Photovoltaic power generation device for windy and sandy areas

Abstract

The invention relates to a photovoltaic power generation device for a windy and sandy area. The photovoltaic power generation device comprises a photovoltaic assembly, supporting devices, a front stand column, a rear stand column, a foundation and a control system, the front stand column and the rear stand column are installed on the foundation, the supporting devices are installed at the upper ends of the front stand column and the rear stand column, and the photovoltaic assembly is installed on the supporting devices; the upper end of the front stand column is movably connected with the supporting device in a rotatable mode, the lower end of the front stand column is fixedly connected with the foundation, the upper end of the rear stand column is movably connected with the supporting device in a rotatable mode, and the lower end of the rear stand column is movably connected with the foundation in a rotatable mode. Therefore, the photovoltaic module can be switched between the first state and the second state. The first state is an inclined state suitable for normal power generation of the photovoltaic module; and the second state is a vertical state suitable for the photovoltaic module to dump the surface sand dust, so that the surface sand dust is removed.

Description

Technical Field

[0001] The present invention relates to the field of photovoltaic power generation devices, in particular to a photovoltaic power generation device used in windy and sandy areas. Background Art

[0002] Photovoltaic power generation is a technology that uses the photovoltaic effect of the semiconductor interface to directly convert light energy into electrical energy. During actual installation and application, the photovoltaic panels are supported by corresponding photovoltaic brackets, and the angle of the photovoltaic panels is adjusted in real time according to the light angle so that the photovoltaic panels can fully receive light.

[0003] Deserts and other areas offer excellent locations for photovoltaic power station construction due to their long sunshine hours, low rainfall, high visibility, and low land costs. However, the perennial strong winds and sandstorms in these areas also pose significant challenges to the construction of photovoltaic power stations, primarily due to strong winds and heavy sand. Water resources are scarce in these sandy areas, making the use of water as a cleaning medium unrealistic. Therefore, there is an urgent need to develop photovoltaic power generation devices suitable for areas with strong winds and sandstorms.

[0004] Most existing photovoltaic mounting racks can only adjust the angle of the photovoltaic panel. For example, the photovoltaic bracket tracker disclosed in publication number CN219999294U has a direction adjustment mechanism. This allows the photovoltaic panel on the mounting plate to face the direction of the sun by rotating the shaft in the direction adjustment mechanism when the photovoltaic system is installed in the south or north direction, which is different from the direction of the sun's rotation. The photovoltaic bracket disclosed above can only solve the problem of solar tracking, but is not suitable for areas with strong winds and sand. First, the photovoltaic bracket has low support strength and poor stability, cannot withstand strong winds, and is easily blown over and damaged by the wind. Second, it lacks a cleaning system and cannot promptly remove sand and dust accumulated on the photovoltaic panel. Many existing photovoltaic power generation devices also have cleaning systems, but these cleaning systems basically clean by spraying water. However, in desert areas with scarce water resources, existing photovoltaic cleaning systems are not suitable.

[0005] Therefore, for photovoltaic power generation equipment in windy and sandy areas, how to solve the problems of strong wind and sand, improve the firmness of the bracket and remove the sand and dust accumulated on the photovoltaic panels, while taking into account the tracking of sunlight as much as possible, is a problem that needs to be solved at present. Summary of the Invention

[0006] In response to the above problems, the present invention proposes a photovoltaic power generation device for use in sandy areas. The power generation device can improve the firmness of the bracket and promptly remove sand and dust accumulated on the photovoltaic panel in the case of water shortage, while taking into account the tracking of sunlight as much as possible.

