A solar photovoltaic module

Abstract

The present invention discloses a solar photovoltaic assembly, which includes a photovoltaic power generation module and a supporting back plate stacked in sequence, and the supporting back plate is provided with a sound-absorbing and heat-insulating layer. The present invention adopting the above-mentioned structural arrangement can achieve better sound insulation and heat insulation functions by providing a sound-absorbing and heat-insulating layer, and has fireproof and heat-insulating functions, thereby avoiding the risk of self-explosion of conventional photovoltaic curtain wall glass. In addition, by providing the sound-absorbing and heat-insulating layer in the supporting back plate, the phenomenon and degree of thermal expansion and contraction of the supporting back plate can be overcome to a certain extent, thereby extending the service life.

Description

Technical Field

[0001] The invention relates to a solar energy device, in particular to a solar energy photovoltaic component. Background Art

[0002] Under the existing technology, BIPV (Building Integrated Photovoltaic) technology has been increasingly innovated. Some curtain walls and roofs use photovoltaic technology and luminous technology, that is, curtain walls and roofs installed on the surface of buildings can be used for luminescence and power generation. For such curtain walls, there is a solar power generation layer on them, which can absorb light to generate electricity. However, some existing photovoltaic curtain walls and roofs do not have ideal strength, fire prevention, sound insulation, and heat preservation functions. More configurations or electrical equipment are needed to compensate, which increases the energy consumption of buildings. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a solar photovoltaic module with sound-absorbing and heat-insulating functions.

[0004] The solar photovoltaic assembly according to the embodiment of the present invention comprises a photovoltaic power generation module and a supporting back plate stacked in sequence, wherein the supporting back plate is provided with a sound-absorbing and heat-insulating layer.

[0005] According to the embodiments of the present invention, there are at least the following technical effects:

[0006] The present invention adopting the above-mentioned structure can achieve better sound insulation and heat insulation functions by setting a sound-absorbing and heat-insulating layer, and has fireproof and heat-insulating functions, thereby avoiding the risk of self-explosion of conventional photovoltaic curtain wall glass. In addition, by setting the sound-absorbing and heat-insulating layer in the supporting backboard, the thermal expansion and contraction phenomenon and degree of the supporting backboard can be overcome to a certain extent, thereby extending the service life.

[0007] According to some embodiments of the present invention, the photovoltaic power generation module and the supporting backplane are connected by one or more of the following methods:

[0008] I. The photovoltaic power generation module and the supporting back plate are fixed by bonding;

[0009] II. The photovoltaic power generation module and the side of the supporting back plate are fixedly connected to a connecting plate at the same time.

[0010] According to some embodiments of the present invention, it also includes an intermediate connection layer, and the intermediate connection layer is arranged between the photovoltaic power generation module and the supporting backplane.

[0011] According to some embodiments of the present invention, the intermediate connection layer is in one of the following forms:

[0012] A. The intermediate connecting layer is an isolation layer, and the isolation layer is provided with at least one of a buffer structure, a sound insulation structure, and a heat insulation structure;

[0013] B. The intermediate connecting layer is an adhesive layer;

[0014] C. The intermediate connection layer is provided with at least two spacer frames and structural adhesive. The spacer frames are supported between the photovoltaic power generation module and the supporting back plate and are fixed by bonding with the structural adhesive, thereby forming a hollow layer between the photovoltaic power generation module and the supporting back plate.

[0015] According to some embodiments of the present invention, when form A is adopted, frames are provided on both sides of the photovoltaic power generation module and the isolation layer, and the frames are fixedly connected to the supporting back plate.

[0016] According to some embodiments of the present invention, adhesive is provided between the frame, the photovoltaic power generation module and the isolation layer.

[0017] According to some embodiments of the present invention, spacer bars are arranged on both sides of the isolation layer, the spacer bars are attached to the frame and adhesive is arranged between the photovoltaic power generation module and the frame, or adhesive is arranged between the photovoltaic power generation module and the frame and between the spacer bars and the frame.

[0018] According to some embodiments of the present invention, the outer side of the frame is covered with a cover plate, the cover plate is fixedly connected to the supporting back plate, and one end of the cover plate extends to the surface of the photovoltaic power generation module.

