A rooftop power generation system based on double-sided solar photovoltaic panels

Abstract

The invention relates to the technical field of solar photovoltaic panel design, and discloses a roof power generation system based on double-sided solar photovoltaic panels, comprising a plurality of double-sided solar photovoltaic panels inclined on a roof, a support assembly fixed on the roof and used to support the panel bodies, the support assembly comprising two support arms which are respectively arranged at two ends of the roof and are in an inverted V-shape for use with the roof, a plurality of short columns which are arranged on the support arms and respectively correspond to the lower end positions of the plurality of inclined panel bodies, a plurality of long columns which are arranged on the support arms and respectively correspond to the upper end positions of the plurality of inclined panel bodies, a plurality of first cross bars which are arranged between the support arms on both sides and respectively connected to the upper ends of the short columns at both ends, a plurality of second cross bars which are arranged between the support arms on both sides and respectively connected to the upper ends of the long columns at both ends, and a stainless steel mirror panel which is parallel to the roof is arranged below the panel bodies.

Description

Technical Field

[0001] The present invention relates to the technical field of solar photovoltaic panel design, and in particular to a rooftop power generation system based on double-sided solar photovoltaic panels. Background Art

[0002] Working principle of solar photovoltaic panels: The current generated by sunlight shining on the solar cell panels charges the battery through the inverter controller. The battery electricity is converted into DC or AC through the inverter controller for use by electrical appliances (loads), or directly input into the grid through the grid-connected inverter.

[0003] Double-sided monocrystalline solar photovoltaic panels use monocrystalline silicon solar cells on both sides of the design. Monocrystalline silicon solar cells are solar cells made of high-purity monocrystalline silicon rods and are currently the fastest-developed type of solar cells.

[0004] At present, a Chinese patent with publication number CN210607290U and publication date May 22, 2020 discloses a photovoltaic solar double-sided double-glass module, including a front glass layer, a double-sided battery cell and a back glass layer arranged from top to bottom, an encapsulation film layer is arranged between the front glass layer and the double-sided battery cell, an encapsulation film layer is arranged between the double-sided battery cell and the back glass layer, and a junction box is arranged on the side of the air surface of the back glass layer.

[0005] Therefore, the double-sided solar photovoltaic panel includes an aluminum alloy frame, a double-sided cell in the middle, a film layer on both sides of the double-sided cell, and a glass layer on the side of the film layer away from the double-sided cell.

[0006] When installing double-sided solar photovoltaic panels on the roof, the solar photovoltaic panels often need to form an angle with the roof so that the light diffusely reflected by the roof can shine on the back of the solar photovoltaic panels. However, the reflectivity of the roof to light is relatively low. If the reflection efficiency of the mirror silver material is 95%, the reflection efficiency of the roof can only reach about 10%, which will result in low effective use efficiency of the back of the solar photovoltaic panel. Summary of the invention

[0007] The purpose of the present invention is to provide a roof power generation system based on double-sided solar photovoltaic panels, which can increase the light reflected to the back of the solar photovoltaic panels, thereby improving the effective use efficiency of the back of the double-sided solar photovoltaic panels.

