A photovoltaic power generation device integrating light and heat

Abstract

The present invention discloses a photovoltaic power generation device that integrates light and heat. The device comprises a hollow mounting frame and a photovoltaic module mounted on the mounting frame via a mounting tube. The mounting frame has an inner cavity comprising a water inlet cavity and a water outlet cavity, and the mounting frame is provided with a water inlet and a water outlet. The photovoltaic module comprises a photovoltaic unit, a back plate mounted on the back of the photovoltaic unit, and frame profiles mounted on four sides of the photovoltaic unit and connected in sequence. The frame profiles, back plate, and photovoltaic unit enclose a heating cavity. The photovoltaic power generation device integrates light and heat by combining the photovoltaic unit, back plate, and frame profiles to form a photovoltaic module with a heating cavity. The photovoltaic module is then connected to the mounting frame via the mounting tube, making it convenient to directly install it on a building. This not only reduces the assembly burden on workers, but also increases the contact area between water and the photovoltaic unit, improving heat exchange efficiency, facilitating and quickly cooling the photovoltaic unit and heating the water, thereby increasing photovoltaic power generation and hot water storage.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic power generation and light-heat integration, and in particular to a photovoltaic power generation device with light-heat integration. Background Art

[0002] The integrated solar thermal system consists primarily of two components: photovoltaic and solar thermal. The photovoltaic component utilizes technologically proven solar panels, providing the building with the required electricity through a control system. It primarily includes components such as photovoltaic cells, batteries, inverters, and controllers. The solar thermal component, on the other hand, primarily consists of a collector, converting solar energy into heat. It also utilizes a thermal cycle mechanism to cool the solar cells, improving photoelectric conversion efficiency and enabling more efficient use of solar thermal energy.

[0003] In the existing technology, photovoltaic thermal modules are usually composed of photovoltaic modules, frame profiles arranged around the outer edge of the photovoltaic modules, and water pipes laid on the back of the photovoltaic modules. The frame profiles are connected end to end in sequence to form a closed frame to protect the photovoltaic modules. When the photovoltaic modules are in operation, the heat generated is absorbed by the water stored in the water pipes, which increases the water temperature and makes it convenient for people to use the hot water in the water pipes for bathing and other daily necessities. While the temperature of the photovoltaic modules is reduced, the photovoltaic power generation is increased to meet the daily electricity needs of people in the building.

[0004] However, in the above-mentioned photovoltaic thermal modules, most of the frame profiles used have cavities, and adjacent frame profiles need to be connected by corner brackets, which not only increases the overall weight and production cost of the photovoltaic module frame, but is also not conducive to its transportation and assembly; moreover, in the above-mentioned device, the photovoltaic modules and water pipes are installed in a split manner. When laid on the top surface of the building, the photovoltaic modules, water pipes and brackets for fixing the photovoltaic modules need to be installed step by step, which increases the workload of the workers. Moreover, the contact area between the water pipes and the photovoltaic modules is limited, resulting in difficulty for the water flowing in the water pipes to fully and efficiently exchange heat with the photovoltaic modules, thereby reducing the heat transfer efficiency.

[0005] Therefore, it is necessary to improve the photovoltaic thermal device in the prior art. Summary of the Invention

[0006] The purpose of the present invention is to overcome the defects in the prior art and provide a photovoltaic power generation device with light weight, low cost, convenient assembly, and improved installation efficiency and heat exchange efficiency.

[0007] In order to achieve the above technical effects, the technical solution of the present invention is: a photovoltaic power generation device with integrated light and heat, comprising a hollow mounting frame and a photovoltaic component arranged on the mounting frame through a mounting tube, the inner cavity of the mounting frame comprising a water inlet cavity and a water outlet cavity, the mounting frame is provided with a water inlet connected to the water inlet cavity and a water outlet connected to the water outlet cavity; the photovoltaic component comprises a photovoltaic unit, a back plate arranged on the back of the photovoltaic unit, and a frame profile arranged on four sides of the photovoltaic unit and connected in sequence, the frame profile, the back plate and the photovoltaic unit enclose a heating cavity; the mounting tube comprises a water inlet pipe and a water outlet pipe, the water inlet cavity, the tube cavity of the water inlet pipe, the heating cavity, the tube cavity of the water outlet pipe and the water outlet cavity are connected in sequence.

