WO2021162009A1 - Solar cell module - Google Patents

Solar cell module Download PDF

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Publication number
WO2021162009A1
WO2021162009A1 PCT/JP2021/004840 JP2021004840W WO2021162009A1 WO 2021162009 A1 WO2021162009 A1 WO 2021162009A1 JP 2021004840 W JP2021004840 W JP 2021004840W WO 2021162009 A1 WO2021162009 A1 WO 2021162009A1
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WO
WIPO (PCT)
Prior art keywords
solar cell
insulating sheet
protective material
surface protective
back surface
Prior art date
Application number
PCT/JP2021/004840
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French (fr)
Japanese (ja)
Inventor
徹 寺下
紳平 岡本
広平 小島
中村　淳一
Original Assignee
株式会社カネカ
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.)
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Publication date
Application filed by 株式会社カネカ filed Critical 株式会社カネカ
Priority to CN202180013814.7A priority Critical patent/CN115066758A/en
Priority to JP2022500425A priority patent/JPWO2021162009A1/ja
Publication of WO2021162009A1 publication Critical patent/WO2021162009A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

Definitions

  • the present invention relates to a solar cell module.
  • a solar cell module using a plurality of solar cell strings in which a plurality of solar cell cells are connected side by side in a row is known.
  • Such a solar cell module is formed by electrically connecting a plurality of solar cell strings arranged side by side by a wiring member.
  • a plate-shaped protective material is arranged on the front and back sides of a plurality of solar cell strings, and the space around the solar cell string between the protective materials is filled with a sealing material to fill the solar cell string. It is configured so that moisture and the like do not come into contact with the sun (see, for example, Patent Document 1).
  • the front surface protective material, the first encapsulant sheet, the solar cell string, the second encapsulant sheet and the back surface protective material are laminated in this order, and the encapsulant is fluidized by a hot press. Then, the sealing material is filled between the solar cell strings and the like. At this time, the position of the solar cell string may be displaced due to the flow pressure of the sealing material, which may spoil the aesthetic appearance of the solar cell module. Therefore, before the heat pressing, measures such as fixing the adjacent solar cell strings with adhesive tape or the like are taken.
  • the adhesive tape When the solar cell strings are fixed to each other with adhesive tape or the like, the adhesive tape can be visually recognized from the gap between the solar cell strings. It is not easy to prepare an adhesive tape (particularly an adhesive) having a color (refractive index when transparent) that is assimilated with the sealing material or the back surface protective material. In view of such a situation, it is an object of the present invention to provide a solar cell module having an excellent aesthetic appearance.
  • the solar cell module electrically connects between a plurality of solar cell strings each having a plurality of solar cell cells connected side by side in a row and the solar cell string, and the solar cell string.
  • a wiring member extending to the back surface side of the solar cell, an insulating sheet arranged between the solar cell string and the wiring member and fixed to the plurality of solar cell strings, and a surface protective material covering the front surface side of the solar cell string.
  • the solar cell module according to one aspect of the present invention may further include an adhesive tape for fixing the insulating sheet to the solar cell string.
  • the insulating sheet may be fixed to each of the solar cell strings by the two adhesive tapes.
  • the thickness of the adhesive tape may be 50 ⁇ m or more and 100 ⁇ m or less.
  • the insulating sheet may have substantially the same color as the back surface protective material.
  • the insulating sheet may be arranged at both ends of the solar cell string in the arrangement direction of the solar cell.
  • the sealing material may form a continuous layer between the solar cell string and the insulating sheet.
  • the solar cell in the solar cell string, is arranged so as to be overlapped on the back surface side of the other end of the solar cell to which one end is adjacent. You may.
  • FIG. 5 is a cross-sectional view taken along the line AA of the end portion of the solar cell module of FIG.
  • FIG. 1 is a back view showing the arrangement of components in the solar cell module 1 according to the embodiment of the present invention.
  • FIG. 2 is a cross-sectional view of an end portion of the solar cell module 1.
  • the solar cell module 1 has a plurality of solar cell strings 10, a wiring member 20 that electrically connects between the solar cell strings 10 and extends to the back surface side (opposite the light receiving surface) of the solar cell string 10, and a solar cell.
  • An insulating sheet 30 arranged between the string 10 and the wiring member 20 and fixed to the plurality of solar cell strings 10, an adhesive tape 40 for fixing the insulating sheet 30 to the solar cell string 10, and the surface of the solar cell string 10. Sealing that fills the space between the front surface protective material 50 that covers the side, the back surface protective material 60 that covers the back surface side of the solar cell string 10, the wiring member 20, and the insulating sheet 30, and the front surface protective material 50 and the back surface protective material 60.
  • the material 70 and the material 70 are provided.
  • the solar cell string 10 has a plurality of solar cell cells 11 connected in a line in the direction.
  • the solar cell string 10 has a so-called single ring structure. Specifically, in the solar cell string 10, each solar cell 11 is arranged so as to be overlapped with the back surface side of the other end of the adjacent solar cell 11 having one end in the arrangement direction. As a result, there is no gap between the solar cells 11, so that the effective region that contributes to photoelectric conversion can be increased.
  • the solar cell 11 can be, for example, a rectangular solar cell composed of one of divided large-format semiconductor substrates having a predetermined size.
  • the predetermined size is a size determined by the size of the semiconductor wafer (for example, 6 inches).
  • the large-format semiconductor substrate is divided into, for example, two or more and ten or less in a predetermined direction.
  • the solar cell 11 may be a square solar cell composed of a large-format semiconductor substrate itself having a predetermined size.
  • the solar cell 11 has one or a plurality of pairs of electrodes 111 that output electric power.
  • the solar cell 11 may be a double-sided electrode type in which the electrodes 111 are provided on both the front and back surfaces, or may be a back surface electrode type in which the electrodes 111 are provided only on the back surface.
  • a plurality of solar cell cells 11 arranged in a row are electrically connected.
  • the solar cells 11 can be connected to each other by using the interconnector 12 which is a conductive connecting member, and the electrodes 111 of the adjacent solar cells 11 may be directly joined to each other.
  • the wiring members 20 are arranged at both other ends in the longitudinal direction of the solar cell string 10 (arrangement direction of the solar cell 11).
  • the wiring member 20 may have a plurality of electrode wiring portions 21 connected to the electrodes of the solar cell 11, and a crossover wiring portion 22 connecting between the electrode wiring portions 21. Further, at least the wiring member 20 on one side in the longitudinal direction of the solar cell string 10 further has a lead wiring portion 23 extending from the crossover wiring portion 22 to the outside of the back surface protective material 60.
