SE1551254A1 - Solar cell module - Google Patents

Solar cell module Download PDF

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Publication number
SE1551254A1
SE1551254A1 SE1551254A SE1551254A SE1551254A1 SE 1551254 A1 SE1551254 A1 SE 1551254A1 SE 1551254 A SE1551254 A SE 1551254A SE 1551254 A SE1551254 A SE 1551254A SE 1551254 A1 SE1551254 A1 SE 1551254A1
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SE
Sweden
Prior art keywords
solar cell
cell module
frame
section
support layer
Prior art date
Application number
SE1551254A
Other languages
Swedish (sv)
Other versions
SE540502C2 (en
Inventor
Svensson Anna
Klingberg Sara
Original Assignee
Soltech Energy Sweden Ab
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 Soltech Energy Sweden Ab filed Critical Soltech Energy Sweden Ab
Priority to SE1551254A priority Critical patent/SE540502C2/en
Priority to CN201680056914.7A priority patent/CN108139114A/en
Priority to EP16852181.3A priority patent/EP3356748A4/en
Priority to PCT/SE2016/050918 priority patent/WO2017058084A1/en
Publication of SE1551254A1 publication Critical patent/SE1551254A1/en
Publication of SE540502C2 publication Critical patent/SE540502C2/en
Priority to HK18115298.7A priority patent/HK1256198A1/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S25/00Arrangement of stationary mountings or supports for solar heat collector modules
    • F24S25/20Peripheral frames for modules
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S25/00Arrangement of stationary mountings or supports for solar heat collector modules
    • F24S25/40Arrangement of stationary mountings or supports for solar heat collector modules using plate-like mounting elements, e.g. profiled or corrugated plates; Plate-like module frames 
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00Semiconductor 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
    • H01L31/04Semiconductor 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
    • H01L31/042PV modules or arrays of single PV cells
    • H01L31/048Encapsulation of modules
    • H01L31/049Protective back sheets
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02SGENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S20/00Supporting structures for PV modules
    • H02S20/20Supporting structures directly fixed to an immovable object
    • H02S20/22Supporting structures directly fixed to an immovable object specially adapted for buildings
    • H02S20/23Supporting structures directly fixed to an immovable object specially adapted for buildings specially adapted for roof structures
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02SGENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S20/00Supporting structures for PV modules
    • H02S20/20Supporting structures directly fixed to an immovable object
    • H02S20/22Supporting structures directly fixed to an immovable object specially adapted for buildings
    • H02S20/26Building materials integrated with PV modules, e.g. façade elements
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/10Photovoltaic [PV]
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/20Solar thermal
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers
    • Y02E10/47Mountings or tracking
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
  • Photovoltaic Devices (AREA)

Abstract

The invention relätes to a solar cell module, comprising a frame (12) with an upper elongated section (14), a lower elongated section (16), a first elongated side section (18') and a second elongated side section (18"); a first support layer (20) arranged in connection to the frame (12) and a solar cell layer (24) arranged on the first support layer (20), wherein the frame (12) surrounds the first support layer (20) and the solar cell layer (24) peripherally and wherein the first support layer (20) comprises at least one channel (25).(Fig. 1)

Description

Solar cell module TECHNICAL FIELD The present invention relates to a solar cell module according to the preamble of claim 1.
BACKGROUND Selar cell medules er pneteveltalc cell medeles are cemmenly used lercenverting the energy el lignt inte electricity. A solar cell medule cemerlses aplerallty el selar cells connected ln series. lylultiele medeles may eeintercennected ln erder te term an array el solar cell medules er tlley may beused lrldlvldtially. Selar cell rnedules may ce ground nteented er reel er »vallmetinted. Reef rnetlrlted selar cell module-s may be arrangecl either en tee eltlle reel er integrated wltn the reel. lt is lrneertant tnat an lntegrated selar cellmedtile llave enelign structural strength te resist laetll ler example snew leadand the weight el an adult. lt ls alse lmeertant that an integrated selar cell module meets the same reduirentents ler yvater rurlell as a nermal reel.
Selar cell medtiles meunted en reels er walls may use walenbased crystallinesilicene cells wnlcll nave- a nign strength. llewexfer, such selar cell rnecleles arerelatively heavy and may tnereey ee dllilcult te meunt en a reel. lt is tnereleredesiraele te achieve a lightweight selar cell medele suitable ler lrltegratien wltna reel construction, tfifnicn nas eneligll structural strength and desired efficiency.
SUMMARY OF THE INVENTION An object of the present invention is to achieve a solar cell module which islightweight and which facilitates mounting of the solar cell module.
Another object of the invention is to achieve a solar cell module which facilitates manufacture of the solar cell module.
A further object of the invention is to achieve a solar cell module with optimizedefficiency.
A further object of the invention is to achieve a solar cell module which issuitable for integration with a roof or wall construction.