[0008] Preferably, in order to reduce the amount of production materials used for the frame profile, reduce production costs, reduce weight, facilitate transportation and assembly, and reduce the assembly burden on workers, the cross-section of the frame profile is U-shaped, and the frame profile includes an upper horizontal wall, a vertical wall and a lower horizontal wall connected in sequence, and the upper horizontal wall and the lower horizontal wall are respectively sealed with the photovoltaic unit and the back panel.

[0009] Preferably, in order to facilitate the fastening of the back plate, a plug hole is provided on the lower horizontal wall, and the mounting tube includes a pressure tube that is plugged into and sealed with the plug hole, and a clamping protrusion is provided at one end of the pressure tube adjacent to the upper horizontal wall, and the back plate is clamped between the clamping protrusion and the lower horizontal wall, and the other end of the pressure tube is threadedly connected to a clamping tube, and the lower horizontal wall is clamped between the back plate and the clamping tube, and the inner cavity of the clamping tube is connected to the inner cavity of the mounting frame.

[0010] Preferably, in order to lock the photovoltaic unit while tightening the back plate, a top tube sealedly connected to it is provided in the pressing tube, the photovoltaic unit is clamped between the upper transverse wall and the top tube, a supporting protrusion is provided on the circumferential inner wall of the clamping tube, the top tube abuts against the supporting protrusion, a through hole is provided on the top tube, and the tube cavity of the top tube is connected to the heating chamber through the through hole.

[0011] Preferably, in order to facilitate the quick connection of the clamping tube and the mounting bracket, the clamping tube and the mounting bracket are connected by a snap-fit connection.

[0012] Preferably, in order to strengthen the connection between the clamping tube and the mounting frame, a convex ring is fixed to the circumferential outer edge of the clamping tube, and the mounting frame is provided with latching teeth, and the convex ring is engaged with the latching teeth.

[0013] Preferably, in order to facilitate the connection between the back plate and the pressure tube and ensure the sealing after the back plate and the pressure tube are connected, a first notch is provided on the circumferential outer edge of the back plate, and the first notch is adapted to the pressure tube.

[0014] Preferably, in order to further enhance the sealing of the heating chamber, a lower sealing strip is provided on the lower horizontal wall, and a second notch is provided on the side of the lower sealing strip adjacent to the back plate. The first notch and the second notch are combined to form a sealing opening, and the circumferential inner wall of the sealing opening is in contact with the circumferential outer edge of the pressure tube.

[0015] Preferably, in order to reduce the overall thickness of the heating chamber so that the water in the heater is close to the photovoltaic unit to improve the heat exchange efficiency between the water and the photovoltaic component, the back plate includes an edge portion arranged at its circumferential outer edge and a center portion arranged on the inner side of the edge portion, the distance between the center portion and the photovoltaic unit is smaller than the distance between the edge portion and the photovoltaic unit, and the center portion is gradually transitioned to the edge portion.

[0016] Preferably, in order to facilitate the control of water inlet and water outlet in the heating chamber, the water inlet is connected to a water inlet valve, and the water outlet is connected to a water outlet valve.

[0017] To sum up, compared with the prior art, the integrated photothermal photovoltaic power generation device of the present invention forms a photovoltaic module with a heating cavity by combining a photovoltaic unit, a back panel and a frame profile, and then connects the photovoltaic module to the mounting frame through a mounting tube, which is convenient for direct installation on a building. On the one hand, it reduces the assembly burden of workers, and on the other hand, it increases the contact area between water and the photovoltaic unit, improves the heat exchange efficiency, and facilitates rapid cooling of the photovoltaic unit and heating of the water, thereby increasing the photovoltaic power generation and the hot water storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the frame profile of the prior art;

[0019] Figure 2 This is a schematic diagram of the connection structure between the frame profile and the photovoltaic unit in the prior art;

[0020] Figure 3 It is a structural schematic diagram of the present invention;

[0021] Figure 4 yes Figure 3 A top view of

[0022] Figure 5 yes Figure 4 AA section view;

[0023] Figure 6 yes Figure 5 A magnified view of part A;

