such an installation method of the solar cell module 2.
  • the building 100 holds, for example, the outer wall portion 11, the solar cell module 2, and the solar cell module 2 so that the back surface 2b is located along the outer wall surface 11s of the outer wall portion 11. 3 and.
  • the building 100 is, for example, a building having a solar power generation system (also referred to as a building with a solar power generation system). If such a configuration is adopted, for example, since the back surface 2b of the solar cell module 2 is located along the outer wall surface 11s, the outer wall surface 11s and the back surface 2b are close to each other. Therefore, it is difficult for the wind to wrap around the back surface 2b side of the solar cell module 2, and vibration and bending are unlikely to occur in the solar cell module 2.
  • the solar cell element 231 (see FIGS. 4A and 4B) in the solar cell module 2 is less likely to crack, and the output characteristics of the solar cell module 2 are less likely to deteriorate. Therefore, for example, it is possible to reduce the weight of the solar cell module 2 installed in the building 1 and maintain the output characteristics.
  • the solar cell module when the outer wall surface 11s has a certain degree of unevenness, if a space capable of ventilation is appropriately formed between the back surface 2b of the solar cell module 2 and the recess of the outer wall surface 11s, the solar cell module.
  • the heat generation of 2 can be alleviated.
  • the solar cell module 2 includes, for example, a solar cell panel 20.
  • the solar cell panel 20 has, for example, a light receiving surface (front surface) 2f on which light is mainly incident, and a back surface 2b located on the opposite side of the front surface 2f.
  • the front surface 2f is in a state of facing the + X direction.
  • the back surface 2b is in a state of facing the ⁇ X direction.
  • the front surface 2f has a rectangular shape.
  • the solar cell module 2 may include, for example, a terminal box.
  • the terminal box is located, for example, on the back surface 2b or the front surface 2f of the solar cell panel 20, and can output the electricity obtained by the power generation in the solar cell panel 20 to the outside.
  • the solar cell module 2 may be installed along the outer wall surface 11s so that the terminal box is arranged in the recess of the outer wall surface 11s. ..
  • the solar cell module 2 may include, for example, a frame or the like. In this case, the frame is located along the outer peripheral portion of the solar cell panel 20, for example, and can protect the outer peripheral portion of the solar cell panel 20.
  • the solar cell panel 20 includes, for example, a front protective layer 21, a back protective layer 22, a solar cell portion 23, and a filler layer 24. include.
  • the front protective layer 21 has, for example, a first surface 21f and a second surface 21b.
  • the first surface 21f constitutes, for example, the front surface 2f of the solar cell panel 20.
  • the first surface 21f is exposed to the external space (also referred to as the external space) 200 of the solar cell module 2.
  • the second surface 21b is the surface opposite to the first surface 21f.
  • the front protective layer 21 has, for example, translucency. Specifically, the front protective layer 21 has, for example, translucency for light having a wavelength in a specific range.
  • the wavelength in the specific range includes, for example, the wavelength of light that can be photoelectrically converted by the solar cell unit 23. If the wavelength in a specific range includes the wavelength of light having a high irradiation intensity in sunlight, the photoelectric conversion efficiency of the solar cell module 2 can be improved.
  • a resin having weather resistance is applied to the material of the front protective layer 21.
  • the front protective layer 21 for example, a layer made of a weather-resistant resin is applied.
  • the weather resistance means, for example, a property that does not easily cause deterioration such as deformation, discoloration and deterioration when used outdoors.
  • the front protective layer 21 made of resin in the solar cell module 2 it is possible to reduce the thickness and weight of the solar cell module 2. As a result, for example, the solar cell module 2 is less likely to fall off from the position along the outer wall portion 11.
  • the front protective layer 21 reduces the infiltration of water such as water droplets from the external space 200 of the solar cell module 2 toward the solar cell unit 23, for example. At the same time, it has a property that moisture easily passes from the filler layer 24 to the external space 200 (also referred to as moisture permeable and waterproof property).
  • the weather-resistant resin includes, for example, a fluorine-based resin.
  • Fluorine-based resins include, for example, Fluorinated Ethylene Propylene (FEP), Ethylene Tetrafluoroethylene (ETFE), or Ethylene Chlorotrifluoroethylene copolymer. : ECTFE) and the like.
  • the front protective layer 21 may be made of two or more layers of a resin having weather resistance.
  • the fluorine-based resin applied to the front protective layer 21 may be, for example, two or more types of resins. Therefore, for example, it is conceivable that the fluorine-based resin applied to the front protective layer 21 contains at least one resin among FEP, ETFE and ECTFE.
  • the thickness of the front protective layer 21 is, for example, about 0.05 mm (mm) to 0.5 mm.
  • the solar cell unit 23 is located, for example, between the front protective layer 21 and the back protective layer 22. As shown in FIGS. 4A and 4B, the solar cell unit 23 has, for example, a plurality of solar cell elements 231. Therefore, for example, the plurality of solar cell elements 231 are located between the second surface 21b of the front protective layer 21 and the back surface protective layer 22. In the first embodiment, the plurality of solar cell elements 231 are in a state of being two-dimensionally arranged. In the examples of FIGS. 4A and 4B, the plurality of solar cell elements 231 are arranged in a plane so as to be located along the second surface 21b of the front protective layer 21.
  • the solar cell unit 23 has, for example, a plurality of first wiring materials 232 and a plurality of second wiring materials 233.
  • the solar cell unit 23 includes, for example, a plurality of solar cell strings 230 (10 in the examples of FIGS. 4A and 4B).
  • the solar cell string 230 includes, for example, a plurality of solar cell elements 231 (7 in the examples of FIGS. 4A and 4B) and a plurality of first wiring materials 232.
  • the plurality of first wiring materials 232 are in a state in which, for example, the solar cell elements 231 adjacent to each other among the plurality of solar cell elements 231 are electrically connected to each other.
  • the plurality of second wiring materials 233 are in a state in which the solar cell strings 230 adjacent to each other among the plurality of solar cell strings 230 are electrically connected to each other.
  • the second wiring material 233 connected to the solar cell string 230 located on the most ⁇ Y direction side and the second wiring material 233 located on the most + Y direction side are located.
  • the second wiring material 233 connected to the solar cell string 230 is connected to the configuration for outputting electric power to the outside of the solar cell panel 20.
  • Each of the plurality of solar cell elements 231 can convert light energy into electric energy, for example.
  • each of the plurality of solar cell elements 231 is a surface (also referred to as a first element surface) 231f located on the front surface side.
  • the first element surface 231f is in a state of facing the + X direction
  • the second element surface 231b is in a state of facing the ⁇ X direction.
  • the first element surface 231f mainly serves as a surface on which light is incident (also referred to as a light receiving surface), and the second element surface 231b is a surface on which light is mainly not incident (also referred to as a non-light receiving surface). ).
  • each of the plurality of solar cell elements 231 includes a semiconductor substrate 2310, a first output extraction electrode 2311, and a first current collector. It has an electrode 2312, a second output extraction electrode 2313, and a second current collector electrode 2314.
  • the semiconductor substrate 2310 includes, for example, a crystalline semiconductor such as crystalline silicon, an amorphous semiconductor such as amorphous silicon, four kinds of elements of copper, indium, gallium and selenium, or two kinds of elements of cadmium and tellurium. Compound-based semiconductors such as those used in the above are applied.
  • crystalline silicon is applied to the semiconductor substrate 2310.
  • the semiconductor substrate 2310 mainly has a region having a first conductive type (also referred to as a first conductive type region) and a region having a second conductive type opposite to the first conductive type (second conductive type region). Also called) and.
  • the first conductive type region is located, for example, on the second element surface 231b side of the semiconductor substrate 2310 in the ⁇ X direction.
  • the second conductive type region is located, for example, on the surface layer portion of the semiconductor substrate 2310 on the side of the first element surface 231f in the + X direction.
  • the semiconductor substrate 2310 has a pn junction located at the interface between the first conductive type region and the second conductive type region.
  • the first output extraction electrode 2311 and the first current collector electrode 2312 are located, for example, on the surface of the semiconductor substrate 2310 on the first element surface 231f side.
  • a bus bar electrode is applied to the first output take-out electrode 2311.
  • a finger electrode is applied to the first current collecting electrode 2312.
  • two substantially parallel first output extraction electrodes 2311 are located on the first element surface 231f side, and a large number of substantially parallel first current collecting electrodes 2312 are provided. It is located so as to be substantially orthogonal to the first output take-out electrode 2311.
  • the first output take-out electrode 2311 is silver
  • the first output take-out electrode 2311 is fired after the silver paste is applied to a desired shape by screen printing or the like. Can be formed.
  • the main component means the component having the largest (highest) content ratio (also referred to as content rate) among the contained components.
  • the silver paste for example, a metal powder containing silver as a main component, an organic vehicle, and a metal paste containing glass frit are applied.
  • the main component of the first current collector electrode 2312 is silver
  • silver paste is applied to the first current collector electrode 2312 in a desired shape by screen printing or the like, similarly to the first output extraction electrode 2311. It can be formed by firing afterwards.
  • the first output take-out electrode 2311 and the first current collector electrode 2312 may be formed, for example, in separate steps or in the same step.
  • the second output extraction electrode 2313 and the second current collector electrode 2314 are located, for example, on the surface of the semiconductor substrate 2310 on the second element surface 231b side.
  • a bus bar electrode is applied to the second output take-out electrode 2313.
  • two rows of second output take-out electrodes 2313 that are substantially parallel to each other along the + Z direction are located on the second element surface 231b side.
  • the second current collecting electrode 2314 is a portion of the semiconductor substrate 2310 on the surface of the semiconductor substrate 2310 on the second element surface 231b side, in which the second output extraction electrode 2313 and the second current collecting electrode 2314 are overlapped and connected to each other.
  • Each of the two rows of second output take-out electrodes 2313 includes, for example, four electrode portions aligned in a row.
  • a thin film of oxide or nitride such as aluminum oxide is a passivation film between the first conductive type region of the semiconductor substrate 2310 and the second output extraction electrode 2313 and the second current collecting electrode 2314 in a desired pattern. May exist as.
  • the main component of the second output take-out electrode 2313 is silver
  • the second output take-out electrode 2313 has a desired shape when the silver paste is screen-printed or the like, similarly to the first output take-out electrode 2311.
  • the second current collector electrode 2314 can be formed by being applied to and then fired.
  • the second current collector electrode 2314 can be formed by applying an aluminum paste to a desired shape by screen printing or the like and then firing the paste. ..
  • the aluminum paste for example, a metal powder containing aluminum as a main component, an organic vehicle, and a metal paste containing glass frit are applied.
  • the first wiring material 232 includes, for example, a first output take-out electrode 2311 of one solar cell element 231 and a second output take-out electrode 2313 of another solar cell element 231 adjacent to the one solar cell element 231. Is in a state of being electrically connected.
  • the outer edge of the first wiring material 232 attached to each of the plurality of solar cell elements 231 is drawn by a virtually thin two-dot chain line.
  • the first wiring material 232 is in a state of being joined to, for example, the first output take-out electrode 2311 and the second output take-out electrode 2313.
  • Cn1 also referred to as a joint portion
  • the first wiring material 232 is in a state of being joined to the first output take-out electrode 2311 of one solar cell element 231 via the first joining portion Cn1.
  • a portion located between the first wiring material 232 and the second output take-out electrode 2313 and joining the first wiring material 232 and the second output take-out electrode 2313 both the second joint portion).
  • the first wiring material 232 is joined to the second output take-out electrode 2313 of the other solar cell element 231 adjacent to one solar cell element 231 via the second joint portion Cn2. It is in.
  • a linear or strip-shaped conductive metal body is applied to the first wiring material 232.
  • a low melting point alloy such as solder or a low melting point simple substance metal is applied. More specifically, for example, a copper foil having a thickness of about 0.1 mm to 0.2 mm and a width of about 1 mm to 2 mm is applied to the first wiring material 232, and solder is applied to the entire surface of the first wiring material 232. Is in a covered state.
  • the first wiring material 232 is in a state of being electrically connected to the first output take-out electrode 2311 and the second output take-out electrode 2313 by, for example, soldering.
  • the solder located between the first wiring material 232 and the first output take-out electrode 2311 constitutes the first joint portion Cn1.
  • the solder located between the first wiring material 232 and the second output take-out electrode 2313 is in a state of forming the second joint portion Cn2.
  • the first joint portion Cn1 and the second joint portion Cn2 are also referred to as, for example, simply "joint portions".
  • the filler layer 24 is in a state of covering the solar cell portion 23 between the front protective layer 21 and the back surface protective layer 22.
  • the filler layer 24 is in a state of covering a plurality of solar cell elements 231 between the front surface protection layer 21 and the back surface protection layer 22.
  • the filler layer 24 is filled with, for example, 2 g of a region (also referred to as a gap region) between the front protective layer 21 and the back surface protective layer 22 so as to cover the solar cell portion 23. It is in a state.
  • the filler layer 24 is, for example, a filler layer (also referred to as a first filler layer) 241 located on the front surface 2f side and a filler layer (also referred to as a first filler layer) 241 located on the back surface 2b side. 2 (also referred to as a filler layer) 242 and.
  • the first filler layer 241 is in a state of covering the entire surface of the solar cell unit 23 on the front protective layer 21 side, for example. In other words, the first filler layer 241 is in a state of covering the plurality of solar cell elements 231 between the front surface protective layer 21 and the plurality of solar cell elements 231 for example.
  • the second filler layer 242 is, for example, in a state of covering the entire surface of the solar cell portion 23 on the back surface protective layer 22 side.
  • the second filler layer 242 is in a state of covering the plurality of solar cell elements 231 between the back surface protective layer 22 and the plurality of solar cell elements 231 for example. Therefore, in the first embodiment, the solar cell unit 23 is surrounded so as to be sandwiched between, for example, the first filler layer 241 and the second filler layer 242. Thereby, for example, the attitude of the solar cell unit 23 can be maintained by the filler layer 24.
  • the filler layer 24 has, for example, translucency.
  • the filler layer 24 has, for example, translucency with respect to light having a wavelength in the above-mentioned specific range.
  • the front surface 2f side is used. The incident light of the above can reach the solar cell unit 23.
  • the material of the first filler layer 241 has, for example, a chemical structure in which free acid is generated.
  • a polyvinyl acetal such as ethylene vinyl acetate copolymer (EVA) or polyvinyl butyral (PVB) or an acid-modified resin is applied to the material of the first filler layer 241.
  • EVA ethylene vinyl acetate copolymer
  • PVB polyvinyl butyral
  • an acid-modified resin for example, if a relatively inexpensive EVA is applied to the material of the first filler layer 241, the performance of protecting the plurality of solar cell elements 231 can be easily realized.
  • the acid-modified resin for example, a modified polyolefin resin that can be formed by graft modification with an acid to a resin such as polyolefin is applied.
  • Acids that can be used for graft modification of acid-modified resins include, for example, acrylic acid, methacrylic acid, maleic acid, fumaric acid, itaconic acid, maleic anhydride, hymic anhydride, itaconic anhydride or citraconic anhydride. Applies.
  • the free acid is, for example, an acid that is not bound to a base.
  • the free acid is, for example, an acid that can form a solvate in solution but is not bound to anything other than the solvent.
  • chemical structures that generate free acids in EVA, PVB, etc. include, for example, acetoxy groups.
