WO2016031231A1 - 太陽電池モジュール - Google Patents
太陽電池モジュール Download PDFInfo
- Publication number
- WO2016031231A1 WO2016031231A1 PCT/JP2015/004263 JP2015004263W WO2016031231A1 WO 2016031231 A1 WO2016031231 A1 WO 2016031231A1 JP 2015004263 W JP2015004263 W JP 2015004263W WO 2016031231 A1 WO2016031231 A1 WO 2016031231A1
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- WIPO (PCT)
- Prior art keywords
- solar cell
- string group
- cell module
- strings
- solar battery
- Prior art date
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- 239000000463 material Substances 0.000 claims abstract description 18
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- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 5
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- 239000012463 white pigment Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- GPXJNWSHGFTCBW-UHFFFAOYSA-N Indium phosphide Chemical compound [In]#P GPXJNWSHGFTCBW-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
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- 229910052787 antimony Inorganic materials 0.000 description 1
- CJDPJFRMHVXWPT-UHFFFAOYSA-N barium sulfide Chemical compound [S-2].[Ba+2] CJDPJFRMHVXWPT-UHFFFAOYSA-N 0.000 description 1
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- 229910003437 indium oxide Inorganic materials 0.000 description 1
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- 229910052751 metal Inorganic materials 0.000 description 1
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- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 description 1
- CSHWQDPOILHKBI-UHFFFAOYSA-N peryrene Natural products C1=CC(C2=CC=CC=3C2=C2C=CC=3)=C3C2=CC=CC3=C1 CSHWQDPOILHKBI-UHFFFAOYSA-N 0.000 description 1
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- 229910052984 zinc sulfide Inorganic materials 0.000 description 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/054—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means
- H01L31/056—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means the light-reflecting means being of the back surface reflector [BSR] type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0232—Optical elements or arrangements associated with the device
- H01L31/02327—Optical elements or arrangements associated with the device the optical elements being integrated or being directly associated to the device, e.g. back reflectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
- H01L31/049—Protective back sheets
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
- H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/054—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means
- H01L31/0547—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means comprising light concentrating means of the reflecting type, e.g. parabolic mirrors, concentrators using total internal reflection
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/02002—Arrangements for conducting electric current to or from the device in operations
- H01L31/02005—Arrangements for conducting electric current to or from the device in operations for device characterised by at least one potential jump barrier or surface barrier
- H01L31/02008—Arrangements for conducting electric current to or from the device in operations for device characterised by at least one potential jump barrier or surface barrier for solar cells or solar cell modules
- H01L31/02013—Arrangements for conducting electric current to or from the device in operations for device characterised by at least one potential jump barrier or surface barrier for solar cells or solar cell modules comprising output lead wires elements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
- H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
- H01L31/0508—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module the interconnection means having a particular shape
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- 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
- Y02E10/52—PV systems with concentrators
Definitions
- This disclosure relates to a solar cell module.
- a solar cell module in which a reflector that reflects at least part of incident light is disposed on the back side of a solar cell (see, for example, Patent Document 1).
- the incident light that passes through the back side from the portion where the solar cells are not arranged can be reflected to the cell side, and the utilization efficiency of the incident light is improved.
- a string group is formed by arranging a plurality of strings of solar cells arranged at regular intervals.
- the interval between the end of the module and the solar cell located at the end of the string group is usually wider than the interval between adjacent strings.
- the exposed area of the reflector around the solar cell located at the center of the module (the exposed area when viewed from the light receiving surface side) is small and located near the end of the module.
- the exposed area of the reflector around the solar battery cell is increased.
- the solar cell located in the center of the module has a smaller amount of incident light than a solar cell located near the end of the module, for example, the short circuit current (Isc) is reduced, and the probability of occurrence of a hot spot. May increase.
- a solar cell module that is one embodiment of the present disclosure is arranged on the back surface side of a plurality of solar cells, a wiring material that connects adjacent solar cells in the vertical direction to form a string, A reflector that reflects at least a part of incident light to the solar cell side, and a plurality of strings are arranged in the horizontal direction to form a string group, and the interval between adjacent strings is the both ends of the string group in the vertical direction. It is formed wider in the central portion in the vertical direction than the portion.
- the difference in the amount of incident light with respect to each solar cell can be reduced, and for example, Isc can be made uniform.
- vertical direction and “horizontal direction” are used as terms indicating directions.
- the vertical direction is a direction in which solar cells constituting the string are arranged.
- the horizontal direction is a direction orthogonal to the vertical direction, and is a direction in which the strings constituting the string group are arranged.