[0019] According to some embodiments of the present invention, when form B is adopted, the adhesive layer is provided with a first adhesive layer, a first insulating layer and a second adhesive layer in sequence along a direction away from the photovoltaic power generation module.

[0020] According to some embodiments of the present invention, when form C is adopted, the spacer frame is made of a metal material, and a molecular sieve is arranged inside the spacer frame.

[0021] According to some embodiments of the present invention, the supporting back plate is provided with a front plate and a rear plate corresponding to the end surfaces of the sound-absorbing and heat-insulating layer close to and far from the photovoltaic power generation module.

[0022] According to some embodiments of the present invention, the sound-absorbing and heat-insulating layer includes a layer body, and a cavity exists inside the layer body.

[0023] According to some embodiments of the present invention, the sound-absorbing and heat-insulating layer is in one of the following forms:

[0024] a. The cavity has at least one of a honeycomb structure, a triangular structure, a mesh structure, a multi-layer stacked structure, and a polygonal structure;

[0025] b. The interior of the cavity is a hollow structure;

[0026] c. The layer body is a hollow structure, and a reinforcing column is arranged inside the layer body, and both ends of the reinforcing column are respectively connected to the inner side wall of the layer body.

[0027] According to some embodiments of the present invention, the cavity is set to a vacuum state;

[0028] Alternatively, the cavity is filled with heat insulating material.

[0029] According to some embodiments of the present invention, the layer body is made of one or more of galvanized aluminum plate, aluminum plate, steel plate, aluminum-magnesium-manganese plate, PC plate, FRP, epoxy resin, carbon fiber, polycarbonate, and ceramic fiber board.

[0030] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0032] Figure 1 It is a first structural schematic diagram of the present invention;

[0033] Figure 2 It is a second structural schematic diagram of the present invention;

[0034] Figure 3 It is a third structural schematic diagram of the present invention;

[0035] Figure 4 It is a fourth structural schematic diagram of the present invention;

[0036] Figure 5 It is a fifth structural schematic diagram of the present invention;

[0037] Figure 6 It is a sixth structural schematic diagram of the present invention;

[0038] Figure 7 It is a seventh structural schematic diagram of the present invention;

[0039] Figure 8 It is an eighth structural schematic diagram of the present invention;

[0040] Fig. 9 It is a ninth structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0041] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having 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 invention, and cannot be understood as limiting the present invention.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 cannot be understood as a limitation on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0043] In the description of the present invention, 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 or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] Reference Figures 1 to 9 The present invention is a solar photovoltaic assembly, which includes a photovoltaic power generation module 200 and a supporting back plate 100 stacked in sequence, and the supporting back plate 100 is provided with a sound-absorbing and heat-insulating layer 102.

[0045] The present invention adopting the above-mentioned structure can achieve better sound insulation and heat insulation functions by setting the sound-absorbing and heat-insulating layer 102, and has fireproof and heat-insulating functions, thereby avoiding the risk of self-explosion of conventional photovoltaic curtain wall glass. In addition, by setting the sound-absorbing and heat-insulating layer 102 in the supporting back plate 100, the thermal expansion and contraction phenomenon and degree of the supporting back plate 100 can be overcome to a certain extent, thereby extending the service life.

[0046] The photovoltaic power generation module 200 refers to a product that converts light energy into electrical energy. The products include but are not limited to photovoltaic products of at least one or more technical routes of crystalline silicon, amorphous silicon thin film, cadmium telluride thin film, copper indium gallium selenide thin film, perovskite thin film, dye-sensitized thin film, and gallium arsenide thin film. Its shape, structure, configuration, and function can be arbitrarily designed. The shape may be a conventional rectangle, hexagon, etc., the structure may be a single-glass structure, double-glass structure, triple-glass structure, double-glass hollow structure, triple-glass hollow structure, etc., and the configuration may be an LED photovoltaic module, a color photovoltaic module, etc.

[0047] In some embodiments, the photovoltaic power generation module and the supporting backsheet are connected by one or more of the following methods:

[0048] I. The photovoltaic power generation module and the supporting backplane are fixed by bonding; this connection method is convenient and the product has strong integrity;

[0049] II. The photovoltaic power generation module and the side of the supporting back plate are fixedly connected to a connecting plate at the same time. This connection method has high connection strength. The above two connection methods can be used together. In addition, the connection method of the photovoltaic power generation module and the supporting back plate can also refer to the subsequent connection method.

