Building top pavilion photovoltaic power generation system

Abstract

The utility model provides a building top cabinet photovoltaic power generation system, and the building top cabinet is located at the top end of a building, and comprises a top surface and a vertical surface surrounding the top surface. The building top pavilion photovoltaic power generation system comprises a vertical face frame, a first photovoltaic panel, a top face frame and a second photovoltaic panel. The vertical face frame comprises vertical frames and transverse supports, the vertical frames are installed on the vertical face, each vertical frame is provided with a plurality of transverse supports distributed at intervals in the vertical direction, the first photovoltaic panels are installed on the transverse supports, the top face frame is arranged on the top face in a crossing mode, and the second photovoltaic panels are laid on the top face frame. According to the photovoltaic power generation system for the building top pavilion, the installation areas of the vertical faces and the top face of the building top pavilion can be fully utilized to lay enough photovoltaic panels, and then sufficient illumination resources at the building top pavilion can be effectively utilized.

Description

Technical Field

[0001] The present application relates to the technical field of photovoltaic building integration, and in particular to a building roof photovoltaic power generation system. Background Art

[0002] Building Integrated Photovoltaics (BIPV) is a technology that integrates solar power generation products into buildings. It not only has the function of power generation, but also can be perfectly integrated with the design, structure and function of the building itself, without destroying or weakening the function of the original building, and can even enhance the overall aesthetics and practicality of the building.

[0003] For large office buildings, there is usually a rooftop for power distribution throughout the building. Because it is at the highest point with plenty of sunlight, it is theoretically suitable for installing photovoltaic panels to generate electricity, so as to make full use of the light resources on the top floor of high-rise buildings.

[0004] The existing photovoltaic building integration technology mostly replaces the window glass with photovoltaic glass to build a photovoltaic curtain wall. However, the existing building roofs, especially the roofs of completed high-rise buildings, generally do not install windows, or only install a small number of windows. Therefore, the structure of photovoltaic windows obviously cannot fully utilize the installation area of ​​the roof. Therefore, how to build a photovoltaic power generation system on the roof of a building to fully utilize the lighting resources of the roof has become a relatively urgent technical problem that needs to be solved. Utility Model Content

[0005] The purpose of the present application is to provide a building roof photovoltaic power generation system that can fully utilize the installation area of ​​the facade and top of the building roof to lay enough photovoltaic panels, thereby effectively utilizing the sufficient light resources at the building roof.

[0006] The present application provides a building roof photovoltaic power generation system, the building roof is at the top of a building, the building roof includes a top surface and a facade surrounding the top surface; the building roof photovoltaic power generation system includes a facade frame, a first photovoltaic panel, a top surface frame and a second photovoltaic panel. The facade frame includes a vertical frame and a horizontal bracket, the vertical frame is installed on the facade, each vertical frame is installed with a plurality of horizontal brackets distributed along the vertical interval, the first photovoltaic panel is installed on the horizontal bracket, the top surface frame is arranged across the top surface, and the second photovoltaic panel is laid on the top surface frame.

[0007] In an implementable scheme, a building roof photovoltaic power generation system includes a fixing component; a first photovoltaic panel is located between upper and lower adjacent transverse brackets; among the upper and lower adjacent transverse brackets, a fixing component is installed on the lower surface of the upper transverse bracket for fixing the upper end of the first photovoltaic panel; a fixing component is also installed on the upper surface of the lower transverse bracket for fixing the lower end of the first photovoltaic panel.

[0008] In one feasible solution, all the first photovoltaic panels are in a vertical position and are at the same distance from the facade.

[0009] In an implementable solution, all the first photovoltaic panels are in a vertical posture, and the distance between the first photovoltaic panels and the facade gradually decreases from bottom to top.

[0010] In an implementable scheme, the fixing assembly includes a first L bracket and a second L bracket; the first L bracket includes an A1 connecting segment and an A2 connecting segment connected vertically to each other; the second L bracket includes a B1 connecting segment and a B2 connecting segment connected vertically to each other; the B2 connecting segment of the second L bracket is superimposed on the A2 connecting segment of the first L bracket, the B2 connecting segment and the A2 connecting segment are both fixed to the transverse bracket, and the A1 connecting segment and the B1 connecting segment are spaced to form a vertical gap; the edge of the first photovoltaic panel is clamped in the vertical gap.

