Dynamic wind-resistant photovoltaic system

Abstract

According to the dynamic wind-resistant photovoltaic system provided by the invention, the photovoltaic panel is mounted on the bracket in a non-fixed manner, and the photovoltaic panel can freely swing when encountering strong wind, so that the windward area of the photovoltaic panel is adjusted, the wind passing channel is expanded, and the direct impact of wind power on the photovoltaic panel is reduced; the photovoltaic panel is further provided with a buffer mechanism, the buffer mechanism can effectively absorb and slow down the swing amplitude and speed of the photovoltaic panel through the elasticity of the buffer mechanism, so that the photovoltaic panel is protected, and the photovoltaic panel is automatically reset to a relatively static state facing the sky after strong wind. According to the invention, the technical defects of static wind resistance in the prior art are overcome, a new technical route of dynamic wind resistance is developed, the wind resistance of the system is reduced, and an extremely strong wind resistance effect of the system is obtained.

Description

Technical Field

[0001] The present application belongs to the technical field of wind-resistant photovoltaic power generation, and specifically relates to a dynamic wind-resistant photovoltaic system. Background Art

[0002] Tongwei Solar Energy (Hefei) Co., Ltd. has obtained a utility model patent for "a solar photovoltaic module bracket for fish-light complementation (CN204498056U)". Figure 1 As shown in the figure, it is a photovoltaic support system with columns, beams and photovoltaic panels. The applicant has found that the patent and many other similar prior arts have a common technical point: using a firm photovoltaic support to stabilize the photovoltaic panels and using static photovoltaic panels to resist wind attacks. In a nutshell, the prior art adopts a static wind resistance technical route.

[0003] When investigating the application of the above-mentioned static wind-resistant technology, the applicant found that a building located in Sanjiang Town, Meilan District, Haikou City, Hainan Province, which was built four months ago, Figure 1 The existing technical solution shown in the figure has an installed capacity of 100 megawatts and covers an area of ​​1,663 mu. A certain flexible photovoltaic bracket fishery photovoltaic complementary demonstration project was completely destroyed in the 2024 Typhoon No. 11 (Capricorn Typhoon), causing economic losses of more than 400 million yuan. It can be seen that the current technical route of static wind resistance and the design concept of using stationary photovoltaic panels to resist strong winds have been severely challenged by super typhoons. Summary of the invention

[0004] The purpose of this application is to provide a dynamic wind-resistant photovoltaic system, in order to achieve the technical effect of resisting super typhoons and open up a new technical route for dynamic wind resistance.

[0005] In order to achieve the above-mentioned purpose of the invention, the present application proposes a dynamic wind-resistant photovoltaic system which is different from the current static wind-resistant technical route.

[0006] The present application provides a dynamic wind-resistant photovoltaic system, comprising a photovoltaic support with columns and beams and a photovoltaic (battery) panel, characterized in that: ① The photovoltaic panel is installed on the photovoltaic bracket through a non-fixed installation structure. The non-fixed installation structure allows the photovoltaic panel to swing freely relative to the photovoltaic bracket when encountering strong winds. In this way, the windward area of ​​the photovoltaic panel is dynamically adjusted and the wind passage is expanded, thereby effectively reducing the direct impact of wind on the photovoltaic panel and improving the wind resistance of the entire photovoltaic system. ② In the absence of wind or when the wind is not strong, the photovoltaic panels (always) remain relatively still facing the sky, receiving sunlight at the (optimal inclination angle) to generate electricity; ③ The photovoltaic panel is equipped with at least one buffer mechanism, which includes but is not limited to a spring mechanism. The buffer mechanism is used to effectively absorb and slow down the swing amplitude and (acceleration) of the photovoltaic panel caused by wind force through its elasticity when encountering strong wind conditions, thereby protecting the photovoltaic panel from excessive stress damage caused by violent swinging, and automatically resetting the photovoltaic panel to a relatively static state facing the sky after the strong wind.

[0007] It should be noted that the above-mentioned "buffer mechanism" refers to a design used to reduce or absorb the impact of external forces (such as wind) on photovoltaic panels, protect the structural safety of photovoltaic panels and maintain their power generation.

[0008] It should also be noted that when the tension is small, the spring remains unchanged, but when the tension exceeds a certain value, the spring begins to stretch. This specific tension value is usually called the critical tension or yield point of the spring; when the tension is large, the maximum length to which the spring can stretch is the maximum length L of the spring. After adopting the above-mentioned "buffer mechanism", when the wind is not strong, the tension of the photovoltaic panel swinging is less than the yield point of the spring and cannot pull the spring. Therefore, the spring can continue to maintain the photovoltaic panel facing the sky in a relatively static state; when strong winds come, the tension of the photovoltaic panel swinging is greater than the yield point of the spring and can pull the spring, so the photovoltaic panel cannot maintain a relatively static state facing the sky, which will inevitably cause the photovoltaic panel to swing with the strong wind to buffer the wind.

