DE102008048547A1 - Roofing module - Google Patents

Abstract

A roofing module with a module body that can be integrated into a house roof covering, and with a photovoltaic unit, which is mounted on the module body, is known. According to the invention, it is provided that the module body is designed as a two-shell hollow plastic body (3), wherein the two shells (5, 6) are circumferentially welded together at their edge regions. Insert for gable roofs.

Description

The The invention relates to a roof covering module with a module body, which can be integrated in a house roof covering, as well as with a photovoltaic unit, which is mounted on the module body.

A known roofing module according to the DE 82 12 100 U1 consists of a photovoltaic unit receiving a module body, which is constructed to form a cavity of a trough-shaped base body and a photovoltaic unit supporting the cover plate. The cavities of adjacent Dachbedeckungsmodule are interconnected to thereby cool the solar cells or to use the heated, flowing through these cavities air for heat generation. In this known roofing module of the modular body made of concrete, in particular cast of polymer concrete, alternatively, glass is provided for the cover plate.

The Use of concrete or polymer concrete for the production of this known Module body leads to a high weight the same with the disadvantageous consequence that weight module body can not be made in size to the photovoltaic units available on the market to record with large optically active surfaces which, of course, increases the overall efficiency a plant made of several such known Dachbedeckungsmodule deteriorated. Finally, this is known Module body also not economically in a mass production due to the high curing time required for polymer concrete produce.

task The invention is a roof covering module of the aforementioned To create a way that is easy and inexpensive to produce is and together in combination with other roof covering modules leads to a high overall efficiency.

These Task is solved by the module body designed as a two-shell plastic hollow body, wherein the two shells at their edges circumferentially with each other are welded.

The Production of the module body of plastic leads to a weight reduction compared to the known module body, but without leading to a poor rigidity. The mechanical stability is due to the clam shell Construction ensured to form a cavity. Leave it with the solution according to the invention roofing modules manufacture whose module body such a size also have photovoltaic modules with large active To be able to record surfaces. After all allows the simple design of the invention Module body as a two-shell plastic body Great freedom of design in terms of geometric Design, in particular adaptation to photovoltaic units to be accommodated and possible connection geometries of a roof covering.

In Embodiment of the invention is the hollow plastic body produced by twinsheet thermoforming or by blow molding. With these methods, both shells of the plastic hollow body can be with simultaneous heating and deformation and tight Weld circumferentially in the peripheral areas. This will be a further rationalization of the production of the invention Module body possible because in particular the cycle times the production of the same in a mass production with this invention Solution can be further reduced.

In Further embodiment of the invention, the module body on an upper side an at least substantially flat receiving surface on whose dimensions on external dimensions of the photovoltaic unit are tuned to accommodate the photovoltaic unit surface to be able to. This makes it possible to use module bodies to different geometric shapes of photovoltaic units to adapt and thus different needs for photovoltaic systems to meet. If the receiving surface is a circumferential Edge profiling assigned to the on the receiving surface Positioned photovoltaic unit bounded, which can be used in the market Solar modules, consisting of a solar cell laminate and this Solar cell laminate receiving frame (aluminum or stainless steel) omitted and therefore leads to cost savings the use of photovoltaic units with framing.

In a further embodiment of the invention, the receiving surface on a contouring, are embedded in the individual solar cells and / or electrical connection lines between the solar cells of the photovoltaic device. This makes it possible to further simplify the structure of the photovoltaic unit in such a way that the commonly used PVF (Polyvinilfluorid) film (Tedlarfolie) can be omitted. This film is usually used as a composite film for the back side Beschich tion of solar cells in the composite. The contouring allows a position assurance and a defined orientation of the connecting lines and / or the individual solar cells or a solar cell network. Preferably, this contouring extends like a lattice over the receiving surface and can preferably be formed rib-shaped or groove-shaped. This makes it possible to simplify this contouring Way to realize because not the exact location must be determined for each individual strip-shaped connector between individual solar cells, but the grid is placed so that the contouring and the joints between adjacent solar cells are congruent to each other.

In Another embodiment of the invention, the edge profiling and the contouring in one piece on an upper shell of the Plastic hollow body formed. This is a low cost Variant, as a production in one operation allows is.