  • a resin having an acetoxy group may generate acetic acid, which is a free acid, by, for example, thermal decomposition and hydrolysis.
  • acetic acid which is a free acid
  • the material of the second filler layer 242 for example, polyvinyl acetal such as EVA and PVB or an acid-modified resin is applied as in the case of the first filler layer 241.
  • the first filler layer 241 and the second filler layer 242 may be composed of, for example, two or more kinds of materials.
  • the back surface protective layer 22 is in a state of forming, for example, the back surface 2b of the solar cell module 2.
  • the back surface protective layer 22 is, for example, in a state of facing the second surface 21b of the front surface protective layer 21.
  • the back surface protective layer 22 can protect the solar cell unit 23 from the back surface 2b side, for example.
  • the back surface protective layer 22 is a layer made of resin.
  • a back sheet constituting the back surface 2b is applied to the back surface protective layer 22.
  • the thickness of the back sheet is, for example, about 0.3 mm to 0.5 mm.
  • the material of the back sheet for example, a thermoplastic resin such as polycarbonate, or a fluorine-based resin such as FEP, ETFE or ECTFE is applied.
  • the material of the back surface protective layer 22 is, for example, one kind of resin among polyvinyl fluoride (PVF), polyethylene terephthalate (PET) and polyethylene naphthalate (PEN), or at least one kind of resin of these resins. May be applied.
  • the back surface protective layer 22 may be composed of two or more layers of resin.
  • the resin applied to the back surface protective layer 22 may be, for example, two or more kinds of resins. Further, in the example of FIG.
  • the back surface protective layer 22 is positioned so as to wrap the solar cell portion 23 and the filler layer 24 from the back surface 2b side and the side outer peripheral portion side. Then, the back surface protective layer 22 is in a state of being adhered to the outer peripheral portion of the front surface protective layer 21.
  • the back surface protective layer 22 has the same shape as the front surface protective layer 21 when viewed in a plane from the back surface 2b side, for example. For example, when viewed from the back surface 2b side in a plane, it is assumed that both the front surface protection layer 21 and the back surface protection layer 22 have a rectangular outer shape.
  • the front protective layer 21 has moisture permeability and waterproof property. Therefore, for example, even if the filler layer 24 generates free acids such as acetic acid by thermal decomposition and hydrolysis, the free acids generated in the filler layer 24 pass through the front protective layer 21 to the external space 200. Can be dissipated in. As a result, for example, the electrode and the joint portion of the solar cell element 231 are less likely to be corroded by the free acid. As a result, for example, the long-term reliability of the solar cell module 2 can be improved.
  • the water vapor transmittance Water Vapor Transmission Rate: WVTR
  • the mean time between failures Mean Time To Failure: MTTF
  • WVTR Water Vapor Transmission Rate
  • MTTF mean time between failures
  • a glass plate having a thickness of 3.2 mm also referred to as a glass plate
  • a FEP film having a thickness of 0.1 mm also referred to as FEP film
  • An ETFE film having a thickness of 0.1 mm also referred to as ETFE film
  • the water vapor transmission rate (WVTR) for each of the glass plate, FEP film and ETFE film is measured according to the "permeation humidity test method (cup method) for moisture-proof packaging materials" specified in Japanese Industrial Standards (JIS) Z0208. Obtained.
  • Water vapor transmission rate (WVTR) is the amount of water vapor that permeates a 1 square meter (1 m 2) film in 24 hours in grams. The unit of this water vapor transmission rate (WVTR) is shown as g / m 2 / day.
  • the mean time between failures (MTTF) of the solar cell module 2 using the glass plate, the FEP film, and the ETFE film as the front protective layer 21 was determined by performing a high temperature and high humidity test using a constant light solar simulator. It was obtained by measuring the time when the maximum output (Pm) decreased by 10%, the time when the maximum output (Pm) decreased by 15%, the time when the maximum output (Pm) decreased by 20%, and the time when the maximum output (Pm) decreased by 30%, respectively. Therefore, here, mean time between failures (MTTF) indicates the durability of the solar cell module 2 under high temperature and high humidity conditions.
  • the mean time between failures (MTTF) of the solar cell module 2 using the FEP film and the ETFE film as the front protective layer 21 is the mean time between failures (MTTF) of the solar cell module 2 using the glass plate as the front protective layer 21. It is shown as a value with MTTF) as the reference value of 1.
  • the mean time between failures (MTTF) at which the maximum output (Pm) of the glass plate drops by 10% from the value in the initial state was set to 1 as the reference value.
  • Mean time between failures (MTTF) in which the maximum output (Pm) of the FEP film decreases by 10% from the initial value is the mean time between failures (MTTF) in which the maximum output (Pm) of the FEP film decreases by 10% from the initial value. It was obtained by dividing the measured value of MTTF) by the measured value of mean time between failures (MTTF) in which the maximum output (Pm) of the glass plate is reduced by 10% from the value in the initial state.
  • Mean time between failures (MTTF) in which the maximum output (Pm) of the ETFE film decreases by 10% from the initial value is the mean time between failures (MTTF) in which the maximum output (Pm) of the ETFE film decreases by 10% from the initial value. It was obtained by dividing the measured value of MTTF) by the measured value of mean time between failures (MTTF) in which the maximum output (Pm) of the glass plate is reduced by 10% from the value in the initial state.
  • the mean time between failures (MTTF) at which the maximum output (Pm) of the glass plate drops by 15% from the value in the initial state was set to 1 as the reference value.
  • Mean time between failures (MTTF) in which the maximum output (Pm) of the FEP film decreases by 15% from the initial value is the mean time between failures (MTTF) in which the maximum output (Pm) of the FEP film decreases by 15% from the initial value. It was obtained by dividing the measured value of MTTF) by the measured value of mean time between failures (MTTF) in which the maximum output (Pm) of the glass plate is reduced by 15% from the value in the initial state.
  • Mean time between failures (MTTF) in which the maximum output (Pm) of the ETFE film decreases by 15% from the initial value is the mean time between failures (MTTF) in which the maximum output (Pm) of the ETFE film decreases by 15% from the initial value. It was obtained by dividing the measured value of MTTF) by the measured value of mean time between failures (MTTF) in which the maximum output (Pm) of the glass plate is reduced by 15% from the value in the initial state.
  • the mean time between failures (MTTF) at which the maximum output (Pm) of the glass plate drops by 20% from the value in the initial state was set to 1 as the reference value.
  • Mean time between failures (MTTF) in which the maximum output (Pm) of the FEP film decreases by 20% from the initial value is the mean time between failures (MTTF) in which the maximum output (Pm) of the FEP film decreases by 20% from the initial value. It was obtained by dividing the measured value of MTTF) by the measured value of mean time between failures (MTTF) in which the maximum output (Pm) of the glass plate is reduced by 20% from the value in the initial state.
  • Mean time between failures (MTTF) in which the maximum output (Pm) of the ETFE film decreases by 20% from the initial value is the mean time between failures (MTTF) in which the maximum output (Pm) of the ETFE film decreases by 20% from the initial value. It was obtained by dividing the measured value of MTTF) by the measured value of mean time between failures (MTTF) in which the maximum output (Pm) of the glass plate is reduced by 20% from the value in the initial state.
  • the mean time between failures (MTTF) at which the maximum output (Pm) of the glass plate drops by 30% from the value in the initial state was set to 1 as the reference value.
  • Mean time between failures (MTTF) in which the maximum output (Pm) of the FEP film decreases by 30% from the initial value is the mean time between failures (MTTF) in which the maximum output (Pm) of the FEP film decreases by 30% from the initial value. It was obtained by dividing the measured value of MTTF) by the measured value of mean time between failures (MTTF) in which the maximum output (Pm) of the glass plate is reduced by 30% from the value in the initial state.
  • Mean time between failures (MTTF) in which the maximum output (Pm) of the ETFE film decreases by 30% from the initial value is the mean time between failures (MTTF) in which the maximum output (Pm) of the ETFE film decreases by 30% from the initial value. It was obtained by dividing the measured value of MTTF) by the measured value of mean time between failures (MTTF) in which the maximum output (Pm) of the glass plate is reduced by 30% from the value in the initial state.
  • the water vapor transmission rate (WVTR) of the glass plate having a thickness of 3.2 mm was 0 g / m 2 / day.
  • the water vapor transmission rate (WVTR) of the FEP film having a thickness of 0.1 mm was 0.9 g / m 2 / day.
  • the water vapor transmission rate (WVTR) of the ETFE film having a thickness of 0.1 mm was 4.9 g / m 2 / day.
  • the mean time between failures (MTTF) at which the maximum output (Pm) is reduced by 10% from the value in the initial state is 1.09.
  • the mean time between failures (MTTF) at which the maximum output (Pm) decreases by 15% from the value in the initial state is 1.71, and the mean time between failures (Pm) decreases by 20% from the value in the initial state. (MTTF) was 1.89, and the mean time between failures (MTTF) at which the maximum output (Pm) decreased by 30% from the value in the initial state was 3.35.
  • the mean time between failures (MTTF) at which the maximum output (Pm) drops by 10% from the value in the initial state is 0.81, and the maximum output (Pm) is the initial value.
  • the mean time between failures (MTTF), which is 15% lower than the value of the state, is 2.62, and the mean time between failures (MTTF), which is 20% lower than the value of the initial state, is 3.39.
  • the mean time between failures (MTTF) at which the maximum output (Pm) drops by 30% from the value in the initial state was 4.78.
  • the water vapor transmission rate (WVTR) is 0 g / m 2 / day. It was confirmed that the mean time between failures (MTTF) required to reduce the maximum output (Pm) is significantly longer than when a certain glass plate is used for the front protective layer 21. Further, when an ETFE film having a water vapor transmission rate (WVTR) of 4.9 g / m 2 / day is used for the front protective layer 21, the water vapor transmission rate (WVTR) is 0.9 g / m 2 / day. It was confirmed that the mean time between failures (MTTF) at which the maximum output (Pm) is reduced by 15% or more from the value in the initial state is further longer than that when the FEP film is used for the front protective layer 21.
  • WVTR water vapor transmission rate
  • the material of the front protective layer 21 is a resin such as FEP and ETFE having weather resistance
  • the front protective layer 21 has moisture permeability and waterproof property, so that the free acid generated in the filler layer 24 is the front protective layer. It is presumed that the electrode and the joint portion of the solar cell element 231 are less likely to be corroded by being dissipated to the external space 200 via the 21 and the long-term reliability of the solar cell element 231 is improved.
  • the front protective layer 21 a resin film having a rectangular front and back surface and weather resistance is prepared.
  • a fluorine-based resin is adopted.
  • the fluorine-based resin for example, FEP, ETFE, ECTFE, or the like is adopted.
  • the second surface 21b which is one surface of the front protective layer 21, is subjected to a treatment for activating the surface such as a corona treatment or a plasma treatment.
  • a treatment for activating the surface such as a corona treatment or a plasma treatment.
  • the front protective layer 21, the first sheet 241s, the solar cell unit 23, the second sheet 242s, and the back surface protective layer 22 are arranged in the order of description.
  • a laminated body 20s is formed.
  • wirings and terminals drawn from the solar cell unit 23 are appropriately arranged to be electrically connected to the outside of the solar cell module 2.
  • through holes may be appropriately formed at locations where wiring and terminals are arranged.
  • the first sheet 241s is, for example, a sheet made of a resin (EVA or the like) that is a base of the first filler layer 241.
  • the second sheet 242s is, for example, a sheet of a resin (EVA or the like) that is a base of the second filler layer 242.
  • a laminating process is performed on the laminated body 20s.
  • a laminating device laminator
  • the laminated body 20s is placed on a heater board in the chamber, and the pressure in the chamber is reduced from 50 Pascal (Pa) to about 150 Pa, and the laminated body 20s is heated from 100 degrees Celsius (100 ° C.) to 200 degrees Celsius. Heat to about degree (200 ° C).
  • the first sheet 241s and the second sheet 242s are in a state where they can flow to some extent by heating.
  • the laminated body 20s is integrated by pressing the laminated body 20s with a diaphragm sheet or the like in the chamber.
  • the solar cell panel 20 as shown in FIGS. 4 (a) and 4 (b) can be formed.
  • a terminal box, an aluminum frame, or the like may be appropriately attached to the solar cell panel 20.
  • the wiring drawn from the solar cell unit 23 to the outside of the solar cell module 2 is appropriately connected to the terminals in the terminal box.
  • an aluminum frame is attached along the side surface of the solar cell panel 20.
  • a sealing material having a low moisture permeability such as a butyl resin may be filled between the side surface of the solar cell panel 20 and the frame.
  • the solar cell module 2 can be formed.
  • the solar cell module 2 may not have, for example, a frame, or may not have a terminal box. In other words, the solar cell module 2 has at least the solar cell panel 20.
  • the solar cell module 2 may have a protective film 235 located on a part of the first surface 21f of the front protective layer 21.
  • the protective film 235 can protect, for example, the first surface 21f, and scratches and the like are less likely to occur on the first surface 21f of the resin front protective layer 21.
  • Inorganic materials such as silicon oxide and silicon nitride are applied to the material of the protective film 235. These inorganic materials have, for example, weather resistance.
  • the protective film 235 has, for example, a through hole 235h that is in a state of penetrating in the thickness direction.
  • the free acid generated in the filler layer 24 can be dissipated into the external space 200 through the front protective layer 21 and the through holes 235h of the protective film 235. Therefore, for example, the free acid generated from the filler layer 24 can be dissipated to the external space 200 via the front protective layer 21 while the first surface 21f of the front protective layer 21 is protected by the protective film 235. Therefore, for example, if at least a part of the first surface 21f of the front protective layer 21 is exposed to the external space 200 of the solar cell module 2, the free acid generated from the filler layer 24 will be released. , Can be dissipated into the exterior space 200 via the front protective layer 21.
  • the protective film 235 can be formed by, for example, a dry film forming method such as a sputtering method or chemical vapor deposition (CVD) or a wet film forming method such as a coating method.
  • a dry film forming method such as a sputtering method or chemical vapor deposition (CVD)
  • CVD chemical vapor deposition
  • a wet film forming method such as a coating method.
  • a protective film 235 having a very thin thickness is formed by a dry film forming method
  • a protective film 235 having a large number of through holes 235h can be formed.
  • the protective film 235 is formed by a dry film forming method, if a mesh mask or the like is used, the protective film 235 having a desired shape and number of through holes 235h can be formed.
  • a liquid also referred to as a coating liquid
  • the coating liquid may be dried to form a protective film 235 having a desired shape and number of through holes 235h.
  • the solar cell element 231 included in the solar cell unit 23 is a plurality of thin-film solar cell elements including a thin-film semiconductor and a transparent electrode, respectively.
  • Thin film semiconductors include, for example, silicon-based, compound-based or other types of semiconductors.
  • the silicon-based thin-film semiconductor for example, a semiconductor using amorphous silicon, thin-film polycrystalline silicon, or the like is applied.
  • Compound-based thin-film semiconductors include, for example, compound semiconductors having a chalcopyrite structure such as CIS semiconductors or CIGS semiconductors, compound semiconductors such as compounds having a perovskite structure, compound semiconductors having a kesterite structure, or cadmium telluride (CdTe) semiconductors. Is applied.
  • the CIS semiconductor is a compound semiconductor containing copper (Cu), indium (In) and selenium (Se).
  • the CIGS semiconductor is a compound semiconductor containing Cu, In, gallium (Ga) and Se.
