SYSTEM FOR FIXING AT LEAST ONE PHOTOVOLTAIC MODULE ON A ROOF SURFACE AND ROOF SURFACE INCLUDING SUCH A FIXING SYSTEM

Abstract

The invention relates to a system for fixing at least one photovoltaic module to a roofing surface comprising at least one roofing element, said system comprising at least: – a first profile, called the base profile, which includes: a central portion forming a base arranged to receive an edge of a photovoltaic module and two lateral wings extending from each side of the central portion; – a fixing device configured to be fixed to at least one roofing element and which includes two fixing tabs, each of which is fixed to one of the lateral wings of the first profile. Figure to be published with the abbreviation: [Fig. 1]:

Description

Title of the invention: SYSTEM FOR FIXING AT LEAST ONE PHOTOVOLTAIC MODULE ON A ROOFING SURFACE AND ROOFING SURFACE COMPRISING SUCH A FIXING SYSTEM

[0001] The present invention relates to the general field of photovoltaic panels or modules, and more particularly, the invention relates to the fixing of photovoltaic modules on roofing surfaces, such as roofs, for example roofs of industrial, public, agricultural, shade or residential buildings.

[0002] For about ten years, for economic reasons, a definite interest has developed in the use of solar energy to partially meet the electricity consumption needs of homes, commercial or industrial premises, or to generate additional income by reselling electricity to an electricity producer and / or supplier.

[0003] Thus, to produce electricity, it is known to place on roofs photovoltaic modules comprising photovoltaic cells coupled in series to each other and generating a direct current when exposed to sunlight.

[0004] Certain large roof areas, such as those of livestock buildings, are increasingly being converted or constructed by assembling photovoltaic modules. There is also the installation of solar canopies in parking lots, for example at shopping centers or amusement parks; that is, one or more structures equipped with photovoltaic modules under which cars can park in the shade and which, in addition, produce electricity.

[0005] A photovoltaic module is most often formed from a laminated panel, comprising two glass substrates on the front and rear faces, and between which are arranged photovoltaic cells made up of a stack of semiconductor materials (for example silicon) sandwiched between two metallic electrodes.

[0006] The above-mentioned elements constituting the photovoltaic cells are surrounded and supported by a metal frame, which also integrates the cables for electrical distribution. This frame offers the advantage of allowing a photovoltaic module to be easily installed and fixed on a roof, or at least a roofing surface.

[0007] The fixing of such photovoltaic modules is usually carried out by fixing them to the existing framework, more particularly on and transversely to battens or to The modules are then fitted with suitable fixing systems, such as metal profiles spaced the width of a module. The modules are then placed against the profiles and secured using appropriate fixing methods.

[0008] The installation of such photovoltaic modules on roofing surfaces, roof or shade structure, is a task carried out at height, making it difficult to position and fix the various elements of the fixing devices that interface between the roofing surface and the photovoltaic modules.

[0009] In addition, existing photovoltaic mounting systems and modules are generally composed of several elements which need to be fixed each to the covering surface and / or to each other using fasteners, such as screws, rivets and / or bolts.

[0010] Unfortunately, due to the height and productivity requirements, it is common for the fixing devices not to be properly fixed, leading to risks of a photovoltaic module becoming detached, especially when there is a lot of wind.

[0011] Furthermore, it is necessary for operators to use heavy and bulky tools, such as screwdrivers, buttonhole tools, riveters, etc., which make the installation of such fastening systems difficult, tiring and time-consuming, especially at height.

[0012] Furthermore, the present invention thus aims to remedy at least one of the aforementioned drawbacks by proposing a new type of fixing system for at least one photovoltaic module on a roof surface comprising at least one roofing element, said system comprising at least: - a first profile, called the base profile, which includes: a central part forming a base designed to accommodate an edge of a photovoltaic module and, two lateral wings extending on each side of the median part; - a fixing device configured to be fixed to at least one roofing element and which includes two fixing tabs, each of which is fixed to one of the lateral wings of the first profile.

[0013] The fixing system according to the invention thus offers another solution to the known systems for fixing photovoltaic modules on a roof surface, and more particularly to the roof elements of said surface. The fixing system according to the invention allows for a simpler and faster fixing of a photovoltaic module onto a roofing surface.