[0050] According to some embodiments of the present invention, it also includes an intermediate connection layer, which is arranged between the photovoltaic power generation module and the supporting backplane.

[0051] In some embodiments, the intermediate connecting layer 300 is an isolation layer, and the isolation layer is provided with at least one of a buffer structure, a sound insulation structure, and a heat insulation structure. The buffer structure is made of a buffer material, mainly including one or more of polystyrene foam, polyethylene foam, polyurethane foam, polyvinyl chloride foam, polypropylene foam, corrugated cardboard, air cushion film, and bulk material categories. The sound insulation structure is made of a sound insulation material, mainly including one or more of polyester fiber-type glass fiber, rock wool, sponge, and other sound-absorbing cotton and damping sound insulation felt and polyester fiber-type sound-absorbing panels. The heat insulation structure is made of a heat insulation material, mainly including one or more of aluminum silicate, rock wool, glass fiber and other fireproof and heat-insulating materials. The specific shapes of the buffer structure, the sound insulation structure, and the heat insulation structure can be flexibly set according to needs, and will not be described in detail here, and other functional structures can be added to the isolation layer in actual applications.

[0052] The present invention adopting the above-mentioned structural arrangement further arranges an isolation layer with the same or different functions on the basis of arranging the sound-absorbing and heat-insulating layer 102, which can further improve the function of the solar photovoltaic module.

[0053] Reference Figure 1 and Figure 2In some embodiments, the solar photovoltaic assembly includes a photovoltaic power generation module 200, an isolation layer and a supporting back plate 100 which are stacked in sequence, and the three can be combined and fixed in a component-type structure.

[0054] Reference Figure 2 In some embodiments, the solar photovoltaic assembly includes a photovoltaic power generation module 200, an isolation layer and a supporting back plate 100 stacked in sequence, wherein the supporting back plate 100 is formed with frames 202 extending to the photovoltaic power generation module 200 and the isolation layer on both sides, and the three can be combined and fixed in a component-type structure, and adhesive 201 is provided between the frame 202 and the photovoltaic power generation module 200, and between the frame 202 and the isolation layer. In the actual setting process, the adhesive 201 includes but is not limited to one or more of the following forms:

[0055] (1) Thermoplastic polyvinyl acetate, polyvinyl alcohol, polyvinyl acetal, polyvinyl acid, polyamide, polyethylene, cellulose, saturated polyester, polyurethane, polyvinyl chloride, etc.;

[0056] (2) Thermosetting urea-formaldehyde resins, melamine resins, phenolic resins, resorcinol formaldehyde resins, epoxy resins, unsaturated polyesters, polyisocyanates, polyimides, and polybenzimidazoles;

[0057] (3) Rubber type: chloroprene rubber, nitrile rubber, styrene-butadiene rubber, butyl rubber, polysulfide rubber, carboxyl rubber, silicone rubber, and thermoplastic rubber;

[0058] (4) Composite types: phenolic, polyvinyl acetal, phenolic-chloroprene rubber, phenolic-nitrile rubber, epoxy-nitrile rubber, epoxy-polyamide, epoxy-phenolic, and epoxy-polyurethane.

[0059] The solar photovoltaic assembly in this embodiment can effectively cover the photovoltaic power generation module 200 and both sides of the isolation layer by providing the adhesive 201, thereby improving the integrity and strength of the product.

[0060] In some embodiments, the intermediate connection layer 300 is an adhesive layer, and an insulating layer is provided at one end of the support back plate 100 close to the adhesive layer, and the three can be fixed in an integrated structure. The adhesive layer includes but is not limited to at least one of EVA (ethylene-vinyl acetate copolymer), PVB (polyvinyl butyral resin), and SGP (polyvinyl methacrylate), or can also be other hot-melt material adhesive films that meet the adhesive properties, glue involved in the glass wet clamping process, etc. The insulating layer includes but is not limited to a coating of epoxy resin insulating materials, and its setting forms include spraying, compounding, bonding, etc.