In Another embodiment of the invention is the hollow plastic body below the receiving surface with a one or more parts Cavity arrangement for a liquid or gaseous cooling medium Mistake. With this embodiment of the invention can not only electricity be generated with the roof covering module, but also to improve the efficiency of solar cells sufficient heat dissipation be ensured because a befindliches in the cavity assembly, liquid or gaseous medium, for example air or water, for Cooling the underside of the photovoltaic unit can serve. In addition, advantageously, this can be achieved by appropriate heat transfer heated liquid medium as a hot water collector be used. This means that the inventive Roof covering module also take over the function of a solar thermal collector can. Especially when using thin-film solar cells can solar energy radiated over the entire spectrum optimally converted into electricity and heat, as such Solar cells almost completely absorb the infrared radiation, however, convert the shortwave radiation into electricity. The warming The solar cells by the infrared radiation is by the solar thermal Collector cooled. At the same time the desired Heating of a water cycle achieved.

Around in conjunction with other roofing modules according to the invention to optimize this function of a solar thermal collector, In a further embodiment of the invention, the cavity arrangement with at least one inlet and at least one outlet for the flow a heat-absorbing liquid provided. As a result, it is possible for the adjoining ones laid in the composite roofing modules according to the invention over to easily connect these inflows and outflows. It is also an easy connection to a domestic water circuit allows.

In Another embodiment of the invention, the cavity assembly with Provided flow, which in particular in one piece are formed on the lower shell of the hollow plastic body. Such flow guides may preferably be designed as channel channels, which together with the upper shell the cavities for the flow through the form heat-absorbing liquid. It can these channel channels provided with different cross-sectional profiles be, for example, with a semicircle, semi-ellipse-rectangle or triangle profile or with mixed forms of these listed profiles. This makes it possible to target requirements to fulfill the solar thermal function, which at the Production of the hollow plastic body, preferably by Twinsheet thermoforming in a simpler and therefore cheaper Manner can be realized without the benefit of Zweistückigkeit to lose the plastic hollow body. So can by the one-piece shaping of the flow guide on the lower shell of the hollow plastic body the the Receiving surface for the photovoltaic unit forming upper shell with regard to the embedding of the photovoltaic unit optimized both in terms of geometric and functional Requirements are designed.

In Another embodiment of the invention is the upper shell the plastic hollow body at least partially transparent designed. This will increase the efficiency for achieved the solar thermal function of the roof covering module, since the heat absorption is essentially no longer in the transparent Area, in particular in the area of the receiving surface of Photovoltaic unit of the upper shell takes place, but in the area of liquid or gaseous cooling medium, especially in the heat-absorbing liquid or on the lower shell of the hollow plastic body. For this can ink the heat-absorbing liquid be. Alternatively or additionally, the bottom of the lower Shell dark colored. At the same time it will also achieved a better cooling of the solar cells, thereby their efficiency also improves, so that an overall higher Overall efficiency is achieved.

In Another embodiment of the invention is on the plastic hollow body at least one connector region for an electrical Plug connection formed. Advantageously, this makes it possible which for those in a house roof covering in association with several roofing modules according to the invention required Electrical installation from the back of the roof easily accessible. That's it as well possible, the electrical wiring both within a photovoltaic unit as well as to adjacent photovoltaic units in a protected area from environmental influences make. Preferably, the connector area is at the formed lower shell of the plastic hollow body, so that thereby the advantage of Zweistückigkeit the plastic hollow body preserved.

In Another embodiment of the invention is the photovoltaic unit as a layer structure of a cover glass and the solar cells with electrical Interconnection designed. This extremely simple Layer structure differs from known layer structures of photovoltaic units that have at least one additional Have layer in the form of a Tedlarfolie. Besides, have known photovoltaic units usually have a frame, the invention also omitted. In this case, the solar cells are preferably strip-shaped Connector electrically serial to so-called strings together connected. A photovoltaic unit can have several such strings which are usually connected in parallel. For the production It is customary for such a photovoltaic unit to be the solar cell string in the manner of a composite with a polyester film (PVDF or EVA film) as a primer layer on the back of the cover glass and then with a Another polyester film (PVDF film or EVA film) and a Polymer film, preferably PVF film (Tedlarfolie) cover. When Final production step can be lamination of a such structure with at least one solar cell string done and a framing by an aluminum or stainless steel frame. Tedlarfolie and frame can be omitted according to the invention, so that results in a very simple structure. The edge profiling according to the invention can replace a corresponding frame. Such a photovoltaic unit can in the plastic hollow body according to the invention, be embedded in particular in the receiving surface. The embedding is preferably carried out by a potting compound or by a bond in the edge region, preferably in addition in at least limited areas on the back of the Photovoltaic unit. It is particularly advantageous for such a photovoltaic unit without the otherwise necessary frame in an inventive Embed receiving surface with circumferential edge profiling. Finally, to protect against environmental influences, preferably in the region of the current edge of the photovoltaic unit, a sealant is applied, which is the between the edge of the photovoltaic unit and the edge profiling lying fugue covered. Especially advantageous is the use of a sealing bead to the penetration Moisture and dirt over the entire life to ensure the photovoltaic unit.