[0009] Preferably, the dynamic wind-resistant photovoltaic system is characterized in that: the buffer mechanism is connected to both the swingable photovoltaic panel and the fixed photovoltaic bracket, so as to limit the swing amplitude of the photovoltaic panel and slow down the swing (acceleration) of the photovoltaic panel; or, one end of the spring (for example, through a pull rod) is connected to the swingable photovoltaic panel, and the other end is connected to the fixed photovoltaic bracket, so as to limit the swing amplitude of the photovoltaic panel and slow down the swing (acceleration) of the photovoltaic panel.

[0010] Preferably, the dynamic wind-resistant photovoltaic system is characterized in that the photovoltaic panel is non-fixedly mounted on the crossbeam in the photovoltaic support, including but not limited to hinge mounting and shaft mounting, so that the photovoltaic panel can swing around the (cross) beam. The "non-fixed mounting" mentioned here means that the photovoltaic panel can swing with the wind within a certain range relative to the photovoltaic support, rather than being completely fixed.

[0011] Preferably, the dynamic wind-resistant photovoltaic system is characterized in that the photovoltaic panel is mounted on a crossbeam in the photovoltaic bracket, and the crossbeam is mounted on the photovoltaic bracket in a rotating shaft manner so that the photovoltaic panel and the crossbeam swing around the axis together.

[0012] Preferably, the dynamic wind-resistant photovoltaic system is characterized in that the photovoltaic panel is hung on the photovoltaic bracket by multiple spring hooks around the photovoltaic panel so that the photovoltaic panel can shake freely.

[0013] Preferably, the dynamic wind-resistant photovoltaic system is characterized in that: one end of the spring is connected to the swingable photovoltaic panel through a pull rod, and the other end is connected to a fixed photovoltaic bracket; the ratio of the rod length B to the panel width D is B / D ≥ 0.5 or 1 or 2 or 3 or 4 or 5 or 10, so that a cheap spring with a small yield point can be used to maintain the photovoltaic panel in a relatively static state facing the sky; the ratio of the rod length B to the maximum length L of the spring is B / L ≥ 1.5 or 3 or 6, so that the swing amplitude of the photovoltaic panel is limited to a smaller range. The longer the rod length B, the greater the B / D value and the greater the torque, and the easier it is to stabilize the photovoltaic panel. Studies have shown that the best rod length B is 1-2m; the long side direction of the photovoltaic panel is parallel to the axis of the beam.

[0014] Preferably, the dynamic wind-resistant photovoltaic system is characterized in that: there is a certain distance K between two adjacent photovoltaic panels, and the best distance K is 0.05D-1D, so that a spacious wind passage is formed between the two adjacent photovoltaic panels, thereby reducing the wind resistance of the photovoltaic system.

[0015] Preferably, the dynamic wind-resistant photovoltaic system is characterized in that the area of ​​the photovoltaic panel on one side of the beam is larger than the area of ​​the other side (photovoltaic panel) to form an asymmetric structure and ensure that the photovoltaic panel will inevitably sway with the wind.

[0016] Preferably, the dynamic wind-resistant photovoltaic system is characterized in that: the photovoltaic panel is also equipped with an overload release device; in the case of no wind or weak wind conditions, the overload release device is used to restrict the photovoltaic panel to a relatively static state facing the sky (at all times); in the case of strong wind conditions, the photovoltaic panel is released and the spring takes over to restrict the swing amplitude and acceleration (of the photovoltaic panel).

[0017] Preferably, the dynamic wind-resistant photovoltaic system is characterized in that: the overload release device includes a limiting permanent magnet, and in the case of no wind or weak wind conditions, the photovoltaic panel is attracted by the limiting permanent magnet and is (always) restricted to a relatively static state facing the sky; in the case of strong wind conditions, the pulling force of the photovoltaic panel (wanting to swing) (will) break free from the magnetic restriction, and the spring will take over to limit the swing amplitude and (acceleration) of the (photovoltaic panel).

[0018] Preferably, the dynamic wind-resistant photovoltaic system is characterized in that: the overload release device includes a limit bolt and an electric device thereof, and in the absence of wind or weak wind conditions, the photovoltaic panel is bolted by the limit bolt to confine it to a relatively static normal state facing the sky; in the event of strong wind conditions, the electric device is started to remove the limit bolt, so that the photovoltaic panel is freed from the restriction, and the spring takes over to limit the swing amplitude and acceleration (of the photovoltaic panel).

