A double-groove frame-mounted photovoltaic and photo-thermal integrated assembly

Abstract

The application discloses a double-groove frame-mounted photovoltaic and photo-thermal integrated assembly, which comprises an assembling frame, a photovoltaic panel, a heat-conducting film layer and a heat-collecting plate, the photovoltaic panel and the heat-collecting plate are detachably installed in the assembling frame, the heat-conducting film is arranged between the photovoltaic panel and the heat-collecting plate and is used for heat conduction and bonding between the photovoltaic panel and the heat-collecting plate, the photovoltaic panel is composed of laminated light-receiving glass, front encapsulating adhesive film, cell piece string, rear encapsulating adhesive film and insulating back plate laminated and heated and encapsulated, and the heat-collecting plate has central symmetry in X, Y and Z directions; the heat-collecting plate is designed to have symmetry in X, Y and Z directions, so that the flatness after sealing and welding is excellent, the close-fitting requirement with the photovoltaic panel can be met, and heat conduction and heat transfer are more favorable; the heat-conducting film layer has a certain thickness, is a flexible material and has tensile property, has the effect of resisting hidden cracks and can well combine the photovoltaic panel and the heat-collecting plate together.

Description

Technical Field

[0001] This invention relates to the field of integrated photovoltaic and solar thermal application technology, specifically to a dual-groove framed integrated photovoltaic and solar thermal module. Background Technology

[0002] Solar energy, as a green new energy source, has many advantages, including being inexhaustible and clean. Solar photovoltaic modules are increasingly replacing traditional fossil fuel combustion energy, becoming a green energy source with an ever-growing proportion. With technological advancements, the utilization of solar energy has made significant progress, with the photoelectric conversion efficiency of photovoltaic modules continuously improving. Solar thermal energy utilization is mainly focused on water heaters, primarily used in China to supply domestic hot water.

[0003] Photovoltaic thermal integrated modules and their application systems, abbreviated as PVT module systems, are systems that absorb heat energy on photovoltaic cells. They can absorb and reuse the heat emitted by photovoltaic cells during operation, thereby reducing the temperature of photovoltaic cells and improving power generation efficiency. The photothermal principle of the PVT system is to carry away the heat from the back of the module through a working medium (liquid working medium, such as water; gaseous working medium, such as Freon), so that power generation and heating can be combined. It is suitable for use in distributed power supply and heating sites such as rural rooftops and industrial plants.

[0004] Currently, universities, research institutions, and photovoltaic manufacturers have conducted extensive research and development work on PVT systems. However, the main difficulties in product development lie in the combination of photovoltaic power generation modules and solar thermal collectors. The photovoltaic power generation function and the solar thermal heat collection function use different corresponding materials. The two functional components are simply superimposed without being integrated into an integrated structural design, which causes significant problems in actual production. The products have poor reliability and cannot achieve industrialization, scale, and efficiency in the manufacturing industry.

[0005] Patent authorization announcement number CN213367725U and patent publication number CN 112532177 Patent A, filed on March 19, 2021, authorizes and announces "A High-Efficiency Solar Collector Photovoltaic Module." The photovoltaic panel's light-receiving surface material uses a transparent cover material, either transparent PET or fluororesin film, which differs from the glass used in conventional photovoltaic modules. Clearly, this patented technology cannot meet the safety and reliability requirements of 20 years or more in terms of flame retardancy, UV protection, and hail resistance, and cannot meet the 25 / 30-year warranty requirements of the photovoltaic industry. Furthermore, in the authorized and announced "High-Efficiency Solar Collector Photovoltaic Module," the photovoltaic functional panel is directly bonded to the solar collector substrate. Due to the direct bonding process, the bonding surface of the solar collector substrate needs to be flat. However, because the solar collector substrate requires raised flow channels internally, the other layer cannot be flat. This asymmetry between the two panels, coupled with the double-layer sealing and welding process, results in significant deformation of the entire solar collector substrate. After bonding with the photovoltaic functional panel, the solar cells experience fragmentation and microcracks, affecting the power generation function and lifespan of the photovoltaic cells. Therefore, the patented technology mentioned above is not a mature industrial product application technology and requires design changes and innovations.

[0006] Therefore, it is crucial to integrate the functions and materials of photovoltaic and solar thermal modules in a standardized and compatible manner, achieving the reliability and warranty life of existing photovoltaic modules, ensuring the flatness of the bonding process between the heat collector and the solar panel, and preparing the technology for the mass production and efficiency of PVT modules. Innovative PVT design is therefore of paramount importance.