  • the solar cell unit 23 includes, for example, a substrate 27 and a plurality of thin-film solar cell elements 231 that are arranged in a plane on the substrate 27.
  • each of the plurality of solar cell elements 231 is located along a virtual or actual plane, and the plurality of solar cell elements 231 are arranged in a plane.
  • a transparent glass substrate having a thickness of about 0.5 mm to 2 mm is applied to the substrate 27.
  • the plurality of thin-film solar cell elements 231 may be electrically connected in series by connecting the positive electrode and the negative electrode between adjacent solar cell elements 231 for example. ..
  • the output wiring materials also referred to as output wiring materials
  • the output electrode of the solar cell element 231 and the output wiring material are joined.
  • the output wiring material is connected to, for example, a configuration for outputting electric power to the outside of the solar cell panel 20.
  • the free acid generated in the filler layer 24 can be dissipated to the external space 200 via the front protective layer 21.
  • the transparent electrode and the joint portion of the thin-film solar cell element 231 are less likely to be corroded by the free acid.
  • the stacking order of the substrate 27 and the plurality of solar cell elements 231 may be upside down.
  • the filler layer 24 may have the first filler layer 241 without having the second filler layer 242.
  • the filler layer 24 is in a state of covering the solar cell unit 23 between the front surface protective layer 21 and the solar cell unit 23 including the plurality of solar cell elements 231. Therefore, for example, the filler layer 24 is in a state of covering the plurality of solar cell elements 231 between the front surface protective layer 21 and the plurality of solar cell elements 231.
  • the substrate 27 of the solar cell unit 23 may be the back surface protective layer 22.
  • the front protective layer 21 has a plurality of fine through holes (also referred to as fine through holes) 21h extending from the first surface 21f to the second surface 21b. You may be.
  • the diameter of the fine through hole 21h is, for example, less than the diameter of water droplets such as raindrops and drizzle and equal to or larger than the diameter of water droplets in water vapor.
  • the diameter of the fine through hole 21h is, for example, about 0.1 mm to 1 mm.
  • the plurality of fine through holes 21h in the front protective layer 21 can be formed, for example, by micromachining or punching with a laser on a sheet of weather-resistant resin.
  • the waterproof property of the front protective layer 21 is unlikely to decrease, and the moisture permeability of the front protective layer 21 can be improved. Therefore, for example, even if the filler layer 24 generates free acids such as acetic acid by thermal decomposition and hydrolysis, the free acids generated in the filler layer 24 are the plurality of fine through holes 21h of the front protective layer 21. Can be dissipated into the exterior space 200 via. As a result, for example, the electrodes and the joint portion of the solar cell element 231 are less likely to be corroded by the free acid.
  • the material of the front protective layer 21 may be, for example, the above-mentioned resin having weather resistance, or other material having weather resistance.
  • the front protective layer 21 may have, for example, a plurality of fine through holes 21h extending from the first surface 21f to the second surface 21b, and may have weather resistance. Even if such a configuration is adopted, for example, the free acid generated from the filler layer 24 can be dissipated into the external space 200 through the fine through holes 21h of the front protective layer 21. As a result, for example, corrosion of the electrodes and joints of the solar cell element 231 due to free acid is less likely to occur.
  • a Gore-Tex (registered trademark) membrane which is a waterproof and breathable material, may be applied to the other weather-resistant material used as the material of the front protective layer 21.
  • Stretched porous polytetrafluoroethylene (ePTFE) using PTFE is applied to the Gore-Tex (registered trademark) membrane. Therefore, the diameter of the fine through hole 21h may be, for example, about 0.2 ⁇ m, which is the average diameter of ePTFE. In other words, the diameter of the fine through hole 21h may be, for example, about 0.2 ⁇ m to 1 mm.
  • the plurality of fine through holes 21h of the front protective layer 21 allow the solar cell unit from the external space 200.
  • Light directed to a portion other than the first output extraction electrode 2311 of 23 is less likely to be diffusely reflected by the front protective layer 21.
  • the photoelectric conversion efficiency in the solar cell module 2 is unlikely to decrease.
  • free acid is likely to be dissipated from the region on the first output extraction electrode 2311 of the filler layer 24 to the external space 200 through the fine through hole 21h of the front protective layer 21.
  • corrosion of the electrodes and joints of the solar cell element 231 due to free acid is less likely to occur.
  • the fastening member 3A can be applied to the holding portion 3.
  • the fastening member 3A includes, for example, a pressing portion 3h and a shaft portion 3a.
  • the shaft portion 3a is in a state of protruding from the pressing portion 3h.
  • the pressing portion 3h and the shaft portion 3a are integrally formed, for example.
  • screws and nails may be applied to the fastening member 3A.
  • the pressing portion 3h is, for example, a head having a disk-shaped shape.
  • the shaft portion 3a is located, for example, so as to project from the center of one side of a substantially circular plate-shaped head as the pressing portion 3h in the thickness direction of the pressing portion 3h.
  • the pressing portion 3h is located along the YZ plane.
  • the shaft portion 3a has a longitudinal direction along the ⁇ X direction.
  • resin, wood, metal and the like can be applied to the material of the fastening member 3A.
  • the material of the fastening member 3A is an insulator such as resin and wood, or if the surface of the fastening member 3A is covered with an insulator such as fluororesin or ceramics, a short circuit or electric leakage in the solar cell module 2 may occur. Is unlikely to occur.
  • the shaft portion 3a is attached to the outer wall portion 11 Is inserted at least halfway from the outer wall surface 11s in the above in the thickness direction (X-axis direction) of the outer wall portion 11.
  • the holding portion 3h and the outer wall portion 11 sandwich the solar cell module 2.
  • the fastening member 3A is in a state of fastening the outer wall portion 11 and the solar cell module 2.
  • the shaft portion 3a is inserted into the outer wall portion 11 in the ⁇ X direction by screwing in a screw or driving a nail.
  • the building 100 is produced.
  • the shaft portion 3a is fixed to the outer wall portion 11 by being inserted from the outer wall surface 11s of the outer wall portion 11 to at least halfway in the thickness direction (X-axis direction) of the outer wall portion 11. Is in a state of being.
  • the holding portion 3h and the outer wall portion 11 are in a state of sandwiching the solar cell module 2. If such a configuration is adopted, for example, the solar cell module 2 can be easily installed along the outer wall portion 11. Further, for example, the degree of freedom in the position where the solar cell module 2 is installed along the outer wall portion 11 can be improved.
  • the fastening member 3A is configured to penetrate the solar cell module 2 in the thickness direction (X-axis direction) of the solar cell module 2. Conceivable.
  • seven fastening members 3A penetrate the solar cell module 2 and are fixed to the outer wall portion 11.
  • the solar cell module 2 is penetrated by the shaft portion 3a, and the shaft portion 3a is passed in the thickness direction of the outer wall portion 11 from the outer wall surface 11s of the outer wall portion 11 ( By inserting at least halfway in the X-axis direction), the shaft portion 3a is fixed to the outer wall portion 11.
  • the holding portion 3h and the outer wall portion 11 are in a state of sandwiching the solar cell module 2.
  • the shaft portion 3a penetrates the solar cell module 2 in the ⁇ X direction and is inserted into the outer wall portion 11 by screwing in a screw or driving a nail.
  • the building 100 is produced.
  • the shaft portion 3a penetrates the solar cell module 2 and is inserted from the outer wall surface 11s of the outer wall portion 11 to at least halfway in the thickness direction (X-axis direction) of the outer wall portion 11. It is in a state of being fixed to the outer wall portion 11 by being present.
  • the holding portion 3h and the outer wall portion 11 are in a state of sandwiching the solar cell module 2. If such a configuration is adopted, for example, the solar cell module 2 can be stably installed along the outer wall portion 11. Further, for example, the degree of freedom in the position where the solar cell module 2 is installed along the outer wall portion 11 can be improved.
  • FIG. 8C a configuration in which the fastening member 3A does not penetrate the solar cell module 2 may be adopted.
  • a thin two-dot chain line is drawn at a position where the fastening member 3A is provided at a position along the edge of the solar cell module 2.
  • the shaft portion 3a is outside the outer wall portion 11 without penetrating the solar cell module 2 by the shaft portion 3a.
  • the shaft portion 3a is fixed to the outer wall portion 11 by inserting the outer wall portion 11 from the wall surface 11s at least halfway in the thickness direction (X-axis direction) of the outer wall portion 11.
  • the holding portion 3h and the outer wall portion 11 are in a state of sandwiching the solar cell module 2.
  • the shaft portion 3a is inserted into the outer wall portion 11 in the ⁇ X direction without penetrating the solar cell module 2 by screwing in a screw or driving a nail.
  • the building 100 is produced.
  • the shaft portion 3a is inserted from the outer wall surface 11s of the outer wall portion 11 to at least halfway in the thickness direction (X-axis direction) of the outer wall portion 11 without penetrating the solar cell module 2. As a result, it is in a state of being fixed to the outer wall portion 11.
  • the holding portion 3h and the outer wall portion 11 are in a state of sandwiching the solar cell module 2. If such a configuration is adopted, for example, the fastening member 3A does not penetrate the solar cell module 2, and the durability of the solar cell module 2 can be improved.
  • FIGS. 8 (b) and 8 (c) the furring strip 12, the breathable waterproof sheet 13, and the structural plywood are shown from the outer wall portion 11 toward the inside of a building such as a house as a building 1.
  • An example is shown in which 14 and 14 are laminated in the order described in this description.
  • a ventilation layer is appropriately provided on the furring strip 12.
  • the structural plywood 14 is supported, for example, by studs from the inside of the building 1.
  • a moisture-proof sheet, a base material such as plywood or gypsum board, and a cloth such as wallpaper or decorative plywood are laminated in the order described in this description.
  • the outer wall portion 11 is in the thickness direction (X-axis direction) from the outer wall surface 11s to the outer wall portion 11.
  • the structure 1 may be prepared so as to include the hole 11h located at least halfway and the filler 11c filled in the hole 11h.
  • the hole portion 11h can be formed, for example, by drilling or punching the outer wall material with a tool such as a drill.
  • the filler 11c can be formed, for example, by filling the pores 11h with a caulking material such as silicone or urethane.
  • a caulking material such as silicone or urethane.
  • the outer edge of the area where the solar cell module 2 is installed is drawn by a thin alternate long and short dash line.
  • the shaft portion 3a is inserted into the filler 11c by inserting the shaft portion 3a into the outer wall portion 11. It may be fixed so that the holding portion 3h and the outer wall portion 11 sandwich the solar cell module 2.
  • the building 100 is produced.
  • the outer wall portion 11 is filled in the hole portion 11h located at least halfway in the thickness direction (X-axis direction) of the outer wall portion 11s from the outer wall surface 11s and in the hole portion 11h.
  • the filler 11c and the like are included. Further, for example, the shaft portion 3a is fixed to the outer wall portion 11 by being inserted into the filler 11c. Then, for example, the holding portion 3h and the outer wall portion 11 are in a state of sandwiching the solar cell module 2. If such a configuration is adopted, for example, the outer wall portion 11 is less likely to be cracked due to screwing of a screw or driving of a nail, so that the waterproofness and strength of the outer wall portion 11 are less likely to be lowered. Even when such a configuration is adopted, for example, as shown in FIG. 9C, the shaft portion 3a may penetrate the solar cell module 2 or is shown in FIG. 9D. As described above, the shaft portion 3a does not have to penetrate the solar cell module 2.
  • the outer wall portion 11 is in the thickness direction (X-axis direction) from the outer wall surface 11s to the outer wall portion 11. ) May be prepared so as to include a hole 11h, which is located at least halfway and has a female screw portion.
  • a hole 11h for example, after forming a hole by drilling or punching the outer wall material with a tool such as a drill, a cylindrical part 11f having a female screw portion on the inner peripheral surface is formed in the hole. It can be formed by fixing by fitting or bonding.
  • the outer edge of the area where the solar cell module 2 is installed is drawn by a thin alternate long and short dash line.
  • the male screw portion formed around the shaft portion 3a in the female screw portion of the hole portion 11h may be fixed to the outer wall portion 11 by fitting, and the holding portion 3h and the outer wall portion 11 may be in a state of sandwiching the solar cell module 2. As a result, the building 100 is produced.
  • the outer wall portion 11 includes a hole portion 11h located at least halfway from the outer wall surface 11s in the thickness direction (X-axis direction) of the outer wall portion 11 and having a female screw portion.
  • the shaft portion 3a has a male screw portion. The shaft portion 3a is fixed to the outer wall portion 11 by fitting the male screw portion to the female screw portion of the hole portion 11h, for example. Then, for example, the holding portion 3h and the outer wall portion 11 are in a state of sandwiching the solar cell module 2.
  • the outer wall portion 11 is less likely to be cracked due to screwing of a screw or driving of a nail, so that the waterproofness and strength of the outer wall portion 11 are less likely to be lowered.
  • the shaft portion 3a may penetrate the solar cell module 2 or is shown in FIG. 10 (d). As described above, the shaft portion 3a does not have to penetrate the solar cell module 2.
  • the outer wall portion 11 is the first layer 11a and the outer wall surface of the first layer 11a.
  • the building 1 may be prepared so as to have a structure in which a plurality of layers including the second layer 11b located on the 11s side are laminated.
  • an outer wall material such as the above-mentioned siding is applied to the first layer 11a, and for example, a wooden or metal plate or square lumber is applied to the second layer 11b.
  • the second layer 11b can be formed, for example, by joining the surface of the first layer 11a with an adhesive or the like. Then, for example, as shown in FIGS.
  • the shaft portion 3a is inserted into the second layer 11b by inserting the shaft portion 3a into the outer wall portion 11 to form the shaft portion 3a. May be fixed, and the holding portion 3h and the outer wall portion 11 may be in a state of sandwiching the solar cell module 2.
  • the building 100 is produced.
  • the outer wall portion 11 includes a first layer 11a and a second layer 11b located on the outer wall surface 11s side of the first layer 11a.
  • the shaft portion 3a is fixed to the outer wall portion 11 by being inserted into the second layer 11b, for example.
  • the holding portion 3h and the outer wall portion 11 are in a state of sandwiching the solar cell module 2.
  • the first layer 11a is less likely to be cracked due to screwing of a screw or driving of a nail, so that the waterproofness and strength of the outer wall portion 11 are less likely to be lowered.
  • the shaft portion 3a may penetrate the solar cell module 2 or is shown in FIG. 11D. As described above, the shaft portion 3a does not have to penetrate the solar cell module 2.
  • the second layer 11b may be arranged in the entire area where the solar cell module 2 is installed.
  • the second layer 11b may be locally arranged at the portion of the outer wall portion 11 into which the fastening member 3A is inserted.
  • the outer edge of the area where the solar cell module 2 is installed is drawn by a thin alternate long and short dash line.
  • the second layer 11b may be in a state of being embedded in the first layer 11a.
  • Such a configuration can be realized, for example, by forming an outer wall material as the first layer 11a in a state where the second layer 11b is embedded.
  • the building 1 has a back surface (also referred to as an outer wall back surface) 11bs which is opposite to the outer wall surface 11s of the outer wall portion 11.
  • the structure 1 may be prepared so as to include the pillar portion 16 in a fixed state. For example, studs or the like are applied to the pillar portion 16.
