EP2589089A2 - Couche de revêtement pour cellule solaire - Google Patents

Couche de revêtement pour cellule solaire

Info

Publication number
EP2589089A2
EP2589089A2 EP11728859.7A EP11728859A EP2589089A2 EP 2589089 A2 EP2589089 A2 EP 2589089A2 EP 11728859 A EP11728859 A EP 11728859A EP 2589089 A2 EP2589089 A2 EP 2589089A2
Authority
EP
European Patent Office
Prior art keywords
flaps
solar cell
corner
carrier
flap
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.)
Withdrawn
Application number
EP11728859.7A
Other languages
German (de)
English (en)
Inventor
Heinz Meier
Norman Blank
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.)
Sika Technology AG
Original Assignee
Sika Technology AG
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 Sika Technology AG filed Critical Sika Technology AG
Priority to EP11728859.7A priority Critical patent/EP2589089A2/fr
Publication of EP2589089A2 publication Critical patent/EP2589089A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • H01L31/0216—Coatings
    • H01L31/02161—Coatings for devices characterised by at least one potential jump barrier or surface barrier
    • H01L31/02167—Coatings for devices characterised by at least one potential jump barrier or surface barrier for solar 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
    • H01L31/04—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
    • 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
    • H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
    • 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 invention is based on a module comprising a solar cell arranged on a carrier as well as a cover layer according to the preamble of the first claim.
  • Solar modules with solar cells mounted on carriers are often coated with a cover layer in order to protect the solar cells from moisture and dirt.
  • the cover layer can dissolve laterally from the support, which moisture can penetrate between the cover layer and the support and damage the solar cell.
  • the object of the present invention is therefore to improve a module of the type mentioned in the beginning, to minimize the detachment from the cover layer applied to the carrier and, as a result, the penetration of moisture. According to the invention, this is due to the features of the first
  • Cover layer which is mounted on the side facing away from the carrier of the solar cell comprises, the cover layer has side flaps, corner flaps and recesses.
  • a recess in each case forms a side edge of a side flap, respectively. a side edge of a corner flap.
  • the side flaps and corner flaps are separated by a corresponding fold line and arranged on the side facing away from the solar cell side of the carrier, wherein the side edges formed by a recess of the corresponding side flap and corner flap are in contact.
  • the side flaps of the cover layer and the corner flaps of the cover layer are parts of the cover layer. They therefore consist of the same material and arise for example in the
  • the composite is protected from external influences such as climate, UV radiation and especially direct rain.
  • the fold line of the corner flaps intersects the fold line of the adjacent side flaps, in particular at a location of the fold line of the side flap which is 3-15 mm from the point of contact of the side flaps
  • FIG. 2 shows a cross section of a module 1 according to the invention, in which the cover layer 4 is arranged on the side of the support 2 facing away from the solar cell 3 via side tabs 5.
  • FIG. 3 shows a variant of FIG. 2 in which the cover layer is folded laterally onto itself. This allows a simpler sealing of the carrier and the solar cell with the cover layer.
  • Figures 2 and 3 show, in comparison to Figure 1, a much longer diffusion path for penetrating liquids 10.
  • the liquid to be penetrated must on the one hand overcome the contact between the side flap 5 and the carrier 2 and, on the other hand, the contact of the covering layer 4 with the side of the carrier facing the solar cell in order to reach the solar cell 3.
  • FIG. 4a shows a plan view of the side of the carrier of a module according to the invention facing away from the solar cell before the attachment of the module
  • Corner plate 6 has already been folded over the fold line 9 and is located on the support 2.
  • Figure 4c shows the module after folding the side flaps over the corresponding fold lines.
  • the side edges 8 of the side flaps 5 and the corner flap 6 formed by the recesses 7 are flush with each other on the support in FIG. 4c and are thus in contact with each other. This protects against the ingress of moisture in the region of the side edges between the cover layer and the side of the support facing away from the solar cell.
  • FIGS. 5a and 5b show a preferred embodiment.
  • 5a again shows a plan view of the side of the carrier of a module according to the invention facing away from the solar cell before the attachment of the side straps and the corner straps on the carrier.
