Compact low-voltage distributed photovoltaic power station

Abstract

The invention relates to the technical field of photovoltaic supports, in particular to a compact low-voltage distributed photovoltaic power station which comprises a base, a U-shaped frame, a mounting frame and a photovoltaic panel and further comprises a support, a motor, an overturning assembly, an adjusting assembly, a flow guide box and a baffle, and the right end of the mounting frame is provided with a first rotating rod and connected with a connecting frame through the first rotating rod. Through the arrangement of the driving rod, the cam, the first rotating rod and the reciprocating screw rod, when the driving rod rotates forwards, the cam is used for driving the photovoltaic panel to rotate by 90 degrees with the first rotating rod as a rotating shaft and be fixed, and on the premise that the photoelectric conversion rate in the roof range is not reduced, the photovoltaic conversion efficiency is improved; a worker can overhaul and maintain any photovoltaic panel without drilling to the bottom of the mounting rack; when the driving rod rotates reversely, the reciprocating screw rod is used for adjusting the height of the left end of the photovoltaic panel and the heat dissipation effect of the back face of the photovoltaic panel, the installed capacity of the photovoltaic power station can be increased in the limited space of the roof, and the photoelectric conversion rate can also be guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic brackets, and specifically to a compact low-voltage distributed photovoltaic power station. Background Art

[0002] Photovoltaic power generation is a way of converting light energy into electrical energy. In the northwest region of China, solar energy resources are abundant, and photovoltaic power generation is widely used. A low-voltage distributed photovoltaic power station refers to a photovoltaic power generation facility built near the user's site, operating in a mode of self-use by the user side for the surplus electricity to be fed into the grid, and characterized by balancing and regulating in the distribution system.

[0003] Existing low-voltage distributed photovoltaic power stations are mostly installed naked on the tops of residential buildings or factories. During the photovoltaic conversion process within a suitable temperature range, each adjusted photovoltaic bracket needs to be fixed separately using expansion screws or through a cement base combined with the roof by pouring. In order to be able to repair each photovoltaic panel later, a maintenance distance needs to be left between two adjacent photovoltaic panels. Since the position of the fixed photovoltaic bracket cannot be moved, there is a situation where one photovoltaic panel casts a shadow under sunlight and blocks the surface of another photovoltaic panel, making it impossible to ensure the photoelectric conversion efficiency of each photovoltaic panel while increasing the installed capacity of the photovoltaic power station on the roof. For the above problems, there are already good solutions in the prior art. For example, a square frame bracket structure of a movable distributed photovoltaic power station with the patent number CN214851042U can flexibly arrange the installation positions of photovoltaic panels and reserve the distance between two adjacent photovoltaic panels without damaging the roof surface. While increasing the installed capacity of the photovoltaic power station, it can avoid the problem of light blockage between two adjacent photovoltaic panels and ensure the photoelectric conversion efficiency. However, there are still the following defects: Due to the limited roof area, to increase the installed capacity and photoelectric conversion efficiency at the roof position, it is necessary to increase the number of photovoltaic panels laid on the roof or increase the area of a single photovoltaic panel as much as possible. The conventional installation method is to install in a rectangular array at a certain angle, and it is necessary to ensure that there is no mutual occlusion in the front, back, left, and right directions during the period from 9:00 to 15:00 every day. The problem caused by this is that the more photovoltaic panels are laid or the larger the area of the photovoltaic panel is, the larger the range required to avoid light blockage between two adjacent photovoltaic panels is, resulting in the light irradiated onto the roof not being effectively utilized, still limiting the installed capacity of the photovoltaic power station at the roof position, and further limiting the photoelectric conversion efficiency at the roof position.

[0004] Therefore, in order to solve the above problems, a compact low-voltage distributed photovoltaic power station is proposed. Summary of the Invention

[0005] The object of the present invention is to provide a compact low-voltage distributed photovoltaic power station, which solves the problem that when multiple photovoltaic panels are installed in a limited roof space or the area of a single photovoltaic panel is increased, the light at the roof position cannot be effectively utilized, thus restricting the photoelectric conversion rate at the roof position. By providing a driving rod, a cam, a first rotating rod and a reciprocating lead screw, when the driving rod rotates forward, the photovoltaic panel can be driven by the cam to rotate 90° around the first rotating rod as the rotation axis and be fixed. Without reducing the photoelectric conversion rate within the roof range, maintenance and repair operations can be carried out on any photovoltaic panel without the need for workers to drill to the bottom of the mounting frame; when the driving rod rotates reversely, the height of the left end of the photovoltaic panel and the heat dissipation effect at the back position of the photovoltaic panel can be adjusted by the reciprocating lead screw. In a limited roof space, the installed capacity of the photovoltaic power station can be increased, and the photoelectric conversion rate can be guaranteed at the same time.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A compact low-voltage distributed photovoltaic power station, comprising a base, a U-shaped frame, a mounting frame and a photovoltaic panel. The U-shaped frame is arranged on the base, the mounting frame is arranged above the base and connected to the U-shaped frame, and the photovoltaic panel is embedded inside the mounting frame. It further includes a bracket, a motor, a flipping assembly, an adjusting assembly, a diversion box and a baffle. A first rotating rod is arranged at the right end of the mounting frame and connected to a connecting frame through the first rotating rod. A second rotating rod is arranged at the right end of the connecting frame and connected to the U-shaped frame through the second rotating rod. The bracket is arranged on the base, the motor is arranged on the bracket, the flipping assembly is arranged inside the bracket. When the output end of the motor rotates forward, the flipping assembly drives the mounting frame to rotate around the first rotating rod as the rotation axis through the first rotating rod. A first connecting rod is arranged at the left end of the mounting frame, the adjusting assembly is arranged at the left end of the first connecting rod. When the output end of the motor rotates reversely, the adjusting assembly adjusts the horizontal angle between the mounting frame and the base through the first connecting rod. The diversion box is arranged on the base and below the mounting frame, and the baffle is arranged on one side of the diversion box and connected to the adjusting assembly. When the mounting frame rotates forward or reversely around the second rotating rod, the adjusting assembly reduces or increases the shielding range of the diversion box through the baffle.