[0008] The above technical object of the present invention is achieved through the following technical solutions: A roof power generation system based on double-sided solar photovoltaic panels, including the plate bodies of multiple double-sided solar photovoltaic panels inclined on the roof, and a support assembly fixed on the roof and used to support the plate bodies. The support assembly includes two support arms respectively arranged at both ends of the roof and in an inverted V shape matching the roof, multiple short columns arranged on the support arms and corresponding to the lower ends of the multiple inclined plate bodies respectively, multiple long columns arranged on the support arms and corresponding to the upper ends of the multiple inclined plate bodies respectively, multiple first cross bars arranged between the two support arms on both sides and with both ends respectively connected to the upper ends of the short columns, multiple second cross bars arranged between the two support arms on both sides and with both ends respectively connected to the upper ends of the long columns. A stainless steel mirror panel parallel to the roof is arranged below the plate body. The cross section of the first cross bar is a right trapezoid with the inclined surface facing upwards. At the position of the middle of the plate body on the first cross bar, there is a right-angle block clamped between the plate body and the stainless steel mirror panel. The hypotenuse of the cross section of the right-angle block is for the lower end of the plate body to fit, and the right-angle side of the cross section is for the stainless steel mirror panel to fit. One side of the right-angle block is provided with a buckle for the upper side of the first cross bar to be embedded and used in cooperation with the first cross bar. One end of the buckle away from the right-angle block is provided with a mounting shaft with an extending direction parallel to the extending direction of the first cross bar. Both ends of the mounting shaft are provided with pressing arms with one end hinged to the end of the mounting shaft and the other end used to press on the plate body. Waist-shaped holes with an extending direction parallel to the extending direction of the pressing arms are opened on the pressing arms. Threaded holes corresponding to the positions of the waist-shaped holes are opened on the inclined surface of the upper side of the first cross bar. A pressing bolt is arranged on the first cross bar and passes through the waist-shaped hole and is threadedly connected in the threaded hole. A locking member is arranged between the stainless steel mirror panel and the first cross bar and is used to lock the end of the stainless steel mirror panel on the first cross bar. A clamping member for clamping the upper end of the plate body is also arranged on the second cross bar.

[0009] The further setting of the present invention is: The locking member includes a mounting buckle in a "U" shape arranged at the end of the stainless steel mirror panel and for the lower side of the first cross bar to be embedded, a cavity part opened on the lower side of the first cross bar and communicated with the threaded hole, a locking rod arranged in the cavity part and with one end hinged to the lower side of the cavity part and the other end for the pressing bolt to abut against, and a locking cam arranged at the hinged end of the locking rod and used to rotate towards the outside of the cavity part and abut against the inner wall of the mounting buckle.

[0010] The further setting of the present invention is: The locking member further includes a rubber locking ball arranged at the end of the locking rod away from the locking cam and used to abut against the inner wall of the mounting buckle.

[0011] The further setting of the present invention is: The locking member further includes a return spring with the upper end connected to the upper inner wall of the cavity part and the lower end connected to the middle of the locking rod. The elastic restoring force of the return spring drives the locking rod to swing upwards.

[0012] The present invention is further configured as follows: a rubber pad for pressing against the side wall of the plate body is provided at one end of the clamping arm away from the mounting shaft.

[0013] The present invention is further configured as follows: a cross-sectional shape of the second cross bar is the same as a cross-sectional shape of the first cross bar.

[0014] The present invention is further configured as follows: the clamping component includes an externally threaded column arranged on the second cross bar and located between two adjacent plate bodies, a connecting sleeve sleeved on the externally threaded column, pressure plates arranged on both sides of the connecting sleeve and used to abut against the side walls of the plate body, and a locking nut threadedly connected to the externally threaded column and used to tighten against the connecting sleeve.

[0015] The present invention is further configured as follows: a fixing column extending downward is disposed on the second cross bar, and a through hole for the fixing column to pass through is provided on the stainless steel mirror plate.

[0016] The present invention is further configured as follows: the support arm is provided with a plurality of hooks for fixing to the roof, the lower end of the hook is provided with a fixing plate for fixing to the concrete surface of the roof, and the upper end of the hook is provided with a support platform for the support arm to be connected by bolts.

[0017] In summary, the present invention has the following beneficial effects:

[0018] 1. The support arm in an inverted V shape can be used to support the roof, and then the short column is used to support the first cross bar, and the long column is used to support the second cross bar; the right-angle block is embedded in the upper side of the first cross bar by a buckle, and then the lower end of the plate body can be supported on the cross-sectional oblique side of the right-angle block, and then the clamping bolt is passed through the waist hole and threaded into the threaded hole on the first cross bar. At this time, the clamping bolt can drive the clamping arm to rotate toward one side of the plate body, so that the clamping arm presses the plate body on the right-angle block, thereby completing the stable clamping of the lower end of the plate body on the first cross bar; at the same time, the upper end of the plate body is clamped on the second cross bar by a clamping piece, thereby completing the inclined connection between the first cross bar and the second cross bar;

