A solar photovoltaic panel tracking device with active protection function

Abstract

The application relates to the field of solar photovoltaic panels and discloses a solar photovoltaic panel tracking device with an active protection function, which comprises a tracking device, a driving mechanism, a wind speed sensor and a separation part, the wind speed sensor is in signal connection with the separation part, a pressing block is connected below the separation part, ropes are connected to the two sides of the pressing block and the tracking device to bind the two, the driving mechanism is connected to the separation part, and the driving mechanism is used for driving the tracking device to rotate; the device has wind speed detection and automatic separation functions, can timely disconnect the driving mechanism and the tracking device when strong wind comes, avoids damage of a transmission structure caused by the strong wind, and improves the reliability and durability of the system; a servo motor can accurately adjust the angle of a photovoltaic panel, can rapidly respond to wind speed changes, and ensures that the photovoltaic panel is in the best working state.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of solar photovoltaic panels, in particular to a solar photovoltaic panel tracking device with active protection function. BACKGROUND

[0002] The solar photovoltaic panel tracking support is driven to rotate by one or more speed reduction mechanisms, and according to the position of the sun, the speed reduction mechanism drives the rotating shaft to rotate the photovoltaic assembly to improve the utilization rate of light;

[0003] The solar photovoltaic power station is suitable to be arranged in a place with wide and sparsely populated areas. However, due to these wide and flat areas, there are no buildings and hilly obstructions, which leads to frequent generation of local strong winds. Generally, the solar photovoltaic panel tracking support is equipped with a plurality of solar photovoltaic panels. The solar photovoltaic panel tracking support mainly includes a rotating shaft and a fixed plate connected to the rotating shaft. The fixed plate is used to install the solar photovoltaic panel. In order to ensure sufficient power, each individual solar photovoltaic panel is about 2 square meters. When a plurality of solar photovoltaic panels are arranged and installed on the solar photovoltaic panel tracking support, the large area of the solar photovoltaic panel will bring a large wind resistance to the entire device. Under the action of strong wind, since the rotating shaft or transmission mechanism of the solar photovoltaic panel tracking support is not disconnected from the speed reduction mechanism and the driving mechanism, the strong wind will cause a large reverse torque on the rotating shaft of the solar photovoltaic panel tracking support. Taking the example of the speed reduction mechanism and the rotating shaft of the photovoltaic assembly being driven by a gear transmission, due to the sudden change of wind force and the instability of direction, the rotating mechanism and the gear transmission system will bear excessive pressure, which may cause damage to the gear, transmission shaft or speed reducer and other components. Frequent overload may cause poor meshing of the internal gears of the speed reduction mechanism, wear, jamming or even breakage. SUMMARY

[0004] The present application aims to provide a solar photovoltaic panel tracking device with active protection function to solve the problem that the existing solar photovoltaic panel tracking support, under the action of strong wind, since the rotating shaft or transmission mechanism of the solar photovoltaic panel tracking support is not disconnected from the speed reduction mechanism and the driving mechanism, the strong wind will cause a large reverse torque on the rotating shaft of the solar photovoltaic panel tracking support, which may cause damage to the gear, transmission shaft or speed reducer and other components. The specific technical solution is as follows:

[0005] The utility model provides a solar photovoltaic panel tracking device with active protection function, including tracking device, drive mechanism, wind speed sensor and separation part, wind speed sensor with separation part signal connection, tracking device below separation part is connected with the pressure block, the pressure block with the both sides of tracking device is bound with the rope, drive mechanism is connected in separation part, drive mechanism is used for driving tracking device rotates, separation part is driven drive mechanism rotates downward to make drive mechanism separate with tracking device in response to strong wind signal that wind speed sensor detects, and separation part drives drive mechanism rotates until the pressure block above, the pressure block is pressed by drive mechanism.

[0006] As one of the improvements of the above technical solutions, the separation part includes a base, a first cylinder and a guide rail, the guide rail is transversely installed on the base, a sliding block is slidably connected to the guide rail, and the first cylinder is connected to the sliding block.

[0007] As one of the improvements of the above technical solutions, the sliding block is provided with an extension end in the side direction, and the drive mechanism is connected to the extension end.

[0008] As one of the improvements of the above technical solutions, an L-shaped sliding groove is arranged on the base, one end of the L-shaped sliding groove is parallel to the guide rail, a circular rotating plate is arranged in the L-shaped sliding groove in sliding fit, a connecting rod is arranged on the end surface of the circular rotating plate, and the two ends of the connecting rod are respectively hingedly connected to the end surface of the circular rotating plate and the end surface of the extension end.

