Photovoltaic building integrated assembly and photovoltaic system

Abstract

The utility model is suitable for 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 steel plate and a middle layer, the middle layer comprises an insulating layer and a first adhesive film layer, and the upper side of the insulating layer is attached to the back face of the photovoltaic main body; the lower side of the insulating layer is attached to the upper side of the first adhesive film layer, and the lower side of the first adhesive film layer is attached to the steel plate; and a preset mounting area is arranged on the steel plate. The building integrated photovoltaic assembly is installed through the preset installation area arranged on the steel plate, the installation difficulty is low, the assembly does not need to be framed for installation, and the material cost of assembly installation is reduced.

Description

Technical Field

[0001] The present application relates to the field of solar power generation technology, and in particular 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] In the related art, a composite or fluorine-coated back sheet is used on the back of photovoltaic building integrated modules. The modules can be installed on the roof or other fixed locations only by framing them or fixing them with profiles, which results in high module production costs and great installation difficulty. Utility Model Content

[0004] The present application proposes a photovoltaic building integrated component and a photovoltaic system, which are used to solve the problems of high production cost and great installation difficulty of photovoltaic building integrated components.

[0005] In order to achieve the above purpose, this application adopts the following technical solutions:

[0006] In a first aspect, a photovoltaic building integrated component is provided, comprising a photovoltaic body, a steel plate and an intermediate layer, wherein the intermediate layer comprises an insulating layer and a first adhesive film layer, wherein the upper side of the insulating layer is attached to the back side of the photovoltaic body, the lower side of the insulating layer is attached to the upper side of the first adhesive film layer, and the lower side of the first adhesive film layer is attached to the steel plate. A preset installation area is provided on the steel plate.

[0007] Furthermore, the insulating layer is made of PET material.

[0008] Furthermore, the steel plate is provided with an anti-rust layer.

[0009] Furthermore, the steel plate includes a target area not covered by the photovoltaic body, and the preset installation area is set in the target area.

[0010] Furthermore, the photovoltaic body includes a front film layer, a front transparent film, a second adhesive film layer, a battery string and a third adhesive film layer; the second adhesive film layer is adhered to the upper side of the battery string, the third adhesive film layer is adhered to the lower side of the battery string, the second adhesive film layer is adhered to the lower side of the front transparent film, and the lower side of the front film layer is adhered to the front transparent film; the upper side of the intermediate layer is adhered to the lower side of the third adhesive film layer.

[0011] Furthermore, the front film layer is made of ETFE material.

[0012] Furthermore, the front transparent membrane adopts a composite material of glass fiber and acrylic acid.

[0013] Furthermore, the first adhesive film layer, the second adhesive film layer and the third adhesive film layer are at least one of EVA and POE.

[0014] Furthermore, the photovoltaic building integrated component also includes a sealant, which surrounds the front transparent film, the second film layer, the battery string, the third film layer and the outer side of the middle layer, and the sealant bonds the front film layer and the steel plate.

[0015] In a second aspect, the present application also provides a photovoltaic system, comprising the photovoltaic building integrated component as described above.

[0016] The photovoltaic building integration component proposed in the present application includes a photovoltaic main body, a steel plate and an intermediate layer. Among them, the intermediate layer includes an insulating layer and a first adhesive film layer, the upper side of the insulating layer is attached to the back of the photovoltaic main body, the lower side of the insulating layer is attached to the upper side of the first adhesive film layer, and the lower side of the first adhesive film layer is attached to the steel plate; a preset installation area is provided on the steel plate, and the preset installation area is a pressing block area or a mounting hole. In this way, the photovoltaic main body and the steel plate are combined into a photovoltaic building integration component through the intermediate layer, which improves the pressure resistance and insulation performance of the component, and because the preset installation area is provided on the steel plate, when installing the photovoltaic building integration component, there is no need to install an additional frame or other profiles to fix the component, which reduces the difficulty and cost of installing the component. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structural distribution of a photovoltaic building integrated component provided in an embodiment of the present application Figure 1 ;

[0018] Figure 2 A schematic diagram of a steel plate provided in an embodiment of the present application;

[0019] Figure 3 A schematic structural diagram of a photovoltaic building integrated assembly provided in an embodiment of the present application;

[0020] Figure 4 A schematic diagram of the structural distribution of a photovoltaic building integrated component provided in an embodiment of the present application Figure 2 .

[0021] Reference numerals:

[0022] Photovoltaic body 100, middle layer 200, steel plate 300, front film layer 110, front transparent film 120, second adhesive film layer 130, battery string 140, third adhesive film layer 150, insulating layer 210, first adhesive film layer 220, photovoltaic body covering area 310, target area 320, mounting hole 321, and pressing block area 322. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application 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 present application, and should not be construed as limiting the present application. In addition, it should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0024] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "left", "right", "horizontal", "top", "bottom", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0025] 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 this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0026] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 this application can be understood according to specific circumstances.

