SOLAR MODULE HOLDING DEVICE

Description

State of the art

[0001] The invention relates to a solar module holding device for erecting bifacial solar modules, a cover element for the solar module holding device, a solar module device with the solar module holding device and a method for producing the cover element.

[0002] Solar module holding devices for erecting bifacial solar modules, having at least one carrier unit, wherein the carrier unit comprises at least one carrier shaft which is intended to carry at least one bifacial solar module arranged on an imaginary mounting plane, wherein the carrier shaft is arranged at least substantially parallel to the mounting plane, and having at least one reflection unit for reflecting incident light onto a side facing the carrier shaft of a bifacial solar module carried via the carrier shaft on the imaginary mounting plane, have already been proposed in the document WO2020006575 A1.

[0003] The object of the invention is, in particular, to provide a generic device with improved properties in terms of low manufacturing costs, advantageously high modularity, and high robustness and durability. This object is achieved according to the invention by the features of patent claim 1, while advantageous embodiments and further developments of the invention can be found in the subclaims. Advantages of the invention

[0004] The invention is based on a solar module holding device according to claim 1, for setting up bifacial solar modules, with at least one support unit, wherein the support unit comprises at least one support shaft which is intended to support at least one bifacial solar module arranged on an imaginary mounting plane, wherein the support shaft is arranged at least substantially parallel to the mounting plane, and with at least one reflection unit for reflecting incident light onto a side facing the support shaft of a bifacial solar module carried via the support shaft on the imaginary mounting plane.

[0005] It is proposed that the reflection unit comprises at least one cover element which has at least one reflection surface and is formed separately from the support shaft, wherein the cover element is provided to be fastened in a vicinity of the support shaft, wherein the cover element is provided to cover at least one outer surface of the support shaft in at least one mounted state of the cover element.

[0006] The solar module holding device is intended for mounting bifacial solar modules at a specific angle and with a specific orientation relative to a substrate. It is conceivable that the support shaft is designed to be rotatable about an axis, with the solar modules, in particular, being designed to be rotatable about the axis via the support shaft. "Intended" is to be understood in particular as specifically designed and / or specially equipped. The fact that an object is intended for a specific function is to be understood in particular as meaning that the object fulfills and / or performs this specific function in at least one application and / or operating state. Preferably, the solar module holding device, in particular the support unit, comprises at least one support intended to arrange the support shaft at a distance from the substrate.The support shaft is preferably designed to be arranged obliquely or at least substantially parallel to the substrate and / or a horizontal line. "Substantially parallel" is understood to mean, in particular, an alignment of a straight line, a plane, or a direction, in particular a straight line encompassing a longitudinal axis of the support shaft, relative to another straight line, another plane, or a reference direction, in particular a plane spanned by the substrate and / or the horizontal line, wherein the straight line, the plane, or the direction has a deviation of, in particular, less than 8°, advantageously less than 5°, and particularly advantageously less than 2°, relative to the other straight line, the other plane, or the reference direction, in particular viewed within at least one projection plane.The solar module holding device is preferably designed to arrange the solar modules to be installed on the imaginary mounting plane, wherein the solar modules are preferably attached to the support shaft directly or via fastening means of the support unit. The mounting plane is preferably arranged at least substantially parallel to the longitudinal axis of the support shaft.

[0007] The support shaft preferably has a rod-shaped basic shape. It is conceivable that the support shaft has a substantially round, in particular circular or elliptical, or an angular, in particular square or hexagonal, cross-sectional area at least substantially perpendicular to the longitudinal axis of the support shaft. "Substantially perpendicular" is understood in particular to mean an orientation of a straight line, a plane, or a direction relative to another straight line, another plane, or a reference direction, wherein the straight line, the plane, or the direction and the other straight line, the other plane, or the reference direction, in particular viewed in a projection plane, form an angle of 90° with a maximum deviation of in particular less than 8°, advantageously less than 5°, and particularly advantageously less than 2°. In particular, corners of an angular cross-sectional area are rounded or chamfered.The support shaft is preferably hollow, at least in sections. The support shaft is preferably made of a metal, for example, sheet steel, aluminum, or the like. Bifacial solar modules are particularly designed to utilize light incident on two side surfaces of the solar modules to generate energy. In particular, the two side surfaces of bifacial solar modules positioned via the solar module holding device are aligned at least substantially parallel to the mounting plane. Preferably, one side surface of each bifacial solar module positioned via the solar module holding device faces the support shaft and / or the reflection unit, in particular the cover element.

[0008] The solar module holding device is preferably designed such that bifacial solar modules and / or solar cells of a bifacial solar module positioned over the solar module holding device delimit at least one gap which extends at least substantially parallel to the longitudinal axis of the support shaft. The at least one gap preferably extends in or on the mounting plane. The at least one gap has a main extent which extends in particular at least substantially parallel to the longitudinal axis of the support shaft. An imaginary plane comprising the longitudinal axis of the support shaft and extending through the gap preferably forms an angle of at least substantially 90° with the mounting plane, wherein in particular the angle has a maximum deviation of at most 8°, preferably at most 5°, and more preferably at most 3°.Preferably, the imaginary plane encompassing the longitudinal axis of the support shaft and extending through the gap encompasses the main extent of the gap and / or is aligned parallel to the main extent of the gap. Preferably, the at least one gap is provided to allow light incident at least substantially perpendicular to the mounting plane to pass through the mounting plane onto the reflection unit, in particular the cover element. It is conceivable for the gap to be formed by separately formed solar modules or by a solar module through a light-permeable region between solar cells of the solar module, wherein in particular no feedthrough for solid bodies is formed within the solar module.

[0009] The reflection unit is preferably formed by the at least one cover element. It is conceivable for the reflection unit to have a plurality of cover elements arranged one behind the other, viewed along the support shaft. The at least one cover element is in particular formed in one piece. The cover element is intended to be arranged, in particular fastened, to the support unit, in particular the support shaft. A "near region of the support shaft" is to be understood in particular as an area that extends around the support shaft within a minimum distance of at most 30 cm, preferably at most 20 cm, and more preferably at most 10 cm. The cover element is particularly preferably intended to be fastened directly to the support shaft.Alternatively, it is conceivable that the cover element is provided to be fastened to fastening elements of the carrier unit, which are provided in particular for fastening solar modules to the carrier shaft, or to another component of the carrier unit. In particular, the cover element is fastened in the mounted state in the vicinity of the carrier shaft, in particular to the carrier unit or the carrier shaft. The outer surface of the carrier shaft that is to be covered / covered by the cover element is preferably arranged on an outer side of the carrier shaft facing the mounting plane and / or a solar module held by the carrier unit. The at least one reflective surface of the cover element is provided to be arranged in particular between solar modules orthrough the gap between solar modules, to reflect incident light onto the side of a bifacial solar module supported above the support shaft on the imaginary mounting plane, facing the support shaft. The term "the cover element is formed separately from the support shaft" is to be understood in particular to mean that the cover element and the support shaft are formed as two separate components and are preferably not formed as a single piece.

[0010] The cover element is preferably provided to conceal at least 50%, preferably at least 60%, and preferably at least 65% of a visible surface of the support shaft, viewed perpendicular to the longitudinal axis or a central axis of the support shaft, preferably viewed perpendicular to the mounting plane from the mounting plane. The cover element preferably has a maximum transverse extent that extends in particular perpendicular to a longitudinal axis of the cover element, wherein the maximum transverse extent of the cover element corresponds to at least 50%, preferably at least 60%, and preferably at least 65%, of a maximum transverse extent of the support shaft, which extends in particular perpendicular to the longitudinal axis of the support shaft and / or parallel to the maximum transverse extent of the cover element.In particular, the maximum transverse extent of the cover element, which extends in particular perpendicular to the longitudinal axis of the cover element, is at least 5 cm, preferably at least 10 cm and preferably at least 12 cm.

[0011] The inventive design of the solar module holding device makes it possible to achieve an advantageously high level of modularity, in particular because the reflection unit can advantageously be mounted and / or dismantled independently of the design of the support shaft. Advantageously low manufacturing costs can be achieved, in particular because the design of the support shaft can be retained for devices with and without a reflection unit. Advantageously simple and rapid assembly of the solar module holding device can be enabled, in particular compared to a one-piece design of the support shaft and the reflection unit, preferably because when mounting the support shaft there is no need to ensure the protection of reflective surfaces. The reflection unit can advantageously be mounted after mounting the support shaft and / or after mounting the solar modules.By arranging the reflection unit in the vicinity of the support shaft or on the support shaft, an advantageously compact design of the solar module holding device can be achieved.