[0019] A stainless steel mirror panel parallel to the roof is arranged below the panel body, and the stainless steel mirror panel is locked on the first cross bar by a locking member, thereby completing the connection of the stainless steel mirror panel on the first cross bar. At this time, the high reflection efficiency of the stainless steel mirror panel can be used to efficiently reflect the light irradiated on the roof to the back of the panel body, thereby finally improving the effective use efficiency of the back of the double-sided solar photovoltaic panel;

[0020] 2. The stainless steel mirror panel is embedded in the lower side of the first cross bar by using the mounting buckle at the end thereof, and while tightening the clamping bolt, the clamping bolt moves toward the threaded hole and then moves into the cavity portion at the lower side of the first cross bar, and then the lower end of the clamping bolt can abut against the locking rod and drive the locking rod to swing downward, at this time, after the locking cam at the hinged end of the locking rod rotates, one end of the locking cam can protrude from the cavity portion and abut against the inner wall of the mounting buckle, and the connection between the stainless steel mirror panel and the first cross bar is completed by the locking between the locking cam and the mounting buckle;

[0021] At this time, after the tightening of the clamping bolts is completed, the connection between the end of the stainless steel mirror panel and the first cross bar can be completed at the same time, which can eventually help to quickly complete the installation of the stainless steel mirror panel and the plate body on the roof;

[0022] 3. When the locking rod is swung downward under the drive of the clamping bolt, as the locking cam and the mounting buckle are pressed against each other, the rubber locking ball at the end of the locking rod away from the locking cam will also press against the inner wall of the mounting buckle. At this time, the inner walls on both sides of the mounting buckle can be locked simultaneously by the locking cam and the rubber locking ball, which is conducive to the stable connection between the end of the stainless steel mirror panel and the first cross bar.

[0023] 4. After the clamping bolt is loosened, the clamping bolt moves toward the side away from the locking rod. At this time, since the upper end of the reset spring is connected to the upper inner wall of the cavity and the lower end is connected to the middle of the locking rod, the elastic restoring force of the reset spring can drive the locking rod to swing upward, thereby canceling the locking effect of the locking cam and the rubber locking ball on the inner wall of the mounting buckle, and finally the stainless steel mirror panel can be disassembled while the plate body is disassembled;

[0024] 5. The rubber pad provided at the end of the clamping arm away from the mounting shaft can be used to press against the side wall of the plate body. Since the rubber pad itself has a large friction coefficient, the friction between the rubber pad and the plate body can be increased, which is ultimately conducive to the stable clamping of the plate body on the first crossbar. At the same time, since the rubber pad itself is relatively soft, the possibility of the side wall of the plate body being crushed can also be reduced;

[0025] 6. The cross-sectional shape of the second crossbar is the same as that of the first crossbar, so that the board can be stably tilted and placed between the first crossbar and the second crossbar;

[0026] 7. After the upper end of the plate body is butted against the second crossbar, the connecting sleeve is set on the external thread column on the second crossbar, and the pressure plate on the connecting sleeve can be butted against the side wall of the plate body. Then, the locking nut is threadedly connected to the external thread column so that the locking nut is pressed against the connecting sleeve. Finally, the pressure plate can be pressed against the plate body so that the plate body is pressed against the second crossbar, completing the stable clamping of the upper end of the plate body on the second crossbar;

[0027] 8. After one end of the stainless steel mirror panel is locked on the first crossbar by means of the mounting buckle, the fixing column on the second crossbar is passed through the through hole on the stainless steel mirror panel to further limit the position of the stainless steel mirror panel to prevent the stainless steel mirror panel from being blown away in strong winds;

[0028] 9. After opening the roof tiles, you can fit the fixing plate of the hook on the surface of the roof concrete. At this time, you can use the expansion screws to fix the fixing plate on the roof concrete, and then cover the roof tiles. The support platform at the upper end of the hook can be used for the support arm to be connected by bolts, which will ultimately help ensure the stable connection of the support arm on the roof without damaging the roof tile structure of the roof, avoiding roof leakage caused by damage to the roof tiles. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the structure of the present invention;

[0030] Figure 2 It is an enlarged view of the local structure of the present invention;

[0031] Figure 3 It is an enlarged view of the connection relationship between the right-angle block, the buckle, the mounting shaft, the clamping arm, and the clamping bolt in the present invention;

[0032] Figure 4 It is a partial cross-sectional view of the connection relationship between the plate body, the right-angle block, the buckle, the mounting shaft, the clamping arm, the clamping bolt, the stainless steel mirror plate and the locking member in the present invention;

[0033] Figure 5 It is a partial stereoscopic diagram of the connection relationship between the locking cam and the locking rod in the present invention;

[0034] Figure 6 It is a partial enlarged view of the connection relationship between the plate body, the second cross bar and the clamping member in the present invention.