[0061] In some embodiments, the intermediate connection layer 300 is an adhesive layer, and the adhesive layer is sequentially provided with a first adhesive layer, a first insulating layer, and a second adhesive layer in a direction away from the photovoltaic power generation module 200, and the second adhesive layer is connected to the supporting back plate 100. The photovoltaic power generation module 200, the intermediate connection layer 300, and the supporting back plate 100 can be combined and fixed in an integrated structure. The first adhesive layer and the second adhesive layer can adopt the relevant settings in the previous embodiment, and the first insulating layer includes but is not limited to PET, polyester film, epoxy resin, PPO, TPE, FEP, PPS, PSU polysulfone, polyimide film, polytetrafluoroethylene, PVF, PET, TPT, TPE, BBF and other materials. One or more.

[0062] Reference Figure 3 In some embodiments, the intermediate connection layer 300 is provided with at least two spacer frames 401 and structural adhesive 402. The spacer frame 401 is supported between the photovoltaic power generation module 200 and the supporting back plate 100 and is bonded and fixed by the structural adhesive 402, thereby forming a hollow layer 400 between the photovoltaic power generation module 200 and the supporting back plate 100. One or more of vacuum, inert gas, and normal air pressure can be set in the hollow layer 400, and other materials can also be filled. The spacer frame 401 can be an aluminum spacer frame, a copper spacer frame, etc. made of metal material, or a spacer frame made of a polymer material, and a molecular sieve is arranged therein. The structural adhesive 402 can adopt the setting of the adhesive 201 in the aforementioned embodiment.

[0063] The solar photovoltaic assembly in this embodiment can reduce the weight of the product, lower the requirements on the bearing specifications of the steel frame, and reduce the cost of product turnover and transportation by providing the hollow layer 400.

[0064] In some embodiments, the intermediate connection layer 300 is an isolation layer, and frames 202 are provided on both sides of the photovoltaic power generation module 200 and the isolation layer, and the frames 202 are fixedly connected to the support back plate 100. Figure 4 and Figure 7 The frame 202 can be integrally formed on the support back plate 100, or can be separately provided and fixed to the support back plate 100 by screws or screws. By providing the frame 202 to form an embedded structure, the strength and integrity of the product can be effectively improved.

[0065] In some embodiments, based on the previous embodiment, an adhesive 201 is disposed between the frame 202 and the photovoltaic power generation module 200 and the isolation layer. The adhesive 201 may be disposed with reference to the previous embodiment.

[0066] In some embodiments, the intermediate connection layer 300 is an isolation layer, and frames 202 are provided on both sides of the photovoltaic power generation module 200 and the isolation layer, and the frames 202 are fixedly connected to the supporting back plate 100. Spacers 301 are provided on both sides of the isolation layer, and the spacers 301 are attached to the frames 202, and adhesive 201 is provided between the photovoltaic power generation module 200 and the frames 202. The spacers 301 include but are not limited to metal materials such as aluminum plates, steel plates, iron plates, copper plates, or one or more synthetic materials such as epoxy resins, rubber, PC, composite materials, and other polymer materials. The adhesive 201 can be set using the description of the aforementioned embodiment.

[0067] Reference Figure 4 In some embodiments, the intermediate connection layer 300 is an isolation layer, and frames 202 are provided on both sides of the photovoltaic power generation module 200 and the isolation layer, and the frames 202 are fixedly connected to the supporting back plate 100. Spacers 301 are provided on both sides of the isolation layer, and adhesive 201 is provided between the photovoltaic power generation module 200 and the frame 202, and between the spacers 301 and the frame 202.

[0068] Reference Figure 4 In some embodiments, the supporting back plate 100 is provided with a front plate 101 and a rear plate 103 corresponding to the end faces of the sound-absorbing and heat-insulating layer 102 close to and far from the photovoltaic power generation module 200, and the frame 202 and the rear plate 103 are integrally formed. The frame 202, the front plate 101 and the rear plate 103 can be made of metal materials or polymer materials.

[0069] In some embodiments, the middle connecting layer 300 is an isolation layer, and a frame 202 is provided on both sides of the photovoltaic power generation module 200 and the isolation layer. The frame 202 is connected to the supporting back plate 100 by screws, and an installation structure is provided on the frame 202, thereby forming a lap structure that can realize the installation and fixation of the solar photovoltaic component.