[0019] Preferably, the dynamic wind-resistant photovoltaic system is characterized in that: the overload release device includes a limit fuse rope and an electric heating element thereof; in the absence of wind or weak wind conditions, the photovoltaic panel is tied up by the limit fuse rope to confine it to a relatively static state facing the sky; in the event of strong wind conditions, the electric heating element is turned on to heat the limit fuse rope, causing the rope to melt, releasing the photovoltaic panel from the restriction, and the spring takes over to limit the swing amplitude and (acceleration) acceleration (of the photovoltaic panel).

[0020] Preferably, the dynamic wind-resistant photovoltaic system is characterized in that: the overload release device includes a limited overload self-breaking rope, and in the case of no wind or weak wind conditions, the photovoltaic panel is tied up by the limited overload self-breaking rope to confine it to a relatively static state facing the sky; in the case of strong wind conditions, the pulling force of the photovoltaic panel (wanting to swing) (will) break the limited overload self-breaking rope, and the spring will take over to limit the swing amplitude and (acceleration) of the (photovoltaic panel).

[0021] Preferably, the dynamic wind-resistant photovoltaic system is characterized in that: the overload release device includes a limiting weight, and in the absence of wind or weak wind conditions, the photovoltaic panel is pressed down (including pulling, etc.) by the limiting weight to confine it to a relatively static normal state facing the sky; in the event of strong wind conditions, the pulling force of the photovoltaic panel pulls up (or pries up, etc.) the limiting weight, and the spring takes over to limit the swing amplitude and (acceleration) acceleration of the photovoltaic panel.

[0022] The beams described in this application generally refer to horizontal beams or inclined beams with a small inclination angle (for example, less than +15° at the local latitude), including flexible ropes, flexible steel ropes, rigid rods, rigid tubes, rigid profiles, etc.

[0023] The pull rod described in the present application includes flexible wire materials such as steel wire, iron wire, rope, etc., and also includes rigid wire materials such as aluminum profiles, angle irons, steel pipes, sticks, etc.

[0024] The spring described in this application generally refers to an object with elasticity, including rubber bands, elastic bands, etc.

[0025] The overload release device described in this application is a commonly used protection device, which is used to automatically release when the force exceeds the set value to protect the equipment or system from damage due to excessive pressure or load. Common types include mechanical overload protectors: using mechanical springs or lever mechanisms, when the load exceeds the set value, the device will tilt or disengage, usually used in industrial machinery, conveying equipment, etc.; overload clutch: when the set torque or force exceeds the range, the clutch will disengage to protect the drive system; overload protection switch: the load is detected by electronic or mechanical means, once it exceeds the set value, the switch will cut off the circuit or trigger an alarm; hydraulic or pneumatic overload valve: in a hydraulic or pneumatic system, when the pressure exceeds the set value, the valve will open to release the pressure to protect the system components from damage. In specific implementation, these ready-made overload release devices can be selected and used according to the specific situation, and will not be repeated here.

[0026] Compared with the prior art, the present application has the following beneficial technical effects.

[0027] First, using movement to control movement, strong wind resistance: This application is attached Figure 6 The innovative implementation scheme of "dynamic wind resistance" shown here is different from the current "static wind resistance" technical route and has passed the actual test of Super Typhoon Makar No. 11 in 2024. Analysis shows that the "dynamic wind resistance" of this application adopts the strategy of treating movement with movement, while the "static wind resistance" of the prior art adopts the strategy of treating movement with static. The two have completely different ideas and the technical effects are in stark contrast.

[0028] Second, there is a wind channel and the wind resistance is small: This application advocates that a certain distance K be opened between two adjacent photovoltaic panels to form a smooth wind channel between the two adjacent photovoltaic panels, thereby reducing the wind resistance of the photovoltaic system. Compared with the current solution that the two adjacent photovoltaic panels are closely connected without leaving any gaps, the technical measure of leaving a wind channel in this application has a small wind resistance and does not increase the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The background technology "A solar photovoltaic component support for fish-light complementation (CN204498056U)" in the specification drawing is " Figure 1 ”.

[0030] Figure 2 This is a structural schematic diagram of the dynamic wind-resistant photovoltaic system of the present application (Example 1).

[0031] Figure 3 for Figure 2 Schematic diagram of the positional relationship between the spring, limit fuse rope and electric heating element.

[0032] Figure 4 for Figure 3 Schematic diagram of the structural relationship between the limit fuse rope and the electric heating element position.

[0033] Figure 5 This is a schematic diagram of the positional relationship structure of the photovoltaic panels, beams, stabilizer bars, pull rods, limit fuse ropes, etc. in the dynamic wind-resistant photovoltaic system of the present application (Example 2).

[0034] Figure 6 for Figure 5 A side view schematic diagram of a device without using a limit fuse rope.

[0035] Figure 7 This is a side view schematic diagram of a position-limiting weight used in the present application (Example 3).

[0036] Figure 8 This is a side view schematic diagram of a positioning permanent magnet used in the present application (Example 4).