  • FIGS. 13 (b) and 13 (c) even if another member 15 such as another layer is located between the pillar portion 16 and the outer wall portion 11. good. Then, as shown in FIGS.
  • the outer wall portion 11 is penetrated by the shaft portion 3a and the shaft portion 3a is inserted into the pillar portion 16.
  • the shaft portion 3a may be fixed to the outer wall portion 11 and the pillar portion 16 so that the holding portion 3h and the outer wall portion 11 sandwich the solar cell module 2.
  • the building 100 includes, for example, a pillar portion 16 in which a back surface (outer wall back surface) 11 bs opposite to the outer wall surface 11s of the outer wall portion 11 is fixed.
  • the shaft portion 3a is fixed to the outer wall portion 11 by penetrating the outer wall portion 11 and being inserted into the pillar portion 16, for example.
  • the holding portion 3h and the outer wall portion 11 are in a state of sandwiching the solar cell module 2. If such a configuration is adopted, for example, the fastening member 3A is firmly fastened to the outer wall portion 11 and the pillar portion 16, so that the solar cell module 2 is less likely to fall off from the position along the outer wall portion 11. Become.
  • the back surface 2b of the solar cell module 2 is located along the outer wall surface 11s so that the outer wall surface 11s and the back surface 2b are close to each other. It will be in the state of being. As a result, for example, it is difficult for the wind to wrap around the back surface 2b side of the solar cell module 2, and vibration and bending are unlikely to occur in the solar cell module 2. As a result, for example, the solar cell element 231 in the solar cell module 2 is less likely to crack, and the output characteristics of the solar cell module 2 are less likely to deteriorate. Therefore, for example, it is possible to reduce the weight of the solar cell module 2 installed in the building 1 and maintain the output characteristics.
  • the adhesive 3B may be adopted as the holding portion 3.
  • the adhesive 3B in the holding step of step Sp2 described above, the outer wall surface 11s and the back surface 2b of the solar cell module 2 are separated by the adhesive 3B.
  • Glue for example, an epoxy-based, acrylic-based, modified silicone-based, urethane-based, chloroprene rubber-based, or silylated urethane-based adhesive is applied to the adhesive material 3B.
  • the adhesive material 3B may include, for example, an adhesive tape.
  • a structural bonding tape such as acrylic foam is applied.
  • the adhesive tape includes, for example, 3M (registered trademark) VHB (registered trademark) tape manufactured by 3M.
  • the back surface 2b of the solar cell module 2 is adhered to the outer wall surface 11s by the adhesive material 3B, so that the adhesive material 3B as the holding portion 3 adheres the outer wall surface 11s and the back surface 2b.
  • the building 100 in is made. If such a configuration is adopted, for example, the solar cell module 2 can be easily installed along the outer wall portion 11. Further, for example, the degree of freedom in the position where the solar cell module 2 is installed along the outer wall portion 11 can be improved. Further, for example, the weight reduction of the solar cell module 2 makes it difficult for the solar cell module 2 to fall off from the position along the outer wall portion 11.
  • the weight of the front protective layer 21 is about 70% of the total weight of the solar cell module.
  • the weight of the aluminum frame can occupy about 10%.
  • the weight ratio of the front protective layer 21 to the total weight of the solar cell module 2 becomes about 4%. , The frame may be unnecessary.
  • the sun is used as compared with the case where a glass substrate having a thickness of 3.2 mm is used for the front protective layer 21.
  • the total weight of the battery module 2 can be about 1/4 to 1/5. In other words, the weight of the solar cell module 2 can be reduced.
  • the load applied to the adhesive 3B fixing the solar cell module 2 to the outer wall surface 11s over a long period of time is significantly reduced, and the gravity direction ( ⁇ Z direction) of the solar cell module 2 on the outer wall surface 11s is reduced. The displacement of the solar cell module 2 and the detachment of the solar cell module 2 from the outer wall portion 11 are less likely to occur.
  • the adhesive 3B as the holding portion 3 may include the first adhesive 31B and the second adhesive 32B.
  • a pressure-sensitive adhesive is applied to the first adhesive 31B.
  • a curable adhesive is applied to the second adhesive 32B.
  • the pressure-sensitive adhesive can bond the adherends to each other by applying pressure at room temperature to bring them into contact with the adherends.
  • an adhesive having adhesiveness an adhesive tape such as double-sided tape having adhesiveness on both sides, or a hook-and-loop fastener having adhesiveness on the back surface are applied.
  • Adhesive tapes include, for example, acrylic foams such as 3M® VHB® tapes manufactured by 3M.
  • a butyl rubber-based, urethane-based, or acrylic-based sealing material may be applied.
  • the curable adhesive can be cured by, for example, condensation, polymerization, or cross-linking to exhibit adhesive strength.
  • the curing type adhesive for example, a moisture curing type, a curing agent mixed type, a photocuring type, a heat curing type, an anaerobic curing type, or the like can be used.
  • Moisture-curable adhesives can, for example, react with moisture in the air to cure.
  • the curing agent mixed type adhesive can be cured by, for example, mixing this agent and a curing agent.
  • the photocurable adhesive includes, for example, an ultraviolet curable adhesive that can be cured by causing a chemical reaction by the energy of the irradiated ultraviolet rays.
  • the curable adhesive is, for example, cured by the above-mentioned chemical reaction or the like, and undergoes a process of solidifying from a liquid to become a rubber-like elastic body or the like.
  • the curing type adhesive includes, for example, a moisture-curing one-component silicone-based adhesive, a curing agent-mixed two-component curing epoxy-based or silicone-based adhesive, and the like.
  • a UV-curable silicone-based adhesive or the like can be used.
  • the two-component curable epoxy adhesive includes, for example, 3M® Scotchweld® manufactured by 3M.
  • 3M® Scotchweld® manufactured by 3M.
  • Such a curable adhesive often exhibits higher adhesive strength even at a higher temperature than the pressure-sensitive adhesive. Therefore, for example, even if the solar cell module 2 is exposed to a high temperature environment, the solar cell module 2 is displaced in the gravity direction ( ⁇ Z direction) on the outer wall surface 11s and the solar cell module 2 is displaced from the outer wall portion 11. It is hard to fall off.
  • the U-shape is formed along the outer wall surface 11s.
  • the outer wall surface 11s and the back surface 2b of the solar cell module 2 are adhered to each other by the first adhesive material 31B arranged in a shape.
  • the first adhesive 31B is formed in a U shape on the outer wall surface 11s. After sticking, it is conceivable to stick the back surface 2b of the solar cell module 2 on the first adhesive 31B. As a result, for example, as shown in FIGS.
  • a region along the second side of the end portion and a region along the third side at the end portion in the ⁇ Z direction are adhered to the outer wall surface 11s by the first adhesive 31B.
  • the solar cell module 2 is removed by the first adhesive 31B attached to the back surface 2b. It may be adhered to the wall surface 11s.
  • the first adhesive 31B arranged in a U shape on the outer wall surface 11s for example, as shown in FIG.
  • the first adhesive 31B is arranged so as to have an annular shape in which a portion in the vertical direction (+ Z direction) is interrupted along the outer wall surface 11s.
  • the first adhesive 31B and the back surface 2b of the solar cell module 2 are arranged in a U shape with the outer wall surface 11s.
  • the space S1 surrounded by and is formed.
  • the second adhesive 32B is allowed to flow into the space S1 to be removed by the second adhesive 32B.
  • the wall surface 11s and the back surface 2b of the solar cell module 2 are adhered to each other.
  • the building 100 is produced.
  • the first adhesive material 31B and the second adhesive material 32B are in a state of adhering the outer wall surface 11s and the back surface 2b.
  • the first adhesive 31B is located in a U shape along the outer wall surface 11s, and the outer wall surface 11s and the back surface 2b are adhered to each other.
  • the second adhesive 32B is located in the space S1 surrounded by the outer wall surface 11s, the first adhesive 31B arranged in a U shape, and the back surface 2b, and is outside.
  • the wall surface 11s and the back surface 2b are adhered to each other. If such a configuration is adopted, for example, the solar cell module 2 can be installed more stably along the outer wall portion 11.
  • the thickness of the first adhesive 31B is large, it is conceivable to arrange the terminal box of the solar cell module 2 in the space S1.
  • one or more holders 3C which are in a state of protruding from the outer wall surface 11s toward the outside of the building 1 may be adopted as the holding portion 3.
  • a split pin 31C for building materials may be adopted.
  • the material of the cotter pin 31C for example, a steel material subjected to stainless steel, brass, aluminum or hot dip galvanizing, aluminum plating or hot dip galvanized aluminum is applied.
  • the cotter pin 31C has, for example, a shape in which one rod-shaped member is folded back.
  • the cotter pin 31C has, for example, an annular shape at a folded portion.
  • one or more holders 3C project from the outer wall surface 11s toward the outside of the building 1.
  • Prepare building 1 so that it is in the state of being.
  • the outer wall portion 11 and one or more holders 3C as holding portions 3 for holding the solar cell module 2 so that the back surface 2b is located along the outer wall surface 11s of the outer wall portion 11.
  • Such a structure 1 can be prepared, for example, by attaching one or more holders 3C to the outer wall material constituting the outer wall portion 11 in advance. Then, for example, as shown in FIGS.
  • the structure 100 includes, for example, one or more holders 3C, and the solar cell module 2 is held by one or more holders 3C. If such a configuration is adopted, for example, the solar cell module 2 can be easily installed along the outer wall portion 11. Further, for example, since the holder 3C is provided in advance on the outer wall portion 11, the position where the solar cell module 2 is installed can be easily set along the outer wall portion 11. As a result, for example, workability when installing the solar cell module 2 along the outer wall portion 11 can be improved.
  • one or more holders 3C include a plurality of rod-shaped portions (also referred to as rod-shaped portions) such as the split pin 31C.
  • each split pin 31C includes two rod-shaped portions 311C and 312C.
  • the plurality of rod-shaped portions 311C and 312C are in a state of protruding from the outer wall surface 11s, respectively.
  • one or more holders 3C are in a state of protruding from the outer wall surface 11s toward the outside of the building 1, and when bent, the back surface is along the outer wall surface 11s of the outer wall portion 11.
  • a building 1 including a plurality of rod-shaped portions 311C and 312C for sandwiching the solar cell module 2 in which the 2b is located with the outer wall surface 11s is prepared.
  • a through hole is formed in the outer wall material by drilling or punching with a tool such as a drill, and the two rod-shaped portions 311C and 312C of the split pin 31C are inserted into the through hole to hold the outer wall material.
  • the two rod-shaped portions 311C and 312C of the split pin 31C as the tool 3C are in a state of protruding from the outer wall surface 11s toward the outside of the building 1.
  • the through hole is sealed with a caulking material or the like with the two rod-shaped portions 311C and 312C of the split pin 31C inserted, for example.
  • the solar cell module 2 is arranged so that the back surface 2b is located along the outer wall surface 11s, and FIG. ),
  • the plurality of rod-shaped portions 311C and 312C are bent.
  • each of the plurality of rod-shaped portions 311C and 312C and the outer wall surface 11s are in a state of sandwiching the solar cell module 2.
  • the deformation for bending the plurality of rod-shaped portions 311C and 312C may be, for example, plastic deformation.
  • each of the plurality of rod-shaped portions 311C and 312C protrudes from the outer wall surface 11s and is bent, and the plurality of rod-shaped portions 311C , 312C and the outer wall surface 11s are in a state of sandwiching the solar cell module 2. If such a configuration is adopted, for example, the amount of material of the holding portion 3 can be reduced.
  • the solar cell module 2 when the solar cell module 2 is arranged so that the back surface 2b is located along the outer wall surface 11s, a plurality of split pins are used.
  • the split pins also referred to as penetration split pins
  • the solar cell module 2 may be penetrated by a plurality of rod-shaped portions 311C and 312C.
  • the solar cell module 2 is penetrated by the plurality of rod-shaped portions 311C and 312C, and the plurality of rod-shaped portions 311C and 312C are bent to form a plurality of rods.
  • each of the portions 311C and 312C and the outer wall surface 11s can be in a state of sandwiching the solar cell module 2.
  • each of the plurality of rod-shaped portions 311C and 312C is in a state of penetrating the solar cell module 2.
  • FIGS. 17 (c) and 18 shows an example in which two through-split pins 31Ca are provided for one solar cell module 2. In this way, for example, by penetrating the solar cell module 2 through the plurality of rod-shaped portions 311C and 312C, the solar cell module 2 can be installed more stably along the outer wall portion 11.
  • the plurality of split pins 31C For at least a part of the split pins (also referred to as non-penetrating split pins) 31Cb, it is not necessary to penetrate the solar cell module 2 by the plurality of rod-shaped portions 311C and 312C. In this case, for example, as shown in FIG. 17B, when the solar cell module 2 is arranged so that the back surface 2b is located along the outer wall surface 11s, the plurality of split pins 31C for at least a part of the split pins (also referred to as non-penetrating split pins) 31Cb, it is not necessary to penetrate the solar cell module 2 by the plurality of rod-shaped portions 311C and 312C. In this case, for example, as shown in FIG.
  • the holder 3C may have a structure in which the solar cell module 2 can be arranged by inserting the solar cell module 2 so as to be inserted, for example.
  • one or more holders 3C may include a first holder 32C and a second holder 33C.
  • each of the first holder 32C and the second holder 33C is in the horizontal direction as the first direction along the outer wall surface 11s (here, the Y-axis direction).
  • the first holder 32C and the second holder 33C are inclined within several degrees with respect to the horizontal direction (Y-axis direction) as the first direction, for example. good.
  • the first holder 32C and the second holder 33C are in the second direction (here, the Z-axis direction as the vertical direction) orthogonal to the first direction (Y-axis direction) along the outer wall surface 11s.
  • the first holder 32C and the second holder 33C are separated from each other in the second direction (Z-axis direction).
  • the first holder 32C has a groove-shaped portion (also referred to as a first groove portion) G1 along the first direction (Y-axis direction) in a portion facing the second holder 33C.
  • the first groove portion G1 is located in a portion of the first holder 32C that faces the downward direction ( ⁇ Z direction), which is the direction of gravity.
  • the second holder 33C has a groove-shaped portion (also referred to as a second groove portion) along the first direction (Y-axis direction) with respect to the portion facing the first holder 32C.
  • the second groove portion G2 is located in a portion of the second holder 33C facing upward (+ Z direction) in the vertical direction.
  • Each of the first holder 32C and the second holder 33C is in a state of penetrating the outer wall portion 11 and being fixed to the outer wall portion 11, for example.
  • Each of the first holder 32C and the second holder 33C may be arranged so as to penetrate the outer wall portion 11 when, for example, a plurality of outer wall materials constituting the outer wall portion 11 are combined in a plane.
  • the solar cell module 2 includes the first end portion E1 and the second end portion E2 which are connected to the front surface 2f and the back surface 2b and are parallel to each other.
  • the first end portion E1 and the second end portion E2 may have, for example, a substantially parallel relationship having an inclination within about several degrees from a completely parallel relationship.
  • FIG. 20A the outer edge of the solar cell module 2 before being inserted into the first holder 32C and the second holder 33C is drawn by a thin two-dot chain line, and the first holder 32C And the solar cell module 2 after being inserted so as to be inserted into the second holder 33C are drawn by a solid line.
  • the solar cell module 2 has a substantially rectangular shape when viewed in a plan view facing the ⁇ X direction.