  • the wiring member 20 can be formed of, for example, a metal wire, a metal foil, or the like.
  • One end of the electrode wiring portion 21 is connected to the electrode 111 of the solar cell 11, and the other end is arranged on the back surface side of the insulating sheet 30.
  • the electrode wiring portion 21 can extend linearly.
  • the electrode wiring portion 21 is folded back in a U shape or a hairpin shape so as to extend from the solar cell string 10 side of the insulating sheet 30 to the back surface protective material side. You may.
  • the electrode wiring portion 21 may be integrated with the interconnector 12 that connects the solar cell 11s to each other.
  • the portion of the crossover wiring portion 22 and the drawer wiring portion 23 located at least inside the back surface protective material 60 is arranged on the back surface side of the insulating sheet 30. This prevents the wiring member 20 from coming into contact with the unintended electrode 111 or the like of the solar cell string 10 to cause a short circuit. Further, by arranging the crossover wiring portion 22 on the back surface side of the insulating sheet 30, when the solar cell module 1 is viewed from the front surface side, the crossover wiring portion 22 can be hidden from the gap of the solar cell string 10. ..
  • the insulating sheet 30 is arranged at both ends of the solar cell string 10 in the arrangement direction in the arrangement direction, straddling a plurality of solar cell strings 10, preferably across all the solar cell strings 10, and is arranged across all the solar cell strings 10.
  • the configuration may include a cross section 31 located on the front side and a lead-out wiring insulating portion 32 selectively provided in a portion where the lead-out wiring portion 23 is arranged.
  • the insulating sheet 30 is formed of a sheet-like material having an insulating property.
  • the material of the insulating sheet 30 can be formed from, for example, a resin such as polyethylene terephthalate (PET), an acrylic resin, polyethylene (PE), an olefin resin, a fluorine-containing resin, or a silicone-containing resin.
  • the insulating sheet 30 has substantially the same color as the back surface protective material 60 described later.
  • the insulating sheet 30 can be made of the same material as the back surface protective material 60. Since the insulating sheet 30 has substantially the same color as the back surface protective material 60, the insulating sheet 30 exposed from the gap of the solar cell string 10 is assimilated with the back surface protective material 60 when the solar cell module 1 is viewed from the front surface side. , The insulating sheet 30 does not spoil the aesthetic appearance.
  • substantially the same color means that the difference between hue, saturation and lightness is 10% or less in the HSV color space, and is preferably 5% or less.
  • the adhesive tape 40 is attached so as to straddle the solar cell 11 and the insulating sheet 30, thereby fixing the insulating sheet 30 to the solar cell 11.
  • the insulating sheet 30 is preferably fixed to each solar cell string 10 by two relatively small adhesive tapes 40.
  • the size of the adhesive tape 40 can be, for example, a width of 8 mm or more and 20 mm or less, and a length of 10 mm or more and 30 mm or less.
  • the thickness of the adhesive tape 40 is preferably 50 ⁇ m or more and 100 ⁇ m or less. By using the adhesive tape having such a thickness, the relative position between the solar cell 11 and the insulating sheet 30 can be appropriately determined without unnecessarily increasing the thickness of the solar cell module 1.
  • the surface protective material 50 is a layer that protects the surface side of the solar cell string 10.
  • the surface protective material 50 is formed of a transparent and scratch-resistant material such as glass, polycarbonate, or acrylic resin.
  • the surface protective material 50 preferably has a sufficient thickness to have enough strength to hold the shape of the solar cell module 1.
  • the surface of the surface protective material 50 may be processed into a shape having irregularities, or may be coated with an antireflection coating layer.
  • an antireflection coating layer By using such a surface protective material 50, it is difficult for the surface protective material 50 to reflect the incident light, so that more light can be guided to the solar cell 11 and the photoelectric conversion efficiency of the solar cell module 1 can be improved. Can be done.
  • the back surface protective material 60 is a layer that protects the back surface side of the solar cell string 10.
  • the material of the back surface protective material 60 is not particularly limited, but a material that can reliably prevent the ingress of water or the like (highly water-impervious) is preferable.
  • the back surface protective material 60 can be formed of, for example, a resin such as glass, polyethylene terephthalate (PET), acrylic resin, polyethylene (PE), olefin resin, fluorine-containing resin, silicone-containing resin, or the like.
  • the back surface protective material 60 may be a laminate of these materials and a material having excellent water shielding properties such as a metal foil such as an aluminum foil.
  • the back surface protective material 60 preferably has a color similar to the color when the solar cell 11 is viewed from the front surface side. As a result, when the solar cell module 1 is viewed from the surface side, the gaps between the solar cell strings 10 can be made inconspicuous, so that the influence of the arrangement error of the solar cell strings 10 on the aesthetics can be reduced.
  • the sealing material 70 fills the space around the solar cell string 10, the wiring member 20, the insulating sheet 30, and the adhesive tape 40 between the front surface protective material 50 and the back surface protective material 60.
  • the sealing material 70 suppresses deterioration of the solar cell string 10, particularly the solar cell 11 due to moisture or the like.
  • the sealing material 70 has transparency and has adhesion to the solar cell string 10, the front surface protective material 50 and the back surface protective material 60 (preferably also to the wiring member 20, the insulating sheet 30 and the adhesive tape 40). Formed from material.
  • the encapsulant 70 is preferably formed from a material having thermoplasticity so that the space between these components can be filled by hot pressing.
  • the encapsulant 70 is, for example, ethylene / vinyl acetate copolymer (EVA), ethylene / ⁇ -olefin copolymer, ethylene / vinyl acetate / triallyl isocyanurate (EVAT), polyvinyl butyral (PVB). ), Acrylic resin, urethane resin, silicone resin and the like.
  • the sealing material 70 preferably forms a continuous layer between the solar cell string 10 and the insulating sheet 30. As a result, the solar cell string 10 and the insulating sheet 30 can be joined, so that the effect of sealing the solar cell string 10 can be improved.
  • the solar cell module 1 having the above configuration includes a step of laminating a first encapsulant sheet made of a material for forming a front side portion of the encapsulant 70 on a surface protective material 50 arranged with the surface facing down.
