A photovoltaic curtain wall power generation system

Abstract

This invention relates to a photovoltaic (PV) curtain wall power generation system, comprising PV curtain wall units installed on the surface of a building, and combiner boxes, inverters, and grid-connected cabinets installed inside the building. Multiple PV curtain wall units are connected in series via wires to form a power generation unit. Multiple power generation units are connected in parallel to the combiner boxes, and multiple combiner boxes are connected in parallel to the inverter. The inverter is connected to the grid-connected cabinet, which is connected to the external power grid. The beneficial effects of this invention are: by connecting multiple PV curtain wall units in series to form a power generation unit with a higher voltage, and then using the combiner boxes to generate a larger current, the inverter converts the direct current (DC) to alternating current (AC), which is then connected to the external power grid via the grid-connected cabinet for use. This PV curtain wall power generation system, through multi-layer cascading, forms a modular power supply, reducing energy loss and improving the power generation efficiency of the PV power generation system.

Description

Technical Field

[0001] This invention relates to the field of engineering and construction technology, and in particular to a photovoltaic curtain wall power generation system. Background Technology

[0002] Currently, photovoltaic curtain wall power generation systems on the market have complicated circuit connections, lack modular power supply, and suffer from serious power loss, resulting in low power generation efficiency. Summary of the Invention

[0003] The technical problem to be solved by this invention is to study a photovoltaic curtain wall power generation system with simple circuit connection, modular power supply, low power loss, and improved power generation efficiency of photovoltaic power generation system.

[0004] The technical solution of the present invention to solve the above-mentioned technical problems is as follows:

[0005] A photovoltaic curtain wall power generation system includes photovoltaic power generation curtain wall units laid on the surface of a building, and combiner boxes, inverters and grid-connected cabinets installed inside the building. Multiple photovoltaic power generation curtain wall units are connected in series with wires to form a power generation unit. Multiple power generation units are connected in parallel to the combiner box. Multiple combiner boxes are connected in parallel to the inverter. The inverter is connected to the grid-connected cabinet, and the grid-connected cabinet is connected to the external power grid.

[0006] The beneficial effects of this invention are: by connecting multiple photovoltaic power generation curtain wall units in series to form a power generation unit with a higher voltage, and then connecting multiple power generation units through a combiner box to generate a larger current, and then converting DC power into AC power through an inverter, and connecting it to the external power grid through a grid-connected cabinet for use, this photovoltaic curtain wall power generation system forms a modular power supply through multi-layer cascading, reducing power loss and improving the power generation efficiency of the photovoltaic power generation system.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, it also includes junction boxes; each combiner box has a junction box at its input end, and the power generation unit is connected in parallel to the combiner box through the junction boxes.

[0009] Furthermore, the photovoltaic power generation curtain wall unit includes a regular glass panel, a photovoltaic power generation panel, and a first column installed on the wall. The first column has horizontal beams fixedly connected to both its upper and lower ends, and the beams are set at an angle to the wall. The ends of the two beams are fixedly connected to a vertically installed second column. The upper and lower ends of the side wall of the second column are respectively fixedly connected to a first base for fixing the photovoltaic power generation panel. The second column is fixedly connected to a second base for fixing the regular glass panel on the opposite side of the first base. The other end of the second base is fixedly connected to the first column of the next photovoltaic power generation curtain wall unit. A structural beam is fixedly connected between adjacent first columns.

[0010] Furthermore, a wire groove is provided on the inner side of the first base, and a photovoltaic connector for connecting photovoltaic panels in series is provided in the wire groove; a gusseted adhesive strip is provided between two adjacent wire grooves.

[0011] Furthermore, the photovoltaic connector is an MC4 male and female connector.

[0012] Furthermore, a limiting plate for limiting the conductor is installed inside the cable trough.

