REAR FACE ELEMENT FOR A SOLAR MODULE

Abstract

The invention relates to a rear face element for a solar module, said element being made of a material sheet that is shaped, in particular embossed and/or stamped. Some sections of the material sheet are arranged on a first plane, and some sections are arranged on at least one second plane parallel to the first plane. The material sheet forms spacer elements in a transition region between the first and the second plane in order to space the first plane from the second plane, and at least one first material sheet section extends from a first lateral edge to an opposing second lateral edge of the material sheet continuously, in particular in a linear manner. The invention also relates to a solar module and to a method for producing a solar module.

Claims

1. A rear face element for a solar module formed from a material sheet that is shaped, cut into in some sections, in particular embossed and/or stamped, wherein some sections of the material sheet are arranged in a first plane and some sections are arranged in at least one second plane parallel to the first plane, and wherein the material sheet forms spacing elements in a transitional region from the first plane to the second plane in order to keep the first plane at a spacing distance from the second plane, and wherein at least one first material sheet section extends continuously, in particular in a linear manner, from a first lateral edge to an opposite second lateral edge of the material sheet in the first plane, wherein n first material sheet sections, where n=1, 2, 3, 4, 5, 6, 7, 8, 9 or more, extend from a first side edge to an opposite second side edge of the material sheet in the first plane and/or m second material sheet sections, where m=1, 2, 3, 4, 5, 6, 7, 8, 9 or more, extend from a third side edge of the material sheet to an opposite fourth side edge in the first plane, wherein the first and second material sheet sections extend at angles to one another, and wherein the material sheet sections produced from the material sheet by shaping and cutting-in form openings in the rear face element at least in some sections in the regions in which the material sheet sections do not lie in the same plane.

2. The rear face element as claimed in claim 1, characterized in that the n first material sheet sections extend continuously, from a first side edge to an opposite second side edge of the material sheet, in the first plane and/or the m second materials sheet sections extend continuously from a third side edge of the material sheet to an opposite fourth side edge in the first plane.

3. The rear face element as claimed in claim 1, characterized in that the second plane p, where p=1, 2, 3, 4, 5, 6, 7, 8, 9 or more, comprises sheet-like elements which are arranged at a spacing distance from one another, and which in particular are arranged in each case between the n first material sheet sections and/or m second material sheet sections of the first plane.

4. The rear face element as claimed in claim 3, characterized in that each of the sheet-like elements of the second plane is connected to the first and/or second material sheet sections of the first plane by means of four spacing elements, the spacing elements being formed by cutting in and shaping the material sheet.

5. The rear face element as claimed in claim 3, characterized in that the rear face element has q cells, where q=1, 2, 3, 4, 5, 6, 7, 8, 9 or more, wherein each of the q cells is formed from two first material sheet sections, two second material sheet sections in the first plane and a sheet-like element in the second plane.

6. The rear face element as claimed in claim 5, characterized in that a first first material sheet section forms a first side end, a second first material sheet section forms a second side end, opposite from the first side end, a first second material sheet section forms a third side end, arranged at right angles to the first and second side ends, and a second second material sheet section forms a fourth side end, opposite from the third side end, wherein, by shaping, a first cutout of the material sheet, beginning with the second second material sheet section, extends at a first distance parallel to the first first material sheet section up to a first spacing distance from the first second material sheet section and a second cutout of the material sheet, beginning with the second second material sheet section, extends at a second distance, greater than the first distance, parallel to the first first material sheet section up to a second spacing distance, greater than the first spacing distance, from the first second material sheet section and/or, by shaping, a third cutout of the material sheet, beginning with the first second material sheet section, extends at a first distance parallel to the second first material sheet section up to a first spacing distance from the second second material sheet section and a fourth cutout of the material sheet, beginning with the first second material sheet section, extends at a second distance, greater than the first distance, parallel to the second first material sheet section up to a second spacing distance, greater than the first spacing distance, from the second second material sheet section and/or, by shaping, a fifth cutout of the material sheet, beginning with the first first material sheet section, extends at a first distance parallel to the first second material sheet section up to a first spacing distance from the second first material sheet section and a sixth cutout of the material sheet, beginning with the first first material sheet section, extends at a second distance, greater than the first distance, parallel to the first second material sheet section up to a second spacing distance, greater than the first spacing distance, from the second first material sheet section and/or, by shaping, a seventh cutout of the material sheet, beginning with the second first material sheet section, extends at a first distance parallel to the second second material sheet section, up to a first spacing distance from the first first material sheet section and a eighth cutout of the material sheet, beginning with the second first material sheet section, extends at a second distance, greater than the first distance, parallel to the second second material sheet section up to a second spacing distance, greater than the first spacing distance, from the first first material sheet section, and so at least one spacing element or four spacing elements is/are formed for keeping the sheet-like element at a spacing distance from the first and second material sheet sections within the cell.