[0027] In the present application, 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.

[0028] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the various specific processes and material examples provided by the present application, but those of ordinary skill in the art can appreciate the application of other processes and / or the use of other materials.

[0029] The photovoltaic building integration component proposed in the present application includes a photovoltaic main body, a steel plate and an intermediate layer. Among them, the intermediate layer includes an insulating layer and a first adhesive film layer, the upper side of the insulating layer is attached to the back of the photovoltaic main body, the lower side of the insulating layer is attached to the upper side of the first adhesive film layer, and the lower side of the first adhesive film layer is attached to the steel plate; a preset installation area is provided on the steel plate, and the preset installation area is a pressing block area or a mounting hole. In this way, the photovoltaic main body and the steel plate are combined into a photovoltaic building integration component through the intermediate layer. Since the preset installation area is provided on the steel plate, when installing the photovoltaic building integration component, there is no need to install an additional frame or other profiles to fix the component, which reduces the difficulty and cost of installing the component.

[0030] In some embodiments, Figure 1 A schematic diagram of the structure of a photovoltaic building integration component is shown, wherein the photovoltaic building integration component includes a photovoltaic body 100, an intermediate layer 200 and a steel plate 300, wherein the intermediate layer 200 includes an insulating layer 210 and a first adhesive film layer 220. The intermediate layer 200 is arranged on the back of the photovoltaic body 100, the steel plate is arranged on the lower side of the intermediate layer 200, the insulating layer 210 is attached to the photovoltaic body 100, and the first adhesive film layer 220 is attached to the steel plate 300. By setting the preset installation area on the steel plate, the photovoltaic building integration component can be installed and fixed.

[0031] 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.

[0032] The middle layer 200 is used to combine the photovoltaic body 100 and the steel plate 300 into a photovoltaic building integrated component. The insulating layer 210 and the first adhesive film layer 220 are used to improve the pressure resistance and insulation performance of the photovoltaic building integrated component to prevent the photovoltaic body 100 and the steel plate 300 from being connected and short-circuited.

[0033] For example, the insulating layer 210 is made of PET material, which is the main type of thermoplastic polyester. It has excellent physical and mechanical properties in a wide temperature range, and its use temperature can reach 120°C. It has excellent electrical insulation. At high temperature and high frequency, its electrical properties are still good, and its creep resistance, fatigue resistance, friction resistance, and dimensional stability are good.

[0034] Optionally, the first adhesive film layer 220 is made of 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.

[0035] The steel plate 300 is a plate-shaped structure as a whole, and the steel plate 300 can be fixed on the lower side of the intermediate layer 200 by lamination or the like. When the photovoltaic body 100 completely covers the steel plate 300, the preset installation area can be located on the side of the steel plate 300; when the photovoltaic body 100 fails to completely cover the steel plate 300, the preset installation area can be located in an area not covered by the photovoltaic body 100.

[0036] For example, taking the case where the preset installation area is located in an area not covered by the photovoltaic body 100, an installation hole or a pressing block area can be reserved in the area, so that in the subsequent installation process, the photovoltaic building integrated components can be installed and fixed through the installation holes based on screws or bolts, or the photovoltaic building integrated components can be installed and fixed through the pressing block area based on the pressing blocks.

[0037] Optionally, the bottom surface of the photovoltaic body 100 may be a square, a rectangle, a diamond or other shape, and the steel plate 300 may be a shape that matches the shape of the photovoltaic body 100, which is not limited in this application. For example, when the bottom surface of the photovoltaic body 100 is a square, the steel plate 300 may be a square or a rectangle.

[0038] The photovoltaic building integrated component provided in the present application includes a photovoltaic main body 100, an intermediate layer 200 and a steel plate 300. The photovoltaic main body 100 and the steel plate 300 are combined into a photovoltaic building integrated component through the intermediate layer 200. Based on the preset installation position set on the steel plate 300, the photovoltaic building integrated component can be installed and fixed on the roof, curtain wall or ceiling of the building. The installation difficulty is low, and the component does not need to be framed before installation, which reduces the material cost of component installation and reduces costs.

[0039] In some optional embodiments, the steel plate 300 is provided with an anti-rust layer. The anti-rust layer refers to a film layer coated or plated on the steel plate 300 to prevent the steel plate 300 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 (such as an aluminum-zinc-plated layer). For example, an anodizing method is used to form an aluminum oxide film on the surface of the steel plate 300 to effectively prevent oxidation and corrosion of the steel plate 300 and extend the service life of the component.

[0041] In some optional embodiments, such as Figure 2 As shown, the steel plate 300 includes a photovoltaic body 100 covering area 310 and a target area 320 not covered by the photovoltaic body. By setting the preset installation area at the target area 320, the photovoltaic building integrated assembly can be directly installed through the preset installation area. For example, the installation hole 321 is located in the target area 320, or the pressing block area 322 is located in the target area 320.