[0007] In order to achieve the above technical objectives, the technical solution provided by the present invention is as follows: a photovoltaic power generation device for use in windy and sandy areas includes a photovoltaic module, a support device, a front column, a rear column, a foundation, and a control system, wherein the front column and the rear column are respectively installed on the foundation, the upper ends of the front column and the rear column are installed with a support device, and the photovoltaic module is installed on the support device;

[0008] The upper end of the front column is rotatably connected to the support device, the lower end of the front column is fixedly connected to the foundation, the upper end of the rear column is rotatably connected to the support device, the lower end of the rear column is rotatably connected to the foundation, and the rear column is configured as a telescopic rod, so that the photovoltaic assembly can switch between the first state and the second state;

[0009] The first state is a small-angle state suitable for normal power generation of the photovoltaic assembly. In the first state, the tilt angle of the photovoltaic support assembly is less than 60°;

[0010] The second state is a large-angle state suitable for the photovoltaic component to tilt its surface covering. In the second state, the inclination angle of the photovoltaic support component is greater than or equal to 60° and less than or equal to 95°.

[0011] A preferred technical solution of the present invention is as follows: the control system includes a covering detection module, which detects image signals on the surface of the photovoltaic module and sends the image signals to a controller, and the controller determines the coverage status of the covering on the surface of the photovoltaic module based on the image signals; the control system determines whether the photovoltaic module is switched to the second state based on the judgment result; when the photovoltaic module is in the second state, the photovoltaic module is perpendicular to the horizon.

[0012] A better technical solution of the present invention is as follows: the upper end of the front column is pivotally hinged to the support device through a first connecting member, the upper end of the rear column is pivotally hinged to the support device through a second connecting member, and the lower end of the rear column is pivotally hinged to the base through a third connecting member.

[0013] A preferred technical solution of the present invention is as follows: the supporting device includes an oblique beam and a horizontal beam, the horizontal beam is fixedly connected above the oblique beam, and the photovoltaic assembly is fixedly connected above the horizontal beam via a single / double-sided pressing block.

[0014] A better technical solution of the present invention: the power generation device also includes an oblique support rod, the lower end of the oblique support rod is connected to the base of the lower end of the rear column, and the upper end of the oblique support rod is pivotally hinged to the support device through a fourth connecting member.

[0015] A better technical solution of the present invention is as follows: the upper end of the front column is ball-hinged with the support device through a first connecting member, the upper end of the rear column is ball-hinged with the support device through a second connecting member, the lower end of the rear column is pivotally hinged with the base through a third connecting member, and the front column is a telescopic rod.

[0016] A preferred technical solution of the present invention is that the fourth connecting piece at the upper end of the diagonal support rod and the first connecting piece at the upper end of the front pillar are the same connecting piece.

[0017] A better technical solution of the present invention: the fourth connecting piece at the upper end of the diagonal support rod is located between the first connecting piece at the upper end of the front column and the second connecting piece at the upper end of the rear column, the lower end of the diagonal support rod is pivotally hinged to the base of the lower end of the rear column through the fifth connecting piece, and the diagonal support rod is a telescopic rod.

[0018] A better technical solution of the present invention: the first connecting member, the second connecting member, the third connecting member, the fourth connecting member and the fifth connecting member have the same structure, and each includes two opposite sides and a bottom edge, and the two opposite sides are respectively provided with a through hole, and the through hole is used to install the pivot shaft, and the bottom edge is provided with a waist-shaped hole.

[0019] A better technical solution of the present invention is: the control system includes a light tracking sensor and a controller. In the first state, the light tracking sensor is used to detect the angle of light, and the controller adjusts the length of the telescopic rod according to the detection signal of the photoelectric tracking sensor, thereby adjusting the angle of the photovoltaic module.

[0020] Compared with the prior art, the advantages of the present invention are:

[0021] (1) The present invention sets the rear column as a telescopic rod, which achieves dual purposes. It can track the sunlight to adjust the angle of the photovoltaic module, and can also be adjusted to a large angle, especially a vertical state, which is sufficient to dump the sand and dust accumulated on the surface of the photovoltaic module. The switching can be achieved by simply adjusting the length of the rear column. When the rear column is shorter, it is used for power generation, and when the rear column is longer, it is used for dumping sand and dust.