[0012] It is further proposed that the cover element is provided so that, in the mounted state, it can be applied at least partially flatly to the support shaft. This can enable an advantageously compact design. Deposits of or sticking of foreign bodies on the solar module holding device, in particular between the support shaft and the cover element, can advantageously be prevented. An advantageously fluid-tight transition between the cover element and the support shaft can be enabled. The cover element preferably forms at least one fastening region, wherein the cover element is provided so as to be applied to the support shaft via the fastening region. The at least one fastening region is preferably arranged on a side of the cover element facing away from the reflective surface.The cover element preferably forms two fastening regions, which, viewed along the longitudinal axis of the cover element, are arranged at two mutually opposite ends of the cover element. The cover element is preferably at least substantially elongated. "Substantially elongated" is understood to mean, in particular, a component, in particular the cover element, whose maximum longitudinal extent corresponds to at least 4 times, preferably at least 6 times, and preferably at least 8 times, a maximum transverse extent of the component oriented perpendicular to the maximum longitudinal extent. In particular, the longitudinal axis of the cover element extends parallel to the maximum longitudinal extent of the cover element. In particular, the maximum longitudinal extent of the cover element is at least 20 cm, preferably at least 30 cm, and preferably at least 40 cm.The maximum longitudinal extent of the cover element is preferably selected depending on a region of the support shaft that is free of fastening elements. The fastening regions are preferably formed by two contact surfaces of the cover element that at least partially face each other. The contact surface(s) of the cover element that form the fastening region(s) are preferably at least substantially planar. "Substantially planar" is to be understood in particular as a surface, in particular the inner surface(s), that extends at least 95%, preferably at least 97%, and preferably at least 99% within one plane, particularly taking into account manufacturing tolerances caused by a method for producing the surface or a component having the surface. The cover element is preferably designed to be applied flatly to the support shaft via the contact surface(s).

[0013] It is also proposed that the cover element is provided, in the assembled state, together with the support shaft, to delimit at least one passage. This can advantageously achieve a high level of functionality for the cover element. Advantageously good heat dissipation can be enabled, preferably separately from components of the solar module holding device that are guided through the support shaft or arranged in the support shaft. The passage is preferably delimited by an inner side of the cover element and an / the outer surface of the support shaft. The passage preferably extends at least substantially parallel to the longitudinal axis of the cover element and / or the support shaft. The passage is preferably designed to be at least substantially completely closed when viewed in at least one sectional plane oriented perpendicular to the longitudinal axis of the cover element and / or the support shaft.Preferably, the feedthrough extends at least substantially completely over a maximum longitudinal extent of the cover element. Preferably, the feedthrough is designed to be at least substantially completely closed along a maximum longitudinal extent of the feedthrough and / or along the maximum longitudinal extent of the cover element, in particular when viewed along the longitudinal extent in each case. Alternatively, it is conceivable for the cover element to delimit recesses which form openings to the feedthrough. Alternatively or additionally, it is conceivable for the cover element to be provided to make the feedthrough at least partially open along the maximum longitudinal extent of the cover element and / or the feedthrough, in particular on an underside of the feedthrough.

[0014] It is further proposed that the cover element is provided to at least partially accommodate cables running on the support shaft, which are provided in particular for connecting at least one bifacial solar module, via the feedthrough. This can enable advantageously simple and rapid assembly of the solar module holding device, in particular because the cables can be guided in a protected manner outside the support shaft. Advantageously high protection of the cables can be enabled, in particular at the same time as guiding the cables outside the support shaft. Preferably, the cover element is provided to accommodate the cables over the maximum longitudinal extent of the cover element, wherein in particular the cables are arranged within the feedthrough over the maximum longitudinal extent of the cover element.

[0015] Furthermore, it is proposed that the reflection unit, in particular the cover element, and / or the support shaft has / have at least one holding means which is intended to fix cables within the feedthrough. An advantageous arrangement of the cables relative to an inner surface of the cover element delimiting the feedthrough and / or relative to an outer surface of the support shaft delimiting the feedthrough can be ensured. Spacing of the cables from the heating cover element can advantageously be easily achieved. An advantageously simple and rapid assembly of the solar module holding device can be enabled, in particular since the cables can be fixed before assembly of the cover element.In particular, if the reflection unit has the at least one holding means, the at least one holding means is preferably formed integrally with the cover element and / or is integrally connected to the cover element. It is conceivable for the at least one holding means to be arranged on the support shaft or the cover element. For example, the at least one holding means is designed as a tab, a hook, a hook-and-loop connection element, a clamp, a clip, or the like. Preferably, the cable(s) can be fixed and / or released without tools via the at least one holding means. It is conceivable for the reflection unit, in particular the cover element, and / or the support shaft to have a plurality of holding means. In particular, the holding means are arranged distributed along the longitudinal extent of the cover element and / or the feedthrough.Alternatively or additionally, it is conceivable that at least two holding means are arranged next to one another along the longitudinal extent of the cover element and / or the feedthrough. It is conceivable that both the reflection unit, in particular the cover element, and the support shaft have holding means. Alternatively, it is conceivable that the solar module holding device, in particular the reflection unit, the cover element and / or the support shaft, does not comprise any holding means, wherein in particular the cables are guided loosely. In particular, the cover element has no extensions or the like on an inner surface delimiting the feedthrough.

[0016] It is also proposed that the cover element have at least one rounded and / or bent edge on at least one end of the cover element formed along a maximum longitudinal extent and / or the longitudinal axis of the cover element. This can advantageously achieve a routing of the cables out of the feedthrough or into the feedthrough via the cover element. Unintentional damage to the cables on an edge of the cover element, which is in particular formed from a metal, can advantageously be prevented. An advantageously simple and secure installation of the solar module holding device can be achieved. In particular, an advantageously simple and quick pulling of cables through the feedthrough delimited by the cover element can be enabled, in particular even after installation of the cover element. Additional protective elements or the like for protecting the cables can advantageously be omitted.This advantageously enables low manufacturing costs. The rounded and / or bent edge of the cover element preferably extends at least largely, in particular at least substantially completely, over a maximum transverse extent of the inner surface of the cover element that delimits the passage, which inner surface is in particular oriented at least substantially perpendicular to the longitudinal axis of the cover element. The cover element preferably has at least one rounded and / or bent edge at each of two ends of the cover element formed along a maximum longitudinal extent and / or the longitudinal axis of the cover element.

[0017] It is further proposed that the support unit comprise at least two fastening elements for fastening at least one bifacial solar module to the support shaft, wherein the two fastening elements are intended to be arranged at a distance from one another along the support shaft and to jointly fasten at least one bifacial solar module to the support shaft, wherein the at least one cover element has a maximum longitudinal extent, in particular the aforementioned maximum longitudinal extent, which corresponds to at least 50%, preferably at least 70%, and preferably at least 80%, of a minimum distance between the two fastening elements. An advantageously high proportion of radiation penetrating the solar modules can be reflected via the reflection unit onto the rear side of the solar modules. Preferably, the cables can be substantially completely protected by the cover element over a distance between the solar modules.In particular, the minimum distance between the two fastening elements extends at least substantially parallel to the longitudinal axis of the support shaft and / or the cover element. It is conceivable for the support unit to comprise a plurality of fastening elements which are arranged one behind the other on the support shaft, in particular as viewed along the longitudinal axis of the support shaft. Preferably, at least one cover element is arranged between each two of the fastening elements. Alternatively or additionally, it is conceivable for the reflection unit to comprise a plurality of cover elements arranged between the two or two of the fastening elements. Preferably, a common maximum longitudinal extent of the plurality of cover elements, which are arranged in particular between the two or two of the fastening elements, is at least 50%, preferably at least 70% and preferably at least 80% of the minimum distance between the two fastening elements.

[0018] Furthermore, it is proposed that the cover element have at least two reflection surfaces, wherein the main extension planes of the two reflection surfaces are arranged at an angle of at least 45°, preferably at least 60°, and more preferably at least 70°, to one another. An advantageously high proportion of radiation passing through the solar modules can be reflected onto the rear side of the solar modules via the reflection unit arranged on the support shaft. The angle preferably extends at least substantially perpendicular to the longitudinal axis of the cover element. Preferably, the two reflection planes each extend at least substantially completely over the maximum longitudinal extension of the cover element.A "main extension plane" of a structural unit, in particular of the individual reflection surfaces, is to be understood in particular as a plane which is parallel to a largest side surface of a smallest imaginary cuboid which just completely encloses the structural unit and in particular runs through the center of the cuboid.

