Photovoltaic building integrated assembly and photovoltaic system

Abstract

The utility model is applicable to the technical field of solar power generation, and provides a building integrated photovoltaic assembly and a photovoltaic system, the building integrated photovoltaic assembly comprises a photovoltaic main body, a back steel plate and a mounting component, the back steel plate is arranged on the back of the photovoltaic main body, the area of the back steel plate is larger than that of the photovoltaic main body, and the mounting component is arranged on the back steel plate. The part, exceeding the photovoltaic main body, of the back steel plate is matched with the mounting component, so that the back steel plate can be fixedly mounted at the target position, the mounting difficulty is low, the assembly does not need to be framed for mounting, and the material cost of assembly mounting is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of solar power generation, and in particular relates to a photovoltaic building integrated component and a photovoltaic system. Background Art

[0002] BIPV stands for Building Integrated PV (PV stands for Photovoltaic), which refers to photovoltaic building integration technology. It is a technology that integrates solar power generation (photovoltaic) products into buildings, that is, installing solar photovoltaic power generation arrays on the outer surface of the building's envelope structure to provide electricity, such as combining with building roofs, radio and television curtain walls, etc. to generate electricity.

[0003] The back of existing photovoltaic building integrated modules uses a composite or fluorine-coated back sheet, and the modules need to be framed before they can be installed on the roof or other fixed locations. The module production cost is high and the installation is difficult. Utility Model Content

[0004] The embodiment of the utility model provides a photovoltaic assembly, aiming to solve the problems of high production cost and great installation difficulty of the existing photovoltaic building integrated assembly.

[0005] An embodiment of the utility model is implemented as follows: a photovoltaic building integrated component includes a photovoltaic body, a back steel plate and an installation component. The back steel plate is arranged on the back of the photovoltaic body. The area of ​​the back steel plate is larger than the area of ​​the photovoltaic body. The portion of the back steel plate that exceeds the photovoltaic body cooperates with the installation component to fix the back steel plate to the target position.

[0006] Furthermore, the back steel plate is provided with an anti-rust layer.

[0007] Furthermore, the installation component includes a first installation piece, and a mounting hole is provided on the portion of the back steel plate that exceeds the photovoltaic body. The first installation piece cooperates with the mounting hole to fix the back steel plate to a target position.

[0008] Furthermore, the mounting component includes a second mounting member and a pressing block, wherein the pressing block is used to be connected to a portion of the back steel plate that extends beyond the photovoltaic body, and is fixedly mounted to a target position through the second mounting member.

[0009] Further, the photovoltaic body includes a front film layer, a front transparent film, a first encapsulation layer, a battery string and a second encapsulation layer;

[0010] The first packaging layer is arranged on the front side of the battery string, the front transparent film is arranged on the side of the first packaging layer away from the battery string, and the front film layer is arranged on the side of the front transparent film away from the first packaging layer;

[0011] The second packaging layer is arranged on the back side of the battery string, and the back steel plate is arranged on a side of the second packaging layer away from the battery string.

[0012] Furthermore, the front film layer is ETFE.

[0013] Furthermore, the front transparent membrane adopts a composite material of glass fiber and acrylic acid.

[0014] Furthermore, the first encapsulation layer and / or the second encapsulation layer is at least one of EVA and POE.

[0015] Furthermore, the photovoltaic building integrated component also includes a sealant, and the edges of the front transparent film, the first packaging layer and the battery string are sunken to form an annular groove, and the sealant is filled in the annular groove.

[0016] In a second aspect, the present application also provides a photovoltaic system, comprising the photovoltaic building integrated component as described above.

[0017] The beneficial effect of the present application lies in that the photovoltaic building integrated component of the present application includes a photovoltaic main body, a back steel plate and installation components, wherein the back steel plate is arranged on the back of the photovoltaic main body, the area of ​​the back steel plate is larger than the area of ​​the photovoltaic main body, and the portion of the back steel plate that exceeds the photovoltaic main body can be cooperated with the installation components to fix the back steel plate to the target position, the installation difficulty is low, and there is no need to frame the component for installation, thereby reducing the material cost of component installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an embodiment of a photovoltaic building integrated assembly provided by the present application;

[0019] Figure 2 It is a schematic diagram of the structural distribution of an embodiment of a photovoltaic building integrated assembly provided by the present application;

[0020] Figure 3 This is a schematic structural diagram of a Z-shaped pressing block in one embodiment of a photovoltaic building integrated assembly provided by the present application;

[0021] Figure 4 This is a schematic diagram of the structure of a Z-shaped pressing block pressing against a back steel plate in one embodiment of a photovoltaic building integrated assembly provided by the present application;

[0022] Figure 5 This is a schematic structural diagram of a U-shaped pressing block of an embodiment of a photovoltaic building integration assembly provided by the present application;

[0023] Figure 6 It is a schematic structural diagram of a U-shaped pressing block pressing against a back steel plate in one embodiment of a photovoltaic building integrated assembly provided by the present application. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. Examples of embodiments are shown in the accompanying drawings, in which the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model. In addition, it should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model.