[0014] According to one possible feature, said fastening device includes hooks configured to cooperate with one or more openings provided in said at least one cover element. The fact that the fastening device, which provides the mechanical connection between the roofing element and the base profile, is itself fixed to said roofing element by mechanical cooperation, for example by inserting or fitting hooks into openings provided in said roofing element, makes it possible to avoid using tools and fasteners, such as a screwdriver and screws, etc., thus reducing the labor time required to install said fastening systems according to the invention.

[0015] According to another possible feature, said fastening device is configured to be fixed via at least one opening provided in said at least one roofing element and two complementary pieces forming a mortise and tenon joint. This method of attaching the fastening system to a roofing element allows the system to be attached to a roofing element simply, quickly and with minimal tools, or even none at all, thus eliminating the need to handle heavy and unwieldy tools to carry out this operation.

[0016] According to another possible feature, said system includes at least one clip configured to secure a part of the first profile to a part of said at least one photovoltaic module. The photovoltaic module is advantageously attached to the mounting system of the invention by means of a clip (or clamp), thus eliminating the need for the operator to screw, bolt, etc., the module to the mounting system, thereby simplifying and speeding up the installation of the photovoltaic module on the roofing surface using the mounting system according to the invention.

[0017] According to another possible feature, the clip is configured to attach the first profile to a photovoltaic module by friction and / or snap-fit. Advantageously, the clip (or clamp) "pinches" a portion of the photovoltaic module and the first profile, the mechanical interaction of the clip on these portions by friction and / or snap-fit ​​secures the photovoltaic module to the first profile of the mounting system.

[0018] According to another possible feature, said fastening system includes a reinforcing piece configured to cooperate mechanically with the first profile, transversely to the longitudinal axis of said first profile. The reinforcing piece strengthens the mechanical integrity of the mounting system according to the invention when at least one photovoltaic module is mounted on said system. Advantageously, the reinforcing piece is fixed near or in mechanical cooperation with one of the free edges of said at least one photovoltaic module.

[0019] According to another possible feature, said reinforcement piece is configured to be fixed by snap-fit ​​and / or a tenon-mortise assembly to said first profile. Advantageously, the reinforcement piece can be fixed by mechanical cooperation, snap-fit ​​and / or tenon-mortise assembly to the first profile, therefore without the use of additional tools and / or fasteners, such as screws, bolts, rivets, etc.

[0020] According to another possible feature, said fixing system includes a second profile, called angle bracket, configured to join together two adjacent photovoltaic modules. The second profile allows two adjacent or side-by-side photovoltaic modules to be joined longitudinally or transversely, thus reinforcing the mechanical strength of the assembly formed by one or two fixing systems, as well as several photovoltaic modules.

[0021] According to another possible feature, said second profile is configured to fit together by elastic deformation astride at least two photovoltaic modules. Advantageously, the second profile can be fixed without additional tools or fasteners. The second profile can thus join two adjacent photovoltaic modules by mechanically engaging with each edge of said modules, for example by interlocking with said edges after elastic deformation.

[0022] According to another possible feature, the second profile includes water drainage openings, for example at least one opening provided at each of the longitudinal ends of said second profile.

[0023] According to another possible feature, said median part, such as a core, and the lateral wings having a substantially trapezoidal shape. The first profile advantageously has a (transverse) section whose shape is substantially open trapezoidal, a shape which allows the first profiles of the fastening system according to the invention to be stacked (by interlocking) in order to facilitate their transport and storage.

[0024] According to another possible feature, the first profile, the fixing device, the second profile and / or the reinforcing piece are monoblocs. Advantageously the first profile, the fixing device, the second profile and / or the reinforcing piece are monobloc or unitary, reducing their manufacturing cost, facilitating their installation and / or improving their mechanical strength.

[0025] According to another possible feature, the first profile, the fixing device, the second profile and / or the reinforcing piece (is or) are made of steel, aluminum, and / or plastic.

[0026] The invention also relates to a covering surface comprising a covering element, a fastening system as defined above, and a photo module tovoltaique fixed to said roofing element by means of said fixing system.