The herein mentioned objects are achieved by a solar cell module according tothe herein disclosed independent claim.
According to an aspect of the present invention a solar cell module is provided,comprising a frame with an upper elongated section, a lower elongated section,a first elongated side section and a second elongated side section; a firstsupport layer arranged in connection to the frame and a solar cell layerarranged on top of the first support layer, wherein the frame surrounds the firstsupport layer and the solar cell layer peripherally and wherein the first supportlayer comprises at least one channel. The first support layer suitably comprisesa plurality of channels. The at least one channel may extend substantiallyperpendicularly to the longitudinal extension of the upper section and the lowersection of the frame. Alternatively, the at least one channel extends with anangle to the longitudinal extension of the upper section and the lower sectionof the frame. Where the first support layer comprises a plurality of channels thechannels suitably extend in parallel with each other. The at least one channelmay be formed as a groove, slot or similar. The first support layer suitablycomprises a plurality of plastic channels. The first support layer may comprisemultiwall plastic sheets. The first support layer may alternatively comprisemolded plastic channels. The first support layer may comprise a plurality ofseparate parts with channels. By arranging the solar cell layer on top of a layercomprising plastic channels, such as a multiwall plastic sheet, the solar cellmodule achieves enough structural strength to resist both show Eoad and the weight of an aduit. The first support iayer thus enabies the use of thin~film solarcelis which have lower structural strength than the commoniy knovirn crystalläiiesšiicone cells. The support layer cornprisirig at least one channel also results ina lightvveight solar cell module, which facilitates mounting of the solar cell module on a roof or wall construction.
The solar cell module is suitably adapted to be mounted on a roof constructionor a wall construction. lt is therefore to be understood that rooftiles, roofing feltand similar expressions mentioned herein applies for both roof constructions and wall constructions.
A second support layer may be arranged underneath the first support layer.The second support layer preferably comprises at least one channel. Thesecond support layer may comprise a plurality of channels extendingsubstantially perpendicularly to the longitudinal extension of the upper sectionand the lower section of the frame. The second support layer suitablycomprises a multiwall plastic sheet. This way, the structural strength of the solar cell module is increased while minimizing the weight of the solar cell module. The first support layer is suitably thicker than the second support layer. ln the case where the first support layer and/or the second support layercomprise multiwall plastic sheets, the multiwall plastic sheets may have anyprofile, for example rectangular, honeycomb, latticework or similar. The cross-section of the channels of the first support layer and/or the second supportlayer may have any shape.
The solar cell layer preferably comprises a thin-film solar cell. The thin-filmsolar cell layer suitably comprises a thin film of photovoltaic material on a glasssubstrate. Alternatively, the thin film of photovoltaic material is sandwichedbetween two glass substrates. The glass substrate suitably consists of heat-treated or tempered glass. This way, roof tiles may overlap the solar cellmodule without damaging the solar cell layer. The solar cell layer is preferablya rigid thin-film solar cell layer. The thin-film solar cell may comprise cadmium telluride or any other type of solar cells. By using a thin-film solar cell thethickness of the solar cell module is minimized which makes the solar cellmodule suitable for integration with a roof or wall construction. The at least onechannel of the first support layer render the first support layer flexible. The firstsupport layer eemprlslrlg channels vvlll thus provide a danlelng function whenthe selar cell rtledule ls subleeted te leads. This way the thlrl~fllm solar celllayer can rrlove and the risk that the solar cell layer eracks or breaks underlead ls rninirnized. Alternatlvely, the selar cell layer comprises eryetalllne slllcen.
According to an aspect of the invention the solar cell module is adapted toconstitute an integrated part of a roof or wall construction. This means that thesolar cell module is adapted to be arranged flush with neighbouring rooftilesand thus constitute a part of the roof or the wall. The solar cell module is thusadapted to replace one or more roof tiles on a roof or wall construction. Byusing a thin-film solar cell the solar cell module is particularly suitable forintegration with a roof or wall construction. Furthermore, the first side sectionand the second side section of the frame each suitably comprises a retentionportion adapted to engage with a neighbouring roof tile. The first side sectionof the frame suitably comprises a retention portion adapted to engage with aright side of a roof tile. The second side section of the frame suitablycomprises a retention portion adapted to engage with a left side of a roof tile.The retention portions of the respective side section are thus adapted to holdthe solar cell module in place when being integrated with a roof or wallconstruction. This way, the solar cell module is retained in place by interactionwith neighbouring rooftiles. The solar cell module is essentially flat and is thussuitable for engagement with essentially flat roof tiles. However, the retentionportions of the solar cell module may be adapted to engage with any type ofroof tile. The first side section of the frame suitably may comprise a lowerretention portion which is adapted to engage with an upper part of the rightside of a roof tile. The first side section thus comprises a retention portionwhich is adapted to be arranged underneath a neighbouring rooftile. The second side section of the frame suitably may comprise an upper retentionportion which is adapted to engage with a lower part of the left side of a rooftile. The second side section thus comprises a retention portion which isadapted to be arranged on top of a neighbouring roof tile.
