A windproof device for a photovoltaic module with adjustable inclination and a photovoltaic power station

Abstract

This utility model discloses a windproof device for photovoltaic modules with adjustable tilt angle and a photovoltaic power station, belonging to the field of photovoltaic technology. The windproof device includes a photovoltaic support frame and photovoltaic modules installed on the support frame. The photovoltaic support frame includes a rectangular outer fixing frame. The photovoltaic modules are disposed inside the outer fixing frame, with their width sides hinged to the frame. The width sides of the module's frame are correspondingly hinged to two support rods. Electrically controlled telescopic rods are provided on both sides of the outer fixing frame, and these rods are hinged to the support rods. The telescopic rods control the photovoltaic modules to switch between power generation and windproof states through extension and retraction. In the power generation state, the photovoltaic modules are flush with the outer fixing frame; in the windproof state, they form an angle with the frame. This utility model, through adjustable tilt angle settings, significantly reduces the wind load on the power station, improving its wind resistance while ensuring power generation efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of photovoltaic technology, specifically relating to photovoltaic windproof technology. Background Technology

[0002] Currently, photovoltaic (PV) mounting systems are designed with module tilt angles ranging from 5° to 30° to achieve maximum solar power generation efficiency. Under otherwise identical conditions, a larger tilt angle results in a greater wind load shape factor, meaning the system bears a greater wind load. Therefore, wind resistance design is a key consideration in mounting system design. Common practices include reducing the spacing between columns to decrease the load on individual columns and increasing the number of expansion bolts at the column bases to resist pull-out forces from wind loads. This increases the cost of the mounting system, yet many power plants are still blown away entirely each year. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the technical problem to be solved by this utility model is to provide a windproof device for photovoltaic modules with adjustable tilt angle and a photovoltaic power station. In the case of strong winds, the tilt angle of the photovoltaic modules can be reduced, thereby reducing the wind load on the support structure.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] First, a tilt-adjustable photovoltaic module windproof device is provided, including a photovoltaic bracket and a photovoltaic module installed on the photovoltaic bracket. The photovoltaic bracket includes a rectangular outer fixing frame. The photovoltaic module is disposed inside the outer fixing frame and its frame width is hinged to the outer fixing frame on both sides. The frame width of the module is correspondingly hinged to two support rods on both sides. Electrically controlled telescopic rods are provided on both sides of the width of the outer fixing frame. The electrically controlled telescopic rods are hinged to the support rods. The electrically controlled telescopic rods control the photovoltaic module to switch between power generation and windproof states by telescoping. When the photovoltaic module is in power generation state, it is flush with the outer fixing frame. When the photovoltaic module is in windproof state, it has an angle with the outer fixing frame.

[0006] Preferably, the outer fixing frame has corresponding sliding grooves extending along its length on both sides of its width. The sliding grooves are slidably connected to sliders, which are connected to electrically controlled telescopic rods and hinged to the first end of the support rod.

[0007] Preferably, the groove is a T-groove and the slider is a T-shaped slider; and / or, the slider is provided with a hinge portion protruding from the groove, the hinge portion being hinged to the first end of the support rod.

[0008] Preferably, the outer fixing frame has an installation groove for installing the electrically controlled telescopic rod; and / or, the outer fixing frame is made of welded square steel pipe.

[0009] Preferably, a hinge is provided between the second end of the support rod and the component frame.

[0010] Preferably, the photovoltaic bracket further includes inclined beams spaced laterally, and the two side walls of the outer fixing frame are fixed to the inclined beams using pressure block assemblies.

[0011] Preferably, the pressure block assembly includes an upper pressure block, a lower pressure block, and pressure block bolts connecting the upper pressure block and the lower pressure block.

[0012] Preferably, the inclined beam is made of C-steel, with limiting flanges on both sides of the opening, and the lower pressure block has a U-shaped structure with threaded holes on the bottom wall for bolt connection to the pressure block, and the side walls are limited and matched with the limiting flanges.

[0013] Preferably, the photovoltaic module windproof device further includes a wind speed sensor, and the electrically controlled telescopic rod automatically starts when the wind speed sensor detects that the wind speed has reached a set threshold, pushing the support rod to put the photovoltaic module in a windproof state.

[0014] In addition, a photovoltaic power station is also provided, including the aforementioned photovoltaic module windproof device.

[0015] The present invention adopts the above technical solution and has the following beneficial effects:

[0016] 1. Because the electrically controlled telescopic pole switches between power generation and windproof modes for the photovoltaic (PV) modules through telescopic control, the PV modules are flush with the outer fixed frame in power generation mode, achieving the optimal tilt angle for power generation and ensuring efficiency. In windproof mode, the PV modules are at an angle to the frame, resulting in a smaller windward area and a larger gap between the modules and the frame. This allows wind to pass through the gap, reducing the wind load on the modules. Thus, the adjustable tilt angle significantly reduces the wind load on the power station, improving its wind resistance while maintaining power generation efficiency and greatly reducing the risk of the entire power station being blown away.

