WO2011095304A1 - Windable photovoltaic curtain - Google Patents

Windable photovoltaic curtain Download PDF

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Publication number
WO2011095304A1
WO2011095304A1 PCT/EP2011/000397 EP2011000397W WO2011095304A1 WO 2011095304 A1 WO2011095304 A1 WO 2011095304A1 EP 2011000397 W EP2011000397 W EP 2011000397W WO 2011095304 A1 WO2011095304 A1 WO 2011095304A1
Authority
WO
WIPO (PCT)
Prior art keywords
curtain
windable
fact
modules
cable
Prior art date
Application number
PCT/EP2011/000397
Other languages
French (fr)
Inventor
Massimo Romani
Original Assignee
Kf S.R.L.
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 Kf S.R.L. filed Critical Kf S.R.L.
Publication of WO2011095304A1 publication Critical patent/WO2011095304A1/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F10/00—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins
    • E04F10/02—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins
    • E04F10/06—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building
    • E04F10/0611—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building with articulated arms supporting the movable end of the blind for deployment of the blind
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/68—Operating devices or mechanisms, e.g. with electric drive
    • E06B9/72—Operating devices or mechanisms, e.g. with electric drive comprising an electric motor positioned inside the roller
    • 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
    • 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
    • H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S30/00—Structural details of PV modules other than those related to light conversion
    • H02S30/20—Collapsible or foldable PV modules
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/30—Electrical components
    • H02S40/34—Electrical components comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes
    • 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

  • TITLE WINDABLE PHOTOVOLTAIC CURTAIN
  • the present invention refers to the field of the energy production devices and, particularly, it refers to a method for producing electric energy by harnessing the solar energy by the photovoltaic effect with an amorphous silicon thin film directly embedded inside a plastic fabric (preferably ETFE, ethylene tetra fluoroethylene) of the windable curtain or covering.
  • amorphous silicon thin film directly embedded inside a plastic fabric (preferably ETFE, ethylene tetra fluoroethylene) of the windable curtain or covering.
  • the object of the present invention consists of providing a windable curtain comprising a plurality of flexible thin film modules made of amorphous silicon in a single, or double or triple bonding, embedded in a plastic material thin film, having a high corrosion resistance in a wide range of temperatures; by ultrasonic welding it is possible to associate the edges of the plastic material in order to obtain a wide area of a windable flexible photovoltaic material on a suitable rotating tube which acts as a sun-shading curtain.
  • the advantage consists of obtaining a covering which is used both as a sun-shield and for harnessing the solar energy incident on the curtain for producing electric energy. Said objects and advantages are all met by the windable curtain having a photovoltaic circuit, object of the present invention, which is characterized in the following claims.
  • FIG. 1 shows a windable photovoltaic curtain on a supporting structure, in an unwinded condition
  • FIG. 1A shows a thin amorphous silicon photovoltaic module, embedded between a thin film of plastic materials with side projecting protrusions for the association to adjacent modules;