The solar cell module suitably comprises a front side and a back side. Thefront side is suitably facing outwards, towards the sun. The back side issuitably facing inwards, away from the sun. The back side is suitably facing thebattens and the roofing felt of a roof or wall construction. The solar cell layer isthus arranged on the front side and the first support layer is arranged on theback side.
According to an aspect of the invention the frame comprises at least oneopening in fluid connection with the at least one channel of the first supportlayer. Suitably, the frame comprises at least two openings in fluid connectionwith the at least one channel of the first support layer. According to an aspectof the invention the frame comprises a plurality of openings in fluid connectionwith the channels of the first support layer. The upper section of the framesuitably comprises at least one opening in fluid connection with the at leastone channel of the first support layer. Suitably, the upper section of the framecomprises a plurality of openings in fluid connection with the channels of thefirst support layer. The lower section of the frame suitably comprises at leastone opening in fluid connection with the at least one channel of the firstsupport layer. Suitably, the lower section of the frame comprises a plurality ofopenings in fluid connection with the channels of the first support layer. lt iscommon knowledge that the efficiency of solar cells decrease when thetemperature increases. lt is therefore desirable to be able to cool the solar cellmodule. By arranging openings in fluid connection with the channels of the firstsupport layer, air is able to flow through the solar cell module. Since the solarcell layer is arranged in contact with the first support layer the solar cell layer iscooled by the air flowing through the channels. A solar cell module withimproved efficiency is thereby achieved. Each channel of the first support layer suitably extends between an opening in the upper section of the frame and anopening in the lower section of the frame. The channels of the first supportlayer are thus adapted for cooling of the solar cell layer.
The upper section of the frame may further comprise attachment holes forattachment of the solar cell module to an underlying batten by means offasteners.
The frame of the solar cell module is preferably essentially rectangular, wherethe upper section and the lower section are longer than the first and thesecond side section. The upper section and the lower section of the frame thusdefine the length of the solar cell module whereas the first and the second sidesection define the height of the solar cell module. The upper section and thelower section of the frame are arranged in parallel opposite each other and thefirst side section and the second side section are arranged in parallel oppositeeach other. The frame, and thus the solar cell module, suitably has the samesize (length and height) as a plurality of adjacently arranged roof tiles. The solar cell module may have the size of one or more roof tiles arranged next to each other. This way, roof tiles may easily be replaced by the solar cell module.
The frame preferably comprises metal, such as steel, aluminium or similar. Theframe may alternatively comprise a plastic material. The frame may furthercomprise a surface coating or similar for protection against corrosion. Theupper section, the lower section, and the side sections are suitably adapted tomechanically hold the first support layer, the optional second support layer andthe solar cell layer. The upper section, the lower section, the first side sectionand the second side section of the frame may comprise bent sheet metal,extruded metal or extruded plastic. Alternatively, the frame sections aremolded as separate pieces which are mechanically attached to each other, orthe frame sections are molded as one piece. For example, the frame may be asolid plastic frame where the upper section, the lower section, the first sidesection and the second side section are molded as one piece. The frame may alternatively be a solid frame molded in one piece comprising the uppersection, the lower section, the first side section, the second side section and aback section. The back section may be the first support layer or the secondsupport layer integrated with the frame. By using a frame which is adapted tomechanically hold the various layers the manufacturing of the solar cell moduleis facilitated. The manufacturing is less time consuming and thus more cost-efficient. By using a metal frame to mechanically hold the different layers in place, vibrations between the different parts of the solar cell module may occur.
Vibrations between the glass of the solar cell layer and the metal framesections may cause undesired noise. However, since the support layers of thesolar cell module comprise channels and thereby provide a damping function,the vibrations between the solar cell layer and the frame are minimized.Alternatively, silicone or similar may be applied between the metal frame andthe solar cell layer in order to achieve a damping function. The occurrence ofundesired noise is thereby minimized. Also, the support layer comprisingplastic channels is flexible which enables the use of press fit between thesupport layer and the metal frame. The frame sections are suitably connectedby rivets, particularly blind rivets. Alternatively, the frame sections areconnected by screw joints. This way, the frame sections are mechanicallyconnected to each other and recycling of worn out solar cell modules isfacilitated. The rivets/screw joints may also act as spacers holding the different layers in place.
At least one support member may be arranged between the upper section andthe lower section of the frame in order to retain the shape of the frame. The atleast one support member thus extends between the upper section and thelower section of the frame, substantially perpendicularly to the longitudinalextension of the upper section and the lower section of the frame. The supportmember is suitably attached to the upper section and the lower section byrivets. The support member may be arranged on the back side of the solar cell module.