[0019] It is also proposed that the cover element have at least two at least substantially planar reflection surfaces, in particular the two aforementioned reflection surfaces, which are arranged at an angle to one another. This enables an advantageously simple and cost-effective design of the cover element. Advantageously simple treatment or production of the reflection surfaces is possible, in particular in order to simultaneously achieve advantageously high reflectivity. Alternatively, it is conceivable for the cover element to form only one curved reflection surface. In particular, the cover element forms at least one intermediate region between the two reflection surfaces, which is curved, designed as a bevel, or as an edge. The two reflection surfaces are preferably arranged adjacent to one another via the intermediate region.

[0020] It is further proposed that the cover element, in the mounted state, extends along a main extension axis of the support shaft by at least 40°, preferably at least 50°, and preferably at least 60°, around the main extension axis of the support shaft. An advantageously high proportion of radiation passing through the solar modules can be reflected onto the rear side of the solar modules via the reflection unit arranged on the support shaft. This allows for an advantageously large feedthrough. A "main extension axis" of an object, in particular of the support shaft, is understood to mean, in particular, an axis that runs parallel to a longest edge of a smallest geometric cuboid that just completely encloses the object.Preferably, the cover element has, viewed along the longitudinal axis of the cover element, a maximum transverse extent that is at least substantially constant, in particular extending perpendicular to the longitudinal axis.

[0021] It is further proposed that the solar module holding device comprise at least one fastening means for fastening the cover element to the support shaft, wherein the at least one fastening means is provided for a snap-in connection. This can advantageously enable tool-free assembly, disassembly, and maintenance of the reflection unit, in particular of the cover element. This can advantageously enable simple and rapid assembly, disassembly, and maintenance of the reflection unit, in particular of the cover element. This can advantageously achieve low assembly and / or maintenance costs. For example, the at least one fastening means is designed as a clamp. Preferably, the cover element and the support shaft each delimit at least one recess for fastening by the fastening means.Preferably, the at least one fastening means is provided to be guided through at least one recess in the support shaft and / or the cover element for fastening the cover element. Preferably, the at least one fastening means is provided to fasten the cover element to the support shaft by clamping the fastening means. Alternatively or additionally, it is conceivable for the solar module holding device to comprise at least one fastening means or a plurality of fastening means for fastening the cover element to the support shaft, wherein in particular the fastening means is / are each designed differently from a locking element. For example, the fastening means is / are provided for a screw and / or press connection. For example, the fastening means is / are designed as screws, rivets or the like.Alternatively or additionally, it is conceivable for the fastening means(s) to be attached to the cover element or the support shaft, to be integrally connected thereto, and / or to be formed integrally therewith. For example, the support shaft defines a plurality of recesses, wherein the cover element forms a plurality of fastening means that are intended to be pressed through the recesses of the support shaft for mounting the cover element on the support shaft.

[0022] It is also proposed that the solar module holding device comprise at least one fastening means, in particular the aforementioned one, for fastening the cover element to the support shaft, wherein the at least one fastening means is intended to be arranged outside the feedthrough for fastening the cover element to the support shaft. Components and / or cables arranged within the feedthrough can advantageously be well protected during assembly of the cover element. An advantageously fluid-tight design of the feedthrough can be achieved. Unintentional penetration of foreign bodies and / or water into the feedthrough at an angle to a longitudinal extent of the feedthrough can advantageously be prevented, in particular since fastening points, which may have gaps, are arranged at a distance from the feedthrough.Preferably, the recesses defined by the cover element and / or the fastening means(s) are arranged within the fastening region(s) of the cover element. Preferably, the recesses defined by the cover element and / or the fastening means(s) are arranged at a distance from the passage or from the inner surface of the cover element defining the passage. Preferably, the recess(es) defined by the support shaft are arranged at a distance from the passage or from the outer surface of the support shaft defining the passage.

[0023] Furthermore, it is proposed that the solar module holding device comprises at least one fastening means for fastening the cover element to the support shaft by means of a clamping and / or snap-in connection, wherein the fastening means is provided to at least largely enclose the support shaft for fastening the cover element along a longitudinal axis, in particular the aforementioned longitudinal axis, of the support shaft, viewed around the longitudinal axis. An advantageously small number of fastening means for fastening the cover element to the support shaft can be achieved. This advantageously enables low manufacturing costs and advantageously rapid assembly, maintenance and / or disassembly of the cover element. An advantageously simple and cost-effective design of the cover element and the support shaft can be enabled, preferably without recesses and / or passages for fastening means.Preferably, the fastening means is provided, in particular for fastening the cover element to the support shaft, to at least partially encompass the cover element, in particular in the fastening region(s). When fastened to the support shaft, the fastening means preferably extends along the longitudinal axis of the support shaft, viewed in a state fastened to the support shaft, in particular to at least largely enclose the support shaft, over an angular range of at least 180°, preferably at least 200° and preferably at least 220°, around the longitudinal axis of the support element. Preferably, the fastening means is formed from a wire, in particular as a spring wire, or from a sheet metal strip. In particular, the fastening means is formed from a metal, in particular steel or stainless steel. Preferably, the fastening means is clamp-shaped.The fastening means is preferably provided to be connected to the support shaft in a force-fitting and / or form-fitting manner for the clamping and / or locking connection. In particular, the fastening means is provided to be applied to an outer wall and / or an outer surface of the support shaft for the clamping and / or locking connection to the support shaft, which is in particular designed at a distance from the support surface of the support shaft. The fastening means is preferably provided to engage behind the support shaft via at least two outer surfaces facing away from the cover element, which is in particular arranged on the support shaft, for the clamping and / or locking connection to the support shaft. It is conceivable for the fastening means to have at least one reflective surface, which is arranged on a side of the fastening means facing away from the support shaft, in particular when fastened to the support shaft.Alternatively or additionally, it is conceivable that the at least one fastening means, in particular when mounted on the support shaft, is held in a form-fitting manner on the cover element, in particular against movement parallel to the longitudinal axis(es) of the cover element and / or the support shaft along the cover element. For example, it is conceivable that the cover element delimits recesses, such as in particular guide depressions or the like, wherein in particular the fastening means, in the state mounted on the support shaft, is at least partially arranged in at least one of the recesses. In particular, these recesses each extend at least substantially perpendicular to the longitudinal axis of the cover element. Preferably, the recesses are each arranged on an outer side of the cover element facing away from the support shaft.

[0024] It is also proposed that the solar module holding device comprise at least one fastening means, in particular the aforementioned one, for fastening the cover element to the support shaft by means of a clamping and / or snap-in connection, wherein the fastening means is provided to encompass the cover element over a maximum transverse extent of the cover element, in particular the aforementioned maximum transverse extent, of the cover element, in particular the reflective surface. This can enable an advantageously secure fastening of the cover element to the support shaft. In particular, the fastening means is provided to completely encompass the cover element over the maximum transverse extent of the cover element. The fastening means is preferably provided to be applied to the cover element on an outer surface of the cover element facing the mounting plane, in particular over the maximum transverse extent of the cover element.The solar module holding device preferably comprises at least two, in particular exactly two, fastening means for each cover element of the reflection unit to be fastened to the support shaft. The fastening means for fastening the cover element to the support shaft are preferably arranged in an end region of the cover element formed along the longitudinal axis of the cover element. The fastening means preferably bears against the at least one reflective surface of the cover element. When fastened to the support shaft, the fastening means preferably extends over the two fastening regions, the reflective surfaces, and the intermediate region of the cover element. The fastening means preferably has a maximum width of at most 2 cm, preferably at most 1 cm, preferably at most 0.5 cm, and most preferably at most 0.3 cm.In particular, the maximum width of the fastening means extends at least substantially perpendicular to the longitudinal axis of the cover element and / or the support shaft when the fastening means is arranged for fastening the cover element to the support shaft. The maximum width of the fastening means can enable advantageously low coverage of the reflective surface(s) and thus advantageously high reflected radiation for energy generation. Alternatively, it is conceivable for the fastening means to be provided to be arranged on the support shaft from a side of the support shaft facing away from the cover element. In particular, in the alternative embodiment, the fastening means is provided to encompass the cover element only in an edge region and / or, in particular, the aforementioned fastening region, in particular only over part of the maximum transverse extent of the cover element.