Next the use of a photovoltaic unit, in which the solar cells already in a composite of glass plate and plastic layers embedded in a further embodiment of the Invention the solar cells directly into the with peripheral edge profiling provided receiving surface are embedded, preferably in the with the contouring according to the invention provided receiving surface of the plastic hollow body. These are the over electrical connection lines connected solar cells, preferably at least one solar cell string first in the receiving surface of the upper shell under installation of the connecting lines in the preferably grid-like Contouring inserted, followed by a transparent Potting compound, preferably embedded resin for fixing and finally covered with a coverslip and the edge area sealed with a sealant. This will be a particularly lasting Encapsulation of the solar cell achieved and also a particularly cost-effective Production of roofing module according to the invention possible. The reduction of the manufacturing costs is thereby requires that the usual sandwich construction for the production commercially available photovoltaic units using the plastic hollow body according to the invention, especially with the edge profiling and the lattice-like Contouring shaped upper shell of the plastic hollow body can be reduced. In addition, the before embedding in the upper shell of the invention usual separate enclosure and embedding steps omitted. Another Cost reduction results from the fact that after manufacturing the Solar cell strings this in the subsequent process step immediately in the upper shell of the hollow plastic body according to the invention be inserted, allowing further handling of the solar cells with corresponding risk of breakage is eliminated.

Further Features and advantages of the invention will become apparent from the claims as well as from the following description of exemplary embodiments. Show it:

1 a perspective view of a roof opening of a building in which six identical embodiments of the roof covering module according to the invention are used in conjunction with the roof surface instead of conventional roof tiles,

2 a perspective view of an embodiment of a roof covering module according to the invention,

3 a perspective, sectional view of the roof covering module according to 2 along the section line II,

4 an enlarged section of the section II after 3 without a photovoltaic unit,

5 another section of Section II after 3 , also enlarged,

6 a perspective view of an embodiment of the roofing module according to the invention,

7 a sectional view of the roof covering module according to 6 along the section line II-II,

8th a further sectional view of the roofing module after 6 along the section II-II with embedded photovoltaic unit,

9 a perspective, rear view of an embodiment of the roof covering module according to the invention, and

10 a rear perspective view of a roof portion of a gable roof of a building in which six identical embodiments of the inventive Shen roofing module are used in conjunction with adjacent roof tiles of the roof instead of conventional roof tiles.

A composite of six identical embodiments of the roof covering module according to the invention 2 is after 1 in a roof area 1 integrated into a building, each of these roof covering modules 2 replaced conventional roof tiles. The basic structure of each of these roofing modules 2 with a two-shell plastic hollow body 3 and a photovoltaic unit disposed thereon 4 corresponds to the basis of the 2 to 9 hereinafter described embodiments. For the neighboring laying of roofing modules 2 as well as to adjacent roof tiles have the plastic hollow body 3 in the coverage areas (first, eaves and Ortstseitig) corresponding profiles on. Visible in 1 are cover folds 9 that with adjacent modules 2 or adjacent roof tiles in the respective ortseitseitige overlap area with their Wasserfalzen engaged.

As in 1 there is also the roof covering module 2 after the 2 and 3 from a two-shell plastic body 3 and a photovoltaic unit disposed thereon 4 , wherein the hollow plastic body 3 from one the photovoltaic unit 4 receiving, upper shell 5 and a lower shell 6 is formed, as in particular from the sectional view 3 is apparent.