[0009] As one of the improvements of the above technical solutions, a rotating shaft is rotatably arranged in the extension end, and the two ends of the rotating shaft are respectively connected to the rod and the drive mechanism.

[0010] As one of the improvements of the above technical solutions, the drive mechanism includes a servo motor and a second cylinder, the second cylinder is connected to the servo motor, the transversely arranged second cylinder or the servo motor is parallel to the guide rail, and the second cylinder is connected to the rotating shaft.

[0011] As one of the improvements of the above technical solutions, an inductive switch is arranged on one side of the L-shaped sliding groove, and a triggering element for cooperating with the inductive switch is connected to the outer side of the connecting rod.

[0012] As one of the improvements of the above technical solutions, the tracking device includes a solar photovoltaic panel tracking support, a rotating shaft is arranged on the solar photovoltaic panel tracking support, a first gear and a second gear are respectively arranged on the servo motor and the rotating shaft, and the first gear and the second gear are in meshing transmission.

[0013] As one of the improvements of the above technical solutions, the pressing block is arranged below the other end of the L-shaped chute, the rope comprises an elastic rope, the bottom surface of the solar photovoltaic panel tracking support is connected with the elastic rope respectively at two ends, and the elastic rope is connected with the pressing block.

[0014] As one of the improvements of the above technical solutions, the first gear is coaxially connected to the rotating end of the servo motor, the end of the rotating end is provided with a plug-in part, and the pressing block is provided with a plug-in groove for accommodating the plug-in part.

[0015] Advantages of the present application: the device has wind speed detection and automatic separation function, can timely disconnect the driving mechanism and the tracking device when strong wind comes, avoids damage of the transmission structure caused by strong wind, improves the reliability and durability of the system, the servo motor can accurately adjust the angle of the photovoltaic panel, and can quickly respond to the change of wind speed, ensures that the photovoltaic panel is in the best working state, and the two elastic ropes are pulled during the downward movement of the pressing block, so that the two ends of the solar photovoltaic panel tracking support are continuously stressed, and the solar photovoltaic panel tracking support is more stable.

[0016] Additional aspects and advantages of the present application will be described in part below, some of which will become apparent from the following description, or will be learned by practice of the present application, of course, implementation of any product or method of the present application does not necessarily require all the advantages described above. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below, obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0018] Figure 1 It is a structural schematic diagram of the present application.

[0019] Figure 2 It is a structural schematic diagram of the driving mechanism of the present application.

[0020] Figure 3 It is another structural schematic diagram of the driving mechanism of the present application.

[0021] Figure 4 It is a structural schematic diagram of the fan of the present application.

[0022] Figure 5 It is a structural schematic diagram of the winding motor of the fan of the present application.

[0023] In the figure: 1, tracking device; 2, driving mechanism; 3, wind speed sensor; 4, separation part; 5, briquetting; 6, elastic rope; 7, winding motor; 8, fan; 11, rotating shaft; 111, second gear; 21, servo motor; 22, second cylinder; 211, first gear; 41, base; 42, first cylinder; 43, guide rail; 44, sliding block; 46, L-shaped sliding groove; 45, extension end; 47, connecting rod; 48, circular rotating plate; 491, inductive switch; 492, trigger element. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0025] In this document, reference to“an embodiment” means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of other embodiments. Those skilled in the art will appreciate that embodiments described herein can be combined with other embodiments in various ways.

[0026] Please refer to Figures 1-5 In the embodiments of the present application, a solar photovoltaic panel tracking device with active protection function comprises a tracking device 1, a driving mechanism 2, a wind speed sensor 3 and a separation part 4. The driving mechanism 2 is used to drive the tracking device 1. The driving mechanism 2 is movably connected to the separation part 4. The wind speed sensor 3 is signal connected with the separation part 4. The separation part 4 drives the driving mechanism 2 to separate from the tracking device 1 in response to the signal detected by the wind speed sensor 3. Specifically, a wind speed threshold is built in the wind speed sensor 3. When the wind speed detected by the wind speed sensor 3 reaches the wind speed threshold, the wind speed sensor 3 sends a signal to the separation part 4. After receiving the signal, the separation part 4 drives the driving mechanism 2 to separate from the tracking device 1, thereby preventing the tracking device 1 from generating a large reverse torque due to strong wind, and thereby preventing damage to the transmission structure between the driving mechanism 2 and the tracking device 1. The tracking device 1 can effectively prevent the generation of a large reverse torque when the wind is too strong, reduce damage to the driving mechanism 2 and the transmission structure, and ensure that the system can be self-protected in extreme weather.

