Reversible graphene coating photovoltaic panel system and working method

Abstract

The invention provides a reversible graphene coating photovoltaic panel system and a working method.The system comprises a pin sleeve arranged at the joint of a front roof and a rear roof of a house, the pin sleeve is arranged in the axial direction of the joint, a pin shaft is arranged in the pin sleeve in a rotating fit mode, a supporting frame is arranged on one side of the pin sleeve, the pin shaft is connected with the supporting frame, and the pin shaft is connected with the supporting frame; a plurality of photovoltaic panels rotating around the symmetrical center line of the photovoltaic panels are arranged in the supporting frame, and the supporting frame is suitable for being attached to the front roof and the rear roof in parallel. The photovoltaic panel can be reversed and can be attached to the roof in parallel, so that the area of the windward side is reduced, and the wind resistance is improved.

Description

Technical Field

[0001] The present invention belongs to the field of photovoltaic power generation, and in particular relates to a switchable graphene coating photovoltaic panel system and a working method. Background Art

[0002] For roofs with ordinary tiles and triangular cross-sections, most roofs have one side facing south and facing the sun, and the other side facing north and facing away from the sun. Photovoltaic panels in the prior art are generally installed on the sunny side of the roof. However, due to street construction, there are still some such roofs with one side facing east and the other facing west. Whether the photovoltaic panels are arranged on the east roof or the west roof, they can only receive strong sunlight for half a day. If photovoltaic panels are arranged on both the east and west roofs, only one side of the photovoltaic panels can play an effective role except at noon and the purchase cost of the photovoltaic panels is increased. In order to solve this technical problem, a Chinese patent document with the document number "CN209676165U" and the name "A photovoltaic module installation system for convenient flipping of photovoltaic modules" discloses a photovoltaic panel that can be arranged on such roofs and can be flipped according to the position of the sun to achieve commutation, so that the photovoltaic panel can be timely aimed at the sun to maximize the power generation function of the photovoltaic panel. However, since the left and right support boards are installed on the top of the triangular roof, no matter which direction the photovoltaic panels installed on the support boards face, the photovoltaic panels are higher than the roof and form a larger windward surface. When the wind is strong outside, the photovoltaic panels will be subjected to a large wind force. If the left and right support boards are not fixed firmly on the roof, the photovoltaic panels and the left and right support boards may be blown down. If the left and right support boards are fixed firmly on the roof, the left and right support boards will shake or even resonate under the repeated blowing of wind from various directions, causing a pulling effect on the fixing points of the left and right support boards and the roof. Over time, the roof will be damaged and cracked, and the roof will leak when it rains. Summary of the invention

[0003] 1. Technical issues to be solved

[0004] In view of the above technical problems, the purpose of the present invention is to provide a reversible graphene-coated photovoltaic panel system and working method, wherein the photovoltaic panel can not only realize reversal but also be parallelly attached to the roof, thereby reducing the area of ​​the windward surface and improving the wind resistance.

[0005] (II) Technical solution

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] The present invention provides a reversible graphene-coated photovoltaic panel system, which comprises: a pin sleeve arranged at the connection between the front and rear roofs of a house, the pin sleeve is arranged along the axial direction of the connection, a pin shaft is rotatably fitted in the pin sleeve, a support frame is arranged on one side of the pin sleeve, the pin shaft is connected to the support frame, a plurality of photovoltaic panels rotating around their own symmetry center line are arranged in the support frame, and the support frame is suitable for being parallelly attached to the front and rear roofs.

[0008] The pin sleeve is provided with a plurality of notches along the axial direction, and a connecting rod is rotatably fitted in each notch. One end of the connecting rod is connected to the pin shaft, and the other end is connected to the support frame. One end of the pin shaft is transmission-connected to the adjacent reversing motor.