7. The rear face element as claimed in claim 1, characterized in that the material sheet consists of and/or comprises metal, high-grade steel, steel sheet, iron sheet, copper, brass, aluminum, plastic, injection-molded plastic and/or partially encapsulated metal, and has a thickness in a range from 0.2 mm to 4 mm.

8. The rear face element as claimed in claim 1, characterized in that the rear face element has at least one clearance in the first plane and/or in the second plane, in order to receive a connection socket for electrical contact of a solar cell and/or a solar cell matrix and/or to allow electrical contact of a solar cell and/or a solar cell matrix wherein the region is exposed in the clearance of the cross-connectors of a solar cell and/or a solar cell matrix.

9. The rear face element as claimed in claim 1, characterized in that the material sheet comprises reinforcing elements arranged in the connecting region of the rear face element of the solar module to the substructure.

10. The rear face element as claimed in claim 3, characterized in that at least one sheet-like element of the second plane is shaped in such a way that a third plane is formed and/or has a shaped, or embossed, surface structure.

11. The rear face element as claimed in claim 1, characterized in that retaining eyelets, clamps, cable guides and/or cable ducts for the electrical contacting of the solar module are comprised and/or the rear face element has clearances in the edge region in order to allow secure transport of electrical contact elements, and to simplify/ensure fastening thereof after fitting of the solar module.

12. The rear face element as claimed in claim 1, characterized in that all the edges of the rear face elements are shaped by flanging.

13. The rear face element as claimed in claim 1, characterized in that all the edges of the rear face element comprise clearances and/or formations that can be brought into or are in operative connection with comparable clearances and/or formations of a further rear face element, the clearances and/or formations being designed and set up for aligning two rear face elements with one another.

14. The rear face element as claimed in claim 1, characterized in that all the edges of the rear face element have fastening devices and/or clearances, in particular in the form of bores, designed and set up for connecting the rear face elements unreleasably or releasably to a further element and/or the substructure.

15. The rear face element as claimed in claim 1, characterized in that the rear face element consists of a shaped material sheet.

16. A solar module, comprising at least two solar cells and at least one rear face element arranged on the rear face of the solar cells, the second plane of the at least one rear face element being arranged facing the rear face of the solar cells.

17. The solar module as claimed in claim 16, characterized in that the solar module does not comprise a module frame or a fitting system comprising backrails.

18. The solar module as claimed in claim 16, characterized in that in each case at least one sheet-like element and/or at least one cell, wherein the number of sheet-like elements is r and wherein r=1, 4, 9 or 16, and wherein the sheet-like element or sheet like elements is or are arranged in the second plane of the rear face element at least partially overlapping with in each case at least one of the solar cells of the solar cell matrix of the solar module, and so the sheet-like elements and/or cells lie opposite the rear face of each of the solar cells.

19. The solar module as claimed in claim 16, characterized in that the rear face element covers over the entire rear face of the solar module or at least one or more rear face elements cover(s) a partial region of the rear face of the solar module.

20. A method for producing a solar module comprising the following steps, in particular in this sequence: a) providing a substrate panel; b) arranging at least two solar cells that are electrically contacted with respect to one another on the substrate panel; c) arranging at least one rear-side laminate layer on the rear face of the solar cell; d) arranging at least one rear face element as claimed in claim 1 on the rear-side laminate layer; and e) laminating the solar module.

21. The method as claimed in claim 20, also comprises the following sequential steps after step e): f) trimming the laminate; and g) placing the connection sockets for electrical contacting of the solar module.

