Connection box

Abstract

Connection box for a solar tile comprising a, in particular central, base body, in particular with a first longitudinal extension and in particular two side parts, each opposite the central base body in the direction of the longitudinal extension and fixed to it at their ends, in particular with mutually parallel longitudinal extensions perpendicular to the first longitudinal extension, wherein the connection box, in particular the base body and side parts, form a support plane by support surface sections for supporting a rear carrier layer of a solar cell arrangement, wherein the connection box, in particular the side parts, is / are stepped on its underside facing away from the support surface sections and / or a mounting surface parallel to the support plane for supporting on a roof batten and in particular each adjoining thereto at an angle in the range between 80 and 120°, in particular between 85 and 120°,extending stop surface section for contact with a roof batten, which in particular has at least one projection for gripping a roof batten.,

Description

[0001] The present invention relates to a junction box for solar tiles. Such junction boxes are known from the prior art and are typically mounted centrally beneath a solar tile to transfer the solar cell contacts to connecting cables, seal this transition and the entry into the back cover of the solar cells, and, if necessary, accommodate additional components such as diodes.

[0002] The object of the invention is to provide a means of fastening the solar tiles to the building without any additional component being attached to the solar cell, which in particular also facilitates installation.

[0003] This is solved by a junction box and a solar tile with such a junction box.

[0004] The junction box according to the invention allows the solar tile to be placed directly on the roof, preventing slippage and allowing for final fastening, for example, by screwing, without the need to hold the solar tile in place. Furthermore, the contact and fastening device can be combined with a single component, the junction box, to save material. It also offers the added value that the height from the roof batten can be adjusted by modifying the design of the junction box, particularly its height.

[0005] For example, existing plain shingles can be supplemented or replaced with solar tiles with little effort.

[0006] In addition, the junction box can provide additional functions or advantages. For example, its edge-mounted arrangement can also provide a stable enclosure for the solar cell and / or protect it from water pressure over the upper edge caused by wind.

[0007] Further advantages and possible embodiments are explained purely by way of example and not by way of limitation in the following description of the purely schematic figures. They show: Fig. 1 plain tile solar tile with connection box, Fig. 2 Exploded view of a junction box and Fig. 3 Section through a solar cell arrangement with junction box.

[0008] Fig. Figure 1 shows a plain tile solar tile with a junction box. The junction box is stepped and has an enclosing section that surrounds the solar tiles and extends to their front side / upper cover layer (not shown).

[0009] Fig. 2 shows an exploded view of a junction box without enclosure section, but otherwise similar to that of Fig. 1. The central base body and two side panels with inserts are visible. Also visible are the recesses / guides for the connecting cables, which are to be arranged on both sides. The inserts have upwardly projecting, ring-shaped extensions that can extend through holes in the solar cell array and provide additional stabilization and protection for the glass cover when screwed or riveted through these and the (blind) holes in the side panels through the solar cell array. Furthermore, the inserts each have numerous circular and web-shaped support surface sections for supporting a rear carrier layer of the solar cell array. Space is provided between them for adhesive to bond the connection box to the carrier layer.

[0010] The receiving space of the base body is then closed at the top by the solar cell arrangement. For better sealing, its edge has a groove for accommodating adhesive and / or sealant.

[0011] Fig.Figure 3 shows a cross-section through a solar cell array with a junction box similar to those shown previously, but with an enclosing and water-deflecting element that can be screwed or riveted to the base body. This element is F-shaped in cross-section and encloses the solar cell array, extending to its front. However, it also extends upwards beyond it. Its lateral extension is selected to cover the entire width of the solar cell array, thus being significantly wider than the junction box. This allows the solar cell array to be enclosed from above across its entire width, preventing water from being driven over the solar cell by wind and behind the roof membrane formed by the solar cells across the entire width.For connection to the junction box, the element has two holes distributed across the width of the base body or the junction box, and the junction box has corresponding receptacles for rivets / screws. Additionally, the side panels are screwed to the solar cell array from the front. The stepped design of the side panels is also clearly visible.