- the description “providing the second member on the first member” does not intend only when the first and second members are provided in direct contact unless specifically limited. That is, this description includes a case where another member exists between the first and second members.
- a surface on which sunlight mainly enters is referred to as a “light receiving surface”, and a surface opposite to the light receiving surface is referred to as a “back surface”.
- the terms light receiving surface and back surface are also used for components such as solar cells.
- the solar cell module 10 includes a plurality of solar cells 11, a first protection member 12 provided on the light receiving surface side of the solar cells 11, and the back surface side of the solar cells 11. And a second protective member 13 provided on the head.
- the plurality of solar cells 11 are sandwiched between the first protective member 12 and the second protective member 13 and sealed with a filler 14 (see FIG. 2) filled between the protective members.
- the solar cell module 10 is provided on the back surface side of the solar battery cell 11 and includes a reflector 15 that reflects at least part of incident light to the solar battery cell 11 side.
- the solar cell module 10 includes a wiring member 21 that connects adjacent solar cells 11 in the vertical direction to form a string 20.
- the string 20 includes a plurality of solar cells 11 arranged in a line, and a plurality of strings 20 are arranged in the horizontal direction.
- the wiring member 21 is bent in the thickness direction of the module between, for example, adjacent solar cells 11, and adhesive is applied to the electrode on the light receiving surface side of one solar cell 11 and the electrode on the back surface side of the other solar cell 11. Etc. (see FIG. 2).
- the solar cell module 10 includes a string group 30 in which a plurality of strings 20 are arranged in the horizontal direction.
- a string group 30 is composed of six strings 20 arranged in the horizontal direction.
- the string group 30 preferably includes a crossover wiring member 31 that connects adjacent strings 20 in the horizontal direction. At least a part of the transition wiring member 31 is drawn into a terminal box 16 provided on the back side of the second protective member 13, for example.
- the terminal box 16 preferably contains a bypass diode for stabilizing the output.
- the solar battery cell 11 includes a photoelectric conversion unit that generates carriers by receiving sunlight.
- the photoelectric conversion unit includes, for example, a light receiving surface electrode formed on the light receiving surface of the photoelectric conversion unit and a back electrode formed on the back surface (both not shown) as electrodes for collecting the generated carriers.
- a wiring material 21 is connected to each electrode.
- the structure of the photovoltaic cell 11 is not limited to this, For example, the structure in which the electrode was formed only on the back surface of a photoelectric conversion part may be sufficient.
- the back electrode is preferably formed in a larger area than the light receiving surface electrode, and the surface with the larger electrode area (or the surface on which the electrode is formed) can be said to be the back surface of the solar battery cell 11.
- the photoelectric conversion unit includes, for example, a semiconductor substrate such as crystalline silicon (c-Si), gallium arsenide (GaAs), and indium phosphide (InP), an amorphous semiconductor layer formed on the semiconductor substrate, and an amorphous semiconductor A transparent conductive layer formed on the layer.
- a semiconductor substrate such as crystalline silicon (c-Si), gallium arsenide (GaAs), and indium phosphide (InP)
- an amorphous semiconductor layer formed on the semiconductor substrate and an amorphous semiconductor A transparent conductive layer formed on the layer.
- an i-type amorphous silicon layer, a p-type amorphous silicon layer, and a transparent conductive layer are sequentially formed on one surface of an n-type single crystal silicon substrate, and an i-type non-crystalline layer is formed on the other surface.
- Examples include a structure in which a crystalline silicon layer, an n-type amorphous silicon layer, and a transparent conductive
- first protection member 12 and the second protection member 13 for example, a glass substrate, a resin substrate, a resin film, or the like can be used.
- a member having translucency is applied to the first protective member 12, and it is preferable to use a glass substrate from the viewpoint of fire resistance, durability, and the like.
- the thickness of the glass substrate is, for example, about 2 to 6 mm.
- the second protective member 13 may be a transparent member or an opaque member.
- a resin film is used for the second protection member 13.
- the thickness of the resin film is, for example, about 50 to 300 ⁇ m.
- the filler 14 fills the gap between the solar battery cell 11 and each protection member and serves to seal the solar battery cell 11. It is preferable that the filler 14 is mainly composed of a resin that can be applied to a laminating process described later. Examples of the resin include ethylene vinyl acetate copolymer (EVA) and polyvinyl butyral (PVB).
- the filler 14 includes a filler 14 a disposed between the solar battery cell 11 and the first protective member 12, and a filler 14 b disposed between the solar battery 11 and the second protective member 13. Is preferred.