  • the first end portion E1 is located along a side (also referred to as an upper side) in the vertical direction (+ Z direction) of the solar cell module 2, and is longitudinal along the first direction (Y-axis direction).
  • the second end portion E2 is located along the side (also referred to as the lower side) in the gravity direction (-Z direction) of the solar cell module 2, and has a longitudinal direction along the first direction (Y-axis direction).
  • the solar cell module is formed in the first groove portion G1 along the first direction (Y-axis direction).
  • the first end portion E1 of 2 is inserted, and the second end portion E2 on the opposite side of the first end portion E1 of the solar cell module 2 is inserted into the second groove portion G2.
  • the solar cell module 2 can be held by the first holder 32C and the second holder 33C.
  • the stopper member is fitted to at least one of the first holder 32C and the second holder 33C so that the solar cell module 2 is hard to come off from the first holder 32C and the second holder 33C.
  • the solar cell module 2 has a first end portion E1 inserted into the first groove portion G1 and a second end portion E2 into the second groove portion G2 along the first direction (Y-axis direction).
  • the first end portion E1 of the solar cell module 2 is inserted into the first groove portion G1 along the first direction (Y-axis direction).
  • the solar cell module 2 can be easily installed along the outer wall portion 11. can.
  • the first direction as the longitudinal direction of the first holder 32C and the second holder 33C is a gravity direction different from the horizontal direction.
  • Z-axis direction may be used.
  • the first holder 32C and the second holder 33C face each other in the horizontal direction (Y-axis direction) as the second direction orthogonal to the gravity direction (Z-axis direction) along the outer wall surface 11s. And each of them is in a state of protruding from the outer wall surface 11s toward the outside of the building 1.
  • the first holder 32C has a first groove portion G1 along the first direction (Z-axis direction) at a portion facing the second holder 33C
  • the second holder 33C has a first groove portion G1.
  • the portion facing the holder 32C has a second groove portion G2 along the first direction (Z-axis direction).
  • the outer edge of the solar cell module 2 before being inserted into the first holder 32C and the second holder 33C is drawn by a thin two-dot chain line
  • the first holder 32C And the solar cell module 2 after being inserted so as to be inserted into the second holder 33C are drawn by a solid line.
  • FIG. 22A the outer edge of the solar cell module 2 before being inserted into the first holder 32C and the second holder 33C is drawn by a thin two-dot chain line
  • the first holder 32C And the solar cell module 2 after being inserted so as to be inserted into the second holder 33C are drawn by a solid line.
  • the solar cell module 2 has a substantially rectangular shape when viewed in a plan view facing the ⁇ X direction.
  • the first end portion E1 is located along the side (also referred to as the left side) in the horizontal left direction (-Y direction) of the solar cell module 2, and is located along the first direction (Z-axis direction).
  • the second end portion E2 is located along the side (also referred to as the right side) in the horizontal right direction (+ Y direction) of the solar cell module 2, and is longitudinal along the first direction (Z-axis direction).
  • the solar cell module is formed in the first groove portion G1 along the first direction (Z-axis direction).
  • the first end portion E1 of 2 is inserted, and the second end portion E2 on the opposite side of the first end portion E1 of the solar cell module 2 is inserted into the second groove portion G2.
  • the solar cell module 2 can be held by the first holder 32C and the second holder 33C. In this way, for example, the building 100 can be completed.
  • the first end portion E1 is inserted into the first groove portion G1 and the second end portion E2 is inserted into the second groove portion G2 along the first direction (Z-axis direction).
  • the first direction Z-axis direction
  • a holding mechanism 3D that sandwiches the peripheral edge portion of the solar cell module 2 may be adopted as the holding portion 3.
  • the holding mechanism 3D includes, for example, a first clamp member 34D and a second clamp member 35D, as shown in FIGS. 23 (a) and 23 (b).
  • the first clamp member 34D is a portion of the building 1 located above the outer wall portion 11 (also the first mounted portion). It is in a state of being suspended by a first member 34sD such as a wire.
  • each of the two first clamp members 34D is suspended from the eaves R0 as the first attachment portion by the first member 34sD. It is in. Further, for example, as shown in FIGS.
  • the second clamp member 35D is a portion (second mounted) of the building 1 located below the outer wall portion 11. It is in a state of being attached to a second member 35sD such as a wire.
  • each of the two second clamp members 35D is attached to the foundation portion G0 as the second attachment portion via the second member 35sD. ..
  • the foundation portion G0 may be, for example, a base portion included in the building 1 or the ground of the land on which the building 1 is constructed.
  • the first clamp member 34D and the second clamp member 35D may have, for example, similar configurations or different configurations.
  • an example of the configuration of the first clamp member 34D and the second clamp member 35D will be described.
  • each of the first clamp member 34D and the second clamp member 35D has, for example, a main body portion 341D and a fastening portion 342D.
  • the main body portion 341D includes, for example, a first portion Po1, a second portion Po2, and a third portion Po3.
  • the first portion Po1 and the second portion Po2 are, for example, in a state of being parallel to each other and separated from each other.
  • the third portion Po3 is, for example, in a state where the first portion Po1 and the second portion Po2 are connected.
  • the first portion Po1, the third portion Po3, and the second portion Po2 are positioned so as to form a U shape in the order of this description.
  • the main body portion 341D may have, for example, a structure in which one plate-shaped member is bent in a U shape.
  • the second portion Po2 has, for example, a through hole that penetrates in the thickness direction and has a female screw portion on the inner peripheral portion.
  • the fastening portion 342D includes, for example, a fourth portion Po4, a fifth portion Po5, and a sixth portion Po6.
  • the fourth portion Po4 is, for example, a rod-shaped portion having a male screw portion that is fitted to the female screw portion of the through hole of the second portion Po2.
  • the fifth portion Po5 is connected to, for example, the first end portion in the longitudinal direction of the fourth portion Po4 and is located between the first portion Po1 and the second portion Po2.
  • the sixth portion Po6 is connected to, for example, a portion of the fourth portion Po4 near the second end opposite to the first end in the longitudinal direction, and the fourth portion Po4 is rotated in the circumferential direction. It has the role of a handle to make it.
  • the distance between the first portion Po1 and the fifth portion Po5 is changed by rotating the sixth portion Po6, respectively.
  • the first portion Po1 and the fifth portion Po5 sandwich various objects (also referred to as sandwiched objects) located in the space SL1 between the first portion Po1 and the fifth portion Po5. be able to.
  • the portion of the first portion Po1 facing the fifth portion Po5 and the portion of the fifth portion Po5 facing the first portion Po1 each have an uneven shape, rubber, or the like. If it is present, slippage is less likely to occur between the first portion Po1 and the fifth portion Po5 and the object to be sandwiched.
  • the holding mechanism 3D when the holding mechanism 3D is adopted as the holding portion 3, for example, as shown in FIGS. 23 (a) and 23 (b), in the preparation step of the above-mentioned step Sp1, the holding mechanism 3D
  • the building 1 having the above is prepared. Specifically, for example, the first clamp member 34D suspended from the first mounted portion located above the outer wall portion 11 of the building 1 by the first member 34sD, and the building.
  • a building 1 having a second clamp member 35D attached by a second member 35sD to a second attachment portion located below the outer wall portion 11 of 1 is prepared.
  • the holding step of step Sp2 described above for example, as shown in FIGS.
  • the first clamp member 34D is located along the outer wall surface 11s and the solar cell module 2
  • the first peripheral edge portion P1 of the solar cell module 2 is sandwiched
  • the second clamp member 35D is positioned along the outer wall surface 11s and sandwiches the second peripheral edge portion P2 of the solar cell module 2.
  • the first peripheral edge P1 is located at the upper end of the solar cell module 2 in the vertical direction, for example, when the solar cell module 2 whose back surface 2b is located along the outer wall surface 11s is viewed in a plan view in the ⁇ X direction. The part along the edge is adopted.
  • the second peripheral edge portion P2 is, for example, a portion of the solar cell module 2 opposite to the first peripheral edge portion P1.
  • the second peripheral edge portion P2 for example, when the solar cell module 2 in which the back surface 2b is located along the outer wall surface 11s is viewed in a plan view in the ⁇ X direction, the direction of gravity of the solar cell module 2 The part along the edge located at the lower end of the is adopted.
  • the two first clamp members 34D sandwich both ends of the first peripheral edge portion P1 located on the upper end side in the vertical direction of the solar cell module 2. Is in a state of being.
  • the two second clamp members 35D are in a state of sandwiching both end portions of the second peripheral edge portion P2 located on the lower end side in the gravity direction of the solar cell module 2.
  • the four corners of the solar cell module 2 are sandwiched by the two first clamp members 34D and the two second clamp members 35D.
  • the solar cell module 2 is stably held along the outer wall surface 11s by the holding mechanism 3D. ..
  • the building 100 can be manufactured.
  • the first clamp member 34D is located along the outer wall surface 11s and sandwiches the first peripheral edge portion P1 of the solar cell module 2.
  • the second clamp member 35D is located along the outer wall surface 11s and sandwiches the second peripheral edge portion P2 of the solar cell module 2.
  • the first peripheral edge portion P1 of the solar cell module 2 is sandwiched by the first clamp member 34D, and the solar cell is used.
  • the solar cell module 2 can be easily installed along the outer wall portion 11.
  • first clamp member 34D and the second clamp member 35D constituting the holding mechanism 3D may be arranged in advance along the outer wall surface 11s.
  • first clamp member 34D and the second clamp member 35D may be adhered to the outer wall surface 11s with an adhesive or the like, or may be fixed to the outer wall portion 11 with a fastening member or the like.
  • the outer wall portion 11 is output from the output portion 211 of the solar cell module 2 held by the holding portion 3 so that the back surface 2b is located along the outer wall surface 11s, for example.
  • a portion (also referred to as a power receiving unit) 111 for receiving electricity to be generated may be included in advance.
  • the solar cell module 2 along the outer wall portion 11, it is possible to make it possible to transmit power from the solar cell module 2 to the building 1.
  • various configurations for outputting electricity obtained by photoelectric conversion in the solar cell module 2 can be applied to the output unit 211.
  • a configuration having a positive electrode electrode terminal (also referred to as a first output terminal) 211p and a negative electrode electrode terminal (also referred to as a second output terminal) 211n is applied to the output unit 211.
  • various configurations for receiving electricity output from the output unit 211 of the solar cell module 2 can be applied to the power receiving unit 111.
  • the power receiving unit 111 is connected to, for example, a terminal to which the first output terminal 211p is connected (also referred to as a first power receiving terminal) 111p and a terminal to which the second output terminal 211n is connected (also referred to as a second power receiving terminal). ) 111n is applied.
  • the methods for connecting the first output terminal 211p and the first power receiving terminal 111p and the connection between the second output terminal 211n and the second power receiving terminal 111n include, for example, a connector type, a pin terminal type, a button type, and a slide insertion type. Any of the methods can be applied.
  • the connector type is a method of connecting using a connector.
  • the pin terminal type is a method of connecting using pin terminals.
  • the button type is a method of connecting by fitting a convex terminal and a concave terminal.
  • the slide insertion type is a method of connecting by inserting the insertion plug into the plug receiver (also called an outlet).
  • the shape of the first power receiving terminal 111p and the shape of the second power receiving terminal 111n are slightly different, and the shape of the first output terminal 211p and the shape of the second output terminal 211n are slightly different.
  • the work of connecting the first power receiving terminal 111p and the first output terminal 211p and the work of connecting the second power receiving terminal 111n and the second output terminal 211n become easy.
  • the building 1 is prepared so that the outer wall portion 11 includes the power receiving portion 111 that receives electricity. do.
  • the power receiving portion 111 is arranged or attached to the outer wall material.
  • the solar cell module 2 is prepared so that the solar cell module 2 includes an output unit 211 that outputs electricity.
  • the output unit 211 is brought into a state where power can be output to the power receiving unit 111.
  • the output unit 211 can output power to the power receiving unit 111, for example, as shown in FIGS. 26 (a) and 26 (b), the first output terminal 211p and the first power receiving terminal 111p Is connected and the second output terminal 211n and the second power receiving terminal 111n are connected.
  • the building 100 is produced.
  • the outer wall portion 11 includes a power receiving unit 111 that receives electricity
  • the solar cell module 2 includes an output unit 211 that outputs electricity
  • the output unit 211 outputs electric power to the power receiving unit 111. can. If such a configuration is adopted, for example, when the solar cell module 2 is installed along the outer wall portion 11, the solar cell module 2 can easily send electricity to the building 1. can.
  • the power receiving unit 111 connects the first power receiving terminal 111p and the second power receiving terminal 111n.
  • the solar cell module 2 is prepared so that the output unit 211 includes the first output terminal 211p and the second output terminal 211n.
  • the power receiving unit 111 includes a first power receiving terminal 111p for connecting the first output terminal 211p and a second power receiving terminal 111n for connecting the second output terminal 211n.
  • Building 1 is prepared.
  • the first power receiving terminal 111p and the second power receiving terminal 111n each have terminals embedded in the outer wall portion 11 and exposed to the outside on the outer wall surface 11s (appropriately collectively referred to as power receiving terminals). Applies. Further, for example, terminals exposed to the outside on the back surface 2b of the solar cell module 2 (appropriately collectively referred to as output terminals) are applied to the first output terminal 211p and the second output terminal 211n, respectively.
  • the power receiving unit 111 includes the first power receiving terminal 111p and the second power receiving terminal 111n
  • the output unit 211 includes the first output terminal 211p and the second output terminal 211n.
  • the first power receiving terminal 111p and the first output terminal 211p are connected, and the second power receiving terminal 111n and the second output terminal 211n are connected. If such a configuration is adopted, for example, when the solar cell module 2 is installed along the outer wall portion 11, the solar cell module 2 and the building 1 can be easily connected.
  • the first power receiving terminal 111p includes the first recess R1 and the second power receiving terminal 111n.
  • the second recess R2 is included.
  • Each of the first recess R1 and the second recess R2 has conductivity and is recessed in the ⁇ X direction.
  • the first output terminal 211p includes the first convex portion D1
  • the second output terminal 211n includes the second convex portion D2.
  • each of the first convex portion D1 and the second convex portion D2 has conductivity and is in a state of protruding from the back surface 2b in the ⁇ X direction.
  • the first power receiving terminal 111p is for connecting the first output terminal 211p to the first power receiving terminal 111p by fitting the first convex portion D1.
  • the second power receiving terminal 111n includes, for example, a second concave portion R2 for connecting the second output terminal 211n to the second power receiving terminal 111n by fitting the second convex portion D2.
  • the first power receiving terminal 111p and the first output terminal 211p are electrically connected by fitting the first convex portion D1 to the first concave portion R1.
  • the second power receiving terminal 111n and the second output terminal 211n are electrically connected by fitting the second convex portion D2 into the second concave portion R2.
  • the building 100 is produced.
  • the first convex portion D1 included in the first output terminal 211p is fitted into the first concave portion R1 included in the first power receiving terminal 111p, so that the first output terminal is used.
  • 211p is connected to the first power receiving terminal 111p.
  • the second convex portion D2 included in the second output terminal 211n is fitted into the second concave portion R2 included in the second power receiving terminal 111n, so that the second output terminal 211n receives the second power. It is in a state of being connected to the terminal 111n. If such a configuration is adopted, for example, when the solar cell module 2 is installed along the outer wall portion 11, the solar cell module 2 and the building 1 can be easily connected.