[0009] The support frame includes an upper frame adjacent to the pin sleeve and a lower frame away from the pin sleeve; a plurality of upper through holes are evenly distributed along the axial direction on the side wall of the upper frame adjacent to the pin sleeve; a plurality of lower blind holes are evenly distributed along the axial direction on the inner side wall of the lower frame adjacent to the pin sleeve; each upper through hole and the corresponding lower blind hole have a cosymmetrical center line; an upper rotating shaft is rotatably fitted in each upper through hole, and a lower rotating shaft is rotatably fitted in each lower blind hole; one end of each photovoltaic panel is connected to the adjacent upper rotating shaft, and the other end is connected to the adjacent lower rotating shaft; one end of each upper rotating shaft away from the photovoltaic panel extends out of the upper through hole, and is transmission-connected to the corresponding flip motor on the upper frame.

[0010] The photovoltaic panel is fixed in the installation frame, which includes an upper side beam adjacent to the upper frame and a lower side beam adjacent to the lower frame. One end of each photovoltaic panel is connected to the adjacent upper rotating shaft through the upper side beam, and the other end is connected to the adjacent lower rotating shaft through the lower side beam.

[0011] The reversible graphene-coated photovoltaic panel system also includes: a controller, a wind direction and wind force sensor, and the controller is connected to the wind direction and wind force sensor, the reversing motor and the flipping motor signal.

[0012] The present invention also provides a working method of a switchable graphene coating photovoltaic panel system, which comprises the following steps:

[0013] a. The reversing motor drives the support frame to rotate around the center line of the pin shaft and move away from the roof surface;

[0014] b. The support frame rotates to a set angle at or above the horizontal state, and the flip motor drives each photovoltaic panel to rotate and flip over;

[0015] c. The support frame rotates around the center line of the pin shaft and sticks to the roof on the other side.

[0016] When the support frame rotates to a preset angle range of or above the horizontal state, each photovoltaic panel is perpendicular to the support frame.

[0017] During the flipping process of each photovoltaic panel, the wind direction and wind force sensor detects the wind direction, and the controller calculates the angle δ between the wind direction in the horizontal plane and the center line of the pin shaft. The controller calculates the angle α between the support frame and the horizontal plane according to the rotation angle of the commutation motor. Based on the formula The included angle between the side beam and the upper frame is adjusted in real time to the calculated angle β.

[0018] (III) Beneficial effects

[0019] The present invention provides a reversible graphene-coated photovoltaic panel system and a working method, which have the following beneficial effects:

[0020] (1) The rotation of the pin shaft in the pin sleeve is used to drive the photovoltaic panel to change direction on the front and rear roofs. The photovoltaic panel can be rotated around its own symmetry center line to realize the flipping of the photovoltaic panel, so that the light-receiving surface of the photovoltaic panel can face upward when the photovoltaic panel is switched to different roofs; the support frame is parallel to the front and rear roofs to reduce the windward area of ​​the photovoltaic panel and improve the wind resistance.

[0021] (2) The commutation motor utilizes the connecting rods in each slot to drive the support frame to rotate synchronously with the pin shaft, thereby accurately controlling the rotation angle of the support frame.

[0022] (3) The flip motor uses the upper rotating shaft to drive each photovoltaic panel to flip, thereby accurately controlling the rotation angle of each photovoltaic panel.

[0023] (4) Using the mounting frame to fix the photovoltaic panel can improve the supporting strength of the photovoltaic panel and prevent the photovoltaic panel from being twisted, deformed or damaged by external forces during the flipping process.

[0024] (5) The controller is used to obtain the signals of the wind direction and wind force sensors in real time, and decide whether to operate the reversing motor to realize the reversal of the photovoltaic panels between different roofs according to the wind direction and wind force. It also determines the timing and reversing angle of the photovoltaic panels during the reversing process.

[0025] (6) The working method not only realizes the switching of photovoltaic panels between different roofs, but also realizes the flipping of photovoltaic panels after the support frame rotates to a set angle, so as to avoid the collision of photovoltaic panels with the roof when flipping.

[0026] (7) When the support frame rotates to a preset angle range of or above the horizontal state, each photovoltaic panel rotates 90 degrees so that each photovoltaic panel is perpendicular to the support frame; at this time, the windward area of ​​the photovoltaic panel along the front and rear directions of the house is minimized, thereby reducing the resistance of the wind force along the front and rear directions of the house to the commutation of the photovoltaic panel, reducing the output power of the commutation motor, protecting the motor and completing the smooth commutation of the support frame.