[0027] The invention will be better understood, and other objects, details, features and advantages thereof will become more apparent from the following description of a particular embodiment of the invention, given solely by way of illustration and not limitation, with reference to the accompanying drawings, in which: - Fig. 1 illustrates a schematic, perspective, three-quarter view of a fastening system according to the invention intended to secure at least one photovoltaic module to a roofing surface; - [[Fig.2]] is a schematic, enlarged, and partial view of an element of the fastening system of [Fig.1]; - [Fig.4] is a schematic, cross-sectional and partial view of the fastening system of [Fig.1]; - [[Fig.4]], [Fig.5] and [Fig.6] are schematic, enlarged, three-quarter perspective views of a fastening device of the system of [Fig.1]; - [Fig.7] illustrates a first variant of the implementation of the fixing device of the system of [Fig.1]; - [Fig.8] illustrates a second variant of the fastening device of the system of [Fig.1]; - [Fig.9] illustrates a third variant of the implementation of the fixing device of the system of [Fig.1]; - the [[Fig.10]] is a schematic, cross-sectional and partial view of a second profile of the fastening system of the [Fig.1].

[0028] In the following description, the term "include" is synonymous with "include" and is not limiting in that it permits the presence of other elements in the vehicle, or the structure to which it relates. It is understood that the term "include" includes the terms "consist of". Furthermore, it should be noted that in the various figures, the same reference numerals designate identical or similar elements.

[0029] In this application, it should be noted that "substantially parallel" means a direction deviating by no more than 20°, or even by no more than 10° or 5°, from a parallel direction. It should also be noted that "substantially orthogonal" means a direction deviating by no more than 20°, or even by no more than 10° or 5°, from an angle of 90°.

[0030] Fig. 1 thus illustrates a schematic, perspective and three-quarter view of a fastening system 1 according to the invention intended to secure at least one photovoltaic module 3, advantageously at least two, to a covering surface 5.

[0031] The photovoltaic module 3 comprises, for example, a photovoltaic panel 3a and a frame 3b in which said photovoltaic panel 3a is arranged or mounted. Said The photovoltaic module 3 may also include a (non-connected) connector, for example cable, plug, micro-inverter, etc., allowing several photovoltaic modules 3 to be connected in parallel and / or in series with each other.

[0032] The covering surface 5 thus defines the upper surface or roof of a building, shade structure, etc., and includes one or more covering elements 7 fixed to a batten (not shown) or to a purlin (not shown).

[0033] The fastening system 1 comprises at least: - a first profile 9, called the base profile, which includes a part 14 arranged to accommodate an edge of the photovoltaic module 3, in particular one of the sides of the frame 3b of said photovoltaic module 3; - a fixing device 11 configured to be fixed, on the one hand, to the cover element 7 and, on the other hand, to the first profile 9.

[0034] Figure 2 is a schematic, partial and enlarged view of the first profile 9, said first profile 9 comprising: - a middle part 13 forming a base 14 arranged to accommodate or cooperate with an edge of the photovoltaic module 3; - two lateral wings 15 extending on each side of the median part 13, and thus extending laterally, on both sides, the median part 13.

[0035] It should be noted that the first profile 9, or base profile, is advantageously monobloc or unitary, and is preferably metallic, for example steel, aluminium, etc. The first profile 9 thus has an elongated shape and, for example, exhibits symmetry with respect to its longitudinal median axis.

[0036] The middle portion 13, for its part, advantageously has, in cross-section, a substantially trapezoidal shape. The trapezoidal middle portion 13 is advantageously open, that is to say that the middle portion is not a closed contour and has an open side 13a, the open side 13a being the side opposite a side 13b on which the base 14 is arranged to receive or cooperate with an edge of the photovoltaic module 3.

[0037] In the mounted position, the open side 13a corresponds to the lower part of the first profile 9, i.e. the part 13a of the first profile 9 oriented towards the cover surface 5, while the side 13b where the base 14 is arranged to accommodate or cooperate with an edge of the photovoltaic module 3 corresponds to the upper part of the first profile 9, i.e. the part of the profile 9 oriented upwards (or opposite the cover surface 5).

[0038] As is particularly visible in [Fig.2] and [Fig.3], the middle part 13 thus comprises several folds, for example crushed; 17 and 19: - a first crushed fold 17, called central fold, which extends substantially in the plane of symmetry of said first profile 9; - at least one second crushed fold 19, called transverse fold, and advantageously at least two second folds 19 which extend on either side of the first fold 17, advantageously said transverse folds extend substantially orthogonally to the plane of symmetry of the first profile 9.

