Photovoltaic power generation structure and building integrated photovoltaic system

Abstract

The utility model relates to a photovoltaic power generation structure and a building integrated photovoltaic system. The photovoltaic power generation structure comprises a photovoltaic module, a first frame, a second frame and a metal plate, and is connected to a packaging plate of the photovoltaic module through the metal plate and the first frame, so that the photovoltaic module is limited and supported along the end face of the lamination direction, and the bearing capacity and the installation reliability of the photovoltaic power generation structure are enhanced; the anti-load capability of wind pressure resistance, snow pressure resistance and the like of the photovoltaic power generation structure is greatly improved, so that the reliability of mounting the photovoltaic power generation structure on a building is improved; the second frame is connected to the side face of the photovoltaic module, so that the end face of the photovoltaic module in the arrangement direction is limited and supported, meanwhile, due to the fact that the second frame and the first frame are detachably separated, the structural style of the photovoltaic module is more diversified, and various building facade effects such as the exposed frame effect and the hidden frame effect can be achieved.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic technology, and in particular to photovoltaic power generation structures and photovoltaic building integrated systems. Background Art

[0002] After the "carbon peak and carbon neutrality" goals were proposed, a wave of green development has been set off in all walks of life across the country. In the construction industry, various green buildings and ultra-low energy consumption buildings have also been considered as the future development direction of construction in recent years. In the context of building energy conservation and carbon reduction, the photovoltaic industry's power generation continues to increase and costs gradually decrease. The integration of photovoltaics and buildings has ushered in rapid development and has become an important way to achieve carbon neutrality in buildings.

[0003] A safe and reliable integration method is a basic requirement for building structural safety and a necessary guarantee for realizing photovoltaic building integration. However, in the related technology, when photovoltaic modules are installed on buildings, there is a problem of poor load resistance. Utility Model Content

[0004] Based on this, it is necessary to provide a photovoltaic power generation structure to address the problem of poor load resistance when existing photovoltaic modules are installed on buildings.

[0005] A photovoltaic power generation structure, comprising:

[0006] A photovoltaic module, comprising a cell and a packaging plate for packaging the cell;

[0007] A first frame is arranged along a lamination direction with the photovoltaic module, one end of the first frame is connected to the photovoltaic module, and the other end of the first frame is used to be connected to a building;

[0008] A second frame is arranged along the arrangement direction of the photovoltaic assembly and connected to the side of the photovoltaic assembly; the second frame is detachably connected to the first frame; the arrangement direction intersects with the lamination direction;

[0009] The photovoltaic power generation structure further includes a metal plate, and along the lamination direction, the metal plate is connected between the packaging plate and the first frame.

[0010] In one embodiment, a first adhesive layer is connected between the first frame and the packaging board; and / or

[0011] A second adhesive layer is connected between the second frame and the side surface of the photovoltaic component.

[0012] In one embodiment, the photovoltaic power generation structure further includes a first fastener for connecting the first frame and the second frame.

[0013] In one of the embodiments, along the lamination direction, the lamination surface of the photovoltaic module is flush with the surface of the second frame.

[0014] In one of the embodiments, along the lamination direction, a surface of the second frame is protruding relative to a lamination surface of the photovoltaic module.

[0015] In one of the embodiments, a third adhesive layer is connected between the metal plate and the packaging plate.

[0016] In one embodiment, the photovoltaic power generation structure further includes an angle code connected to a side surface of the first frame.

[0017] In one of the embodiments, the photovoltaic power generation structure further includes a plurality of reinforcing members, the plurality of reinforcing members are arranged at intervals, both ends of the reinforcing members are connected to the angle brackets, and one side surface of the reinforcing member is connected to the metal plate.

[0018] In one of the embodiments, the reinforcing member and the corner bracket are connected by a second fastener; and a fourth adhesive layer is connected between the reinforcing member and the metal plate.

[0019] A photovoltaic building integrated system comprises a plurality of photovoltaic power generation structures as described above.

[0020] The above-mentioned photovoltaic power generation structure includes a photovoltaic module, a first frame, a second frame and a metal plate. The metal plate and the first frame are connected to the packaging plate of the photovoltaic module, so as to limit and support the end face of the photovoltaic module along the lamination direction, thereby enhancing the bearing capacity and installation reliability of the photovoltaic power generation structure, greatly improving the ability of the photovoltaic power generation structure to resist wind pressure, snow pressure and other loads, and thus improving the reliability of the photovoltaic power generation structure installed on the building; the second frame is connected to the side of the photovoltaic module, so as to limit and support the end face of the photovoltaic module along the arrangement direction. At the same time, since the second frame and the first frame are detachably separated, the structural style is more diversified, so that a variety of building facade effects can be achieved, such as visible frame effect and hidden frame effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG. 1 is a schematic diagram of a photovoltaic power generation structure provided in an embodiment of the present application.