[0022] (2) The bracket of the present invention adopts the synergistic effect of the front column, diagonal support rod, pull rod and rear column, and uses the stability of the triangle to improve the stability and strength of the photovoltaic bracket, which is sufficient to resist the invasion of strong winds.

[0023] (3) The present invention can set both the front and rear columns as telescopic rods. When both the front and rear columns are set as telescopic rods and the connecting parts at the upper ends are ball hinged, full-angle solar tracking can be achieved, further improving the power generation efficiency.

[0024] (4) The cover detection module of the present invention greatly improves the average accuracy of dust detection on the surface of photovoltaic modules through the improved algorithm, and is suitable for detecting dust on the surface of photovoltaic panels in complex environments, with good versatility.

[0025] (5) The mounting structure of the present invention can be improved on the existing photovoltaic bracket with fixed columns. It only needs to replace the rear column with a telescopic rod to track the sunlight. At the same time, it continues to improve on the basis of the tracking system so that the photovoltaic components can be in a vertical state to clean the sand and dust. The whole device is simple and efficient, which can reduce costs and realize multiple functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 This is a schematic diagram of the first state of the main structure of the embodiment of the present invention.

[0028] Figure 2 This is a schematic diagram of the second state of the main structure of the embodiment of the present invention.

[0029] Figure 3 This is a schematic diagram of the installation of one of the connectors in the present invention;

[0030] Figure 4-1 This is a schematic diagram of the three-dimensional structure of the connecting piece of the present invention;

[0031] Figure 4-2 is a top view of the connector of the present invention;

[0032] Figure 5 This is a schematic diagram of the installation of the crossbeam in the present invention;

[0033] Figure 6 This is a schematic diagram of the installation of a single-side pressing block in the present invention;

[0034] Figure 7-1 It is a side structural diagram of a single-side pressing block in the present invention;

[0035] Figure 7-2 It is a top view of a single-side pressing block in the present invention;

[0036] Figure 8 This is a schematic diagram of the installation of the double-sided pressing blocks in the present invention;

[0037] Figure 9-1 It is a schematic diagram of the side structure of the double-sided pressing block in the present invention;

[0038] Figure 9-2 It is a top view of the double-sided pressing block in the present invention;

[0039] Figure 10 This is a schematic diagram of the installation of a tie rod between two adjacent columns in the present invention;

[0040] Figure 11 It is a schematic diagram of the first state of the main structure of the second embodiment of the present invention.

[0041] In the figure: 1—concrete foundation, 2—front column, 3—diagonal brace, 4—rear column, 5 diagonal beam, 6 cross beam, 7 photovoltaic module, 8 single / double-sided pressure block, 9—first connecting piece, 10—second connecting piece, 11—third connecting piece, 12—fourth connecting piece, 13—fifth connecting piece, 14—through hole, 15—waist-shaped hole, 16—rotating shaft, 17—cross beam bolt, 18—pull rod. DETAILED DESCRIPTION

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, 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 part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0043] Example 1 provides a photovoltaic power generation device for use in sandy areas. Figures 1-10 , including a photovoltaic module 7, a supporting device, a front column 2, a rear column 4, a foundation 1 and a control system. The front column 2 and the rear column 4 are respectively installed on the corresponding foundation 1. The upper ends of the front column 2 and the rear column 4 are installed with supporting devices, and the photovoltaic module 7 is installed on the supporting devices; the upper end of the front column 2 is rotatably connected to the supporting device, the lower end of the front column 2 is fixedly connected to the foundation 1, the upper end of the rear column 4 is rotatably connected to the supporting device, and the lower end of the rear column 4 is rotatably connected to the foundation 1. The rear column 4 is set as a telescopic rod. The control system can control the extension and retraction of the telescopic rod, so that the photovoltaic module 7 can switch between the first state and the second state;

[0044] The first state is a small angle state suitable for the photovoltaic assembly 7 to generate electricity normally, preferably 16°-58°;

[0045] The second state is a large angle state suitable for the photovoltaic assembly 7 to tilt its surface covering, preferably 80°-95°, more preferably 90°;

[0046] In order to better understand the two states, we can give an example. For example, the angle of the first state is an inclined state, and the inclined angle is suitable for power generation. The angle of the second state is sufficient to make the covering on the surface of the photovoltaic panel (such as sand and dust) slide off, especially the vertical state.

