Photovoltaic power generation support assembly for electric power grid

Abstract

The invention discloses a photovoltaic power generation support assembly for an electric power grid, and relates to the technical field of photovoltaic power generation, the photovoltaic power generation support assembly comprises a photovoltaic panel, a base, a rotating frame rotationally connected to the base and a driving assembly for driving the rotating frame to rotate, the photovoltaic panel is rotationally connected to the rotating frame through a horizontal shaft, and a cam groove is formed in the base; and a pulling block is slidably connected to the rotating frame, the bottom of the pulling block is slidably arranged in the cam groove, a connecting rod is movably hinged to the top of the pulling block, and the other end of the connecting rod is movably hinged to the photovoltaic panel. According to the technical scheme, in the process that the support assembly drives the photovoltaic panel to rotate along with the sun, the inclination angle and the orientation of the photovoltaic panel are adjusted at the same time, it is always kept that solar rays irradiate the photovoltaic panel perpendicularly, the photovoltaic panel is promoted to receive solar radiation to the maximum extent, and the solar energy utilization rate is increased. And the power generation efficiency of the photovoltaic panel is further improved.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic power generation technology, specifically to a photovoltaic power generation support assembly for power grids. Background Technology

[0002] Photovoltaic power generation technology is a technology that directly converts solar energy into electrical energy. It utilizes the photovoltaic effect at the semiconductor interface to directly convert light energy into electrical energy. Photovoltaic power generation support components are an indispensable part of photovoltaic power generation systems. Their main function is to support and fix photovoltaic panels (i.e., solar panels) to ensure that the photovoltaic system can operate stably and efficiently.

[0003] Typically, the control bracket assembly drives the photovoltaic panel to rotate with the sun. The photovoltaic panel tracks the sun from east to west, allowing the solar panel to follow the sun's path throughout the day. The photovoltaic panel can continuously face the sun to absorb solar radiation energy to the maximum extent, thereby significantly improving power generation efficiency.

[0004] Patent CN117458972B discloses a rotating photovoltaic panel support frame, including a first base, a second base fixed to the end of a central base away from the first base, a support rod rotatably connected inside the second base, a rotatably adjustable photovoltaic panel connected to the top of the support rod, a retractable assembly at the bottom of the support rod, an angle adjustment assembly at the top of the support rod, and a cleaning assembly inside the first base. Through the cooperation of the retractable assembly and the angle adjustment assembly, the illumination angle of the photovoltaic panel can be adjusted, ensuring that the photovoltaic panel is always at the optimal illumination angle.

[0005] In existing technologies such as those described above, it is difficult to simultaneously adjust the orientation and tilt angle of the photovoltaic panel during the adjustment process of the support frame driving the photovoltaic panel. In the morning and evening, the solar altitude angle (i.e., the angle between the sunlight and the ground plane) is small, while at noon, the solar altitude angle is large. Since the photovoltaic panel is difficult to adjust its tilt angle with the change of the solar altitude angle, the photovoltaic panel is unable to receive solar radiation to the maximum extent, thereby reducing the power generation efficiency of the photovoltaic panel. Summary of the Invention

[0006] The purpose of this invention is to provide a photovoltaic power generation support assembly for power grids to overcome the shortcomings of the prior art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a photovoltaic power generation support assembly for power grids, comprising a photovoltaic panel, a base, a rotating frame rotatably connected to the base, and a drive assembly for driving the rotating frame to rotate. The photovoltaic panel is rotatably connected to the rotating frame via a horizontal shaft. A cam groove is provided on the base. A pulling block is slidably connected to the rotating frame. The bottom of the pulling block is slidably disposed inside the cam groove. A connecting rod is movably hinged to the top of the pulling block. The other end of the connecting rod is movably hinged to the photovoltaic panel.

[0008] Furthermore, it also includes a cleaning assembly, which comprises: a cleaning brush plate, which is vertically slidably connected to a rotating frame; a screw, which is rotatably connected to the rotating frame, and the screw is threadedly connected to one end of the cleaning brush plate; an outer arc-shaped rack, which is coaxially fixedly disposed on the outer wall of a circular groove opened on the base; an inner arc-shaped rack, which is coaxially fixedly disposed on the inner wall of the circular groove; and a gear, which is coaxially fixedly connected to the bottom of the screw and located inside the circular groove, and the gear meshes with the outer arc-shaped rack and the inner arc-shaped rack in sequence during the movement of the circular groove.

