WO2011046483A1 - Procédé d'inclusion de cellules solaires - Google Patents

Procédé d'inclusion de cellules solaires Download PDF

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Publication number
WO2011046483A1
WO2011046483A1 PCT/SE2010/000247 SE2010000247W WO2011046483A1 WO 2011046483 A1 WO2011046483 A1 WO 2011046483A1 SE 2010000247 W SE2010000247 W SE 2010000247W WO 2011046483 A1 WO2011046483 A1 WO 2011046483A1
Authority
WO
WIPO (PCT)
Prior art keywords
glass
outermost edges
solar cells
strip
order
Prior art date
Application number
PCT/SE2010/000247
Other languages
English (en)
Inventor
Lars Eriksson
Erik Maehlum
Original Assignee
Lars Eriksson
Erik Maehlum
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 Lars Eriksson, Erik Maehlum filed Critical Lars Eriksson
Publication of WO2011046483A1 publication Critical patent/WO2011046483A1/fr

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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
    • H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
    • 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
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/048—Encapsulation of modules
    • H01L31/0488—Double glass encapsulation, e.g. photovoltaic cells arranged between front and rear glass sheets
    • 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
    • H01L31/186—Particular post-treatment for the devices, e.g. annealing, impurity gettering, short-circuit elimination, recrystallisation
    • 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 method to enclose solar cells between two glass sheets in different steps, distanced from each other in a distance of about 0,5-2 mm, the outermost edges of said glass sheets including the distance between them are covered by an elongated glass strip or a glass fibre along the outermost edges of said glass sheets around their circumference, whereupon these are heated by a heating source until they have been melted together, so that a hermetically enclosed space is created between the glass sheets, which efficiently keep out moisture from said space having the moisture sensitive solar cells.
  • the seals are aged where organic material is present, which break down the seals and already after some year holes have been detected in the seals and moisture gets in and damages the solar cells, which are much more expensive that the solar panel, whereby the solar cells must be replaced and be mounted in fixed or new solar panels.
  • the solar panels have too large glass distances, when they enclose the solar cells having too large air volume, which expands and contract too much and in this way also help to destroy the seal.
  • the object of the present invention is to eliminate the drawbacks of the above mentioned structures by enclosing the solar cells between at least two glass sheets having a glass distance of 0,5 - 2 mm and sealing its edge area along its circumference with melted glass, by applying a glass strip or a glass fibre and then during said applying heat the same until they are melting together with the glass edges and hermetically enclose a space between the glasses, in which the solar cells in this case lie protected from moisture and mechanical influence during a long period of time without being aged worth mentioning.
  • a method has been provided by which solar cells can be hermetically enclosed in a space surrounded by an inorganic glass material, which makes that a seal which does not age worth mentioning, can be provided in a simple, cheap and non-polluting way.
  • the solar cells have a crystalline form or in the form of a thin film.
  • the solar cells are placed between two glass sheets, which thereafter can be used contained in a solar catcher or as modules on a support, such e.g. a roof where the solar cells are electrically connected to lead current outside the edge area of the module or the solar catcher, in order to be lead further to an electric network.
  • the solar cells areas enclosed between two glass sheets according to a method during which in a first step the solar cells are provided with connecting electrical circuits on a first glass sheet, e.g. by being tampon printed or screen printed or being in the form of a film.
  • a second glass sheet is placed upon the first glass sheet in order to cover the same and being distanced at least along its circumference along around its edge area in a distance from the first glass sheet of about 0,5 - 2 mm by aid of a spacer, e.g. then the glass strip/glass fibre constitute the distance alone.
  • the outermost edges of the first and second glass edges together constitute the legs in an U-formation and the spacer, which creates the distance there between constitutes bottom in said U-formation.
  • the interspace between the glass sheets and the outermost edges around the circumference is covered by an elongated side surface of a glass strip or a glass fibre in a third step, whereupon in a forth step the outermost edges of the glass sheets and the glass strip/glass fibre are heated by a heating source until they are melted together, whereupon a hermetically enclosed space is created between the glass sheets, which effectively keep out moisture from destroying the moisture sensitive solar cells and protects them from mechanical damage.
  • the hermetically enclosed first and second glass sheets are parallel to each other and mainly plane, and hermetically enclosing said solar cells and the electric circuits in order to constitute with these parts a module.
  • a number of modules can in this way function as not being built in for directly absorbing solar energy and resting on a support in order to function as solar catchers.
  • modules can be provided within a number of solar panels connected together e.g. consisting of insulating glass, where the modules are arranged side by side or on top of each other within the insulating glass.
  • the modules are electrically connected to each other via circuits to each other and to the net.
  • the outermost edges and the glass strip or glass fibre can be melted by different types of heating sources.
  • the heating source can be a burning gas flame, which is directed from a gas container, where the gas by a nozzle can be sprayed as a gas flame towards the outermost edges and the glass strip/glass fibre.
  • the heating source can also provide a melting together by aid of laser beams, micro waves or by en electric light bow between electrodes.