[0025] It is further proposed that the cover element be formed from a single sheet metal part. This allows an advantageously simple and cost-effective design of the cover element to be achieved. An advantageously one-piece design of the reflection unit, in particular of the cover element, can be enabled. Preferably, the cover element is formed from a metal, in particular sheet steel. Alternatively, it is conceivable that the cover element is formed from a material other than metal, for example from a plastic. In particular, it is conceivable that the cover element has a metallic coating and / or metal inserts in a region of the reflective surfaces.

[0026] Furthermore, it is proposed that the reflective surface be polished, in particular highly polished. This allows for an advantageously high reflectivity of the cover element, in particular of the reflective surface. As a result, an advantageously high proportion of radiation passing through the solar modules can be reflected onto the rear side of the solar modules via the reflection unit arranged on the support shaft. Preferably, in an embodiment of the cover element made of a metal or a sheet metal part, the cover element is polished, in particular highly polished, in a region of the reflective surface(s).

[0027] It is also proposed that the cover element has at least one reflective coating on the reflective surface. This can enable an advantageously high reflectivity of the cover element, in particular of the reflective surface. As a result, an advantageously high proportion of radiation penetrating the solar modules can be reflected via the reflection unit arranged on the support shaft onto the back of the solar modules. For example, the reflective coating is designed as a metallic layer, for example made of silver, aluminum, gold or the like, or as a mirror. It is conceivable that the cover element has at least one protective layer in the region of the reflective surface and / or on the reflective coating, for example a dielectric layer, a particularly transparent varnish or the like.

[0028] In addition, a cover element, in particular the one mentioned above, for a solar module holding device according to the invention is proposed.

[0029] The inventive design of the reflection unit allows for advantageously high modularity, particularly since the reflection unit can advantageously be assembled and / or disassembled independently of the design of a support shaft. Advantageously low manufacturing costs can be achieved, particularly since the design of the support shaft can be retained for devices with and without a reflection unit. Advantageously simple and rapid assembly of the reflection unit can be enabled. The assembly of the reflection unit can advantageously take place after assembly of the support shaft and / or after assembly of the solar modules.

[0030] In addition, a solar module device with at least one bifacial solar module, in particular a plurality of bifacial solar modules, and with at least one solar module holding device according to the invention is proposed. The solar modules are arranged on the mounting plane, in particular in an assembled state of the solar modules. In particular, the solar modules are arranged in the assembled state of the solar modules such that the main extension planes of the individual solar modules are aligned at least substantially parallel to the mounting plane. The solar modules are preferably supported via the solar module holding device. The solar module device is preferably intended to generate electrical energy from incident light via the bifacial solar modules arranged on the solar module holding device.

[0031] The design of the solar module device according to the invention makes it possible to achieve an advantageously high level of modularity, in particular because the reflection unit can advantageously be mounted and / or dismantled independently of the design of the support shaft. Advantageously low manufacturing costs can be achieved, in particular because one design of the support shaft can be retained for devices with and without a reflection unit. Advantageously simple and rapid assembly of the solar module device can be enabled, in particular compared to a one-piece design of the support shaft and the reflection unit, preferably because when mounting the support shaft there is no need to ensure the protection of reflective surfaces. The reflection unit can advantageously be mounted after mounting the support shaft and / or after mounting the solar modules.By arranging the reflection unit close to or on the support shaft, an advantageously compact design of the solar module device can be achieved. An advantageously high energy yield can be achieved with the bifacial solar modules.

[0032] Furthermore, the present invention relates to a method according to claim 18 for producing a cover element according to the invention. Preferably, in at least one method step, a sheet metal part is formed, in particular punched or cut, from at least one metal sheet. Preferably, in at least one method step, the sheet metal part is / are rolled and / or hardened at one or two edge regions arranged at least substantially parallel to a longitudinal axis of the sheet metal part. Preferably, in at least one method step, to form the fastening region(s), at least one, in particular the aforementioned, recess(es) is / are introduced into the sheet metal part, in particular the edge region(s), preferably by a punching, cutting or pressing process. In at least one method step, the sheet metal part is preferably bent at least substantially parallel to the longitudinal axis of the sheet metal part.Preferably, in at least one method step, the sheet metal part is polished in one area to form a reflective surface. Alternatively or additionally, it is conceivable that in at least one method step, a reflective coating, in particular the aforementioned one, and / or the protective layer is / are applied to the sheet metal part, in particular the reflective surface of the sheet metal part. Preferably, in at least one method step, in particular before or after formation or coating of the reflective surface(s), the sheet metal part is / are formed with a rounded and / or bent edge on at least one end of the sheet metal part formed along a maximum longitudinal extent and / or the longitudinal axis of the sheet metal part. Preferably, the method is provided for forming the cover element from a / the individual sheet metal part.

[0033] The inventive design of the method enables advantageously simple and rapid production of the reflection unit. Advantageously, low manufacturing costs can be achieved. Advantageously, a one-piece design of the reflection unit can be achieved.

[0034] The solar module holding device according to the invention, the reflection unit according to the invention, the solar module device according to the invention, and / or the method according to the invention are not intended to be limited to the application and embodiment described above. In particular, the solar module holding device according to the invention, the reflection unit according to the invention, the solar module device according to the invention, and / or the method according to the invention can have a number of individual elements, components, units, and method steps that differs from the number stated herein in order to fulfill a functionality described herein. Furthermore, in the value ranges specified in this disclosure, values ​​within the stated limits are also to be considered disclosed and can be used arbitrarily. Drawings

[0035] Further advantages will become apparent from the following description of the drawings. The drawings illustrate three exemplary embodiments of the invention. The drawings, the description, and the claims contain numerous features in combination. Those skilled in the art will also expediently consider the features individually and combine them into useful further combinations.

[0036] They show: Fig. 1 is a schematic representation of a solar module device according to the invention with bifacial solar modules and with a solar module holding device according to the invention, which comprises a cover element according to the invention, produced by a method according to the invention, Fig. 2 is a perspective partial representation of the solar module device according to the invention in a region of a support shaft of the solar module holding device according to the invention with the cover element according to the invention, Fig. 3 is a schematic sectional view of the solar module device according to the invention along a longitudinal axis of the support shaft, Fig. 4 is a schematic cross-section through the support shaft and the cover element according to the invention arranged on the support shaft, Fig. 5 is a schematic representation of an exemplary sequence of the method according to the invention for producing the cover element according to the invention, Fig.6 a schematic detailed view of a solar module device according to the invention with an alternative embodiment of a solar module holding device according to the invention in an end region of a cover element according to the invention of the solar module holding device, Fig. 7 a schematic representation of a fastening means of the alternative embodiment of the solar module holding device according to the invention, Fig. 8 a perspective partial representation of a further alternative embodiment of a solar module device according to the invention in a region of a support shaft of the solar module holding device with a cover element according to the invention, which is fastened to the support shaft via clamp-shaped fastening means, Fig. 9 a schematic cross section through the support shaft and the cover element according to the invention arranged on the support shaft of the further alternative embodiment of the solar module device according to the invention. Description of the embodiments

[0037] In Figure 11 shows a solar module device 10a with a plurality of bifacial solar modules 12a and with a solar module holding device 14a for erecting the solar modules 12a. The solar modules 12a of the solar module device 10a are arranged along an imaginary mounting plane 16a of the solar module holding device 14a. The solar modules 12a are fastened to the solar module holding device 14a. The solar module device 10a is intended to generate electrical energy from light incident on the solar modules 12a. The solar module holding device 14a comprises a support unit 18a, which includes a support shaft 20a. The support shaft 20a is intended to support the bifacial solar modules 12a arranged on the imaginary mounting plane 16a. The support shaft 20a, in particular a longitudinal axis 22a of the support shaft 20a, is arranged at least substantially parallel to the mounting plane 16a.The solar module holding device 14a comprises a reflection unit 24a for reflecting incident light onto a side of the bifacial solar modules 12a supported by the support shaft 20a on the imaginary mounting plane 16a, said side facing the support shaft 20a. The support unit 18a comprises two supports 26a (in . Figure 1only one of the supports 26a is shown) for erecting the support shaft 20a. The support shaft 20a is intended to be arranged at least substantially parallel to a base 28a of the solar device 10a or the solar module holding device 14a and / or to a horizontal 30a. The solar module holding device 14a comprises a bearing unit 32a and a motor 34a. The bearing unit 32a is intended to mount the support shaft 20a so that it can move about an axis of rotation 36a. The motor 34a is intended to drive the support shaft 20a, together with the solar modules 12a held on the support shaft 20a, in a movement about the axis of rotation 36a. In particular, the axis of rotation 36a is aligned at least substantially parallel to the longitudinal axis 22a of the support shaft 20a. Preferably, the rotation axis 36a runs along a maximum longitudinal extent of the support shaft 20a through the support shaft 20a.Embodiments of the solar module holding device 14a with a rigidly arranged or immovable support shaft 20a are also conceivable.