[0039] The central fold 17 and each of the transverse folds 19 thus extend away from the middle part 13, the central fold 17 and each of the transverse folds 19 thus forming substantially a right angle with each other, each association of the central fold 17 with one of the transverse folds 19 being configured to accommodate an edge of the photovoltaic module 3, and thus form a base 14 for reception.

[0040] It should be noted that advantageously, the angle defined between the central fold 17 and one of the transverse folds is advantageously less than 90° (or an acute angle), for example an angle between 80° and 89°, and preferably between 84° and 88°. Thus, in the mounted position of the first profile 9, the transverse folds 19 are configured to be oriented upwards, facilitating the flow of water (rain, humidity, etc.) towards the angle defined by said folds 17 and 19 and its evacuation either through one of the open longitudinal ends of said first profile 9, or through a water evacuation hole (provided for this purpose).

[0041] Each of the lateral wings 15, for its part, also comprises a base 15a and a return 15b extending said base. In the mounted position, said base 15a of each of the wings 15 extends in a plane substantially parallel to the plane of the transverse folds 19, while the return 15b is oriented away from the median part 13 and upwards.

[0042] Each of the wings 15 and a portion of the middle part 13 thus form a gutter to collect the water and evacuate it, either by providing an evacuation hole (not visible) at the level of the base 15a of each of the wings 15, or by gravity, the gutter having a slope in the raised position, the water being evacuated at the level of one of the ends of the first profile 9 (directly through the end and / or via an evacuation hole).

[0043] As illustrated more particularly in [[Fig.4]] to [Fig.6], the fastening device 11 comprises several separate parts: - a first part 21, called the main part, which includes two fixing tabs 22 configured so that each one is fixed to one of the lateral wings 15 of the first profile 9; - at least two additional fixing pieces 23 and 25 configured to secure the main part of the fixing device 11 to a cover element 7.

[0044] More particularly, the main part 21 of the fastening device includes a main body 27 which has, for example, an elongated shape and each of whose opposite ends terminates in one of said fastening tabs 22.

[0045] Said fixing tabs 22 are advantageously flexible or deformable and have at their free end a hook 22a configured to cooperate with the lateral wing 15 of the first profile 9, for example at the return 15b of said wing 15. Advantageously, the return 15a of each of the wings 15 has a notch 15c configured to receive the hook 22a of the fixing tab 22.

[0046] The main body 27 also includes a through opening 27a intended to be positioned opposite an opening made in the cover element 5 on which the first profile 9 is to be fixed. The additional fixing pieces 23 and 25 form a tenon-mortise type assembly.

[0047] More particularly, the first complementary fixing piece 23 has an end 23a in which an opening 23b is provided, acting as a mortise, said end 23a being configured to fit through the openings (opposite) provided in the main body 27 and the cover element 5.

[0048] The second complementary fixing piece 25 is configured to fit into the opening 23b of the first complementary fixing piece 23. Said second complementary fixing piece 25 advantageously includes a protrusion 25a acting as a tenon.

[0049] The opening 23b of the first complementary fixing piece 23 has, for example, an elongated shape, such as a slot shape, while the protrusion 25a of the second complementary fixing piece 25 also has an elongated shape, such as a tongue shape.

[0050] Once the end 23a of the first complementary fixing piece 23 is inserted into said openings of the main body 27 and the cover element 7, said end 23a and the opening 23b protrude from the main body 27. The second complementary fixing piece 25, more particularly the protrusion 25a, is then inserted into the opening 23b of the first complementary fixing piece 23.

[0051] The protrusion 25a can be forced into the opening 23b, but the second complementary fixing piece 25 can also include a stop 25b arranged on either side of the protrusion 25a configured to bear against the first complementary fixing piece 23 and thus stop the insertion movement of the protrusion 25a into the opening 23b.

[0052] Figures [7] and [8] illustrate alternative embodiments of the fastening device 11 of [Fig.4] to [Fig.6]. In particular, [Fig.7] illustrates a schematic, partial, cross-sectional view of a first alternative embodiment of a fastening device 11.

[0053] Unlike the fastening device 11, the fastening device 111 comprises a main part 211 and at least one fastening member 24 of the rivet or clip type, by example by pressure and / or by force fitting. Thus, the main room 211 includes a main body 271 in which one or more openings (preferably at least two) are arranged, configured to be positioned opposite openings arranged in the roofing element 7.