[0035] 1. Plate body; 2. Support assembly; 21. Support arm; 22. Short column; 23. Long column; 24. First cross bar; 241. Threaded hole; 242. Clamping bolt; 25. Second cross bar; 251. Fixed column; 3. Stainless steel mirror panel; 31. Through hole; 4. Right-angle block; 41. Buckle; 42. Mounting shaft; 43. Clamping arm; 431. Waist hole; 432. Rubber pad; 5. Locking piece; 51. Mounting buckle; 52. Cavity; 53. Locking rod; 54. Locking cam; 55. Rubber locking ball; 56. Reset spring; 6. Connecting piece; 61. Externally threaded column; 62. Connecting sleeve; 63. Pressing plate; 64. Locking nut; 7. Hook; 71. Fixed plate; 72. Support platform. DETAILED DESCRIPTION

[0036] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0037] A rooftop power generation system based on double-sided solar photovoltaic panels, referring to Figure 1 The roof power generation system based on double-sided solar photovoltaic panels includes a panel body 1 and a support assembly 2. The panel body 1 is a double-sided solar photovoltaic panel. Multiple panels 1 are arranged on the entire roof. In order for the back of the panel body 1 to receive the reflected light from the roof, the panel body 1 is in an inclined state on the roof. The support assembly 2 is used to be fixed on the roof and provide support for multiple panels 1.

[0038] Reference Figure 1 , Figure 2 The support assembly 2 includes a support arm 21, a short column 22, a long column 23, a first cross bar 24, and a second cross bar 25, wherein two support arms 21 are provided and are respectively arranged at both ends of the roof, and the support arm 21 is in an inverted V shape for use with the roof, and a plurality of hooks 7 for fixing to the roof are provided on the support arm 21, and the plurality of hooks 7 are evenly spaced along the extension direction of the support arm 21, wherein a fixing plate 71 for fixing to the concrete surface of the roof by expansion screws is welded to the lower end of the hook 7, and a support platform 72 is integrally provided at the upper end of the hook 7, and the support platform 72 can be connected to the support arm 21 by bolts.

[0039] Reference Figure 1 , Figure 2 , multiple short columns 22 are provided on the support arm 21 and are evenly spaced along the extension direction of the support arm 21, and the lower ends of the short columns 22 are welded to the support arm 21, wherein the short columns 22 can correspond to the lower end position of the inclined plate body 1; at the same time, multiple long columns 23 are also provided on the support arm 21 and are evenly spaced along the extension direction of the support arm 21, and the lower ends of the long columns 23 are welded to the support arm 21, wherein the long columns 23 can correspond to the upper end position of the inclined plate body 1; at the same time, multiple first cross bars 24 are provided on the support arm 21, and the two ends of the first cross bar 24 are respectively welded to the upper ends of the short columns 22 on the support arms 21 on both sides, and the cross-section of the first cross bar 24 is a right-angled trapezoid with the inclined surface facing upward; multiple second cross bars 25 are also provided on the support arm 21, and the two ends of the second cross bar 25 are respectively welded to the upper ends of the long columns 23 on the support arms 21 on both sides, and the cross-sectional shape of the second cross bar 25 is the same as the cross-sectional shape of the first cross bar 24.

[0040] Reference Figure 2 , Figure 3 , Figure 4A stainless steel mirror panel 3 parallel to the roof is arranged below the plate body 1, and the stainless steel mirror panel 3 is also called a mirror panel. The stainless steel plate surface is polished with abrasive liquid through a polishing device to make the plate surface as clear as a mirror, so the stainless steel mirror panel 3 has a very high light reflection efficiency; wherein a right-angle block 4 is arranged on the first cross bar 24 and located at the middle of the plate body 1, the right-angle block 4 is clamped between the plate body 1 and the stainless steel mirror panel 3, and the cross-sectional hypotenuse of the right-angle block 4 is for the lower end of the plate body 1 to fit, and the cross-sectional right-angle side is for the stainless steel mirror panel 3 to fit, and at the same time, a buckle 41 is welded on one side of the right-angle block 4, and the buckle 41 can be embedded in the upper side of the first cross bar 24 and used in conjunction with the first cross bar 24.