[0038] The solar module holding device 14a, in particular the support unit 18a, is provided to hold the solar modules 12a such that a gap 38a is formed between the solar modules 12a, at least substantially parallel to the longitudinal axis 22a of the support shaft 20a. The gap 38a extends along the longitudinal axis 22a of the support shaft 20a, in particular at least substantially completely across the entire width of the solar modules 12a arranged on the solar module holding device 14a. The gap 38a is arranged such that a straight line, which perpendicularly intersects the mounting plane 16a in the region of the gap 38a, runs through the support shaft 20a. It is also conceivable that the solar modules 12a each have at least one translucent region, wherein the carrier unit 18a is provided to hold the solar modules 12a such that the translucent region is arranged at least substantially parallel to the longitudinal axis 22a of the carrier shaft 20a.

[0039] The support unit 18a comprises a plurality of fastening elements 42a, which are intended to fasten the solar modules 12a to the support shaft 20a. In particular, the fastening elements 42a are intended to arrange and fix the solar modules 12a on the mounting plane 16a. Two of the fastening elements 42a are intended to jointly fasten at least one solar module 12a arranged between the two fastening elements 42a on the mounting plane 16a to the support shaft 20a.

[0040] In Figure 2The solar module device 10a is shown in a region of the support shaft 20a, wherein a solar module 12a held by the support shaft 20a is not shown. The reflection unit 24a comprises a plurality of cover elements 44a, each of which has two reflection surfaces 46a and is formed separately from the support shaft 20a. The cover elements 44a are intended to be fastened in a vicinity of the support shaft 20a. The cover elements 44a are each intended to cover an outer surface 48a of the support shaft 20a (see Figure 4 ). The cover elements 44a are each provided to be applied at least partially flat against the support shaft 20a in the mounted state (see also Figure 4). The cover elements 44a are each arranged on an outer side of the support shaft 20a facing the mounting plane 16a or the solar modules 12a. The cover elements 44a are intended to be fastened to the support shaft 20a. Alternatively, it is conceivable that the cover elements 44a are intended to be fastened to the fastening elements 42a or another component of the support unit 18a and to be arranged in the vicinity of the support shaft 20a. The cover elements 44a are each intended to delimit a passage 50a together with the support shaft 20a in the mounted state (cf. Figure 4 ). The cover elements 44a are each at least substantially elongated. The cover elements 44a of the reflection unit 24a are at least substantially identical in construction.

[0041] The passages 50a are each formed by an inner surface 52a of one of the cover elements 44a (cf. Figure 4) and the outer surface 48a of the support shaft 20a. The passages 50a each extend at least substantially parallel to a longitudinal axis 54a of the cover element 44a defining the respective passage 50a and of the support shaft 20a. The passages 50a each extend at least substantially completely over a maximum longitudinal extent 56a of the cover element 44a defining the respective passage 50a (cf. Figure 3 ).

[0042] The cover elements 44a are each provided to at least partially accommodate cables 58a of the solar module device 10a and / or the solar module holding device 14a, which extend along the support shaft 50a and are provided in particular for connecting the bifacial solar modules 12a, via the passage 50a delimited by the respective cover element 44a. The cover elements 44a are each designed as a cable-guiding element, wherein the passage 50a in particular forms a cable duct. The cover elements 44a are provided to accommodate the cables 58a over the maximum longitudinal extent 56a of the respective cover element 44a, wherein in particular the cables 58a are arranged within the passage 50a over the maximum longitudinal extent 56a of the respective cover element 44a. The cables 58a run over a maximum longitudinal extent 56a of the individual cover elements 44a within the bushings 50a.The cover elements 44a each have a bent edge 64a at two ends 60a, 62a formed along a maximum longitudinal extension 56a or the longitudinal axis 54a of the respective cover element 44a. The bent edges 64a each delimit the inner surface 52a of the cover element 44a, which delimits the passage 50a, on two opposite sides. The bent edges 64a of the cover elements 44a are each arranged in a region of an opening of one of the passages 50a.

[0043] The solar module holding device 14a comprises a plurality of fastening means 66a for fastening the cover elements 44a to the support shaft 20a. The fastening means 66a are designed as screws. The cover elements 44a each form two fastening regions 68a, which each extend at least substantially parallel to the longitudinal axis 54a of the respective cover element 44a over the maximum longitudinal extent 56a of the respective cover element 44a. The cover elements 44a each have an at least substantially flat contact surface 70a in the fastening regions 68a (cf. Figure 4). The cover elements 44a are each provided to be applied flatly to the support shaft 20a via the contact surfaces 70a. Alternatively, other configurations of the cover element 44a are also conceivable, for example with only one fastening area 68a or one contact surface 70a, with curved contact surfaces 70a or the like. Within the fastening areas 68a, the cover elements 44a each define a plurality of recesses 72a, which are particularly provided to receive one of the fastening means 66a for fastening the respective cover element 44a to the support shaft 20a. The support shaft 20a defines a plurality of recesses 74a (see Figure 3), which are designed in particular as screw holes. The recesses 74a delimited by the support shaft 20a are each provided to receive one of the fastening means 66a for fastening the respective cover element 44a to the support shaft 20a. The cover elements 44a each delimit eleven recesses 72a on each of the two fastening areas 68a. However, other designs of the cover elements 44a are also conceivable. The cover elements 44a are each formed from a single sheet metal part. The cover elements 44a are each made of sheet steel. The reflective surfaces 46a of the cover elements 44a are each polished, in particular highly polished. Alternatively or additionally, it is conceivable for the cover elements 44a to each have at least one reflective coating on the reflective surfaces 46a.

[0044] Preferably, embodiments of the solar module holding device 14a with only one cover element 44a are also conceivable. In particular, all features of the cover elements 44a described here are also legible on individual cover elements 44a.

[0045] The fastening elements 42a are each fastened to the support shaft 20a in a force-fitting and / or form-fitting manner. The fastening elements 42a each form two holding regions 76a for attaching the solar modules 12a to the fastening elements 42a. The holding regions 76a are each aligned parallel to the mounting plane 16a. The holding regions 76a preferably span the imaginary mounting plane 16a. The two holding regions 76a of the individual fastening elements 42a are spaced apart from one another, viewed perpendicular to the mounting plane 16a, and offset from the support shaft 20a. The fastening elements 42a each form an intermediate region 78a between the two holding regions 76a, which is spaced apart from the mounting plane 16a or a solar module 12a fastened to the respective fastening element 42a. In particular, the fastening elements 42a within the intermediate region 78a are spaced from the mounting plane 16a orthe solar module(s) 12a. Preferably, the fastening elements 42a, together with the mounting plane 16a, each define a recess via the intermediate region 78a, which is provided in particular to allow as much light as possible to pass through to the rear sides of the bifacial solar modules 12a.