[0037] Fig. 9 Another structural schematic diagram of the dynamic wind-resistant photovoltaic system of the present application (Example 5).

[0038] Fig.10 This is another structural schematic diagram of the dynamic wind-resistant photovoltaic system of the present application (Example 6).

[0039] Fig.11 This is a schematic diagram of the position relationship between a beam and a photovoltaic panel.

[0040] Fig.12 A schematic diagram of the positional relationship between the photovoltaic panel, the spring, the beam and the fixing rod.

[0041] Fig.13 A schematic diagram of the positional relationship between a photovoltaic panel and adjacent photovoltaic panels.

[0042] Fig.14 A schematic diagram of a photovoltaic panel being hung on a photovoltaic bracket using multiple spring hooks around the photovoltaic panel.

[0043] Explanation of the accompanying figures: 1-column, 2-spring, 3-photovoltaic panel, 4-pull rod, 5-fixed rod, 6-cross beam, 7-limit fuse rope, 8-electric heating element, 9-electric connecting wire, 10-saddle, 11-limit bolt, 12-electric device, 13-wind sensor, 14-limit permanent magnet, 15-overload self-breaking rope (for limiting), 16-crowbar, 17-weight, 18-fulcrum. DETAILED DESCRIPTION

[0044] In order to make the technical means, creative features, objectives and effects achieved by this application easy to understand, this application is further explained below in conjunction with specific implementation methods.

[0045] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present application and simplifying the description. They 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 the present application.

[0046] It should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", "connectivity", etc. should be understood in a broad sense. For example, "connection" can mean electrical connection or direct connection. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0047] Embodiment 1.

[0048] like Figure 2 As shown, a photovoltaic support consisting of a column 1, a crossbeam 6, and a fixing rod 5 is assembled on the ground.

[0049] On the crossbeam 6 of the photovoltaic support, photovoltaic panels 3 are mounted at a certain distance K.

[0050] A pull rod 4 is installed at the upper and lower ends of the photovoltaic panel 3, and a spring 2 is connected to the lower end of the pull rod 4. The photovoltaic panel 3 is pulled on the fixed rod 5 through the spring 2 and the pull rod 4, so that the photovoltaic panel 3 is set on the photovoltaic bracket through a non-fixed installation structure (such as a bearing structure, a riding structure, a hinge structure, etc.). The non-fixed installation structure allows the photovoltaic panel 3 to swing freely relative to the photovoltaic bracket when encountering strong winds; in this way, the windward area of ​​the photovoltaic panel 3 is dynamically adjusted and the wind passage is expanded, thereby effectively reducing the direct impact of wind on the photovoltaic panel 3 and improving the wind resistance of the entire photovoltaic system. In this way, under the condition of no wind or weak wind, the photovoltaic panel 3 will maintain a relatively static state (with the best inclination angle) facing the sky to receive sunlight for power generation.

[0051] In the previous step, the pull rod 4, the fixing rod 5, and the spring 2 constitute a buffer mechanism, which is used to effectively absorb and slow down the swing amplitude and speed of the photovoltaic panel 3 caused by wind force through its elasticity when encountering strong wind conditions, thereby protecting the photovoltaic panel 3 from excessive stress damage caused by violent swinging, and automatically resetting the photovoltaic panel 3 to a relatively static normal state facing the sky after the strong wind.

[0052] It is desirable that Figure 3 , Figure 4As shown, a limit fuse (plastic) rope 7 with a melting point of 150 degrees is inserted into the spring 2, and the limit fuse rope 7 is tied to an electric heating element 8 such as a heating wire, and then the heating wire is tied to the fixing rod 5. In this way, in the period of no wind or weak wind, the limit fuse rope 7 can play a limiting role and limit the photovoltaic panel 3 to a relatively static state (with the best inclination angle) facing the sky to receive sunlight for power generation. Finally, each heating wire is connected to the main control room with a wire.

[0053] In this way, according to the weather forecast, before a strong typhoon hits, the staff in the main control room can close the power switch to make the heating wire heat up and melt the limit fuse rope 7, so that the photovoltaic panel 3 can swing freely relative to the photovoltaic bracket; in this way, the windward area of ​​the photovoltaic panel 3 is dynamically adjusted and the wind passage is expanded, thereby effectively reducing the direct impact of wind on the photovoltaic panel 3 and improving the wind resistance of the entire photovoltaic system.

[0054] The disadvantage of the above manual closing measure is that after the typhoon, a new limit fuse rope 7 needs to be manually tied. Although the rope tying work is very cumbersome, strong typhoons usually occur once every 10 years, so the rope tying work is also not frequent.

[0055] The above-mentioned limit fuse rope 7 can be made of heat-meltable polymers such as polypropylene and polypropylene. The application range of the fuse rope 7 is wide, including but not limited to book binding, plastic product repair, and fuse connection of wires and cables.