The frame preferably comprises at least one hanging portion. The at least onehanging portion may be arranged on the upper section of the frame. Thehanging portion may be a protruding portion on the back side of the uppersection. Alternatively, the first side section and the second side section of theframe each comprise a hanging portion. The hanging portions may bearranged at the upper end of the respective side section, adjacent the uppersection of the frame. Each hanging portion suitably comprises an upper portionprotruding perpendicularly to the longitudinal extension of the respective sidesection. The protruding upper portions are on the back side of the solar cellmodule and are adapted for hanging the solar cell module on a batten. Theprotruding upper portions are thus adapted to abut an edge of a batten. Whenthe solar cell module is integrated in a roof or wall construction the hangingportion is used to hang the solar cell module on a batten whereby the firstsupport layer rests on the batten. The lower section of the solar cell modulerests on roof tiles arranged below the solar cell module. The first support layerand the lower section of the frame thereby abut roof tiles arranged below thesolar cell module. The first support layer is thus a load carrying layer.
According to an aspect of the invention the solar cell module comprises aconnection box for electronics. The connection box may be arranged adjacentthe first support layer underneath the solar cell layer. The connection box maybe arranged adjacent the first side section or the second side section of theframe, adjacent the first support layer. Alternatively, the first support layercomprises two separate parts arranged in parallel, wherein the connection boxis arranged between the two parts. Alternatively, the connection box isarranged in an opening in the first support layer. By arranging the connectionbox coplanar with the first support layer wires from the connection box areaccessible on the back side of the solar cell module. This way, the solar cellmodule may easily be connected to other solar cell modules. The connectionbox may alternatively be arranged coplanar with the solar cell layer, forexample between the first support layer and the upper section of the frame. ln the case where a second support layer is arranged on the back side of theframe the second support layer is suitably shorter than the first support layerand shorter than the longitudinal extension of the side sections of the frame.The second support layer is preferably held by the lower section of the frame,the first side section and the second side section. The second support layer isthus not held by the upper section of the frame. The upper part of the secondsupport layer may alternatively be adhered to the back side of the first supportlayer. The first support layer thus extends beyond the second support layer indirection towards the upper section of the frame. This means that when thesolar cell module is integrated in a roof construction the first support layer stillabuts the batten and is thus the load carrying layer. The second support layerfunctioning as a back layer suitably supports the first support layer and theconnection box. By having a shorter second support layer, wires from theconnection box are still easily accessible on the back side of the solar cell module.
The upper section of the frame preferably comprises a first elongated portionon the front side of the solar cell module, a second elongated portion on theback side of the solar cell module arranged in parallel with the first portion, andan upper end portion connecting the first and the second elongated portion.The upper section of the frame thus suitably comprises a first elongatedportion abutting the solar cell layer on the front side of the solar cell moduleand a second elongated portion abutting the back side of the first support layeron the back side of the solar cell module. The first portion partly overlaps thesolar cell layer on the front side of the solar cell module and holds the solar celllayer in place. The second portion partly covers the first support layer on theback side of the solar cell module. When the solar cell module is integrated ina roof or wall construction, roof tiles or similar might overlap the upper part ofthe front side of the solar cell module. The first portion of the upper section ofthe frame may thereby be configured such that only the upper section of theframe is overlapped and not the uncovered solar cell layer. The upper sectionof the frame further comprises side portions adapted to be connected to the side sections. The cooling openings arranged in fluid connection with thechannels of the first support layer are suitably arranged on the upper endportion. The lower section of the frame suitably comprises a U-section with twoparallel portions and a lower end portion connecting the two parallel portions.The cooling openings arranged in fluid connection with the channels of the firstsupport layer are suitably arranged on the lower end portion of the lowersection of the frame.
The first side section and the second side section of the frame preferably eachcomprises a drainage portion. The drainage portion is adapted to lead waterfrom the underlying roofing felt. The drainage portions of the first side sectionand the second side section respectively suitably comprises a drainagechannel, through which water may be lead away from the solar cell module.The drainage portions are arranged on the back side of the solar cell module.The drainage portions may each comprise a bent/curved portion forming thedrainage channel. The drainage portion of the first side section suitablycomprises a drainage channel formed underneath the retention portion of thefirst side section. The drainage portion of the second side section suitablycomprises a drainage channel formed underneath the first support layer. Thelower section of the frame preferably comprises at least one drainage openingarranged in fluid connection with each drainage channel. This way, the water islead away from the solar cell module.