[0008] Preferably, the flipping assembly includes a driving rod, a cam, a driving rack, a driving wheel, a first bevel gear, a second bevel gear, a protective sleeve and a wind speed sensor. The driving rod is arranged inside the bracket and its left end is connected to the output end of the motor. The cam is arranged at the right end of the driving rod and a driving groove is formed on its surface. The driving rack is arranged directly above the cam and its lower end is slidably connected to the cam through the driving groove. The driving wheel is sleeved on the second rotating rod and tooth grooves are formed around its outer wall. The driving rack is meshed with the tooth grooves. The right end of the first rotating rod penetrates through the connecting frame and is connected to the first bevel gear. The second bevel gear is sleeved on the second rotating rod and meshed with the first bevel gear. The protective sleeve is arranged on the first rotating rod and the second rotating rod. The driving rack is movably sleeved with the bottom of the protective sleeve. The first bevel gear and the second bevel gear are arranged inside the protective sleeve, which can prevent the transmission between the driving rack and the tooth grooves and between the first bevel gear and the second bevel gear from being affected by the wind and sand in the environment. This position can be further protected by installing a corrugated pipe. The wind speed sensor is arranged on the top of the protective sleeve and is connected to the motor in cooperation. When the photovoltaic panel works normally, the top of the protective sleeve is parallel to the surface of the photovoltaic panel.

[0009] It can be seen that the roof space is limited. In order to effectively utilize the light within the roof range, the conventional method is to splice multiple photovoltaic panels at a certain installation angle. Considering that the photovoltaic panels need to be regularly inspected and maintained to ensure their normal operation and maximum photoelectric conversion efficiency, and the photovoltaic panel in the middle position is far from the edge, it is not convenient to inspect and maintain the photovoltaic panel in the middle position. Therefore, this solution is adopted. When it is necessary to inspect and maintain the photovoltaic panel in the middle position, the installation frame can be flipped to make the photovoltaic panel inside the installation frame perpendicular to the base, which is convenient for the staff to inspect and maintain the photovoltaic panel in the middle position. While reducing the limitation on the installed capacity of the photovoltaic power station at the roof position, it improves the photoelectric conversion rate in the limited space.

[0010] Preferably, the adjusting assembly includes a reciprocating lead screw, a slider, a second connecting rod, a support member, a support plate and a third connecting rod. The reciprocating lead screw is sleeved on the driving rod. The slider is threadedly sleeved on the reciprocating lead screw. The second connecting rod is arranged on the left side of the slider. The slider is connected to the support member through the second connecting rod. The bottom of the support member is in rolling contact with the top of the base. The end of the support member is connected to the baffle. The support plate is arranged above the base and its lower end is hinged to the support member. The third connecting rod penetrates through the upper end of the support plate. The left end of the first connecting rod is connected to the third connecting rod.

[0011] It can be seen that the altitude angle of the sun in summer is larger than that in winter. Therefore, in summer, the photovoltaic panel needs to be at a larger angle to avoid overheating when exposed to light and maximize the photoelectric conversion efficiency. Thus, this solution is adopted. The installation angle of the photovoltaic panel can be adjusted according to the season change, increasing the installation angle of the photovoltaic panel in summer and decreasing it in winter. And after increasing the installation angle of the photovoltaic panel in summer, the shielding range of the baffle for the diversion box is reduced, so as to utilize the air flow in the environment to cool the photovoltaic panel and ensure the normal operation of the photovoltaic panel. While after decreasing the installation angle of the photovoltaic panel in winter, the shielding range of the baffle for the diversion box can be increased, thus avoiding the further influence of the air flow on the photoelectric conversion effect of the photovoltaic panel in a low-temperature environment.

[0012] Preferably, the diversion box includes side segments and a middle segment. There are two side segments which are symmetrically arranged on both sides of the middle segment. The middle segment is hollow and sleeved with the driving rod and the second connecting rod. The reciprocating lead screw and the slider are arranged inside the middle segment. The side segment includes a first segment and a second segment. The first segment is arranged in contact with the baffle. The second segment is arranged between the first segment and the middle segment. An air inlet is opened inside the first segment, and the diameter of the air inlet decreases from the first segment to the second segment. A wind guiding groove communicated with the air inlet is opened inside the second segment, and a plurality of air outlets are opened on the surface of the second segment.