[0070] Reference Fig. 9 Alternatively, an overlap portion 600 may be independently provided on the outer side of the frame 202 to achieve connection and fixation with other mounting substrates or structures.

[0071] Of course, installation holes can also be set on both sides of the supporting back plate 100, and connected to the supporting keel (i.e. the aforementioned installation base) used to install the solar photovoltaic components by screws, bolts, riveting, welding, etc., or directly fixed in the application scenario by glue or slot structures.

[0072] Reference Figures 5 to 8In some embodiments, the intermediate connection layer 300 is an isolation layer, and frames 202 are provided on both sides of the photovoltaic power generation module 200 and the isolation layer. The outer side of the frame 202 is covered with a cover plate 500, which is fixedly connected to the support back plate 100, and one end of the cover plate 500 extends to the surface of the photovoltaic power generation module 200. The cover plate 500 can be flexibly designed in an L-shaped, Z-shaped or other structural design according to the actual product structure.

[0073] In the above embodiment, the frame 202 and the cover plate 500 forming the overlap structure may be made of metal materials such as aluminum plate, steel plate, iron plate, copper plate, etc., or may be made of polymer materials such as synthetic materials and composite materials.

[0074] In some embodiments, the sound-absorbing and heat-insulating layer includes a layer body, and a cavity exists inside the layer body. The cavity can reduce the weight of the sound-absorbing and heat-insulating layer.

[0075] In some embodiments, the cavity is at least one of a honeycomb structure, a triangular structure, a mesh structure, a multi-layer stacked structure, and a polygonal structure. In this case, the cavity includes multiple small cavities. The honeycomb structure is an existing mature structure that can reduce weight while maintaining good structural strength. The triangular structure and the polygonal structure can provide more space and significantly reduce the weight of the layer body.

[0076] In some embodiments, the interior of the cavity is a hollow structure; the cavity inside the layer body is an overall large cavity, which can greatly reduce the weight of the layer body; in this embodiment, in order to improve the structural strength of the layer body, a reinforcing column can be optionally provided inside the layer body, and the two ends of the reinforcing column are respectively connected to the inner wall of the layer body; the interior of the reinforcing column can be set to be hollow to further reduce the overall weight of the layer body, and the reinforcing column can be installed in the cavity by one or more methods of screws, welding, bonding, and snaps.

[0077] In some embodiments, the cavity is set to a vacuum state; a vacuum has good noise reduction and heat insulation properties; in addition, from a cost perspective, the cavity can be filled with air, and the enclosed air also has good noise reduction and heat insulation properties; of course, technicians in this field can also conceive of filling the cavity with insulation materials, such as insulation wool, rock wool, water, etc.

[0078] In some embodiments, the layer body is made of one or more of galvanized aluminum plate, aluminum plate, steel plate, aluminum-magnesium-manganese plate, PC plate, FRP, epoxy resin, carbon fiber, polycarbonate, and ceramic fiber board.

[0079] In some embodiments, the solar photovoltaic assembly is further provided with a junction box, which is electrically connected to the photovoltaic power generation module 200. The types of junction boxes include but are not limited to an integrated back-connected junction box, an integrated side-connected junction box, a split back-connected junction box, a split side-connected junction box, and an integrated suspended side-connected junction box; the outer box material of the junction box includes but is not limited to one or more of PPO (polyphenylene oxide), polycarbonate (PC), PC / ABS (polycarbonate and acrylonitrile-butadiene-styrene copolymer and mixture), and GRP (glass fiber reinforced polyester) materials.

[0080] In some embodiments, the connection method of the photovoltaic power generation module 200 includes one of back connection, side connection, split connection, etc.

[0081] In some embodiments, the solar photovoltaic assembly also includes a transverse bracket and a longitudinal bracket, which are connected to the frame 202 through a lap structure and are fixedly connected to each other, thereby forming a whole with the photovoltaic power generation module 200 and the supporting back plate 100.

[0082] In some embodiments, a plurality of photovoltaic power generation modules 200 are installed side by side on the transverse support and the longitudinal support, and a groove is formed between two adjacent overlapping structures to form a drainage groove.