  • FIG. 2 shows both the outline of the curtain with a driving motor and the cross-section of the winding tube of the curtain with photovoltaic panels;
  • FIG. 4 shows a module junction box
  • FIG. 5 shows, as a whole, the rotating tube housing the positive terminals of the curtain
  • FIG. 7 shows a detail of a cross-section view of the end area of the rotating tube.
  • a windable curtain 1 having a double function as a sun- shield/for producing electric energy by photovoltaic technology
  • a plurality of panels or modules, indicated at 2 of a thin flexible film of photovoltaic amorphous silicon, with a single, double and triple junctions.
  • Said film 2 is embedded between a plastic material thin film, indicated at 3, in this particular case EPFE (ethylene tetra fluoroethylene) .
  • EPFE ethylene tetra fluoroethylene
  • a module or panel has the following dimensions: width 460 mm, length 3399 mm and other models, thickness: 1 mm, weight 1.57 kg and a power of 92 Wp.
  • the final dimensions of the photovoltaic curtain, with reference to the type having 11 panels, are: width 5060 mm and length 3399 mm.
  • the whole peak power of the reference curtain is of 1012 and the efficiency is equal to or greater than 50 W/mq.
  • the curtain is formed by the abovementioned modules 2 assembled one to the other by drawing them close along their major sides: the plastic covering material 3, ETFE in this case, is wider than the photovoltaic module of about 2-2.5 cm per side.
  • the bonding is made with a specific ultrasonic equipment which, by a sonotrode, bonds the two plastic edges 3 which melt in this way one into the other.
  • the melt portion of ' the plastic material is pressed for obtaining the welding of the two panels.
  • the bonded modules or panels form a sheet acting as a windable curtain when the modules are fixed to a suitable supporting structure.
  • the structure On the inside, the structure is provided with an electric motor for winding and extending the curtain.
  • Each module, or strip, of silicon is provided, at the ends, with two corresponding junction boxes, one for the positive pole and the other for the negative pole; the junction boxes are housed inside the curtain supporting structure.
  • the positive pole of the modules/panels faces the supporting structure ("inner” portion) and can disappear inside a corresponding rotating tube, while the negative pole faces the "outer” portion of the photovoltaic curtain.
  • the assembled modules are parallelly connected; the cable connecting the positive poles (inner portion) is integral with the opening and closing movements of the curtain, in order to avoid tears and failures of the cable itself; the other side of the cable is instead fixed to the "outer" portion of the stationary structure, then it is connected to an outer inverter.
  • Another illustrative connection variant of a model different from the one used as an example consists of two positive and negative poles which exit from the same side of the photovoltaic curtain to be parallelly or serially connected.
  • a rotating connector always in contact, enables to wind the curtain (because its positive cable moves/rotates upon each opening/closure) and its connection to the cable of the outer inverter, which is always stationary or in an helicoidal gathering system which automatically unwinds or winds the cable by allowing the output outer connector to remain stationary.
  • the negative pole is located, as said before, in the "outer" portion of the curtain; the cable having a negative polarity is taken towards the upper portion of the curtain, by following the path of the support arms of the curtain, by a suitable cable.
  • the inverters are of the 1 k and 2 kW type, for matching the characteristics of the thin film panel and the different dimensions of the curtain.