[0046] In Figure 3a side sectional view of the solar module device 10a is shown, wherein in particular the solar module device 10a is shown in section in the region of the support shaft 20a along the longitudinal axis 22a of the support shaft 20a. The fastening elements 42a of the support unit 18a, which are provided for fastening the solar modules 12a to the support shaft 20a, are provided to be arranged at a distance from one another along the support shaft 20a. Two of the fastening elements 42a of the support unit 18a are provided to jointly fasten one of the bifacial solar modules 12a to the support shaft 20a. The maximum longitudinal extent 56a of the individual cover elements 44a corresponds to at least 50%, preferably at least 70%, and preferably at least 80%, of a minimum distance 86a between the two fastening elements 42a.The maximum longitudinal extent 56a of the individual cover elements 44a corresponds in particular to at least substantially 90% of the minimum distance 86a between the two fastening elements 42a. The maximum longitudinal extent 56a of the individual cover elements 44a is at least 20 cm, preferably at least 30 cm, and preferably at least 40 cm. In particular, the minimum distance 86a between the two fastening elements 42a depends on the size of the solar modules 12a to be fastened to the solar module holding device 14a. The cables 58a are each guided out of the feedthroughs 50a to the fastening elements 42a, in particular through the fastening elements 42a along the longitudinal axis 22a of the support shaft 20a. In particular, the solar modules 12a can be electrically connected via the cables 58a or the fastening elements 42a.Alternatively, it is conceivable that a plurality of, in particular shorter, cover elements are arranged between the two fastening elements 42a, each of which delimits a passage 50a. Furthermore, it is conceivable that the cover elements together form a single passage 50a. In particular, in the alternative embodiment, the cover elements together have a maximum longitudinal extension 56a, which corresponds to at least 50%, preferably at least 70%, and preferably at least 80%, of the minimum distance 86a between the two fastening elements 42a.

[0047] In Figure 4 is a cross-section of the support shaft 20a, oriented perpendicular to the longitudinal axis 22a of the support shaft 20a, one of the cover elements 44a arranged on the support shaft 20a, and the cable 58a running along the support shaft 20a within the passage 50a. The support shaft 20a has holding means 88a (in Figure 4only one holding means 88a is shown), which are intended to fix the cables 58a within the feedthroughs 50a. The holding means 88a are arranged on the support shaft 20a, in particular the outer surface 48a of the support shaft 20a. The holding means 88a are each designed as a hook. Alternatively, other designs of the holding means 88a are also conceivable, for example as a tab, as a hook-and-loop connection element, as a clamp, as a clip, or the like. The holding means 88a are intended to make the cables 58a fixable to the support shaft 20a without tools and / or detachable from the support shaft 20a. The holding means 88a are arranged on the support shaft 20a distributed along the maximum longitudinal extent 56a of the individual cover elements 44a. The cables 58a are arranged, in particular via the holding means 88a, on the outer surface 48a of the support shaft 20a delimiting the passage 50a.Alternatively or additionally, it is conceivable that the holding means 88a are arranged on the / one of the cover elements 44a, in particular the inner surface 52a of the / one cover element 44a.

[0048] The two reflective surfaces 46a of the individual cover elements 44a each have a main extension plane, wherein the main extension planes of the two reflective surfaces 46a of one of the cover elements 44a are arranged at an angle 90a of at least 45°, preferably at least 60°, and preferably at least 70°, to one another. The two reflective surfaces 46a of the individual cover elements 44a are each at least substantially flat and arranged at an angle to one another. The cover elements 44a each form a curved intermediate region 92a, wherein the two reflective surfaces 46a are arranged adjacent to one another via the intermediate region 92a. The two fastening regions 68a are each arranged on an edge of one of the reflective surfaces 46a facing away from the intermediate region 92a, as viewed along the longitudinal axis 54a of the cover element 44a. The two fastening areas 68a are arranged on two opposite sides of the cover element 44a.

[0049] In the assembled state, the cover elements 44a each extend along a main extension axis 94a of the support shaft 20a by at least 40°, preferably at least 50°, and preferably at least 60°, around the main extension axis 94a of the support shaft 20a, wherein in particular an angular region 95a around the main extension axis 94a, in particular a central axis, of the support shaft 20a is enclosed or concealed by the cover element 44a. The fastening means 66a are provided to be arranged outside the passage 50a delimited by the respective cover element 44a for fastening one of the cover elements 44a to the support shaft 20a. The two fastening regions 68a extend at a distance from the reflective surfaces 46a and the inner surface 52a of the cover element 44a. The contact surfaces 70a are each inclined to the two reflection surfaces 46a when viewed along the longitudinal axis 54a of the cover element 44a.The contact surfaces 70a, viewed along the longitudinal axis 54a of the cover element 44a, are each configured to correspond, in particular parallel, to support surfaces 96a of the support shaft 20a. In particular, the cover element 44a is intended to be applied to the support surfaces 96a of the support shaft 20a via the contact surfaces 70a. The support surfaces 96a of the support shaft 20a are arranged, in particular, at a distance from the outer surface 48a of the support shaft 20a that delimits the passage 50a. The support shaft 20a has a substantially hexagonal basic shape, viewed along the longitudinal axis 22a of the support shaft 20a, wherein the edges of the support shaft 20a, in particular of the basic shape, are preferably rounded. The support shaft 20a is configured as a hollow profile. The support shaft 20a is preferably made of a metal, in particular aluminum or steel.

[0050] The passages 50a are each designed to be at least substantially completely closed when viewed in at least one sectional plane oriented perpendicular to the longitudinal axis 54a of the cover element 44a delimiting the respective passage 50a and / or of the support shaft 20a. The passages 50a each have a substantially triangular cross-sectional area. The bent edges 64a of the cover elements 44a each extend, viewed along the longitudinal axis 54a of the cover element 44a having the respective edge 64a, at least substantially completely over a maximum transverse extent 98a of the inner surface 52a of the cover element 44a having the respective edge 64a, which inner surface delimits the passage 50a and is in particular oriented at least substantially perpendicular to the longitudinal axis 54a of the cover element 44a.

[0051] The cover elements 44a are each provided to cover at least 50%, preferably at least 60%, and preferably at least 65% of a visible surface of the support shaft 20a, viewed perpendicular to the longitudinal axis 22a or a central axis of the support shaft 20a, preferably perpendicular to the mounting plane 16a from the mounting plane 16a, in particular in a region of the support shaft 20a in which the respective cover element 44a is arranged. The cover elements 44a each have a maximum transverse extent 120a, which extends in particular perpendicular to the longitudinal axis 54a of the respective cover element 44a (cf. Figure 2), wherein the maximum transverse extent 120a of the cover elements 44a corresponds to at least 50%, preferably at least 60%, and preferably at least 65%, of a maximum transverse extent 122a of the support shaft 20a, which extends in particular perpendicular to the longitudinal axis 22a of the support shaft 20a and parallel to the maximum transverse extent 120a of the cover element 44a. The maximum transverse extent 120a of the cover elements 44a, which extends in particular perpendicular to the longitudinal axis 54a of the cover element 44a, is at least 5 cm, preferably at least 10 cm, and preferably at least 12 cm.

[0052] In Figure 5An exemplary sequence of a method 100a for producing one of the cover elements 44a is shown. In a method step 102a of the method 100a, a sheet metal part is formed, in particular punched, cut, or pressed, from a metal sheet. In a further method step 104a of the method 100a, the sheet metal part is rolled and / or hardened at two edge regions arranged at least substantially parallel to a longitudinal axis of the sheet metal part. In a further method step 106a of the method 100a, the recesses 72a are introduced into the sheet metal part, in particular the edge regions, to form the fastening regions 68a of the cover element 44a to be produced, preferably by a punching, cutting, or pressing process.In a further method step 108a of method 100a, the sheet metal part is bent at least substantially parallel to the longitudinal axis of the sheet metal part, wherein the intermediate region 92a of the cover element 44a to be produced is formed and the fastening regions 68a are each inclined relative to the reflection surfaces 46a of the cover element 44a to be produced. In a further method step 110a of method 100a, the sheet metal part is polished in the at least substantially flat regions between the intermediate region 92a of the cover element 44a to be produced and the two fastening regions 68a of the cover element 44a to be produced to form the reflection surfaces 46a of the cover element 44a to be produced.Alternatively or additionally, it is conceivable that in at least one method step of method 100a, a reflective coating and / or a protective layer is / are applied to the sheet metal part, in particular to the reflective surfaces of the sheet metal part. In a further method step 112a of method 100a, the sheet metal part is formed with the bent edges 64a of the cover element 44a to be produced at two ends of the sheet metal part formed along a maximum longitudinal extent and / or the longitudinal axis of the sheet metal part.

[0053] In the Figures 6 to 9Further embodiments of the invention are shown. The following description and drawings are essentially limited to the differences between the embodiments, whereby with regard to components with the same designation, in particular with regard to components with the same reference numerals, reference is also made to the drawings and / or the description of the preceding embodiment, in particular to the Figures 1 to 5 To distinguish the embodiments, the letter a is added to the reference numerals of the embodiment in the Figures 1 to 5 In the examples of the Figures 6 to 9 the letter a is replaced by one of the letters b and c.