[0022] FIG. 2 is a partial schematic diagram of the photovoltaic power generation structure shown in FIG. 1 .

[0023] FIG. 3 is an exploded schematic diagram of the photovoltaic power generation structure shown in FIG. 2 .

[0024] FIG. 4 is a schematic diagram of a photovoltaic power generation structure provided in another embodiment of the present application.

[0025] Figure numbers: 10, photovoltaic power generation structure; 100, photovoltaic module; 110, battery cell; 120, packaging board; 210, first frame; 220, first adhesive layer; 310, second frame; 320, second adhesive layer; 330, first fastener; 410, metal plate; 420, third adhesive layer; 430, corner code; 440, reinforcement member; 450, second fastener; 460, fourth adhesive layer. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0027] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0028] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0029] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0030] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0032] With the development of society, solar energy has received attention and importance as a green and clean energy. Photovoltaic modules are used to convert solar energy into electrical energy and are one of the important ways to utilize solar energy. Among them, frameless photovoltaic modules can improve the utilization rate of sunlight and are an important research direction of photovoltaic modules. Due to the structural particularity of frameless photovoltaic modules, they are easy to break and difficult to install. Building Integrated Photovoltaic (BIPV) is a new installation method that breaks the barriers between the traditional photovoltaic industry and the construction industry, allowing photovoltaic modules to be more widely used. A safe and reliable integration method is a necessary guarantee for realizing photovoltaic building integration. However, in the related art, when photovoltaic modules are installed on buildings, there is a problem of poor load resistance. Based on this, the present application provides a photovoltaic power generation structure that can solve the above problems. The photovoltaic power generation structure provided in one embodiment of the present application will be described in detail below in conjunction with the accompanying drawings.

[0033] Referring to FIG. 1 and FIG. 2 , a photovoltaic power generation structure 10 provided in an embodiment of the present application includes a photovoltaic module 100, a first frame 210, a second frame 310 and a metal plate 410. The photovoltaic module 100 includes a cell 110 and a packaging plate 120 for packaging the cell 110. The first frame 210 and the photovoltaic module 100 are arranged along a lamination direction, one end of the first frame 210 is connected to the photovoltaic module 100, and the other end of the first frame 210 is used to connect to a building. The second frame 310 and the photovoltaic module 100 are arranged along an arrangement direction and connected to the side of the photovoltaic module 100. The second frame 310 is detachably connected to the first frame 210. The arrangement direction intersects with the lamination direction. Along the lamination direction, the metal plate 410 is connected between the packaging plate 120 and the first frame 210. As shown in FIG. 1 , the arrangement direction is indicated by arrow X, and the lamination direction is indicated by arrow Y.

[0034] The photovoltaic power generation structure 10 is connected to the photovoltaic module 100 through the metal plate 410 and the first frame 210, so as to limit the end face of the photovoltaic module 100 along the lamination direction, enhance the bearing capacity and installation reliability of the photovoltaic power generation structure 10, greatly improve the ability of the photovoltaic power generation structure 10 to resist wind pressure, snow pressure and other loads, and thus improve the reliability of the photovoltaic power generation structure 10 installed on the building; the second frame 310 is connected to the side of the photovoltaic module 100, so as to limit the end face of the photovoltaic module 100 along the arrangement direction. Among them, the second frame 310 includes a plurality of second frames 310, which are respectively arranged around the photovoltaic module 100, and play a role in protecting and sealing the side of the photovoltaic module 100, thereby blocking water vapor and dust, improving its sealing effect, and thus improving the reliability of the use of the photovoltaic module 100. At the same time, since the second frame 310 and the first frame 210 are detachably separated, the structural style is more diversified, so that a variety of building facade effects can be achieved, such as the decorative open frame effect shown in Figure 4 and the hidden frame effect shown in Figure 2.

[0035] Among them, the metal plate 410 is a common roofing metal sheet, which can be a galvanized / aluminum-zinc / galvanized aluminum-magnesium steel plate, an aluminum plate, an aluminum-magnesium-manganese alloy plate, a titanium-zinc plate, etc. In one embodiment, in order to improve the corrosion resistance of the metal plate, a metal coating can be provided on the surface of the metal plate. The metal coating can be an aluminum-zinc coating, a zinc-aluminum-magnesium coating, a zinc-magnesium-manganese coating, etc. A fingerprint-resistant layer can be provided on the surface of the metal coating. The fingerprint-resistant layer can be one of a chromium passivation layer, a chromium-free passivation layer, a common fingerprint-resistant layer, a chromium-free fingerprint-resistant layer, a chromium-free high weather-resistant fingerprint-resistant layer, etc. The fingerprint-resistant layer can prevent the metal coating from adhering to the fingerprints of the operator during the production and processing process, affecting its appearance, and can also improve the corrosion resistance and wear resistance of the metal coating.