Further objects, advantages and novel features of the present invention willbecome apparent to one skilled in the art from the following details, and alsoby putting the invention into practice. Whereas the invention is describedbelow, it should be noted that it is not restricted to the specific detailsdescribed. Specialists having access to the teachings herein will recognisefurther applications, modifications and incorporations within other fields, whichare within the scope of the invention. 11 BRIEF DESCRIPTION OF THE DRAWINGS For fuller understanding of the present invention and further objects and advantages of it, the detailed description set out below should be read together with the accompanying drawings, in which the same reference notations denote similar items in the various diagrams, and in which: Figure 1 Figure 2 Figure 3a Figure 3b Figure 3c Figure 3d Figure 3e Figure 4 schematically illustrates a roof construction comprising a solar cellmodule according to an embodiment of the invention;schematically illustrates a frame of a solar cell module accordingto an embodiment of the invention; schematically illustrates a cross-section of a solar cell moduleaccording to an embodiment of the invention; schematically illustrates a cross-section of a solar cell moduleaccording to an embodiment of the invention; schematically illustrates cross-sections of a solar cell moduleaccording to an embodiment of the invention; schematically illustrates an upper section of a frame of a solar cellmodule according to an embodiment of the invention;schematically illustrates an upper section of a frame of a solar cellmodule according to an embodiment of the invention;schematically illustrates the back side of a solar cell moduleaccording to an embodiment of the invention; Figure 5a-b schematically illustrates a second side section of a solar cell module according to an embodiment of the invention; and Figure 6a-b schematically illustrates a first side section of a solar cell module according to an embodiment of the invention. 12 DETAILED DESCRIPTION OF THE DRAWINGS Figure i schernaticaliy shows a roof construction i conwpršsšng a soiar ceilmodule 10 according to an ernbodârnent of the inventâoii. The roof constructioni may be a waii construction 1. The solar ceil rnoduie 10 constitutes anintegrated part of the roof construction i and is arranged on battens 2arranged in parailei. The figure shovifs the soiar call nioduie i0 in engagenfientwith a rooi tile 4 on the right side. Another rooi tiie 4 is arranged beiow thesolar ceii module 10 in order to iiiustrate noyv the soiar cell moduie 10 ovariapsthe tippar and oi the rooi 'sites 4 arranged heiow the solar ceil nwoduie it).instead of a roof tiie 4 arranged beioyv the solar ceii module 10, there niight beanother soiar ceil nwoduie. The soiar cell nwoduie it) comprises a frame 12 withan upper elongated section 14, a lower elongated section 16, a first elongatedside section 18' and a second elongated side section 18"; a first support layer20 (not shown) arranged inside the frame 12 forming a back layer and a solarcell layer 24 arranged on top of the first support layer 20, wherein the frame 12surrounds the first support layer 20 and the solar cell layer 24 peripherally. Thefirst support layer 20 comprises at least one channel (not shown). The firstsupport layer 20 preferably comprises a plurality of channels. The channelssuitably extend substantially perpendicularly to the longitudinal extension ofthe upper section 14 and the lower section 16 of the frame 12. The firstsupport layer 20 may comprise a multiwall plastic sheet with channels. The firstsupport layer 20 may alternatively comprise moulded plastic channels. The firstsupport layer 20 suitably comprises an arbitrary number of channels. Thechannels are illustrated in Figure 3c. The solar cell layer 24 may comprise athin-film solar cell. A second support layer 22 may be arranged underneath thefirst support layer 20 and thus forming a back layer. The second support layer22 may comprise channels extending perpendicularly to the longitudinalextension of the upper section 14 and the lower section 16 of the frame 12.
The solar cell module 10 comprises a front side 26 and a back side 28. Thefront side 26 is facing outwards, towards the sun and the back side 28 is facing 13 inwards, away from the sun. The back side 28 is thus facing the battens 2 andthe roofing felt of the roof construction 1.
The frame 12 of the solar cell module 10 is essentially rectangular. The uppersection 14 and the lower section 16 of the frame 12 thus define the length ofthe solar cell module 10 whereas the first and the second side section 18', 18"define the height of the solar cell module 10. The first side section 18' may beon the left side of the solar cell module 10 and the second side section 18"may be on the right side of the solar cell module 10, when the solar cellmodule 10 is arranged for use. The frame 12, and thus the solar cell module10, may have the size of one or more roof tiles 4 arranged next to each other.
The frame 12 preferably comprises metal, such as steel, aluminium or similar.The frame 12 may alternatively comprise a plastic material. The upper section14, the lower 16 section, and the side sections 18', 18"are suitably adapted tomechanically hold the first support layer 20, the optional second support layer22 and the solar cell layer 24. The upper section 14, the lower section 16, thefirst side section 18' and the second side section 18" of the frame 12 maycomprise bent sheet metal, extruded metal or extruded plastic. The framesections 14, 16, 18', 18" are suitably connected by rivets, particularly blindrivets. Alternatively, the frame sections 14, 16, 18', 18" are connected byscrewjoints. This way, the frame sections 14, 16, 18', 18" are mechanicallyconnected to each other and recycling of worn out solar cell modules isfacilitated. The rivets/screw joints may also act as spacers holding the differentlayers in place. Alternatively, the frame sections 14, 16, 18', 18" are moulded as a single piece.