[0011] In an implementable solution, a buffer pad is provided at the position where the first photovoltaic panel contacts the inside of the vertical gap.

[0012] In an implementable solution, all the first photovoltaic panels are in an inclined posture, and the inclination angles of all the first photovoltaic panels are consistent.

[0013] In an implementable scheme, the fixing assembly includes a first angle bracket and a second angle bracket; the first angle bracket includes a C1 connecting segment and a C2 connecting segment connected at a preset angle β; the second angle bracket includes a D1 connecting segment and a D2 connecting segment connected at a preset angle β; the D2 connecting segment of the second angle bracket is superimposed on the C2 connecting segment of the first angle bracket, the D2 connecting segment and the C2 connecting segment are both fixed to the transverse bracket, and the C1 connecting segment and the D1 connecting segment are spaced to form an inclined gap; the edge of the first photovoltaic panel is clamped in the inclined gap.

[0014] In an implementable solution, a buffer pad is provided at the position where the first photovoltaic panel contacts the inside of the tilted neutral position.

[0015] In an implementable scheme, the building roof photovoltaic power generation system also includes a telescopic mechanism and a bearing bracket; the lower end of the bearing bracket is hinged to the upper surface of the end of the transverse bracket away from the vertical frame, the telescopic mechanism is located between the bearing bracket and the vertical frame, and the first end of the telescopic mechanism is hinged to the upper surface of the end of the transverse bracket close to the vertical frame, the second end of the telescopic mechanism is hinged to the back side of the bearing bracket, and the first photovoltaic panel is installed on the front side of the bearing bracket.

[0016] In an implementable solution, the first photovoltaic panel is mounted on the supporting bracket via a plurality of edge fixing members, and the plurality of edge fixing members allow a predetermined gap to exist between the first photovoltaic panel and the front face of the supporting bracket.

[0017] In an implementable solution, the angle between the first photovoltaic panel and the transverse support ranges from 45° to 90°.

[0018] In an implementable solution, the building roof photovoltaic power generation system also includes a solar tracking sensor and a main control device. The solar tracking sensor is installed on the top surface; the main control device is communicatively connected with the solar tracking sensor and the telescopic mechanism.

[0019] In an implementable solution, the building roof photovoltaic power generation system also includes a posture angle sensor that is communicatively connected to the main control device and is installed on a supporting bracket; the main control device obtains the posture angle of the first photovoltaic panel through the posture angle sensor.

[0020] In an implementable solution, the top surface frame includes multiple purlins and multiple clamps, the multiple purlins are arranged in parallel and spaced apart, and the two ends of the purlins are respectively fixed in the walls on both sides of the top surface; the second photovoltaic panel is laid on the purlins and fixed by multiple clamps.

[0021] Compared with the prior art, the beneficial effects of this application include at least:

[0022] The building roof photovoltaic power generation system provided by the present application is to install a facade frame on the facade of the building roof, so as to facilitate the laying of the first photovoltaic panel covering the facade. The top frame is installed on the top surface of the building roof, so as to facilitate the laying of the second photovoltaic panel covering the top surface. It can be seen that the building roof photovoltaic power generation system of the present application can make full use of the facade and top surface installation area of ​​the building roof to lay enough photovoltaic panels, and then effectively utilize the sufficient light resources at the building roof. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A side structural diagram of a building roof photovoltaic power generation system shown in an embodiment of the present application.

[0025] Figure 2 This is a structural diagram of the embodiment of the present application when the distances between each photovoltaic panel installed on the facade and the facade are different.

[0026] Figure 3 for Figure 1 A magnified view of the local structure at point A.

[0027] Figure 4 for Figure 1 A magnified view of the local structure at point B in the middle.

[0028] Figure 5 for Figure 4 Structural diagram of the fixed components in .

[0029] Figure 6 This is a structural diagram of each photovoltaic panel installed on the facade in an embodiment of the present application when it is in an inclined posture.

[0030] Figure 7 for Figure 6 Enlarged view of the local structure at point C in the middle.

[0031] Figure 8 for Figure 6 Enlarged view of the local structure at point D in the middle.

[0032] Fig. 9 for Figure 8 Structural diagram of the fixed components in .

