WO2014050410A1 - Module de cellule solaire - Google Patents

Module de cellule solaire Download PDF

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Publication number
WO2014050410A1
WO2014050410A1 PCT/JP2013/072867 JP2013072867W WO2014050410A1 WO 2014050410 A1 WO2014050410 A1 WO 2014050410A1 JP 2013072867 W JP2013072867 W JP 2013072867W WO 2014050410 A1 WO2014050410 A1 WO 2014050410A1
Authority
WO
WIPO (PCT)
Prior art keywords
solar cell
cell module
photoelectric conversion
electrode
finger
Prior art date
Application number
PCT/JP2013/072867
Other languages
English (en)
Japanese (ja)
Inventor
俊行 佐久間
Original Assignee
三洋電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三洋電機株式会社 filed Critical 三洋電機株式会社
Priority to JP2014538297A priority Critical patent/JPWO2014050410A1/ja
Publication of WO2014050410A1 publication Critical patent/WO2014050410A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/02—Details
    • 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
    • H01L31/0201—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 specially adapted module bus-bar structures
    • 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
    • H01L31/044—PV modules or arrays of single PV cells including bypass diodes
    • 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.
  • Patent Document 1 describes a solar cell module including a plurality of solar cells.
  • the solar cell is a back junction type solar cell having first and second electrodes on the back surface side.
  • Each of the first and second electrodes has a plurality of finger portions extending along one direction. The extending direction of the finger portion is parallel to the longitudinal direction of the solar cell module.
  • the main object of the present invention is to provide a solar cell module that is not easily damaged when stress is applied.
  • the solar cell module according to the present invention is a rectangular solar cell module including a solar cell.
  • the solar cell includes a photoelectric conversion unit, a first electrode, and a second electrode.
  • the first electrode is provided on one main surface of the photoelectric conversion unit.
  • the first electrode has a first finger portion.
  • the first finger portion extends along one direction.
  • the second electrode is provided on one main surface of the photoelectric conversion unit.
  • the second electrode has a second finger portion.
  • the second finger portion extends along one direction.
  • the solar cell is arranged so that the extending direction of the first and second finger portions is parallel to the short side of the solar cell module.
  • FIG. 1 is a schematic back view of a solar cell module according to an embodiment of the present invention.
  • FIG. 2 is a schematic cross-sectional view of a solar cell module according to an embodiment of the present invention.
  • FIG. 3 is a schematic rear view of the solar cell in one embodiment of the present invention.
  • the planar view shape of the solar cell module 1 shown in FIGS. 1 and 2 is a rectangular shape.
  • the longitudinal direction of the solar cell module 1 is along the y-axis direction.
  • the short direction of the solar cell module 1 is along the x-axis direction.
  • the solar cell module 1 includes a plurality of solar cell strings 10. Each of the plurality of solar cell strings 10 is connected to the wiring member 32 and electrically connected to the adjacent wiring member 32 by the connection wiring member 33. As shown in FIG. 2, the plurality of solar cell strings 10 are arranged between the first protection member 11 and the second protection member 12. The first protective member 11 is located on the light receiving surface 20 a side of the solar cell 20. The second protective member 12 is located on the back surface 20 b side of the solar cell 20. A sealing layer 13 is provided between the first protective member 11 and the second protective member 12. A plurality of solar cell strings 10 are sealed by the sealing layer 13.
  • the plurality of solar cell strings 10 are connected to an output wiring member 34 for taking out the electric power generated by the solar cell 20 and a wiring member 35 for connecting a bypass diode (not shown).
  • a bypass diode means that the electric power which the other solar cell 20 generate
  • the output wiring member 34 and the wiring member 35 are arranged on the back surface 20 b side of the solar cell 20, and the insulating member 36 is interposed between the solar cell 20, the output wiring member 34 and the wiring member 35 in order to insulate the solar cell 20. Is provided.
  • the first protective member 11 can be made of a translucent member such as a glass plate or a resin plate.
  • the 2nd protection member 12 can be constituted by a member which has flexibility, such as a resin sheet and a resin sheet which interposed metal foil, for example.
  • the sealing layer 13 can be made of, for example, a resin such as ethylene / vinyl acetate copolymer (EVA), polyvinyl butyral (PVB), polyethylene (PE), or polyurethane (PU).
  • EVA ethylene / vinyl acetate copolymer
  • PVB polyvinyl butyral
  • PE polyethylene
  • PU polyurethane
  • each of the plurality of solar cell strings 10 includes a plurality of solar cells 20.
  • the solar cells 20 are electrically connected by a wiring material 31.
  • the arrangement direction of the solar cells 20 is parallel to the x-axis direction that is the short direction of the solar cell module 1.
  • the solar cell 20 includes a photoelectric conversion unit 23 and first and second electrodes 21 and 22.
  • the photoelectric conversion unit 23 has first and second main surfaces 23a and 23b.
  • the first main surface 23 a of the photoelectric conversion unit 23 constitutes the light receiving surface 20 a of the solar cell 20, and the second main surface 23 b constitutes the back surface 20 b of the solar cell 20.
  • the photoelectric conversion unit 23 is a member that generates carriers such as holes and electrons when receiving light.
  • the photoelectric conversion unit 23 may generate carriers only when light is received on the first main surface 23a, or not only when light is received on the first main surface 23a, but also on the second main surface 23b.
  • a carrier may be generated even when light is received. That is, the solar cell 20 may be a double-sided light receiving solar cell.
  • the type of the photoelectric conversion unit 23 is not particularly limited.
  • the photoelectric conversion unit 23 can be configured using, for example, a crystalline silicon plate.
  • the first and second electrodes 21 and 22 are provided on the second main surface 23b of the photoelectric conversion unit 23, respectively. Therefore, the solar cell 20 is a back junction solar cell.
  • the first electrode 21 has a plurality of finger portions 21a and a bus bar portion 21b.
  • the plurality of finger portions 21a are electrically connected to the bus bar portion 21b.
  • the second electrode 22 has a plurality of finger portions 22a and a bus bar portion 22b.
  • the plurality of finger portions 22a are electrically connected to the bus bar portion 22b.
  • the 1st and 2nd electrode is comprised only by the finger part, respectively, and does not need to have a bus-bar part.
  • the finger part 21a and the finger part 22a each extend along the x-axis direction. That is, the finger part 21a and the finger part 22a extend along the short direction of the solar cell module 1, respectively.
  • the longitudinal direction of the solar cell module is generally parallel to the arrangement direction of the solar cells in the solar cell string.
  • the arrangement direction of the solar cells is parallel to the extending direction of the finger portions of the first and second electrodes of the solar cell. Therefore, the longitudinal direction of the solar cell module is generally parallel to the extending direction of the finger portions.
  • the displacement of the central portion of the solar cell module that is, the sinking amount becomes the largest.
  • the sinking amount with respect to the length of the side is larger in the shorter direction of the solar cell module. That is, the curvature in the short direction of the solar cell module is larger than the curvature in the longitudinal direction.
  • the rigidity of the back junction solar cell is relatively strong in the direction in which the finger portions extend, and relatively weak in the direction in which the finger portions are arranged.
  • the solar cell is easily damaged when the solar cell module is stressed and deformed into a convex shape or a concave shape.
  • the solar cell 20 is arranged so that the extending direction of the finger portions 21 a and 22 a is parallel to the short direction of the solar cell module 1.
  • the short direction (x-axis direction) in which the curvature becomes relatively large when the solar cell module 1 is deformed is parallel to the direction in which the finger portions 21a and 22a extend, and the direction in which the solar cell 20 has high rigidity. I'm doing it. Therefore, when the solar cell module 1 is stressed and deformed, the solar cell 20 is not easily damaged.
  • the solar cell 20 can be prevented from being damaged when the solar cell module 1 is deformed, and the deformation amount of the solar cell module 1 can be allowed to increase. Accordingly, the rigidity required for the first and second protective members 11, 12 and the like can be reduced. Therefore, the 1st and 2nd protection members 11 and 12 can be made thin. Moreover, the effect which buffers the stress added to the solar cell 20 requested
  • the voltage applied to the bypass diodes connected between the plurality of solar cell strings 10 can be lowered.