  • the insulating sheet 30 is finely adjusted so that the plurality of solar cell strings 10 are lined up at equal intervals. To fix. At this time, by fixing the insulating sheet 30 to each solar cell string 10 with two adhesive tapes 40, the position and orientation of the solar cell string 10 can be adjusted relatively easily.
  • the insulating sheet 30 holds the solar cell string 10, so that the molten sealing material forming material can be used. It is possible to prevent the solar cell string 10 from being pushed and misaligned.
  • a sheet of the sealing material forming material may be sandwiched between the solar cell string 10 and the insulating sheet 30.
  • a continuous layer of the sealing material forming material can be formed between the solar cell string 10 and the insulating sheet 30, so that the solar cell string 10 can be more reliably sealed.
  • the sheet of the sealing material forming material sandwiched between the solar cell string 10 and the insulating sheet 30 may be smaller than the insulating sheet 30 because it can be fluidized and spread in the process of heat pressing.
  • the step of connecting the plurality of solar cell strings with the wiring member 20 may be performed before the step of arranging the plurality of solar cell strings 10 on the first sealing material sheet. That is, a plurality of solar cell strings 10 connected in advance by wiring members may be laminated on the first sealing material sheet.
  • the insulating sheet may be fixed to the solar cell string by laminating an adhesive on the surface of the insulating sheet facing the solar cell string without using the adhesive tape.
  • the adhesive may be partially laminated so that the adhesive is not visible through the gaps in the solar cell string.

Abstract

The purpose of the present invention is to provide a solar cell module with a superior aesthetic appearance. A solar cell module 1 according to one aspect of the present invention comprises: a plurality of solar cell strings 10 each having a plurality of solar cells 11 arranged side by side in a line and connected; a wiring member 20 which electrically connects the solar cell strings 10 and extends to the rear surface side of the solar cell strings 10; an insulating sheet 30 which is disposed between the solar cell strings 10 and the wiring member 20, and which is fixed to the plurality of solar cell strings 10; a surface protective material 50 which covers the front surface sides of the solar cell strings 10; a rear surface protective material 60 which covers the rear surface sides of the solar cell strings 10, the wiring member 20, and the insulating sheet 30; and a sealing material 70 for filling a space between the front surface protective material 50 and the rear surface protective material 60.

Description

太陽電池モジュールSolar cell module
　本発明は、太陽電池モジュールに関する。 The present invention relates to a solar cell module.
　それぞれ複数の太陽電池セルを一列に並べて接続してなる複数の太陽電池ストリングを用いた太陽電池モジュールが知られている。このような太陽電池モジュールは、並べて配置された複数の太陽電池ストリングを配線部材によって電気的に接続することによって形成される。通常、太陽電池モジュールは、複数の太陽電池ストリングの表裏にそれぞれ板状の保護材を配置し、保護材の間の太陽電池ストリングの周囲の空間に封止材を充填することによって、太陽電池ストリングに水分等が接触しないように構成される（例えば、特許文献１参照）。 A solar cell module using a plurality of solar cell strings in which a plurality of solar cell cells are connected side by side in a row is known. Such a solar cell module is formed by electrically connecting a plurality of solar cell strings arranged side by side by a wiring member. Generally, in a solar cell module, a plate-shaped protective material is arranged on the front and back sides of a plurality of solar cell strings, and the space around the solar cell string between the protective materials is filled with a sealing material to fill the solar cell string. It is configured so that moisture and the like do not come into contact with the sun (see, for example, Patent Document 1).
　太陽電池モジュールにおいて、太陽電池ストリングの間隔が不均一となると、美観が損なわれる。太陽電池モジュールの製造時には、表面保護材、第１の封止材シート、太陽電池ストリング、第２の封止材シートおよび裏面保護材をこの順番に積層し、熱プレスによって封止材を流動化させて太陽電池ストリングの間等に封止材を充填する。このとき、封止材の流動圧力によって太陽電池ストリングの位置がずれて、太陽電池モジュールの美観が損なわれるおそれがある。このため、熱プレスの前に、隣接し合う太陽電池ストリング同士を粘着テープ等で固定するなどの対策がなされる。 In the solar cell module, if the intervals between the solar cell strings are not uniform, the aesthetic appearance will be spoiled. At the time of manufacturing the solar cell module, the front surface protective material, the first encapsulant sheet, the solar cell string, the second encapsulant sheet and the back surface protective material are laminated in this order, and the encapsulant is fluidized by a hot press. Then, the sealing material is filled between the solar cell strings and the like. At this time, the position of the solar cell string may be displaced due to the flow pressure of the sealing material, which may spoil the aesthetic appearance of the solar cell module. Therefore, before the heat pressing, measures such as fixing the adjacent solar cell strings with adhesive tape or the like are taken.
特開２０１０－１２４００７号公報JP-A-2010-124007
　太陽電池ストリング同士を粘着テープ等で固定すると、太陽電池ストリング間の隙間から粘着テープが視認できる状態となる。粘着テープ（特に粘着剤）として、封止材または裏面保護材と同化するような色（透明な場合は屈折率）を有するものを用意することは容易ではない。かかる状況に鑑みて、本発明は、美観に優れる太陽電池モジュールを提供することを課題とする。 When the solar cell strings are fixed to each other with adhesive tape or the like, the adhesive tape can be visually recognized from the gap between the solar cell strings. It is not easy to prepare an adhesive tape (particularly an adhesive) having a color (refractive index when transparent) that is assimilated with the sealing material or the back surface protective material. In view of such a situation, it is an object of the present invention to provide a solar cell module having an excellent aesthetic appearance.
　本発明の一態様に係る太陽電池モジュールは、一列に並べて接続された複数の太陽電池セルをそれぞれ有する複数の太陽電池ストリングと、前記太陽電池ストリングの間を電気的に接続し、前記太陽電池ストリングの裏面側に延びる配線部材と、前記太陽電池ストリングと前記配線部材との間に配置され、複数の前記太陽電池ストリングに固定される絶縁シートと、前記太陽電池ストリングの表面側を覆う表面保護材と、前記太陽電池ストリング、前記配線部材および前記絶縁シートの裏面側を覆う裏面保護材と、前記表面保護材と前記裏面保護材との間の空間を埋める封止材と、を備える。 The solar cell module according to one aspect of the present invention electrically connects between a plurality of solar cell strings each having a plurality of solar cell cells connected side by side in a row and the solar cell string, and the solar cell string. A wiring member extending to the back surface side of the solar cell, an insulating sheet arranged between the solar cell string and the wiring member and fixed to the plurality of solar cell strings, and a surface protective material covering the front surface side of the solar cell string. A solar cell string, a back surface protective material that covers the back surface side of the wiring member and the insulating sheet, and a sealing material that fills the space between the front surface protection material and the back surface protection material.