[0033] Fig.10 This is a structural diagram of an embodiment of the present application in which the tilt angle of each photovoltaic panel installed on the facade is adjustable.

[0034] Fig.11 for Fig.10 Enlarged view of the local structure at point E in the middle.

[0035] Fig.12 This is a schematic diagram of a building roof photovoltaic power generation system with light chasing control according to an embodiment of the present application.

[0036] Fig.13 This is a top view of the photovoltaic panel installed on the top surface of the embodiment of the present application.

[0037] In the figure:

[0038] 1. Facade frame; 11. Vertical frame; 12. Horizontal bracket; 2. First photovoltaic panel; 3. Top frame; 31. Purlin; 32. Clamp; 4. Second photovoltaic panel; 5. Fixing assembly; 51. First L bracket; 511. A1 connecting section; 512. A2 connecting section; 52. Second L bracket; 521. B1 connecting section; 522. B2 connecting section; 53. Vertical gap; 54. First angle bracket; 541. C1 connecting section; 542. C2 connecting section; 55. Second angle bracket; 551. D1 connecting section; 552. D2 connecting section; 56. Inclined gap; 57. Buffer pad; 6. Telescopic mechanism; 7. Load-bearing bracket; 71. Edge fixing piece; 8. Sun tracking sensor; 9. Main control device; 100. Building roof; 101. Top surface; 102. Facade. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0041] like Figure 1 As shown, the embodiment of the present application provides a building roof photovoltaic power generation system, the building roof 100 is located at the top of a building, and the building roof 100 includes a top surface 101 and a facade 102 surrounding the top surface 101.

[0042] The building roof photovoltaic power generation system includes a facade frame 1, a first photovoltaic panel 2, a top frame 3 and a second photovoltaic panel 4. The facade frame 1 includes a vertical frame 11 and a horizontal bracket 12. The vertical frame 11 is installed on the facade 102. Each vertical frame 11 is installed with a plurality of horizontal brackets 12 distributed along the vertical interval. The first photovoltaic panel 2 is installed on the horizontal bracket 12. The top frame 3 is arranged across the top surface 101, and the second photovoltaic panel 4 is laid on the top frame 3.

[0043] The building roof photovoltaic power generation system provided in this embodiment is convenient for laying the first photovoltaic panel 2 covering the facade 102 by installing the facade frame 1 on the facade 102 of the building roof 100. The top frame 3 is installed on the top surface 101 of the building roof 100 to facilitate laying the second photovoltaic panel 4 covering the top surface 101. It can be seen that the building roof photovoltaic power generation system of this embodiment can make full use of the installation area of ​​the facade and top surface of the building roof 100 to lay enough photovoltaic panels, and then effectively use the sufficient light resources at the building roof.

[0044] In one embodiment, if Figure 3 and Figure 7 As shown, the building roof photovoltaic power generation system may include a fixing component 5. The first photovoltaic panel 2 is located between the upper and lower adjacent transverse brackets 12. Among the upper and lower adjacent transverse brackets 12, a fixing component 5 is installed on the lower surface of the upper transverse bracket 12 for fixing the upper end of the first photovoltaic panel 2; a fixing component 5 is also installed on the upper surface of the lower transverse bracket 12 for fixing the lower end of the first photovoltaic panel 2.

[0045] In one embodiment, if Figure 1 As shown, all the first photovoltaic panels 2 can be in a vertical posture and have the same distance from the facade 102 , that is, all the first photovoltaic panels 2 form an integral vertical plane on the facade of the building roof 100 , which can fully utilize the light resources and beautify the facade 102 of the building roof 100 .

[0046] In one embodiment, if Figure 2 As shown, all first photovoltaic panels 2 can be in a vertical posture, and in a sequence from bottom to top, the distance between the first photovoltaic panels 2 and the facade 102 gradually decreases, which can not only improve the light utilization rate, but also reduce the amount of transverse brackets 12, thereby reducing the overall weight of the facade frame 1 and improving safety.