[0024] Figure 7 yes Figure 1 Front view of

[0025] Figure 8It is a structural schematic diagram of the mounting frame of the present invention;

[0026] Figure 9 yes Figure 8 Explosion diagram of

[0027] Figure 10 yes Figure 8 Front view of

[0028] Figure 11 yes Figure 10 BB section view;

[0029] Figure 12 It is a schematic structural diagram of the photovoltaic module of the present invention;

[0030] Figure 13 It is an exploded schematic diagram of the present invention;

[0031] Figure 14 It is an exploded schematic diagram of another perspective of the present invention;

[0032] Figure 15 It is a structural schematic diagram of the back plate of the present invention;

[0033] Figure 16 This is a schematic diagram of the connection structure between the frame profile and the mounting pipe of the present invention;

[0034] Figure 17 yes Figure 16 Explosion diagram of

[0035] Figure 18 It is a schematic structural diagram of the installation pipe of the present invention;

[0036] Figure 19 yes Figure 18 Explosion diagram of

[0037] Figure 20 yes Figure 19 Front view of

[0038] Figure 21 yes Figure 20 CC section of ;

[0039] In the figure: 100. Mounting frame, 101. Water inlet cavity, 102. Water outlet cavity, 103. Water inlet, 104. Water outlet, 200. Mounting pipe, 300. Mounting shell, 400. Shell cover, 401. Docking port, 500. Photovoltaic unit, 501. Cell layer, 502. Silicone layer, 503. Glass layer, 600. Back sheet, 601. First notch, 602. Edge portion, 603. Center portion, 700. Frame profile, 701. Upper horizontal wall, 702. Vertical wall, 703. Lower horizontal wall, 7031. Connecting hole, 704. Cavity, 705. Extension wall, 800. Heating chamber, 900. Pressing tube, 901. Pressing protrusion, 110. Clamping tube, 111. Supporting protrusion, 112. Raised ring, 120. Top tube, 121. Through hole, 130. Gear, 140. Upper sealing strip, 150. Lower sealing strip, 151. Second notch, 160. Water inlet valve, 170. Water outlet valve, 180. Separator. DETAILED DESCRIPTION

[0040] The following embodiments are further described in conjunction with the accompanying drawings and examples. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention.

[0041] The frames used for photovoltaic modules in the prior art are mostly composed of four frame profiles 700 connected end to end in sequence. The specific structure of the frame profile 700 is as follows: Figure 1 As shown, an assembly groove and a cavity 704 are integrally formed on the frame profile 700. Both the assembly groove and the cavity 704 extend along the length direction of the frame profile 700, and the cavity 704 is located directly below the assembly groove. One side of the cavity 704 is also provided with an extension wall 705 formed at the bottom of the frame profile 700. The extension wall 705 is used to install the frame profile 700 on the bracket of the photovoltaic module by drilling holes on its surface and using fasteners such as screws or bolts.

[0042] The connection structure between the frame profile 700 and the photovoltaic unit 500 is as follows: Figure 2 As shown, the assembly groove of the frame profile 700 is sealed and connected to one of the side edges of the photovoltaic unit 500. Four frame profiles 700 are connected end to end in sequence to form a frame surrounding the circumferential outer edge of the photovoltaic unit 500. Two adjacent frame profiles 700 are connected by angle codes (not shown in the figure). Specifically, the two ends of the angle code are inserted into the cavity 704 of the two adjacent frame profiles 700; then holes are punched on the extension wall 705 of the frame profile 700 to fix the photovoltaic module on the mounting bracket.

[0043] When the photovoltaic modules are assembled and installed in the above manner, since the frame profile 700 has a cavity 704 and an extension wall 705 is provided on one side of the cavity 704, the amount of production materials used for the frame profile 700 increases, thereby increasing the production cost. At the same time, the weight of the frame profile 700 increases, which is not conducive to transportation and increases the assembly burden of the workers. Moreover, the extension wall 705 is provided on the side of the frame profile 700 facing the assembly groove notch, resulting in the screws being located below the photovoltaic unit 500 during installation and being blocked by the photovoltaic unit 500, which is not conducive to installation. Setting the extension wall 705 on the side facing away from the assembly groove notch will increase the spacing between adjacent photovoltaic modules, reduce the number of photovoltaic modules that can be laid on the fixed installation surface, and reduce the photovoltaic power generation.