　本発明の一態様に係る太陽電池モジュールは、前記絶縁シートを前記太陽電池ストリングに固定する粘着テープをさらに備えてもよい。 The solar cell module according to one aspect of the present invention may further include an adhesive tape for fixing the insulating sheet to the solar cell string.
　本発明の一態様に係る太陽電池モジュールにおいて、前記絶縁シートは、それぞれの前記太陽電池ストリングに対して２つの前記粘着テープにより固定されてもよい。 In the solar cell module according to one aspect of the present invention, the insulating sheet may be fixed to each of the solar cell strings by the two adhesive tapes.
　本発明の一態様に係る太陽電池モジュールにおいて、前記粘着テープの厚みが５０μｍ以上１００μｍ以下であってもよい。 In the solar cell module according to one aspect of the present invention, the thickness of the adhesive tape may be 50 μm or more and 100 μm or less.
　本発明の一態様に係る太陽電池モジュールにおいて、前記絶縁シートは、前記裏面保護材と略同色であってもよい。 In the solar cell module according to one aspect of the present invention, the insulating sheet may have substantially the same color as the back surface protective material.
　本発明の一態様に係る太陽電池モジュールにおいて、前記絶縁シートは、前記太陽電池ストリングの前記太陽電池セルの配列方向両端部に配置されていてもよい。 In the solar cell module according to one aspect of the present invention, the insulating sheet may be arranged at both ends of the solar cell string in the arrangement direction of the solar cell.
　本発明の一態様に係る太陽電池モジュールにおいて、前記封止材は、前記太陽電池ストリングと前記絶縁シートとの間に連続する層を形成してもよい。 In the solar cell module according to one aspect of the present invention, the sealing material may form a continuous layer between the solar cell string and the insulating sheet.
　本発明の一態様に係る太陽電池モジュールでは、前記太陽電池ストリングにおいて、前記太陽電池セルは、一方側の端部が隣接する前記太陽電池セルの他方側の端部の裏面側に重ねて配置されてもよい。 In the solar cell module according to one aspect of the present invention, in the solar cell string, the solar cell is arranged so as to be overlapped on the back surface side of the other end of the solar cell to which one end is adjacent. You may.
　本発明によれば、美観に優れる太陽電池モジュールを提供できる。 According to the present invention, it is possible to provide a solar cell module having an excellent aesthetic appearance.
本発明の一実施形態に係る太陽電池モジュールにおける構成要素の配置を示す裏面図である。It is a back view which shows the arrangement of the component | component in the solar cell module which concerns on one Embodiment of this invention. 図１の太陽電池モジュールの端部のＡ－Ａ線断面図である。FIG. 5 is a cross-sectional view taken along the line AA of the end portion of the solar cell module of FIG.
　以下、本発明の実施形態について、図面を参照しながら説明する。なお、便宜上、ハッチングや部材符号等を省略する場合もあるが、かかる場合、他の図面を参照するものとする。また、図面における種々部材の寸法は、便宜上、見やすいように調整されている。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. For convenience, hatching, member codes, etc. may be omitted, but in such cases, other drawings shall be referred to. Further, the dimensions of the various members in the drawings are adjusted for convenience so that they can be easily seen.
　図１は、本発明の一実施形態に係る太陽電池モジュール１における構成要素の配置を示す裏面図である。図２は、太陽電池モジュール１の端部の断面図である。 FIG. 1 is a back view showing the arrangement of components in the solar cell module 1 according to the embodiment of the present invention. FIG. 2 is a cross-sectional view of an end portion of the solar cell module 1.
　太陽電池モジュール１は、複数の太陽電池ストリング１０と、太陽電池ストリング１０の間を電気的に接続し、太陽電池ストリング１０の裏面側（受光面と反対側）に延びる配線部材２０と、太陽電池ストリング１０と配線部材２０との間に配置され、複数の太陽電池ストリング１０に固定される絶縁シート３０と、絶縁シート３０を太陽電池ストリング１０に固定する粘着テープ４０と、太陽電池ストリング１０の表面側を覆う表面保護材５０と、太陽電池ストリング１０、配線部材２０および絶縁シート３０の裏面側を覆う裏面保護材６０と、表面保護材５０と裏面保護材６０との間の空間を埋める封止材７０と、を備える。 The solar cell module 1 has a plurality of solar cell strings 10, a wiring member 20 that electrically connects between the solar cell strings 10 and extends to the back surface side (opposite the light receiving surface) of the solar cell string 10, and a solar cell. An insulating sheet 30 arranged between the string 10 and the wiring member 20 and fixed to the plurality of solar cell strings 10, an adhesive tape 40 for fixing the insulating sheet 30 to the solar cell string 10, and the surface of the solar cell string 10. Sealing that fills the space between the front surface protective material 50 that covers the side, the back surface protective material 60 that covers the back surface side of the solar cell string 10, the wiring member 20, and the insulating sheet 30, and the front surface protective material 50 and the back surface protective material 60. The material 70 and the material 70 are provided.
　太陽電池ストリング１０は、方向に一列に並べて接続された複数の太陽電池セル１１をそれぞれ有する。太陽電池ストリング１０は、いわゆるシングリング構造を有する。具体的には、太陽電池ストリング１０において、各太陽電池セル１１は、配列方向一方側の端部が隣接する太陽電池セル１１の他方側の端部の裏面側に重ねて配置されている。これによって、太陽電池セル１１間に隙間ができないので、光電変換に寄与する有効領域を大きくすることができる。 The solar cell string 10 has a plurality of solar cell cells 11 connected in a line in the direction. The solar cell string 10 has a so-called single ring structure. Specifically, in the solar cell string 10, each solar cell 11 is arranged so as to be overlapped with the back surface side of the other end of the adjacent solar cell 11 having one end in the arrangement direction. As a result, there is no gap between the solar cells 11, so that the effective region that contributes to photoelectric conversion can be increased.