[0013] It can be seen that temperature will affect the photoelectric conversion efficiency of the photovoltaic panel. Especially under the hot weather conditions in summer, the mobility of electrons and holes moving inside the material decreases, and the conductivity of electrons decreases, resulting in a decrease in the photoelectric conversion efficiency. By adopting the above solution, after the air flow enters the inside of the air inlet, it will first gather and then enter the inside of the wind guiding groove, and finally flows out through the air outlets opened on the surface of the second segment and directly acts on the back of the photovoltaic panel, increasing the contact area between the photovoltaic panel and the air flow, realizing the effective heat dissipation of the photovoltaic panel, and thus being able to effectively ensure the photoelectric conversion efficiency of the photovoltaic panel.

[0014] Preferably, the air outlets include a first air outlet and a second air outlet. The first air outlet and the second air outlet are respectively opened at the top and bottom of the second segment. The first air outlet and the corresponding second air outlet are coaxially arranged, and the diameter of the first air outlet is larger than that of the second air outlet.

[0015] It can be seen that the photovoltaic panel is exposed. When rainwater hits the top of the diversion box, it can flow downward through the inside of the first air outlet and the second air outlet, avoiding the accumulation of rainwater inside the wind guiding groove. At the same time, it can make the air flow rate flowing out through the first air outlet per unit time greater than that of the second air outlet, thus realizing the effective heat dissipation of the photovoltaic panel.

[0016] Preferably, the photovoltaic panel is a double-sided photovoltaic panel. A first plane mirror is embedded at the top of the base, and the support plate is bent downward to the right. A second plane mirror is embedded on the surface of the support plate.

[0017] It can be seen that the space for installing a distributed photovoltaic power station on the roof is limited, and a bifacial photovoltaic panel can utilize the reflection effect of light to perform photovoltaic conversion on its back simultaneously. Therefore, this solution is adopted. Under the action of the first flat mirror and the second flat mirror, light can be reflected, so that the light irradiated on the surfaces of the first flat mirror and the second flat mirror can be reflected to the back of the photovoltaic panel, thereby expanding the photovoltaic conversion rate within a limited space range.

[0018] Preferably, a diversion port is formed on the surface of the mounting frame. The diversion port is located directly above the diversion box, and guiding grooves are formed at both ends of the diversion port.

[0019] It can be seen that the photovoltaic panel is installed outdoors naked. Under the weather conditions with a large temperature difference between day and night, dew or frost is likely to form on the surface of the photovoltaic panel. As the temperature gradually rises after dawn, water droplets will form on the surface of the photovoltaic panel. Since the photovoltaic panel is installed obliquely, the water droplets will form a water flow under the action of their own gravity and flow downward along the surface of the photovoltaic panel, resulting in the photovoltaic panel at the lower position being blocked by the water flow for a longer time than the photovoltaic panel at the upper position, thereby affecting the photovoltaic conversion rate of the photovoltaic panel at the lower position. Therefore, this solution is adopted. During the downward flow of the water droplets on the surface of the photovoltaic panel, they will directly enter the corresponding diversion port, making the water droplets on the surface of each photovoltaic panel in a relatively independent state, avoiding the aggregation of water droplets on the surfaces of two adjacent photovoltaic panels, thereby reducing the blocking time of the water flow to the photovoltaic panel, and further ensuring the photovoltaic conversion rate of each photovoltaic panel.

[0020] Preferably, a plurality of the bases and the mounting frames are provided, and the number of the bases is the same as that of the mounting frames. The bases are provided with a hollow interior. A U-shaped pipe is arranged between two adjacent bases. Both ends of the U-shaped pipe respectively penetrate into the interiors of the corresponding bases. A water inlet pipe and a pressure balance pipe penetrate through the side of one of the bases.

[0021] By adopting the above solution, it is possible to connect the interiors of multiple bases after connecting the multiple bases in sequence. When injecting water into the interior of one of the bases, the interiors of the multiple bases can be filled with water synchronously by using the principle of a communicating vessel, so that the multiple bases are connected into a whole and the overall stability is ensured, that is, the stability of multiple photovoltaic panels after installation is ensured.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. By means of a plurality of installed mounting brackets, drive rods, cams, and reciprocating lead screws, the multi-piece photovoltaic panels are arranged coplanarly by arranging the plurality of mounting brackets side by side, thereby avoiding light shielding of adjacent photovoltaic panels under the illumination conditions of each photovoltaic panel at different time periods. Furthermore, while increasing the installed capacity, the photoelectric conversion efficiency of each photovoltaic panel and the photoelectric conversion efficiency of the light within the limited range of the roof are ensured. After installation, the photovoltaic power station can drive the cam by the forward rotation of the drive rod, enabling all the photovoltaic panels to synchronously rotate to a state perpendicular to the axis of the second rotating rod, maximizing the gap between adjacent mounting brackets, and avoiding the influence on the maintenance and repair operations of the photovoltaic panels in the middle position due to the large number of photovoltaic panels. By the reverse rotation of the drive rod to drive the reciprocating lead screw to rotate, on the premise that the photovoltaic panel is parallel to the axis of the second rotating rod, the horizontal installation angle of the photovoltaic panel is adjusted according to the different solar altitude angles in different seasons, further ensuring the photoelectric conversion efficiency of each photovoltaic panel and the photoelectric conversion efficiency of the light within the limited range of the roof.