  • the outer wall portion 11 is a plurality of solar cells.
  • a plurality of power receiving units 111 for receiving electricity output from the module 2 may be included.
  • the outer wall portion 11 receives electricity as the first power receiving unit 111 as two power receiving units 111 for receiving electricity, respectively.
  • the unit 1111 and the second power receiving unit 1112 are included.
  • the first power receiving unit 1111 is, for example, from the first output unit 2111 as the output unit 211 of the first solar cell module 2A held by the holding unit 3 so that the back surface 2b is located along the outer wall surface 11s. It is a part for receiving the output electricity.
  • the second power receiving unit 1112 is, for example, a second output unit as an output unit 211 of the second solar cell module 2B held by the holding unit 3 so that the back surface 2b is located along the outer wall surface 11s. This is a part for receiving electricity output from 2112.
  • the outer wall portion 11 receives electricity output from each of the output portions 211 of the two solar cell modules 2 held by the holding portion 3 so that the back surface 2b is located along the outer wall surface 11s.
  • the first power receiving unit 1111 and the second power receiving unit 1112 are included.
  • the outer edge of the region where each of the first solar cell module 2A and the second solar cell module 2B is installed is drawn by a thin two-dot chain line.
  • two solar cell modules 2 including the first solar cell module 2A and the second solar cell module 2B are prepared.
  • the first solar cell module 2A has a first output unit 2111 that outputs electricity
  • the second solar cell module 2B includes a second output unit 2112 that outputs electricity.
  • the holding portion 3 holds the first solar cell module 2A so that the back surface 2b of the first solar cell module 2A is located along the outer wall surface 11s, and the outer wall surface 11s holds the first solar cell module 2A.
  • the second solar cell module 2B is held by the holding portion 3 so that the back surface 2b of the second solar cell module 2B is located along the line.
  • the first output unit 2111 can output power to the first power receiving unit 1111 and the second output unit 2112 can output power to the second power receiving unit 1112.
  • the building 100 includes, for example, two solar cell modules 2 including a first solar cell module 2A and a second solar cell module 2B.
  • the first solar cell module 2A is in a state of being held by the holding portion 3 so that the back surface 2b of the first solar cell module 2A is located along the outer wall surface 11s.
  • the second solar cell module 2B is in a state of being held by the holding portion 3 so that the back surface 2b of the second solar cell module 2B is located along the outer wall surface 11s.
  • the first output unit 2111 can output power to the first power receiving unit 1111
  • the second output unit 2112 can output power to the second power receiving unit 1112.
  • the outer wall portion 11 may include a wiring portion 112 in a state in which the first power receiving unit 1111 and the second power receiving unit 1112, which receive electricity, are connected to each other. ..
  • the outer edge of the area where each of the first solar cell module 2A and the second solar cell module 2B is installed is drawn by a thin two-dot chain line, and the wiring portion 112 is drawn by a thick broken line.
  • the wiring portion 112 may be located, for example, on the side opposite to the outer wall surface 11s of the outer wall material constituting the outer wall portion 11, or may be located inside the outer wall portion 11. In the example of FIG.
  • the wiring unit 112 connects the first power receiving terminal 111p of the first power receiving unit 1111 and the second power receiving terminal 111n of the second power receiving unit 1112.
  • the wiring portion 112 may be, for example, a cable or a conductor such as a linear or strip-shaped metal.
  • the wiring portion 112 can be prepared, for example, by being appropriately attached when manufacturing the outer wall material constituting the outer wall portion 11.
  • the outer wall portion 11 includes the first power receiving unit 1111 and the second power receiving unit 1112, and the first power receiving unit 1111 and the second power receiving unit. Includes a wiring unit 112, which is in a state of being connected to 1112.
  • the first power receiving terminal 111p has the first hook portion F1 and the second power receiving terminal 111n has the second hook portion F2.
  • the first output terminal 211p may have a third hook portion F3 and the second output terminal 211n may have a fourth hook portion F4.
  • the solar cell module 2 is slid along the outer wall surface 11s with the back surface 2b close to the outer wall surface 11s, and the third hook portion F3 is fitted to the first hook portion F1.
  • the first output terminal 211p can be connected to the first power receiving terminal 111p
  • the second output terminal 211n can be connected to the second power receiving terminal 111n by fitting the fourth hook portion F4 to the second hook portion F2.
  • each of the first hook portion F1 and the second hook portion F2 has an L-shape protruding from the outer wall surface 11s in the + X direction and then in the + Z direction.
  • each of the third hook portion F3 and the fourth hook portion F4 has an L-shaped cross section protruding from the back surface 2b in the ⁇ X direction and then in the ⁇ Z direction. Therefore, the third hook portion F3 has a first convex portion D1 protruding in the ⁇ Z direction, and the fourth hook portion F4 has a second convex portion D2 protruding in the ⁇ Z direction. Then, for example, with the back surface 2b close to the outer wall surface 11s, the solar cell module 2 is slid along the outer wall surface 11s in the direction of gravity ( ⁇ Z direction) to the first recess R1 of the first hook portion F1.
  • the first convex portion D1 of the third hook portion F3 can be fitted, and the second convex portion D2 of the fourth hook portion F4 can be fitted into the second concave portion R2 of the second hook portion F2.
  • the first output terminal 211p can be connected to the first power receiving terminal 111p
  • the second output terminal 211n can be connected to the second power receiving terminal 111n.
  • the first convex portion D1 may be firmly held in the first concave portion R1 by an elastic body such as a plate-shaped spring located in the first concave portion R1, or in the second concave portion R2.
  • the second convex portion D2 may be firmly held in the second concave portion R2 by an elastic body such as a plate-shaped spring located at.
  • a fifth hook portion F5 having a groove-shaped third recess R3 is positioned in a portion of the outer wall portion 11 along the outer wall surface 11s.
  • the power receiving terminal and the output terminal may be connected by inserting the end portion E connecting the front surface 2f and the back surface 2b of the solar cell module 2 into the third recess R3.
  • the first power receiving terminal 111p located in the third recess R3 and the first output terminal 211p located in the back surface 2b of the solar cell module 2 are connected and inside the third recess R3.
  • the fifth hook portion F5 is located, for example, along the Y-axis direction.
  • the third recess R3 includes, for example, a groove-shaped recess that is recessed in the gravity direction ( ⁇ Z direction) and is located along the Y-axis direction.
  • the fifth hook portion F5 may be continuously present along the Y-axis direction, or may be present in a state of being divided into a plurality of portions.
  • each of the first output terminal 211p and the second output terminal 211n is located in the vicinity of the end portion E of the back surface 2b.
  • the first output terminal 211p and the second output terminal are located near the end E at the lower end of the solar cell module 2 in the gravity direction ( ⁇ Z direction).
  • 211n is located.
  • the front surface 2f of the solar cell module 2 is pushed in the third recess R3 by an elastic body such as a plate-shaped spring located in the third recess R3, so that the first power receiving terminal 111p is moved to the first power receiving terminal 111p.
  • the 1 output terminal 211p may be pressed, or the second output terminal 211n may be pressed against the second power receiving terminal 111n.
  • a member (also referred to as a connecting member) in which the power receiving terminal of the outer wall portion 11 and the output terminal of the solar cell module 2 are separate bodies having conductivity. ) May be electrically connected.
  • FIG. 30A the outer edge of the region where each of the first solar cell module 2A and the second solar cell module 2B is installed is drawn by a thin two-dot chain line.
  • the power receiving portion 111 of the outer wall portion 11 is the first.
  • the power receiving portion 111 of the outer wall portion 11 includes a power receiving terminal having a recess.
  • the power receiving terminal included in the power receiving unit 111 has a recess for fitting a connecting member penetrating the output terminal.
  • the first power receiving terminal 111p of the power receiving unit 111 has a first recess R1 for fitting the first connecting member B1 penetrating the first output terminal 211p.
  • the second power receiving terminal 111n of the power receiving unit 111 has a second recess R2 for fitting the second connecting member B2 penetrating the second output terminal 211n.
  • the output unit 211 includes the first output terminal 211p and the second output terminal 211n.
  • the output unit 211 of the solar cell module 2 includes an output terminal. Then, for example, as shown in FIGS. 31 (a) and 31 (b), in the holding step of step Sp2 described above, the first connecting member B1 penetrates the first output terminal 211p and the first connecting member.
  • the first power receiving terminal 111p and the first output terminal 211p are electrically connected.
  • the second power receiving terminal 111n and the second output terminal 211n are electrically connected by penetrating the second output terminal 211n by the second connecting member B2 and fitting the second connecting member B2 into the second recess R2.
  • the power receiving element and the output terminal are electrically connected by penetrating the output terminal by a connecting member and fitting the connecting member into the recess of the power receiving element. As a result, the building 100 is produced.
  • the power receiving unit 111 includes, for example, a first power receiving terminal 111p having a first recess R1 and a second power receiving terminal 111n having a second recess R2.
  • the power receiving unit 111 includes a power receiving terminal having a recess.
  • the output unit 211 of the solar cell module 2 includes, for example, a first output terminal 211p and a second output terminal 211n.
  • the output unit 211 includes, for example, an output terminal.
  • the first power receiving terminal 111p and the first output terminal 211p are electrically connected by penetrating the first output terminal 211p and fitting into the first recess R1.
  • the first connecting member B1 in the state of being in the state is provided. Further, in the building 100, for example, the second output terminal 111n and the second output terminal 211n are electrically connected by penetrating the second output terminal 211n and fitting into the second recess R2.
  • the second connecting member B2 in the state of being in the state of being provided is provided.
  • the building 100 includes a connecting member that penetrates the output terminal and is fitted in the recess to electrically connect the power receiving terminal and the output terminal. There is. If such a configuration is adopted, for example, when the solar cell module 2 is installed along the outer wall portion 11, the solar cell module 2 and the building 1 can be easily connected.
  • a hole recessed in the ⁇ X direction is applied to each of the first recess R1 and the second recess R2.
  • a conductive fastening member such as a screw, a screw, or a nail made of metal or the like is applied to each of the first connecting member B1 and the second connecting member B2.
  • a plate-shaped conductor or a conductor having a through hole penetrating in the X-axis direction is applied.
  • the through hole of the first output terminal 211p may exist in the first output terminal 211p before the first connecting member B1 is penetrated, or when the first connecting member B1 is penetrated, the first through hole may be present in the first output terminal 211p. It may be formed at the output terminal 211p.
  • the through hole of the second output terminal 211n may exist in the second output terminal 211n before the second connecting member B2 is penetrated, or when the second connecting member B2 is penetrated, the second output terminal 211n may be present in the second output terminal 211n. It may be formed at the output terminal 211n.
  • the first connecting member B1 when the first recess R1 has a female screw portion on the inner peripheral portion, the first connecting member B1 has a screw or a screw having a shaft portion having a male screw portion and a head portion. Applies.
  • the male screw portion of the first connecting member B1 penetrates the first output terminal 211p and fits into the female screw portion of the first recess R1, so that the first connecting member B1 can be formed.
  • the first power receiving terminal 111p and the first output terminal 211p can be electrically connected.
  • the second recess R2 has a female screw portion on the inner peripheral portion, a screw or screw having a shaft portion having a male screw portion and a head portion is applied to the second connecting member B2.
  • the male screw portion of the second connecting member B2 penetrates the second output terminal 211n and fits into the female screw portion of the second recess R2, whereby the second connecting member B2 becomes ,
  • the second power receiving terminal 111n and the second output terminal 211n can be electrically connected.
  • a configuration may be adopted in which the output of electricity and the reception of electricity between the solar cell module 2 and the outer wall portion 11 are performed by wireless power supply (wireless power supply).
  • the power receiving unit 111 wirelessly receives electricity (also referred to as receiving power).
  • the structure 1 is prepared so as to include an element (also referred to as a power receiving element) 111r capable of forming the structure.
  • the solar cell module 2 is prepared so that the output unit 211 includes an element (also referred to as a power transmission element) 211o capable of wirelessly transmitting electricity (also referred to as power transmission).
  • the power receiving unit 111 of the outer wall portion 11 includes a power receiving element 111r for wirelessly receiving electricity from the power transmission element 211o in a state of being close to the power transmission element 211o.
  • the output unit 211 of the solar cell module 2 includes a power transmission element 211o capable of transmitting electricity wirelessly.
  • FIG. 32A the outer edge of the region where each of the first solar cell module 2A and the second solar cell module 2B is installed is drawn by a thin two-dot chain line.
  • the power receiving element 111r may be located inside the outer wall portion 11, or may be exposed to the outside of the outer wall portion 11 on the outer wall surface 11s of the outer wall portion 11.
  • a method of arranging the power receiving element 111r in the outer wall portion 11 for example, a hole is formed by drilling in the outer wall material constituting the outer wall portion 11, the power receiving element 111r is arranged in the hole, and then the power receiving element 111r is sealed with a caulking material or the like.
  • a method of stopping is conceivable.
  • the power transmission element 211o may be located inside the solar cell module 2, for example. Specifically, for example, it is conceivable that the power transmission element 211o is located between the front surface protective layer 21 and the back surface protection layer 22 of the solar cell module 2.
  • the power receiving element 111r and the power transmitting element 211o are brought close to each other to receive power from the power transmitting element 211o.
  • the element 111r is set to be in a state where power can be transmitted wirelessly.
  • the building 100 is produced.
  • the power receiving unit 111 of the outer wall portion 11 includes a power receiving element 111r capable of receiving electricity wirelessly.
  • the output unit 211 of the solar cell module 2 includes a power transmission element 211o capable of transmitting electricity wirelessly.
  • the power transmission element 211o is close to the power receiving element 111r and can wirelessly transmit power to the power receiving element 111r. If such a configuration is adopted, for example, when the solar cell module 2 is installed along the outer wall portion 11, the solar cell module 2 can be easily arranged by arranging the solar cell module 2 at a preset position. It is possible to make it possible to transmit power to the building 1.
  • the outer wall portion 11 may include the wiring portion 112 in a state where the first power receiving unit 1111 and the second power receiving unit 1112 are connected.
  • the wiring portion 112 is drawn with a thick broken line.
  • the wiring unit 112 electrically connects the power receiving element 111r of the first power receiving unit 1111 and the power receiving element 111r of the second power receiving unit 1112. If such a configuration is adopted, for example, since the wiring connecting between the plurality of solar cell modules 2 is located on the outer wall portion 11, it is less likely to be exposed to wind, rain and sunlight, and is less likely to deteriorate. Further, for example, when the solar cell module 2 is installed along the outer wall portion 11, the connection between the plurality of solar cell modules 2 becomes easy.
  • step Sp2 in the holding step of step Sp2 described above, two adjacent solar cell modules 2 are used.
  • a certain first solar cell module 2A and a second solar cell module 2B are held by the holding portion 3 so that the back surface 2b is located along the outer wall surface 11s of the outer wall portion 11 in a state of being electrically connected to each other.
  • the wiring is exposed to the outside by electrically connecting the first solar cell module 2A and the second solar cell module 2B to each other in a state of being close to each other without using a cable. Is reduced, and deterioration of wiring is less likely to occur.
  • each solar cell module 2 has a first side surface 2e1 and a second side surface 2e2 located on opposite sides of each other.
  • each of the two solar cell modules 2 including the first solar cell module 2A and the second solar cell module 2B prepared in the preparation step of step Sp1 described above is shown in FIG. 35 (a), for example. It has a first terminal box J1 and a second terminal box J2, which are located on the back surface 2b, respectively.