[0017] 2. The outer fixed frame has corresponding sliding grooves extending along its length on its inner walls on both sides. A slider is slidably connected to each groove, and the slider is connected to the push rod of the electrically controlled telescopic rod and hinged to the first end of the support rod. The sliding groove can be a T-shaped groove, and the corresponding slider is a T-shaped slider. The slider has a hinged portion protruding from the sliding groove into the inner side of the outer fixed frame to facilitate hinged connection with the first end of the support rod. Additionally, the outer fixed frame has a mounting groove for installing the electrically controlled telescopic rod, which communicates with the sliding groove, allowing the push rod to pass through and connect with the slider.

[0018] 3. The photovoltaic support also includes inclined beams spaced laterally, and the two side walls of the outer fixing frame are fixed to the inclined beams using pressure block assemblies. Furthermore, the structure of the pressure block assemblies is the same as in the prior art; however, while the prior art uses pressure block assemblies to press against the photovoltaic modules, this invention uses them to press against the outer fixing frame, thus eliminating the need to redesign the pressure block assemblies.

[0019] 4. Equipped with a wind speed sensor, the electrically controlled telescopic mast automatically activates when the sensor detects that the wind speed has reached a set threshold, pushing the support rod to put the photovoltaic modules in a windproof state. For example, when the wind speed exceeds level 10, the electrically controlled telescopic mast activates, adjusting the tilt angle of the photovoltaic modules to 0°, reducing the wind load on the power station and greatly reducing the risk of the power station being blown away; when the wind speed decreases, the electrically controlled telescopic mast resets, and the photovoltaic modules return to their original tilt angle, continuing to maintain optimal tilt angle power generation efficiency.

[0020] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0021] The utility model will be further described below with reference to the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of the structure of the photovoltaic power station involved in this utility model embodiment when the photovoltaic modules are in a windproof state;

[0023] Figure 2 This is a schematic diagram showing the relative position between the photovoltaic module and the outer fixing frame in a windproof state according to an embodiment of this utility model;

[0024] Figure 3 for Figure 2 Schematic diagram of a local structure in the middle;

[0025] Figure 4 This is a schematic diagram of the structure of the photovoltaic power station in the photovoltaic module power generation state according to the embodiments of this utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the pressure block assembly in an embodiment of this utility model;

[0027] Figure 6 This is a schematic diagram of the side pressure block assembly in an embodiment of the present invention;

[0028] Reference numerals: outer fixed frame 1, slide groove 11, photovoltaic module 2, module frame 21, electrically controlled telescopic rod 4, support rod 5, inclined beam 6, limiting flange 61, middle pressure block assembly 7, lower pressure block 71, upper pressure block 72, pressure block bolt 73, support pad 74, side pressure block assembly 8, column 9. Detailed Implementation

[0029] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.

[0030] Those skilled in the art will understand that, without conflict, the features in the following embodiments and implementations can be combined with each other.

[0031] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. For example, terms such as "upper," "lower," "lateral," and "longitudinal," which indicate orientation or positional relationship, are based solely on the orientation or positional relationship shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device / component referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] Based on background technology records, it is known that, all other things being equal, the larger the tilt angle of the photovoltaic support module, the larger the wind load shape coefficient, which means the greater the wind load the support will bear. Therefore, wind resistance design must be a key consideration when designing photovoltaic support systems. Figures 1 to 6As shown, this embodiment provides a tilt-adjustable photovoltaic module windproof device. In strong winds, the tilt angle of the photovoltaic module can be reduced, thereby decreasing the wind load on the support structure. It includes a photovoltaic support structure and photovoltaic modules 2 mounted on it. The photovoltaic support structure includes a rectangular outer fixing frame 1, which is tilted and faces the direction of sunlight, with its tilt angle corresponding to the optimal power generation tilt angle of the photovoltaic module. The photovoltaic module 2 has a rectangular structure and is vertically mounted, meaning its length is perpendicular to its horizontal direction, and the outer fixing frame is also correspondingly positioned. The photovoltaic module 2 is located inside the outer fixing frame 1, and the two sides of the module frame 21 are hinged to the two sides of the outer fixing frame 1. Additionally, the two sides of the module frame 21 are hinged to two support rods 5. Electrically controlled telescopic rods 4 are provided on both sides of the outer fixing frame 1, and these rods are hinged to the support rods 5. The telescopic rods 4 control the switching between power generation and windproof states of the photovoltaic module 2 through extension and retraction. When the photovoltaic module 2 is in power generation mode, it is flush with the outer fixed frame 1 and maintains a better power generation tilt angle. When the photovoltaic module 2 is in windproof mode, it has an angle with the outer fixed frame 1, that is, the tilt angle of the photovoltaic module is reduced, thereby reducing the wind load borne by the support.