- the reflector 15 reflects at least a part of the light incident from the light receiving surface side of the solar cell module 10 to the back surface side from the portion where the solar cells 11 are not arranged, and reflects the incident light. It plays a role of improving the utilization efficiency (see light ⁇ in FIG. 3). A part of the light reflected by the reflector 15 is reflected again, for example, at the interface of the first protective member 12 and enters the solar battery cell 11 or directly enters the solar battery cell 11. In this embodiment, when the solar cell module 10 is viewed from the light receiving surface side, the reflector 15 or the crossover wiring material 31 exists in a portion where the solar cells 11 are not arranged. The crossover wiring member 31 usually reflects at least a part of the incident light, and a part of the reflected light enters the solar battery cell 11.
- the reflector 15 preferably has a reflectance of 10% or more with respect to at least a part of light having a wavelength of 380 to 2000 nm, and particularly has a high reflectance for visible light (wavelength 380 to 780 nm), particularly light having a wavelength of 500 to 600 nm. It is preferable.
- the visible light reflectance of the reflector 15 is preferably 50% or more, more preferably 60% or more, and particularly preferably 70% or more.
- the reflection of visible light by the reflector 15 may be either diffuse reflection or regular reflection, and the reflectance means the total reflectance.
- the reflector 15 has at least a portion corresponding to the space between the plurality of adjacent solar cells 11 (gap S 20 ), the end portion 10 e of the solar cell module 10, and the end of the string group 30 on the back surface side of the solar cell 11. It is provided in the part corresponding to the space (gap S 10 ) between the solar battery cells 11 located in the part. Thereby, when the solar cell module 10 is viewed from the light receiving surface side, the reflector 15 is exposed around the solar cell 11.
- the reflector 15 is provided between the filler 14 b and the second protective member 13.
- it is good also as the reflector 15 by making the below-mentioned light reflection material contain in the resin which comprises at least one of the 2nd protection member 13 or the filler 14b.
- the reflector 15 is preferably provided over substantially the entire area of the second protective member 13 including the portion covered with the solar battery cell 11.
- the reflector 15 has, for example, a layer structure in which a material that reflects at least a part of incident light (hereinafter referred to as “light reflecting material”) is dispersed in a resin film.
- the reflector 15 having the layer structure can be provided by applying printing ink containing a light reflecting material on the second protective member 13.
- the reflector 15 may be a metal layer such as silver, copper, nickel, or aluminum. Of these, aluminum is particularly preferred.
- the light reflecting material it is preferable to use a white pigment such as antimony trioxide, zirconium oxide, zinc sulfide, zinc oxide, titanium oxide, barium sulfide, or aluminum oxide. Of these, zinc oxide and titanium oxide are particularly preferable.
- a colored pigment other than a white pigment for example, a black pigment
- the reflector 15 includes, in order from the light receiving surface side, a layer containing a colored pigment having a high infrared light transmittance (for example, a black pigment such as perylene black) and a layer containing the white pigment.
- a laminated structure may be used.
- the solar cell module 10 may have an octagonal shape in plan view.
- the shape of the solar cell module 10 is not particularly limited, and may be a quadrangular shape, a pentagonal shape, a hexagonal shape (see FIG. 4 described later), an elliptical shape, or the like.
- the planar view shape of the solar cell module 10 is determined by, for example, the planar view shape of the first protective member 12 (glass substrate). In any shape, between the solar cell 11 located at the end of the end portion 10e and the string group 30 of the solar cell module 10, from the viewpoint of safety, it is provided with a predetermined gap S 10 Is preferred.
- the string group 30 is formed such that the distance D 20 (gap S 20 ) between adjacent strings 20 is wider in the central portion in the vertical direction than in the vertical ends of the string group 30. That is, the solar cell module 10 when viewed from the light receiving surface side, the area of the reflector 15 exposed from the gap S 20 of each string 20 is wider in the longitudinal central portion than the longitudinal direction end portions of the string group 30 ing.
- the distance D 20 By changing the distance D 20 in this way, the reflector 15 around each of the solar cells 11 located at both longitudinal ends of the string group 30 and the solar cells 11 located at the longitudinal center.
- the difference in the exposed area can be reduced. Thereby, the difference of the incident light quantity with respect to each photovoltaic cell 11 can be made small, for example.
- the part in which the crossover wiring material 31 is provided also has the light reflection function similar to the exposed part of the reflector 15, for example.
- the interval D 20 is preferably formed so as to increase from the both longitudinal end portions of the string group 30 toward the longitudinal central portion. That is, it is preferable that the distance D 20 is gradually increased from the both longitudinal ends of the string group 30 toward the central portion in the vertical direction without suddenly expanding at the central portion in the vertical direction of the string group 30. Thereby, the difference of the incident light quantity with respect to each photovoltaic cell 11 can be made still smaller, for example.