22. A method for producing a solar module comprising the following sequential steps: aa) providing a substrate panel; ab) arranging at least two solar cells that are electrically contacted with respect to one another on the substrate panel; ac) arranging at least one rear-side laminate layer on the rear face of the solar cell; ad) laminating at least the rear-side laminate layer; and ae) arranging at least one rear face element according to the invention on the rear-side laminate layer and connecting the rear face element to the rear-side laminate layer by silicone or polyurethane adhesive, and placing the connection sockets for the electrical contacting of the solar module.

Description

[0076] Further features and advantages of the invention emerge from the following description, in which exemplary embodiments of the invention are explained by way of example on the basis of schematic drawings, without thereby restricting the invention. In the drawings:

[0077] FIG. 1: shows a schematic perspective view of a rear face element according to the invention;

[0078] FIG. 2: shows a schematic perspective view of a second embodiment of a rear face element according to the invention;

[0079] FIG. 3: shows a schematic perspective view of an embodiment of a further rear face element according to the invention and of a solar module; and

[0080] FIG. 4: shows a schematic side view of an embodiment of the rear face element according to the invention and of the solar module according to FIG. 3.

[0081] In FIG. 1, a first embodiment of a rear face element 1 according to the invention is represented. The rear face element 1 consists of a shaped material sheet 3, wherein some sections of the material sheet 3 are arranged in a first plane 5 and some sections are arranged in a second plane 7 parallel to the first plane 5. In a transitional region from the first plane 5 to the second plane 7, the material sheet 3 forms spacing elements 9 in order to keep the first plane 3 at a spacing distance from the second plane 5. Two first material sheet sections 11, 11 extend in this case parallel to one another and at right angles to two second material sheet sections 13, 13 arranged parallel to one another.

[0082] In this case, the first first material sheet section 11 has a first side end 15 and the second first material sheet section 11 has a second side end (not shown), opposite from the first side end 15. The first second material sheet section 13 has a third side end, arranged at right angles to the first and second side ends 15, and the second second material sheet section 13 has a fourth side end 17, opposite from the third side end 17. It goes without saying that this configuration should only be understood as given by way of example. The side ends 17, 17 may alternatively also be curved, and so the spacing elements 9 are not rectangularly formed. The pointed corners of the first and second planes 5, 7 may of course also be formed as rounded.

[0083] By shaping, a first cutout of the material sheet 3, beginning with the second second material sheet section 13, extends at a first distance 21 parallel to the first first material sheet section 11 up to a first spacing distance 19 from the first second material sheet section 13 and a second cutout of the material sheet 3, beginning with the second second material sheet section 13, extends at a second distance 21, greater than the first distance 21, parallel to the first first material sheet section 11 up to a second spacing distance 19, greater than the first spacing distance 19, from the first second material sheet section 13.

[0084] There are corresponding cutouts turned in each case by 90?, in order to keep the second plane 7 at a spacing distance from the first plane 5 and in order to transmit the forces acting on the second plane 7 to the first plane 5. FIG. 2 shows a further embodiment of a rear face element 1 according to the invention. This comprises 9 cells 23 according to the exemplary embodiment in FIG. 1.

[0085] It can be seen well in FIG. 1 and the further figures that an optimum circulation of air can be made possible by the openings formed in the material sheet, represented by way of example by the arrows A.

[0086] It goes without saying that here, too, the number of cells 23 should only be understood as given by way of example and they can be formed in any desired number, symmetrically or asymmetrically. All nine cutouts have in FIG. 2 the same direction of rotation. The direction of rotation may however also be different.

[0087] FIG. 3 shows a solar module 25 according to the invention, which is connected to an alternative rear face element 1, in a perspective view.

[0088] FIG. 4 shows the solar module 25 in a schematic sectional view.

[0089] In this case, the configurational variant of the rear face element 1 according to the invention differs by a third plane 27, which is arranged between the first plane 5 and the second plane 7. As already stated above, the geometry and the number of the planes formed by the material sheet 3 can be adapted to the specific application, in order to stabilize and fasten the laminar structure 29 comprising the solar cells.

[0090] The features of the invention that are disclosed in the foregoing description, the claims and the drawings may be essential both individually and in any desired combination for implementing the invention in various embodiments.