Photovoltaic lighting unit and assembled photovoltaic lighting roof system

Abstract

The utility model discloses a photovoltaic lighting unit and assembly type photovoltaic lighting roof system, this photovoltaic lighting unit includes: photovoltaic glass, attached frame and photovoltaic switch, the edge of photovoltaic glass is connected in attached frame, is equipped with the cavity in attached frame, the photovoltaic switch is installed in the cavity, and is electrically connected in photovoltaic glass. The utility model discloses a photovoltaic glass, attached frame and photovoltaic switch combination form a complete photovoltaic lighting unit, so that photovoltaic lighting unit can realize modular production through factory prefabrication, reduces the process of on -the -spot assembly, thereby greatly improves construction efficiency, reduces the construction period, simultaneously, the photovoltaic switch hides in the cavity of attached frame, avoids the damage of electronic component caused by the exposure of electronic component, can also improve building appearance neatness, adapts to efficient construction and beautiful demand.

Description

Technical Field

[0001] This utility model relates to the field of building photovoltaic technology, and in particular to a photovoltaic daylighting unit and a prefabricated photovoltaic daylighting roof system. Background Technology

[0002] With the popularization of building-integrated photovoltaics (BIPV) technology, photovoltaic (PV) skylights, combining lighting and power generation functions, have become an important component of green buildings. However, existing PV skylights suffer from two major problems: First, the construction method is outdated. Traditional PV skylights often involve the assembly of photovoltaic glass, supporting frames, and electrical components piecemeal on-site, which is greatly affected by weather, site conditions, and personnel skills, resulting in low construction efficiency and difficulty in controlling the construction period. Second, the problem of exposed electrical components is prominent. PV circuit breakers and connecting cables are often exposed to the external environment, making them susceptible to malfunctions due to rain and dust, affecting the building's appearance, and increasing later maintenance costs. Therefore, there is an urgent need for a PV skylight unit and skylight system that can be prefabricated in a factory, modularly installed, and whose electrical components can be concealed to solve the above pain points. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of low construction efficiency and exposed electrical components in existing photovoltaic skylight systems, and to provide a photovoltaic skylight unit and a prefabricated photovoltaic skylight system.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: In a first aspect, this utility model provides a photovoltaic light-collecting unit, including: photovoltaic glass, a subframe, and a photovoltaic switch; the edge of the photovoltaic glass is connected to the subframe, the subframe has a cavity, the photovoltaic switch is installed in the cavity, and is electrically connected to the photovoltaic glass.

[0005] In one embodiment, the subframe includes multiple corner brackets and multiple profiles having the cavity, the multiple profiles being connected by the corner brackets to form the subframe.

[0006] Secondly, this utility model embodiment also provides a prefabricated photovoltaic skylight system, including: a photovoltaic skylight unit as described above, and further including a first connecting component, a second connecting component, and a keel frame; the first connecting component is used to connect to the main roof structure, and the end of the first connecting component away from the main roof structure is connected to the inner side of the keel frame; the outer side of the keel frame is connected to the second connecting component, and the end of the second connecting component away from the keel frame is connected to the subframe, and several keel frames are arranged in parallel; multiple photovoltaic skylight units are provided between two adjacent keel frames, and the multiple photovoltaic skylight units are arranged sequentially along the length direction of the keel frame.

[0007] In one embodiment, the keel frame includes multiple keels connected end to end in sequence. The first connecting component and the second connecting component are both located at the splice between two adjacent keels and connected to the two adjacent keels.

[0008] In one embodiment, the keel frame further includes inserts; the two ends of the inserts are respectively inserted into two adjacent keels.

[0009] In one embodiment, the first connecting component includes an ear plate and a connector, the main roof structure is provided with an embedded part, the second ear plate is used to connect to the embedded part, and the two ends of the connector are respectively connected to the second ear plate and the keel.

[0010] In one embodiment, the connector is T-shaped and includes an X-direction connecting plate and a Y-direction connecting plate perpendicularly connected to the X-direction connecting plate. The X-direction connecting plate has an X-direction elongated hole, and the Y-direction connecting plate has a Y-direction elongated hole. The ear plate is connected to the X-direction elongated hole by a first bolt, and the keel is connected to the Y-direction elongated hole by a second bolt.