[0042] In some optional embodiments, the photovoltaic body 100 includes a front film layer 110 , a front transparent film 120 , a second adhesive film layer 130 , a battery string 140 , and a third adhesive film layer 150 .

[0043] The upper side of the battery string 140 is attached to the second adhesive film layer 130 , the lower side of the battery string 140 is attached to the third adhesive film layer 150 , the lower side of the front transparent film 120 is attached to the second adhesive film layer 130 , and the lower side of the front film layer 110 is attached to the front transparent film 120 ;

[0044] The upper side of the intermediate layer 200 is attached to the lower side of the third adhesive film layer 150 .

[0045] 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, and the present application does not make any specific limitation on this.

[0046] 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 second adhesive film layer 130, the battery string 140 and the third adhesive film layer 150 are arranged in order from top to bottom. Among them, the front film layer 110 is made of ETFE material. 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 the tensile strength can reach 50MPa, which is nearly twice that of polytetrafluoroethylene.

[0047] 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.

[0048] Optionally, the second adhesive film layer 130 and the third adhesive film layer 150 are made of at least one of EVA and POE.

[0049] For example, in combination with the photovoltaic building integrated assembly provided in the above embodiments, the structure of the photovoltaic building integrated assembly provided in this application is as follows: Figure 3 As shown, the materials of each layer from top to bottom are ETFE, acrylic composite material + glass fiber, EVA / POE, battery string, EVA / POE, PET, EVA / POE, and galvanized steel plate.

[0050] Alternatively, if Figure 4 As shown, the photovoltaic building integrated component provided by the present application also includes a sealant 400, which surrounds the front transparent film 120, the second film layer 130, the battery string 140, the third film layer 150 and the outer side of the intermediate layer 200, and the sealant 400 bonds the front film layer 110 and the steel plate 300.

[0051] In practice, the sealant 400 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.

[0052] It should be noted that the use of butyl rubber in the above-mentioned sealant 400 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 400 may also be made of rubber, styrene-butadiene rubber or other materials with water-blocking and sealing properties without limitation.

[0053] In some optional embodiments, the present application also provides a photovoltaic system, including the photovoltaic building integrated component as described above.

[0054] 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 of the aforementioned embodiment 1, and will not be repeated here.

[0055] The photovoltaic building integrated component of the present application includes a photovoltaic main body 100, an intermediate layer 200 and a steel plate 300, wherein the intermediate layer 200 includes an insulating layer 210 and a first adhesive film layer 220. The intermediate layer 200 is arranged on the back of the photovoltaic main body 100, the steel plate is arranged on the lower side of the intermediate layer 200, the insulating layer 210 is attached to the photovoltaic main body 100, and the first adhesive film layer 220 is attached to the steel plate 300. By setting the preset installation area on the steel plate, the photovoltaic building integrated component can be installed and fixed, the installation difficulty is low, and the component does not need to be framed for installation, thereby reducing the material cost of component installation.

[0056] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A photovoltaic building integrated assembly, characterized in that: It comprises a photovoltaic body, a steel plate and an intermediate layer, wherein the intermediate layer comprises an insulating layer and a first adhesive film layer, the upper side of the insulating layer is attached to the back side of the photovoltaic body, the lower side of the insulating layer is attached to the upper side of the first adhesive film layer, and the lower side of the first adhesive film layer is attached to the steel plate; A preset installation area is arranged on the steel plate.

2. The photovoltaic building integrated assembly according to claim 1, characterized in that: The insulating layer is made of PET material.

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

4. The photovoltaic building integrated assembly according to claim 1, characterized in that: The steel plate includes a target area not covered by the photovoltaic body, and the preset installation area is set in the target area.

5. The photovoltaic building integrated assembly according to any one of claims 1 to 4, characterized in that: The photovoltaic body comprises a front film layer, a front transparent film, a second adhesive film layer, a battery string and a third adhesive film layer; The upper side of the battery string is attached to the second adhesive film layer, the lower side of the battery string is attached to the third adhesive film layer, the lower side of the front transparent film is attached to the second adhesive film layer, and the lower side of the front film layer is attached to the front transparent film; The upper side of the middle layer is attached to the lower side of the third adhesive film layer.

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

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 adhesive film layer, the second adhesive film layer and the third adhesive film layer are at least one of EVA and POE.

9. The photovoltaic building integrated assembly according to claim 5, characterized in that: The photovoltaic building integrated component also includes a sealant, which surrounds the front transparent film, the second adhesive film layer, the battery string, the third adhesive film layer and the outer side of the intermediate layer, and the sealant bonds the front film layer and the steel plate.

10. A photovoltaic system, characterized in that: The invention comprises a photovoltaic building integrated assembly as claimed in any one of claims 1 to 9.

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