The upper shell 5 and the lower shell 6 are jointly produced by twinsheet thermoforming, wherein in a basically known manner, two plastic plates deep-drawn together in suitable devices and at least welded together at the edge side. This is how the upper shell is made 5 of the plastic hollow body 3 Deep-drawn so that by appropriate profiling ridge an upper transition surface 11 and Orstgangseitig a Deckfalz 9 and opposite waterfalls 10 result. In addition, one to the dimensions of the photovoltaic unit 4 adapted, substantially unprofiled central surface to form a flat receiving surface 8th for the photovoltaic unit 4 provided by an edge profiling 7 is surrounded. The edge profiling 7 is under formation of a substantially to the receiving area 8th orthogonal wall surface 24 in the enlarged ridge-side detail view 4 Section II 3 clearly visible, but in which the photovoltaic unit 4 for better visibility of the edge profiling is not shown. On the side of the eaves no edge profiling is provided because the photovoltaic unit 4 with the edge of the plastic hollow body adjacent the eaves 3 as a result also with the corresponding edge of the upper shell 5 , edges flush. This is reflected in the enlarged eaves-side detail view 5 according to section II 3 clearly.

In the embodiment of the roof covering module according to the invention 2 according to the 1 . 2 . 3 and 5 can be commercially available photovoltaic units 4 be used. The structure usually consists of a cover glass on the sun-facing side, a transparent plastic layer (EVA or PVDF film), in which the solar cells are embedded, mono- or polycrystalline solar cells, by strip-shaped connector, usually to strings electric are interconnected, a back side lamination with a weather-resistant plastic composite film, eg. For example, from PvDF and Tedlar and finally from an aluminum or stainless steel frame to protect the cover glass and for the attachment and stiffening of the composite. Of course, photovoltaic units are also of a different construction, for example. So-called laminated glass-glass modules or glass-glass modules in cast resin technology. Particularly advantageous is a layer structure for a photovoltaic unit 4 provided, which is dispensed with a back side lining and a frame.

Such a commercially available photovoltaic unit 4 is by gluing on the receiving surface 8th in the upper shell 5 embedded by adhesive 21 in the first- and Organggang profiling 7 as well as in a parallel to the Traufeseitigen edge adhesive groove 20 is introduced, as in the 3 and 5 is shown.

The plastic hollow body according to the invention 3 according to the 6 . 7 and 8th has in contrast to the embodiment of the 2 . 3 and 5 also on the side of the eaves of the upper shell 5 an edge profiling 23 on, after 7 web-like with a to the receiving surface 8th adjacent and substantially perpendicular to the same standing wall surface 24 is trained. Together with the edge profiling 7 , the firstsei tig and respectively Ortstseitig the receiving surface 8th the upper shell 5 of the plastic hollow body 2 bounded, results in a recording area 8th completely circumferential profiling, as on this substantially perpendicular wall surface 24 is trained. The 8th shows in a perspective partial cross-section in such a complete of the wall surface 24 framed recording surface 8th embedded photovoltaic unit 4 Made from a typical setup with a sun-glazed cover glass 29 , a transparent EVA or PVDF film 28 , a solar cell 27 and a backside lamination of a PVDF or EVA film 26 and a Tedlar film 25 but without the usual aluminum or stainless steel frame. This photovoltaic unit 4 is on the receiving surface 8th placed on and glued by adhesive with this or fixed by means of a potting compound on the plastic hollow body. In addition, the between the peripheral edge of the cover glass 29 and the surrounding area 24 existing butt joint with a sealant 30 covered that after 8th is designed as a sealing bead. One with such a photovoltaic unit 4 constructed roofing module 2 is then used according to the in 1 shown manner laid in a roof composite.

In a further embodiment is after 6 and 7 on the receiving surface 8th for the photovoltaic unit 4 a latticed contouring provided with flat embedding or grooves 22 is provided. The resulting by the lattice-shaped geometry rectangular part surfaces are congruent to those on this receiving surface 8th lying individual solar cells, whereby the individual cells connecting strip-shaped connector, which usually extend beyond the level of the backs of the solar cells in their height extent, in these grooves 22 be embedded.

This additional measure according to the invention makes it possible to produce a roof covering module according to the invention with regard to the construction of the photovoltaic unit used 4 as well as their embedding in the receiving surface 8th the upper shell of the plastic hollow body 2 in several ways further simplify.

With the grid-like contouring 22 on the receiving surface 8th can be the structure of the photovoltaic unit 4 to 8th so simplify that the Tedlar film 25 , which is usually very expensive, can be omitted. Such a photovoltaic unit 4 is also in the receiving area 8th glued or cast in and with a sealing bead 30 Protected against environmental influences. One with such a photovoltaic unit 4 constructed roofing module 2 Of course, as well in the in 1 shown manner to be laid in a roof composite.