[0007] This invention discloses an integrated product design scheme for photovoltaic and solar thermal modules. By integrating photovoltaic and solar thermal functions, the newly designed PVT module's production process and automated production equipment are compatible with existing conventional photovoltaic module production processes and equipment. The installation structure interface of the PVT module is also identical to that of conventional photovoltaic modules. This standardization of product design, component compatibility, and consistency in production processes and equipment enable the newly designed PVT module to quickly enter mass production, conforming to existing conventional photovoltaic module installation specifications, and rapidly enter the market for use.

[0008] This patented invention not only realizes the power generation and heating functions of photovoltaic thermal modules, improving the efficiency of photovoltaic power generation and heating performance; at the same time, the standardized and integrated design of photovoltaic frames and heat collection panels makes the material procurement, production process, automated equipment, and installation interface of PVT modules equivalent to existing conventional photovoltaic modules, realizing mass production, marketization, and efficiency. Summary of the Invention

[0009] The purpose of this invention is to provide a dual-groove framed photovoltaic-thermal integrated module.

[0010] To achieve the above-mentioned objectives, the technical solution adopted by this invention is as follows: a dual-groove framed photovoltaic-thermal integrated module, comprising an assembly frame, a photovoltaic panel, a thermally conductive film layer, and a heat-concentrating plate, wherein the photovoltaic panel and the heat-concentrating plate are detachably installed within the assembly frame; the thermally conductive film is disposed between the photovoltaic panel and the heat-concentrating plate for heat conduction and bonding between the photovoltaic panel and the heat-concentrating plate; the photovoltaic panel is composed of laminated and heated encapsulation of stacked light-receiving glass, a front encapsulation film, a string of solar cells, a rear encapsulation film, and an insulating backsheet; the heat-concentrating plate has central symmetry in the X, Y, and Z directions.

[0011] Preferably, the heat-conducting plate is formed by symmetrically welding and bonding a heat-conducting side plate and a heat-receiving side plate; a stamping part is provided between the heat-conducting side plate and the heat-receiving side plate, the stamping part forms an inner cavity flow channel, and inlet and outlet ports are provided at both ends of the inner cavity flow channel; the welded part of the heat-conducting side plate and the heat-receiving side plate forms a sealing area, the sealing area is used to seal the inner cavity flow channel.

[0012] Preferably, the inner cavity flow channel is composed of several interconnected flow channels to achieve a stable flow channel and reduce internal stress within the inner wall flow channel. Specifically, the inner cavity flow channel is composed of several S-shaped flow channels connected end to end.

[0013] Preferably, the inner cavity flow channel is composed of several parallel flow channels, increasing branches to enhance liquid convection, or forming a meandering flow channel to slow down the liquid flow rate and enhance heat conversion; since the inner cavity flow channel has central symmetry in both the X and Y directions, its internal stress is equal and symmetrical, which can prevent deformation inside the inner cavity flow channel.

[0014] Preferably, the inner cavity flow channel and the sealing area are centrally symmetrical in both the X and Y directions.

[0015] Preferably, the top surface of the inner cavity flow channel is a plane; more preferably, the top and bottom surfaces of the inner cavity flow channel have the same structure.

[0016] Preferably, the assembly frame is assembled from two long side frames and two short side frames. Both the long and short side frames are provided with photovoltaic grooves, solar thermal grooves, and corner bracket cavities. Adjacent long and short side frames are connected by interference fit corner fittings. The edges of the photovoltaic panel and the solar thermal plate are respectively installed in the photovoltaic grooves and solar thermal grooves.

[0017] Preferably, a gap is provided between the photovoltaic groove and the photovoltaic panel, and the gap between the photovoltaic groove and the photovoltaic panel is fully cured by sealant; a gap is provided between the solar thermal groove and the heat-concentrating plate, and the gap between the solar thermal groove and the heat-concentrating plate is fully cured by sealant.

[0018] Preferably, the photovoltaic channel is further provided with an overflow groove, and the gap between the overflow groove, the photovoltaic channel and the photovoltaic panel is fully cured by sealant; the height of the side of the photovoltaic channel away from the junction box is greater than the height of the side of the photovoltaic channel close to the junction box, so as to ensure that the sealant at the end of the photovoltaic panel can firmly fix the photovoltaic panel in the photovoltaic channel and prevent the photovoltaic panel from easily falling off the photovoltaic channel under the action of external force.