[0054] Said fastening members 24 are thus configured to be inserted through the respective openings of the main part 211 and the cover element 7 by hand (therefore without tools), and thus to secure the fastening device 111 to the cover element 7.

[0055] It will be noted that said fastening members 24 of the rivet or clip type, for example pressure-fit and / or press-fit, are advantageously made of plastic, these being required to deform during their insertion before returning to position and blocking any removal of said member 24 from said openings of the main part 211 and of the cover element 7.

[0056] Fig. 8, for its part, illustrates a schematic, partial and cross-sectional view of a second variant embodiment of a fastening device 11”. The fastening device 112 of Fig. 8 thus comprises, unlike the device 11, a main part 212 and at least one fastening member 26 of the rack type, for example of substantially triangular shape, and preferably at least two rack-type members 26.

[0057] Thus, the main part 212 comprises a main body 272 in which are fitted with one or more openings (preferably at least two) configured to be positioned opposite openings fitted in the roofing element 7.

[0058] Said fastening members 26 are thus configured to be inserted through the respective openings of the main part 212 and the cover element 7 by hand (therefore without tools), and thus to secure the fastening device 112 to the cover element 7.

[0059] Fig. 9, for its part, illustrates a schematic, partial and cross-sectional view of a third variant embodiment of a fastening device 113. The fastening device 113 of Fig. 9 thus comprises, unlike device 11, a single main part 213.

[0060] Said main part 213 comprises a main body 273 on which are arranged hooks 28, or protrusions, configured to cooperate with one or more openings arranged in said at least one cover element 7.

[0061] In the mounted position, said hooks 29 ensure the mechanical connection between the cover element 7 and the base profile 9, being itself fixed to said cover element 7 by mechanical cooperation, for example by insertion or interlocking. hooks in the openings provided in said roofing element 7.

[0062] As is particularly visible in [Fig. 1], the fastening system 1 also advantageously includes one or more clips 29 (or clamps) configured to secure a part of the first profile 9 to a part of at least one photovoltaic module 3, here said frame 3b of said module 3.

[0063] The clip or clamp 29 is thus configured to clamp together a part of the first profile 9, for example at one of the transverse folds 19. Said clip 29 has, for example, a substantially U-shaped form, each arm of the U being positioned respectively against the frame 3b of the module 3 and against the transverse fold 19. In the mounted position of the clip 29, each of said arms of the clip 29 blocks any relative movement by friction and / or by snapping, of a part of the clip 29 in a complementary shape, between the photovoltaic module 3 and the first profile 9.

[0064] Said clip 29 is for example made of plastic or metal, as long as it is able to deform when inserted on the first profile 9 and the frame 3b of the module 3, and then to exert, once in the mounted position, a force (or pressure) against said elements 9 and 3b, thus securing the photovoltaic module to the first profile 9.

[0065] The clip 29 may also include projections (not shown), for example pointed, configured so that, in the mounted position, said projections will grip the frame 3b of the photovoltaic module 3 and the first profile 9, thus enabling the frame 3b to be grounded. Said projections of the clip 29 are advantageously arranged on the faces of the clip 29 intended to be located opposite the frame 3b of the module 3 and the first profile 9 (and more particularly one of said transverse folds 17).

[0066] Said fastening system 1 includes a reinforcing piece 31, more particularly visible in [Fig.3], configured to cooperate mechanically with the first profile 9, said reinforcing piece 31 being, in mounted position, arranged transversely to the longitudinal axis of said first profile 9.

[0067] The reinforcing piece 31 has an elongated shape, and is for example a metal profile, one of whose longitudinal ends 31a is configured to cooperate mechanically with the first profile 9, for example with an opening 17a arranged in one of the transverse folds 17, in particular at the level of the upper part of said transverse fold 17.

[0068] More specifically, the end 31a of the reinforcing piece 31 includes a projection 31b intended to be inserted into the opening 17a and to cooperate mechanically with said opening 17a. The other end (not shown) of said reinforcing piece 31 may be similar or identical to the end 31a and cooperate with another first profile 9, or have a distinct structure and cooperate with an element of cover 7.

[0069] Said reinforcement piece 31 is configured to be fixed by snap-fit ​​and / or tenon-mortise assembly to said first profile 9. Advantageously, the reinforcement piece 31 comprises, at each of its longitudinal ends, a projection or protuberance configured to cooperate mechanically, snap-fit ​​and / or tenon-mortise assembly, with an opening provided in said first profile 9.