Claims

[1] Connection box for a solar tile comprising a, in particular central, base body, in particular with a first longitudinal extension and in particular two side parts fixed to the central base body, each opposite one another in the direction of the longitudinal extension, in particular with mutually parallel longitudinal extensions perpendicular to the first longitudinal extension, wherein the connection box, in particular the base body and side parts, form a support plane by support surface sections for supporting a rear carrier layer of a solar cell arrangement, wherein the connection box, in particular the side parts, is / are stepped on its underside facing away from the support surface sections and / or a mounting surface parallel to the support plane for supporting on a roof batten and in particular in each case an adjoining thereto at an angle in the range between 80 and 120°, in particular between 85 and 120°,extending stop surface section for contact with a roof batten, which in particular has at least one projection for gripping a roof batten., [2] Connection box according to one of the preceding claims, wherein the connection box, in particular the base body and both side parts together, has an enclosing section which, opposite the support surface, has a contact surface for contact with an upper cover layer of a solar cell arrangement resting on the support plane. [3] Connection box according to one of the preceding claims, wherein the connection box has a lower shell-shaped element which, in particular in the central base body and / or both side parts, in particular spans separate receiving volumes and in particular encloses them on at least three sides, wherein the receiving volumes are separated from one another in particular by webs, wherein the webs in particular each have a recess for the passage of a cable. [4] Connection box according to one of the preceding claims, wherein the receiving volumes extend from the support plane in a direction away from the contact surface. [5] Connection box according to one of the preceding claims, wherein the side parts each adjoin one end of the longitudinal extension of the base body. [6] Connection box according to one of the preceding claims, wherein the connection box, in particular the side parts each have / have a shell-shaped insert element which encloses / encloses an insert receiving volume, wherein in particular the insert element and / or the insert receiving volume is / are each inserted into a receiving volume, in particular in such a way that the receiving volume is limited by the inserted insert element and the insert receiving volume is limited by the shell-shaped element. [7] Connection box according to one of the preceding claims, wherein the shell-shaped insert elements each have a notch and / or recess and / or guide for inserting a cable, in particular in alignment with the respective recess in the adjacent web, wherein the side parts have a recess and / or depression in their side facing away from the base body in its longitudinal extension, in particular in alignment with the recess in the web arranged in each case towards the base body. [8] Connection box according to one of the preceding claims, wherein the base body is open to the support plane and / or has an opening for guiding at least one cable and / or two insulated conductors through the support plane into the receiving volume of the base body. [9] Connection box according to one of the preceding claims, wherein the support plane is formed at least or exclusively by support sections of the base body, the enclosing section, the side parts and / or their insert elements. [10] Connection box according to one of the preceding claims, wherein the enclosing section is designed as a separate component, in particular made of metal or plastic, which is firmly connected to the shell-shaped element and / or the base body, in particular by clamping, riveting, gluing and / or screwing. [11] Connection box according to one of the preceding claims, wherein the base body, the side parts, the shell-shaped element and / or the inserts are made of plastic and / or plastic. [12] Connection box according to one of the preceding claims, wherein the enclosing section has at least, in particular exactly, one support surface section. [13] Connection box according to one of the preceding claims, wherein the enclosing section is designed to enclose a solar module on two or three adjacent sides and / or has an L- or U-shaped section for receiving a solar module. [14] Connection box according to one of the preceding claims, wherein the connection box, in particular its side parts, has / have a rear side surface, in particular adjoining the stop surface and / or parallel to the support plane and / or spaced from the mounting surface in the direction away from the support plane. [15] Connection box according to one of the preceding claims, wherein the mounting surfaces, in particular of the side parts, extend in a common plane and / or the stop surfaces, in particular of the side parts, extend in a common plane. [16] Connection box according to one of the preceding claims, wherein the connection box, in particular at least one side part and in particular its