[0011] In one embodiment, the second connecting component has a connecting portion with a circular cross-section, and the subframe has a corresponding connecting groove with a circular cross-section. The connecting portion is movably connected to the connecting groove so that the subframe is rotatably connected to the second connecting component.

[0012] In one embodiment, the second connecting component and the keel are connected by a fixing bolt, and the fixing bolt is also connected to a pressure block, with the second connecting component located between the pressure block and the keel.

[0013] In one embodiment, a decorative line is connected at the joint between two adjacent photovoltaic light-collecting units, and the decorative line is fixed to the side of the subframe away from the keel frame by a waterproof adhesive strip.

[0014] Compared with existing technologies, the advantages of this utility model's photovoltaic daylighting unit and prefabricated photovoltaic daylighting roof system are as follows: by combining photovoltaic glass, subframe, and photovoltaic switch to form a complete photovoltaic daylighting unit, the photovoltaic daylighting unit can be modularly produced through factory prefabrication, reducing the on-site assembly process and thus greatly improving construction efficiency and shortening the construction period; at the same time, the photovoltaic switch is hidden inside the cavity of the subframe, avoiding damage to electronic components caused by exposed electronic components, and also improving the cleanliness of the building's appearance, meeting the requirements of efficient construction and aesthetics.

[0015] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the assembly of the subframe provided in an embodiment of this utility model; Figure 2 A schematic diagram of the structure of the appendix provided in the embodiment of this utility model; Figure 3 This is a schematic diagram of the structure of the photovoltaic light-collecting unit provided in an embodiment of the present utility model; Figure 4 A schematic diagram of the connection structure between the main roof structure and the first connecting component provided in an embodiment of this utility model; Figure 5 A schematic diagram illustrating the connection structure between the main roof structure, the first connecting component, and the keel frame provided in an embodiment of this utility model; Figure 6 This is a schematic diagram of the prefabricated photovoltaic skylight system provided in an embodiment of the present utility model; Figure 7 A first-view sectional view of the prefabricated photovoltaic skylight system provided in this embodiment of the utility model; Figure 8 A second-view sectional view of the prefabricated photovoltaic skylight system provided in an embodiment of this utility model.

[0018] Figure Labels 1. Photovoltaic glass; 2. Subframe; 21. Corner bracket; 22. Profile; 23. Connecting groove; 3. Photovoltaic switch; 4. First connecting assembly; 41. Ear plate; 42. Connector; 421. Y-direction connecting plate; 422. Second bolt; 43. Pin; 44. Screw; 5. Second connecting assembly; 51. Connecting part; 52. Fixing bolt; 53. Pressure block; 6. Keel frame; 61. Keel; 62. Insert; 7. Main roof structure; 71. Embedded parts; 8. Decorative lines; 9. Waterproof sealing strip. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0026] See Figures 1 to 3 As shown, this utility model provides a specific embodiment of a photovoltaic light-collecting unit, including: photovoltaic glass 1, subframe 2 and photovoltaic switch 3; the edge of the photovoltaic glass 1 is connected to the subframe 2, the subframe 2 has a cavity (not shown in the figure), the photovoltaic switch 3 is installed in the cavity and electrically connected to the photovoltaic glass 1.

[0027] Specifically, this embodiment integrates the photovoltaic glass 1, subframe 2, and photovoltaic switch 3 into a complete module (i.e., a photovoltaic daylighting unit). This allows for modular production through factory prefabrication. The photovoltaic glass 1, subframe 2, and photovoltaic switch 3 are processed and assembled in the factory to form a complete photovoltaic daylighting unit, which is then transported to the construction site for direct installation. Simultaneously, the photovoltaic switch 3 is concealed within the cavity of the subframe 2, preventing exposed electrical components. This integrated photovoltaic daylighting unit enables a "unit processing - overall transportation - direct on-site installation" model, avoiding the cumbersome process of piecemeal on-site assembly, reducing the impact of external factors such as weather and site conditions on construction, and significantly shortening the construction cycle. Secondly, it optimizes structural safety and aesthetic appearance. The photovoltaic switch 3 is built into the cavity of the subframe 2, not only preventing cables and the photovoltaic switch 3 from being exposed to the external environment, preventing electrical faults caused by rainwater and dust erosion, and extending the equipment's lifespan, but also eliminating the destructive effect of exposed components on the building's appearance, resulting in a clean and unified visual effect for the photovoltaic daylighting roof and enhancing the building's aesthetics.