[0019] Preferably, the middle of both the upper and lower side walls of the photothermal tank protrudes towards the heat-gathering plate, forming a structure that is high at both ends and low in the middle.

[0020] Preferably, the light-receiving glass is ultra-thin tempered glass with a thickness of 0.5mm to 2.5mm; the materials of the front and rear sealing films are transparent EVA or transparent POE; since ultra-thin tempered glass has high strength, tensile strength and impact resistance, it is not easy to break due to deformation under heat and cold. Even if it breaks, it will break into particles without sharp edges, which greatly reduces the harm to the human body and the surrounding environment.

[0021] Preferably, the light transmittance of the pre-encapsulation film is required to be greater than 85%; since the light-receiving glass has high light transmittance and can maintain high light transmittance for a long time, the light transmittance of the pre-encapsulation film is not particularly high.

[0022] Preferably, the light transmittance of the pre-encapsulation film is required to be greater than 90%.

[0023] Preferably, the thickness of the thermally conductive film layer is 0.5 to 2.0 mm, and its material is one of thermally conductive putty, thermally conductive adhesive, thermally conductive film, thermally conductive pad, and double-sided adhesive film; the thermally conductive film layer has a certain thickness, is a flexible material with tensile properties, and has the function of resisting microcracks, which can effectively combine the photovoltaic panel and the thermal concentrator.

[0024] The thickness of the heat-conducting side plate and the heat-receiving side plate is 0.5-1.0 mm, and the material is one of steel plate, aluminum plate and copper plate; the heat-conducting side plate realizes rapid cooling of photovoltaic panel; the heat-receiving side plate realizes cooling of surrounding environment and photovoltaic panel through effective contact area with air, and also improves heating efficiency.

[0025] Both the long and short frames are made of die-cast aluminum profiles, which are not easily deformed.

[0026] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0027] 1. This invention discloses a double-groove framed photovoltaic-thermal integrated module, which adds a solar thermal groove to the photovoltaic groove to achieve a photovoltaic-thermal integrated structure; the light-receiving surface of the photovoltaic panel is set as ultra-thin tempered glass to ensure that the photovoltaic power generation has a 25-year warranty reliability.

[0028] 2. The heat-concentrating plate structure in this invention is designed with symmetry in the X, Y, and Z directions, which results in excellent flatness after sealing and welding, achieving the requirement of tight fit with the photovoltaic panel and being more conducive to heat conduction and heat transfer.

[0029] 3. In this invention, the thermally conductive film layer has a certain thickness, is a flexible material with tensile properties, and has the function of resisting microcracks, which can effectively combine the photovoltaic panel and the thermal concentrator.

[0030] 4. The heat-concentrating plate of the present invention can effectively absorb heat in the ambient space and improve the utilization rate of thermal energy; its internal stress is equal and symmetrical, which can prevent the entire heat-concentrating plate from deforming due to temperature difference or other reasons.

[0031] 5. The photovoltaic thermal module of the present invention is compatible with the production processes, automated manufacturing equipment, and unified module installation structure interfaces of conventional modules;

[0032] 6. This invention not only realizes the power generation and heating functions of photovoltaic thermal modules, improving the efficiency of photovoltaic power generation and heating performance; at the same time, the standardized and professional manufacturing design of photovoltaic frames and heat collection panels makes the material procurement, production process, automated equipment, and installation interface of PVT modules equivalent to existing conventional photovoltaic modules, realizing mass production, marketization, and efficiency, and is suitable for widespread application. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of the photovoltaic thermal module of the present invention;

[0034] Figure 2 This is a schematic diagram of the cross-sectional structure of the assembly frame of the present invention;

[0035] Figure 3 This is an exploded view of the present invention;

[0036] Figure 4 This is an exploded view of the photovoltaic panel of the present invention;

[0037] Figure 5 This is an exploded schematic diagram of the heat-concentrating plate of the present invention;

[0038] Figure 6 This is a schematic diagram of the symmetrical structure of the internal flow channel of the heat-concentrating plate in an embodiment of the present invention;

[0039] Figure 7 This is an enlarged schematic diagram of the cross-section D of the internal flow channel of the present invention;

[0040] Figure 8 This is a schematic diagram of the sealing area structure of the heat-concentrating plate welding of the present invention;

[0041] Figure 9This is an exploded view of the present invention from another angle;

[0042] Figure 10 This is a schematic diagram showing the front view of the photovoltaic thermal module of the present invention;

[0043] Figure 11 This is a schematic diagram showing the back view of the photovoltaic thermal module of the present invention.