  • the first terminal box J1 is located on the back surface 2b along the first side surface 2e1 and has a terminal portion (also referred to as a first output terminal portion) T1 of the first electrode.
  • the second terminal box J2 is located on the back surface 2b along the second side surface 2e2, and is the terminal portion (second output terminal) of the second electrode opposite to the first electrode. It has T2 (also called a part).
  • T2 also called a part
  • the first side surface 2e1 of the first solar cell module 2A and the second side surface 2e2 of the second solar cell module 2B are brought close to each other.
  • the first output terminal portion T1 of the first solar cell module 2A and the second output terminal portion T2 of the second solar cell module 2B are connected to each other.
  • the first output terminal portion T1 is inside the recessed portion of the first terminal box J1 which is recessed in the ⁇ Y direction in the weather-resistant box-shaped main body portion. It is a concave conductive part located in.
  • the second output terminal portion T2 is a convex conductive portion of the second terminal box J2 that protrudes in the ⁇ Y direction from the weather-resistant box-shaped main body portion. Therefore, for example, the first output terminal portion T1 and the second output terminal portion T2 are connected by fitting the convex second output terminal portion T2 to the concave first output terminal portion T1. Further, in the holding step of step Sp2 described above, for example, as shown in FIG. 34 (b), the back surface 2b of each of the first solar cell module 2A and the second solar cell module 2B is along the outer wall surface 11s. Each of the first solar cell module 2A and the second solar cell module 2B is held by the holding unit 3 so as to be positioned thereforably. As a result, the building 100 is produced.
  • This building 100 includes, for example, a plurality of solar cell modules 2 including a first solar cell module 2A and a second solar cell module 2B.
  • the first side surface 2e1 of the first solar cell module 2A is in a state of being close to the second side surface 2e2 of the second solar cell module 2B.
  • the first output terminal portion T1 of the first solar cell module 2A and the second output terminal portion T2 of the second solar cell module 2B are connected to each other.
  • each of the first solar cell module 2A and the second solar cell module 2B is in a state of being held by the holding portion 3 so that the back surface 2b is located along the outer wall surface 11s.
  • the first output terminal portion T1 of another solar cell module 2 having the same configuration as that of the second solar cell module 2B is further subjected to the first solar cell module 2A. It may be in a state of being connected to the second output terminal portion T2. As a result, the three solar cell modules 2 can be directly electrically connected. Further, for example, the first solar cell module 2A and the second solar cell module 2B may be arranged alternately, and four or more solar cell modules 2 may be electrically connected.
  • each solar cell module 2 has a first side surface 2e1 and a second side surface 2e2 located on opposite sides of each other.
  • each of the two solar cell modules 2 including the first solar cell module 2A and the second solar cell module 2B prepared in the preparation step of step Sp1 described above is shown in FIG. 36 (a), for example. As shown, it has a first terminal box J1 and a second terminal box J2 located on the front surface 2f, respectively.
  • the first terminal box J1 is located on the front surface 2f along the first side surface 2e1 and has the first output terminal portion T1 of the first electrode.
  • the second terminal box J2 is located on the front surface 2f along the second side surface 2e2, and the second output terminal portion T2 of the second electrode opposite to the first electrode is provided.
  • the first electrode is a positive electrode
  • the second electrode is a negative electrode
  • the second electrode is a positive electrode.
  • the first side surface 2e1 of the first solar cell module 2A and the second side surface 2e2 of the second solar cell module 2B are brought close to each other.
  • the first output terminal portion T1 of the first solar cell module 2A and the second output terminal portion T2 of the second solar cell module 2B are connected to each other.
  • the first output terminal portion T1 is recessed in the ⁇ Y direction in the weather-resistant box-shaped main body portion of the first terminal box J1. It is a concave conductive part located in a certain recess.
  • the second output terminal portion T2 is a convex conductive portion of the second terminal box J2 that protrudes in the ⁇ Y direction from the weather-resistant box-shaped main body portion. Therefore, for example, the first output terminal portion T1 and the second output terminal portion T2 are connected by fitting the convex second output terminal portion T2 to the concave first output terminal portion T1. Further, in the holding step of step Sp2 described above, for example, as shown in FIG. 34 (b), the back surface 2b of each of the first solar cell module 2A and the second solar cell module 2B is along the outer wall surface 11s. Each of the first solar cell module 2A and the second solar cell module 2B is held by the holding unit 3 so as to be positioned thereforably. As a result, the building 100 is produced.
  • This building 100 includes, for example, a plurality of solar cell modules 2 including a first solar cell module 2A and a second solar cell module 2B.
  • the first side surface 2e1 of the first solar cell module 2A is in a state of being close to the second side surface 2e2 of the second solar cell module 2B.
  • the first output terminal portion T1 of the first solar cell module 2A and the second output terminal portion T2 of the second solar cell module 2B are connected to each other.
  • Each of the first solar cell module 2A and the second solar cell module 2B is in a state of being held by the holding portion 3 so that the back surface 2b is located along the outer wall surface 11s.
  • the first output terminal portion T1 of another solar cell module 2 having the same configuration as that of the second solar cell module 2B is further attached to the first solar cell module 2A. It may be in a state of being connected to the second output terminal portion T2.
  • the three solar cell modules 2 can be directly electrically connected.
  • the first solar cell module 2A and the second solar cell module 2B may be arranged alternately, and four or more solar cell modules 2 may be electrically connected.
  • Second connection mode In the above-mentioned first connection mode, for example, as shown in FIGS. 37 (a) to 38 (c), in the holding step of the above-mentioned step Sp2, the first side surface 2e1 and the first side surface 2e1 of the first solar cell module 2A. 2
  • the first output terminal portion T1 of the first solar cell module 2A and the second output terminal portion T2 of the second solar cell module 2B are connected by a connecting member C2 so that the second side surface 2e2 of the solar cell module 2B is brought close to each other. It may be in a state of being allowed.
  • each of the two solar cell modules 2 is located on the back surface 2b as shown in FIGS. 37 (a) and 38 (a). It has a first terminal box J1 and a second terminal box J2.
  • the first output terminal portion T1 of the first terminal box J1 is located, for example, in a recess in a box-shaped main body portion having weather resistance in the first terminal box J1 that is recessed in the + X direction. It is a concave part having conductivity.
  • the second output terminal portion T2 of the second terminal box J2 is, for example, conductive located in a recess in a box-shaped main body portion having weather resistance in the second terminal box J2, which is recessed in the + X direction.
  • the connecting member C2 has a convex third terminal portion T3 and a convex third terminal portion T3 protruding in the + X direction from the weather-resistant box-shaped main body, respectively. It has a 4-terminal portion T4.
  • the third terminal portion T3 and the fourth terminal portion T4 are, for example, electrically conductive to each other and are electrically connected to each other in a box-shaped main body having weather resistance of the connecting member C2. ..
  • the concave first output terminal portion T1 is fitted with the convex third terminal portion T3, and the concave second output terminal portion T3 is fitted.
  • the convex fourth terminal portion T4 is fitted to the output terminal portion T2
  • the first output terminal portion T1 and the second output terminal portion T2 are electrically connected via the connecting member C2.
  • the building 100 produced here includes, for example, a plurality of solar cell modules 2 including a first solar cell module 2A and a second solar cell module 2B.
  • the first side surface 2e1 of the first solar cell module 2A is in a state of being close to the second side surface 2e2 of the second solar cell module 2B.
  • the first output terminal portion T1 of the first solar cell module 2A and the second output terminal portion T2 of the second solar cell module 2B are electrically connected by the connecting member C2.
  • each of the first solar cell module 2A and the second solar cell module 2B is in a state of being held by the holding portion 3 so that the back surface 2b is located along the outer wall surface 11s.
  • the second output terminal portion T2 may be electrically connected by the connecting member C2.
  • the three solar cell modules 2 can be electrically connected.
  • the first solar cell module 2A and the second solar cell module 2B may be arranged alternately, and four or more solar cell modules 2 may be electrically connected by three or more connecting members C2.
  • each of the two solar cell modules 2 is located on the front surface 2f as shown in FIGS. 39 (a) and 40 (a). It has a first terminal box J1 and a second terminal box J2.
  • the first output terminal portion T1 of the first terminal box J1 is located, for example, in the recessed portion in the -X direction in the weather-resistant box-shaped main body portion of the first terminal box J1. It is a concave portion having conductivity.
  • the second output terminal portion T2 of the second terminal box J2 is, for example, conductive located in a concave portion in a box-shaped main body portion having weather resistance in the second terminal box J2, which is recessed in the ⁇ X direction.
  • the connecting member C2 has a convex third terminal portion T3 and a convex third terminal portion T3 protruding in the ⁇ X direction from the weather-resistant box-shaped main body, respectively. It has a fourth terminal portion T4.
  • the third terminal portion T3 and the fourth terminal portion T4 are, for example, conductive to each other and are electrically connected to each other in the weather-resistant main body of the connecting member C2.
  • the concave first output terminal portion T1 is fitted with the convex third terminal portion T3, and the concave second output terminal portion T3 is fitted.
  • the convex fourth terminal portion T4 By fitting the convex fourth terminal portion T4 to the output terminal portion T2, the first output terminal portion T1 and the second output terminal portion T2 are electrically connected via the connecting member C2.
  • the building 100 produced here also includes, for example, a plurality of solar cell modules 2 including a first solar cell module 2A and a second solar cell module 2B.
  • the first side surface 2e1 of the first solar cell module 2A is in a state of being close to the second side surface 2e2 of the second solar cell module 2B.
  • the first output terminal portion T1 of the first solar cell module 2A and the second output terminal portion T2 of the second solar cell module 2B are electrically connected by the connecting member C2.
  • each of the first solar cell module 2A and the second solar cell module 2B is in a state of being held by the holding portion 3 so that the back surface 2b is located along the outer wall surface 11s.
  • the first output terminal portion T1 of another solar cell module 2 having the same configuration as that of the second solar cell module 2B and the first solar cell module 2A
  • the second output terminal portion T2 may be electrically connected by the connecting member C2.
  • the three solar cell modules 2 can be electrically connected.
  • the first solar cell module 2A and the second solar cell module 2B may be arranged alternately, and four or more solar cell modules 2 may be electrically connected by three or more connecting members C2.
  • each solar cell module 2 has a first side surface 2e1 and a second side surface 2e2 located on opposite sides of each other.
  • each has a terminal portion (first output terminal portion) T1 of the first electrode and a terminal portion (second output terminal portion) T2 of the second electrode opposite to the first electrode.
  • first output terminal portion T1 is located in the first region Ar1 along the first side surface 2e1.
  • second output terminal portion T2 is located in the second region Ar2 along the second side surface 2e2.
  • the first electrode is a positive electrode
  • the second electrode is a negative electrode
  • the first electrode is a negative electrode
  • the second electrode is a positive electrode.
  • the first output terminal portion T1 is exposed in the + X direction on the front surface 2f
  • the second output terminal portion T2 is exposed.
  • the back surface 2b is exposed in the ⁇ X direction.
  • the first region Ar1 of the first solar cell module 2A and the second solar cell module 2B are laminated so that the first output terminal portion T1 of the first solar cell module 2A and the second output terminal portion T2 of the second solar cell module 2B are connected to each other.
  • the first output terminal portion T1 and the second output terminal portion T2 are connected at a position where the first solar cell module 2A and the second solar cell module 2B are laminated.
  • the convex portion and the concave portion are formed.
  • the first output terminal portion T1 and the second output terminal portion T2 can be connected by the fitting button type connection.
  • the connection between the first output terminal portion T1 and the second output terminal portion T2 may be realized by other methods such as a connector type, a pin terminal type, or a slide insertion type. Further, in the holding step of step Sp2 described above, for example, as shown in FIG.
  • the back surface 2b of each of the first solar cell module 2A and the second solar cell module 2B is along the outer wall surface 11s.
  • Each of the first solar cell module 2A and the second solar cell module 2B is held by the holding unit 3 so as to be located. As a result, the building 100 is produced.
  • This building 100 includes, for example, two solar cell modules 2 including a first solar cell module 2A and a second solar cell module 2B.
  • the first solar cell module 2A and the second solar cell module 2B each have a first output terminal portion T1 located in the first region Ar1 and a second output terminal portion T1 located in the second region Ar2, respectively. It has an output terminal portion T2, and is in a state of being held by the holding portion 3 so that the back surface 2b is located along the outer wall surface 11s.
  • the first region Ar1 of the first solar cell module 2A is located in a state of being stacked on the second region Ar2 of the second solar cell module 2B, and the first output terminal portion T1 is a second output terminal. It is in a state of being connected to the unit T2.
  • Ar2 may be laminated so that the second output terminal portion T2 of the first solar cell module 2A and the first output terminal portion T1 of another solar cell module 2 are connected to each other.
  • the three solar cell modules 2 can be directly electrically connected.
  • the first solar cell module 2A and the second solar cell module 2B may be arranged alternately, and four or more solar cell modules 2 may be electrically connected.
  • bypass diodes Do1, Do2, and Do3 may be appropriately arranged in the first region Ar1 and the second region Ar2.
  • the bypass diodes Do1, Do2, and Do3 may be appropriately arranged in the first region Ar1 and the second region Ar2.
  • the amount of power generation per unit area on the outer wall surface 11s can be improved.
  • U-shaped needle has, for example, two shaft portions 3a and a portion (also referred to as a connecting portion) connecting the two shaft portions 3a.
  • the connecting portion has the role of the pressing portion 3h.
  • the back surface 2b of the back surface protective layer 22 is adhered to the outer wall portion 11 via the adhesive material 3B.
  • the outer wall portion 11 is a member (also referred to as a support member) in a state of supporting the solar cell module 2. It is conceivable that the outer wall portion 11 is in a harder state than the front protective layer 21, for example. In other words, it is conceivable that the front protective layer 21 is in a softer state than the outer wall portion 11.
  • the state in which the front protective layer 21 is softer than the outer wall portion 11 includes, for example, a state in which the front protective layer 21 has a lower rigidity than the outer wall portion 11.
  • the outer wall portion 11 can support the solar cell module 2 so as to maintain the shape of the solar cell module 2.
  • a Vickers hardness tester for each of the front protective layer 21 and the outer wall portion 11 was used. It can be calculated and evaluated from the measurement result of Vickers hardness.
  • the solar cell module 2 is removed from the building 100, the solar cell module 2 is disassembled, the front protective layer 21 and the outer wall portion 11 are taken out, and each of the front protective layer 21 and the outer wall portion 11 is mechanically tested.
  • the relative softness and hardness relationship between the front protective layer 21 and the outer wall 11 may be calculated and evaluated using methods, resonance methods and ultrasonic pulse methods.
  • the outer wall portion 11 may be, for example, an outer wall material.
  • Mechanical test methods include, for example, tensile tests, torsional tests and compression tests using test pieces. Young's modulus is easily calculated from the slope of the stress-strain diagram obtained by the mechanical test method.
  • forced vibration can be mechanically or electrically applied to the test piece, the resonance frequency (natural frequency) of the test piece can be measured, and the Young's ratio can be calculated from this resonance frequency.
  • forced vibration includes longitudinal vibration, lateral vibration, and torsional vibration.
  • the Young's modulus of the test piece can be obtained from the resonance frequencies of longitudinal vibration and transverse vibration, and the rigidity of the test piece (transverse elastic coefficient) can be obtained from the resonance frequency of torsional vibration. ) Is obtained.