[0047] The foundation 1 is a pre-buried steel pipe pile foundation, and the columns are ensured to be at least 150mm deep into the pre-buried casing of the foundation, which can improve the stability of the foundation. Due to the strong wind and sand in deserts and neighboring areas, the telescopic rod adopts an electric telescopic rod, which has a longer service life and lower cost than the hydraulic telescopic rod. Therefore, the telescopic rod of the present invention is preferably an electric telescopic rod.

[0048] The control system includes a cover detection module, a light-tracking sensor, and a controller for controlling the length adjustment of the telescopic rod. The cover detection module and controller work together to clean the photovoltaic panel; the light-tracking sensor and controller work together to track solar light. The control system includes a cover detection module, which includes an image acquisition component and a signal transmission component. The cover detection module uses the image acquisition component to capture images of the photovoltaic panel and transmits the captured images to the controller for image processing. The image acquisition component is installed below the glass surface of the photovoltaic panel. The controller converts the input image size to a 300×300 resolution image. The image processing object detection algorithm model consists of two main components: a base network and additional network layers. Multiple convolutional layers are generated, using multiple convolution kernels to perform convolution operations. Each layer generates a certain number of position and category predictions. The network structure performs downsampling on the feature maps to prevent loss of object information. Using a bottom-up convolution operation, each layer generates extracted features rather than images. The probability of each object within the frame is scored, and the object detection result is ultimately obtained using a non-maximum suppression algorithm. In the recognition layer, the rectangular frame position information and the target object position information of each point on the feature map are identified. That is, the loss function of the point is equal to the sum of the rectangular frame position loss and the object category loss. The recognition function of the point can be specifically expressed as formula (1):

[0049]

[0050] Among them, N is the number of samples, x is the category information of the current prediction box, c represents the prediction category information, l is the location information of the prediction box, g represents the value of the real annotation box, L conf is the category loss function, L loc is the position loss function, and the parameter α is a constant used to adjust L conf With L loc The ratio between them. conf With L loc The specific calculation formula is:

[0051]

[0052]

[0053] in, Indicates whether the i-th predicted box matches the j-th real box. If 0 means no match. A value of 1 indicates a match. represents the prediction box, represents the ground-truth box. Indicates that the predicted box i matches the true box j with respect to category p. The higher the probability prediction of p, the less loss. If there is no object in the predicted box, the higher the probability of identifying it as background, the smaller the loss. The probability is calculated based on Softmax. The greater the probability, the less loss. In addition, the target detection algorithm model also introduces an attention mechanism module, which can quickly filter and locate high-value target information from a large number of feature information images, which can effectively improve the false detection and missed detection of dust on photovoltaic surfaces. When the ideal state of the photovoltaic panel surface is completely clean, the image loss is defined as L0.

[0054] When L loc When (x,l,g)-L0>0.15, it is determined that the dust on the photovoltaic surface needs to be cleaned.

[0055] That is, the covering detection module determines whether the thickness of the covering on the surface of the photovoltaic module 7 exceeds a set threshold; based on the determination result, the controller determines whether the photovoltaic module 7 should be switched to the second state; specifically, based on the determination result, it determines whether the photovoltaic panel needs to be cleaned. This method has the advantages of simple structure, easy operation, and good cleaning effect, and can be widely applied to various types of photovoltaic panel cleaning monitoring. When the photovoltaic module 7 is in the second state, the photovoltaic module 7 is perpendicular to the horizon, that is, in a vertical state. Due to the low water content of sand and dust in deserts and neighboring areas, although the sand and dust will accumulate on the surface of the photovoltaic module, it will not adhere to it. When the photovoltaic module 7 is in the vertical state, the sand and dust on the surface can easily slide off, thereby clearing the sand and dust on the surface of the photovoltaic module 7.