[0028] See Figure 1 and Figure 2 As shown, in a specific embodiment, the subframe 2 includes multiple corner brackets 21 and multiple profiles 22 with cavities. The multiple profiles 22 are connected by the corner brackets 21 to form the subframe 2.

[0029] Specifically, the end of the profile 22 is provided with a mounting groove (not shown in the figure). The corner bracket 21 is inserted into the mounting groove of the adjacent profile 22 and fixed by self-tapping screws or special bolts for corner brackets, thereby forming a rectangular or irregularly shaped subframe 2. In this embodiment, the connection method between the corner bracket 21 and the profile 22 enables standardized factory assembly. Compared with traditional welding processes, this greatly improves assembly efficiency and eliminates the need for on-site welding, avoiding the impact of welding deformation on the accuracy of the subframe 2. At the same time, the corner bracket 21 is made of galvanized steel plate or aluminum alloy, which can form a rigid connection with the aluminum alloy profile 22, ensuring that the subframe 2 is not easily deformed during transportation and installation, ensuring the overall structural stability of the photovoltaic light-collecting unit, and further adapting to the "unit as a whole transportation and installation" requirements of this utility model.

[0030] In one specific embodiment, the photovoltaic glass 1 is connected and fixed to the subframe 2 by structural adhesive (not shown in the figure), which is suitable for factory prefabrication requirements. The adhesive can be precisely applied and cured in a cleanroom, avoiding the influence of the environment on on-site operations. The structural adhesive can enhance the sealing performance, prevent rainwater from seeping into the cavity of the subframe 2 and damaging the photovoltaic switch 3, and also buffer the difference in thermal expansion and contraction between the photovoltaic glass 1 and the subframe 2, ensuring the stability of the unit structure.

[0031] See Figures 4 to 8 As shown, this utility model also provides a specific embodiment of a prefabricated photovoltaic skylight system, including: a photovoltaic skylight unit as described above, and further including a first connecting component 4, a second connecting component 5, and a keel frame 6; the first connecting component 4 is used to connect to the main roof structure 7, and the end of the first connecting component 4 away from the main roof structure 7 is connected to the inner side of the keel frame 6; the outer side of the keel frame 6 is connected to the second connecting component 5, and the end of the second connecting component 5 away from the keel frame 6 is connected to the subframe 2, and several keel frames 6 are arranged in parallel; multiple photovoltaic skylight units are provided between two adjacent keel frames 6, and the multiple photovoltaic skylight units are arranged sequentially along the length direction of the keel frame 6.

[0032] See Figures 5 to 7 As shown, specifically, in this embodiment, the keel frame 6 is connected to the main roof structure 7 via the first connecting component 4, and the photovoltaic light-collecting unit is connected to the keel frame 6 via the second connecting component 5, forming a complete skylight system. The main roof structure 7 provides support for the keel frame 6 via the first connecting component 4, and the keel frame 6 serves as the foundation structure supporting the photovoltaic light-collecting unit. The photovoltaic light-collecting unit is connected to the keel frame 6 via the second connecting component 5, generating electricity and collecting light under illumination. This prefabricated structural design makes the installation and disassembly of the entire skylight system very convenient, greatly shortening the construction cycle. At the same time, the connections between the various components are firm and reliable, ensuring the stability of the skylight system under different environmental conditions.

[0033] In one specific embodiment, the keel frame 6 includes multiple keels 61 connected end to end in sequence. The first connecting component 4 and the second connecting component 5 are both located at the splice between two adjacent keels 61 and connected to the two adjacent keels 61.

[0034] Specifically, the keel 61 is prefabricated in the factory into standard length sections, with splicing interfaces reserved at the ends of each section. During on-site construction, the ends of adjacent keels 61 are joined together, and the roof main structure 7 is connected through the first connecting component 4 at the splicing point. At the same time, the photovoltaic daylighting unit is connected through the second connecting component 5. This structure of standard keel sections 61 facilitates mass production and transportation in the factory. Compared with a whole long keel, it reduces transportation costs and avoids deformation of the long keel during transportation. The connecting components are concentrated at the splicing point, which can transfer the load of the photovoltaic daylighting unit and the external wind load to the roof main structure 7 through the splicing point, resulting in more uniform stress and stronger system stability. At the same time, on-site construction only requires splicing of the keel 61 and fixing of the connecting components. There is no need to set additional connection points in the middle of the keel 61, making the construction steps simpler and further shortening the construction period.