- each string 20 arranged on one side in the horizontal direction of the string group 30 is formed such that the central portion in the longitudinal direction is convex on the one side in the horizontal direction.
- each string 20 disposed on the other side in the horizontal direction of the string group 30 is formed such that the central portion in the longitudinal direction thereof is convex toward the other side in the horizontal direction.
- the string group 30 bulges in the center in the vertical direction on both sides in the horizontal direction.
- the string 20 closer to both ends in the horizontal direction of the string group 30 may be formed with a larger degree of bulge, and the string 20 closer to the central part in the horizontal direction may be formed with a smaller degree of bulge.
- the difference between the distance D 10 between the end 10 e of the solar cell module 10 and the solar cell 11 located at the end of the string group 30 and each distance D 20 is small.
- the wiring members 21 are not arranged straight in the vertical direction but are slightly shifted in the horizontal direction so that the distance D 20 is wider in the central portion in the vertical direction than the both ends in the vertical direction. It is formed by connecting the matching solar battery cells 11 to each other. Further, the spacing D 20 may be changed by bending the wiring member 21 in the lateral direction between the adjacent solar cells 11.
- the solar cell module 10 having the above-described configuration can be manufactured by laminating the string group 30 by using the first protective member 12, the second protective member 13, and the resin sheets constituting the fillers 14a and 14b.
- the string group 30 is formed by connecting a plurality of strings 20 in the horizontal direction using the wiring material 31.
- each string 20 is formed, for example, by connecting the adjacent solar battery cells 11 with a slight shift in the horizontal direction without arranging the wiring material 21 in the vertical direction.
- the first protective member 12, the resin sheet constituting the filler 14a, the string group 30, the resin sheet constituting the filler 14b, and the second protective member 13 are sequentially laminated on the heater.
- This laminated body is heated to a temperature at which the resin sheets constituting the fillers 14a and 14b are softened in a vacuum state, for example. Then, heating is continued while pressing each component member on the heater side under atmospheric pressure, and each member is laminated, and the solar cell module 10 is obtained.
- the exposed area of the reflector 15 around each solar cell 11 constituting the string group 30 (the area of the portion where the solar cell 11 does not exist). Can be reduced. Thereby, the difference of the incident light quantity with respect to each photovoltaic cell 11 can be made small, for example, Isc can be made uniform, and the probability of occurrence of hot spots decreases.
- the solar cell module 50 according to the second embodiment will be described in detail with reference to FIG.
- the same components as those in the above embodiment are denoted by the same reference numerals, and redundant description is omitted.
- the solar cell module 50 is different from the solar cell module 10 in that the string group 52 is divided into a plurality of blocks 53 and 54 arranged in the vertical direction.
- the string group 52 is divided into two at the central portion in the vertical direction, and the number of solar cells 11 constituting each string 51 of the blocks 53 and 54 is the same (for example, four).
- the description of the terminal box is omitted, also in the solar cell module 50, for example, a part of the cross wiring material 31 is drawn into the terminal box.
- the blocks 53 and 54 are electrically connected to each other by, for example, a cable provided on the back side of the second protection member 13.
- the cross wiring members 31 arranged adjacently in the vertical direction between the blocks 53 and 54 are fixed using an adhesive tape 55. Further, the cross wiring members 31 arranged adjacent to each other in the horizontal direction are also fixed by using the adhesive tape 55.
- the strings 51 of each block are connected in the vertical direction so as to form a set of two rows via the cross wiring member 31 and the adhesive tape 55 that are adjacently arranged in the vertical direction between the blocks.
- the gap S 51 (interval D 51 ) between the adjacent strings 51 is formed wider at the center in the vertical direction than at both ends in the vertical direction of the string group 52.
- the string group 52 is divided into blocks 53 and 54 at the central portion in the vertical direction, and the interval D 51 is the boundary position of each block from the vertical ends of the string group 52 (the vertical direction of the string group 52). It becomes wider as it gets closer to the center. More specifically, the gap between each set of the strings 51 connected in the vertical direction via the crossover wiring material 31 and the adhesive tape 55 becomes wider as it approaches the vertical center of the string group 52.
- the difference in the exposed area of the reflector 15 around each solar cell 11 constituting the string group 52 can be reduced.
- the string group 52 is divided into a plurality of blocks 53 and 54, whereby the amount of reflected light increases at the boundary position of each block, and the amount of incident light on the solar cells 11 arranged in the vicinity of the boundary position is reduced. It can be increased further.
- the number and length of the strings 51 may be different from each other. Further, the number of blocks is not limited to two and may be three or more.