[0047] In one embodiment, if Figure 3 , Figure 4 and Figure 5 As shown, the fixing assembly 5 may include a first L bracket 51 and a second L bracket 52. The first L bracket 51 includes an A1 connecting segment 511 and an A2 connecting segment 512 connected vertically to each other, and the second L bracket 52 includes a B1 connecting segment 521 and a B2 connecting segment 522 connected vertically to each other. The B2 connecting segment 522 of the second L bracket 52 is superimposed on the A2 connecting segment 512 of the first L bracket 51, and the B2 connecting segment 522 and the A2 connecting segment 512 are both fixed to the transverse bracket 12, and the A1 connecting segment 511 and the B1 connecting segment 521 are spaced to form a vertical gap 53. The edge of the first photovoltaic panel 2 is clamped in the vertical gap 53.

[0048] Figures 3 to 5The fixing assembly 5 shown in the figure facilitates the vertical installation of the first photovoltaic panel 2 .

[0049] In addition, in one embodiment, if Figure 4 As shown, a buffer pad 57 may be provided at the position where the first photovoltaic panel 2 contacts the inside of the vertical gap 53 to prevent the fixing assembly 5 from damaging the first photovoltaic panel 2 .

[0050] In one embodiment, if Figure 6 As shown, all first photovoltaic panels 2 can be inclined, and the surfaces of all first photovoltaic panels 2 have the same inclination angle, and preferably all first photovoltaic panels 2 are coplanar. This structural setting can make the first photovoltaic panels 2 better receive light, which helps to increase the illumination time and improve the power generation efficiency.

[0051] In one embodiment, if Figure 7 , Figure 8 and Fig. 9 As shown, the fixing assembly 5 may include a first angle bracket 54 and a second angle bracket 55. The first angle bracket 54 includes a C1 connecting segment 541 and a C2 connecting segment 542 connected at a preset angle β, and the second angle bracket 55 includes a D1 connecting segment 551 and a D2 connecting segment 552 connected at a preset angle β. The D2 connecting segment 552 of the second angle bracket 55 is superimposed on the C2 connecting segment 542 of the first angle bracket 54, and the D2 connecting segment 552 and the C2 connecting segment 542 are both fixed to the transverse bracket 12, and the C1 connecting segment 541 and the D1 connecting segment 551 are spaced to form an inclined gap 56. The edge of the first photovoltaic panel 2 is clamped in the inclined gap 56.

[0052] Figures 7 to 9 The fixing assembly 5 shown in the figure facilitates the installation of the first photovoltaic panel 2 in an inclined posture.

[0053] In addition, in one embodiment, if Figure 8 As shown, a buffer pad 57 may also be provided at the position where the first photovoltaic panel 2 contacts the inside of the inclined gap 56 to prevent the fixing assembly 5 from damaging the first photovoltaic panel 2 .

[0054] In one embodiment, if Fig.10 and Fig.11 As shown, the first photovoltaic panel 2 can be arranged in a form with an adjustable angle, so that the first photovoltaic panel 2 laid on the facade can receive light better.

[0055] Specifically, the building roof photovoltaic power generation system may further include a telescopic mechanism 6 and a bearing bracket 7. The lower end of the bearing bracket 7 is hinged to the upper surface of the end of the lateral bracket 12 away from the vertical frame 11, the telescopic mechanism 6 is between the bearing bracket 7 and the vertical frame 11, and the first end of the telescopic mechanism 6 is hinged to the upper surface of the end of the lateral bracket 12 close to the vertical frame 11, and the second end of the telescopic mechanism 6 is hinged to the back side of the bearing bracket 7, and the first photovoltaic panel 2 is installed on the front of the bearing bracket 7.

[0056] In this way, when the sun's position changes, the angle of the first photovoltaic panel 2 can be adjusted through the telescopic mechanism 6 to better receive sunlight, thereby achieving longer and more efficient power generation operations.

[0057] In one embodiment, if Fig.11 As shown, the first photovoltaic panel 2 can be installed on the supporting bracket 7 by means of a plurality of edge fixings 71. The plurality of edge fixings 71 allow a predetermined gap to exist between the first photovoltaic panel 2 and the front side of the supporting bracket 7, which is beneficial to the heat dissipation of the first photovoltaic panel 2 to alleviate the decrease in power generation efficiency caused by excessive temperature.

[0058] In one embodiment, if Fig.11 As shown, the telescopic mechanism 6 drives the angle of the supporting bracket 7 to change, so that the included angle α between the first photovoltaic panel 2 and the transverse bracket 12 can change within a range of 45° to 90°.