[0024] 2. By means of the provided support plate and flow guide box, the horizontal installation angle of the photovoltaic panel can be adjusted when the solar altitude angles vary greatly in different seasons, enabling the photovoltaic panel to receive light at an appropriate angle. Moreover, the first plane mirror provided on the surface of the support plate and the second plane mirror provided on the surface of the base can reflect part of the light to the back of the photovoltaic panel, achieving the effect of photoelectric conversion on both sides of the photovoltaic panel simultaneously, thereby ensuring the photoelectric conversion efficiency of the light within the limited range of the roof. As the solar altitude angle increases in summer, the flow guide box installed below the photovoltaic panel can guide the airflow in the environment, enabling the airflow to flow towards the back of the photovoltaic panel, increasing the flow rate of the airflow on the back of the photovoltaic panel, and thus realizing the cooling treatment of the photovoltaic panel in a high-temperature environment, further avoiding the reduction of the photoelectric conversion efficiency within the limited range of the roof due to high temperature.

[0025] 3. By means of the provided baffle plate, when it is necessary to lower the horizontal installation angle of the photovoltaic panel in winter, the support member can be used to drive the baffle plate to move to the right, increasing the shielding range of the baffle plate for the flow guide box, thereby reducing the aperture of the air inlet on the flow guide box, reducing the air flow rate entering the interior of the flow guide box per unit time in a low-temperature environment, and further reducing the airflow directly blowing towards the back of the photovoltaic panel, effectively ensuring the photoelectric conversion effect of the photovoltaic panel, and thus ensuring the photoelectric conversion efficiency of the light within the limited range of the roof. When the wind speed sensor detects that the environmental wind force exceeds the set value, it can control the motor to adjust the photovoltaic panel to the minimum horizontal installation angle through the adjustment mechanism, and can use the baffle plate to achieve a full-range blockage of the air inlet of the flow guide box, thereby ensuring the stability of the photovoltaic power station, avoiding damage to the photovoltaic panel caused by strong winds, and thus ensuring the photoelectric conversion efficiency of the light within the limited range of the roof when using the photovoltaic panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1Schematic structural diagram of the present invention;

[0027] Figure 2 For the present invention Figure 1 Enlarged view of the partial A part in the present invention;

[0028] Figure 3 For the present invention Figure 1 Schematic diagram of the partial sectional connection structure of the base, mounting frame, adjusting component and diversion box from the same perspective in the present invention;

[0029] Figure 4 For the present invention Figure 3 Schematic diagram of the connection structure of the support member, diversion box and baffle in the present invention;

[0030] Figure 5 For the present invention Figure 3 Enlarged view of the partial B part in the present invention;

[0031] Figure 6 For the present invention Figure 1 Left view of the present invention;

[0032] Figure 7 Schematic diagram of the state of the present invention during the maintenance of the photovoltaic panel;

[0033] Figure 8 Schematic diagram of the state of the photovoltaic panel of the present invention at the minimum horizontal installation angle.

[0034] In the figure: 1. Base; 2. U-shaped frame; 3. Mounting frame; 31. First rotating rod; 32. Connecting frame; 33. Second rotating rod; 34. First connecting rod; 35. Diversion opening; 36. Guide groove; 37. U-shaped pipe; 38. Water inlet pipe; 39. Air pressure balance pipe; 4. Photovoltaic panel; 5. Bracket; 6. Motor; 7. Flipping assembly; 71. Driving rod; 72. Cam; 721. Driving groove; 73. Driving rack; 74. Driving wheel; 741. Tooth groove; 75. First bevel gear; 76. Second bevel gear; 77. Protective sleeve; 78. Wind speed sensor; 8. Adjusting component; 81. Reciprocating lead screw; 82. Slide block; 83. Second connecting rod; 84. Support member; 85. Support plate; 86. Third connecting rod; 9. Diversion box; 91. Side segment; 911. Segment one; 9111. Air inlet; 912. Segment two; 9121. Air guide groove; 913. Air outlet; 9131. First air outlet; 9132. Second air outlet; 92. Middle segment; 10. Baffle; 11. First plane mirror; 12. Second plane mirror. Detailed implementation manners

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0036] Please refer to Figures 1 to 8 , the present invention provides a compact low-voltage distributed photovoltaic power station, and the technical solution is as follows:

[0037] Specifically, please refer to Figure 1 , Figure 7 and Figure 8 , a compact low-voltage distributed photovoltaic power station, including a base 1, a U-shaped frame 2, a mounting frame 3 and a photovoltaic panel 4. The U-shaped frame 2 is arranged on the base 1, the mounting frame 3 is arranged above the base 1 and connected to the U-shaped frame 2, and the photovoltaic panel 4 is embedded inside the mounting frame 3. There are multiple bases 1 and mounting frames 3, and the number of bases 1 and mounting frames 3 is the same. The base 1 is hollow, and a U-shaped pipe 37 is arranged between two adjacent bases 1. Both ends of the U-shaped pipe 37 penetrate into the corresponding base 1, and a water inlet pipe 38 and a pressure balance pipe 39 penetrate through the side of one of the bases 1.

[0038] Under the above settings, it is possible to connect the internal spaces of multiple bases 1 after connecting the multiple bases 1 in sequence. When injecting water into the interior of one of the bases 1, the principle of communicating vessels can be used to synchronously fill the interiors of multiple bases 1 with water, so that the multiple bases 1 are connected into a whole and the overall stability is ensured, that is, the stability after the installation of multiple photovoltaic panels 4 is ensured.