　太陽電池セル１１は、例えば所定の大きさの大判半導体基板を分割したうちの１つから構成される矩形状の太陽電池セルとすることができる。所定の大きさとは、半導体ウェハの大きさ（例えば６インチ）で定まる大きさである。例えば、６インチの大判半導体基板の場合、この大判半導体基板を所定の一方向に例えば２個以上１０個以下に分割する。なお、太陽電池セル１１は、所定の大きさの大判半導体基板そのものから構成される正方形状の太陽電池セルであってもよい。 The solar cell 11 can be, for example, a rectangular solar cell composed of one of divided large-format semiconductor substrates having a predetermined size. The predetermined size is a size determined by the size of the semiconductor wafer (for example, 6 inches). For example, in the case of a 6-inch large-format semiconductor substrate, the large-format semiconductor substrate is divided into, for example, two or more and ten or less in a predetermined direction. The solar cell 11 may be a square solar cell composed of a large-format semiconductor substrate itself having a predetermined size.
　太陽電池セル１１は、電力を出力する１または複数対の電極１１１を有する。太陽電池セル１１は、電極１１１が表裏両面に設けられる両面電極型であってもよいし、電極１１１が裏面にのみに設けられる裏面電極型であってもよい。また、太陽電池ストリング１０において、一列に並んだ複数の太陽電池セル１１は、電気的に接続される。この太陽電池セル１１同士の接続は、導電性の接続部材であるインターコネクタ１２を用いて行うことができ、隣接し合う太陽電池セル１１の電極１１１同士を直接接合することによって行ってもよい。 The solar cell 11 has one or a plurality of pairs of electrodes 111 that output electric power. The solar cell 11 may be a double-sided electrode type in which the electrodes 111 are provided on both the front and back surfaces, or may be a back surface electrode type in which the electrodes 111 are provided only on the back surface. Further, in the solar cell string 10, a plurality of solar cell cells 11 arranged in a row are electrically connected. The solar cells 11 can be connected to each other by using the interconnector 12 which is a conductive connecting member, and the electrodes 111 of the adjacent solar cells 11 may be directly joined to each other.
　配線部材２０は、太陽電池ストリング１０の長手方向（太陽電池セル１１の配列方向）の両他端部にそれぞれ配設される。配線部材２０は、太陽電池セル１１の電極に接続される複数の電極配線部２１と、電極配線部２１間を接続する渡り配線部２２と、を有する構成とすることができる。また、少なくとも太陽電池ストリング１０の長手方向一方側の配線部材２０は、渡り配線部２２から裏面保護材６０の外側に延出するよう延びる引出配線部２３をさらに有する。配線部材２０は、例えば金属線、金属箔等によって形成することができる。 The wiring members 20 are arranged at both other ends in the longitudinal direction of the solar cell string 10 (arrangement direction of the solar cell 11). The wiring member 20 may have a plurality of electrode wiring portions 21 connected to the electrodes of the solar cell 11, and a crossover wiring portion 22 connecting between the electrode wiring portions 21. Further, at least the wiring member 20 on one side in the longitudinal direction of the solar cell string 10 further has a lead wiring portion 23 extending from the crossover wiring portion 22 to the outside of the back surface protective material 60. The wiring member 20 can be formed of, for example, a metal wire, a metal foil, or the like.
　電極配線部２１は、一端が太陽電池セル１１の電極１１１に接続され、他端が絶縁シート３０の裏面側に配置される。図示する実施形態では、絶縁シート３０が太陽電池セル１１の電極１１１を露出するよう配置されているため、電極配線部２１は、直線的に延びることができる。しかしながら、絶縁シート３０が太陽電池セル１１の電極を覆う場合には、電極配線部２１は、絶縁シート３０の太陽電池ストリング１０側から裏面保護材側に延びるようＵ字状またはヘアピン状に折り返されてもよい。また、太陽電池モジュール１の構成によっては、電極配線部２１は、太陽電池セル１１同士を接続するインターコネクタ１２と一体であってもよい。 One end of the electrode wiring portion 21 is connected to the electrode 111 of the solar cell 11, and the other end is arranged on the back surface side of the insulating sheet 30. In the illustrated embodiment, since the insulating sheet 30 is arranged so as to expose the electrode 111 of the solar cell 11, the electrode wiring portion 21 can extend linearly. However, when the insulating sheet 30 covers the electrodes of the solar cell 11, the electrode wiring portion 21 is folded back in a U shape or a hairpin shape so as to extend from the solar cell string 10 side of the insulating sheet 30 to the back surface protective material side. You may. Further, depending on the configuration of the solar cell module 1, the electrode wiring portion 21 may be integrated with the interconnector 12 that connects the solar cell 11s to each other.
　渡り配線部２２および引出配線部２３の少なくとも裏面保護材６０の内側に位置する部分は、絶縁シート３０の裏面側に配置される。これにより、配線部材２０が太陽電池ストリング１０の意図しない電極１１１等に接触して短絡を生じることを防止する。また、渡り配線部２２が絶縁シート３０の裏面側に配置されることで、表面側から太陽電池モジュール１を見たときに、渡り配線部２２が太陽電池ストリング１０の隙間から見えないようにできる。 The portion of the crossover wiring portion 22 and the drawer wiring portion 23 located at least inside the back surface protective material 60 is arranged on the back surface side of the insulating sheet 30. This prevents the wiring member 20 from coming into contact with the unintended electrode 111 or the like of the solar cell string 10 to cause a short circuit. Further, by arranging the crossover wiring portion 22 on the back surface side of the insulating sheet 30, when the solar cell module 1 is viewed from the front surface side, the crossover wiring portion 22 can be hidden from the gap of the solar cell string 10. ..
　絶縁シート３０は、太陽電池ストリング１０の太陽電池セル１１の配列方向両端部に、複数の太陽電池ストリング１０に跨って、好ましくはすべての太陽電池ストリング１０に跨って配置され、渡り配線部２２の表側に位置する横断部３１と、引出配線部２３が配置される部分に選択的に設けられる引出配線絶縁部３２と、を有する構成とすることができる。このように、絶縁シート３０を渡り配線部２２および引出配線部２３が配置される部分に選択的に設けることによって、後述する封止材７０による太陽電池ストリング１０の封止が容易となる。 The insulating sheet 30 is arranged at both ends of the solar cell string 10 in the arrangement direction in the arrangement direction, straddling a plurality of solar cell strings 10, preferably across all the solar cell strings 10, and is arranged across all the solar cell strings 10. The configuration may include a cross section 31 located on the front side and a lead-out wiring insulating portion 32 selectively provided in a portion where the lead-out wiring portion 23 is arranged. By selectively providing the insulating sheet 30 in the portion where the crossover wiring portion 22 and the drawer wiring portion 23 are arranged in this way, the solar cell string 10 can be easily sealed by the sealing material 70 described later.