[0056] The photovoltaic power generation device in Example 1 further includes connecting members, wherein the upper end of the front column 2 is pivotally connected to the support device via a first connecting member 9, the upper end of the rear column 4 is pivotally connected to the support device via a second connecting member 10, and the lower end of the rear column 4 is pivotally connected to the corresponding foundation 1 via a third connecting member 11. The photovoltaic power generation device in Example 1 further includes a diagonal brace 3, the lower end of the diagonal brace 3 is connected to the foundation 1 at the lower end of the rear column 4 via a fifth connecting member 13, and the upper end of the diagonal brace 3 is pivotally connected to the support device via a fourth connecting member 12. The fourth connecting member 12 at the upper end of the diagonal brace 3 shares a common connecting member with the first connecting member 9 at the upper end of the front column 2.

[0057] All connectors in Example 1 share the same structure, forming a symmetrical structure with two opposing sides and a base. The sides are roughly triangular in shape, each with a through hole 14 for mounting a pivot shaft 16. The base is provided with an even number of waist-shaped holes 15. The connectors are secured to the diagonal beam 5 using M10×35 bolts passing through the waist-shaped holes 15.

[0058] In Example 1, both the front columns 2 and the diagonal braces 3 are fixed lengths. The front columns 2 are made of φ60×2.5 round tubes, hot-dip galvanized with Q235B material and a thickness of 65μm. The diagonal braces 3 are made of 40×2.5 square tubes, hot-dip galvanized with Q235B material and a thickness of 65μm. This balances economy and strength. The triangular arrangement of the front columns 2 and diagonal braces 3 further strengthens the structure and helps the device withstand strong winds. Only the rear columns 4 are retractable, further reducing costs.

[0059] like Figure 10 As shown, to further enhance the structure's wind resistance, two tie rods 18 are installed between two adjacent front columns 2. These tie rods 18 are arranged in an X-shaped cross pattern and fixed between the two adjacent front columns 2, thereby preventing the front columns from tilting or tilting in the left or right direction. Two tie rods 18 are also installed between adjacent rear columns 4, also arranged in an X-shaped cross pattern. Since the rear columns 4 are telescopic rods, the tie rods 18 can be specifically positioned at the fixed length portion of the rear columns 4. The tie rods 18 are made of φ10.7 round steel, Q235B hot-dip galvanized, with a thickness of 65μm, to achieve both economical and practical performance.

[0060] A supporting device according to an embodiment includes an inclined beam 5 and a horizontal beam 6. The horizontal beam 6 is fixedly connected to the top of the inclined beam 5. The photovoltaic module 7 is fixedly connected to the top of the horizontal beam 6 via a single / double-sided pressure block 8. The horizontal beam 6 is made of U-shaped steel, model U52×41.3×10×8×2.5, Q235B hot-dip galvanized, and the hot-dip galvanizing thickness is 65μm; the inclined beam 5 is made of U-shaped steel, model U62×41.3×10×8×2.5, Q235B hot-dip galvanized, and the hot-dip galvanizing thickness is 65μm. The horizontal beam is fixed to the inclined beam via horizontal beam bolts 10, which are M10×90 bolts. Figure 6 Figure 9 shows a single-sided or double-sided clamp 8 assembly equipped with an M8 hexagon socket lock bolt, a blade nut, and a spring washer. The single-sided or double-sided clamp 8 is available in either single or double-sided versions and is made of aluminum alloy. The single-sided or double-sided clamp is secured above the crossbeam using M8×50 bolts. These clamps act as stoppers, pressing and blocking the photovoltaic module 7, thereby securing the module. The single-sided clamp 8 has a bottom edge for mounting bolts, a side edge for blocking the module, and an upper edge for pressing the top edge of the module 7. It also has a bottom support edge below the bottom edge. The double-sided clamp 8 is symmetrical, with a bottom edge for mounting bolts, two side edges for blocking the module, and two upper edges for pressing the top edge of the module 7. Whether single-sided or double-sided, when mounting and pressing the photovoltaic module 7, the bottom edge of each clamp is suspended above the crossbeam. The desired clamping force can be achieved by adjusting the bolt length.