[0013] Furthermore, two adjacent photovoltaic power generation curtain wall units are connected in series with wires to form a power generation unit. Attached Figure Description

[0014] Figure 1 This is a circuit diagram of a photovoltaic curtain wall power generation system according to the present invention;

[0015] Figure 2 This is a schematic diagram of the first structure of a photovoltaic power generation curtain wall unit in a photovoltaic curtain wall power generation system according to the present invention;

[0016] Figure 3 This is a schematic diagram of the second structure of a photovoltaic power generation curtain wall unit in a photovoltaic curtain wall power generation system according to the present invention;

[0017] Figure 4 This is a schematic diagram of the third structure of a photovoltaic power generation curtain wall unit in a photovoltaic curtain wall power generation system according to the present invention;

[0018] Figure 5 This is a wiring diagram of a photovoltaic curtain wall power generation system according to the present invention.

[0019] The attached diagram lists the components represented by each number as follows:

[0020] 1. Photovoltaic power generation curtain wall unit; 11. First column; 12. Horizontal beam; 13. Photovoltaic power generation panel; 14. First base; 15. Second column; 16. Second base; 17. Ordinary glass panel; 18. Cable tray; 19. Accordion tape encapsulation; 110. Photovoltaic connector; 111. Limiting plate; 112. Structural beam; 2. Conductor; 3. Power generation unit; 4. Junction box; 5. Combiner box; 6. Inverter; 7. Grid-connected cabinet. Detailed Implementation

[0021] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0022] like Figures 1-5As shown in Embodiment 1 of the present invention, a photovoltaic curtain wall power generation system includes a photovoltaic power generation curtain wall unit 1 laid on the surface of a building, and a combiner box 5, an inverter 6, and a grid-connected cabinet 7 installed inside the building. Multiple photovoltaic power generation curtain wall units 1 are connected in series to form a power generation unit 3 via conductors 2. Multiple power generation units 3 are connected in parallel to the combiner box 5. Multiple combiner boxes 5 are connected in parallel to the inverter 6. The inverter 6 is connected to the grid-connected cabinet 7, and the grid-connected cabinet 7 is connected to the external power grid.

[0023] By connecting multiple photovoltaic power generation curtain wall units 1 in series to form a power generation unit 3 with a higher voltage, and then connecting multiple power generation units 3 through a combiner box 5 to generate a larger current, the DC power is converted into AC power through an inverter 6 and connected to the external power grid through a grid-connected cabinet 7 for use. This photovoltaic curtain wall power generation system forms a modular power supply through multi-layer cascading, reducing power loss and improving the power generation efficiency of the photovoltaic power generation system.

[0024] In practice, the combiner box 5 can be in various specifications such as six inputs and one output, five inputs and one output, and four inputs and one output. Different specifications of combiner box 5 can be reasonably selected according to the number of power generation units 3 that need to be connected in parallel.

[0025] Embodiment 2 of the present invention provides a photovoltaic curtain wall power generation system. Based on Embodiment 1, it further includes a junction box 4. Each combiner box 5 has a junction box 4 at its input end, and the power generation unit 3 is connected in parallel to the combiner box 5 through the junction box 4. The junction box 4 provides a path and control management for the power generation unit 3 to be connected in parallel to the combiner box 5, ensuring that the power supply can be cut off in time in the event of a short circuit or overload, while ensuring that the line is safely and reliably transmitted to the load end.

[0026] According to Embodiment 3 of the present invention, a photovoltaic curtain wall power generation system is provided. Based on Embodiment 2, the photovoltaic power generation curtain wall unit 1 includes a common glass panel 17, a photovoltaic power generation panel 13, and a first column 11 installed on the wall. The upper and lower ends of the first column 11 are horizontally fixedly connected to beams 12, and the beams 12 are set at an angle to the wall. The ends of the two beams 12 are fixedly connected to a vertically installed second column 15. The upper and lower ends of the side wall of the second column 15 are respectively horizontally fixedly connected to a first base 14 for fixing the photovoltaic power generation panel 13. The second column 15 is correspondingly fixedly connected to a second base 16 for fixing the common glass panel 17 on the opposite side of the first base 14. The other end of the second base 16 is fixedly connected to the first column 11 of the next photovoltaic power generation curtain wall unit 1. A structural beam 112 is fixedly connected between adjacent first columns 11. By setting up a first column 11, a crossbeam 12, a first base 14, a second base 16, and a second column 15, the photovoltaic power generation panel 13 and the ordinary glass panel 17 are staggered at intervals, which simplifies the installation. At the same time, it avoids the drawbacks of covering the entire exterior facade of a building with a photovoltaic power generation curtain wall, and the photovoltaic power generation has little interference with daily lighting.