  • the heating source heat locally at the outermost edges and the glass strip/glass fibre, which has a diameter/width of about 0,5 - 2 mm, which in this case is somewhat bigger that the distance between the glass sheets in order also to cover the outermost edges, which during the heating melts at about 1 800 degrees C within a locally much limited area containing a small mass at the same time as the energy consumption and also the time to melt said glass material in this local area will be insignificant.
  • the circuits within the space of the module are tampon printed, screen printed or are applied as an electrically conducting metal film on the first or second glass sheet.
  • the circuits extend over the outer edges in order to constitute a contacting point for connecting electrical conduits in these.
  • the conduits continue outside that area where the melting takes place.
  • the outermost edges and the glass strip/glass fibre melt during the heating at the same time as the glass mass is floating and seal around the circuits, which are surrounded and hermetically seal around these in a fifth step.
  • the space remains in this case hermetically enclosed also with the connecting conduits.
  • the gas sprayed through the nozzle is helium which is mixed with oxygen during the fifth step at the same time as said gas is burning and heating the edge area with an uniform speed of about 0,5 - 1 decimetre per second along the circumference, so that the flame does not is heat deeper than about 2 decimetres in a direction inwards to the space, since gas is a bad heat conductor, why the space does not being heated and expands to an over pressure, which otherwise can break the glass sheets.
  • the modules are arranged inside in a solar panel e.g. in the form of an insulating glass on an existing sheet unit, preferably a glass sheet, this is provided on a bed of silicone in the form of many silicone drops, in order to form a soft resting surface for supporting the module.
  • the module which is manufactured to function for a long time and which is the most expensive part in the solar catcher is worth to be moved, in order to save money and this way of handling means that you can replace the cheap parts in the solar catcher and reuse the expensive module.
  • the glass strip is formed as an elongated band, which in its cross section has a width which mainly covers the thickness of the glass sheet and the spacer.
  • the outer surface of the glass band is turned during the method away from the outermost edges of the glass sheets at the same time as the inner surface of the glass band is turned inwards to the space between the glass sheets, where an extension is fitted in, which guides the position of the glass band between the glass sheets and positions the glass band to be centred into a predetermined position between the glass sheets in its longitudinal direction.
  • the first and second glass sheets of the module of chemical or thermally hardened glass which together with the treatment with potassium nitrate on the melted glass material, reinforces the whole module, which then also can stand stresses in the form of movements and shakings which cause pressure tensions and tensile stresses, e.g. in the case that the modules are arranged on a vehicle or on another movable material and in order to avoid that the modules in such a situation shall break and leak in moisture into the space between the glass sheets.
  • a module is provided which is manufactured of an inorganic material which will not be broken down by the time.
  • the expensive solar cells lie well protected and can be used again if the solar panel they are placed in will get broken.
  • the glass distance is small about 0,5 - 2 mm, so that a heating of the space between the glass sheets only gives a small volume increasing and also a small pressure increasing which cannot destroy the seal made of glass.
  • Fig. 1 shows a vertical cross-section through two glass sheets having interjacent solar cells after that the first and second steps have been carried out
  • Fig. 2 shows the same view as in Fig. 1 after that the third step has been carried out
  • Fig. 3 shows the same view as in Fig. 1 after that the forth step has been carried out
  • Fig. 4 shows a part of a module in a vertical cross-section view after that the second and the third steps have been carried out where a glass strip is provided at the outermost edge
  • Fig. 5 shows a vertical cross-section view through a part of a solar panel containing modules supported by a soft bed.
  • solar cells 1 are provided between two glass sheets 2 in a first step when a first glass sheet 5 and a second glass sheet 1 1 has been arrange to cover the first one in a second step, distanced along its circumference 6 and its edge area 4 with a spacer 9 in a distance 7 of about 0,5 - 2 mm from each other.
  • the outermost edges 8 and the distance 7 between the glass sheets 2 of the first and the second glass sheets 5 are covered in the third step by an elongated side surface of a glass fibre 10 placed along the outermost edges 8 around the circumference 6.
  • the outermost glass sheets 8 and the glass fibre 10 have been heated by a heating source until they have been melted together to a seal 22 which has stiffened around a hermetically sealed space 19, where the first and the second glass sheet are in parallel to each other and provided in the distance 7 from each other and plane, containing said solar cells 1 and electric circuits 21 , said mentioned parts together constitute a module 12.
  • the circuits 21 are applied such as an electrically conductive metal film on the first or the second glass sheet 5.
  • the circuits 21 extend to the outermost edges 8 where the melting occurs of the glass fibre 10 around the circuits 21 , in which place a further contacting can take place to connecting circuits 21 or conduits 23 in a contact device present in that place.
  • the glass strip 17 is formed as an elongated band having a width mainly covering the thickness of the first and the second glass sheets 5, 1 1 and the width of the spacer 9.
  • the outer surface 18 of the glass strip 17 comprises an extension 20, which is turned inwards to the space 19 and an outer surface 24, which is turned from the space 19, where it fits and guides the position of the glass strip 17 between the first and the second glass sheets 2 before the melting of the glass strip 17.
  • two modules 12 are provided within a solar catcher 3 designed as a solar panel 13 consisting of an insulating glass 14 in which the modules 12 are provided side by side.
  • the modules 12 are connected electrically to each other via the circuits 21 .
  • the modules 12 are arranged on a soft bed 15 of silicone 16 in order to create a soft resting surface for the modules 12.