[0054] In Figure 6A solar module device 10b with an alternative embodiment of a solar module holding device 14b for mounting bifacial solar modules 12b is shown. The solar module device 10b comprises a plurality of bifacial solar modules 12b. The solar module holding device 14b comprises a support unit 18b, which includes a support shaft 20b. The support shaft 20b is intended to support the bifacial solar modules 12b of the solar module device 10b, which are arranged on an imaginary mounting plane 16b. The support shaft 20b, in particular a longitudinal axis 22b of the support shaft 20b, is arranged at least substantially parallel to the mounting plane 16b. The solar module holding device 14b comprises a reflection unit 24b for reflecting incident light onto a side of the bifacial solar modules 12b supported by the support shaft 20b on the imaginary mounting plane 16b, said side facing the support shaft 20b.The reflection unit 24b comprises a plurality of cover elements 44b, each having two reflection surfaces 46b and formed separately from the support shaft 20b. The cover elements 44b are intended to be fastened in a vicinity of the support shaft 20b. In an assembled state, the cover elements 44b are intended to cover an outer surface 48b of the support shaft 20b (in . Figure 6 not shown, cf. Figure 4 ) to cover the Figures 6 and 7 The solar module holding device 14b shown has an at least substantially analogous design to that described in the description of Figures 1 to 5 described solar module holding device 14a, so that with regard to an embodiment of the solar module holding device 14a Figures 6 and 7 illustrated solar module holding device 14b at least essentially to the description of the Figures 1 to 5 In contrast to the description of the Figures 1 to 5The solar module holding device 14a described comprises the Figures 6 and 7 The solar module holding device 14b shown has a plurality of fastening means 66b for fastening the cover elements 44b to the support shaft 20b, wherein the fastening means 66b are each provided for a snap-in connection. The fastening means 66b are provided for fastening one of the cover elements 44b to the support shaft 20b outside a passage 50b delimited by the respective cover element 44b and the support shaft 20b (in Figure 6 not shown, cf. Figure 4 ). The fastening means 66b are each designed as a clamp (cf. Figure 7 ). The fastening means 66b are provided for fastening the cover element 44b through recesses 72b defined by the cover element 44b and recesses 74b defined by the support shaft 20b (in Figure 6 not shown, cf. Figure 3), wherein in particular a force-fitting and form-fitting connection of the cover element 44b and the support shaft 20b is created. The fastening means 66b are provided to fasten the cover element 44b to the support shaft 20b by clamping. Alternatively or additionally, it is conceivable for the solar module holding device 14b to comprise at least one fastening means or a plurality of fastening means for fastening the cover element 44b to the support shaft 20b, wherein in particular the fastening means is / are each designed differently from a locking element. For example, the fastening means is / are provided for a screw and / or press connection. For example, the fastening means is / are designed as screws, rivets or the like.Alternatively or additionally, it is conceivable that the fastening means 66b is / are fastened to the cover element 44b or the support shaft 20b, is / are integrally connected thereto, and / or is / are formed integrally therewith. For example, the support shaft 20b delimits the plurality of recesses 74b, wherein the cover element 44b forms a plurality of fastening means 66b, which are intended to be pressed through the recesses 74b of the support shaft 20b for mounting the cover element 44b on the support shaft 20b. In . Figure 7a schematic representation of one of the fastening means 66b is shown. The fastening means 66b are each formed from a single piece of metal, in particular sheet metal. The fastening means 66b each have two wings 114b, which are movable relative to one another along an axis running through the two wings 114b. In particular, the fastening means 66b are designed such that the two wings 114b are subjected to a restoring force when moving towards one another. The wings 114b each form a latching extension 116b, which is arranged on a side of one of the wings 114b facing away from the other wing 114b. Preferably, the two wings 114b each form a further latching extension 118b, which is each arranged in an end region of the respective wing 114b forming the latching extension.The fastening means 66b are preferably provided for clamping the cover element 44b and the support shaft 20b, in particular walls of the cover element 44b and the support shaft 20b, between the locking projection 116b and the further locking projection 118b to fasten the cover element 44b to the support shaft 20b. The fastening means 66b are provided for making the cover element 44b attachable to the support shaft 20a without the use of tools and / or detachable from the support shaft 20a. Alternatively, it is conceivable for the fastening means 66b to each be designed as a plastic screw, which is provided for cooperating with a further fastening means designed as a plastic insert, which is arranged, in particular, fastened, to the support shaft 20b, to fasten the cover element 44b to the support shaft 20b.

[0055] In the Figures 8 and 9A solar module device 10c with a further alternative embodiment of a solar module holding device 14c for mounting bifacial solar modules 12c is shown. The solar module device 10c comprises a plurality of bifacial solar modules 12c. The solar module holding device 14c comprises a support unit 18c, which includes a support shaft 20c. The support shaft 20c is provided to support the bifacial solar modules 12c of the solar module device 10c, which are arranged on an imaginary mounting plane 16c. The support shaft 20c, in particular a longitudinal axis 22c of the support shaft 20c, is arranged at least substantially parallel to the mounting plane 16c. The solar module holding device 14c comprises a reflection unit 24c for reflecting incident light onto a side of the bifacial solar modules 12c supported by the support shaft 20c on the imaginary mounting plane 16c, said side facing the support shaft 20c.The reflection unit 24c comprises at least one cover element 44c, which has two reflection surfaces 46c and is formed separately from the support shaft 20c. The cover element 44c is intended to be fastened in a vicinity of the support shaft 20c, in particular to the support shaft 20c. The cover element 44c is intended to cover an outer surface 48c of the support shaft 20c (see FIG. 1 ) in an assembled state. Figure 9 ) to cover.

[0056] The Figures 8 and 9 The solar module holding device 14c shown has an at least substantially analogous design to that described in the description of Figures 1 to 5 described solar module holding device 14a, so that with regard to an embodiment of the solar module holding device 14a Figures 8 and 9 illustrated solar module holding device 14c at least essentially to the description of the Figures 1 to 5 In contrast to the description of the Figures 1 to 5 The solar module holding device 14a described comprises the Figures 8 and 9The solar module holding device 14c shown has fastening means 66c for fastening the cover element 44c to the support shaft 20c by means of a clamping and / or snap-in connection, wherein the fastening means 66c are each provided to at least largely enclose the support shaft 20c around the longitudinal axis 22c for fastening the cover element 44c along the longitudinal axis 22c of the support shaft 20c, as viewed. The solar module holding device 14c comprises, in particular, precisely two fastening means 66c for fastening the cover element 44c to the support shaft 20c. The fastening means 66c are each formed from a piece of wire. The fastening means 66c are each formed as a spring wire. The fastening means 66c are each clamp-shaped. The fastening means 66c are formed from a metal.The fastening means 66c each have a maximum width 124c of at most 2 cm, preferably at most 1 cm, preferably at most 0.5 cm, and most preferably at most 0.3 cm. Preferably, the fastening means, each designed as a spring wire, each have a maximum diameter of at least substantially 0.3 cm. In particular, the cover element 44c, in particular fastening regions of the cover element 44c (cf. 68a in . Figures 2 and 4 ), preferably when mounted via the Figures 8 and 9 The fastening means 66c shown are designed to be free of recesses and / or passages. This allows for an advantageously simple, rapid, and cost-effective production of the cover element 44c.

[0057] In Figure 9A cross-section of the solar module holding device 14c is shown in a region of the support shaft 20c and the cover element 44c. The fastening means 66c encompass the cover element 44c over a maximum transverse extent 98c of the cover element 44c, in particular the reflective surfaces 46c. When fastened to the support shaft 20c, the fastening means 66c extend along the longitudinal axis 22c of the support shaft 20c, each over an angular range of at least 180°, preferably at least 200°, and preferably at least 220°, around the longitudinal axis 22c of the support element 20c.The fastening elements 66c each rest on an outer surface of the cover element 44c, which extends in particular over the fastening regions, the reflection surfaces 46c, and an intermediate region 92c of the cover element 44c, and, in particular in a region spaced from the cover element 44c, on an outer surface of the support shaft 20c, which is in particular designed differently from a support surface 96c of the support shaft 20c and from the outer surface 48c of the support shaft 20c concealed by the cover element 44c. The fastening means 66c are each provided to engage behind the support shaft 20c for clamping and / or locking connection to the support shaft 20c. The fastening means 66c are preferably designed to be elastic and flexible in shape.In particular, the fastening means 66c are each provided to be moved at least partially around the cover element 44c arranged on the support shaft 20c and the support shaft 20c by means of a brief elastic bending for clamping and / or locking connection with the support shaft 20c. The fastening means 66c each have, in their two end regions, a section bent outward, in particular away from the support shaft 20c, which is provided in particular for easier assembly and / or disassembly of the fastening means 66c.