[0034] It is understandable that there is a certain gap between the two sides of the width of the module frame 21 and the two sides of the width of the outer fixing frame 1, in order to ensure the tilt angle adjustment of the photovoltaic module 2 and to provide space for the support rod to move. Similarly, there is also a certain gap between the two sides of the length of the module frame 21 and the two sides of the length of the outer fixing frame 1.

[0035] In the above technical solution, the electrically controlled telescopic pole can switch the photovoltaic modules between power generation and wind protection modes through extension and retraction. In power generation mode, the photovoltaic modules are flush with the outer fixed frame, maintaining the optimal tilt angle for power generation and ensuring efficiency. In wind protection mode, the photovoltaic modules are at an angle to the frame, resulting in a smaller windward area and a larger gap between them. This allows wind to pass through the gap, reducing the wind load on the modules. Thus, the adjustable tilt angle significantly reduces the wind load on the power station, improving its wind resistance while maintaining power generation efficiency and greatly reducing the risk of the entire power station being blown away.

[0036] The electrically controlled telescopic rod, also known as an electric push rod, can be purchased directly from the market. It converts the rotational motion of the motor into the linear reciprocating motion of the push rod, which is hinged to the support rod. The middle sections of both sides of the module frame width are hinged to the middle sections of both sides of the outer fixed frame width; this is called the first hinge point. The two sides of the module frame width are hinged to the two support rods; this is called the second hinge point. The second hinge point is offset from the first hinge point and is located diagonally downwards from it. Therefore, when the push rod extends, it pulls the photovoltaic module through the support rod, reducing the angle between the photovoltaic module and the outer fixed frame until it is flush with the outer fixed frame. When the push rod retracts, it pushes the photovoltaic module through the support rod, increasing the angle between the photovoltaic module and the outer fixed frame until a set angle is reached. This angle can be set between 5° and 30°; for example, this set angle can be fixed at 25 degrees. Taking a 25-degree angle between the outer fixed frame and the horizontal plane as an example, the photovoltaic module is parallel to the horizontal plane, providing the best wind protection. Of course, this set angle can also be adjusted according to the wind force.

[0037] In some embodiments, the inner walls on both sides of the width of the outer fixing frame 1 are provided with corresponding sliding grooves 11 extending along the length. A slider is slidably connected to the sliding groove 11, and the slider is connected to the push rod of the electrically controlled telescopic rod 4 and hinged to the first end of the support rod. The sliding groove 11 can be a T-shaped groove, and the corresponding slider is a T-shaped slider. The slider has a hinge portion protruding from the sliding groove, i.e., protruding from the sliding groove towards the inner side of the outer fixing frame, to facilitate hinged connection with the first end of the support rod. Additionally, the outer fixing frame 1 has a mounting groove for installing the electrically controlled telescopic rod, which communicates with the sliding groove, allowing the push rod to move through and connect with the slider. Furthermore, a hinge is provided between the second end of the support rod and the component frame 21, and hinges, such as bolts or pins, are provided on both sides of the width of the component frame 21 corresponding to the sides of the width of the outer fixing frame 1. The outer fixing frame 1 can be a rectangular frame welded from square steel tubing.

[0038] In some embodiments, the photovoltaic support also includes diagonal beams 6 spaced laterally and columns 9 supporting the diagonal beams. The diagonal beams 6 are diagonally arranged, or referred to as longitudinal beams. The two side walls of the outer fixing frame 1 are fixed to the diagonal beams 6 using pressure block assemblies. The lateral spacing between two adjacent diagonal beams 6 corresponds to the width of the outer fixing frame, so that the two sides of the width of the outer fixing frame can be supported on the two adjacent diagonal beams 6. The structure of the pressure block assembly is the same as in the prior art, but in the prior art, the pressure block assembly presses against the photovoltaic module, while in this embodiment, it presses against the outer fixing frame, so there is no need to redesign the pressure block assembly. Moreover, depending on the installation position, it is divided into side pressure block assemblies 8 and middle pressure block assemblies 7. The side pressure block assemblies 8 are located on both sides of the longitudinal direction of the outer fixing frame array, fixing the outer fixing frame from the outside. The middle pressure block assemblies 7 are used to fix the outer fixing frames on both sides in the middle of two adjacent outer fixing frames laterally. The side pressure block assemblies 8 and the middle pressure block assemblies 7 have similar structures. Figure 5 Taking the intermediate pressure block assembly 7 as an example, it includes an upper pressure block 72, a lower pressure block 71, and a pressure block bolt 73 connecting the upper pressure block 72 and the lower pressure block 71. The inclined beam 6 is made of C-steel, with L-shaped limiting flanges 61 on both sides of its opening. The lower pressure block 71 has a U-shaped structure, with threaded holes on its bottom wall for connection to the pressure block bolt 73, and its side walls engaging with the limiting flanges 61. For the intermediate pressure block assembly, its upper pressure block is as follows... Figure 5 As shown, flanges are provided on both sides to clamp the outer fixing frames on both sides. For the side clamping block assembly, the upper clamping block is as follows... Figure 6 As shown, only one side needs to be provided with a flange for pressing the outer fixing frame on the side. Of course, a support pad 74 can also be provided on the inclined beam 6.