Landscapes

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

Abstract

La présente invention concerne un procédé d'inclusion de cellules solaires (1) entre au moins deux plaques, de préférence deux plaques de verre (2) comprises par exemple dans un capteur solaire (3), lesdites cellules solaires (1) pouvant être connectées électriquement afin de distribuer un courant. Dans une première étape, les cellules solaires (1) sont agencées sur une première plaque de verre (5), puis une deuxième plaque de verre (11) est posée sur la première afin de recouvrir la première plaque de verre (5) dans une deuxième étape et d'être écartée, le long de sa périphérie (6) et de sa zone de bord (4), à l'aide d'au moins une entretoise (9), pour créer une distance (7) entre les plaques de verre (5, 11) d'environ 0,5 à 2 mm. Dans une troisième étape, les bords les plus extérieurs (8) des plaques et la distance (7) sont recouverts par au moins une partie d'une face latérale longitudinale d'une bande de verre (17) et/ou d'une fibre de verre (10), ladite surface latérale étant appliquée sur les bords les plus extérieurs (8) à proximité de la périphérie (6). Dans une quatrième étape, au moins les bords les plus extérieurs (8) et la bande de verre (17) ou la fibre de verre (10) sont chauffés par au moins une source de chaleur jusqu'à leur fusion pour former un joint étanche (22) autour d'un espace hermétiquement clos (19), ce qui permet de l'étanchéifier contre l'humidité pendant une longue période de temps.
PCT/SE2010/000247 2009-10-16 2010-10-15 Procédé d'inclusion de cellules solaires WO2011046483A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0901339-2 2009-10-16
SE0901339A SE533459C2 (sv) 2009-10-16 2009-10-16 Förfarande att inkapsla solceller