  • Figure 5b shows the module after folding the side flaps and the corner flap on the corresponding fold lines. It can also be seen that the side edges of the corner flaps the
  • FIGS. 6a and 6b show a further embodiment. Also, Figure 6a shows side flaps 5 and corner flaps 6 before attaching to the carrier 2. In the recess 7 is an actual section in the cover layer to the fold line 9 of the side, resp. Corner flap, which forms a recess and thus the side edges 8 of the adjacent side and Ecklasche without separating out material from the cover layer.
  • the recess has an angle of 5 ° - 45 °, measured from the fold line of the adjacent side edge measured from and limited by the two adjacent side edges 8, on.
  • Figure 6b shows the module after folding the second side flap on the first and then folding the corner flap thereon. Again, the corresponding side edges are overlapped by the corner flap, in particular along the entire side edge of the side flaps. This in turn leads to the already mentioned in Figure 5c advantage.
  • a further preferred embodiment of the invention is in the
  • Figures 7a and 7b shown.
  • Figure 7a corresponds to Figure 5a after folding the side flaps about the fold line 93.
  • the dashed fold line 91 indicates the arrangement of the fold line of the corner flap 6 used in Figure 5b, while the fold line 92 of the corner flap cuts the fold line 93 of the adjacent side tabs.
  • the fold line of the corner flap intersects the fold line of the side flap at a location 3 to 15 mm away from the point of contact 11 of the side edges 8 of the corresponding side flap 5 and corner flap 6.
  • the distance 12 is therefore, as previously mentioned, preferably 3 - 15 mm.
  • Recess 7 meets the fold lines 9, respectively, where the side edges meet 8 of the corresponding side and Ecklasche, is prone to penetrating liquid.
  • folding lines 9 a may be advantageous that the folding lines 9 a
  • cover layer 4 and the carrier 2 in particular the side flaps 5 and the corner flaps 6 and the side facing away from the solar cell 3 of the carrier 2 may be directly connected to each other.
  • directly connected is meant that no further layer or substance between two
  • an adhesive layer may be, for example, a pressure-sensitive adhesive and / or a hot-melt adhesive. This ensures a good bond and ensures additional protection against the ingress of moisture.
  • Pressure sensitive adhesives and hot melt adhesives are generally known to the person skilled in the art and are described in CD Römpp Chemie Lexikon, Version 1 .0, Georg Thieme Verlag 1995, Stuttgart.
  • such an adhesive is about
  • Adhesives selected from the group consisting of ethylene / vinyl acetate Copolymer (EVA), crosslinkable thermoplastic elastomers based on olefins, acrylate compounds, polyurethane polymers and silane-terminated polymers.
  • EVA ethylene / vinyl acetate Copolymer
  • crosslinkable thermoplastic elastomers based on olefins acrylate compounds
  • polyurethane polymers polyurethane polymers
  • silane-terminated polymers silane-terminated polymers
  • Preferred acrylate compounds are in particular acrylate compounds based on acrylic monomers, in particular of acrylic and methacrylic acid esters.
  • polyurethane polymer encompasses all polymers which are prepared by the so-called diisocyanate-polyaddition process, including those polymers which are almost or completely free of urethane groups.
  • polyurethane polymers are polyether polyurethanes, polyester polyurethanes, Polyether polyureas, polyureas, polyester-polyureas, polyisocyanurates and polycarbodiimides.
  • an adhesive is ethylene / vinyl acetate copolymer
  • the cover layer 4 is a layer of a plastic, which is characterized by a high transmission in the region of the spectrum of common solar cells.
  • the transmission of the material of the cover layer measured at a cover layer thickness of 0.1 mm in a spectrum of 300-1300 nm, more than 85%, in particular more than 90%, particularly preferably more than 93%.
  • Suitable materials for the topcoat are fluoropolymers such as copolymers of ethylene and tetrafluoroethylene, such as that sold by DuPont Corporation under the tradename Tefzel®, or a polyvinylidene fluoride sold by DuPont Corporation under the tradename Tedlar®.
  • Such a cover layer is advantageous in that it protects the solar cell against damage, contamination and penetration of
  • the cover layer typically has a thickness of 0.01-0.1 mm, preferably 0.02-0.05 mm.
  • solar cell as used herein means both a single solar cell unit and a plurality of solar cell units electrically and / or mechanically interconnected with each other Such solar cell units are commercially available from, for example, Clean Venture 21 Japan, Fuji Electric Japan, United Solar Ovonic LLC USA , Helianthos BV, the Netherlands, VHF-Flexcell, Switzerland and Ascent Solar, USA.
  • solar cell unit is understood in this document to mean a semiconductor component which contains a pn junction in which sunlight is converted directly into electrical energy, as it is
  • the support mentioned is typically a flexible support of plastic or metal, preferably one