[0059] In one embodiment, if Fig.12 As shown, the building roof photovoltaic power generation system may further include a sun tracking sensor 8 and a main control device 9. The sun tracking sensor 8 is installed on the top surface 101. The main control device 9 is connected to the sun tracking sensor 8 and the telescopic mechanism 6 in communication.

[0060] Specifically, the main control device 9 obtains the sun's position through the sun tracking sensor 8, calculates the optimal posture angle of the first photovoltaic panel 2, and compares it with the current posture angle of the first photovoltaic panel 2 to obtain the posture angle adjustment amount of the first photovoltaic panel 2; the main control device 9 sends the posture angle adjustment amount and a corresponding signal to the telescopic mechanism 6 to activate the telescopic mechanism 6 to adjust the current posture angle of the first photovoltaic panel 2 to the optimal posture angle, so as to better receive sunlight and improve power generation efficiency.

[0061] It can be seen that the addition of the solar tracking sensor 8 and the main control device 9 can realize the flexible tracking and timely adjustment of each first photovoltaic panel 2 with the angle of the sun, so that the first photovoltaic panel 2 always remains at the optimal angle, maximizes the reception of sunlight, and improves the overall power generation efficiency of the photovoltaic system.

[0062] It should be noted that the main control device 9 can obtain the sun's position in real time through the sun tracking sensor 8, and adjust the telescopic mechanism 6 in real time to achieve real-time adjustment of the angle of the first photovoltaic panel 2. Alternatively, the main control device 9 can obtain the sun's position through the sun tracking sensor 8 at predetermined time intervals (for example, 30 minutes, 1 hour, or 2 hours), and adjust the telescopic mechanism 6 at intervals to achieve periodic adjustment of the angle of the first photovoltaic panel 2.

[0063] In one embodiment, the building roof photovoltaic power generation system may further include a posture angle sensor (not shown in the figure) that is communicatively connected to the main control device 9 and is installed on the supporting bracket 7; the main control device 9 obtains the posture angle of the first photovoltaic panel 2 through the posture angle sensor.

[0064] In one embodiment, if Fig.13 As shown, the top frame 3 may include a plurality of purlins 31 and a plurality of clamps 32, wherein the plurality of purlins 31 are arranged in parallel and spaced apart, and the two ends of the purlins 31 are respectively fixed in the walls on both sides of the top surface 101; the second photovoltaic panel 4 is laid on the purlins 31 and fixed by a plurality of clamps 32, thereby making full use of the space on the top surface for power generation.

[0065] The above description is only a partial embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A building roof photovoltaic power generation system, wherein the building roof is located at the top of a building, and the building roof comprises a top surface (101) and a facade (102) surrounding the top surface (101); characterized in that: The building roof photovoltaic power generation system includes: A facade frame (1), comprising a vertical frame (11) and a transverse bracket (12), wherein the vertical frame (11) is installed on the facade (102), and each of the vertical frames (11) is installed with a plurality of transverse brackets (12) distributed at intervals along the vertical direction; A first photovoltaic panel (2) mounted on the transverse support (12); A top surface frame (3) is disposed across the top surface (101); A second photovoltaic panel (4) is laid on the top surface frame (3); The top surface frame (3) comprises a plurality of purlins (31) and a plurality of clamps (32); the plurality of purlins (31) are arranged in parallel and spaced apart, and two ends of the purlins (31) are respectively fixed to the walls on both sides of the top surface (101); the second photovoltaic panel (4) is laid on the purlins (31) and fixed by means of the plurality of clamps (32).

2. The building roof photovoltaic power generation system according to claim 1, characterized in that: It comprises a fixing assembly (5); the first photovoltaic panel (2) is located between the upper and lower adjacent transverse brackets (12); Among the upper and lower adjacent transverse brackets (12), a fixing component (5) is installed on the lower surface of the transverse bracket (12) located at the top, for fixing the upper end of the first photovoltaic panel (2); and a fixing component (5) is also installed on the upper surface of the transverse bracket (12) located at the bottom, for fixing the lower end of the first photovoltaic panel (2).

3. The building roof photovoltaic power generation system according to claim 2, characterized in that: All of the first photovoltaic panels (2) are in a vertical position and are at the same distance from the facade (102).