[0025] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "left", "right", "horizontal", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0026] In addition, the terms "first" and "second" 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, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0027] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; 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. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0029] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the utility model. In addition, the utility model can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and / or settings discussed in itself. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0030] The photovoltaic building integrated component of the present application includes a photovoltaic main body, a back steel plate and installation components, wherein the back steel plate is arranged on the back of the photovoltaic main body, the area of ​​the back steel plate is larger than the area of ​​the photovoltaic main body, and the portion of the back steel plate that exceeds the photovoltaic main body can be cooperated with the installation components to fix the back steel plate to the target position, with low installation difficulty, and no need to frame the component for installation, thereby reducing the material cost of component installation.

[0031] Embodiment 1

[0032] like Figures 1 to 6 As shown, an embodiment of the present application provides a photovoltaic building integrated component, including a photovoltaic body 100, a back steel plate 200 and an installation component, the back steel plate 200 is arranged on the back of the photovoltaic body 100, the area of ​​the back steel plate 200 is larger than the area of ​​the photovoltaic body 100, and the portion of the back steel plate 200 that exceeds the photovoltaic body 100 cooperates with the installation component to fix the back steel plate 200 to the target position.

[0033] In implementation, the photovoltaic body 100 is the body of the photovoltaic building integrated assembly, which is a device for directly converting light energy into electrical energy through photoelectric effect or photochemical effect under certain illumination conditions. The photovoltaic body 100 has a front side and a back side, wherein the front side of the photovoltaic body 100 refers to the light-receiving side, and similarly, the back side of the photovoltaic body 100 refers to the backlight side.

[0034] The back steel plate 200 is a plate-shaped structure as a whole. The back steel plate 200 can be fixed on the back of the photovoltaic body 100 by lamination or other means, and the area of ​​the back steel plate 200 is larger than the area of ​​the photovoltaic body 100, so that the back steel plate 200 partially exceeds the photovoltaic body 100. Exemplarily, the photovoltaic body 100 is a square, a rectangle, a diamond or other shapes, without limitation. The back steel plate 200 can adopt a shape that matches the shape of the photovoltaic body 100. For example, when the photovoltaic body 100 is a square, the back steel plate 200 can adopt a square or a rectangle.

[0035] For example, taking the photovoltaic body 100 as a square, the side length of the photovoltaic body 100 is a, and the back steel plate 200 can be a square or a rectangle. For example, when the back steel plate 200 is a square, the side length of the back steel plate 200 is a+b. For example, when the back steel plate 200 is a rectangle, the short side of the back steel plate 200 is a, and the long side is a+b.

[0036] By designing the back steel plate 200 to partially extend beyond the photovoltaic body 100, the portion of the back steel plate 200 extending beyond the photovoltaic body 100 is used to cooperate with installation components. For example, the installation components can be screws or fasteners, and the back steel plate 200 is fixed to the target position by screws or fasteners, so that the photovoltaic building integrated component is fixedly installed as a whole at the target position. The structure is simple and reliable, and it is easy to install. There is no need to frame the photovoltaic building integrated component and then install it on the roof or other fixed positions, which reduces the components required for component installation and thereby reduces the component installation cost.

[0037] Optionally, the target location refers to the location where the photovoltaic building integrated component needs to be installed. For example, the target location can be a building roof, curtain wall or ceiling, etc., without limitation.

[0038] The photovoltaic building integrated component of the present application includes a photovoltaic main body 100, a back steel plate 200 and installation components, wherein the back steel plate 200 is arranged on the back of the photovoltaic main body 100, the area of ​​the back steel plate 200 is larger than the area of ​​the photovoltaic main body 100, and the portion of the back steel plate 200 that exceeds the photovoltaic main body 100 can be cooperated with the installation components to fix the back steel plate 200 to the target position, with low installation difficulty, and no need to frame the component for installation, thereby reducing the material cost of component installation.

[0039] In some optional embodiments, the back steel plate 200 is provided with an anti-rust layer. The anti-rust layer refers to a film layer coated or plated on the back steel plate 200 to prevent the back steel plate 200 from rusting.

[0040] Optionally, the anti-rust layer can be a zinc-plated layer, a chrome-plated layer, an aluminum-plated layer, an electroplated nickel layer or an electroplated alloy layer. For example, an aluminum oxide film is formed on the surface of the back steel plate 200 by an anodizing method, which effectively prevents the back steel plate 200 from oxidation and corrosion and extends the service life of the component.