[0044] The components are: 10. Photovoltaic thermal module; 20. Photovoltaic panel; 21. Light-receiving glass; 22. Front encapsulation film; 23. Cell string; 24. Rear encapsulation film; 25. Insulating backsheet; 30. Thermally conductive film layer; 40. Heat-concentrating plate; 41. Thermally conductive side plate; 42. Heat-receiving side plate; 43. Inner cavity flow channel; 44. Inlet and outlet pipes; 45. Sealing area; 50. Long frame; 51. Photovoltaic groove; 52. Photothermal groove; 53. Corner code cavity; 60. Short frame; 61. Connecting corner code; 70. Sealant; 80. External pipeline. Detailed Implementation

[0045] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner. Therefore, they only show the components related to the present invention. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0046] Please refer to Figure 1-11 This embodiment mainly introduces a double-groove framed photovoltaic-thermal integrated module. The photovoltaic-thermal module 10 includes an assembly frame, a photovoltaic panel 20, a thermally conductive film layer 30, and a heat-concentrating plate 40. The photovoltaic panel 20 and the heat-concentrating plate 40 are detachably installed in the assembly frame.

[0047] The photovoltaic panel 20 has a junction box and outgoing wires in the middle, and the heat collection plate 40 has a through hole in the middle corresponding to the junction box. The photovoltaic panel 20 absorbs light energy to generate photovoltaic power, and the junction box is used for power output.

[0048] The photovoltaic panel 20 is formed by heating and encapsulating a stacked array of light-receiving glass 21, a front encapsulating film, a cell string 23, a rear encapsulating film 24, and an insulating backsheet 25 in a photovoltaic laminating machine. The light-receiving glass 21 is ultra-thin tempered glass with a thickness of 0.5mm to 2.5mm. Because ultra-thin tempered glass passes patented fire resistance tests, the product's reliability and lifespan can reach the 25-year warranty of photovoltaic modules, and it is not corroded by bird droppings, rainwater, or other substances. Furthermore, ultra-thin tempered glass has high strength, tensile strength, and impact resistance, making it less prone to breakage due to deformation under heat and cold. Even if it breaks, it shatters into blunt-edged particles, greatly reducing harm to humans and the surrounding environment. The front and rear encapsulating films 24 are made of ethylene-vinyl acetate copolymer or polyolefin elastomer, with the front encapsulating film requiring a light transmittance greater than 85%. The insulating backsheet 25 is made of a PET-based film.

[0049] The photovoltaic panel 20 of this application has a cuboid structure with high flatness.

[0050] The heat-concentrating plate 40 consists of a heat-conducting side plate 41 and a heat-receiving side plate 42, both made of copper plates with a thickness of 0.5–1.0 mm. A stamped portion is provided between the heat-conducting side plate 41 and the heat-receiving side plate 42, forming an inner cavity flow channel 43. Inlet and outlet ports 44 are provided at both ends of the inner cavity flow channel 43. The welded portion of the heat-conducting side plate 41 and the heat-receiving side plate 42 forms a sealing area 45, which seals the inner cavity flow channel 43. When all the inner cavity flow channels 43 on the heat-concentrating plate 40 are in operation... After sealing, only the inlet and outlet pipes 44 remain. The inlet and outlet pipes 44 extend out of the short frame 60 and are connected to the external pipeline 80 for heat exchange. At this time, the entire heat-collecting plate 40 forms a sealed circulation system, which can serve as a heat exchange circulation system. Under the flow of the refrigerant, the heat of the photovoltaic panel is carried away, reducing the temperature of the photovoltaic panel 20 itself and improving the power generation efficiency of the photovoltaic panel 20. The heated side plate 42 of the heat-collecting plate 40 can also absorb the heat of the installation and use environment, which also improves the heating efficiency.

[0051] The heat-collecting plate 40 has central symmetry in the X, Y and Z directions to ensure that the internal stress of the heat-collecting plate 40 is equal and symmetrical in the X, Y and Z directions, and to prevent the entire heat-collecting plate 40 from deforming due to temperature difference or other reasons.

[0052] The central symmetry in the Z direction is reflected in the fact that the heat-concentrating plate 40 is symmetrically welded together from a heat-conducting side plate 41 and a heat-receiving side plate 42 with the same structure. When the heat-conducting side plate 41 and the heat-receiving side plate 42 are stacked together, the internal stress on both sides of the heat-concentrating plate 40 is the same and symmetrical when subjected to external force and temperature changes, which can effectively prevent the deformation of the entire heat-concentrating plate 40.