The upper section 14 and the lower section 16 of the frame 12 suitably eachcomprises a plurality of openings 30 in fluid connection with the channels ofthe first support layer 20. By arranging openings 30 in fluid connection with thechannels of the first support layer 20, air is able to flow through the solar cellmodule 10. Since the solar cell layer 24 is arranged in contact with the first 14 support layer 20 the solar cell layer 24 is cooled by the air flowing through thechannels. Each channel suitably extends between an opening 30 in the uppersection 14 of the frame 12 and an opening 30 in the lower section 16 of theframe 12. The solar cell module 10 will be further described in Figures 2-5.
Figure 2 schematically shows a top view of a solar cell module 10 according toan embodiment of the invention. The solar cell module 10 is configured asdescribed in Figure 1, however, this figure does not show the solar cell layer24, the first support layer 20 or the second support layer 22. The upper section14 of the frame 12 may comprise attachment holes 31 for attaching the solarcell module 10 to a batten by means of fasteners.
Figure 3a and 3b schematically shows cross-sections of a solar cell module 10according to embodiments of the invention. The solar cell module 10 isconfigured as described in Figure 1 and Figure 2 but the frame 12 is omitted,such that the layers of the solar cell module 10 are shown. Figure 3a shows asolar cell module 10 comprising a first support layer 20 and a solar cell layer24. Figure 3b shows a solar cell module 10 comprising a first support layer 20,a second support layer 22 and a solar cell layer 24. The first support layer 20may comprise one or more rows of channels. The first support layer 20 isthicker than the second support layer 22. The first support layer 20 is a loadcarrying layer. The second support layer 22 may comprise one or more rows ofchannels. The second support layer 22 prevents leakage on the underlyingroofing felt and leads water away from the solar cell module 10. The channelsof the first support layer 20 and the second support layer 22 may have anycross-section, for example rectangular, honeycomb, latticework or similar. Thisis however not shown in the figures. By using layers comprising channels theweight of the solar cell module 10 is reduced and the mounting of the solar cellmodule 10 is facilitated.
The solar cell module 10 further comprises a connection box 32 for electronics.The connection box 32 may be arranged adjacent the first support layer 20 underneath the solar cell layer 24. ln the case where the solar cell module 10comprises a second support layer 22 the connection box 32 may be arrangedon top of the second support layer 22, coplanar with the first support layer 20,as shown in Figure 3b. The connection box 32 may be arranged in an openingin the first support layer 20. Alternatively, the first support layer 20 comprisestwo or more separate parts arranged in parallel, wherein the connection box 32is arranged between two parts, underneath the solar cell layer 24. Theconnection box 32 may alternatively be arranged underneath the upper section14 of the frame 12, coplanar with the first support layer 20 or coplanar with thesolar cell layer 24. The solar cell layer 24 comprises a thin film of photovoltaicmaterial on a glass substrate. Alternatively, the thin film of photovoltaicmaterial is sandwiched between two glass substrates. The glass substratesuitably consists of heat treated or tempered glass. The solar cell layer 24 maybe a rigid thin-film solar cell layer. The thin-film solar cells suitably comprisecadmium telluride. The first support layer 20 and the second support layer 22comprising channels will both provide a damplng function when the solar cellmodule 20 is subjected to loacls, This way the thin-film solar cell layer 24 canmove and the risk that the solar cell layer 24 cracks or breaks under load is nlinirnized.
Figure 3c schematically shows cross-sections of a solar cell module 10according to embodiments of the invention. The solar cell module 10 isconfigured as described in Figure 3a. The first support layer 20 comprises aplurality of channels 25 extending essentially perpendicularly to thelongitudinal extension of the upper section 14 and the lower section 16 of theframe 12. The channels 25 may however extend with an angle to the uppersection 14 and the lower section 16 of the frame 12. ln the upper figure the firstsupport layer 20 comprises a multiwall plastic sheet with channels 25. ln thelower figure the first support layer 20 comprises moulded plastic channels 25.The moulded channels 25 of the first support layer 20 may lack a top portionand the solar cell layer 24 may thus rest on the walls of the channels 25. The first support layer 20 suitably comprises an arbitrary number of channels 25. 16 Figure 3d schematically shows an upper section 14 of a frame 12 of a solarcell module 10 according to an embodiment of the invention. The solar cellmodule 10 is configured as described in Figure 1, Figure 2 and/or Figure 3a-c.The upper section 14 of the frame 12 comprises a first elongated portion 40arranged on the front side 26 of the solar cell module 10, a second elongatedportion 42 arranged on the back side 28 of the solar cell module 10 and anupper end portion 41 connecting the first and the second portion 40, 42. Whenthe solar cell module 10 is integrated in a roof construction 1, rooftiles 4 willoverlap the upper part of the front side 26 of the solar cell module 10. The firstportion 40 of the upper section 14 of the frame 12 may be configured such thatonly the upper section 14 of the frame 12 is overlapped and not the uncoveredsolar cell layer 24. The upper section 14 of the frame 12 further comprises sideportions 44 adapted to be connected to the side sections 18', 18" of the frame12. The upper end portion 41 may comprise openings 30. The openings 30are adapted to be in fluid connection with the channels 25 of the first support layer 20 for cooling of the solar cell layer 24.