  • an ultrasonic pulse of about 1 megahertz (MHz) to 20 MHz is propagated to a test piece using a longitudinal wave oscillator and a transverse wave oscillator, and propagation of longitudinal waves and transverse waves propagating in the test piece. Young ratio and rigidity ratio can be calculated from the speed.
  • the solar cell has a Young's modulus larger than that of the first filler layer 241, the solar cell The rigidity of at least one layer between the element 231 and the outer wall portion 11 is increased.
  • the material of the front protective layer 21 is a resin softer than glass, even if a flying object or the like due to a strong wind collides with the first surface 21f of the front protective layer 21, the solar cell element 231 and the outer wall The portion located between the portion 11 and the portion 11 is unlikely to cause local deformation.
  • the solar cell element 231 is less likely to be locally deformed, and the solar cell element 231 is less likely to be cracked. Therefore, for example, the impact resistance of the solar cell module 2 having the soft front protective layer 21 made of resin or the like can be enhanced. Therefore, for example, even if the front protective layer 21 is made of a resin in order to reduce the weight of the solar cell module 2, one or more layers of the second filler layer 242, the back surface protective layer 22, and the adhesive 3B are used.
  • the Young's modulus of the first filler layer 241 larger than the Young's modulus of the first filler layer 241 the impact resistance of the solar cell module 2 can be improved. Therefore, for example, the weight of the solar cell module 2 can be reduced and the impact resistance can be improved.
  • the Young's modulus of the second filler layer 242 is made larger than the Young's modulus of the first filler layer 241.
  • EVA the material of the first filler layer 241
  • ionomer the material of the second filler layer 242
  • the Young's modulus of the second filler layer 242 is set higher than the Young's modulus of the first filler layer 241.
  • the ionomer for example, Hymilan (registered trademark) manufactured by Mitsui Dow Polychemical Co., Ltd. can be adopted.
  • an ionomer of an ethylene / unsaturated carboxylic acid copolymer may be applied to this ionomer.
  • the ionomer of this ethylene / unsaturated carboxylic acid copolymer can be obtained, for example, by reacting the ethylene / unsaturated carboxylic acid copolymer with a metal compound.
  • the rigidity of the second filler layer 242 in contact with the solar cell element 231 on the outer wall portion 11 side of the solar cell element 231 can be increased.
  • the second filler layer 242 is less likely to be locally deformed.
  • the solar cell element 231 is less likely to be locally deformed, and the solar cell element 231 is less likely to be cracked. Therefore, for example, the impact resistance of the solar cell module 2 can be improved.
  • the Young's modulus of the adhesive 3B is made larger than the Young's modulus of the first filler layer 241.
  • EVA the material of the first filler layer 241
  • the material of the adhesive 3B as a type (also referred to as a two-component mixed type) adhesive in which two liquids are mixed and used
  • the Young's modulus of the adhesive 3B can be made larger than the Young's modulus of the layer 241. In this way, for example, the rigidity of the adhesive 3B located between the solar cell element 231 and the outer wall portion 11 can be increased.
  • the adhesive 3B is less likely to be locally deformed.
  • the solar cell element 231 is less likely to be locally deformed, and the solar cell element 231 is less likely to be cracked. Therefore, for example, the impact resistance of the solar cell module 2 can be improved.
  • resin is used as the material of the front protective layer 21 instead of glass.
  • a glass substrate also referred to as a glass substrate
  • the roughness of the surface of the glass substrate can be increased due to the influence of the unevenness on the outer peripheral surface of the roll used when manufacturing the glass substrate.
  • the arithmetic mean roughness (Ra) of the surface of this glass substrate is, for example, about several ⁇ m to several hundred ⁇ m.
  • the surface of the semiconductor substrate 2310 on the first element surface 231f side has a fine uneven structure (texture), so that the roughness of the first element surface 231f can be increased to some extent.
  • the arithmetic mean roughness (Ra) of the first element surface 231f is, for example, about 100 nm to several hundred nm.
  • the material of the front protective layer 21 is resin
  • the surface roughness of the front protective layer 21 can be smaller than the surface roughness of the glass substrate.
  • the arithmetic mean roughness (Ra) of the surface of the front protective layer 21 made of resin is, for example, about several nm to several tens of nm. Therefore, for example, if the material of the front protective layer 21 is changed from glass to resin, the contact area between the front protective layer 21 and the first filler layer 241 becomes small.
  • peeling is likely to occur between the front surface protective layer 21 and the first filler layer 241.
  • peeling occurs between the front protective layer 21 and the first filler layer 241 and between the front protective layer 21 and the first filler layer 241. Therefore, slippage is likely to occur, and the rigidity of the entire solar cell module 2 may decrease.
  • the solar cell element 231 is likely to be locally deformed, the solar cell element 231 is likely to be cracked, and the solar cell module. It may cause a decrease in impact resistance in 2.
  • the roughness (also referred to as the first roughness) at the interface (also referred to as the first interface) between the front surface protective layer 21 and the first filler layer 241 is the roughness of the first filler layer 241 and the solar cell element 231. It is conceivable that the roughness is smaller than the roughness (also referred to as the second roughness) at the interface with (also referred to as the second interface).
  • the arithmetic mean roughness (Ra) of the first interface and the second interface is obtained for each of the solar cell modules 2 before and after being placed in a high temperature and high humidity environment, the arithmetic mean roughness of the first interface is obtained.
  • Ra was about 5 nm to 15 nm
  • the arithmetic mean roughness (Ra) of the second interface was about 150 nm to 250 nm.
  • an image is acquired by photographing the cut surface obtained by cutting each solar cell module 2 along the XZ plane by using an electron microscope (SEM) or an optical microscope, and this image is used as the target.
  • the arithmetic average roughness (Ra) was calculated after detecting the cross-sectional shapes of the first interface and the second interface by image processing such as digitization.
  • the first roughness at the first interface between the front surface protective layer 21 and the first filler layer 241 is larger than the second roughness at the second interface between the first filler layer 241 and the solar cell element 231.
  • the contact area between the front surface protective layer 21 and the first filler layer 241 becomes smaller. Therefore, for example, when resin is used as the material of the front protective layer 21, peeling is performed between the front protective layer 21 and the first filler layer 241 as compared with the case where glass is used as the material of the front protective layer 21. It becomes easy to occur, and the solar cell element 231 becomes easy to break. Even in such a case, for example, by increasing the rigidity of at least one layer between the solar cell element 231 and the outer wall surface 11s, flying objects or the like can be generated with respect to the first surface 21f of the front protective layer 21.
  • the solar cell element 231 is less likely to be locally deformed, and the solar cell element 231 is less likely to be cracked.
  • the impact resistance of the solar cell module 2 having the front protective layer 21 made of resin can be improved. Therefore, for example, the weight of the solar cell module 2 can be reduced and the impact resistance can be improved.
  • At least one layer of the second filler layer 242 and the adhesive 3B may be a layer in which a large number of granules harder than this resin are dispersed in the resin.
  • the Young's modulus of at least one of the second filler layer 242 and the adhesive 3B may be larger than the Young's modulus of the first filler layer 241.
  • an insulating inorganic oxide or an organic filler is applied to a large number of granules.
  • the diameter of a large number of granules is, for example, about several nm to several ⁇ m.
  • the second sheet 242s which is the base of the second filler layer 242
  • a large number of particles are added to the resin constituting the second filler layer 242.
  • Granules can be dispersed. If such a configuration is adopted, for example, the rigidity of the second filler layer 242 located immediately on the outer wall portion 11 side of the solar cell element 231 can be easily increased. Thereby, for example, the impact resistance of the solar cell module 2 having the front protective layer 21 made of resin can be easily improved.
  • the adhesive 3B is a resin layer
  • a large number of granules are added to the resin constituting the adhesive 3B. Can be dispersed.
  • the first filler is used.
  • the Young's modulus of the second filler layer 242 may be larger than the Young's modulus of the layer 241.
  • the second filler layer is more than the cross-linking rate of the resin constituting the first filler layer 241.
  • the cross-linking rate of the resins constituting 242 can be increased.
  • the cross-linking rate of the resin constituting the adhesive 3B is higher than the cross-linking rate of the resin constituting the first filler layer 241.
  • the Young rate of the adhesive 3B may be larger than the Young rate of the first filler layer 241.
  • the cross-linking rate of the resin constituting at least one of the second filler layer 242 and the adhesive 3B is higher than the cross-linking rate of the resin constituting the first filler layer 241. May also be large.
  • the thickness of the second filler layer 242 may be smaller than the thickness of the first filler layer 241.
  • the amount of dent in the second filler layer 242 located immediately behind the solar cell element 231 becomes small. obtain.
  • the solar cell element 231 is less likely to be locally deformed, and the solar cell element 231 is less likely to be cracked.
  • the impact resistance of the solar cell module 2 can be improved.
  • the third embodiment and the fourth embodiment for example, it is assumed that there is no adhesive between the outer wall portion 11 and the solar cell module 2.
  • the solar cell element 231 The rigidity of at least one layer between the surface and the outer wall portion 11 is increased. Thereby, for example, the impact resistance of the solar cell module 2 can be improved.
  • two or more holders 3C each having one or more rod-shaped portions may be adopted as the holder 3.
  • the structure 1 is prepared so that the first power receiving terminal 111p of the outer wall portion 11 includes the first convex portion D1, and the first output terminal 211p
  • the solar cell module 2 may be prepared so as to include the first recess R1.
  • the first convex portion D1 has a shape protruding in the + X direction on the outer wall surface 11s
  • the first concave portion R1 has a shape recessed in the + X direction on the back surface 2b of the solar cell module 2.
  • the first hook portion F1 has a first convex portion D1 protruding in the + Z direction, and the third hook portion F3 is recessed in the + Z direction. It is also conceivable to consider that the first concave portion R1 is provided. In this case, for example, in the holding step of step Sp2 described above, the first concave portion R1 of the first output terminal 211p and the first convex portion D1 of the first power receiving terminal 111p are fitted to each other. The power receiving terminal 111p and the first output terminal 211p may be electrically connected.
  • the building 100 produced thereby includes, for example, an outer wall portion 11 having a first power receiving terminal 111p including a first convex portion D1, a solar cell module 2 having a first output terminal 211p including a first concave portion R1. It has. Then, in this building 100, for example, the first output terminal 211p is in a state of being connected to the first power receiving terminal 111p by fitting the first concave portion R1 and the first convex portion D1. Further, for example, the building 1 is prepared so that the second power receiving terminal 111n of the outer wall portion 11 includes the second convex portion D2, and the solar cell module 2 is provided so that the second output terminal 211n includes the second concave portion R2. You may prepare.
  • the second convex portion D2 has a shape protruding in the + X direction on the outer wall surface 11s
  • the second concave portion R2 has a shape recessed in the + X direction on the back surface 2b of the solar cell module 2.
  • the second hook portion F2 has a second convex portion D2 protruding in the + Z direction
  • the fourth hook portion F4 is recessed in the + Z direction. It is also conceivable to consider that the second recess R2 is provided.
  • the second concave portion R2 of the second output terminal 211n and the second convex portion D2 of the second power receiving terminal 111n are fitted to each other to form a second.
  • the power receiving terminal 111n and the second output terminal 211n may be electrically connected.
  • the building 100 produced by this means for example, an outer wall portion 11 having a second power receiving terminal 111n including a second convex portion D2, a solar cell module 2 having a second output terminal 211n including a second concave portion R2, and the like. It has. Then, in this building 100, for example, the second output terminal 211n is in a state of being connected to the second power receiving terminal 111n by fitting the second concave portion R2 and the second convex portion D2.
  • glass may be applied to the material of the front protective layer 21.
  • the front protective layer 21 may be, for example, a translucent layer made of glass.
  • the weather resistance and the moisture resistance of the front protective layer 21 can be improved.
  • the front protective layer 21 it is conceivable to use chemically strengthened glass as the material of the front protective layer 21 and reduce the thickness of the front protective layer 21 to about 0.7 mm while maintaining the strength of the front protective layer 21 to some extent.
  • a mode in which the solar cell module 2 is penetrated by the connecting member B2 can be considered.
  • the material of the outer wall material constituting the outer wall portion 11 is a metal-based siding material such as a galvanium steel plate, and the outer wall material constituting the outer wall portion 11 is uneven like a corrugated iron plate or the like. It is assumed that the surface has a surface of. In this case, for example, in the state of the building 100, the portion of the back surface 2b of the solar cell module 2 located in the ⁇ X direction of the solar cell element 231 abuts or approaches the convex portion of the outer wall surface 11s. It may be located so that it does.
  • the convex portion of the outer wall surface 11s and the solar cell element 231 may be positioned so as to overlap each other. If such a configuration is adopted, for example, the solar cell element 231 is easily cooled by heat transfer from the solar cell element 231 to the metal-based siding material and heat conduction in the metal-based siding material. As a result, for example, the photoelectric conversion efficiency of the solar cell element 231 can be increased, so that the photoelectric conversion efficiency of the solar cell module 2 can be increased.
  • the outer wall material constituting the outer wall portion 11 has an uneven surface such as a corrugated iron plate.
  • the portion of the back surface 2b of the solar cell module 2 located in the ⁇ X direction of the gap portion of the adjacent solar cell elements 231 is the convex portion of the outer wall surface 11s. It may be located in contact with or in close proximity to.
  • the gap portion between the adjacent solar cell elements 231 and the convex portion of the outer wall surface 11s may be positioned so as to overlap each other.
  • the stress due to the convex portion of the outer wall surface 11s on the solar cell element 231 is unlikely to increase.
  • the solar cell element 231 is hard to break.
  • the solar cell element 231 is easily cooled by the ventilation between the recess of the outer wall surface 11s and the back surface 2b of the solar cell module 2. Therefore, for example, it is possible to increase the photoelectric conversion efficiency of the solar cell module 2 while increasing the durability such as the strength of the solar cell module 2.
  • the outer wall material constituting the outer wall portion 11 has an uneven surface such as a corrugated iron plate.
  • the direction in which the convex portion of the outer wall surface 11s extends also referred to as the longitudinal direction of the convex portion
  • the longitudinal direction also referred to as the longitudinal direction of the finger electrode
  • the outer wall surface 11s of the outer wall material is formed in the step of manufacturing the outer wall material.
  • the solar cell module 2 may be held by the holding portion 3 along the surface.
  • the holding portion 3 is the adhesive material 3B
  • the solar cell module 2 is placed on the heater so that the front surface 2f of the solar cell module 2 faces the direction of gravity, and further, on the back surface 2b of the solar cell module 2.
  • the outer wall material integrally configured with the solar cell module 2 can be manufactured.
  • the outer wall surface 11s of the building 1 is not limited to the one facing the horizontal direction, for example, and may face the direction inclined with respect to the horizontal plane.
  • the building 1 may include, for example, artificially constructed structures such as piers, bridges, retaining walls, noise barriers, breakwaters, stone walls, dams, and ships.
  • SDGs Sudden Development Goals

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Finishing Walls (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
PCT/JP2020/047391 2020-02-12 2020-12-18 太陽電池モジュールの設置方法および建造物 WO2021161657A1 (ja)

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EP4475428A1 (en) * 2023-06-09 2024-12-11 Siguesol System for supporting solar panels and clamp for connecting solar panel to supporting wire

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