[0056] Embodiment 2.

[0057] like Figure 5 As shown, a photovoltaic support including a crossbeam 6 and a fixing rod 5 is assembled on the water surface.

[0058] On the beam 6 of the photovoltaic support, photovoltaic panels 3 are mounted at a certain distance K. It is best that the long side of the photovoltaic panel 3 is parallel to the axial direction of the beam 6. In other words, it is best that the wide side of the photovoltaic panel 3 is perpendicular to the axial direction of the beam 6 to reduce the stress on the photovoltaic panel 3 caused by wind.

[0059] A pull rod 4 is installed on the left and right sides of the photovoltaic panel 3, and a spring 2 is connected to the lower end of the pull rod 4. The photovoltaic panel 3 is pulled on the fixed rod 5 through the spring 2 and the pull rod 4, so that the photovoltaic panel 3 is set on the photovoltaic bracket through a non-fixed installation structure (such as a bearing structure, a riding structure, a hinge structure, etc.). The non-fixed installation structure allows the photovoltaic panel 3 to swing freely relative to the photovoltaic bracket when encountering strong winds; in this way, the windward area of ​​the photovoltaic panel 3 is dynamically adjusted and the wind passage is expanded, thereby effectively reducing the direct impact of wind on the photovoltaic panel 3 and improving the wind resistance of the entire photovoltaic system. In this way, under the condition of no wind or weak wind, the photovoltaic panel 3 will (always) maintain a relatively static state (with the best inclination angle) facing the sky to receive sunlight for power generation.

[0060] In the previous step, the pull rod 4, the fixing rod 5, and the spring 2 constitute a buffer mechanism, which is used to effectively absorb and slow down the swing amplitude and speed of the photovoltaic panel 3 caused by wind force through its elasticity when encountering strong wind conditions, thereby protecting the photovoltaic panel 3 from excessive stress damage caused by violent swinging, and automatically resetting the photovoltaic panel 3 to a relatively static normal state facing the sky after the strong wind.

[0061] It is desirable to put an overload self-breaking rope 15 (for position limiting) into the spring 2, and tie the overload self-breaking rope 15 (for position limiting) to the fixed rod 5. In this way, in the period of no wind or weak wind, the overload self-breaking rope 15 can play a limiting role, and the photovoltaic panel 3 can be motionlessly limited to the relative static state (at the optimal inclination angle) facing the sky (always) to receive sunlight for power generation.

[0062] In this way, when a strong typhoon strikes, the photovoltaic panel 3 and its pull rod 4 will break the (limiting) overload self-breaking rope 15, allowing the photovoltaic panel 3 to swing freely relative to the photovoltaic bracket; in this way, the windward area of ​​the photovoltaic panel 3 is dynamically adjusted and the wind passage is expanded, thereby effectively reducing the direct impact of wind on the photovoltaic panel 3 and improving the wind resistance of the entire photovoltaic system.

[0063] The breaking strength of the overload self-breaking rope 15 (for limiting) can be selected from various suitable specifications of easy-to-break ropes such as 1kg, 3kg, 5kg, 10kg, 15kg, etc. The specific specifications for use can be selected based on the board width D, board length C, rod length B, wind resistance level test, and can also be selected based on empirical values.

[0064] Best as Figure 6As shown, the photovoltaic panel 3 is mounted on the same crossbeam 6 through the movable saddle 10, one end of the pull rod 4 is fixed on the photovoltaic panel 3, and the other end is fixed on the fixed rod 5, and the photovoltaic panel 3 is pulled by the pull rod 4 and the spring 2 with a large yield point (tension), so that the photovoltaic panel 3 (always) remains in a static state facing the sky, so that when strong wind blows, each can swing around the crossbeam 6. In this way, the windward area of ​​the photovoltaic panel 3 is dynamically adjusted and the wind passage is expanded, thereby effectively reducing the direct impact of wind on the photovoltaic panel 3 and improving the wind resistance of the entire photovoltaic system.

[0065] The spring 2 with a large yield point (tension) can be selected from springs 2 with various suitable specifications such as 1kg, 3kg, 5kg, 10kg, and 15kg. The specific specifications can be selected based on the board width D, board length C, rod length B, wind resistance level test, and can also be selected based on experience. In this way, there is no need to carry out the tying work in the first embodiment, thereby avoiding the trouble of tying.

[0066] It is also preferred that the ratio of the length B of the tie rod 4 to the width D of the photovoltaic panel 3 is B / D ≥ 0.5 or 1 or 2 or 3 or 4 or 5 or 10; the ratio of the length B to the maximum length L of the spring is B / L ≥ 1.5 or 3 or 6, so as to limit the swing amplitude of the photovoltaic panel to a smaller range. This is because the longer the tie rod 4 is, the greater the B / D is, the easier it is to play the role of the tie rod and stabilize the photovoltaic panel 3 with a small tension. The length B of the tie rod 4 is preferably 1-2m.