　絶縁シート３０は、絶縁性を有するシート状の材料から形成される。絶縁シート３０の材質としては、例えばポリエチレンテレフタレート（ＰＥＴ）、アクリル樹脂、ポリエチレン（ＰＥ）、オレフィン系樹脂、含フッ素樹脂、含シリコーン樹脂等の樹脂等から形成することができる。 The insulating sheet 30 is formed of a sheet-like material having an insulating property. The material of the insulating sheet 30 can be formed from, for example, a resin such as polyethylene terephthalate (PET), an acrylic resin, polyethylene (PE), an olefin resin, a fluorine-containing resin, or a silicone-containing resin.
　絶縁シート３０は、後述する裏面保護材６０と略同色であることが好ましい。典型的には、絶縁シート３０は、裏面保護材６０と同種の材料から形成することができる。絶縁シート３０が裏面保護材６０と略同色であることによって、太陽電池モジュール１を表面側から見たときに、太陽電池ストリング１０の隙間から露出する絶縁シート３０が裏面保護材６０と同化するため、絶縁シート３０が美観を損なうことがない。なお、「略同色」とは、ＨＳＶ色空間において、色相、彩度および明度の差がそれぞれ１０％以下であることを意味し、５％以下であることが好ましい。 It is preferable that the insulating sheet 30 has substantially the same color as the back surface protective material 60 described later. Typically, the insulating sheet 30 can be made of the same material as the back surface protective material 60. Since the insulating sheet 30 has substantially the same color as the back surface protective material 60, the insulating sheet 30 exposed from the gap of the solar cell string 10 is assimilated with the back surface protective material 60 when the solar cell module 1 is viewed from the front surface side. , The insulating sheet 30 does not spoil the aesthetic appearance. In addition, "substantially the same color" means that the difference between hue, saturation and lightness is 10% or less in the HSV color space, and is preferably 5% or less.
　粘着テープ４０は、太陽電池セル１１と絶縁シート３０とに跨って貼設され、これによって絶縁シート３０を太陽電池セル１１に固定する。絶縁シート３０は、それぞれの太陽電池ストリング１０に対して、２つの比較的小さい粘着テープ４０により固定されることが好ましい。粘着テープ４０の大きさとしては、例えば幅８ｍｍ以上２０ｍｍ以下、長さ１０ｍｍ以上３０ｍｍ以下とすることができる。２つの粘着テープ４０によって絶縁シート３０と太陽電池ストリング１０との相対位置を定めることで、粘着テープ４０の貼り直しによる太陽電池ストリング１０の相対位置の微調整が容易となる。 The adhesive tape 40 is attached so as to straddle the solar cell 11 and the insulating sheet 30, thereby fixing the insulating sheet 30 to the solar cell 11. The insulating sheet 30 is preferably fixed to each solar cell string 10 by two relatively small adhesive tapes 40. The size of the adhesive tape 40 can be, for example, a width of 8 mm or more and 20 mm or less, and a length of 10 mm or more and 30 mm or less. By determining the relative positions of the insulating sheet 30 and the solar cell string 10 with the two adhesive tapes 40, it becomes easy to finely adjust the relative positions of the solar cell string 10 by reattaching the adhesive tape 40.
　粘着テープ４０の厚みとしては、５０μｍ以上１００μｍ以下とすることが好ましい。このような厚みの粘着テープを用いることによって、太陽電池モジュール１の厚みを不必要に増大させることなく、太陽電池セル１１と絶縁シート３０との相対位置を適切に定めることができる。 The thickness of the adhesive tape 40 is preferably 50 μm or more and 100 μm or less. By using the adhesive tape having such a thickness, the relative position between the solar cell 11 and the insulating sheet 30 can be appropriately determined without unnecessarily increasing the thickness of the solar cell module 1.
　表面保護材５０は、太陽電池ストリング１０の表面側を保護する層である。表面保護材５０は、例えばガラス、ポリカーボネート、アクリル樹脂などの透明で耐傷性を有する材料から形成される。表面保護材５０は、太陽電池モジュール１の形状を保持できる強度を備えるために十分な厚さを有することが好ましい。 The surface protective material 50 is a layer that protects the surface side of the solar cell string 10. The surface protective material 50 is formed of a transparent and scratch-resistant material such as glass, polycarbonate, or acrylic resin. The surface protective material 50 preferably has a sufficient thickness to have enough strength to hold the shape of the solar cell module 1.
　また、表面保護材５０の表面は、凹凸を有する形状に加工されていてもよく、反射防止コーティング層で被覆されていてもよい。このような表面保護材５０を用いることによって、表面保護材５０が入射する光を反射させにくいので、より多くの光を太陽電池セル１１に導き、太陽電池モジュール１の光電変換効率を向上することができる。 Further, the surface of the surface protective material 50 may be processed into a shape having irregularities, or may be coated with an antireflection coating layer. By using such a surface protective material 50, it is difficult for the surface protective material 50 to reflect the incident light, so that more light can be guided to the solar cell 11 and the photoelectric conversion efficiency of the solar cell module 1 can be improved. Can be done.
　裏面保護材６０は、太陽電池ストリング１０の裏面側を保護する層である。裏面保護材６０の材質としては、特に限定されるものではないが、水等の浸入を確実に防止できる（遮水性の高い）材質が好ましい。具体的には、裏面保護材６０は、例えばガラス、ポリエチレンテレフタレート（ＰＥＴ）、アクリル樹脂、ポリエチレン（ＰＥ）、オレフィン系樹脂、含フッ素樹脂、含シリコーン樹脂等の樹脂等から形成することができる。また、裏面保護材６０は、これらの材料と例えばアルミニウム箔等の金属箔のような遮水性に優れる材料との積層体としてもよい。 The back surface protective material 60 is a layer that protects the back surface side of the solar cell string 10. The material of the back surface protective material 60 is not particularly limited, but a material that can reliably prevent the ingress of water or the like (highly water-impervious) is preferable. Specifically, the back surface protective material 60 can be formed of, for example, a resin such as glass, polyethylene terephthalate (PET), acrylic resin, polyethylene (PE), olefin resin, fluorine-containing resin, silicone-containing resin, or the like. Further, the back surface protective material 60 may be a laminate of these materials and a material having excellent water shielding properties such as a metal foil such as an aluminum foil.