Landscapes

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

Abstract

L'invention concerne un module (1) comprenant au moins une cellule solaire (3) qui est disposée sur un support (2) et sur laquelle est disposée une couche de revêtement (4) qui présente les couvre-joints latérales (5) et des couvre-joints d'angles (6) qui sont montés mutuellement en contact au dos du support.
EP11728859.7A 2010-07-01 2011-07-01 Couche de revêtement pour cellule solaire Withdrawn EP2589089A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11728859.7A EP2589089A2 (fr) 2010-07-01 2011-07-01 Couche de revêtement pour cellule solaire

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP10168106A EP2403008A1 (fr) 2010-07-01 2010-07-01 Couche de recouvrement pour cellule solaire
PCT/EP2011/061158 WO2012001165A2 (fr) 2010-07-01 2011-07-01 Couche de revêtement pour cellule solaire
EP11728859.7A EP2589089A2 (fr) 2010-07-01 2011-07-01 Couche de revêtement pour cellule solaire

Publications (1)

Publication Number Publication Date
EP2589089A2 true EP2589089A2 (fr) 2013-05-08

Family

ID=43587310

Family Applications (2)

Application Number Title Priority Date Filing Date
EP10168106A Withdrawn EP2403008A1 (fr) 2010-07-01 2010-07-01 Couche de recouvrement pour cellule solaire
EP11728859.7A Withdrawn EP2589089A2 (fr) 2010-07-01 2011-07-01 Couche de revêtement pour cellule solaire

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP10168106A Withdrawn EP2403008A1 (fr) 2010-07-01 2010-07-01 Couche de recouvrement pour cellule solaire

Country Status (6)

Country Link
US (1) US20130118576A1 (fr)
EP (2) EP2403008A1 (fr)
JP (1) JP2013530545A (fr)
KR (1) KR20140009908A (fr)
CN (1) CN102959734A (fr)
WO (1) WO2012001165A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10226197B2 (en) 2014-04-25 2019-03-12 Medtronic, Inc. Pace pulse detector for an implantable medical device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60170270A (ja) * 1984-02-15 1985-09-03 Matsushita Electric Ind Co Ltd 太陽電池素子のパツケ−ジ構成法
DE19733913B4 (de) * 1997-08-05 2004-07-15 Siemens Solar Gmbh Klimastabiles Dünnschicht-Bauelement
JP2003069055A (ja) * 2001-06-13 2003-03-07 Sharp Corp 太陽電池セルとその製造方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2012001165A2 *

Also Published As

Publication number Publication date
CN102959734A (zh) 2013-03-06
WO2012001165A2 (fr) 2012-01-05
WO2012001165A3 (fr) 2012-07-05
KR20140009908A (ko) 2014-01-23
JP2013530545A (ja) 2013-07-25
EP2403008A1 (fr) 2012-01-04
US20130118576A1 (en) 2013-05-16

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