[0009] Furthermore, a horizontal guide rail is fixedly connected to the rear side of the rotating frame, and a vertical guide rail is fixedly connected to the front side of the rotating frame. The pulling block is slidably connected to the horizontal guide rail, and the cleaning brush plate is slidably connected to the vertical guide rail.

[0010] Furthermore, the cleaning brush plate includes a lifting plate, which is slidably disposed on the front side of the photovoltaic panel. A sponge brush strip is slidably connected to the inner side wall of the lifting plate, and an elastic element is fixedly connected between the sponge brush strip and the lifting plate.

[0011] Furthermore, the photovoltaic panel includes a placement plate and a photovoltaic panel. The placement plate is rotatably connected to the rotating frame via a horizontal axis, and the photovoltaic panel is snapped into the interior of the placement plate.

[0012] Furthermore, the cam groove includes an increasing-pitch slide groove, a decreasing-pitch slide groove, and a fixed-pitch slide groove connected end to end, wherein the fixed-pitch slide groove is arranged in a semi-circular shape.

[0013] Furthermore, two abutment blocks are fixedly connected to the front side of the photovoltaic panel, and the bottom ends of the two abutment blocks are both inclined.

[0014] Furthermore, a protective rotating cylinder is rotatably connected to the bottom of the pulling block, and the pulling block is slidably connected to the cam groove through the protective rotating cylinder.

[0015] Furthermore, the drive assembly includes a drive motor, which is fixedly connected to the bottom of the base, and the output end of the drive motor passes through the side wall of the base and is fixedly connected to the rotating frame.

[0016] In the above technical solution, the photovoltaic power generation support assembly for power grids provided by the present invention controls a drive motor to drive a rotating frame to rotate. The rotating frame drives the photovoltaic panel to rotate with the sun. From morning to noon, the rotating frame drives a pulling block to rotate, causing the pulling block to slide along an increasing-spacing groove. Under the combined limiting action of the increasing-spacing groove and the transverse guide rail, the pulling block slides away from the rotating frame along the transverse guide rail. The pulling block drives the photovoltaic panel to rotate via a connecting rod. The placement plate drives the photovoltaic panel to rotate around a horizontal axis, causing the tilt angle of the photovoltaic panel to gradually decrease. From noon to evening, the rotating frame continues to drive the photovoltaic panel to rotate with the sun, and the pulling block slides along a decreasing-spacing groove. Under the combined limiting action of the decreasing-spacing groove and the transverse guide rail, the pulling block slides away from the rotating frame along the transverse guide rail. The guide rail slides towards the rotating frame, and the pulling block drives the photovoltaic panel to rotate via the connecting rod. The placement plate drives the photovoltaic panel to rotate around the horizontal axis, causing the tilt angle of the photovoltaic panel to gradually increase. This results in the solar altitude angle gradually increasing from morning to noon (the solar altitude angle gradually changes from 0 degrees to 90 degrees), and the tilt angle of the photovoltaic panel gradually decreasing (its tilt angle gradually changes from 90 degrees to 0 degrees). From noon to evening, the solar altitude angle gradually decreases (the solar altitude angle gradually changes from 90 degrees to 0 degrees), and the tilt angle of the photovoltaic panel gradually increases (its tilt angle gradually changes from 0 degrees to 90 degrees). This ensures that sunlight always shines perpendicularly onto the photovoltaic panel, maximizing the photovoltaic panel's absorption of solar radiation and thus improving the photovoltaic panel's power generation efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention; Figure 2 This is a front view structural diagram of a photovoltaic panel provided in an embodiment of the present invention; Figure 3 This is a rear view structural diagram of a photovoltaic panel provided in an embodiment of the present invention; Figure 4 This is a rear view structural diagram of the pull block provided in an embodiment of the present invention; Figure 5 This is a front view structural diagram of the pull block provided in an embodiment of the present invention; Figure 6 This is a front view structural diagram of the cleaning brush plate provided in an embodiment of the present invention; Figure 7This is a rear view structural diagram of the cleaning brush plate provided in an embodiment of the present invention; Figure 8 This is a schematic diagram of the drive motor provided in an embodiment of the present invention.