In contrast, a particularly cost-effective embodiment of the roof covering module according to the invention can be produced when the upper shell 5 with the surrounding wall surface 24 and the grid-like contouring 22 directly receives the solar cell strings, since their embedded in the contouring strip-shaped connector take over the fixation of the solar cell strings. A solar cell string extends, for example, in the in 6 illustrated plastic hollow body 3 parallel to the direction of the ridge or the eaves, so that three solar cell strings can be embedded in the receiving surface. The so on the receiving surface 8th inserted solar cell strings are poured with a transparent potting compound, preferably cast resin, for fixing, covered with a coverslip and finally in the edge region of the cover glass with a sealing bead accordingly 8th sealed. The construction of the upper shell 5 with the embedded photovoltaic unit 4 thus corresponds to the one after 8th , with the difference that the slides 25 and 26 on the back and the foil 28 between the solar cell 27 and the coverslip 29 are replaced by the potting compound, which is also the between solar cell 27 or cover glass 29 and the surrounding wall surface 24 fills lying butt joint. For a particularly durable encapsulation of the solar cell is achieved and also a particularly cost-effective production of roofing module according to the invention possible, which also in the in 1 illustrated manner can be used.

The solar thermal function of the roof covering module according to the invention 2 is essentially from the lower shell 6 of the plastic hollow body 3 formed, as required for this cavity assembly 15 is formed with the appropriate profiling in the thermoforming process. The in the 3 to 5 and 7 to 9 shown cavity assembly has below the photovoltaic unit flow guide 15 . 16 and 17 on, which are designed as channel channels, wherein a rectangular shape with attached semicircle is used as a cross-sectional profile. The course of these channel channels 15 . 16 and 17 is in 9 shown, according to which in the longitudinal direction, ie parallel to the first or eaves side edge of the roof covering module 2 substantially parallel aligned, four channel troughs 15 run on the transverse side over transverse channels 16 connected to each other. In the middle of the crossways 16 are on opposite sides outward in the edge region extending connection troughs 17 or habala-shaped approaches 17 formed, which form a drain or inflow to the flow of a heat-absorbing liquid and with corresponding connection channels 17 be closely connected by adjacent Dachbedeckungsmodulen means of a connecting piece.

Because the two bowls 5 and 6 of art material hollow body 3 jointly heated in a single operation in a twinsheet process, deep-drawn at the same time and welded together by means of corresponding surface pressing against each other, this results in the semi-open channel, transverse and connecting channels 15 . 16 and 17 under formation of channels and connecting pieces tightly closed, as clearly in the 3 to 5 . 7 and 8th can be seen. At the same time, the peripheral edge areas of the two shells 5 and 6 tightly welded together.

As with the upper shell 5 of the plastic hollow body 3 also has its lower shell 6 first, eaves and Ortstseitig profiles with the required overlap geometries for a defined laying with adjacent other roofing modules according to the invention 2 or ordinary roof tiles.

The wiring of the photovoltaic units 4 the roofing modules laid in the composite 2 via a connector area 18 who after 9 on the lower shell 6 of the plastic hollow body 3 is formed simultaneously with the thermoforming process and as a box-shaped connection housing with square cross-section for example. Plug or clamp connections of the photovoltaic unit 4 is trained. Through an opening 19 in the lower shell 6 The plug-in or clamp connections of the solar cells are led to the outside in this connection housing to there with leads of other photovoltaic units 4 to be interconnected. For reasons of space, the two middle channel channels 15 around this connection housing 18 led around. This connection housing 18 is closed by means of a lid, which in 9 not shown. This connection housing 18 can of course have any other shape, for example. Be formed like a box with circular cross-section.

In order to achieve a good overall efficiency, so both in terms of solar thermal and the photovoltaic function, the entire upper shell 5 in the embodiments of transparent plastic and the lower shell 5 made of a non-transparent, preferably black colored plastic. As a result, the heat absorption is no longer predominantly in the upper shell, but mainly directly in the region of the flowing and heat-absorbing liquid in the channels or in the region of the lower shell 6 , whereby at the same time the cooling of the solar cells is improved. This effect can be enhanced if, instead of monocrystalline or polycrystalline solar cells (thick-film cells), amorphous solar cells (thin-film cells) are used which are photovoltaically adjusted to short-wave solar radiation and at the same time almost completely absorb the infrared radiation, with the result that the resulting heat almost completely from the heat transport medium or the lower shell 6 is recorded.