Landscapes

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

Abstract

It is an object of the present invention a windable curtain (1) for a photovoltaic use, comprising a plurality of modules (2) made of a flexible thin film of amorphous silicon, having a single, double and triple bonding; each amorphous silicon module is embedded in a thin film (3) of plastic material; said plurality of modules (2) are bonded by ultrasonic welding, with a sonotrode adapted to melt and bond the two plastic edges which will be overlapped, the thermoplastic material being wider than the amorphous silicon thin film. The modules (2) are bonded to each other by plastic covering materials and along the major side, said plastic material is ETFE (ethylene tetra fluoroethylene). Each silicon module is provided at its ends of a corresponding junction box to connect the terminals exiting the photovoltaic modules and parallelly connect to each other the several modules; a junction box connects the positive terminal, located on the stationary portion of the curtain, while the other junction box connects the negative terminal, located on the movable portion of the curtain.

Description

TITLE: WINDABLE PHOTOVOLTAIC CURTAIN
DE S CRI PT ION
FIELD OF THE INVENTION
The present invention refers to the field of the energy production devices and, particularly, it refers to a method for producing electric energy by harnessing the solar energy by the photovoltaic effect with an amorphous silicon thin film directly embedded inside a plastic fabric (preferably ETFE, ethylene tetra fluoroethylene) of the windable curtain or covering.
More speci ically, the object of the present invention consists of providing a windable curtain comprising a plurality of flexible thin film modules made of amorphous silicon in a single, or double or triple bonding, embedded in a plastic material thin film, having a high corrosion resistance in a wide range of temperatures; by ultrasonic welding it is possible to associate the edges of the plastic material in order to obtain a wide area of a windable flexible photovoltaic material on a suitable rotating tube which acts as a sun-shading curtain.
Therefore, the advantage consists of obtaining a covering which is used both as a sun-shield and for harnessing the solar energy incident on the curtain for producing electric energy. Said objects and advantages are all met by the windable curtain having a photovoltaic circuit, object of the present invention, which is characterized in the following claims.
BRIEF DESCRIPTION OF THE FIGURES
This and other characteristics will be better understood from the following description of some embodiments shown in an illustrative non limiting way, in the attached drawings :
- Figure 1 shows a windable photovoltaic curtain on a supporting structure, in an unwinded condition;
- Figure 1A shows a thin amorphous silicon photovoltaic module, embedded between a thin film of plastic materials with side projecting protrusions for the association to adjacent modules;
- Figure 2 shows both the outline of the curtain with a driving motor and the cross-section of the winding tube of the curtain with photovoltaic panels;
- Figure 3 shows the connections of the positive and negative poles to the inverter;
- Figure 4 shows a module junction box;
- Figure 5 shows, as a whole, the rotating tube housing the positive terminals of the curtain;
- Figure 6 shows a detail of the end area of the tube;
- Figure 7 shows a detail of a cross-section view of the end area of the rotating tube.
DESCRIPTION OF THE INVENTION
As is it shown in Figures 1 and 1A, for manufacturing a windable curtain 1 having a double function: as a sun- shield/for producing electric energy by photovoltaic technology, it is used, as it will be explained in the following, a plurality of panels or modules, indicated at 2, of a thin flexible film of photovoltaic amorphous silicon, with a single, double and triple junctions. Said film 2 is embedded between a plastic material thin film, indicated at 3, in this particular case EPFE (ethylene tetra fluoroethylene) .
For example, a module or panel has the following dimensions: width 460 mm, length 3399 mm and other models, thickness: 1 mm, weight 1.57 kg and a power of 92 Wp. The final dimensions of the photovoltaic curtain, with reference to the type having 11 panels, are: width 5060 mm and length 3399 mm.
The whole peak power of the reference curtain is of 1012 and the efficiency is equal to or greater than 50 W/mq.
The curtain is formed by the abovementioned modules 2 assembled one to the other by drawing them close along their major sides: the plastic covering material 3, ETFE in this case, is wider than the photovoltaic module of about 2-2.5 cm per side.
It is pointed out that said silicon modules 2 are integrated in the plastic material fabric 3.
The bonding is made with a specific ultrasonic equipment which, by a sonotrode, bonds the two plastic edges 3 which melt in this way one into the other.
Indeed, during the welding, the melt portion of' the plastic material is pressed for obtaining the welding of the two panels.
The bonded modules or panels form a sheet acting as a windable curtain when the modules are fixed to a suitable supporting structure.
On the inside, the structure is provided with an electric motor for winding and extending the curtain. Each module, or strip, of silicon is provided, at the ends, with two corresponding junction boxes, one for the positive pole and the other for the negative pole; the junction boxes are housed inside the curtain supporting structure.
Specifically, the positive pole of the modules/panels faces the supporting structure ("inner" portion) and can disappear inside a corresponding rotating tube, while the negative pole faces the "outer" portion of the photovoltaic curtain.
The assembled modules are parallelly connected; the cable connecting the positive poles (inner portion) is integral with the opening and closing movements of the curtain, in order to avoid tears and failures of the cable itself; the other side of the cable is instead fixed to the "outer" portion of the stationary structure, then it is connected to an outer inverter. Another illustrative connection variant of a model different from the one used as an example, consists of two positive and negative poles which exit from the same side of the photovoltaic curtain to be parallelly or serially connected.
A rotating connector, always in contact, enables to wind the curtain (because its positive cable moves/rotates upon each opening/closure) and its connection to the cable of the outer inverter, which is always stationary or in an helicoidal gathering system which automatically unwinds or winds the cable by allowing the output outer connector to remain stationary.
The negative pole is located, as said before, in the "outer" portion of the curtain; the cable having a negative polarity is taken towards the upper portion of the curtain, by following the path of the support arms of the curtain, by a suitable cable.
The inverters are of the 1 k and 2 kW type, for matching the characteristics of the thin film panel and the different dimensions of the curtain.
It is moreover provided a decoupling transformer for eliminating the eddy currents generated by the use of the amorphous thin film.