[0070] Thus, in the mounted position, the reinforcement piece 31, in particular one of its longitudinal faces, extends in relation to one of the sides of at least one of the photovoltaic modules 3, and can for example be in support and / or in mechanical cooperation with the frame 3b of a module 3.

[0071] The reinforcing piece 31 is therefore advantageously fixed near or in mechanical cooperation with one of the free edges of said at least one photovoltaic module 3. Furthermore, the reinforcing piece 31 is preferably mounted at the longitudinal ends of the first profiles 9, advantageously at the end with the lowest altitude (or at the bottom of the slope of the covering surface 5), in order to lock the position of said modules 3 before they are secured to the first profile 9 by means of one or more clips 29.

[0072] Fig. 10 illustrates a schematic, partial, cross-sectional view of a fastening system 1 according to the invention which includes a second profile 35 configured to join together two adjacent photovoltaic modules 3.

[0073] The second profile 35 allows two adjacent or side-by-side photovoltaic modules 3 to be joined longitudinally or transversely, thus reinforcing the mechanical strength of the assembly formed by one or two fixing systems 1, as well as several photovoltaic modules 3.

[0074] Said second profile 35, also referred to as angle bracket, is in particular configured to fit together by elastic deformation astride at least two photovoltaic modules 3, more particularly by resting on the frames 3b of each of said modules 3.

[0075] The second profile 35 thus comprises a central part 35a configured to deform, for example by having substantially a W shape, extended at each of its ends by a hooked part 35b and 35c. Each of the hooked ends 35b and 35c can have a different shape, in particular because one of the hook shapes is easier to mount first on the frame 3b of a module compared to the other.

[0076] Thus, when fixing the second profile 35 onto photovoltaic modules 3, the hooked end 35b of the second profile 35 hooks (or cooperates mechanically) on the edge of the frame 3b, then by deformation of the central part 35a, the other hooked end 35c hooks onto the frame 3b of the other module 3. Thus, once fixed (or in mounted position) the second profile 35 cooperates with the two adjacent photovoltaic modules 3, in particular through the ends 35b and 35c which mechanically cooperate with each of the edges of the frame 3b of each of said modules 3.

[0077] It should be noted that the second profile 35 and / or the reinforcing piece 31 are advantageously one-piece or unitary. The second profile 35 and / or the reinforcing piece 31 (is or) are, for example, made of steel, aluminum, and / or plastic.

Claims

Claims

1. System for fixing at least one photovoltaic module on a covering surface comprising at least one covering element, said system comprising at least: - a first profile, called a base profile, which comprises: a middle part forming a base arranged to accommodate an edge of a photovoltaic module and two lateral wings extending on each side of the middle part; - a fixing device configured to be fixed on at least one covering element and which comprises two fixing lugs each being fixed to one of the lateral wings of the first profile.

2. Fastening system according to the preceding claim, characterized in that said fastening device comprises hooks configured to cooperate with one or more openings provided in said at least one covering element.

3. Fastening system according to claim 1, characterized in that said fastening device is configured to be fastened via at least one opening provided in said at least one covering element and two complementary parts forming a tenon-mortise type assembly.

4. Fixing system according to any one of the preceding claims, characterized in that said system comprises at least one clip configured to secure a part of the first profile to a part of said at least one photovoltaic module.

5. Fixing system according to the preceding claim, characterized in that said clip is configured to fix the first profile to a photovoltaic module by friction and / or by snap-fastening.

6. Fastening system according to any one of the preceding claims, characterized in that said fastening system comprises a reinforcing piece configured to cooperate mechanically with the first profile, transversely to the longitudinal axis of said first profile.

7. Fastening system according to the preceding claim, characterized in that said reinforcing piece is configured to be fixed by snap-fastening and / or a tenon-mortise assembly to said first profile.

8. Fixing system according to the preceding claim, characterized in that said fixing system comprises a second profile, called angle iron, configured to secure two adjacent photovoltaic modules together.

9. Fixing system according to the preceding claim, characterized in that said second profile is configured to fit by elastic deformation across at least two photovoltaic modules.

10. Fixing system according to any one of the preceding claims, characterized in that said middle part and the lateral wings have a substantially trapezoidal shape.

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