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- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
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Abstract
Description
実施形態において参照する図面は、模式的に記載されたものであり、図面に描画された構成要素の寸法比率などは、現物と異なる場合がある。具体的な寸法比率等は、以下の説明を参酌して判断されるべきである。
以下、図1~図3を参照しながら、第1実施形態である太陽電池モジュール10について詳細に説明する。
以下、図4を参照しながら、第2実施形態である太陽電池モジュール50について詳細に説明する。以下では、上記実施形態と同様の構成要素には同じ符号を用いて重複する説明を省略する。
Claims (4)
- 複数の太陽電池セルと、
隣り合う前記太陽電池セル同士を縦方向に接続してストリングを形成する配線材と、
前記太陽電池セルの裏面側に配置され、入射光の少なくとも一部を前記太陽電池セル側に反射する反射体と、
を備え、
前記ストリングが横方向に複数配置されてストリング群が構成され、
隣り合う前記ストリング同士の間隔は、前記ストリング群の縦方向両端部よりも縦方向中央部で広く形成される、太陽電池モジュール。 - 隣り合う前記ストリング同士の間隔は、前記ストリング群の縦方向両端部から縦方向中央部に近づくにつれて広く形成される、請求項1に記載の太陽電池モジュール。
- 前記ストリング群の横方向一方側に配置される前記各ストリングは、その長手方向中央部が当該横方向一方側に凸となるように形成され、
前記ストリング群の横方向他方側に配置される前記各ストリングは、その長手方向中央部が当該横方向他方側に凸となるように形成されている、請求項2に記載の太陽電池モジュール。 - 前記ストリング群は、縦方向に並ぶ複数のブロックに分割されており、
隣り合う前記ストリング同士の間隔は、前記ストリング群の縦方向両端部から前記各ブロックの境界位置に近づくにつれて広く形成される、請求項1~3のいずれか1項に記載の太陽電池モジュール。
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CN201580046603.8A CN106663709B (zh) | 2014-08-28 | 2015-08-25 | 太阳能电池组件 |
EP15836474.5A EP3188253B1 (en) | 2014-08-28 | 2015-08-25 | Solar battery module |
JP2016544959A JP6516228B2 (ja) | 2014-08-28 | 2015-08-25 | 太陽電池モジュール |
US15/438,886 US10032948B2 (en) | 2014-08-28 | 2017-02-22 | Solar battery module |
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Citations (2)
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JP2001148500A (ja) * | 1999-11-22 | 2001-05-29 | Sanyo Electric Co Ltd | 太陽電池モジュール |
JP2014027155A (ja) * | 2012-07-27 | 2014-02-06 | Dainippon Printing Co Ltd | 太陽電池モジュール用裏面保護シート |
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TWI430462B (zh) * | 2008-12-12 | 2014-03-11 | Ind Tech Res Inst | 封裝材料、矽晶太陽光電模組及薄膜太陽光電模組 |
US8120027B2 (en) * | 2009-12-10 | 2012-02-21 | Leonard Forbes | Backside nanoscale texturing to improve IR response of silicon solar cells and photodetectors |
CN202049982U (zh) * | 2011-05-17 | 2011-11-23 | 碧辟普瑞太阳能有限公司 | 一种电池片串并联式的太阳能光伏组件 |
JPWO2014033802A1 (ja) * | 2012-08-27 | 2016-08-08 | パナソニックIpマネジメント株式会社 | 太陽電池モジュール |
JP5671707B2 (ja) * | 2012-11-12 | 2015-02-18 | パナソニックIpマネジメント株式会社 | 太陽電池モジュール |
DE112014000397T5 (de) * | 2013-01-10 | 2015-09-17 | Panasonic Intellectual Property Management Co., Ltd. | Herstellungsverfahren für Solarzellenmodule |
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JP2001148500A (ja) * | 1999-11-22 | 2001-05-29 | Sanyo Electric Co Ltd | 太陽電池モジュール |
JP2014027155A (ja) * | 2012-07-27 | 2014-02-06 | Dainippon Printing Co Ltd | 太陽電池モジュール用裏面保護シート |
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JP6516228B2 (ja) | 2019-05-22 |
US10032948B2 (en) | 2018-07-24 |
JPWO2016031231A1 (ja) | 2017-06-22 |
CN106663709A (zh) | 2017-05-10 |
EP3188253A4 (en) | 2017-08-09 |
CN106663709B (zh) | 2018-01-02 |
US20170179322A1 (en) | 2017-06-22 |
EP3188253A1 (en) | 2017-07-05 |
EP3188253B1 (en) | 2018-08-01 |
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