[0067] It is also preferred that Fig.13 As shown, in the dynamic wind-resistant photovoltaic system of the present application, the photovoltaic panel 3 is spaced apart from the surrounding photovoltaic panels 3 by a certain distance K to form a more spacious wind passage, thereby reducing the wind resistance of the photovoltaic system.

[0068] It is also preferred that Fig.11 As shown, in the dynamic wind-resistant photovoltaic system of the present application, the area of ​​the photovoltaic panel 3 on one side of the beam 6 is larger than that on the other side to form an asymmetric structure, so as to ensure that the photovoltaic panel 3 will inevitably sway with the wind, and the side with a smaller area can also approach zero area. On the contrary, if the areas of the photovoltaic panels 3 on both sides of the beam 6 are equal, a "static wind-resistant" situation may be formed at a certain moment, which may easily cause the photovoltaic panel 3 to be damaged due to excessive stress at the moment.

[0069] It is also preferred that Fig.12 As shown, the photovoltaic panel 3 is pulled on the crossbeam 6 and fixed rod 5 by the spring 2, so that the photovoltaic panel 3 (always) remains in a static state facing the sky, so that when strong wind blows, each can swing around the crossbeam 6 and fixed rod 5. In this way, the windward area of ​​the photovoltaic panel 3 is dynamically adjusted and the wind passage is expanded, thereby effectively reducing the direct impact of wind on the photovoltaic panel 3 and improving the wind resistance performance of the entire photovoltaic system.

[0070] It is also preferred that Fig.14 As shown, the photovoltaic panel 3 is hooked on the photovoltaic support with multiple springs 2 around it, so that the photovoltaic panel 3 can swing freely with the wind, including up and down fluctuations.

[0071] Embodiment three.

[0072] like Figure 7 As shown, referring to the above-mentioned embodiment 2, the overload release device includes a limiting weight 17. Under conditions of no wind or weak wind, the limiting weight 17 is used to press the photovoltaic panel 3 (including various pulling methods such as pulling) through a crowbar 16 with one end connected to a fulcrum 18 and the other end connected to a pull rod 4, and to limit it to a relatively static state facing the sky; under strong wind conditions, the pulling force of the photovoltaic panel 3 pulls up (including various moving methods such as prying up and pushing away) the limiting weight 17 (causing it to roll down), and the spring 2 takes over to limit the swing amplitude and speed of the photovoltaic panel 3; in this way, the windward area of ​​the photovoltaic panel 3 is dynamically adjusted and the wind passage is expanded, thereby effectively reducing the direct impact of wind on the photovoltaic panel 3 and improving the wind resistance of the entire photovoltaic system.

[0073] The weight of the above-mentioned limit weight 17 can be selected from various suitable specifications such as 1kg, 3kg, 5kg, 10kg, 15kg, etc. The specific specifications can be selected based on the board width D, board length C, rod length B, wind resistance level test, and can also be selected based on empirical values.

[0074] Embodiment 4.

[0075] like Figure 8 As shown, referring to the above-mentioned embodiment 3, a set of limiting permanent magnets 14 are connected in parallel beside the spring 2. In this way, in the period of no wind or weak wind, the limiting permanent magnets 14 can play a limiting role and limit the photovoltaic panel 3 to a relatively static state (with the best inclination angle) facing the sky (all the time) without moving to receive sunlight for power generation.

[0076] When a strong typhoon hits, the photovoltaic panel 3 and its pull rod 4 will break free from the limiting permanent magnet 14, allowing the photovoltaic panel 3 to swing freely relative to the photovoltaic bracket; in this way, the windward area of ​​the photovoltaic panel 3 is dynamically adjusted and the wind passage is expanded, thereby effectively reducing the direct impact of wind on the photovoltaic panel 3 and improving the wind resistance of the entire photovoltaic system.

[0077] The suction strength (also called breaking free force) of the above-mentioned limiting permanent magnet 14 can be selected from various suitable specifications of limiting permanent magnets 14 such as 1kg, 3kg, 5kg, 10kg, 15kg, etc. The specific specifications can be selected based on the board width D, board length C, rod length B, and wind resistance level tests, and can also be selected based on empirical values.

[0078] Embodiment five.

[0079] like Fig. 9 As shown, referring to the above examples 1 to 4, the fixed rod 5 is changed into a rotatable shaft, a limit bolt 11 is installed on the rotating shaft, and the rotating shaft is driven by an electric device 12 so that the limit bolt 11 blocks each photovoltaic panel 3.

[0080] Preferably, the photovoltaic panel 3 is pulled on the rotating shaft by a spring 2 .