[0041] Reference Figure 2 , Figure 3 , Figure 4 , the end of the buckle 41 away from the right-angle block 4 is welded with a mounting shaft 42, and the extension direction of the mounting shaft 42 is parallel to the extension direction of the first cross bar 24; wherein both ends of the mounting shaft 42 are provided with clamping arms 43, and one end of the clamping arm 43 is hinged on the end of the mounting shaft 42 and the other end is bonded with a rubber pad 432, and the rubber pad 432 can be used to clamp on the side wall of the plate body 1; at the same time, the clamping arm 43 is also provided with a waist-shaped hole 431 whose extension direction is parallel to the extension direction of the clamping arm 43, and a threaded hole 241 corresponding to the position of the waist-shaped hole 431 is provided on the inclined surface on the upper side of the first cross bar 24, wherein the first cross bar 24 is provided with a clamping bolt 242 that passes through the waist-shaped hole 431 and is threadedly connected to the threaded hole 241, and the clamping bolt 242 itself has a rubber gasket.

[0042] Reference Figure 2 , Figure 3 , Figure 4 , Figure 5, a locking member 5 is also provided between the stainless - steel mirror panel 3 and the first cross - bar 24. The locking member 5 is used to lock the end of the stainless - steel mirror panel 3 onto the first cross - bar 24. This locking member 5 includes a mounting buckle 51, a cavity portion 52, a locking rod 53, a locking cam 54, a rubber locking ball 55, and a return spring 56. The mounting buckle 51 is integrally provided at the end of the stainless - steel mirror panel 3 and is in a "U" shape for the lower side of the first cross - bar 24 to be inserted into. The cavity portion 52 is opened on the lower side of the first cross - bar 24 and is communicated with the threaded hole 241. At the same time, the locking rod 53 is arranged in the cavity portion 52, and one end of the locking rod 53 is for the lower end of the pressing bolt 242 to abut against. The locking cam 54 is welded to the end of the locking rod 53 far from the pressing bolt 242, and the center of the locking cam 54 is hinged to the lower side of the cavity portion 52 through a shaft and a bearing. At this time, the locking rod 53 can be hinged to the lower side of the cavity portion 52 by using the locking cam 54. At the same time, the rubber locking ball 55 is bonded to the end of the locking rod 53 far from the locking cam 54 and is used to abut against the inner wall of the mounting buckle 51. The return spring 56 has its upper end welded to the upper - side inner wall of the cavity portion 52 and its lower end welded to the middle of the locking rod 53. The elastic restoring force of the return spring 56 can drive the locking rod 53 to swing upward. At the same time, a fixing column 251 extending downward is welded on the second cross - bar 25, and there are two fixing columns 251 at the position of each plate body 1, which are respectively located on both sides of the plate body 1. Through - holes 31 for the fixing columns 251 to pass through are opened on the stainless - steel mirror panel 3.

[0043] Refer to Figure 2 , Figure 6 , a clamping member 6 is also provided on the second cross - bar 25. The clamping member 6 can be used to clamp the upper end of the plate body 1. This clamping member 6 includes an external - thread column 61, a connecting sleeve 62, a pressing plate 63, and a locking nut 64. The lower end of the external - thread column 61 is welded to the second cross - bar 25 and is located between two adjacent plate bodies 1. The connecting sleeve 62 is used to sleeved on the external - thread column 61. At the same time, the pressing plate 63 is integrally provided on both sides of the connecting sleeve 62 and is used to abut against the side wall of the plate body 1. The locking nut 64 is threadedly connected to the external - thread column 61 and is used to abut against the connecting sleeve 62.