[0044] In addition, in order to achieve the effect of integrated photothermal treatment, water pipes need to be installed on the back of the photovoltaic unit 500, which makes the construction steps complicated and increases the burden on workers. In addition, the contact area between the water pipes and the photovoltaic unit 500 is small, resulting in a low heat exchange rate.

[0045] To this end, the present invention provides a photovoltaic power generation device that integrates light and heat, such as Figure 3-Figure 21 As shown, it includes a hollow mounting frame 100, and the photovoltaic module is connected to the top of the mounting frame 100 through ten mounting tubes 200. The inner cavity of the mounting frame 100 includes a water inlet cavity 101 and a water outlet cavity 102. The mounting frame 100 is also provided with a water inlet 103 and a water outlet 104. The water inlet 103 is connected to the water inlet cavity 101, and the water outlet 104 is connected to the water outlet cavity 102.

[0046] The photovoltaic module includes a photovoltaic unit 500. The back of the photovoltaic unit 500 (specifically, the side of the photovoltaic unit 500 facing away from the sun) is provided with a back sheet 600. The module also includes four frame profiles 700 connected end to end. The four frame profiles 700 are arranged around the four sides of the photovoltaic unit 500 and the back sheet 600. The photovoltaic unit 500, the back sheet 600, and the four frame profiles 700 enclose a heating chamber 800.

[0047] Among the ten installation pipes 200, five are water inlet pipes and the other five are water outlet pipes. The two ends of the water inlet pipe lumen are respectively connected to the water inlet chamber 101 and the heating chamber 800, and the two ends of the water outlet pipe lumen are respectively connected to the water outlet chamber 102 and the heating chamber 800.

[0048] In the photovoltaic assembly of the above-mentioned photovoltaic power generation device, a heating chamber 800 is formed by enclosing the photovoltaic unit 500, the back plate 600 and the four frame profiles 700. The heating chamber 800 is used to store water. When the photovoltaic unit 500 generates electricity, the water in the heating chamber 800 exchanges heat with the photovoltaic unit 500. On the one hand, the heat of the photovoltaic unit 500 is reduced and the photovoltaic power generation is increased. On the other hand, the water temperature is increased, and hot water is convenient for people's daily needs, such as bathing. In addition, since the photovoltaic unit 500, the back plate 600 and the four frame profiles 700 enclose the heating chamber 800, the contact area between the water in the heating chamber 800 and the photovoltaic unit 500 is increased, so that after the heating chamber 800 is filled with water, the water can completely contact the back of the photovoltaic unit 500, further increasing the heat exchange amount, improving the heat exchange effect on the photovoltaic unit 500 and the heating effect on the water in the heating chamber 800.

[0049] The photovoltaic module is connected to the hollow mounting frame 100 through the mounting tube 200. The mounting frame 100 is directly installed on the top of the building to fix the position of the photovoltaic module. The mounting frame 100 is hollow, and its inner cavity is divided into a water inlet cavity 101 and a water outlet cavity 102. A water inlet 103 and a water outlet 104 are set on the mounting frame 100. The ten mounting tubes 200 are divided into two parts: a water inlet pipe and a water outlet pipe. After water enters the water inlet cavity 101 from the water inlet 103, it enters the heating cavity 800 through the five water inlet pipes. After contacting and exchanging heat with the photovoltaic unit 500, the temperature rises, and then enters the water outlet cavity 102 through the five water outlet pipes, and is discharged from the water outlet 104 for people's use.

[0050] After adopting the above method, after the photovoltaic module is connected to the mounting frame 100, there is no need to assemble water pipes one by one, which greatly reduces the installation burden of workers, ensures heat exchange, facilitates construction, and improves assembly efficiency.

[0051] The specific structure of the photovoltaic unit 500 in the present invention is as follows Figure 13 As shown, it includes a cell layer 501 and a glass layer 503 arranged on the front and back sides of the cell layer 501, a silicone layer 502 is arranged between the cell layer 501 and the glass layer 503, and the cell layer 501, the silicone layer 502 and the glass layer 503 are stacked and connected, and laminated by a laminator to form an integrated photovoltaic unit 500.