[0081] It is desirable to adopt common technical measures such as a wind intelligent monitoring system with a wind sensor 13 and remote control to intelligently manage and control overload release devices such as the limit bolt 11, so that the overload release device can be opened in time under extreme weather conditions to restore the freedom of the photovoltaic panel 3, so that it can swing with strong winds to reduce wind resistance and damage risks. The intelligent overload release device is an intelligent electric control system composed of components such as a motor, an electromagnet, and an electronic lock.

[0082] During normal times (i.e. when there is no wind or the wind is not strong), the photovoltaic panel 3 is blocked at a preset inclination angle φ by a stop bolt 11 (equivalent to a lock tongue) to prevent the photovoltaic panel 3 from turbulent with a small wind and maintain the photovoltaic panel 3 in a stable state, so as to facilitate efficient and stable power generation. When a strong wind comes (e.g. a wind of level 12 or above), the intelligent overload release device or manual operation can open the switch, rotate the stop bolt 11 through the electric device 12, release the photovoltaic panel 3, and allow it to sway with the strong wind. In this way, the windward area of ​​the photovoltaic panel 3 is dynamically adjusted and the wind passage is expanded, thereby effectively reducing the direct impact of wind on the photovoltaic panel 3 and improving the wind resistance of the entire photovoltaic system.

[0083] Embodiment six.

[0084] like Fig.10 As shown, a photovoltaic support consisting of a column 1 and a beam 6 is assembled on the ground. The photovoltaic panel 3 is installed on the beam 6 in the photovoltaic support, and the beam 6 is installed on the photovoltaic support in a rotating shaft manner, so that the photovoltaic panel 3 and the beam 6 swing around the axis together.

[0085] Photovoltaic panels 3 spaced at a certain distance K are fixed on the crossbeams 6 of the photovoltaic support.

[0086] The crossbeam 6 is used as a rotating shaft so that it can rotate relative to the column 1. A pull rod 4 is installed at one end of the rotating shaft. A spring 2 is connected to each end of the pull rod 4. The pull rod 4 and the spring 2 with a large yield point (tension) are pulled on the column 1, so that the photovoltaic panel 3 is set on the photovoltaic bracket through a non-fixed installation structure. The non-fixed installation structure allows the photovoltaic panel 3 to swing freely as a whole relative to the photovoltaic bracket when encountering strong winds; in this way, the windward area of ​​the photovoltaic panel 3 is dynamically adjusted and the wind passage is expanded, thereby effectively reducing the direct impact of wind on the photovoltaic panel 3 and improving the wind resistance of the entire photovoltaic system. In this way, under the condition of no wind or weak wind, the photovoltaic panel 3 will maintain a relatively static state (with the best inclination) facing the sky to receive sunlight for power generation.

[0087] The spring 2 with a large yield point (tension) can be selected from springs 2 with various suitable specifications such as 5kg, 10kg, 15kg, 30kg, etc. The specific specifications can be selected according to the board width D, board length C, rod length B, wind resistance level test, and can also be selected according to experience. In this way, there is no need to carry out the tying work in the first embodiment, thereby avoiding the trouble of tying.

[0088] It should be noted that the pull rod 4, the cross beam 6, the column 1, the spring 2, and the photovoltaic panel 3 together constitute a buffer mechanism, which is used to effectively absorb and slow down the swing amplitude and speed of the photovoltaic panel 3 caused by wind force through its elasticity when encountering strong wind conditions, thereby protecting the photovoltaic panel 3 from excessive stress damage caused by violent swinging, and automatically resetting the photovoltaic panel 3 as a whole to a relatively static normal state facing the sky after the strong wind.

[0089] What is disclosed above is only a preferred embodiment of the present application. The drawings are merely schematic structural diagrams and are not drawn according to the actual size ratio. They cannot be used to limit the scope of rights of the present application. Equivalent changes made based on the claims of the present application still fall within the scope covered by the present application.

Claims

1. A dynamic wind-resistant photovoltaic system, comprising a photovoltaic support with columns and beams and a photovoltaic panel, characterized in that: ① The photovoltaic panel is installed on the photovoltaic bracket through a non-fixed installation structure. The non-fixed installation structure allows the photovoltaic panel to swing freely relative to the photovoltaic bracket when encountering strong winds. In this way, the windward area of ​​the photovoltaic panel is dynamically adjusted and the wind passage is expanded, thereby effectively reducing the direct impact of wind on the photovoltaic panel and improving the wind resistance of the entire photovoltaic system. ② In the absence of wind or when the wind is not strong, the photovoltaic panels remain relatively still facing the sky to receive sunlight and generate electricity; ③ The photovoltaic panel is equipped with at least one buffer mechanism, which includes but is not limited to a spring mechanism. The buffer mechanism is used to effectively absorb and slow down the swing amplitude and speed of the photovoltaic panel caused by wind force through its elasticity when encountering strong wind conditions, thereby protecting the photovoltaic panel from excessive stress damage caused by violent swinging, and automatically resetting the photovoltaic panel to a relatively static state facing the sky after the strong wind.