[0035] See Figure 7 As shown, in one specific embodiment, the keel frame 6 further includes a core 62; the two ends of the core 62 are respectively inserted into two adjacent keel frames 61.

[0036] Specifically, the insert 62 effectively fills the splicing gap between the two keels 61, making the splice a rigid whole, avoiding structural shaking caused by the splicing gap, and ensuring the stability of the keel frame 6 when bearing the photovoltaic light-collecting unit; at the same time, the guiding effect of the insert 62 can shorten the splicing time of the keel 61 on site, further improve construction efficiency, and meet the needs of overall prefabricated construction.

[0037] In one specific embodiment, the first connecting component 4 includes an ear plate 41 and a connector 42. The roof main structure 7 is provided with an embedded part 71. The second ear plate 41 is used to connect to the embedded part 71. The two ends of the connector 42 are respectively connected to the second ear plate 41 and the keel 61.

[0038] Specifically, during the operation, the embedded part 71 is pre-installed on the main roof structure 7, the ear plate 41 is connected to the embedded part 71 via the pin 43, and the connecting piece 42 then connects the ear plate 41 to the keel 61, thereby stably fixing the keel frame 6 to the main roof structure 7. This structural connection method is simple and reliable, can adapt to different types of main roof structures 7 and embedded part 71 forms, and achieves a stable connection between the keel frame 6 and the main roof structure 7.

[0039] In one specific embodiment, the connector 42 is T-shaped and includes an X-direction connecting plate (not shown in the figure) and a Y-direction connecting plate 421 perpendicularly connected to the X-direction connecting plate. The X-direction connecting plate is provided with an X-direction elongated hole (not shown in the figure), and the Y-direction connecting plate 421 is provided with a Y-direction elongated hole (not shown in the figure). The ear plate 41 is connected to the X-direction elongated hole by a first bolt (not shown in the figure), and the keel 61 is connected to the Y-direction elongated hole by a second bolt 422.

[0040] Specifically, by designing the connector 42 as a T-shape, the connection position can be fine-tuned through the elongated holes on the X-direction connecting plate and the Y-direction connecting plate 421, thereby improving installation flexibility. During the installation process, installers can fine-tune the installation position of the keel frame 6 according to actual installation needs by adjusting the position of the first bolt in the X-direction elongated hole and the position of the second bolt 422 in the Y-direction elongated hole, so that it can better match with the roof main structure 7 and other components. This structure greatly improves the flexibility and accuracy of installation and reduces problems caused by installation errors. In addition, after the connector 42 is adjusted into place, it is fixed to the keel 61 by screws 44, avoiding deformation of the connector 42 due to the large gravitational load generated after the installation of the photovoltaic daylighting unit.

[0041] In one specific embodiment, the second connecting component 5 is provided with a connecting part 51 with a circular cross-section, and the subframe 2 is provided with a connecting groove 23 with a circular cross-section. The connecting part 51 is movably connected to the connecting groove 23 so that the subframe 2 is rotatably connected to the second connecting component 5.

[0042] Specifically, by designing the connecting part 51 of the second connecting component 5 to have a circular cross-section and cooperating with the corresponding circular connecting groove 23 on the subframe 2, the subframe 2 is rotatably connected to the second connecting component 5, thereby enabling the photovoltaic light-collecting unit to be adjusted according to the illumination angle. When it is necessary to adjust the angle of the photovoltaic light-collecting unit to obtain a better illumination effect, the subframe 2 can rotate around the connecting part 51 of the second connecting component 5 within the connecting groove 23 to adjust the angle, thereby improving the adaptability of the photovoltaic light-collecting unit to different illumination angles and effectively improving the photovoltaic power generation efficiency.

[0043] In one specific embodiment, the second connecting component 5 and the keel 61 are connected by a fixing bolt 52, and the fixing bolt 52 is also connected to a pressure block 53. The second connecting component 5 is located between the pressure block 53 and the keel 61.