[0027] (8) This working method enables the photovoltaic panel to adjust the angle between the upper side beam and the upper frame in real time according to the wind direction and the position of the support frame when the photovoltaic panel is changing direction, thereby changing the orientation of the photovoltaic panel, reducing the area of ​​the windward surface of the photovoltaic panel, and improving the wind resistance of the photovoltaic panel during the changing direction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a front schematic diagram of the graphene-coated photovoltaic panel system before commutation in Example 1 of the present invention;

[0029] Figure 2 This is a schematic diagram of the back side of the graphene-coated photovoltaic panel system before commutation in Example 1 of the present invention;

[0030] Figure 3 This is a front view of the photovoltaic support frame in Example 1 of the present invention;

[0031] Figure 4 This is a rear view of the photovoltaic support frame in Example 1 of the present invention;

[0032] Figure 5 A top view of the graphene-coated photovoltaic panel system before commutation in Example 1 of the present invention;

[0033] Figure 6 It is a partial cross-sectional view of the graphene coating photovoltaic panel system AA before commutation in Example 1 of the present invention;

[0034] Figure 7 It is a partial cross-sectional view of the graphene coating photovoltaic panel system BB before commutation in Example 1 of the present invention;

[0035] Figure 8 For Example 1 of the present invention Figure 6 A partial enlarged view of point C in the middle;

[0036] Fig. 9 For Example 1 of the present invention Figure 7 A partial enlarged view of point D in the middle;

[0037] Fig.10 This is a schematic diagram of a support frame in a horizontal state above the front roof in Example 1 of the present invention;

[0038] Fig.11 This is a schematic diagram of the support frame in Example 1 of the present invention in an inclined state above the front roof;

[0039] Fig.12 It is a schematic diagram of a support frame in a vertical state in Embodiment 1 of the present invention;

[0040] Fig.13 This is a schematic diagram of a graphene-coated photovoltaic panel system after reversing according to Example 1 of the present invention;

[0041] Fig.14 A schematic diagram of the tilted posture of the photovoltaic panel above the rear roof in Example 2 of the present invention;

[0042] Fig.15 The photovoltaic panel in Example 2 of the present invention is located at Fig.14 Angle relationship diagram in the middle posture;

[0043] Fig.16 This is a second schematic diagram of the photovoltaic panel tilted above the rear roof in Example 2 of the present invention;

[0044] Fig.17 The photovoltaic panel in Example 2 of the present invention is located at Fig.16 Angle relationship diagram in neutral posture.

[0045] In the figure: 1. house; 101. front roof; 102. rear roof; 2. pin sleeve; 3. notch; 4. pin shaft; 5. connecting rod; 6. support frame; 601. upper frame; 602. lower frame; 603. left frame; 604. right frame; 605. upper through hole; 606. lower blind hole; 7. flip motor; 8. mounting frame; 801. upper side beam; 802. left side beam; 803. right side beam; 804. lower side beam; 9. photovoltaic panel; 10. reversing motor; 11. platform; 12. controller; 13. wind direction and wind force sensor; 14. upper rotating shaft; 15. lower rotating shaft. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] Example 1