[0041] In some optional embodiments, the mounting component includes a first mounting member 400, and a mounting hole 500 is provided at a portion of the back steel plate 200 that extends beyond the photovoltaic body 100. The first mounting member 400 cooperates with the mounting hole 500 to fix the back steel plate 200 to the target position.

[0042] The first mounting member 400 can be a screw or a bolt, and a threaded hole is provided at the target position. The mounting hole 500 can be designed as a through hole, and the screw or bolt passes through the through hole and cooperates with the threaded hole at the target position, so as to fix the back steel plate 200 to the target position.

[0043] Optionally, the mounting hole 500 can also be designed as an internal threaded hole, and a screw or bolt can be threadedly matched with the mounting hole 500, and then matched with the threaded hole at the target position, so as to fix the back steel plate 200 to the target position. The implementation method is simple and reliable, and the installation difficulty is low.

[0044] In some optional embodiments, the mounting component includes a second mounting member 600 and a pressing block 300 , wherein the pressing block 300 is used to connect to a portion of the back steel plate 200 that extends beyond the photovoltaic body 100 , and is fixedly mounted to a target position by the second mounting member 600 .

[0045] During implementation, the pressing block 300 is in a Z-shape as a whole. Figure 3 and Figure 4 As shown. The first side 310 of the pressing block 300 can be pressed against the portion of the back steel plate 200 that exceeds the photovoltaic main body 100, and the second side 320 of the pressing block 300 is provided with a mounting hole 321. The second mounting member 600 can be a screw or a bolt, and the mounting hole 321 can be designed as a through hole. The second mounting member 600 passes through the mounting hole 321 and cooperates with the threaded hole at the target position, so that the back steel plate 200 is fixedly installed at the target position.

[0046] Optionally, the mounting hole 321 can also be designed as an internal threaded hole, and the second mounting member 600 is threadedly matched with the mounting hole 321, and then matched with the threaded hole at the target position, so as to fix the back steel plate 200 to the target position. The implementation method is simple and reliable, and the installation difficulty is low.

[0047] In some possible embodiments, the pressing block 300 includes a U-shaped body 330, and both ends of the opening of the U-shaped body 330 extend outward to form a first pressing portion 340 and a second pressing portion 350, such as Figure 5 and Figure 6 As shown. The first pressing part 340 can press against the edge of the first back steel plate 200, the second pressing part 350 can be left empty or pressed against the edge of the second back steel plate 200, the U-shaped body 330 is provided with a mounting hole 331, and the second mounting member 600 can be a screw or a bolt. In implementation, the mounting hole 331 can be designed as a through hole, and the second mounting member 600 passes through the mounting hole 331 and cooperates with the threaded hole at the target position, so that the back steel plate 200 is fixedly installed at the target position.

[0048] Optionally, the mounting hole 331 can also be designed as an internal threaded hole, and the second mounting member 600 is threadedly matched with the mounting hole 331, and then matched with the threaded hole at the target position, so as to fix the back steel plate 200 to the target position. The implementation method is simple and reliable, and the installation difficulty is low.

[0049] It should be noted that the structure of the above-mentioned pressing block 300 is an example of the embodiment of the present application, rather than a specific limitation of the present application. In some other embodiments, the pressing block 300 may also adopt other shapes and structures without limitation.

[0050] In some optional embodiments, the photovoltaic body 100 includes a front film layer 110, a front transparent film 120, a first encapsulation layer 130, a battery string 140, and a second encapsulation layer 150;

[0051] The first encapsulation layer 130 is disposed on the front side of the battery string 140 , the front transparent film 120 is disposed on a side of the first encapsulation layer 130 away from the battery string 140 , and the front film layer 110 is disposed on a side of the front transparent film 120 away from the first encapsulation layer 130 ;

[0052] The second encapsulation layer 150 is disposed on the back side of the battery string 140 , and the back steel plate 200 is disposed on a side of the second encapsulation layer 150 away from the battery string 140 .

[0053] During implementation, the battery string 140 can adopt any one of an IBC (Interdigitated back contact) battery string, a PERC (Passivated Emitter and Rear Cell) battery string, a TOPCon (Tunnel Oxide Passivating Contact) battery string and a BC (Back Contact) battery string, without limitation.

[0054] Taking the front side of the battery string 140 facing upward as an example, the front film layer 110, the front transparent film 120, the first encapsulation layer 130, the battery string 140 and the second encapsulation layer 150 are arranged in order from top to bottom. Among them, the front film layer 110 is ETFE. ETFE (ethylene-tetra-fluoro-ethylene) is a tough fluoroplastic. While maintaining the good heat resistance, chemical resistance and electrical insulation properties of PTFE (Polytetrafluoroethylene), ETFE has greatly improved radiation resistance and mechanical properties, and its tensile strength can reach 50MPa, which is nearly twice that of polytetrafluoroethylene.