Figure 3e schematically shows an upper section 14 of a frame 12 of a solarcell module 10 according to an embodiment of the invention. The solar cellmodule 10 is configured as described in Figure 1, Figure 2 and/or Figure 3a-d.The upper section 14 comprises a hanging portion 52 on the back side 28 ofthe solar cell module 10. The hanging portion 52 is adapted for hanging thesolar cell module 10 on a batten 2.
Figure 4 schematically illustrates the upper part of a back side 28 of a solar cellmodule 10 according to an embodiment of the invention. The solar cell module10 is configured as described in Figure 1, Figure 2, Figure 3a, 3c and/or Figure3d. The first side section 18' and the second side section 18" of the frame 12each comprise a hanging portion 52. The hanging portions 52 are arranged atthe upper end of the respective side section 18', 18", adjacent the uppersection 14 of the frame 12. Each hanging portion 52 suitably comprises an 17 upper portion 54 protruding perpendicularly to the longitudinal extension of therespective side section18', 18”. The protruding upper portions 54 are on theback side 28 of the solar cell module 10 and are adapted for hanging the solarcell module 10 on a batten 2. The protruding upper portions 54 thus abut anedge of a batten 2 when the solar cell module 10 is integrated in a roof or wallconstruction 1. Support members 58 are suitably arranged between the uppersection 14 and the lower section 16 of the frame 12 in order to retain the shapeof the frame 12. The support members 58 are suitably attached to the uppersection 14 and the lower section 16 by rivets. The support members 58 arearranged on the back side 28 of the solar cell module 10 and are thus attachedto the second elongated portion 42 of the upper part 14 of the frame 12.
Figures 5a and 5b schematically illustrate a second side section 18" of a solarcell module 10 according to an embodiment of the invention. The solar cellmodule 10 is configured as described in Figure 1, Figure 2, Figure 3a, Figure3c, 3d, 3e and/or Figure 4. Figure 5a shows the second side section 18" of theframe 12 where the lower section 16 of the frame 12 is omitted. The secondside section 18" of the frame 12 comprises a retention portion 56 adapted toengage with a left side of a roof tile 4. The second side section 18" of theframe 12 suitably comprises a retention portion 56 which is adapted to engagewith a lower part of the left side of a roof tile 4 from above. The retentionportion 56 of the second side section 18" is thus adapted to be arranged ontop of the left side of the roof tile 4. The retention portion 56 of the second sidesection 18" may be shaped like a hook wherein the hook engages withgrooves in the left side of the roof tile 4. The second side section 18" alsocomprises a drainage portion 60” for leading water away from the solar cellmodule 10. The drainage portion 60” comprises a bent/curved portion 62” forming a drainage channel 64” on the back side 28 of the solar cell module 10.
The drainage channel 64” is thus formed between the bent portion 62” and thefirst support layer 20. The bent portion 62” may be a Z bend portion. Figure 5bshows the second side section 18" as described in Figure 5a with the lowersection 16 attached. The lower section 16 of the frame 12 comprises at least 18 one drainage opening 70 arranged in fluid connection with the drainage channel 64”. This way, water can be lead away from the solar cell module 10.
Figure 6a shows the first side section 18' of the frame 12 where the lowersection 16 of the frame 12 is omitted. The first side section 18' comprises aretention portion 56 adapted to engage with a neighbouring rooftile 4. The firstside section 18' of the frame 12 may comprise a retention portion 56 adaptedto engage with a right side of a roof tile 4. The retention portion 56 of the firstside section 18' is adapted to engage with an upper part of the right side of aroof tile 4 from underneath. The retention portion 56 of the first side section 18'is thus adapted to be arranged underneath the right side of the neighbouringroof tile. The first side section 18' also comprises a drainage portion 60' forleading water away from the solar cell module 10. The drainage portion 60'comprises a drainage channel 64'. The drainage portion 60' suitably comprisesa bent/curved portion 62' forming the drainage channel 64' on the back side 28of the solar cell module 10. The drainage channel 64' is suitably formedunderneath the retention portion 56 of the first side section 18'. The bentportion 62' is suitably a Z bend portion. Figure 6b shows the first side section18' as described in Figure 6a with the lower section 16 attached. The lowersection 16 of the frame 12 comprises at least one drainage opening 70arranged in fluid connection with the drainage channel 64'. This way, water can be lead away from the solar cell module 10.
The foregoing description of the preferred embodiments of the presentinvention is provided for illustrative and descriptive purposes. lt is not intendedto be exhaustive or to restrict the invention to the variants described. Manymodifications and variations will obviously be apparent to one skilled in the art.The embodiments have been chosen and described in order best to explainthe principles of the invention and its practical applications and hence make itpossible for specialists to understand the invention for various embodimentsand with the various modifications appropriate to the intended use.