[0019] Explanation of reference numerals in the attached figures: 1. Base; 11. Rotating frame; 12. Photovoltaic panel; 2. Cam groove; 21. Pulling block; 22. Connecting rod; 31. Cleaning brush plate; 32. Screw; 33. Outer arc rack; 34. Inner arc rack; 35. Gear; 4. Horizontal shaft; 41. Horizontal guide rail; 42. Vertical guide rail; 5. Lifting plate; 51. Sponge brush strip; 52. Elastic element; 6. Placement plate; 61. Photovoltaic panel; 7. Increasing distance slide; 71. Decreasing distance slide; 72. Fixed distance slide; 8. Contact block; 9. Protective rotating cylinder; 10. Drive motor. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0021] Example 1 Please see Figure 1-8 The present invention provides a photovoltaic power generation support assembly for power grids, including a photovoltaic panel 12, a base 1, a rotating frame 11 rotatably connected to the base 1, and a drive assembly for driving the rotating frame 11 to rotate. The photovoltaic panel 12 is rotatably connected to the rotating frame 11 via a horizontal shaft 4. A cam groove 2 is provided on the base 1. A pulling block 21 is slidably connected to the rotating frame 11. The bottom of the pulling block 21 is slidably disposed inside the cam groove 2. A connecting rod 22 is movably hinged to the top of the pulling block 21. The other end of the connecting rod 22 is movably hinged to the photovoltaic panel 12.

[0022] A transverse guide rail 41 is fixedly connected to the rear side of the rotating frame 11. The pulling block 21 is slidably connected to the transverse guide rail 41. By setting the transverse guide rail 41, the pulling block 21 is limited, so that the pulling block 21 always slides back and forth along the transverse guide rail 41.

[0023] The photovoltaic panel 12 includes a placement plate 6 and a photovoltaic panel 61. The placement plate 6 is rotatably connected to the rotating frame 11 via a horizontal shaft 4. The photovoltaic panel 61 is snapped into the inside of the placement plate 6. By setting the placement plate 6 and the photovoltaic panel 61, the placement plate 6 drives the photovoltaic panel 61 on its front side to rotate during the rotation of the placement plate 6 around the horizontal shaft 4, thereby adjusting the tilt angle of the photovoltaic panel 61.

[0024] The cam groove 2 includes an increasing-pitch slide 7, a decreasing-pitch slide 71, and a fixed-pitch slide 72 connected end to end. The fixed-pitch slide 72 is semi-circular. By setting the increasing-pitch slide 7, decreasing-pitch slide 71, and fixed-pitch slide 72, from morning to noon, the increasing-pitch slide 7 adjusts the pulling block 21 to slide away from the rotating frame 11. From noon to evening, the decreasing-pitch slide 71 adjusts the pulling block 21 to slide closer to the rotating frame 11. From evening to morning, the fixed-pitch slide 72 adjusts the pulling block 21 to fix its position on the rotating frame 11.

[0025] The bottom of the pull block 21 is rotatably connected to a protective rotating cylinder 9. The pull block 21 is slidably connected to the cam groove 2 through the protective rotating cylinder 9. By setting the protective rotating cylinder 9, the pull block 21 is slidably connected to the cam groove 2 through the protective rotating cylinder 9, which reduces the frictional resistance between the pull block 21 and the cam groove 2, thereby reducing the wear of the pull block 21 and thus improving the service life of the pull block 21.

[0026] The drive assembly includes a drive motor 10, which is fixedly connected to the bottom of the base 1. The output end of the drive motor 10 passes through the side wall of the base 1 and is fixedly connected to the rotating frame 11. By setting the drive motor 10 and starting the drive motor 10, the drive motor 10 drives the rotating frame 11 to rotate on the top of the base 1 through the output end.