[0052] The specific structure of the mounting frame 100 is as follows Figure 7-11As shown, it includes a mounting shell 300 with an open top and a shell cover 400 provided on the top of the mounting shell 300. The shell cover 400 is a rectangular frame structure. Two partition blocks 180 are fixed in the mounting shell 300, which are respectively located at the two ends of the inner side of the mounting shell 300. The water inlet 103 and the water outlet 104 are respectively provided on both sides of the mounting shell 300. The mounting shell 300, the shell cover 400 and the two partition blocks 180 enclose a water inlet chamber 101 connected to the water inlet 103 and a water outlet chamber 102 connected to the water outlet 104; the mounting shell 300 and the shell cover 400 can also be fixedly connected by welding to prevent the two from separating. Ten docking ports 401 are also provided on the shell cover 400, which are respectively connected to the ten mounting pipes 200. Among the ten docking ports 401, four are respectively arranged at the end positions of the shell cover 400 in pairs, and the remaining six, three of which are located on one side of the shell cover 400, and the other three are located on the other side of the shell cover 400.

[0053] like Figure 6 、 Figure 16 and Figure 17 As shown, the cross-section of the frame profile 700 is U-shaped, that is, the frame profile 700 is integrally formed into an assembly groove, and the frame profile 700 includes an upper horizontal wall 701, a vertical wall 702 and a lower horizontal wall 703 connected in sequence, and the upper horizontal wall 701, the vertical wall 702 and the lower horizontal wall 703 all extend along the length direction of the frame profile 700, and the upper horizontal wall 701 is sealed to the glass layer 503 on the front side of the cell layer 501 in the photovoltaic unit 500, and the lower horizontal wall 703 is sealed to the glass layer 503 on the back side of the cell layer 501 in the photovoltaic unit 500.

[0054] After adopting the above structure, the frame profile 700 only has the assembly groove, but no Figure 1 The cavity 704 and the extension wall 705 in the frame profile 700 therefore reduce the weight of the frame profile 700, facilitate transportation and assembly, and reduce the installation burden on workers. On the other hand, it reduces the amount of production materials used for the frame profile 700, thereby reducing production costs.

[0055] like Figure 6 、 Figure 13 and Figure 14 As shown, the four frame profiles 700 are divided into two long side profiles and two short side profiles. The long side profiles are connected to the long sides of the photovoltaic unit 500, and the short side profiles are connected to the short sides of the photovoltaic unit 500. The lower horizontal walls 703 of the four frame profiles 700 are all provided with plug-in holes 7031, of which three are on the long side profiles and two are on the short side profiles. There are ten plug-in holes 7031 in total, which are connected one-to-one with the ten mounting tubes 200.

[0056] like Figures 16-21As shown, the mounting tube 200 includes a pressure tube 900, a clamping tube 110 and a top tube 120 connected coaxially, wherein the circumferential outer edge of the pressure tube 900 is sealed with the circumferential inner wall of the plug hole 7031, the pressure tube 900 is plugged into the plug hole 7031, and a clamping protrusion 901 is provided at one end of the pressure tube 900 adjacent to the upper transverse wall 701, and the back plate 600 is clamped between the clamping protrusion 901 and the lower transverse wall 703; the circumferential outer edge of the other end of the pressure tube 900 is threadedly connected with the circumferential inner wall of the clamping tube 110, and the lower transverse wall 703 is clamped between the back plate 600 and the clamping tube 110, and the end of the clamping tube 110 away from the photovoltaic unit 500 is sealed. The seal is plugged into the inner side of the docking port 401 so that the inner cavity of the clamping tube 110 is connected with the inner cavity of the mounting frame 100; the top tube 120 is arranged on the inner side of the pressing tube 900, and the circumferential outer edge of the top tube 120 is in contact with the circumferential inner wall of the pressing tube 900. The photovoltaic unit 500 is clamped between the upper transverse wall 701 and the top tube 120. A supporting protrusion 111 is provided on the circumferential inner wall of the clamping tube 110. The supporting protrusion 111 is annular. The end of the top tube 120 away from the photovoltaic unit 500 is in contact with the supporting protrusion 111. A through hole 121 is also provided on the top tube 120. The tube cavity of the top tube 120 is connected with the heating chamber 800 through the through hole 121.