[0044] Specifically, the fixing bolt 52 passes through the pressure block 53, the second connecting component 5, and the keel 61. By tightening the fixing bolt 52, the pressure block 53 presses firmly against the second connecting component 5, thereby firmly fixing the second connecting component 5 to the keel 61. This connection method is simple and reliable, can withstand large external forces, and ensures the stability of the connection between the photovoltaic light-collecting unit and the keel frame 6.

[0045] See Figure 8 As shown, in one specific embodiment, a decorative line 8 is connected at the splicing point between two adjacent photovoltaic light-collecting units. The decorative line 8 is fixed to the side of the subframe 2 away from the keel frame 6 by a waterproof adhesive strip 9.

[0046] Specifically, the decorative molding 8 beautifies the joint between adjacent photovoltaic daylighting units, making it more aesthetically pleasing. The waterproof sealing strip 9 fills the gap between the decorative molding 8 and the subframe 2, preventing rainwater from seeping into the daylighting system from the joint. The resulting technical benefits are improved aesthetics and waterproofing performance of the daylighting system, extending its lifespan.

[0047] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A photovoltaic light-collecting unit, characterized in that, include: A photovoltaic glass, a subframe, and a photovoltaic switch; the edge of the photovoltaic glass is connected to the subframe, the subframe has a cavity, the photovoltaic switch is installed in the cavity, and is electrically connected to the photovoltaic glass.

2. The photovoltaic light-collecting unit according to claim 1, characterized in that, The subframe includes multiple corner brackets and multiple profiles with cavities, and the multiple profiles are connected by the corner brackets to form the subframe.

3. A prefabricated photovoltaic daylighting roof system, characterized in that, include: The photovoltaic light-collecting unit as described in claim 1 or 2 further includes a first connecting component, a second connecting component, and a keel frame; the first connecting component is used to connect to the main roof structure, and the end of the first connecting component away from the main roof structure is connected to the inner side of the keel frame; the outer side of the keel frame is connected to the second connecting component, and the end of the second connecting component away from the keel frame is connected to the subframe, and a plurality of keel frames are arranged in parallel; a plurality of photovoltaic light-collecting units are provided between two adjacent keel frames, and the plurality of photovoltaic light-collecting units are arranged sequentially along the length direction of the keel frame.

4. The prefabricated photovoltaic skylight system according to claim 3, characterized in that, The keel frame includes multiple keels connected end to end in sequence. The first connecting component and the second connecting component are both located at the splice between two adjacent keels and connected to the two adjacent keels.

5. The prefabricated photovoltaic skylight system according to claim 4, characterized in that, The keel frame also includes inserts; the two ends of the inserts are respectively inserted into the two adjacent keels at the beginning and end.

6. The prefabricated photovoltaic skylight system according to claim 4, characterized in that, The first connecting component includes an ear plate and a connector. The main roof structure is provided with an embedded part. The second ear plate is used to connect to the embedded part. The two ends of the connector are respectively connected to the second ear plate and the keel.

7. The prefabricated photovoltaic skylight system according to claim 6, characterized in that, The connector is T-shaped and includes an X-direction connecting plate and a Y-direction connecting plate perpendicularly connected to the X-direction connecting plate. The X-direction connecting plate has an X-direction elongated hole, and the Y-direction connecting plate has a Y-direction elongated hole. The ear plate is connected to the X-direction elongated hole by a first bolt, and the keel is connected to the Y-direction elongated hole by a second bolt.

8. The prefabricated photovoltaic skylight system according to claim 4, characterized in that, The second connecting component has a connecting part with a circular cross-section, and the subframe has a corresponding connecting groove with a circular cross-section. The connecting part is movably connected to the connecting groove so that the subframe is rotatably connected to the second connecting component.

9. The prefabricated photovoltaic skylight system according to claim 4, characterized in that, The second connecting component and the keel are connected by a fixing bolt, and the fixing bolt is also connected to a pressure block. The second connecting component is located between the pressure block and the keel.

10. The prefabricated photovoltaic skylight system according to claim 3, characterized in that, Decorative lines are connected at the joint between two adjacent photovoltaic light-collecting units. The decorative lines are fixed to the side of the subframe away from the keel frame by waterproof adhesive strips.

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