[0027] In the above technical solution, the photovoltaic power generation support assembly for power grids provided by the present invention, by starting the drive motor 10, the drive motor 10 drives the rotating frame 11 to rotate on the top of the base 1 through the output end. The rotating frame 11 drives the photovoltaic panel 12 to rotate through the horizontal shaft 4, so that the placement plate 6 drives the photovoltaic panel 61 on its front side to rotate with the sun. From morning to noon, the rotating frame 11 drives the pulling block 21 to rotate through the horizontal guide rail 41 on its rear side. The pulling block 21 drives the protective rotating cylinder 9 at its bottom to rotate along the increasing distance. As the slide 7 slides, the combined limiting action of the extending slide 7 and the transverse guide rail 41 causes the pulling block 21 to slide away from the rotating frame 11 along the transverse guide rail 41. The pulling block 21 drives the bottom end of the connecting rod 22 at its top to slide away from the placement plate 6. The connecting rod 22 drives the photovoltaic panel 12 to rotate around the horizontal axis 4 through its top end. The placement plate 6 drives the photovoltaic panel 61 to rotate around the horizontal axis 4, causing the tilt angle of the photovoltaic panel 61 to gradually decrease. From noon to night, the rotating frame 11 continues to drive the photovoltaic panel 61 to follow the sun. As the solar panel rotates, the pulling block 21 drives the protective rotating cylinder 9 to slide along the narrowing groove 71. Under the combined limiting action of the narrowing groove 71 and the transverse guide rail 41, the pulling block 21 slides along the transverse guide rail 41 towards the rotating frame 11. The pulling block 21 drives one end of the connecting rod 22 towards the placement plate 6, causing the other end of the connecting rod 22 to drive the placement plate 6 and the photovoltaic panel 61 to rotate around the horizontal axis 4. This causes the tilt angle of the photovoltaic panel 61 to gradually increase, resulting in a gradual increase in the solar altitude angle from morning to noon. The tilt angle of the photovoltaic panel 61 gradually decreases from 0 degrees to 90 degrees. During the period from noon to night, the solar altitude angle gradually decreases from 90 degrees to 0 degrees, and the tilt angle of the photovoltaic panel 61 gradually increases from 0 degrees to 90 degrees. This ensures that the sunlight always shines perpendicularly onto the photovoltaic panel 61, promoting the photovoltaic panel 61 to receive solar radiation to the maximum extent, thereby improving the power generation efficiency of the photovoltaic panel 61.

[0028] Example 2 Please see Figure 1-8Based on the same concept as Embodiment 1 above, this embodiment also includes a cleaning assembly, which includes: a cleaning brush 31, which is vertically slidably connected to the rotating frame 11; a screw 32, which is rotatably connected to the rotating frame 11, and the screw 32 is threadedly connected to one end of the cleaning brush 31; an outer arc-shaped rack 33, which is coaxially fixedly disposed on the outer wall of a circular groove opened on the base 1; an inner arc-shaped rack 34, which is coaxially fixedly disposed on the inner wall of the circular groove; and a gear 35, which is coaxially fixedly connected to the bottom of the screw 32 and located inside the circular groove. During the movement of the gear 35 along the circular groove, it sequentially meshes with the outer arc-shaped rack 33 and the inner arc-shaped rack 34. A vertical guide rail 42 is fixedly connected to the front side of the rotating frame 11, and the cleaning brush 31 is slidably connected to the vertical guide rail 42. The cleaning brush plate 31 includes a lifting plate 5, which is slidably disposed on the front side of the photovoltaic panel 12. A sponge brush strip 51 is slidably connected to the inner side wall of the lifting plate 5, and an elastic element 52 is fixedly connected between the sponge brush strip 51 and the lifting plate 5. Two abutment blocks 8 are fixedly connected to the front side of the photovoltaic panel 12, and the bottom ends of the two abutment blocks 8 are inclined.

[0029] In the above technical solution, the photovoltaic power generation support assembly for power grids provided by the present invention, from night to morning, continuously drives the rotating frame 11 to rotate by controlling the drive motor 10. The rotating frame 11 drives the pulling block 21 to rotate via the transverse guide rail 41. The pulling block 21 drives the protective rotating cylinder 9 to slide along the fixed-distance slide groove 72. Under the combined limiting action of the fixed-distance slide groove 72 and the transverse guide rail 41, the position of the pulling block 21 within the transverse guide rail 41 is fixed. The pulling block 21 is connected to the connecting rod 22. The photovoltaic panel 12 is positioned to ensure that the placement plate 6 and the photovoltaic panel 61 remain vertical. The rotating frame 11 drives the screw 32 on it to rotate. The screw 32 drives the gear 35 at its bottom to revolve around the axis of the base 1. The gear 35 first meshes with the outer arc-shaped rack 33. Under the meshing action of the gear 35 and the outer arc-shaped rack 33, the outer arc-shaped rack 33 drives the gear 35 to rotate in the forward direction. The gear 35 drives the screw 32 to rotate in the forward direction. Under the limiting action of the vertical guide rail 42, the screw... Screw 32 drives the cleaning brush plate 31 to move vertically downwards, and the lifting plate 5 drives the sponge brush strip 51 to move downwards, causing the sponge brush strip 51 to separate from the two contact blocks 8 on the front side of the photovoltaic panel 12, releasing the restriction on the sponge brush strip 51. The elastic element 52 pushes the sponge brush strip 51 closer to the placement plate 6, so that the sponge brush strip 51 abuts against the surface of the photovoltaic panel 61. Screw 32 drives the lifting plate 5 and the sponge brush strip 51 to move downwards. After the gear 35 separates from the outer arc-shaped rack 33, the gear 35 then engages with the inner arc-shaped rack 33. The inner arc-shaped rack 34 is meshed with the gear 35. Under the meshing action of the gear 35 and the inner arc-shaped rack 34, the inner arc-shaped rack 34 drives the gear 35 to rotate in the opposite direction. The gear 35 drives the screw 32 to rotate in the opposite direction. The screw 32 drives the lifting plate 5 and the sponge brush 51 to move upward. Under the reciprocating wiping action of the sponge brush 51, the sponge brush 51 cleans the dust on the surface of the photovoltaic panel 61, preventing the dust adhering to the surface of the photovoltaic panel 61 from blocking solar radiation, thereby improving the power generation efficiency of the photovoltaic panel 61.