[0039] As an implementation manner of the present invention, refer to Figure 1 , Figure 2 and Figure 7, further comprising a bracket 5, a motor 6, a flipping assembly 7, an adjusting assembly 8, a diversion box 9 and a baffle 10. A first rotating rod 31 is provided at the right end of the mounting frame 3 and is connected to a connecting frame 32 through the first rotating rod 31. A second rotating rod 33 is provided at the right end of the connecting frame 32 and is connected to the U-shaped frame 2 through the second rotating rod 33. The bracket 5 is arranged on the base 1, the motor 6 is arranged on the bracket 5, and the flipping assembly 7 is arranged inside the bracket 5. The flipping assembly 7 includes a driving rod 71, a cam 72, a driving rack 73, a driving wheel 74, a first bevel gear 75, a second bevel gear 76, a protective sleeve 77 and a wind speed sensor 78. The driving rod 71 is arranged inside the bracket 5 and its left end is connected to the output end of the motor 6. The cam 72 is arranged at the right end of the driving rod 71 and a driving groove 721 is formed on its surface. Here, the cam 72 is rotatably sleeved on the driving rod 71 through a one-way bearing, that is, when the output end of the motor 6 drives the driving rod 71 to rotate forward, the cam 72 will rotate with the driving rod 71, while when the output end of the motor 6 drives the driving rod 71 to rotate backward, the cam 72 will not rotate with the driving rod 71. The driving rack 73 is arranged directly above the cam 72 and its lower end is slidably connected to the cam 72 through the driving groove 721. The driving wheel 74 is sleeved on the second rotating rod 33 and a tooth groove 741 is formed around its outer wall. The driving rack 73 is meshed with the tooth groove 741. The right end of the first rotating rod 31 penetrates through the connecting frame 32 and is connected to the first bevel gear 75. The second bevel gear 76 is sleeved on the second rotating rod 33 and is meshed with the first bevel gear 75. The protective sleeve 77 is arranged on the first rotating rod 31 and the second rotating rod 33. The driving rack 73 is movably sleeved on the bottom of the protective sleeve 77. The first bevel gear 75 and the second bevel gear 76 are arranged inside the protective sleeve 77. The wind speed sensor 78 is arranged on the top of the protective sleeve 77 and is cooperatively connected with the motor 6. When the photovoltaic panel 4 is working normally, the top of the protective sleeve 77 is parallel to the surface of the photovoltaic panel 4.

[0040] When maintenance and repair operations need to be carried out on the photovoltaic panel 4 in the middle position, under the above set conditions, when the motor 6 is started and the cam 72 rotates forward under the action of the motor 6 and the driving rod 71, the driving groove 721 formed on the surface of the cam 72 can drive the driving rack 73 to move up and down reciprocally by using the sliding connection with the driving rack 73. Since the driving rack 73 is meshed and connected with the tooth groove 741, the driving wheel 74 will rotate reciprocally as the driving rack 73 moves up and down. Since the driving wheel 74 is sleeved on the second rotating rod 33 and the second rotating rod 33 is sleeved with the second bevel gear 76, during the process of the second rotating rod 33 following the driving wheel 74 to rotate, the first rotating rod 31 can be driven to rotate reciprocally by the meshing connection between the first bevel gear 75 and the second bevel gear 76. Since the right end of the mounting bracket 3 is connected with the first rotating rod 31, the mounting bracket 3 can be driven to rotate during the rotation of the first rotating rod 31, so as to realize the flipping of the photovoltaic panel 4, make the photovoltaic panel 4 keep a vertical state with the axis of the second rotating rod 33, and further facilitate the maintenance and repair operations on the photovoltaic panel 4 in the middle position. After the maintenance and repair operations are completed, the motor 6 is started continuously to rotate the photovoltaic panel 4 to the initial angle. Since the photovoltaic panel 4 is in a parallel state with the top of the protective sleeve 77 during normal operation, the wind speed sensor 78 can directly detect the wind speed on the surface of the photovoltaic panel 4.

[0041] As an implementation manner of the present invention, referring to Figure 3 , Figure 4 and Figure 6 , a first connecting rod 34 is arranged at the left end of the mounting bracket 3, the adjusting assembly 8 is arranged at the left end of the first connecting rod 34, when the output end of the motor 6 rotates reversely, the adjusting assembly 8 adjusts the horizontal angle between the mounting bracket 3 and the base 1 through the first connecting rod 34. The adjusting assembly 8 includes a reciprocating lead screw 81, a slider 82, a second connecting rod 83, a support member 84, a support plate 85 and a third connecting rod 86. The reciprocating lead screw 81 is sleeved on the driving rod 71. Here, the reciprocating lead screw 81 is rotationally sleeved on the driving rod 71 through a one-way bearing, that is, when the output end of the motor 6 drives the driving rod 71 to rotate reversely, the driving rod 71 will rotate along with the driving rod 71, and when the output end of the motor 6 drives the driving rod 71 to rotate forward, the cam 72 will not rotate along with the driving rod 71. The slider 82 is threadedly sleeved on the reciprocating lead screw 81. The second connecting rod 83 is arranged on the left side of the slider 82. The slider 82 is connected with the support member 84 through the second connecting rod 83. The bottom of the support member 84 is in rolling contact with the top of the base 1. The end of the support member 84 is connected with the baffle 10. The support plate 85 is arranged above the base 1 and the lower end is hinged with the support member 84. The third connecting rod 86 penetrates through the upper end of the support plate 85. The left end of the first connecting rod 34 is connected with the third connecting rod 86.