[0027] Please refer to Figure 2, the separating part 4 comprises a base 41, a first cylinder 42 and a guide rail 43, the guide rail 43 is transversely mounted on the base 41, a sliding block 44 is slidably connected on the guide rail 43, the first cylinder 42 is connected with the sliding block 44, the driving mechanism 2 is connected with the sliding block 44, the moving direction and distance of the sliding block 44 can be accurately controlled by controlling the extension and retraction of the first cylinder 42, when strong wind occurs, the driving mechanism 2 and the tracking device 1 are efficiently separated by driving the sliding block 44 with the first cylinder 42;

[0028] The separating mechanism in the above embodiment can effectively protect the driving mechanism 2 from wind pressure damage, however, in a strong wind environment, there are still solar photovoltaic panels on the separated solar photovoltaic panel tracking device 1, and the whole device still faces the risk of instability, and under the action of strong wind, it is easy to swing or tilt violently, which may cause damage to the photovoltaic panels themselves or further structural instability, and even cause the photovoltaic panels to fall off or other safety hazards;

[0029] Based on the above technical problems, the present application also provides an embodiment to solve the above problems, specifically, the side of the sliding block 44 is provided with an extension end 45, the driving mechanism 2 is connected to the extension end 45, the base 41 is provided with an L-shaped sliding groove 46, one end of the L-shaped sliding groove 46 is parallel to the guide rail 43, in this embodiment, the driving mechanism 2 comprises a servo motor 21 and a second cylinder 22, the second cylinder 22 is connected to the servo motor 21, the transversely arranged second cylinder 22 or servo motor 21 is parallel to the guide rail 43, the second cylinder 22 is connected to the rotating shaft, specifically, the second cylinder 22 and the servo motor 21 are side by side, and the second cylinder 22 and the servo motor 21 are located in the extension direction of one end of the L-shaped sliding groove 46, and the other end of the L-shaped sliding groove 46 is arranged towards the direction of the guide rail 43, or the other end of the L-shaped sliding groove 46 is below the guide rail 43;

[0030] Further, referring to Figure 2 and Figure 3 , the L-shaped sliding groove 46 is provided with a circular rotating plate 48 which is slidably matched with the L-shaped sliding groove 46, the connecting rod 47 is arranged on the end face of the circular rotating plate 48, the two ends of the connecting rod 47 are respectively hinged to the end face of the circular rotating plate 48 and the end face of the extension end 45, specifically, the extension end 45 is penetrated by a rotating shaft which is rotatably matched with the extension end 45, the two ends of the rotating shaft are respectively connected with the rod and the driving mechanism 2, preferably, the tracking device 1 comprises a solar photovoltaic panel tracking support, the solar photovoltaic panel tracking support is provided with a rotating shaft 11, the servo motor 21 and the rotating shaft 11 are respectively provided with a first gear 211 and a second gear 111, the first gear 211 and the second gear 111 are in meshing transmission, the tracking device 1 further comprises a pressing block 5, the pressing block 5 is arranged below the other end of the L-shaped sliding groove 46, the bottom surface of the solar photovoltaic panel tracking support is respectively connected with elastic ropes 6, and the elastic ropes 6 are connected with the pressing block 5;

[0031] The operation principle of the separating part 4 is as follows:

[0032] When the wind speed sensor 3 detects that the wind speed reaches the wind speed threshold, the wind speed sensor 3 sends a signal to the separating part 4, and after the separating part 4 receives the signal, the telescopic end of the first cylinder 42 is retracted (by default, the telescopic end of the first cylinder 42 is in an extended state, and at this time, the driving mechanism 2 can be driven by the tracking mechanism), when the telescopic end of the first cylinder 42 changes from the extended state to the retracted state, the telescopic end of the first cylinder 42 drives the slider 44 and the driving mechanism 2 to retreat, and the driving mechanism 2 is disconnected from the tracking mechanism, and at the same time, in the process of retreating, the extension end 45 of the slider 44 drives the connecting rod 47 to retreat, and the connecting rod 47 drives the circular rotating plate 48 to slide in the L-shaped sliding groove 46. It should be noted that at this time, the circular rotating plate 48 slides in one end of the L-shaped sliding groove 46.

