WO2021162009A1 - Module de cellules solaires - Google Patents

Module de cellules solaires Download PDF

Info

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
Authority
WO
WIPO (PCT)
Prior art keywords
solar cell
insulating sheet
protective material
surface protective
back surface
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2021/004840
Other languages
English (en)
Japanese (ja)
Inventor
徹 寺下
紳平 岡本
広平 小島
中村　淳一
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kaneka Corp
Original Assignee
Kaneka Corp
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 Kaneka Corp filed Critical Kaneka Corp
Priority to JP2022500425A priority Critical patent/JP7637662B2/ja
Priority to CN202180013814.7A priority patent/CN115066758A/zh
Publication of WO2021162009A1 publication Critical patent/WO2021162009A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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.

Landscapes

  • Photovoltaic Devices (AREA)

Abstract

La présente invention a pour but de fournir un module de cellules solaires qui présente une apparence esthétique supérieure. Un module de cellule solaire 1 selon un aspect de la présente invention comprend : une pluralité de chaînes de cellules solaires 10 ayant chacune une pluralité de cellules solaires 11 disposées côte à côte en ligne et connectées ; un élément de câblage 20 qui connecte électriquement les chaînes de cellules solaires 10 et s'étend vers le côté de surface arrière des chaînes de cellules solaires 10 ; une feuille isolante 30 qui est disposée entre les chaînes de cellules solaires 10 et l'élément de câblage 20, et qui est fixée à la pluralité de chaînes de cellules solaires 10 ; un matériau de protection de surface avant 50 qui recouvre les côtés de surface avant des chaînes de cellules solaires 10 ; un matériau de protection de surface arrière 60 qui recouvre les côtés de surface arrière des chaînes de cellules solaires 10, l'élément de câblage 20 et la feuille isolante 30 ; et un matériau d'étanchéité 70 destiné à remplir un espace entre le matériau de protection de surface avant et le matériau de protection de surface arrière 50.
PCT/JP2021/004840 2020-02-12 2021-02-09 Module de cellules solaires Ceased WO2021162009A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2022500425A JP7637662B2 (ja) 2020-02-12 2021-02-09 太陽電池モジュール
CN202180013814.7A CN115066758A (zh) 2020-02-12 2021-02-09 太阳能电池模块

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020021744 2020-02-12
JP2020-021744 2020-02-12

Publications (1)

Publication Number Publication Date
WO2021162009A1 true WO2021162009A1 (fr) 2021-08-19

Family

ID=77292399

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2021/004840 Ceased WO2021162009A1 (fr) 2020-02-12 2021-02-09 Module de cellules solaires

Country Status (3)

Country Link
JP (1) JP7637662B2 (fr)
CN (1) CN115066758A (fr)
WO (1) WO2021162009A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023054229A1 (fr) * 2021-09-28 2023-04-06 株式会社カネカ Dispositif de batterie solaire et module de batterie solaire

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005209985A (ja) * 2004-01-26 2005-08-04 Noritz Corp 太陽電池セルの電力出力用リード線
JP2009224598A (ja) * 2008-03-17 2009-10-01 Sharp Corp 太陽電池モジュールおよび太陽電池モジュールの製造方法
WO2012090622A1 (fr) * 2010-12-28 2012-07-05 三洋電機株式会社 Module de cellules solaires
JP2012160687A (ja) * 2011-02-01 2012-08-23 N Ii T Kk 太陽電池パネル
CN106098824A (zh) * 2016-07-13 2016-11-09 合肥中南光电有限公司 太阳能电池组件的安装结构
JP2017517145A (ja) * 2014-05-27 2017-06-22 サンパワー コーポレイション こけら葺き状太陽電池モジュール
JP2018125369A (ja) * 2017-01-31 2018-08-09 シャープ株式会社 太陽電池モジュール及びその製造方法
JP2018198285A (ja) * 2017-05-24 2018-12-13 パナソニック株式会社 太陽電池モジュールおよび太陽電池モジュールの製造方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103943704A (zh) * 2014-03-18 2014-07-23 连云港神舟新能源有限公司 一种指叉背接触太阳电池组件及其制备方法
CN108963023B (zh) * 2017-05-27 2024-05-17 常州亚玛顿股份有限公司 一种双玻光伏组件及其制作方法

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005209985A (ja) * 2004-01-26 2005-08-04 Noritz Corp 太陽電池セルの電力出力用リード線
JP2009224598A (ja) * 2008-03-17 2009-10-01 Sharp Corp 太陽電池モジュールおよび太陽電池モジュールの製造方法
WO2012090622A1 (fr) * 2010-12-28 2012-07-05 三洋電機株式会社 Module de cellules solaires
JP2012160687A (ja) * 2011-02-01 2012-08-23 N Ii T Kk 太陽電池パネル
JP2017517145A (ja) * 2014-05-27 2017-06-22 サンパワー コーポレイション こけら葺き状太陽電池モジュール
CN106098824A (zh) * 2016-07-13 2016-11-09 合肥中南光电有限公司 太阳能电池组件的安装结构
JP2018125369A (ja) * 2017-01-31 2018-08-09 シャープ株式会社 太陽電池モジュール及びその製造方法
JP2018198285A (ja) * 2017-05-24 2018-12-13 パナソニック株式会社 太陽電池モジュールおよび太陽電池モジュールの製造方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023054229A1 (fr) * 2021-09-28 2023-04-06 株式会社カネカ Dispositif de batterie solaire et module de batterie solaire

Also Published As

Publication number Publication date
JP7637662B2 (ja) 2025-02-28
JPWO2021162009A1 (fr) 2021-08-19
CN115066758A (zh) 2022-09-16

Similar Documents

Publication Publication Date Title
CN111615752B (zh) 太阳能电池模块
JP4860652B2 (ja) 太陽電池モジュールおよびその製造方法
EP1973171A2 (fr) Module de cellule solaire
US20100294336A1 (en) Center tapped receiver
CN107425082B (zh) 太阳能电池模块
CN104205356A (zh) 背接触型太阳能电池模块
JP2005079170A (ja) 太陽電池モジュールおよびその製造方法
WO2012176419A1 (fr) Module de batteries solaires, et procédé de fabrication de celui-ci
EP2141747B2 (fr) Module de cellule solaire
US20140209167A1 (en) Solar cell module
WO2018061367A1 (fr) Module de cellules solaires
WO2020184301A1 (fr) Dispositif de batterie solaire, module de batterie solaire et procédé de production de dispositif de batterie solaire
WO2013183395A1 (fr) Module de batterie solaire et procédé de fabrication de module de batterie solaire
JPWO2020054129A1 (ja) 太陽電池デバイスおよび太陽電池モジュール
JPWO2020054130A1 (ja) 太陽電池モジュール
JP6809816B2 (ja) 太陽電池モジュール
US20210175383A1 (en) Solar cell device and method for manufacturing solar cell device
JP2011029273A (ja) 太陽電池モジュール
JP6104612B2 (ja) 太陽電池モジュール
CN103597609B (zh) 太阳能电池模块及其制造方法
WO2021162009A1 (fr) Module de cellules solaires
JP5084133B2 (ja) 光起電力素子、光起電力モジュールおよび光起電力モジュールの製造方法
JP2005072511A (ja) 太陽電池モジュールおよびその製造方法
JP2024136865A (ja) 太陽電池モジュール
JP7179779B2 (ja) 太陽電池セル用の接続部材セット、並びにそれを用いた太陽電池ストリング及び太陽電池モジュール

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21754528

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2022500425

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21754528

Country of ref document: EP

Kind code of ref document: A1