[0042] Under the above-mentioned setting conditions, when it is necessary to adjust the working angle of the photovoltaic panel 4, the motor 6 is started. When the output end of the motor 6 drives the driving rod 71 to rotate in the reverse direction, the reciprocating screw rod 81 can drive the slider 82 to move along the axis direction of the driving rod 71 through the threaded socket with the slider 82. Since both ends of the connecting rod two 83 are respectively connected to the slider 82 and the support member 84, and the bottom of the support member 84 is in rolling contact with the top of the base 1, the support member 84 will move along with the slider 82 under the action of the connecting rod two 83. The connecting rod one 34 is connected to the connecting rod three 86, and the connecting rod three 86 is arranged inside the upper end of the support plate 85. Under the hinge action of the support plate 85 and the support member 84, when the support member 84 moves horizontally, the horizontal angle of the mounting frame 3 can be adjusted, so that the angle of the photovoltaic panel 4 can be adjusted according to the altitude angle of the sun in different seasons, achieving the improvement of the photoelectric conversion rate within the limited range of the roof.

[0043] As an implementation manner of the present invention, referring to Figure 5 , the diversion box 9 is arranged on the base 1 and is located below the mounting frame 3. The baffle 10 is arranged on one side of the diversion box 9 and is connected to the adjusting assembly 8. When the mounting frame 3 rotates forward or reversely around the second rotating rod 33, the adjusting assembly 8 reduces or increases the shielding range of the diversion box 9 through the baffle 10. The diversion box 9 includes a side section 91 and a middle section 92. There are two side sections 91, which are symmetrically arranged on both sides of the middle section 92. The middle section 92 is hollow and is sleeved with the driving rod 71 and the connecting rod two 83. The reciprocating screw rod 81 and the slider 82 are arranged inside the middle section 92. The side section 91 includes a section one 911 and a section two 912. The section one 911 is arranged in contact with the baffle 10. The section two 912 is arranged between the section one 911 and the middle section 92. An air inlet 9111 is opened inside the section one 911, and the diameter of the air inlet 9111 is arranged to decrease from the section one 911 to the section two 912 direction. A wind guiding groove 9121 communicated with the air inlet 9111 is opened inside the section two 912. A plurality of air outlets 913 are opened on the surface of the section two 912. The air outlets 913 include an air outlet one 9131 and an air outlet two 9132. The air outlet one 9131 and the air outlet two 9132 are respectively opened at the top and bottom of the section two 912. The air outlet one 9131 and the corresponding air outlet two 9132 are coaxially arranged, and the diameter of the air outlet one 9131 is larger than that of the air outlet two 9132.

[0044] Under the above-mentioned setting conditions, when the installation angle of the photovoltaic panel 4 is lifted, the support member 84 moves to the left. During this process, the two ends of the support member 84 respectively drive the corresponding baffles 10 to move synchronously to the left, thereby reducing the shielding range of the baffle 10 for the air inlet 9111. When there is air flow in the environment in summer with high temperature, the air intake volume inside the diversion box 9 can be increased. And after the air flow enters the second section 912 through the air inlet 9111, more air flow can flow upward through the air outlet 9131 to the back of the corresponding photovoltaic panel 4, so as to realize the heat dissipation of the photovoltaic panel 4, ensuring the photoelectric conversion efficiency of the photovoltaic panel 4 in a high-temperature environment. When the wind speed sensor 78 detects that the wind force in the environment is large (such as typhoon weather), it can transmit a signal to the motor 6, so that the output end of the motor 6 can rotate in the reverse direction, driving the slider 82 to the rightmost position of the reciprocating screw rod 81. At this time, the horizontal angle of the photovoltaic panel 4 is in the minimum state, and the baffle 10 is in the state of completely blocking the air inlet 9111, reducing the unstable factors caused by strong wind to the photovoltaic panel 4 and ensuring the service life of the photovoltaic panel 4.

[0045] As an implementation manner of the present invention, referring to Figure 3 , the photovoltaic panel 4 is a double-sided photovoltaic panel. A flat mirror 11 is embedded at the top of the base 1, and the support plate 85 is bent downward to the right. A flat mirror 12 is embedded on the surface of the support plate 85.

[0046] Under the above-mentioned setting conditions, the flat mirror 11 and the flat mirror 12 can reflect light, so that the light irradiated on the surfaces of the flat mirror 11 and the flat mirror 12 can be reflected to the back of the photovoltaic panel 4, thereby expanding the photoelectric conversion efficiency within a limited space range. In order to ensure the strength of the flat mirror 11 and the flat mirror 12, tempered flat mirrors can be used.

[0047] As an implementation manner of the present invention, referring to Figure 5 , a diversion port 35 is opened on the surface of the mounting frame 3. The diversion port 35 is located directly above the diversion box 9, and guiding grooves 36 are opened at both ends of the diversion port 35.

[0048] Under the above-mentioned setting conditions, when there is water flowing on the surface of the photovoltaic panel 4, it can avoid the water flow interlacing between adjacent two photovoltaic panels 4, reducing the shielding time of the water flow on the surface of the photovoltaic panel 4, thereby ensuring the photoelectric conversion efficiency of each photovoltaic panel 4 for light.

[0049] Working principle: The photovoltaic panel of the present invention includes three states, namely, the maintenance state, the working state, and the protection state.