[0039] Furthermore, the photovoltaic module windproof device also includes a wind speed sensor. The electrically controlled telescopic rod 4 is equipped with a controller connected to the wind speed sensor, and a wind speed threshold is set in the controller. The electrically controlled telescopic rod 4 automatically activates when the wind speed sensor detects that the wind speed has reached the set threshold, pushing the support rod 5 to put the photovoltaic module 2 in a windproof state. For example, when the wind speed exceeds level 10, the electrically controlled telescopic rod activates, adjusting the tilt angle of the photovoltaic module to 0°, reducing the wind load on the power station and greatly reducing the risk of the power station being blown away; when the wind speed drops to the set threshold, the electrically controlled telescopic rod resets, and the photovoltaic module returns to its original tilt angle, continuing to maintain the optimal tilt angle for power generation efficiency.

[0040] The above description is merely a specific embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. Those skilled in the art should understand that the utility model includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of the utility model will be included within the scope of the claims.

Claims

1. A windproof device for tilt-adjustable photovoltaic modules, comprising a photovoltaic support frame and photovoltaic modules mounted on the photovoltaic support frame, characterized in that, The photovoltaic support includes a rectangular outer fixing frame. The photovoltaic module is located inside the outer fixing frame and is hinged to the outer fixing frame on both sides of the module's frame width. The two sides of the module's frame width are correspondingly hinged to two support rods. Electrically controlled telescopic rods are provided on both sides of the outer fixing frame width. The electrically controlled telescopic rods are hinged to the support rods. The electrically controlled telescopic rods control the photovoltaic module to switch between power generation and wind protection states by telescoping. When the photovoltaic module is in power generation state, it is flush with the outer fixing frame. When the photovoltaic module is in wind protection state, it has an angle with the outer fixing frame.

2. The windproof device for tilt-adjustable photovoltaic modules according to claim 1, characterized in that, The outer fixed frame has corresponding sliding grooves extending along its length on both sides of its width. The sliding grooves are slidably connected to sliders, which are connected to electrically controlled telescopic rods and hinged to the first end of the support rod.

3. The tilt-adjustable photovoltaic module windproof device according to claim 2, characterized in that, The slide groove is a T-shaped groove, and the slider is a T-shaped slider; and / or, the slider is provided with a hinge portion protruding from the slide groove, and the hinge portion is hinged to the first end of the support rod.

4. The windproof device for tilt-adjustable photovoltaic modules according to claim 1, characterized in that, The outer fixing frame is provided with a mounting groove for installing an electrically controlled telescopic rod; and / or, the outer fixing frame is made of welded square steel pipe.

5. The windproof device for tilt-adjustable photovoltaic modules according to claim 1, characterized in that, A hinge is provided between the second end of the support rod and the component frame.

6. The windproof device for tilt-adjustable photovoltaic modules according to claim 1, characterized in that, The photovoltaic support also includes inclined beams spaced laterally, and the two side walls of the outer fixing frame are fixed to the inclined beams by pressure block assemblies.

7. A windproof device for tilt-adjustable photovoltaic modules according to claim 6, characterized in that, The pressure block assembly includes an upper pressure block, a lower pressure block, and pressure block bolts connecting the upper pressure block and the lower pressure block.

8. A windproof device for tilt-adjustable photovoltaic modules according to claim 7, characterized in that, The inclined beam is made of C-steel, with limiting flanges on both sides of the opening. The lower pressure block has a U-shaped structure, with threaded holes on the bottom wall for bolt connection to the pressure block, and the side walls are matched with the limiting flanges for limiting.

9. A wind protection device for a pitch adjustable photovoltaic module according to claim 1, characterized in that The photovoltaic module windproof device also includes a wind speed sensor. The electrically controlled telescopic rod automatically starts when the wind speed sensor detects that the wind speed has reached a set threshold, pushing the support rod to put the photovoltaic module in a windproof state.

10. A photovoltaic power station, characterized in that, Includes the photovoltaic module windproof device as described in any one of claims 1 to 9.

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