[0044] Principle: The inverted V-shaped support arm 21 can be used to support the roof, and then the short column 22 is used to support the first cross bar 24, and the long column 23 is used to support the second cross bar 25; the right-angle block 4 is embedded in the upper side of the first cross bar 24 by using the buckle 41, and then the lower end of the plate body 1 can be supported on the cross-sectional hypotenuse of the right-angle block 4, and then the clamping bolt 242 is passed through the waist-shaped hole 431 and threadedly connected to the threaded hole 241 on the first cross bar 24. At this time, the clamping bolt 242 can drive the clamping arm 43 to rotate toward one side of the plate body 1, so that the rubber pad 432 on the clamping arm 43 presses the plate body 1 on the right-angle block 4, thereby completing the stable clamping of the lower end of the plate body 1 on the first cross bar 24.

[0045] At the same time, after the upper end of the plate body 1 is abutted against the second cross bar 25, the connecting sleeve 62 is sleeved on the external threaded column 61 on the second cross bar 25, and the pressure plate 63 on the connecting sleeve 62 can abut against the side wall of the plate body 1. Then, the locking nut 64 is threadedly connected to the external threaded column 61, so that the locking nut 64 is pressed against the connecting sleeve 62, and finally the pressure plate 63 can be pressed against the plate body 1, so that the plate body 1 is pressed against the second cross bar 25, completing the stable clamping of the upper end of the plate body 1 on the second cross bar 25, thereby completing the inclined connection of the plate body 1 between the first cross bar 24 and the second cross bar 25.

[0046] The stainless steel mirror panel 3 parallel to the roof is arranged below the panel body 1. The stainless steel mirror panel 3 is embedded in the lower side of the first cross bar 24 by means of the mounting buckle 51 at the end thereof. When the clamping bolt 242 is tightened, the clamping bolt 242 moves toward the threaded hole 241 and then moves into the cavity 52 at the lower side of the first cross bar 24. Then, the lower end of the clamping bolt 242 can abut against the locking rod 53 and drive the locking rod 53 to swing downward. At this time, after the locking cam 54 at the hinged end of the locking rod 53 rotates, one end of the locking cam 54 is After protruding from the cavity portion 52, it can be pressed against the inner wall of the mounting buckle 51, and the rubber locking ball 55 at the end of the locking rod 53 away from the locking cam 54 will also be pressed against the inner wall of the mounting buckle 51. At this time, the inner walls on both sides of the mounting buckle 51 can be locked at the same time by the locking cam 54 and the rubber locking ball 55, thereby completing the stable connection between the stainless steel mirror panel 3 and the first cross bar 24; at the same time, the fixing column 251 on the second cross bar 25 is used to pass through the through hole 31 on the stainless steel mirror panel 3, thereby further limiting the stainless steel mirror panel 3.

[0047] At this time, by utilizing the high reflection efficiency of the stainless steel mirror plate 3, the light irradiated on the roof can be efficiently reflected to the back of the plate body 1, and finally the effective use efficiency of the back of the double-sided solar photovoltaic panel can be improved.

[0048] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A rooftop power generation system based on double-sided solar photovoltaic panels, comprising a plurality of double-sided solar photovoltaic panels (1) tilted on a rooftop, and a support assembly (2) fixed on the rooftop and used to support the panels (1), characterized in that: The support assembly (2) includes two support arms (21) arranged at both ends of the roof and in an inverted V shape for cooperation with the roof, multiple short columns (22) arranged on the support arms (21) and corresponding to the lower ends of multiple inclined plate bodies (1), multiple long columns (23) arranged on the support arms (21) and corresponding to the upper ends of multiple inclined plate bodies (1), multiple first cross bars (24) arranged between the two side support arms (21) and having both ends connected to the upper ends of the short columns (22) respectively, multiple second cross bars (25) arranged between the two side support arms (21) and having both ends connected to the upper ends of the long columns (23) respectively. A stainless steel mirror panel (3) parallel to the roof is arranged below the plate body (1). The cross section of the first cross bar (24) is a right trapezoid with an inclined surface facing upwards. A right angle block (4) clamped between the plate body (1) and the stainless steel mirror panel (3) is arranged at the middle position of the first cross bar (24) and on the plate body (1). The hypotenuse of the cross section of the right angle block (4) is for the lower end of the plate body (1) to fit, and the right angle side of the cross section is for the stainless steel mirror panel (3) to fit. A buckle (41) for the upper side of the first cross bar (24) to be embedded and for cooperation with the first cross bar (24) is arranged on one side of the right angle block (4). An installation shaft (42) with an extension direction parallel to the extension direction of the first cross bar (24) is arranged at the end of the buckle (41) away from the right angle block (4). Pressing arms (43) with one end hinged to the end of the installation shaft (42) and the other end for pressing on the plate body (1) are arranged at both ends of the installation shaft (42). A waist-shaped hole (431) with an extension direction parallel to the extension direction of the pressing arm (43) is arranged on the pressing arm (43). A threaded hole (241) corresponding to the position of the waist-shaped hole (431) is arranged on the inclined surface on the upper side of the first cross bar (24). A pressing bolt (242) passing through the waist-shaped hole (431) and threadedly connected to the threaded hole (241) is arranged on the first cross bar (24). A locking member (5) for locking the end of the stainless steel mirror panel (3) to the first cross bar (24) is arranged between the stainless steel mirror panel (3) and the first cross bar (24). A clamping member (6) for clamping the upper end of the plate body (1) is also arranged on the second cross bar (25).