　裏面保護材６０は、太陽電池セル１１を表面側から見たときの色と近似した色を有することが好ましい。これにより、太陽電池モジュール１を表面側から見たときに、太陽電池ストリング１０の隙間を目立たなくできるので、太陽電池ストリング１０の配置の誤差が美観に与える影響を軽減できる。 The back surface protective material 60 preferably has a color similar to the color when the solar cell 11 is viewed from the front surface side. As a result, when the solar cell module 1 is viewed from the surface side, the gaps between the solar cell strings 10 can be made inconspicuous, so that the influence of the arrangement error of the solar cell strings 10 on the aesthetics can be reduced.
　封止材７０は、表面保護材５０と裏面保護材６０との間の太陽電池ストリング１０、配線部材２０、絶縁シート３０および粘着テープ４０の周囲の空間に充填される。封止材７０は、水分等により太陽電池ストリング１０、特に太陽電池セル１１が劣化することを抑制する。 The sealing material 70 fills the space around the solar cell string 10, the wiring member 20, the insulating sheet 30, and the adhesive tape 40 between the front surface protective material 50 and the back surface protective material 60. The sealing material 70 suppresses deterioration of the solar cell string 10, particularly the solar cell 11 due to moisture or the like.
　封止材７０は、透明性を有し、太陽電池ストリング１０、表面保護材５０および裏面保護材６０に対する（好ましくは配線部材２０、絶縁シート３０および粘着テープ４０に対しても）密着性を有する材料から形成される。封止材７０は、熱プレスによりこれらの構成要素の間の空間に充填できるよう、熱可塑性を有する材料から形成されることが好ましい。具体的には、封止材７０は、例えばエチレン／酢酸ビニル共重合体（ＥＶＡ）、エチレン／α－オレフィン共重合体、エチレン／酢酸ビニル／トリアリルイソシアヌレート（ＥＶＡＴ）、ポリビニルブチラート（ＰＶＢ）、アクリル樹脂、ウレタン樹脂、シリコーン樹脂等から形成することができる。 The sealing material 70 has transparency and has adhesion to the solar cell string 10, the front surface protective material 50 and the back surface protective material 60 (preferably also to the wiring member 20, the insulating sheet 30 and the adhesive tape 40). Formed from material. The encapsulant 70 is preferably formed from a material having thermoplasticity so that the space between these components can be filled by hot pressing. Specifically, the encapsulant 70 is, for example, ethylene / vinyl acetate copolymer (EVA), ethylene / α-olefin copolymer, ethylene / vinyl acetate / triallyl isocyanurate (EVAT), polyvinyl butyral (PVB). ), Acrylic resin, urethane resin, silicone resin and the like.
　封止材７０は、太陽電池ストリング１０と絶縁シート３０との間に連続する層を形成することが好ましい。これにより、太陽電池ストリング１０と絶縁シート３０とを接合するこができるので、太陽電池ストリング１０を封止する効果を向上できる。 The sealing material 70 preferably forms a continuous layer between the solar cell string 10 and the insulating sheet 30. As a result, the solar cell string 10 and the insulating sheet 30 can be joined, so that the effect of sealing the solar cell string 10 can be improved.
　以上の構成を有する太陽電池モジュール１は、表面を下にして配置した表面保護材５０の上に封止材７０の表側部分を形成する材料からなる第１封止材シートを積層する工程と、第１封止材シートの上に複数の太陽電池ストリング１０を配置する工程と、複数の太陽電池ストリングを配線部材２０で接続する工程と、複数の太陽電池ストリング１０に粘着テープ４０を用いて絶縁シート３０を固定する工程と、絶縁シート３０の上に、封止材７０の裏側部分を形成する材料からなる第２封止材シートおよび裏面保護材６０を積層する工程と、熱プレスにより第１封止材シートおよび第２封止材シートを溶融させて表面保護材５０と裏面保護材６０との間の空間を埋める封止材７０を形成する工程と、を備える製造方法によって製造することができる。 The solar cell module 1 having the above configuration includes a step of laminating a first encapsulant sheet made of a material for forming a front side portion of the encapsulant 70 on a surface protective material 50 arranged with the surface facing down. A step of arranging a plurality of solar cell strings 10 on a first sealing material sheet, a step of connecting a plurality of solar cell strings with a wiring member 20, and insulating the plurality of solar cell strings 10 with an adhesive tape 40. A step of fixing the sheet 30, a step of laminating a second sealing material sheet and a back surface protective material 60 made of a material forming the back side portion of the sealing material 70 on the insulating sheet 30, and a first step of heat pressing. It can be manufactured by a manufacturing method including a step of melting a sealing material sheet and a second sealing material sheet to form a sealing material 70 that fills a space between the front surface protective material 50 and the back surface protective material 60. can.
　複数の太陽電池ストリング１０に粘着テープ４０を用いて絶縁シート３０を固定する工程では、複数の太陽電池ストリング１０が等間隔で並ぶよう、太陽電池ストリング１０の位置を微調整しながら、絶縁シート３０を固定する。このとき、絶縁シート３０をそれぞれの太陽電池ストリング１０に対して２つの粘着テープ４０で固定することで、太陽電池ストリング１０の位置および向きを比較的容易に調整できる。太陽電池ストリング１０に絶縁シート３０を固定することによって、後の熱プレスにより封止材７０を形成する工程において、絶縁シート３０が太陽電池ストリング１０を保持するので、溶融した封止材形成材料に押されて太陽電池ストリング１０が位置ずれすることを防止できる。 In the step of fixing the insulating sheet 30 to the plurality of solar cell strings 10 using the adhesive tape 40, the insulating sheet 30 is finely adjusted so that the plurality of solar cell strings 10 are lined up at equal intervals. To fix. At this time, by fixing the insulating sheet 30 to each solar cell string 10 with two adhesive tapes 40, the position and orientation of the solar cell string 10 can be adjusted relatively easily. By fixing the insulating sheet 30 to the solar cell string 10, in the step of forming the sealing material 70 by a subsequent heat press, the insulating sheet 30 holds the solar cell string 10, so that the molten sealing material forming material can be used. It is possible to prevent the solar cell string 10 from being pushed and misaligned.