Claims

1. indable curtain (1) for a photovoltaic use, characterized by the fact it comprises a plurality of modules (2) made of a flexible, thin film of amorphous silicon, having a single, double and triple bonding; each amorphous silicon module is embedded in a thin film (3) of plastic material; said plurality of modules (2) are bonded by ultrasonic welding, by a sonotrode adapted to bond two plastic edges which melt together, the thermoplastic material being wider than the amorphous silicon thin film.
2. Windable curtain (1) according to claim 1, characterized by the fact said modules (2) are bonded to each other by covering plastic materials and along the major side.
3. Windable curtain (1) according to claim 2, characterized by the fact said plastic material is ETFE, ethylene tetra fluoroethylene .
4. Windable curtain (1) according to claim 1, characterized by the fact each silicon module (2) is provided, at its ends, with a corresponding junction box, to connect the terminals exiting the photovoltaic modules and parallelly connect to each other the different modules; a junction box connects the positive terminal, located on the fixed portion of the curtain, while the other junction box connects the negative terminal, located on the movable portion of the curtain.
5. Windable curtain (1) according to claim 4, characterized by the fact said positive pole of the module (2) faces the supporting structure, "inner" portion, and disappears inside a corresponding rotating tube, while the negative pole is located in the "outer" portion of the curtain and its cable is taken towards the upper portion of the curtain, following the path of the curtain support arms.
6. Windable curtain (1) according to claim 4, characterized by the fact the cable connecting the positive poles is integral with the opening and closing movements of the curtain, in order to avoid tears or failures of the cable itself.
7. Windable curtain (1) according to claim 4, characterized by the fact the cable of the negative pole is fixed to the "outer" portion of the structure which is stationary, then it is connected to the outer inverter.
8. Windable curtain (1) according to claim 4, characterized by the fact it comprises a rotating connector, always in contact, for enabling the windability of the curtain, by its moving/rotating positive cable upon each opening/closure and its connection to the outer inverter cable, which is instead always stationary or in a gathering helicoidal system which unwinds or winds automatically the cable, by allowing the output outer connector to remain stationary.
9. Windable curtain (1) according to claim 1, characterized by the fact said silicon module (2) is an integral portion of the plastic fabric.
10. Windable curtain (1) according to claims 1 and 2, characterized by the fact each silicon module (2) comprises positive and negative poles exiting the same side of the photovoltaic curtain for a serial or parallel connection, both on the side of the supporting structure of the curtain and on the movable/extendeable side .
PCT/EP2011/000397 2010-02-02 2011-01-28 Windable photovoltaic curtain WO2011095304A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMO2010A000019 2010-02-02
IT000019A ITMO20100019A1 (en) 2010-02-02 2010-02-02 ROLLABLE PHOTOVOLTAIC CURTAIN

Publications (1)

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WO2011095304A1 true WO2011095304A1 (en) 2011-08-11

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9318463B2 (en) 2013-05-13 2016-04-19 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method for producing a photovoltaic module
ES2933626A1 (en) * 2021-05-19 2023-02-10 Janez Garcia Javier FLEXIBLE PHOTOVOLTAIC AWNING (Machine-translation by Google Translate, not legally binding)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003032403A1 (en) * 2001-10-10 2003-04-17 Ecosol Technologies, Ltd. A photovoltaic strip assembly
US20030196828A1 (en) * 1996-04-03 2003-10-23 Tom Schilson Flat cable and modular rotary anvil to make same
US20070277867A1 (en) * 2006-05-30 2007-12-06 Heidenreich David C Photovoltaic awning structures
EP2159848A1 (en) * 2008-08-29 2010-03-03 Dickson Constant Roll-up photovoltaic composite and solar-protection device comprising such a composite

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030196828A1 (en) * 1996-04-03 2003-10-23 Tom Schilson Flat cable and modular rotary anvil to make same
WO2003032403A1 (en) * 2001-10-10 2003-04-17 Ecosol Technologies, Ltd. A photovoltaic strip assembly
US20070277867A1 (en) * 2006-05-30 2007-12-06 Heidenreich David C Photovoltaic awning structures
EP2159848A1 (en) * 2008-08-29 2010-03-03 Dickson Constant Roll-up photovoltaic composite and solar-protection device comprising such a composite

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9318463B2 (en) 2013-05-13 2016-04-19 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method for producing a photovoltaic module
ES2933626A1 (en) * 2021-05-19 2023-02-10 Janez Garcia Javier FLEXIBLE PHOTOVOLTAIC AWNING (Machine-translation by Google Translate, not legally binding)

Also Published As

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