[0057] After adopting the above structure, when assembling, first insert the pressing tube 900 into the plug hole 7031 of the lower transverse wall 703 of the frame profile 700, so that the pressing protrusion 901 of the pressing tube 900 is located between the upper transverse wall 701 and the lower transverse wall 703, and perform the above operation on the four frame profiles 700 in turn, and surround the four frame profiles 700 on the four sides of the photovoltaic unit 500 and the back plate 600 (at this time, the photovoltaic unit 500 is located directly above the back plate 600), and move the four frame profiles 700 toward the photovoltaic unit. 500 and back plate 600, so that the back plate 600 is located between the pressing protrusion 901 and the lower transverse wall 703, while the photovoltaic unit 500 is located between the pressing protrusion 901 and the upper transverse wall 701; then, after the top tube 120 is passed from bottom to top in the pressing tube 900, the clamping tube 110 is rotated and inserted into the end of the pressing tube 900 away from the photovoltaic unit 500, and the four frame profiles 700 are brought close to each other, so that the four frame profiles 700 are connected end to end in sequence to form a closed frame; then, the clamping tube 110 is rotated so that When the end of the clamping tube 110 abuts against the lower transverse wall 703, it cooperates with the pressing tube 900, and the pressing protrusion 901 on the pressing tube 900 and the clamping tube 110 clamp the lower transverse wall 703 and the back plate 600, so that the back plate 600 is clamped between the pressing protrusion 901 and the lower transverse wall 703; while the clamping tube 110 is rotated, the supporting protrusion 111 on the inner wall of the clamping tube 110 acts on the top tube 120, driving the top tube 120 to move to the upper transverse wall 701, and finally the top tube 120 and the upper transverse wall 701 are mutually connected. In cooperation, the photovoltaic unit 500 is clamped, thus ensuring that the photovoltaic unit 500 and the back panel 600 are firmly installed in the closed frame composed of the four frame profiles 700, ensuring the installation connection strength, the circumferential outer edge of the top tube 120 is in contact with the circumferential inner wall of the pressing tube 900, preventing the top tube 120 from circumferential movement, and through the through hole 121 on the top tube 120, the heating chamber 800 is connected to the inner cavity of the mounting frame 100 through the through hole 121, the tube cavity of the top tube 120, and the tube cavity of the clamping tube 110.

[0058] In the above-mentioned connection structure, by rotating the clamping tube 110, the back panel 600 can be locked on the lower horizontal wall 703 and the photovoltaic unit 500 can be locked on the upper horizontal wall 701 at the same time. The operation is convenient, and the positions of the photovoltaic unit 500 and the back panel 600 can be locked by one component, which reduces the assembly burden of workers and improves construction efficiency. There is no need to use angle codes to connect adjacent frame profiles 700, which reduces the parts used for assembling the frame profiles 700 and reduces costs.

[0059] In order to enhance the sealing and prevent water leakage in the heating chamber 800, an upper sealing strip 140 is fixed on the upper transverse wall 701, and a lower sealing strip 150 is fixed on the lower transverse wall 703. Both the upper sealing strip 140 and the lower sealing strip 150 are EPDM rubber strips, and a second notch 151 is provided on the lower sealing strip 150. The second notch 151 is a semicircular notch, which is arranged opposite to the vertical wall 702 and is adapted to the pressure tube 900. Specifically, the two lower sealing strips 150 corresponding to the two long side profiles are provided with There are three second notches 151, and two second notches 151 are provided on the two lower sealing strips 150 corresponding to the two short side profiles; ten first notches 601 are provided on the circumferential outer edge of the back plate 600, and the ten first notches 601 correspond one-to-one to the second notches 151 on the four lower sealing strips 150. The first notches 601 and the second notches 151 are combined to form a circular sealing port that is compatible with the pressure tube 900, and the circumferential inner wall of the sealing port is sealed and fitted with the circumferential outer edge of the pressure tube 900.