[0053] The central symmetry in the X and Y directions is reflected in the fact that the inner cavity flow channel 43 and the sealing area 45 are centrally symmetrical in both the X and Y directions. The sealing area 45 is designed symmetrically to ensure that the internal stress of the welding is equal and symmetrical, preventing deformation of the entire heat-concentrating plate 40. The cross-section of the inner cavity flow channel 43 is symmetrically arranged along the Z direction. Due to the stamping design of the inner cavity flow channel 43, the upper and lower surfaces of the heat-concentrating plate 40 have the same structure and both have planes and grooves. The upper surface of the heat-concentrating plate 40, i.e. the upper surface of the heat-conducting side plate 41, fully absorbs the heat from the lower surface of the photovoltaic panel 20. The purpose is to ensure that the upper surface of the heat-conducting side plate 41 can effectively adhere to the photovoltaic panel 20 with the same flatness, which is beneficial for heat conduction and enables the photovoltaic panel 20 to cool down quickly.

[0054] The lower surface of the heat-collecting plate 40, i.e. the lower surface of the heated side plate 42, forms several grooves, i.e. undulating structures, which increases the effective contact area with air. By cooling the surrounding environment, the photovoltaic panel 20 is cooled, which also improves the heating efficiency.

[0055] The thermally conductive film layer 30 has a thickness of 0.5 to 2.0 mm and is used for heat conduction and bonding between the photovoltaic panel 20 and the heat-concentrating plate 40. The upper and lower planes of the thermally conductive film layer 30 are in contact with the photovoltaic panel 20 and the heat-concentrating plate 40, respectively, which can effectively prevent the photovoltaic panel 20 and the heat-concentrating plate 40 from falling off.

[0056] Since both the photovoltaic panel 20 and the thermal concentrator 40 are rigid bodies, their deformation degrees differ under heating and cooling, which can lead to problems such as microcracks in the cells or subsequent detachment. To solve this problem, existing technologies mostly use transparent PET or fluoropolymer films as transparent cover materials instead of glass. However, transparent cover materials cannot pass fire resistance tests, do not have excellent light transmittance, and their light transmittance gradually decreases over time, resulting in product reliability and lifespan that cannot reach the 25-year warranty of photovoltaic modules, thus limiting their application. In contrast, this application uses a thermally conductive film layer 30, which is a flexible material that can accommodate a certain degree of deformation. This effectively avoids microcracks caused by the inconsistent deformation degrees of the photovoltaic panel 20 and the thermal concentrator 40. Furthermore, even if the cell string 23 breaks, the bonding effect of the thermally conductive film layer 30 can ensure the short-term connection of the cell string 23, providing time for emergency repairs. If the light-receiving glass 21 breaks, it can also effectively prevent environmental pollution caused by flying glass shards, greatly reducing harm to human health and the surrounding environment.

[0057] The assembly frame is assembled from two long frame frames 50 and two short frame frames 60. Both the long frame frames 50 and the short frame frames 60 are provided with photovoltaic grooves 51, solar thermal grooves 52 and corner bracket cavities 53. The corner bracket cavity 53 of the short frame frame 60 has a connecting corner bracket 61. Adjacent long frame frames 50 and short frame frames 60 are assembled and fixed together by the connecting corner bracket 61, and the connecting corner bracket 61 is inserted into the corner bracket cavity 53 with an interference fit.

[0058] The edges of the photovoltaic panel 20 and the heat-collecting plate 40 are respectively installed in the photovoltaic groove 51 and the solar thermal groove 52. A gap is provided between the photovoltaic groove 51 and the photovoltaic panel 20. An overflow groove is also provided in the photovoltaic groove 51. The overflow groove, the gap between the photovoltaic groove 51 and the photovoltaic panel 20 are fully cured by the sealant 70. The height of the side of the photovoltaic groove 51 away from the junction box is greater than the height of the side of the photovoltaic groove 51 close to the junction box, so as to ensure that the sealant 70 at the end of the photovoltaic panel 20 can firmly fix the photovoltaic panel 20 in the photovoltaic groove 51 and prevent the photovoltaic panel 20 from easily falling off the photovoltaic groove 51 under the action of external force.

[0059] The middle of both the upper and lower side walls of the photovoltaic thermal trough 52 protrudes towards the heat-gathering plate 40, forming a structure that is high at both ends and low in the middle. The higher setting at the end closer to the junction box facilitates the insertion of the heat-gathering plate 40 into the photovoltaic thermal trough 52 and serves as a guide. The higher setting at the end farther from the junction box allows the heat-gathering plate 40 to be firmly fixed in the photovoltaic thermal trough 52 using sealant 70, preventing the photovoltaic thermal plate from easily falling off the photovoltaic trough 51 under external force.