[0061] The control system includes a light tracking sensor and a controller. In the first state, the light tracking sensor is used to detect the angle of light. The controller adjusts the length of the telescopic rod (in this embodiment, only refers to the rear column 4) according to the detection signal of the photoelectric tracking sensor, thereby adjusting the angle of the photovoltaic component 7.

[0062] Example 2, see Figure 11 The difference from the first embodiment is that the fourth connecting member 12 at the upper end of the diagonal support rod 3 is located between the first connecting member 9 at the upper end of the front column 2 and the second connecting member 10 at the upper end of the rear column 4, and the lower end of the diagonal support rod 3 is pivotally hinged to the base 1 at the bottom of the rear column 4 through the third connecting member 11. The diagonal support rod 3 is replaced by a telescopic rod. In this embodiment, the diagonal support rod 3 and the rear column 4 are both telescopic rods, and both can be deflected at an angle to help the photovoltaic module achieve a vertical state.

[0063] In Example 3, based on Example 1, the upper end of the diagonal brace 3 is fixed to the upper end of the front pillar 2 instead of being connected to a connector. For example, the upper end of the diagonal brace 3 is fixed to the rod portion of the front pillar 2 via a clamp. It should be noted that in Example 1, Example 2, and Example 3, when in the first state, the solar tracking system can only adjust the angle of the photovoltaic module in the front-to-back direction, but not in the left-to-right direction.

[0064] In Example 4, based on Example 1 or Example 2, the first connecting member 9 is replaced with a ball hinge. The upper end of the front column 2 is ball-jointed to the support device via the first connecting member 9, the upper end of the rear column 4 is ball-jointed to the support device via the second connecting member 10, and the lower end of the rear column 4 is pivotally hinged to the corresponding base 1 via the third connecting member 11. The front column 2 is replaced with a telescopic rod. In this embodiment, since the front column, rear column, and support rod are all capable of telescoping, this telescoping can occur in the following two dimensions:

[0065] The extension and retraction of the front and rear columns can adjust the angle of the photovoltaic module 7 in the front and rear directions;

[0066] The two front columns 2 in the left and right directions are extended and retracted asynchronously; and / or the two rear columns 4 in the left and right directions are extended and retracted asynchronously, so that the angle of the photovoltaic module 7 can be adjusted in the left and right directions.

[0067] In this way, the fourth embodiment can achieve full-angle solar tracking, which can further improve power generation efficiency. It should be noted that in order to achieve left-right angle adjustment in the fourth embodiment, only two front columns and two rear columns are preferably used. In contrast, in the first, second, and third embodiments, each front beam can be supported by eight front columns, and each rear beam can be supported by eight rear columns. The beam length can reach 22,400 mm, thereby reducing costs and increasing stability.

[0068] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", "front", "back", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on this solution.

[0069] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A photovoltaic power generation device for use in a sandy area, comprising a photovoltaic module (7), a supporting device, a front column (2), a rear column (4), a foundation (1) and a control system, wherein the front column (2) and the rear column (4) are respectively mounted on the corresponding foundation (1), the upper ends of the front column (2) and the rear column (4) are mounted with the supporting device, and the photovoltaic module (7) is mounted on the supporting device; and the characteristics are: The upper end of the front column (2) is movably connected to the support device in a rotatable manner, the lower end of the front column (2) is fixedly connected to the corresponding foundation (1), the upper end of the rear column (4) is movably connected to the support device in a rotatable manner, the lower end of the rear column (4) is movably connected to the corresponding foundation (1) in a rotatable manner, the rear column (4) is configured as a telescopic rod, and the control system can control the extension and retraction of the telescopic rod, so that the photovoltaic assembly can switch between the first state and the second state; The first state is a small-angle state suitable for normal power generation of the photovoltaic assembly. In the first state, the tilt angle of the photovoltaic support assembly is less than 60°; The second state is a large-angle state suitable for the photovoltaic component to tilt its surface covering. In the second state, the inclination angle of the photovoltaic support component is greater than or equal to 60° and less than or equal to 95°.