[0060] After adopting the above-mentioned settings, the elastic upper sealing strip 140 is adhered to the glass layer 503 on the front of the photovoltaic unit 500 to ensure the sealed connection between the upper horizontal wall 701 and the photovoltaic unit 500; and the circular sealing opening enclosed by the lower sealing strip 150 and the back panel 600 is sealed by the circumferential inner wall of the sealing opening and the circumferential outer edge of the pressure tube 900 to ensure the sealing of the connection between the pressure tube 900 and the lower horizontal wall 703 and the back panel 600, thereby preventing water in the heating chamber 800 from leaking from the splicing position of the frame profile 700 and the photovoltaic unit 500 and the back panel 600.

[0061] The water inlet 103 is connected to a water inlet valve 160, and the water outlet 104 is connected to a water outlet valve 170. When the photovoltaic power generation device is in use, the water inlet 103 is connected to a water pump, and the water outlet 104 is connected to a water tank. When the water inlet valve 160 is opened, the water pump draws water to be heated through the water inlet 103, the water inlet chamber 101, and the water inlet pipe into the heating chamber 800. The water in the heating chamber 800 absorbs the heat generated by the photovoltaic unit 500, raising its temperature. When the water outlet valve 170 is opened, the heated water is discharged through the water outlet pipe, the water outlet chamber 102, and the water outlet 104 into the water tank for storage. In this manner, cold water is delivered to the heating chamber 800 in batches for heating before being discharged into the water tank for storage and use by users of the building.

[0062] like Figure 5 、 Figure 6 and Figure 15As shown, the back panel 600 includes an integrally connected edge portion 602 and a center portion 603, the edge portion 602 is a frame-shaped plate structure, and the edge portion 602 is located at the circumferential edge of the back panel 600, and the center portion 603 is a rectangular plate structure, and the center portion 603 is located at the center of the back panel 600 and is arranged on the inner side of the edge portion 602; the distance between the center portion 603 and the photovoltaic unit 500 is smaller than the distance between the edge portion 602 and the photovoltaic unit 500, and the center portion 603 is gradually transitioned to the edge portion 602.

[0063] After the back panel 600 is designed in the above shape, the thickness at the center of the heating chamber 800 is smaller than the thickness at the edge, so that the cooling water in the heating chamber 800 can fully contact the glass layer 503 on the back of the photovoltaic unit 500, so as to improve the heat exchange efficiency, increase the heating effect of the water in the heating chamber 800, and make the cooling water heat up quickly, while improving the cooling effect on the photovoltaic unit 500, so as to increase the photovoltaic power generation.

[0064] like Figure 5-10 and Figures 18-21 As shown, the clamping tube 110 is snap-connected with the shell cover 400; specifically, a convex ring 112 coaxial with the circumferential outer edge of the clamping tube 110 is fixed, and a clamping piece is provided on the side of the shell cover 400 facing away from the mounting shell 300, and the clamping piece corresponds to the docking port 401 one by one, and the clamping piece includes four latching teeth 130 evenly distributed along the circumference of the docking port 401, and the latching teeth 130 are snap-fitted with the convex ring 112; the outer diameter of the clamping tube 110 is the same as the inner diameter of the docking port 401, so that after the photovoltaic module is connected to the mounting frame 100 through the mounting tube 200, the circumferential outer edge of the clamping tube 110 is sealed with the circumferential inner wall of the docking port 401.

[0065] After adopting the above structure, when the photovoltaic component is fixedly connected to the mounting frame 100, the two are aligned so that the axis line of the mounting tube 200 fixed on the frame profile 700 coincides with the axis line of the docking port 401. Then, the photovoltaic component is brought close to the mounting frame 100 so that the end of the top tube 120 away from the photovoltaic unit 500 is inserted into the docking port 401. The latching teeth 130 and the convex ring 112 on the clamping tube 110 are engaged with each other. At this time, the convex ring 112 is sealed and clamped in the clamping opening formed by the latching teeth 130 and the shell cover 400, so that the clamping tube 110 cannot be separated from the shell. The cover 400 completes the connection between the photovoltaic module and the mounting frame 100 through the mounting tube 200, which is convenient for splicing and is conducive to improving assembly efficiency. After the photovoltaic module is connected to the mounting frame 100, the position of the docking port 401 on the shell cover 400 is fixed, thereby fixing the positions of the ten mounting tubes 200 connected to the photovoltaic module, and then fixing the relative positions of the four frame profiles 700 in the photovoltaic module, preventing the frame profiles 700 from offsetting, and further strengthening the structural strength of the photovoltaic module while ensuring the sealing of the heating chamber 800.