[0033] When the first cylinder 42 continues to drive the slider 44 and reaches a certain position, the circular rotating plate 48 will reach the intersection of the two ends of the L-shaped sliding groove 46, and if the first cylinder 42 is continuously driven, the circular rotating plate 48 will slide from one end of the L-shaped sliding groove 46 to the other end of the L-shaped sliding groove 46. It should be noted that at this time, under the driving of the first cylinder 42, the circular rotating plate 48 will change from horizontal displacement to vertical climbing, and the circular rotating plate 48 will also drive the connecting rod 47, the rotating shaft and the driving mechanism 2 to rotate, and the driving mechanism 2 will change from horizontal arrangement to vertical arrangement, so that the center of gravity of the entire driving mechanism 2 is lowered.

[0034] Since the driving mechanism 2 includes the second cylinder 22, when the driving mechanism 2 is rotated to the vertical arrangement, the second cylinder 22 can be used to drive the servo motor 21 to press the pressing block 5, and in the process of the pressing block 5 moving downward under the pressure, the two elastic ropes 6 are pulled, so that the two ends of the solar photovoltaic panel tracking support are continuously stressed, and the solar photovoltaic panel tracking support is more stable.

[0035] The above technical solution can use the second cylinder 22 to drive the servo motor 21, but still lacks corresponding starting conditions. In order to realize automation, the application also provides an embodiment to solve the above problems. Specifically, the base 41 is provided with an induction switch 491 on one side of one end of the L-shaped sliding groove 46, and the outer side of the connecting rod 47 is connected with a trigger element 492 for cooperating with the induction switch 491. In this embodiment, the induction switch 491 can be a proximity switch, and the trigger element 492 can be a metal element for triggering the proximity switch.

[0036] The specific operation principle is as follows:

[0037] When the circular rotating plate 48 slides from one end of the L-shaped sliding groove 46 to the other end of the L-shaped sliding groove 46 and starts to gradually climb along the other end of the L-shaped sliding groove 46, the trigger element 492 located on the side of the second cylinder 22 starts to gradually approach the induction switch 491, and it needs to be noted that the induction switch 491 is at a certain height and can be triggered only when the connecting rod 47 is turned over by the circular rotating plate 48 to be vertically arranged. After the trigger element 492 triggers the induction switch 491, the second cylinder 22 starts to drive the servo motor 21 to move downward, and the servo motor 21 gradually approaches the pressing block 5 and finally applies downward pressure to the pressing block 5, so that the elastic rope 6 is in a tense state, thereby realizing downward pulling of the solar photovoltaic panel tracking support from both sides, so that the solar photovoltaic panel tracking support can still maintain stability when facing strong wind.

[0038] Please refer to Figure 5 In some embodiments, two symmetrically arranged winding motors 7 are connected on the pressing block 5, the winding motors 7 are connected with the servo motor signal, and the two elastic ropes 6 on both sides of the solar photovoltaic panel tracking support are connected with the two winding motors 7 respectively. Specifically, the rotating end of the winding motor 7 is wound with the elastic rope 6, and the elastic rope 6 is first led out from the rotating end of the winding motor 7 and then connected with the solar photovoltaic panel tracking support. By default, that is, when the solar photovoltaic panel tracking support is balanced, the lengths of the elastic ropes 6 led out from the two winding motors 7 are consistent. When the servo motor drives the entire solar photovoltaic panel tracking support to tilt to either side, one of the winding motors 7 retracts its elastic rope 6, and the other winding motor 7 releases the elastic rope 6.

[0039] Preferably, the first gear 211 is coaxially connected to the rotating end of the servo motor 21, the end of the rotating end is provided with a plug-in part, and the pressing block 5 is provided with a plug-in groove for accommodating the plug-in part. By arranging the plug-in part matched with the plug-in groove, the deviation of the pressing block 5 when the pressure is applied to the pressing block 5 can be prevented.

[0040] For the judgment of wind speed, the application also provides an embodiment. Specifically, a fan 8 is used instead of the above-mentioned wind speed sensor 3. The fan 8 includes a central rotating rod and a plurality of fan blades connected around the central rotating rod. Only one of the fan blades is connected with a metal piece. Another proximity switch is arranged on the side of the fan 8 to detect the metal piece. The proximity switch is triggered once every time the fan 8 rotates one circle. Under the condition that the radius of the fan blade and the angular speed of the fan blade (equal to the rotating speed of the fan blade RPM) are known, the wind speed can be calculated to determine whether it will affect the solar photovoltaic panel tracking support, and the first cylinder 42 is started to drive the driving mechanism 2 to separate from the tracking mechanism as needed.