[0036] Among them, the first frame 210 and the second frame 310 can be made of metal, such as aluminum alloy. Since the second frame 310 and the first frame 210 are detachably separated, various building facade effects can be achieved by changing the shape of the second frame 310. For example, in the embodiment shown in Figure 1, for the photovoltaic power generation structure 10 located on the right side, along the lamination direction, the lamination surface of the photovoltaic component 100 is flush with the surface of the second frame 310, so that a hidden frame effect can be achieved and the overall aesthetics can be improved. Of course, you can also refer to the design of the photovoltaic power generation structure 10 on the left side of Figure 4 and Figure 1. Along the lamination direction, the surface of the second frame 310 protrudes relative to the lamination surface of the photovoltaic component 100, so that a decorative visible frame effect can be achieved according to actual needs.

[0037] Referring to FIG. 1 and FIG. 2 , in one embodiment, the photovoltaic power generation structure 10 further includes a first fastener 330 for connecting the first frame 210 and the second frame 310. In this way, the first frame 210 and the second frame 310 can be detachably connected, thereby facilitating the realization of different building facade effects according to actual needs. The first fastener 330 can be specifically a screw or the like.

[0038] Referring to FIG. 1 and FIG. 2, in one embodiment, a first adhesive layer 220 is connected between the first frame 210 and the metal plate 410. Further, a second adhesive layer 320 is connected between the second frame 310 and the side of the photovoltaic module 100. By bonding the photovoltaic module 100 to the first frame 210 and the second frame 310 through the adhesive layer, factory prefabrication can be achieved, and the photovoltaic module 100 can be laminated with the first frame 210 and the second frame 310 in advance at high temperatures, thereby improving assembly efficiency and reducing on-site construction costs and cycles. The first adhesive layer 220 can be silicone structural adhesive, organic silicon structural adhesive, epoxy structural adhesive, polyurethane structural adhesive, acrylate structural adhesive, etc., and the thickness of the first adhesive layer can be 0.1mm-3mm, which can ensure bonding strength. The second adhesive layer 320 can be silicone, polyurethane sealant, acrylic sealant, epoxy resin sealant, etc., and has good weather resistance, sealing and water resistance.

[0039] Referring to FIG. 1 and FIG. 2, in one embodiment, a third adhesive layer 420 is connected between the metal plate 410 and the packaging plate 120. In this way, the metal plate 410 and the packaging plate 120 can be bonded together, and the steel-aluminum structure can be integrated without welding and screws; wherein, it can be a hot bonding method, for example, the photovoltaic component 100 and the metal plate 410 are laminated together at high temperature through a packaging film; or it can be a room temperature cold bonding method, the laminated photovoltaic component 100 is bonded to the metal plate 410, which can realize factory prefabrication, improve assembly efficiency, and reduce on-site construction costs and cycles. The third adhesive layer 420 can be an adhesive film such as EVA, POE, EPE, etc., or it can be a cold bonding type silicone structural adhesive, silicone structural adhesive, epoxy structural adhesive, polyurethane structural adhesive, acrylate structural adhesive, etc.

[0040] 1 and 2, in one embodiment, the photovoltaic power generation structure 10 further includes an angle bracket 430, which is connected to the side of the first frame 210. Under the action of external loads such as wind load and snow load, the angle bracket 430 is responsible for effectively transmitting these forces to the main structure of the building, ensuring that the entire photovoltaic power generation structure 10 can remain stable and safe under adverse weather conditions.

[0041] Referring to FIG. 1 , in one embodiment, the photovoltaic power generation structure 10 further includes a plurality of reinforcing members 440, and the plurality of reinforcing members 440 can be arranged at intervals along the long side direction or the short side direction of the photovoltaic module 100. The two ends of the reinforcing member 440 are connected to the corner code 430, and one of the side surfaces of the reinforcing member 440 is connected to the metal plate 410. Specifically, the reinforcing member 440 and the corner code 430 are connected by a second fastener 450; a fourth adhesive layer 460 is connected between the reinforcing member 440 and the metal plate 410. By providing the reinforcing member 440, the supporting strength of the photovoltaic power generation structure 10 is enhanced, and the bearing capacity and load resistance of the photovoltaic power generation structure 10 are further improved. The fourth adhesive layer 460 can be a silicone structural adhesive, an organic silicon structural adhesive, an epoxy structural adhesive, a polyurethane structural adhesive, an acrylate structural adhesive, and the like.