2. The photovoltaic power generation device for use in sandy areas according to claim 1, characterized in that: The control system includes a covering detection module, which detects image signals on the surface of the photovoltaic module and sends the image signals to a controller. The controller determines the coverage status of the covering on the surface of the photovoltaic module based on the image signals. The control system determines whether the photovoltaic module is switched to the second state based on the judgment result. When the photovoltaic module is in the second state, the photovoltaic module is perpendicular to the horizon.

3. The photovoltaic power generation device for use in sandy areas according to claim 1, characterized in that: The upper end of the front column (2) is pivotally connected to the support device through a first connecting member (9), the upper end of the rear column (4) is pivotally connected to the support device through a second connecting member (10), and the lower end of the rear column (4) is pivotally connected to the base through a third connecting member (11).

4. The photovoltaic power generation device for use in sandy areas according to claim 1, characterized in that: The supporting device comprises an inclined beam (5) and a cross beam (6); the cross beam (6) is fixedly connected above the inclined beam (5); and the photovoltaic assembly (7) is fixedly connected above the cross beam (6) via a single-sided / double-sided pressing block (8).

5. The photovoltaic power generation device for use in sandy areas according to claim 3, characterized in that: The power generation device further comprises an oblique support rod (3), the lower end of the oblique support rod (3) being connected to the base of the lower end of the rear column (4), and the upper end of the oblique support rod (3) being pivotally hinged to the support device via a fourth connecting member (12).

6. The photovoltaic power generation device for use in sandy areas according to claim 3, characterized in that: The upper end of the front column (2) is ball-jointed to the support device via a first connecting member (10), the upper end of the rear column (4) is ball-jointed to the support device via a second connecting member (11), the lower end of the rear column (4) is pivotally hinged to the base via a third connecting member (11), and the front column (2) is a telescopic rod.

7. The photovoltaic power generation device for use in sandy areas according to claim 5, characterized in that: The fourth connecting piece (12) at the upper end of the diagonal support rod (3) and the first connecting piece (9) at the upper end of the front pillar (3) are the same connecting piece.

8. The photovoltaic power generation device for use in sandy areas according to claim 5, characterized in that: The fourth connecting member (12) at the upper end of the diagonal support rod (3) is located between the first connecting member (9) at the upper end of the front column (3) and the second connecting member (10) at the upper end of the rear column (4); the lower end of the diagonal support rod (3) is pivotally hinged to the base of the lower end of the rear column (4) through the fifth connecting member (13); and the diagonal support rod (3) is a telescopic rod.

9. The photovoltaic power generation device for use in sandy areas according to claim 8, characterized in that: The first connecting member (9), the second connecting member (10), the third connecting member (11), the fourth connecting member (12) and the fifth connecting member (13) have the same structure and each includes two opposite side edges and a bottom edge. The two opposite side edges are respectively provided with a through hole (14), the through hole (14) is used to install the pivot shaft, and the bottom edge is provided with a waist-shaped hole (15).

10. A photovoltaic power generation device for use in sandy areas according to any one of claims 1 to 9, characterized in that: The control system includes a light tracking sensor and a controller. In the first state, the light tracking sensor is used to detect the angle of light, and the controller adjusts the length of the telescopic rod according to the detection signal of the photoelectric tracking sensor, thereby adjusting the angle of the photovoltaic component.

Images