[0083] In summary, the solar photovoltaic components in the present invention can adopt a component-type structure, an integrated structure, and an embedded structure, so that the product has better metal high-strength characteristics and fireproof characteristics. A variety of structures are integrated into one, and quick installation can be achieved. Compared with the solar photovoltaic components on the market, the solar photovoltaic components in the present invention are lighter in weight while achieving the same strength, and can solve the problem of mismatching thermal expansion and contraction coefficients of different materials. At the same time, the built-in sound-absorbing and heat-insulating layer 102 of multi-deformation hollow structures such as honeycombs is light in weight and has good sound insulation and heat insulation. It not only reduces the waste of steel frame bearing specifications, but also greatly reduces the product turnover and handling costs. It also has fireproof functions and does not have the risk of self-explosion of conventional photovoltaic curtain wall glass. The component-type structural design better overcomes thermal expansion and contraction, and solves the problem of mismatching expansion coefficients between solar photovoltaic components and the actual structural installation part; it is easy to install, simple and efficient, and has good waterproof and drainage functions.

[0084] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0085] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A solar photovoltaic module, characterized in that: It comprises photovoltaic power generation modules and supporting back plates stacked in sequence, wherein the supporting back plates are provided with a sound-absorbing and heat-insulating layer; It also includes an intermediate connection layer, which is arranged between the photovoltaic power generation module and the supporting backplane; The intermediate connecting layer is an isolation layer, and the isolation layer is provided with at least one of a buffer structure, a sound insulation structure, and a heat insulation structure; the buffer structure is made of a buffer material, including one or more of polystyrene foam, polyethylene foam, polyurethane foam, polyvinyl chloride foam, polypropylene foam, corrugated cardboard, air cushion film, and bulk material categories; the sound insulation structure is made of a sound insulation material, including one or more of glass fiber, rock wool, sponge sound-absorbing cotton, damping sound insulation felt, and polyester fiber sound-absorbing board; the heat insulation structure is made of a heat insulation material, including one or more of aluminum silicate, rock wool, and glass fiber fireproof and heat-insulating materials; Frames are arranged on both sides of the photovoltaic power generation module and the isolation layer, and the frames are fixedly connected to the support backplane; adhesive is arranged between the frame, the photovoltaic power generation module and the isolation layer; spacers are arranged on both sides of the isolation layer, the spacers fit the frame and adhesive is arranged between the photovoltaic power generation module and the frame, or adhesive is arranged between the photovoltaic power generation module and the frame, and between the spacers and the frame; the support backplane is provided with a front plate and a rear plate corresponding to the end faces of the sound-absorbing and heat-insulating layer close to and away from the photovoltaic power generation module, and the frame and the rear plate are integrally formed; The outer side of the frame is covered with a cover plate, the cover plate is fixedly connected to the supporting back plate, and one end of the cover plate extends to the surface of the photovoltaic power generation module, and the cover plate adopts an L-shaped or Z-shaped structure; The sound-absorbing and heat-insulating layer comprises a layer body, and the layer body is made of one or more of galvanized aluminum plate, aluminum plate, steel plate, aluminum-magnesium-manganese plate, PC, FRP, epoxy resin, carbon fiber, polycarbonate, and ceramic fiber board.

2. The solar photovoltaic assembly according to claim 1, characterized in that: The photovoltaic power generation module and the supporting backplane are connected by one or more of the following methods: I. The photovoltaic power generation module and the supporting back plate are fixed by bonding; II. The photovoltaic power generation module and the side of the supporting back plate are fixedly connected to a connecting plate at the same time.

3. The solar photovoltaic assembly according to claim 1, characterized in that: There is a cavity inside the layer body.

4. The solar photovoltaic assembly according to claim 3, characterized in that: The sound-absorbing and heat-insulating layer is one of the following forms: a. The cavity has at least one of a honeycomb structure, a triangular structure, a mesh structure, a multi-layer stacked structure, and a polygonal structure; b. The interior of the cavity is a hollow structure; c. The layer body is a hollow structure, and a reinforcing column is arranged inside the layer body, and both ends of the reinforcing column are respectively connected to the inner side wall of the layer body.

5. The solar photovoltaic assembly according to claim 3, characterized in that: The cavity is set to a vacuum state; Alternatively, the cavity is filled with heat insulating material.

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