2. The dynamic wind-resistant photovoltaic system according to claim 1, characterized in that: The buffer mechanism is connected to both the swingable photovoltaic panel and the fixed photovoltaic bracket, so as to limit the swing amplitude of the photovoltaic panel and slow down the swing speed of the photovoltaic panel; or, one end of the spring is connected to the swingable photovoltaic panel and the other end is connected to the fixed photovoltaic bracket, so as to limit the swing amplitude of the photovoltaic panel and slow down the swing speed of the photovoltaic panel.

3. The dynamic wind-resistant photovoltaic system according to claim 2, characterized in that: The photovoltaic panel is non-fixedly installed on the beam in the photovoltaic bracket, including but not limited to hinge installation and pivot installation, so that the photovoltaic panel can swing around the beam; or, the photovoltaic panel is installed on the beam in the photovoltaic bracket, and the beam is installed on the photovoltaic bracket in a pivot manner, so that the photovoltaic panel and the beam swing around the axis together; or, the photovoltaic panel is hung on the photovoltaic bracket with multiple spring hooks around the four sides, so that the photovoltaic panel can swing freely.

4. The dynamic wind-resistant photovoltaic system according to claim 2, characterized in that: One end of the spring is connected to a swingable photovoltaic panel through a pull rod, and the other end is connected to a fixed photovoltaic bracket, or / and the ratio of the rod length B to the panel width D is B / D≥0.5, and the ratio of the rod length B to the maximum length L of the spring is B / L≥1.

5.

5. The dynamic wind-resistant photovoltaic system according to claim 2, characterized in that: There is a certain distance K between two adjacent photovoltaic panels, and the distance K is 0.05D-1D, so that a spacious wind passage is formed between the two adjacent photovoltaic panels, thereby reducing the wind resistance of the photovoltaic system.

6. The dynamic wind-resistant photovoltaic system according to claim 2, characterized in that: The area of ​​the photovoltaic panels on one side of the beam is larger than that on the other side, forming an asymmetric structure and ensuring that the photovoltaic panels will sway in the wind.

7. The dynamic wind-resistant photovoltaic system according to claims 1-6, characterized in that: The photovoltaic panel is also equipped with an overload release device; in the case of no wind or weak wind conditions, it is used to restrict the photovoltaic panel to a relatively static state facing the sky; in the case of strong wind conditions, the photovoltaic panel is released and the spring takes over to restrict the swing amplitude and speed of the photovoltaic panel.

8. The dynamic wind-resistant photovoltaic system according to claim 7, comprising any one of the following technical features ① to ⑤: ① The overload release device includes a limit permanent magnet. In the absence of wind or weak wind conditions, the limit permanent magnet is used to attract the photovoltaic panel and limit it to a relatively static state facing the sky; in the event of strong wind conditions, the tension of the photovoltaic panel breaks free from the magnetic restriction, and the spring takes over to limit the swing amplitude and speed of the photovoltaic panel; ② The overload release device includes a limit bolt and its electric device. In the absence of wind or weak wind conditions, the limit bolt is used to bolt the photovoltaic panel and restrict it to a relatively static state facing the sky; in the event of strong winds, the electric device is activated to remove the limit bolt, so that the photovoltaic panel is free from the restriction, and the spring takes over to limit the swing amplitude and speed of the photovoltaic panel; ③ The overload release device includes a limit fuse rope and its electric heating element. In the absence of wind or weak wind, the limit fuse rope is used to tie up the photovoltaic panel and restrict it to a relatively static state facing the sky. In the event of strong wind, the electric heating element is turned on to heat the limit fuse rope, causing the rope to melt, freeing the photovoltaic panel from the restriction, and the spring takes over to limit the swing amplitude and speed of the photovoltaic panel. ④ The overload release device includes a limit overload self-breaking rope. In the absence of wind or weak wind, the limit overload self-breaking rope is used to tie up the photovoltaic panel and restrict it to a relatively static state facing the sky; in the event of strong wind, the tension of the photovoltaic panel breaks the limit overload self-breaking rope, and the spring takes over to limit the swing amplitude and speed of the photovoltaic panel; ⑤ The overload release device includes a limiting weight. When there is no wind or weak wind, the limiting weight is used to press down the photovoltaic panel and confine it to a relatively static state facing the sky. When encountering strong wind conditions, the pulling force of the photovoltaic panel pulls up the limiting weight, and the spring takes over to limit the swing amplitude and speed of the photovoltaic panel.

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