[0041] In addition, the application also provides a running logic applied to the above-mentioned fan 8. Specifically:

[0042] S1, set threshold wind speed v0, blowing frequency f0 and duration t0 by fan 8 or wind speed sensor 3;

[0043] S2, when actual wind speed v1 measured by fan 8 or wind speed sensor 3 is greater than v0, select corresponding step according to blowing frequency and duration of strong wind;

[0044] S3A, when actual blowing frequency f1 is greater than blowing frequency f0, but actual duration t1 is less than duration t0, fan 8 or wind speed sensor 3 does not send signal;

[0045] S3B, when actual blowing frequency f1 is greater than blowing frequency f0, but actual duration t1 is close to duration t0, fan 8 or wind speed sensor 3 sends signal;

[0046] S3C, when actual blowing frequency f1 is greater than blowing frequency f0, and actual duration t1 is greater than duration t0, fan 8 or wind speed sensor 3 sends signal;

[0047] S3D, when actual blowing frequency f1 is less than blowing frequency f0, but actual duration t1 is greater than duration t0, fan 8 or wind speed sensor 3 sends signal;

[0048] S3E, when actual blowing frequency f1 is less than blowing frequency f0, but actual duration t1 is close to duration t0, fan 8 or wind speed sensor 3 sends signal;

[0049] S3F, when actual blowing frequency f1 is less than blowing frequency f0, and actual duration t1 is less than duration t0, fan 8 or wind speed sensor 3 does not send signal;

[0050] When working normally in the case of low wind speed, wind speed sensor 3 or fan 8 will continuously monitor the surrounding environment, when the wind speed does not reach the preset wind speed threshold, tracking device 1 will remain in normal working state, servo motor 21 controls the angle change of photovoltaic panel, ensuring maximum light receiving.

[0051] It should be noted that the terms "first", "second" and the like in the specification herein are used only for descriptive purposes and not to be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features.

[0052] It will be apparent to those skilled in the art that the application is not limited to the details of the above-exemplified embodiments and that the present application can be implemented in other particular forms without departing from the spirit or essential characteristics of the present application. The embodiments should therefore be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the above description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. A solar photovoltaic panel tracking device with active protection function, characterized in that, The utility model provides a wind speed sensor and the signal connection of separation part, tracking device is connected with the pressure block below separation part, the pressure block is connected with the rope of both sides of tracking device and is bound, drive mechanism is connected to separation part, drive mechanism is used for driving tracking device rotation, separation part drives drive mechanism to rotate downward to make drive mechanism separate with tracking device in response to the strong wind signal that wind speed sensor detects, and separation part drives drive mechanism to rotate until the pressure block above, the pressure block is pressed by drive mechanism, The separation part includes a base, a first cylinder and a guide rail, the guide rail is transversely installed on the base, a sliding block is slidably connected to the guide rail, and the first cylinder is connected to the sliding block; The drive mechanism includes a servo motor and a second cylinder, the second cylinder is connected to the servo motor, the tracking device includes a solar photovoltaic panel tracking support, a rotating shaft is arranged on the solar photovoltaic panel tracking support, a first gear and a second gear are arranged on the rotating shaft and the servo motor respectively, and the first gear and the second gear are in meshing transmission; The sliding block is provided with an extension end in the side direction, and the drive mechanism is connected to the extension end; An L-shaped sliding groove is arranged on the base, one end of the L-shaped sliding groove is parallel to the guide rail, a circular rotating plate is arranged in the L-shaped sliding groove in sliding fit, a connecting rod is arranged on the end surface of the circular rotating plate, and both ends of the connecting rod are hingedly connected to the end surface of the circular rotating plate and the end surface of the extension end respectively; An inductive switch is arranged on one side of the L-shaped sliding groove, and a triggering element for cooperating with the inductive switch is connected to the outer side of the connecting rod; The pressure block is arranged below the other end of the L-shaped sliding groove, the rope includes an elastic rope, both ends of the bottom surface of the solar photovoltaic panel tracking support are connected to the elastic rope respectively, and the elastic rope is connected to the pressure block.

2. The solar photovoltaic panel tracking device with active protection function according to claim 1, characterized in that: A rotating shaft is inserted into the extension end in rotating fit, and both ends of the rotating shaft are connected to the connecting rod and the drive mechanism respectively.

3. The solar photovoltaic panel tracking device with active protection function according to claim 2, characterized in that: The second cylinder or the servo motor arranged in the transverse direction is parallel to the guide rail, and the second cylinder is connected to the rotating shaft.

4. The solar photovoltaic panel tracking device with active protection function according to claim 1, characterized in that: The first gear is coaxially connected to the rotating end of the servo motor, the end of the rotating end is provided with a plug-in part, and the pressure block is provided with a plug-in groove for accommodating the plug-in part.

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