[0030] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A photovoltaic power generation bracket assembly for a power grid, comprising a photovoltaic panel (12), a base (1), a rotating frame (11) rotatably connected to the base (1), and a driving assembly for driving the rotating frame (11) to rotate, characterized in that: The photovoltaic panel (12) is rotatably connected to the rotating frame (11) via a horizontal axis (4), and a cam groove (2) is provided on the base (1); A pulling block (21) is slidably connected to the rotating frame (11), the bottom of the pulling block (21) is slidably arranged inside the cam groove (2), the top of the pulling block (21) is movably hinged with a connecting rod (22), and the other end of the connecting rod (22) is movably hinged to the photovoltaic panel (12).

2. A photovoltaic power generation bracket assembly for a power grid according to claim 1, characterized in that: Also included is a cleaning component, the cleaning component comprising: A cleaning brush plate (31) vertically slidably connected to the rotating frame (11); A screw rod (32) rotatably connected to the rotating frame (11), wherein the screw rod (32) is threadably connected to one end of the cleaning brush plate (31); An outer arc-shaped rack (33) is coaxially fixedly arranged on the outer wall of a circular groove formed on the base (1); An inner arc-shaped rack (34) coaxially fixedly disposed on the inner wall of the circular groove; The gear (35) is coaxially fixedly connected to the bottom of the screw rod (32) and is located inside the circular groove. When the gear (35) moves along the circular groove, it meshes with the outer arc-shaped rack (33) and the inner arc-shaped rack (34) in sequence.

3. A photovoltaic power generation bracket assembly for a power grid according to claim 2, characterized in that: The rear side of the rotating frame (11) is fixedly connected to a transverse guide rail (41), the front side of the rotating frame (11) is fixedly connected to a vertical guide rail (42), the pulling block (21) is slidably connected to the transverse guide rail (41), and the cleaning brush plate (31) is slidably connected to the vertical guide rail (42).

4. A photovoltaic power generation bracket assembly for a power grid according to claim 2, characterized in that: The cleaning brush plate (31) comprises a lifting plate (5), the lifting plate (5) being slidably arranged on the front side of the photovoltaic panel (12), a sponge brush strip (51) being slidably connected to the inner side wall of the lifting plate (5), and an elastic element (52) being fixedly connected between the sponge brush strip (51) and the lifting plate (5).

5. A photovoltaic power generation bracket assembly for a power grid according to claim 1, characterized in that: The photovoltaic panel (12) comprises a placement plate (6) and a photovoltaic panel (61); the placement plate (6) is rotatably connected to the rotating frame (11) via a horizontal axis (4); and the photovoltaic panel (61) is clamped inside the placement plate (6).

6. A photovoltaic power generation bracket assembly for a power grid according to claim 1, characterized in that: The cam groove (2) comprises a distance increasing slide groove (7), a distance reducing slide groove (71) and a distance fixing slide groove (72) which are connected end to end, and the distance fixing slide groove (72) is arranged in a semicircular shape.

7. A photovoltaic power generation bracket assembly for a power grid according to claim 1, characterized in that: Two abutment blocks (8) are fixedly connected to the front side of the photovoltaic panel (12), and the bottom ends of the two abutment blocks (8) are both arranged in an inclined manner.

8. A photovoltaic power generation bracket assembly for a power grid according to claim 1, characterized in that: The bottom of the pulling block (21) is rotatably connected to a protective rotating cylinder (9), and the pulling block (21) is slidably connected to the cam groove (2) via the protective rotating cylinder (9).

9. A photovoltaic power generation bracket assembly for a power grid according to claim 1, characterized in that: The driving assembly comprises a driving motor (10), wherein the driving motor (10) is fixedly connected to the bottom of the base (1), and an output end of the driving motor (10) passes through a side wall of the base (1) and is fixedly connected to a rotating frame (11).

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