Publications (1)

Publication Number Publication Date
WO2011046483A1 true WO2011046483A1 (fr) 2011-04-21

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ID=43243877

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Application Number Title Priority Date Filing Date
PCT/SE2010/000247 WO2011046483A1 (fr) 2009-10-16 2010-10-15 Procédé d'inclusion de cellules solaires

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SE (1) SE533459C2 (fr)
WO (1) WO2011046483A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013247238A (ja) * 2012-05-25 2013-12-09 Mitsubishi Electric Corp 太陽電池モジュール
US9257585B2 (en) 2013-08-21 2016-02-09 Siva Power, Inc. Methods of hermetically sealing photovoltaic modules using powder consisting essentially of glass
JP2016152332A (ja) * 2015-02-18 2016-08-22 トヨタ自動車株式会社 太陽電池モジュール
CN111900220A (zh) * 2020-07-27 2020-11-06 泰州隆基乐叶光伏科技有限公司 一种光伏组件层压方法和光伏组件

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000046860A1 (fr) * 1999-02-01 2000-08-10 Kurth Glas + Spiegel Ag Module solaire
US20020046797A1 (en) * 1999-06-10 2002-04-25 The University Of Sydney Glass panel
US20050000561A1 (en) * 2001-10-30 2005-01-06 Guy Baret Photovoltaic cell assembly and the method of producing one such assembly
JP2008115057A (ja) * 2006-11-07 2008-05-22 Electric Power Dev Co Ltd 封止材料、ガラスパネルの製造方法および色素増感太陽電池
US20080302418A1 (en) * 2006-03-18 2008-12-11 Benyamin Buller Elongated Photovoltaic Devices in Casings
WO2009108385A2 (fr) * 2008-02-28 2009-09-03 Epv Solar, Inc. Unité en verre isolant comprenant un dispositif de mini-jonction intégré

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000046860A1 (fr) * 1999-02-01 2000-08-10 Kurth Glas + Spiegel Ag Module solaire
US20020046797A1 (en) * 1999-06-10 2002-04-25 The University Of Sydney Glass panel
US20050000561A1 (en) * 2001-10-30 2005-01-06 Guy Baret Photovoltaic cell assembly and the method of producing one such assembly
US20080302418A1 (en) * 2006-03-18 2008-12-11 Benyamin Buller Elongated Photovoltaic Devices in Casings
JP2008115057A (ja) * 2006-11-07 2008-05-22 Electric Power Dev Co Ltd 封止材料、ガラスパネルの製造方法および色素増感太陽電池
WO2009108385A2 (fr) * 2008-02-28 2009-09-03 Epv Solar, Inc. Unité en verre isolant comprenant un dispositif de mini-jonction intégré

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013247238A (ja) * 2012-05-25 2013-12-09 Mitsubishi Electric Corp 太陽電池モジュール
US9257585B2 (en) 2013-08-21 2016-02-09 Siva Power, Inc. Methods of hermetically sealing photovoltaic modules using powder consisting essentially of glass
US20180175226A1 (en) * 2013-08-21 2018-06-21 Markus Eberhard Beck Methods of hermetically sealing photovoltaic modules
US10236402B2 (en) 2013-08-21 2019-03-19 Siva Power, Inc. Methods of hermetically sealing photovoltaic modules
US10727362B2 (en) 2013-08-21 2020-07-28 First Solar, Inc. Methods of hermetically sealing photovoltaic modules
JP2016152332A (ja) * 2015-02-18 2016-08-22 トヨタ自動車株式会社 太陽電池モジュール
CN111900220A (zh) * 2020-07-27 2020-11-06 泰州隆基乐叶光伏科技有限公司 一种光伏组件层压方法和光伏组件

Also Published As

Publication number Publication date
SE0901339A1 (sv) 2010-10-05
SE533459C2 (sv) 2010-10-05

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