[0050] Maintenance state: The motor 6 is used to drive the mounting frame 3 to drive the photovoltaic panel 4 to rotate 90° around the rotating rod 31 as the rotation axis and fix it, so that the plane where each photovoltaic panel 4 is located is perpendicular to the axis of the rotating rod 33. Referring to Figure 7, in this state, a space for the staff to walk is formed between two adjacent mounting brackets 3, which facilitates the staff to perform maintenance and repair operations on the photovoltaic panels 4 at any position.

[0051] Working state: The plane where each photovoltaic panel 4 is located is parallel to the axis of the second rotating rod 33. According to the solar altitude angle and using the motor 6 to drive the mounting bracket 3 to drive the photovoltaic panel 4 to rotate around the second rotating rod 33 as the rotation axis, each photovoltaic panel 4 is adjusted to a state where it can be fully irradiated by sunlight. Refer to Figure 1 , in this state, there will be no problem of light occlusion between two adjacent photovoltaic panels 4, and different degrees of cooling of the photovoltaic panel 4 can be realized according to the different horizontal angles between the photovoltaic panel 4 and the base 1, thereby ensuring the photoelectric conversion rate of each photovoltaic panel 4 to light;

[0052] Protective state: On the basis of the working state, use the motor 6 to drive the mounting bracket 3 to rotate around the second rotating rod 33 as the rotation axis until the horizontal angle between the mounting bracket 3 and the base 1 reaches the minimum value. Refer to Figure 8 , in this state, it can effectively prevent the photovoltaic panel 4 from being damaged in strong wind weather, thereby ensuring the photoelectric conversion rate of the photovoltaic panel 4 during use.

[0053] Specifically:

[0054] When it is necessary to perform maintenance and repair operations on any photovoltaic panel 4, start the motor 6 to rotate forward. During the forward rotation of the motor 6, the driving rod 71 and the cam 72 can be used to drive the cam 72 to rotate through the socket connection, thereby using the transmission effect between the cam 72, the driving rack 73, the driving wheel 74, the second rotating rod 33, the second bevel gear 76, the first bevel gear 75 and the first rotating rod 31 to drive the first rotating rod 31 to rotate. When the first rotating rod 31 rotates, it can drive the corresponding photovoltaic panel 4 to rotate through the mounting bracket 3 until the plane where the photovoltaic panel 4 is located is perpendicular to the axis of the second rotating rod 33. In this state, the gap between two adjacent mounting brackets 3 is the largest, which is convenient for the staff to perform maintenance and repair operations on the photovoltaic panel 4 at any position without the staff having to drill to the bottom of the corresponding photovoltaic panel 4. After the maintenance is completed, the motor 6 continues to rotate forward until the plane where the photovoltaic panel 4 is located is parallel to the axis of the second rotating rod 33;

[0055] When the solar altitude angle increases in summer, the drive motor 6 reverses. During the reverse rotation of the motor 6, the reciprocating lead screw 81 is driven to rotate through the socket connection between the drive rod 71 and the reciprocating lead screw 81. Thus, the left end of the mounting frame 3 is driven to lift upward by the transmission effect among the reciprocating lead screw 81, the slider 82, the second connecting rod 83, the support member 84, the support plate 85, the third connecting rod 86 and the first connecting rod 34, so as to increase the horizontal installation angle of the photovoltaic panel 4, and ensure the photoelectric conversion efficiency of the photovoltaic panel 4 by appropriately reducing the illumination angle under high-temperature conditions; during this process, both ends of the support member 84 drive the corresponding baffles 10 to move leftward respectively, so that the two baffles 10 are respectively misaligned with the corresponding air inlets 9111 on the flow guide box 9, so as to increase the exposed diameter of the air inlets 9111, so that the air flow can blow upward from the air inlet 9131 to the back of the photovoltaic panel 4 after entering the inside of the air guide groove 9121 through the air inlets 9111, thereby realizing effective cooling of the photovoltaic panel 4 and avoiding the influence on the photoelectric conversion efficiency of the photovoltaic panel 4 on the light within the limited range of the roof under high-temperature environment;

[0056] On the contrary, when the solar altitude angle decreases in winter, the height of the left end of the mounting frame 3 is lowered and the exposed diameter of the air inlets 9111 is reduced at the same time, so as to reduce the convective heat dissipation on the back of the photovoltaic panel 4, thereby ensuring the photoelectric conversion efficiency of the photovoltaic panel 4 on the light within the limited range of the roof under low-temperature environment.

[0057] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A compact low-voltage distributed photovoltaic power station, comprising a base (1), a U-shaped frame (2), a mounting frame (3) and a photovoltaic panel (4), characterized in that: It further includes a bracket (5), a motor (6), a flipping assembly (7), an adjusting assembly (8), a diversion box (9) and a baffle (10). A first rotating rod (31) is provided at the right end of the mounting frame (3) and is connected to a connecting frame (32) through the first rotating rod (31). A second rotating rod (33) is provided at the right end of the connecting frame (32) and is connected to the U-shaped frame (2) through the second rotating rod (33). The bracket (5) is arranged on the base (1), the motor (6) is arranged on the bracket (5), the flipping assembly (7) is arranged inside the bracket (5). When the output end of the motor (6) rotates forward, the flipping assembly (7) drives the mounting frame (3) to rotate with the first rotating rod (31) as the rotation axis through the first rotating rod (31). A first connecting rod (34) is provided at the left end of the mounting frame (3), the adjusting assembly (8) is arranged at the left end of the first connecting rod (34). When the output end of the motor (6) rotates reversely, the adjusting assembly (8) adjusts the horizontal angle between the mounting frame (3) and the base (1) through the first connecting rod (34). The diversion box (9) is arranged on the base (1) and is located below the mounting frame (3). The baffle (10) is arranged on one side of the diversion box (9) and is connected to the adjusting assembly (8). When the mounting frame (3) rotates forward or reversely around the second rotating rod (33), the adjusting assembly (8) reduces or increases the shielding range of the diversion box (9) through the baffle (10).