Claims (17)

19 Claims
1. A solar cell module, comprising a frame (12) with an upper elongatedsection (14), a lower elongated section (16), a first elongated side section (18')and a second elongated side section (18"); a first support layer (20) arrangedin connection to the frame (12) and a solar cell layer (24) arranged on top ofthe first support layer (20), wherein the frame (12) surrounds the first supportlayer (20) and the solar cell layer (24) peripherally and wherein the first supportlayer (20) comprises at least one channel (25).
2. A solar cell module according to claim 1, wherein the at least one channel(25) extends substantially perpendicularly to the longitudinal extension of theupper section (14) and the lower section (16) of the frame (12).
3. A solar cell module according to claim 1 or 2, wherein the solar cell layer(24) comprises a thin-film solar cell.
4. A solar cell module according to any of the preceding claims, wherein the first support layer (20) comprises a multiwall plastic sheet with channels (25).
5. A solar cell module according to any of the preceding claims, wherein asecond support layer (22) is arranged underneath the first support layer (20).
6. A solar cell module according to claim 5, wherein the second support layer(22) comprises a multiwall plastic sheet with channels extending substantiallyperpendicularly to the longitudinal extension of the upper section (14) and thelower section (16) of the frame (12).
7. A solar cell module according to any of the preceding claims, wherein thesolar cell module (10) is adapted to constitute an integrated part in a roof or wall construction (1).
8. A solar cell module according to any of the preceding claims, wherein theframe (12) comprises at least one opening (30) in fluid connection with the atleast one channel (25) of the first support layer (20).
9. A solar cell module according to any of the preceding claims, wherein a connection box (32) is arranged adjacent the first support layer (20).
10. A solar cell module according to any of the preceding claims, wherein theframe (12) is essentially rectangular, where the upper section (14) and the lower section (16) are longer than the side sections (18', 18").
11. A solar cell module according to any of the preceding claims, wherein thefirst side section (18') and the second side section (18") of the frame (12) eachcomprises a retention portion (56) adapted to engage with a neighbouring rooftile (4).
12. A solar cell module according to any of the preceding claims, wherein the frame (12) comprises metal.
13. A solar cell module according to any of the preceding claims, wherein theframe (12) comprises at least one hanger portion (52).
14. A solar cell module according to any of the preceding claims, wherein atleast one support member (58) is arranged between the upper section (14)and the lower section (16) of the frame (12).
15. A solar cell module according to any of the preceding claims, wherein thefirst side section (18') and the second side section (18") of the frame (12) each comprises a drainage portion (60', 60"). 21
16. A solar cell module according to claim 15, wherein the drainage portion(60', 60") of each side section (18', 18") comprises a drainage channel (64',64").
17. A solar cell module according to claim 16, wherein the lower section (16) ofthe frame (12) comprises at least one drainage opening (70) arranged in fluid connection with each drainage channel (64', 64").
SE1551254A 2015-09-30 2015-09-30 Solar cell module SE540502C2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
SE1551254A SE540502C2 (en) 2015-09-30 2015-09-30 Solar cell module
CN201680056914.7A CN108139114A (en) 2015-09-30 2016-09-28 Solar cell module
EP16852181.3A EP3356748A4 (en) 2015-09-30 2016-09-28 Solar cell module
PCT/SE2016/050918 WO2017058084A1 (en) 2015-09-30 2016-09-28 Solar cell module
HK18115298.7A HK1256198A1 (en) 2015-09-30 2018-11-29 Solar cell module

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Application Number Priority Date Filing Date Title
SE1551254A SE540502C2 (en) 2015-09-30 2015-09-30 Solar cell module

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SE540502C2 SE540502C2 (en) 2018-09-25

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HK (1) HK1256198A1 (en)
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US20080135090A1 (en) * 2006-12-11 2008-06-12 Sunmodular, Inc. Solar roof tiles with heat exchange and methods of making thereof
CN201017892Y (en) * 2007-02-13 2008-02-06 奈米龙科技股份有限公司 House tile type solar module framework
ITTV20070113A1 (en) * 2007-06-25 2008-12-26 Soleya Srl MODULAR PANEL FOR THE VENTILATED ROOF COVERING WHICH INTEGRATES AN INTERCHANGEABLE MODULE WITH PHOTOVOLTAIC CELLS OR A HEAT EXCHANGER, WITH SERIAL-CONNECTED MODULES IN A COMBINED ROOF SYSTEM
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SE540502C2 (en) 2018-09-25
HK1256198A1 (en) 2019-09-13
CN108139114A (en) 2018-06-08
WO2017058084A1 (en) 2017-04-06
EP3356748A4 (en) 2019-02-27
EP3356748A1 (en) 2018-08-08

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