[0027] Embodiment 4 of the present invention discloses a photovoltaic curtain wall power generation system. Based on Embodiment 3, a wire groove 18 is provided on the inner side of the first base 14, and a photovoltaic connector 110 for connecting photovoltaic panels 13 in series is provided in the wire groove 18; a gusseted adhesive strip 19 is provided between two adjacent wire grooves 18. The gusseted adhesive strip 19 can prevent the conductors 2 from being exposed to wind, sun and rain for a long time, thereby improving the service life of the conductors 2.

[0028] Embodiment 5 of the present invention provides a photovoltaic curtain wall power generation system. Based on Embodiment 4, the photovoltaic connector 110 is an MC4 male-female connector. The MC4 male-female connectors are terminated to each other through an interlocking device with slots, requiring special tools to disconnect, thus preventing accidental disconnection of the connectors.

[0029] Embodiment 6 of the present invention provides a photovoltaic curtain wall power generation system. Based on Embodiment 5, a limiting plate 111 for limiting the conductor 2 is provided in the cable tray 18. In specific implementation, the limiting plate 111 is a rectangular plate embedded in the cable tray 18. This rectangular plate has multiple through holes of a size that match the conductor 2, so that the conductor 2 can pass through and be limited.

[0030] Embodiment 7 of the present invention provides a photovoltaic curtain wall power generation system, which, based on Embodiment 6, connects two adjacent photovoltaic power generation curtain wall units 1 in series via wires 2 to form a power generation unit 3.

[0031] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A photovoltaic curtain wall power generation system, characterized in that, The system includes photovoltaic power generation curtain wall units (1) laid on the surface of the building, and combiner boxes (5), inverters (6), and grid-connected cabinets (7) installed inside the building. Multiple photovoltaic power generation curtain wall units (1) are connected in series to form power generation units (3) via conductors (2). Multiple power generation units (3) are connected in parallel to the combiner boxes (5), and multiple combiner boxes (5) are connected in parallel to the inverters (6). The inverters (6) are connected to the grid-connected cabinets (7), and the grid-connected cabinets (7) are connected to the external power grid. The system also includes junction boxes (4), with each combiner box (5) having a junction box (4) at its input end. The power generation units (3) are connected in parallel to the combiner boxes (5) via the junction boxes (4). The photovoltaic power generation curtain wall unit (1) includes a common glass panel (17), a photovoltaic panel (13), and a set of... The first column (11) on the wall has horizontal beams (12) fixedly connected to both the upper and lower ends of the first column (11), and the beams (12) are set at an angle to the wall. The ends of the two beams (12) are fixedly connected by a vertically set second column (15). The upper and lower ends of the side wall of the second column (15) are respectively horizontally fixedly connected to a first base (14) for fixing the photovoltaic power generation panel (13). The second column (15) is fixedly connected to a second base (16) for fixing the ordinary glass panel (17) on the opposite side of the first base (14). The other end of the second base (16) is fixedly connected to the first column (11) of the next photovoltaic power generation curtain wall unit (1). A structural beam (112) is fixedly connected between adjacent first columns (11).

2. The photovoltaic curtain wall power generation system according to claim 1, characterized in that, The first base (14) has a wire groove (18) inside, and a photovoltaic connector (110) for connecting the photovoltaic power generation panel (13) in series is provided in the wire groove (18); a gusseted tape (19) is provided between two adjacent wire grooves (18).

3. The photovoltaic curtain wall power generation system according to claim 2, characterized in that, The photovoltaic connector (110) is an MC4 male and female connector.

4. The photovoltaic curtain wall power generation system according to claim 3, characterized in that, A limiting plate (111) is provided in the groove (18) to limit the conductor (2).

5. The photovoltaic curtain wall power generation system according to claim 4, characterized in that, Two adjacent photovoltaic power generation curtain wall units (1) are connected in series to form a power generation unit (3) via wires (2).

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