[0066] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A photovoltaic power generation device integrating light and heat, characterized by: The invention comprises a hollow mounting frame (100) and a photovoltaic assembly arranged on the mounting frame (100) via a mounting tube (200); the inner cavity of the mounting frame (100) comprises a water inlet cavity (101) and a water outlet cavity (102); the mounting frame (100) is provided with a water inlet (103) communicating with the water inlet cavity (101) and a water outlet (104) communicating with the water outlet cavity (102); The photovoltaic assembly comprises a photovoltaic unit (500), a back plate (600) arranged on the back of the photovoltaic unit (500), and frame profiles (700) arranged on four sides of the photovoltaic unit (500) and connected in sequence, wherein the frame profiles (700), the back plate (600) and the photovoltaic unit (500) enclose a heating cavity (800); The installation pipe (200) comprises a water inlet pipe and a water outlet pipe, and the water inlet cavity (101), the lumen of the water inlet pipe, the heating cavity (800), the lumen of the water outlet pipe, and the water outlet cavity (102) are sequentially connected; the cross section of the frame profile (700) is U-shaped, and the frame profile (700) comprises an upper transverse wall (701), a vertical wall (702), and a lower transverse wall (703) connected in sequence; the upper transverse wall (701) and the lower transverse wall (703) are respectively sealedly connected to the photovoltaic unit (500) and the back plate (600); the lower transverse wall (703) is provided with a plug hole (7031), and the installation pipe (200) comprises a pressure pipe (900) plugged into and sealed with the plug hole (7031); the pressure pipe (900) is provided with a pressing protrusion (901) at one end adjacent to the upper transverse wall (701), and the back plate ( The pressure tube (600) is clamped between the pressing protrusion (901) and the lower transverse wall (703), the other end of the pressure tube (900) is threadedly connected to a clamping tube (110), the lower transverse wall (703) is clamped between the back plate (600) and the clamping tube (110), the inner cavity of the clamping tube (110) is communicated with the inner cavity of the mounting frame (100); the pressure tube (900) is provided with a top tube (120) which is sealed therewith. The photovoltaic unit (500) is clamped between the upper transverse wall (701) and the top tube (120), a supporting protrusion (111) is provided on the circumferential inner wall of the clamping tube (110), the top tube (120) abuts against the supporting protrusion (111), a through hole (121) is provided on the top tube (120), and the tube cavity of the top tube (120) is connected to the heating chamber (800) through the through hole (121).

2. The integrated photothermal photovoltaic power generation device according to claim 1, characterized in that: The clamping tube (110) is connected to the mounting frame (100) by snapping.

3. The integrated photothermal photovoltaic power generation device according to claim 2, characterized in that: A convex ring (112) is fixed to the circumferential outer edge of the clamping tube (110), and a latching tooth (130) is provided on the mounting frame (100), and the convex ring (112) is engaged with the latching tooth (130).

4. The integrated photothermal photovoltaic power generation device according to claim 1, characterized in that: A first notch (601) is provided on the circumferential outer edge of the back plate (600), and the first notch (601) is adapted to fit the pressure tube (900).

5. The integrated photothermal photovoltaic power generation device according to claim 4, characterized in that: A lower sealing strip (150) is provided on the lower transverse wall (703), and a second notch (151) is provided on a side of the lower sealing strip (150) adjacent to the back plate (600). The first notch (601) and the second notch (151) are combined to form a sealing opening, and the circumferential inner wall of the sealing opening is in contact with the circumferential outer edge of the pressure tube (900).

6. The integrated photothermal photovoltaic power generation device according to any one of claims 1 to 5, characterized in that: The back plate (600) includes an edge portion (602) arranged at a circumferential outer edge position thereof and a center portion (603) arranged inside the edge portion (602), wherein the distance between the center portion (603) and the photovoltaic unit (500) is smaller than the distance between the edge portion (602) and the photovoltaic unit (500), and the center portion (603) is arranged in a gradual transition toward the edge portion (602).

7. The integrated photothermal photovoltaic power generation device according to any one of claims 1 to 5, characterized in that: The water inlet (103) is connected to a water inlet valve (160), and the water outlet (104) is connected to a water outlet valve (170).

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