4. The building roof photovoltaic power generation system according to claim 2, characterized in that: All of the first photovoltaic panels (2) are in a vertical position, and in order from bottom to top, the distance between the first photovoltaic panels (2) and the facade (102) gradually decreases.

5. The building roof photovoltaic power generation system according to claim 3 or 4, characterized in that: The fixing assembly (5) comprises a first L-shaped bracket (51) and a second L-shaped bracket (52); The first L-shaped bracket (51) comprises an A1 connecting section (511) and an A2 connecting section (512) which are vertically connected to each other; The second L-shaped bracket (52) comprises a B1 connecting section (521) and a B2 connecting section (522) which are vertically connected to each other; The B2 connecting section (522) of the second L-shaped bracket (52) is stacked on the A2 connecting section (512) of the first L-shaped bracket (51), the B2 connecting section (522) and the A2 connecting section (512) are both fixed to the transverse bracket (12), and the A1 connecting section (511) and the B1 connecting section (521) are spaced apart to form a vertical gap (53); The edge of the first photovoltaic panel (2) is clamped in the vertical gap (53).

6. The building roof photovoltaic power generation system according to claim 5, characterized in that: A buffer pad (57) is provided at a position where the first photovoltaic panel (2) contacts the interior of the vertical space (53).

7. The building roof photovoltaic power generation system according to claim 2, characterized in that: All of the first photovoltaic panels (2) are in an inclined posture, and the inclination angles of all of the first photovoltaic panels (2) are consistent.

8. The building roof photovoltaic power generation system according to claim 7, characterized in that: The fixing assembly (5) comprises a first angle bracket (54) and a second angle bracket (55); The first angle bracket (54) comprises a C1 connecting segment (541) and a C2 connecting segment (542) connected at a preset angle β; The second angle bracket (55) comprises a D1 connecting section (551) and a D2 connecting section (552) connected at a preset angle β; The D2 connecting section (552) of the second corner bracket (55) is superimposed on the C2 connecting section (542) of the first corner bracket (54), the D2 connecting section (552) and the C2 connecting section (542) are both fixed to the transverse bracket (12), and the C1 connecting section (541) and the D1 connecting section (551) are spaced apart to form an inclined gap (56); The edge of the first photovoltaic panel (2) is clamped in the inclined gap (56).

9. The building roof photovoltaic power generation system according to claim 8, characterized in that: A buffer pad (57) is provided at a position where the first photovoltaic panel (2) contacts the inside of the inclined gap (56).

10. The building roof photovoltaic power generation system according to claim 8, characterized in that: It also includes a telescopic mechanism (6) and a bearing bracket (7); The lower end of the bearing bracket (7) is hinged to the upper surface of one end of the transverse bracket (12) away from the vertical frame (11); the telescopic mechanism (6) is located between the bearing bracket (7) and the vertical frame (11); the first end of the telescopic mechanism (6) is hinged to the upper surface of one end of the transverse bracket (12) close to the vertical frame (11); the second end of the telescopic mechanism (6) is hinged to the back side of the bearing bracket (7); and the first photovoltaic panel (2) is mounted on the front side of the bearing bracket (7).

11. The building roof photovoltaic power generation system according to claim 10, characterized in that: The first photovoltaic panel (2) is mounted on the supporting bracket (7) via a plurality of edge fixing members (71), and the plurality of edge fixing members (71) allow a predetermined gap to exist between the first photovoltaic panel (2) and the front face of the supporting bracket (7).

12. The building roof photovoltaic power generation system according to claim 10, characterized in that: The included angle between the first photovoltaic panel (2) and the transverse support (12) varies in the range of 45° to 90°.

13. The building roof photovoltaic power generation system according to claim 10, characterized in that: It also includes a sun tracking sensor (8) and a main control device (9), wherein the sun tracking sensor (8) is installed on the top surface (101); The main control device (9) is communicatively connected with the sun tracking sensor (8) and the telescopic mechanism (6).

14. The building roof photovoltaic power generation system according to claim 13, characterized in that: It also comprises a posture angle sensor which is communicatively connected to the main control device (9) and is mounted on the supporting bracket (7); the main control device (9) obtains the posture angle of the first photovoltaic panel (2) through the posture angle sensor.

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