　また、絶縁シート３０を固定する工程では、太陽電池ストリング１０と絶縁シート３０との間に封止材形成材料のシートを挟み込んでもよい。これにより、太陽電池ストリング１０と絶縁シート３０との間に連続する封止材形成材料の層を形成することができるので、太陽電池ストリング１０の封止がより確実となる。太陽電池ストリング１０と絶縁シート３０との間に挟み込む封止材形成材料のシートは、熱プレスする工程で流動化して広がり得るため、絶縁シート３０よりも小さいものであってもよい。 Further, in the step of fixing the insulating sheet 30, a sheet of the sealing material forming material may be sandwiched between the solar cell string 10 and the insulating sheet 30. As a result, a continuous layer of the sealing material forming material can be formed between the solar cell string 10 and the insulating sheet 30, so that the solar cell string 10 can be more reliably sealed. The sheet of the sealing material forming material sandwiched between the solar cell string 10 and the insulating sheet 30 may be smaller than the insulating sheet 30 because it can be fluidized and spread in the process of heat pressing.
　なお、複数の太陽電池ストリングを配線部材２０で接続する工程は、第１封止材シートの上に複数の太陽電池ストリング１０を配置する工程の前に行ってもよい。つまり、予め複数の太陽電池ストリング１０を配線部材で接続したものを第１封止材シートの上に積層してもよい。 The step of connecting the plurality of solar cell strings with the wiring member 20 may be performed before the step of arranging the plurality of solar cell strings 10 on the first sealing material sheet. That is, a plurality of solar cell strings 10 connected in advance by wiring members may be laminated on the first sealing material sheet.
　以上、本発明の実施形態について説明したが、本発明は上述した実施形態に限定されることなく、種々の変更および変形が可能である。例として、本発明に係る太陽電池モジュールでは、粘着テープを用いず、絶縁シートの太陽電池ストリングに対向する面に粘着剤を積層することにより、絶縁シートを太陽電池ストリングに固定してもよい。この場合、粘着剤が太陽電池ストリングの隙間から視認されないよう、粘着剤を部分的に積層してもよい。 Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications and modifications can be made. As an example, in the solar cell module according to the present invention, the insulating sheet may be fixed to the solar cell string by laminating an adhesive on the surface of the insulating sheet facing the solar cell string without using the adhesive tape. In this case, the adhesive may be partially laminated so that the adhesive is not visible through the gaps in the solar cell string.
　１　太陽電池モジュール
　１０　太陽電池ストリング
　１１　太陽電池セル
　１２　インターコネクタ
　２１　電極配線部
　２２　渡り配線部
　２３　引出配線部
　２０　配線部材
　３０　絶縁シート
　３１　横断部
　３２　引出配線絶縁部
　４０　粘着テープ
　５０　表面保護材
　６０　裏面保護材
　７０　封止材
　１１１　電極 1 Solar cell module 10 Solar cell string 11 Solar cell 12 Interconnector 21 Electrode wiring part 22 Crossing wiring part 23 Drawer wiring part 20 Wiring member 30 Insulation sheet 31 Cross section 32 Drawer wiring insulation part 40 Adhesive tape 50 Surface protection material 60 Back side Protective material 70 Encapsulant 111 Electrode

Claims (8)

  1. 　一列に並べて接続された複数の太陽電池セルをそれぞれ有する複数の太陽電池ストリングと、
    　前記太陽電池ストリングの間を電気的に接続し、前記太陽電池ストリングの裏面側に延びる配線部材と、
    　前記太陽電池ストリングと前記配線部材との間に配置され、複数の前記太陽電池ストリングに固定される絶縁シートと、
    　前記太陽電池ストリングの表面側を覆う表面保護材と、
    　前記太陽電池ストリング、前記配線部材および前記絶縁シートの裏面側を覆う裏面保護材と、
    　前記表面保護材と前記裏面保護材との間の空間を埋める封止材と、
    を備える太陽電池モジュール。     A plurality of solar cell strings each having a plurality of solar cells connected side by side in a row, and
    A wiring member that electrically connects between the solar cell strings and extends to the back surface side of the solar cell strings.
    An insulating sheet arranged between the solar cell string and the wiring member and fixed to the plurality of solar cell strings, and
    A surface protective material that covers the surface side of the solar cell string,
    The solar cell string, the wiring member, and the back surface protective material covering the back surface side of the insulating sheet,
    A sealing material that fills the space between the front surface protective material and the back surface protective material,
    A solar cell module equipped with.
  2. 　前記絶縁シートを前記太陽電池ストリングに固定する粘着テープをさらに備える、請求項１に記載の太陽電池モジュール。 The solar cell module according to claim 1, further comprising an adhesive tape for fixing the insulating sheet to the solar cell string.
  3. 　前記絶縁シートは、それぞれの前記太陽電池ストリングに対して２つの前記粘着テープにより固定される、請求項２に記載の太陽電池モジュール。 The solar cell module according to claim 2, wherein the insulating sheet is fixed to each of the solar cell strings by the two adhesive tapes.
  4. 　前記粘着テープの厚みが５０μｍ以上１００μｍ以下である、請求項２または３に記載の太陽電池モジュール。 The solar cell module according to claim 2 or 3, wherein the thickness of the adhesive tape is 50 μm or more and 100 μm or less.
  5. 　前記絶縁シートは、前記裏面保護材と略同色である、請求項１から４のいずれかに記載の太陽電池モジュール。 The solar cell module according to any one of claims 1 to 4, wherein the insulating sheet has substantially the same color as the back surface protective material.
  6. 　前記絶縁シートは、前記太陽電池ストリングの前記太陽電池セルの配列方向両端部に配置されている、請求項１から５のいずれかに記載の太陽電池モジュール。 The solar cell module according to any one of claims 1 to 5, wherein the insulating sheet is arranged at both ends of the solar cell string in the arrangement direction of the solar cell.
  7. 　前記封止材は、前記太陽電池ストリングと前記絶縁シートとの間に連続する層を形成する、請求項１から６のいずれかに記載の太陽電池モジュール。 The solar cell module according to any one of claims 1 to 6, wherein the sealing material forms a continuous layer between the solar cell string and the insulating sheet.
  8. 　前記太陽電池ストリングにおいて、前記太陽電池セルは、一方側の端部が隣接する前記太陽電池セルの他方側の端部の裏面側に重ねて配置される、請求項１から７のいずれかに記載の太陽電池モジュール。 The method according to any one of claims 1 to 7, wherein in the solar cell string, the solar cell is arranged so that one end thereof is overlapped with the back surface side of the other end of the adjacent solar cell. Solar cell module.
PCT/JP2021/004840 2020-02-12 2021-02-09 Solar cell module WO2021162009A1 (en)

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