2. The compact low-voltage distributed photovoltaic power station according to claim 1, characterized in that: The flipping assembly (7) includes a driving rod (71), a cam (72), a driving rack (73), a driving wheel (74), a first bevel gear (75), a second bevel gear (76), a protective sleeve (77) and an air speed sensor (78). The driving rod (71) is arranged inside the bracket (5) and its left end is connected to the output end of the motor (6). The cam (72) is arranged at the right end of the driving rod (71) and a driving groove (721) is formed on its surface. The driving rack (73) is arranged directly above the cam (72) and its lower end is slidably connected to the cam (72) through the driving groove (721). The driving wheel (74) is sleeved on the second rotating rod (33) and a tooth groove (741) is formed around its outer wall. The driving rack (73) is meshed with the tooth groove (741). The right end of the first rotating rod (31) penetrates through the connecting frame (32) and is connected to the first bevel gear (75). The second bevel gear (76) is sleeved on the second rotating rod (33) and is meshed with the first bevel gear (75). The protective sleeve (77) is arranged on the first rotating rod (31) and the second rotating rod (33). The driving rack (73) is movably sleeved on the bottom of the protective sleeve (77). The air speed sensor (78) is arranged on the top of the protective sleeve (77) and is cooperatively connected with the motor (6). When the photovoltaic panel (4) works normally, the top of the protective sleeve (77) is parallel to the surface of the photovoltaic panel (4).

3. A compact low-voltage distributed photovoltaic power station according to claim 2, characterized in that: The adjusting assembly (8) includes a reciprocating lead screw (81), a slider (82), a second connecting rod (83), a support member (84), a support plate (85) and a third connecting rod (86). The reciprocating lead screw (81) is sleeved on the driving rod (71). The slider (82) is threadedly sleeved on the reciprocating lead screw (81). The second connecting rod (83) is arranged on the left side of the slider (82). The slider (82) is connected to the support member (84) through the second connecting rod (83). The bottom of the support member (84) is in rolling contact with the top of the base (1). The end of the support member (84) is connected to the baffle (10). The support plate (85) is arranged above the base (1) and its lower end is hinged to the support member (84). The third connecting rod (86) penetrates through the upper end of the support plate (85). The left end of the first connecting rod (34) is connected to the third connecting rod (86).

4. A compact low-voltage distributed photovoltaic power station according to claim 3, characterized in that: The diversion box (9) includes side segments (91) and a middle segment (92). There are two side segments (91) which are symmetrically arranged on both sides of the middle segment (92). The middle segment (92) is hollow and sleeved on the driving rod (71) and the second connecting rod (83). The reciprocating lead screw (81) and the slider (82) are arranged inside the middle segment (92). The side segment (91) includes a first segment (911) and a second segment (912). The first segment (911) is arranged in contact with the baffle (10). The second segment (912) is arranged between the first segment (911) and the middle segment (92). An air inlet (9111) is opened inside the first segment (911). The diameter of the air inlet (9111) decreases from the first segment (911) to the second segment (912). A wind guiding groove (9121) communicating with the air inlet (9111) is opened inside the second segment (912). A plurality of air outlets (913) are opened on the surface of the second segment (912).

5. A compact low-voltage distributed photovoltaic power station according to claim 4, characterized in that: The air outlet (913) includes a first air outlet (9131) and a second air outlet (9132). The first air outlet (9131) and the second air outlet (9132) are respectively opened at the top and bottom of the second segment (912). The first air outlet (9131) and the corresponding second air outlet (9132) are coaxially arranged. The diameter of the first air outlet (9131) is larger than that of the second air outlet (9132).

6. The compact low-voltage distributed photovoltaic power station according to claim 3, wherein: The photovoltaic panel (4) is a double-sided photovoltaic panel. A first plane mirror (11) is embedded in the top of the base (1). The support plate (85) is bent downward to the right. A second plane mirror (12) is embedded in the surface of the support plate (85).

7. A compact low-voltage distributed photovoltaic power station according to claim 4, characterized in that: A diversion opening (35) is opened on the surface of the mounting frame (3). The diversion opening (35) is located directly above the diversion box (9). Guide grooves (36) are opened at both ends of the diversion opening (35).

8. A compact low-voltage distributed photovoltaic power station according to claim 7, characterized in that: A plurality of the bases (1) and mounting brackets (3) are provided, and the number of the bases (1) is the same as that of the mounting brackets (3). The bases (1) are hollow, and a U-shaped pipe (37) is arranged between two adjacent bases (1). Two ends of the U-shaped pipe (37) respectively penetrate into the corresponding bases (1). A water inlet pipe (38) and a pneumatic balance pipe (39) penetrate through the side of one of the bases (1).

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