[0042] It can be understood that the photovoltaic module also includes conductive glass, and the conductive glass and the battery cell can be laminated together at high temperature through the packaging film to improve the sealing effect and waterproof and dustproof effect of the photovoltaic module. Among them, the light transmittance of the conductive glass is greater than 90%. In this way, the higher the light transmittance of the conductive glass, the more sunlight can enter the photovoltaic module, which is beneficial to improve the photoelectric conversion efficiency. Among them, the conductive glass includes float glass, embossed glass, tempered glass, anti-reflection glass, PET (Polyethylene terephthalate), PEN (Polyethylene naphthalate twoformic acid glycol ester), PEI (Polyetherimide), PMMA (Polymethyl methacrylate) One or more, the specific selection is based on the actual production situation.

[0043] Furthermore, the encapsulation film includes but is not limited to ethylene vinyl acetate copolymer (EVA) and polyethylene octene co-elastomer (POE). The encapsulation film can be cured at a certain temperature to form a solid connection layer, thereby improving the connection effect between the cell and the encapsulation board. At the same time, while ensuring that light is irradiated to the photovoltaic cell, it can protect the photovoltaic cell and prevent the photovoltaic cell from being damaged due to erosion or wear, thereby extending the service life of the photovoltaic cell.

[0044] As the core power generation part of photovoltaic modules, solar cells are composed of solar slice cells connected in series and / or in parallel. The type of solar cells can be monocrystalline silicon solar cells, polycrystalline silicon solar cells, amorphous silicon heterojunction solar cells or other stacked solar cells, or thin-film solar cells (amorphous silicon, copper indium gallium selenide, gallium arsenide, cadmium telluride, perovskite, etc.) or solar cells using other technologies.

[0045] Furthermore, an embodiment of the present application also provides a photovoltaic building integrated system, comprising a plurality of the photovoltaic power generation structures 10 as described above. Since the photovoltaic building integrated system comprises the photovoltaic power generation structure 10 as described above, the ability of the photovoltaic building integrated system to resist wind pressure, snow pressure and other loads is greatly improved, thereby improving its reliability in use.

[0046] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A photovoltaic power generation structure, characterized in that: The photovoltaic power generation structure comprises: A photovoltaic module (100) comprising a cell (110) and a packaging plate (120) for packaging the cell (110); A first frame (210) is arranged along a lamination direction with the photovoltaic assembly (100), one end of the first frame (210) is connected to the photovoltaic assembly (100), and the other end of the first frame (210) is used to be connected to a building; A second frame (310) is arranged along an arrangement direction with the photovoltaic assembly (100) and is connected to a side surface of the photovoltaic assembly (100); the second frame (310) is detachably connected to the first frame (210); the arrangement direction intersects with the lamination direction; A metal plate (410), wherein along the lamination direction, the metal plate (410) is connected between the packaging plate (120) and the first frame (210).

2. The photovoltaic power generation structure according to claim 1, characterized in that: A first adhesive layer (220) is connected between the first frame (210) and the metal plate (410); and / or A second adhesive layer (320) is connected between the second frame (310) and the side surface of the photovoltaic assembly (100).

3. The photovoltaic power generation structure according to claim 1, characterized in that: The photovoltaic power generation structure further comprises a first fastener (330) for connecting the first frame (210) and the second frame (310).

4. The photovoltaic power generation structure according to claim 1, characterized in that: Along the lamination direction, the lamination surface of the photovoltaic assembly (100) is flush with the surface of the second frame (310).

5. The photovoltaic power generation structure according to claim 1, characterized in that: Along the lamination direction, the surface of the second frame (310) protrudes relative to the lamination surface of the photovoltaic component (100).

6. The photovoltaic power generation structure according to claim 1, characterized in that: A third adhesive layer (420) is connected between the metal plate (410) and the packaging plate (120).

7. The photovoltaic power generation structure according to claim 6, characterized in that: The photovoltaic power generation structure further comprises an angle code (430), wherein the angle code (430) is connected to a side surface of the first frame (210).

8. The photovoltaic power generation structure according to claim 7, characterized in that: The photovoltaic power generation structure further comprises a plurality of reinforcing members (440), wherein the plurality of reinforcing members (440) are arranged at intervals, the two ends of the reinforcing members (440) are connected to the angle brackets (430), and one side surface of the reinforcing members (440) is connected to the metal plate (410).

9. The photovoltaic power generation structure according to claim 8, characterized in that: The reinforcing member (440) and the corner bracket (430) are connected via a second fastener (450); and a fourth adhesive layer (460) is connected between the reinforcing member (440) and the metal plate (410).

10. A photovoltaic building integrated system, characterized in that: The method comprises a plurality of photovoltaic power generation structures according to any one of claims 1 to 9.

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