Alternatively, the upper shell 5 for design reasons also be colored in tile color, which in conjunction with the normal roof tiles results in an aesthetically pleasing overall picture of a uniform roof area, since the color of the roof covering modules according to the invention is adapted to the color of the other tiles.

On the back of the post 1 shown front view of the roof opening are after 10 the backs of the lower shells 6 the laid in conjunction with normal roof tiles six roofing modules according to the invention 2 to recognize. In particular, the channel channels 15 , the connection supports as well as the connector areas 18 clearly visible. The connecting pieces 17 Adjacent roofing modules are connected via connecting means in the form of hose or pipe profiles liquid-conducting and tightly interconnected.

QUOTES INCLUDE IN THE DESCRIPTION

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Cited patent literature

• - DE 8212100 U1 [0002]

Claims (16)

Roof covering module having a module body which can be integrated into a house roof covering, as well as having a photovoltaic unit which is fastened on the module body, characterized in that the module body is designed as a two-shell plastic hollow body ( 3 ), whereby the two shells ( 5 . 6 ) are circumferentially welded together at their edge regions. Roof covering module according to claim 1, characterized in that the hollow plastic body ( 3 ) is made by twinsheet thermoforming or by blow molding. Roof covering module according to claim 1 or 2, characterized in that the module body ( 3 ) on an upper side an at least substantially planar receiving surface ( 8th ) whose dimensions are based on external dimensions of the photovoltaic unit ( 4 ) are tuned to the photovoltaic unit ( 4 ) to record area. Roofing module according to claim 3, characterized in that the receiving surface ( 8th ) a peripheral edge profiling ( 7 . 23 ) associated with the on the receiving surface ( 8th ) positioned photovoltaic unit ( 4 ) bounded. Roof covering module according to claim 3 or 4, characterized in that the receiving surface ( 8th ) a contouring ( 22 ) into which individual solar cells and / or electrical connection lines between the solar cells of the photovoltaic unit ( 4 ) are embedded. Roofing module according to claim 5, characterized in that the contouring ( 22 ) latticed over the receiving surface ( 8th ) runs. Roof covering module according to claim 4 and 5, characterized in that the edge profiling ( 7 . 23 ) and the contouring ( 22 ) in one piece on an upper shell ( 5 ) of the hollow plastic body ( 3 ) are formed. Roof covering module according to claim 1, characterized in that the hollow plastic body ( 3 ) below the receiving surface ( 8th ) with a one- or multi-part cavity arrangement ( 15 . 16 . 17 ) is provided for a liquid or gaseous cooling medium. Roof covering module according to claim 8, characterized in that the cavity arrangement ( 15 . 16 . 17 ) is provided with at least one inlet and at least one outlet for the passage of a heat-absorbing liquid. Roof covering module according to claim 9, characterized in that the cavity arrangement with flow guiding means ( 15 . 16 . 17 ), which in particular is integrally formed on the lower shell ( 6 ) of the hollow plastic body ( 3 ) are formed. Roof covering module according to at least one of the preceding claims, characterized in that the upper shell ( 5 ) of the hollow plastic body ( 3 ) is designed at least partially transparent. Roof covering module according to at least one of the preceding claims, characterized in that on the plastic hollow body ( 3 ) at least one connector area ( 18 ) is formed for an electrical connector. Roofing module according to claim 12, characterized in that the connector area ( 18 ) on the lower shell ( 6 ) of the hollow plastic body ( 3 ) is provided. Roof covering module according to at least one of the preceding claims, characterized in that the photovoltaic unit ( 4 ) as a layer structure of a cover glass ( 29 ) and the solar cells ( 27 ) is designed with electrical circuitry. Roofing module according to claim 14, characterized in that the photovoltaic unit ( 4 ) by a transparent potting compound, in particular a casting resin, on the module body ( 3 ) is fixed. Roofing module according to claim 14 or 15, characterized in that sealing means ( 31 ) are provided to the photovoltaic unit ( 4 ) on the receiving surface ( 8th ) of the module body ( 3 ) to protect against environmental influences.