2. A rooftop power generation system based on double-sided solar photovoltaic panels according to claim 1, characterized in that: The locking member (5) includes an installation buckle (51) arranged at the end of the stainless steel mirror panel (3) and in a "U" shape for the lower side of the first cross bar (24) to be embedded, a cavity part (52) opened on the lower side of the first cross bar (24) and communicated with the threaded hole (241), a locking rod (53) arranged in the cavity part (52) with one end hinged to the lower side of the cavity part (52) and the other end for the pressing bolt (242) to abut against, and a locking cam (54) arranged at the hinged end of the locking rod (53) and for rotating towards the outside of the cavity part (52) and then abutting against the inner wall of the installation buckle (51).

3. A rooftop power generation system based on double-sided solar photovoltaic panels according to claim 2, characterized in that: The locking member (5) further includes a rubber locking ball (55) arranged at the end of the locking rod (53) away from the locking cam (54) and for abutting against the inner wall of the installation buckle (51).

4. A rooftop power generation system based on double-sided solar photovoltaic panels according to claim 2, characterized in that: The locking member (5) further comprises a return spring (56) whose upper end is connected to the upper inner wall of the cavity portion (52) and whose lower end is connected to the middle of the locking rod (53), wherein the elastic restoring force of the return spring (56) drives the locking rod (53) to swing upward.

5. A rooftop power generation system based on double-sided solar photovoltaic panels according to claim 1, characterized in that: A rubber pad (432) for pressing against the side wall of the plate body (1) is provided at one end of the pressing arm (43) away from the mounting shaft (42).

6. A rooftop power generation system based on double-sided solar photovoltaic panels according to claim 1, characterized in that: The cross-sectional shape of the second cross-bar (25) is the same as the cross-sectional shape of the first cross-bar (24).

7. A rooftop power generation system based on double-sided solar photovoltaic panels according to claim 4, characterized in that: The clamping member (6) comprises an externally threaded column (61) arranged on the second crossbar (25) and located between two adjacent plates (1), a connecting sleeve (62) sleeved on the externally threaded column (61), a pressing plate (63) arranged on both sides of the connecting sleeve (62) and used to abut against the side wall of the plate (1), and a locking nut (64) threadedly connected to the externally threaded column (61) and used to abut against the connecting sleeve (62).

8. A rooftop power generation system based on double-sided solar photovoltaic panels according to claim 1, characterized in that: The second crossbar (25) is provided with a fixing column (251) extending downward, and the stainless steel mirror panel (3) is provided with a through hole (31) for the fixing column (251) to pass through.

9. A rooftop power generation system based on double-sided solar photovoltaic panels according to claim 1, characterized in that: The support arm (21) is provided with a plurality of hooks (7) for fixing to the roof, the lower end of the hook (7) is provided with a fixing plate (71) for fixing to the concrete surface of the roof, and the upper end of the hook (7) is provided with a support platform (72) to which the support arm (21) is connected by bolts.

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