[0060] The lower middle section acts as a clamp to the heat-collecting plate 40, which can better fix the heat-collecting plate 40, ensure the horizontality of the heat-collecting plate 40, and fit the photovoltaic panel 20 better; and the height of the middle section is less than that of the end far from the junction box, which can prevent the solar thermal plate from falling directly out of the photovoltaic groove 51 under external force.

[0061] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0062] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0063] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to the above embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dual-groove frame-mounted photovoltaic-photothermal integrated assembly, characterized in that, comprising an assembly frame, a photovoltaic panel (20), a heat-conducting film layer (30), and a heat-collecting panel (40), the photovoltaic panel (20) and the heat-collecting panel (40) being detachably installed in the assembly frame; the heat-conducting film layer (30) being arranged between the photovoltaic panel (20) and the heat-collecting panel (40) for heat conduction and bonding between the photovoltaic panel (20) and the heat-collecting panel (40); the photovoltaic panel (20) being composed of laminated and heat-sealed packaging of a light-receiving glass (21), a front encapsulating adhesive film, a cell string (23), a rear encapsulating adhesive film (24), and an insulating backboard (25); the heat-collecting panel (40) having central symmetry in X, Y, and Z directions, the heat-collecting panel (40) being symmetrically welded and attached by a heat-conducting side plate (41) and a heat-receiving side plate (42); a stamping part being arranged between the heat-conducting side plate (41) and the heat-receiving side plate (42), the stamping part forming an internal cavity flow channel (43), both ends of the internal cavity flow channel (43) being provided with inlet and outlet ports (44), the inlet and outlet ports (44) being connected with an external pipeline (80); a welded part of the heat-conducting side plate (41) and the heat-receiving side plate (42) forming a sealing area (45), the sealing area (45) being used for sealing the internal cavity flow channel (43). The internal cavity flow channel (43) and the sealing area (45) have central symmetry in X and Y directions. A top surface of the internal cavity flow channel (43) is a plane. The assembly frame is assembled by two long side frames (50) and two short side frames (60), the long side frame (50) and the short side frame (60) are both provided with a photovoltaic groove (51), a photothermal groove (52), and a corner code cavity (53), adjacent long side frames (50) and short side frames (60) are connected by an interference fit connecting corner; edges of the photovoltaic panel (20) and the heat-collecting panel (40) are respectively installed in the photovoltaic groove (51) and the photothermal groove (52). A gap is arranged between the photovoltaic groove (51) and the photovoltaic panel (20), the gap between the photovoltaic groove (51) and the photovoltaic panel (20) is fully cured by a sealing adhesive (70); a gap is arranged between the photothermal groove (52) and the heat-collecting panel (40), the gap between the photothermal groove (52) and the heat-collecting panel (40) is fully cured by a sealing adhesive (70).

2. The dual channel framed photovoltaic-photothermal integrated assembly of claim 1, wherein, The light-receiving glass (21) is an ultrathin tempered glass with a thickness of 0.5mm-2.5mm; materials of the front encapsulating adhesive film and the rear encapsulating adhesive film (24) are transparent EVA or transparent POE.

3. The dual channel framed photovoltaic-photothermal integrated assembly of claim 1, wherein, The heat-conducting film layer (30) has a thickness of 0.5-2.0mm, and is made of one of a heat-conducting mud, a heat-conducting adhesive, a heat-conducting film, a heat-conducting gasket, and a double-sided adhesive film.

4. The dual channel framed photovoltaic-photothermal integrated assembly of claim 1, wherein, The heat-conducting side plate (41) and the heat-receiving side plate (42) have a thickness of 0.5-1.0mm, and are made of one of a steel plate, an aluminum plate, and a copper plate.

5. The dual channel framed photovoltaic-photothermal integrated assembly of claim 4, wherein, The long side frame (50) and the short side frame (60) are both made of die-cast aluminum profiles.

6. The dual channel framed photovoltaic-photothermal integrated assembly of claim 1, wherein, ​ 7. The dual channel framed photovoltaic-photothermal integrated assembly of claim 1, wherein, ​ 8. The dual channel framed photovoltaic-photothermal integrated assembly of claim 2, wherein, ​ 9. The dual channel framed photovoltaic-photothermal integrated assembly of claim 4, wherein, ​

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