insert, has at least one through-opening, in particular from the support plane and / or through the mounting surface, in particular for inserting a screw. [17] Connection box according to one of the preceding claims, wherein the connection box, in particular at least one side part, has at least one projection extending and enclosing the through-opening through the support plane. [18] Connection box according to one of the preceding claims, wherein the inserts are firmly connected, in particular by gluing and / or welding, in particular to the side parts. [19] Connection box according to one of the preceding claims, wherein the base body and side parts are formed together in one piece and / or form the shell-shaped element. [20] Connection box according to one of the preceding claims, wherein a volume enclosed on all sides is formed in the inserts. [21] Connection box according to one of the preceding claims, wherein the enclosing section has a retaining section extending from the contact surface away from the support plane, in particular curved and / or angled and / or extending, in particular terminally, in the direction of the longitudinal extension of the side parts facing away from the base body, in order to stop water pushing over a received solar module. [22] Connection box according to one of the preceding claims, wherein the connection box, in particular the base body and / or the side parts, in particular their inserts, have at least one recess for receiving adhesive for bonding to a carrier of a solar module. [23] Connection box according to one of the preceding claims, wherein the receiving volume, in particular in the base body, has an extension away from the support plane of at least 5 mm and / or a maximum of 50 mm. [24] Connection box according to one of the preceding claims, wherein the stop surface has an extension away from the mounting surface of at least 5 mm, in particular at least 10 mm, and / or a maximum of 50 mm. [25] Connection box according to one of the preceding claims, wherein the mounting surfaces, in particular in the direction of the longitudinal extension of the respective side part and / or the connection box, each have a length of at least 10 mm, in particular at least 20 mm, and / or a maximum of 100 mm. [26] Connection box according to one of the preceding claims, wherein the rear side surfaces, in particular in the direction of the longitudinal extension of the side parts, each have a length of at least 5 mm, in particular at least 10 mm, and / or a maximum of 100 mm. [27] Connection box according to one of the preceding claims, wherein the longitudinal extension of the connection box, in particular in the direction of the longitudinal extension of the base body, is at least 50 mm, in particular at least 75 mm and / or a maximum of 200 mm, in particular a maximum of 150 mm. [28] Solar tile comprising a connection box according to one of the preceding claims and at least one, in particular exactly one, solar module comprising a rear support and a transparent cover as well as solar cells arranged therebetween, wherein the connection box is firmly and in particular non-destructively detachably connected to the solar module, in particular the support, and / or a fixing element projecting through the connection box and the solar module holds the solar module and the connection box together. [29] Solar tile according to one of the preceding claims, wherein support surface sections and / or the enclosing section is glued to the solar module, in particular to a rear support of the solar module and / or the enclosing section is glued to a front cover and in particular also to a support of the solar module. [30] Solar tile according to one of the preceding claims, wherein at least one electronic component, in particular a diode, electrically connected to the solar module is arranged in the receiving volume, in particular of the base body. [31] Solar tile according to one of the preceding claims, wherein electrical connections of the solar module are guided into the receiving volume, in particular of the base body, and in particular from there via an insulated electrical conductor on both sides, in particular of the longitudinal extension of the base body and / or out of and / or through the side parts, and outside the base body and the side parts, in particular each have a terminal plug, in particular a female and a male of the same type. [32] Solar tile according to one of the preceding claims, wherein the solar module is connected to the connection box by means of at least one rivet and / or screw, wherein the rivet and / or screw extends in particular through the solar module or at least one support of the solar module and / or the connection box. [33] Solar tile according to one of the preceding claims, wherein the solar module has at least one through-opening which is aligned with the through-opening, in particular of the side parts, and in which a projection is received, in particular extending the through-opening and enclosing it. [34] Solar tile according to one of the preceding claims, wherein it is a plain tile and the receiving box is arranged opposite the rounded end of the solar module.

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