Landscapes

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

Abstract

L'invention concerne un module de cellule solaire, qui n'est pas susceptible à une rupture lorsqu'une contrainte est appliquée à celui-ci. Un module de cellule solaire (1) est un module de cellule solaire rectangulaire qui comprend des cellules solaires (20). Chacune des cellules solaires (20) possède une section de conversion photoélectrique (23), une première électrode (21), et une seconde électrode (22). La première électrode (21) est disposée sur une surface principale (23b) de la section de conversion photoélectrique (23). La première électrode (21) possède une section de doigt (21a). La première section de doigt (21a) s'étend dans une direction. La seconde électrode (22) est disposée sur la dite surface principale (23b) de la section de conversion photoélectrique (23). La seconde électrode (22) possède une seconde section de doigt (22a). La seconde section de doigt (22a) s'étend dans ladite direction. Chacune des cellules solaires (20) est disposée de telle sorte que la direction dans laquelle les première et seconde sections de doigt (21a, 22a) s'étendent est parallèle au côté court du module de cellule solaire (1).
PCT/JP2013/072867 2012-09-27 2013-08-27 Module de cellule solaire WO2014050410A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2014538297A JPWO2014050410A1 (ja) 2012-09-27 2013-08-27 太陽電池モジュール

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012-214385 2012-09-27
JP2012214385 2012-09-27

Publications (1)

Publication Number Publication Date
WO2014050410A1 true WO2014050410A1 (fr) 2014-04-03

Family

ID=50387819

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2013/072867 WO2014050410A1 (fr) 2012-09-27 2013-08-27 Module de cellule solaire

Country Status (2)

Country Link
JP (1) JPWO2014050410A1 (fr)
WO (1) WO2014050410A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JP2011003735A (ja) * 2009-06-18 2011-01-06 Sharp Corp 裏面電極型太陽電池セル、配線シート付き太陽電池セルおよび太陽電池モジュール

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5642591B2 (ja) * 2011-02-28 2014-12-17 三洋電機株式会社 太陽電池モジュール

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JP2011003735A (ja) * 2009-06-18 2011-01-06 Sharp Corp 裏面電極型太陽電池セル、配線シート付き太陽電池セルおよび太陽電池モジュール

Also Published As

Publication number Publication date
JPWO2014050410A1 (ja) 2016-08-22

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