[0058] The cover element 44c preferably defines guide recesses (not explicitly shown in the figures), which are provided to at least partially accommodate a fastening means 66c when the cover element 44c is fastened to the support shaft 20c. The guide recesses preferably extend at least substantially perpendicular to the longitudinal axis 54c of the cover element 44c. The guide recesses can advantageously ensure a secure hold of the fastening means 66c against movement parallel to the longitudinal axis 22c, 54c of the cover element 44c and / or the support shaft 20c. It is conceivable for the guide recesses to each extend over the entire maximum transverse extent 120c of the cover element 44c or only over a portion of the maximum transverse extent 120c of the cover element 44c, preferably on two side regions and / or the intermediate region 78c of the cover element 44c.

[0059] Alternatively, it is conceivable that the fastening means 66c are each provided to be arranged on the support shaft 20c from a side of the support shaft 20c facing away from the cover element 44c, wherein the cover element 44c is fastened to the support shaft 20c by the fastening means 66c, in particular via the fastening regions (not shown in the figures). The fastening means 66c are preferably arranged at a distance from the reflection surfaces 46c and the intermediate region 92c of the cover element 44c. In particular, in this alternative embodiment, the fastening means 66c engage behind the support shaft 20c for fastening the cover element 44c to the support shaft 20c in a region of the support surface 96c together with the fastening regions of the cover element 44c.

Claims

1. Solar module holding device for an installation of bifacial solar modules (12a; 12b; 12c), with at least one carrier unit (18a; 18b; 18c), the carrier unit (18a; 18b; 18c) comprising at least one carrier shaft (20a; 20b; 20c) carrying at least one bifacial solar module (12a; 12b; 12c) that is arranged on an imaginary mounting plane (16a; 16b; 16c), wherein the carrier shaft (20a; 20b; 20c) is arranged at least substantially parallel to the mounting plane (16a; 16b; 16c), and with at least one reflection unit (24a; 24b; 24c) for reflecting incident light onto a side, facing towards the carrier shaft (20a; 20b; 20c), of a bifacial solar module (12a; 12b; 12c) that is supported on the imaginary mounting plane (16a; 16b; 16c) by the carrier shaft (20a; 20b; 20c), the reflection unit (24a; 24b; 24c) comprising at least one cover element (44a; 44b; 44c) which has at least one reflection surface (46a; 46b; 46c) and is realized separately from the carrier shaft (20a; 20b; 20c), wherein the cover element (44a; 44b; 44c) is fastened in a proximity of the carrier shaft (20a; 20b; 20c), wherein in at least one mounted state of the cover element (44a; 44b; 44c) the cover element (44a; 44b; 44c) covers at least an outer surface (48a; 48b; 48c) of the carrier shaft (20a; 20b; 20c), characterized in that the cover element (44a; 44b; 44c) delimits in the mounted state at least one passage (50a; 50b; 50c) together with the carrier shaft (20a; 20b; 20c), wherein the cover element (44a; 44b; 44c) at least partially accommodates via the passage (50a; 50b; 50c) cables (58a; 58b; 58c) which extend on the carrier shaft (20a; 20b; 20c) and which are in particular configured for a connection of at least one bifacial solar module (12a; 12b; 12c).

2. Solar module holding device according to claim 1, characterized in that in the mounted state, the cover element (44a; 44b; 44c) is placed at least partially flat against the carrier shaft (20a; 20b; 20c).

3. Solar module holding device according to claim 1, characterized in that the reflection unit (24a; 24b; 24c), in particular the cover element (44a; 44b; 44c), and / or the carrier shaft (20a; 20b; 20c) comprise / comprises at least one holding means (88a) which fixes cables (58a; 58b; 58c) within the passage (50a; 50b; 50c).

4. Solar module holding device according to one of the preceding claims, characterized in that the cover element (44a; 44b; 44c) comprises at least one rounded and / or bent edge (64a; 64b; 64c) on at least one end (60a; 62a) of the cover element (44a; 44b; 44c) that is formed along a maximum longitudinal extent (56a; 56b; 56c) of the cover element (44a; 44b; 44c).

5. Solar module holding device according to one of the preceding claims, characterized in that the carrier unit (18a; 18b; 18c) comprises at least two fastening elements (42a; 42b; 42c) for fastening at least one bifacial solar module (12a; 12b; 12c) to the carrier shaft (20a; 20b; 20c), wherein the two fastening elements (42a; 42b; 42c) are arranged spaced apart from one another along the carrier shaft (20a; 20b; 20c) and jointly fasten at least one bifacial solar module (12a; 12b; 12c) to the carrier shaft (20a; 20b; 20c), wherein the cover element (44a; 44b; 44c) has a maximum longitudinal extent (56a; 56b; 56c) corresponding to at least 50% of a minimum distance (86a; 86b; 86c) of the two fastening elements (42a; 42b; 42c).

6. Solar module holding device according to one of the preceding claims, characterized in that the cover element (44a; 44b; 44c) comprises at least two reflection surfaces (46a; 46b; 46c), wherein main extension planes of the two reflection surfaces (46a; 46b; 46c) are arranged at an angle (90a; 90c) of at least 45° with respect to one another.

7. Solar module holding device according to one of the preceding claims, characterized in that the cover element (44a; 44b; 44c) comprises at least two at least substantially planar reflection surfaces (46a; 46b; 46c), which are arranged at an inclination with respect to one another.

8. Solar module holding device according to one of the preceding claims, characterized in that in the mounted state the cover element (44a; 44b; 44c) extends, viewed along a main extension axis (94a; 94b; 94c) of the carrier shaft (20a; 20b; 20c), by at least 40° around the main extension axis (94a; 94b; 94c) of the carrier shaft (20a; 20b; 20c).

9. Solar module holding device according to one of the preceding claims, characterized by at least one fastening means (66b; 66c) for fastening the cover element (44b; 44c) to the carrier shaft (20b; 20c), wherein the at least one fastening means (66b; 66c) is configured for a latching connection.

10. Solar module holding device according to one of claims 1 and 3, characterized by at least one fastening means (66a; 66b; 66c) for fastening the cover element (44a; 44b; 44c) to the carrier shaft (20a; 20b; 20c), wherein for the purpose of fastening the cover element (44a; 44b; 44c) to the carrier shaft (20a; 20b; 20c), the at least one fastening means (66a; 66b; 66c) is arranged outside the passage (50a; 50b; 50c).

11. Solar module holding device according to one of the preceding claims, characterized by at least one fastening means (66c) for fastening the cover element (44c) to the carrier shaft (20c) via a clamping and / or latching connection, wherein for the purpose of fastening the cover element (44c), viewed along a longitudinal axis (22c) of the carrier shaft (20c), the fastening means (66c) at least largely encompasses the carrier shaft (20c) around the longitudinal axis (22c).

12. Solar module holding device according to one of the preceding claims, characterized by at least one fastening means (66c) for fastening the cover element (44c) to the carrier shaft (20c) via a clamping and / or latching connection, wherein the fastening means (66c) engages around the cover element (44c) over a maximum transverse extent of the cover element (44c), in particular the reflection surface (46c).

13. Solar module holding device according to one of the preceding claims, characterized in that the cover element (44a; 44b; 44c) is formed from a single piece of sheet-metal.

14. Solar module holding device according to one of the preceding claims, characterized in that the reflection surface (46a; 46b; 46c) is realized in polished fashion.

15. Solar module holding device according to one of the preceding claims, characterized in that the cover element (44a; 44b; 44c) has at least one reflection coating on the reflection surface (46a; 46b; 46c).

16. Cover element for a solar module holding device (14a; 14b; 14c) according to one of the preceding claims.

17. Solar module device with at least one bifacial solar module (12a; 12b; 12c), in particular a plurality of bifacial solar modules (12a; 12b; 12c), and with at least one solar module holding device (14a; 14b; 14c) according to one of claims 1 to 15.

18. Method for producing a cover element (44a; 44b; 44c) according to claim 16.