[0055] Optionally, the front transparent film 120 is made of a glass fiber and acrylic composite material, which can effectively improve the rigidity, impact strength, creep resistance and dimensional stability of the product.

[0056] Optionally, the first encapsulation layer 130 and / or the second encapsulation layer 150 is at least one of EVA and POE, wherein EVA (ethylene-vinyl acetate copolymer) is a general-purpose polymer with excellent water resistance, corrosion resistance, vibration resistance, heat preservation, aging resistance and chemical stability. POE (polyolefinthermoplastic elastomer) is a high-performance polyolefin, which is rubber elastic at room temperature and has the characteristics of low density, large bending, high low-temperature impact resistance, easy processing and reusability.

[0057] Optionally, the photovoltaic building integrated assembly provided in the present application further includes a sealant 700, and the edges of the front transparent film 120, the first encapsulation layer 130 and the battery string 140 are sunken to form an annular groove, and the sealant 700 is filled in the annular groove.

[0058] During implementation, the sealant 700 may be butyl rubber, which is a type of synthetic rubber synthesized from isobutylene and a small amount of isoprene and has good chemical stability, thermal stability, air tightness and water tightness.

[0059] It should be noted that the use of butyl rubber in the above-mentioned sealant 700 is an example of an embodiment of the present application, and is not a specific limitation of the present application. In some other embodiments, the sealant 700 can also be made of rubber, styrene-butadiene rubber or other materials with water-blocking and sealing properties without limitation.

[0060] Embodiment 2

[0061] In some optional embodiments, the present application also provides a photovoltaic system, including the photovoltaic building integrated component as described above.

[0062] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the structure and implementation principle of the photovoltaic system described above can refer to the corresponding structure and implementation principle in the aforementioned embodiment 1, and will not be repeated here.

[0063] The photovoltaic building integrated component of the present application includes a photovoltaic main body 100, a back steel plate 200 and installation components, wherein the back steel plate 200 is arranged on the back of the photovoltaic main body 100, the area of ​​the back steel plate 200 is larger than the area of ​​the photovoltaic main body 100, and the portion of the back steel plate 200 that exceeds the photovoltaic main body 100 can be cooperated with the installation components to fix the back steel plate 200 to the target position, with low installation difficulty, and no need to frame the component for installation, thereby reducing the material cost of component installation.

[0064] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A photovoltaic building integrated assembly, characterized in that: It includes a photovoltaic body, a back steel plate and an installation component. The back steel plate is arranged on the back of the photovoltaic body. The area of ​​the back steel plate is larger than the area of ​​the photovoltaic body. The part of the back steel plate that exceeds the photovoltaic body cooperates with the installation component to fix the back steel plate to the target position.

2. The photovoltaic building integrated assembly according to claim 1, characterized in that: The back steel plate is provided with an anti-rust layer.

3. The photovoltaic building integrated assembly according to claim 1, characterized in that: The installation component includes a first installation piece, and a mounting hole is provided on the portion of the back steel plate that exceeds the photovoltaic body. The first installation piece cooperates with the mounting hole to fix the back steel plate to the target position.

4. The photovoltaic building integrated assembly according to claim 1, characterized in that: The mounting component includes a second mounting member and a pressing block. The pressing block is used to be connected to a portion of the back steel plate that extends beyond the photovoltaic body and is fixedly mounted to the target position through the second mounting member.

5. The photovoltaic building integrated assembly according to claim 1, characterized in that: The photovoltaic body comprises a front film layer, a front transparent film, a first packaging layer, a battery string and a second packaging layer; The first encapsulation layer is arranged on the front side of the battery string, the front transparent film is arranged on a side of the first encapsulation layer away from the battery string, and the front film layer is arranged on a side of the front transparent film away from the first encapsulation layer; The second encapsulation layer is arranged on the back side of the battery string, and the back steel plate is arranged on a side of the second encapsulation layer away from the battery string.

6. The photovoltaic building integrated assembly according to claim 5, characterized in that: The front film layer is ETFE.

7. The photovoltaic building integrated assembly according to claim 5, characterized in that: The front transparent film is made of glass fiber and acrylic composite material.

8. The photovoltaic building integrated assembly according to claim 5, characterized in that: The first encapsulation layer and / or the second encapsulation layer is at least one of EVA and POE.

9. The photovoltaic building integrated assembly according to any one of claims 5 to 8, characterized in that: The photovoltaic building integrated assembly also includes a sealant. The edges of the front transparent film, the first packaging layer and the battery string are sunken to form an annular groove, and the sealant is filled in the annular groove.

10. A photovoltaic system, characterized in that: It comprises the photovoltaic building integrated assembly as claimed in claim 9.

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