[0048] like Figure 1-9 As shown, the house 1 has a triangular roof, which includes a front roof 101 and a rear roof 102. A pin sleeve 2 is provided along the joint (i.e., the joint) of the front and rear roofs. The pin sleeve 2 is a cylindrical hollow structure and has a coaxial surface with the front and rear roofs. A pin shaft 4 is coaxially penetrated in the pin sleeve 2. The pin shaft 4 is rotatably fitted in the pin sleeve 2. The pin sleeve 2 is evenly provided with a plurality of notches 3 along the axis. Fig. 9 As shown, the cross section of the slot 3 is fan-shaped. A connecting rod 5 is provided on the pin shaft 4 at each slot 3, one end of each connecting rod 5 is connected to the pin shaft 4 in the corresponding slot 3, and the other end is connected to the support frame 6 on one side of the slot 3. Each connecting rod 5 is suitable for rotating in the corresponding slot 3 following the pin shaft 4. Figure 3-4As shown, the support frame 6 includes an upper frame 601 at the top, a lower frame 602 at the bottom, a left frame 603 on the left side, and a right frame 604 on the right side. Each connecting rod 5 is connected to the upper frame 601, and the cross-section of the upper frame 601 and the lower frame 602 is concave, so that the opposite surfaces of the upper frame 601 and the lower frame 602 are respectively provided with grooves, which facilitate the arrangement and insertion of the wire harness. The bottom wall of the groove of the upper frame 601 is uniformly distributed with a plurality of upper through holes 605 along the axial direction, and each upper through hole 605 is respectively arranged between an adjacent pair of connecting rods 5. The bottom wall of the groove of the lower frame 602 is uniformly distributed with a plurality of lower blind holes 606 along the axial direction, and each lower blind hole 606 corresponds to the upper through hole 605 and has a cosymmetrical surface. The upper shaft 14 is coaxially rotatably matched in the upper through hole 605, and the lower shaft 15 is coaxially rotatably matched in the lower blind hole 606. The mounting frame 8 is connected between the upper rotating shaft 14 and the lower rotating shaft 15 that are matched with each other. Figure 10-11 As shown, the installation frame 8 includes an upper side beam 801 adjacent to the upper frame 601, a lower side beam 804 adjacent to the lower frame 602, and a left beam 802 and a right beam 803 respectively connecting the upper side beam 801 and the lower side beam 804. The upper rotating shaft 14 is connected to the upper side beam 801, and the lower rotating shaft 15 is connected to the lower side beam 804. Photovoltaic panels 9 are fixedly arranged in each installation frame 8, and the upper rotating shaft 14, the lower rotating shaft 15 and the installation frame 8 share a symmetric surface. The outer ends of each upper rotating shaft 14 extend out of the outer side of the upper frame 601 from the upper through hole 605, and the outer ends of each upper rotating shaft 14 are respectively provided with a flip motor 7, and the flip motor 7 is suitable for driving the connected upper rotating shaft 14 to rotate around its symmetric center line. One end of the pin shaft 4 extends out of the pin sleeve 2 and is coaxially connected to a reversing motor 10, and the reversing motor 10 is suitable for driving the pin shaft 4 to rotate in the pin sleeve 2, thereby driving the support frame 6 to rotate around the center line of the pin shaft 4 through the connecting rod 5. A platform 11 is fixedly provided on one side of the roof, and a controller 12 is provided on the platform 11. A wind direction and wind force sensor 13 is provided on the upper side of the controller 12. The controller 12 is connected to the wind direction and wind force sensor 13 by signal and is suitable for collecting external wind force and wind direction information. The controller 12 is connected to the flip motor 7, the reversing motor 10 and each photovoltaic panel 9 by signal and is suitable for controlling the rotation angle of the flip motor 7 and the reversing motor 10, and transmitting the power of each photovoltaic panel 9 to the power grid. The wind direction and wind force sensor 13 can adopt a wind direction and wind force monitoring device for traffic disclosed in the Chinese patent document with the document number "CN212988448U" or a wind cup type wind speed and direction monitoring device disclosed in the Chinese patent document with the document number "CN118858682A".

[0049] The surface of each photovoltaic panel 9 facing the sun is coated with a layer of graphene to improve its photoelectric conversion efficiency and enhance the thermal conductivity and heat dissipation performance of the photovoltaic panel. In order to make the support frame parallel to the front and rear roofs, the contact part between the support frame and the front and rear roofs can be designed according to the shape of the roof so that the support frame and the roof fit more stably.

[0050] The working method of the reversible graphene-coated photovoltaic panel system described in the present invention is as follows:

[0051] like Figure 1 As shown, in the initial state, the support frame 6 is attached to the front roof 101, and the support frame 6 and the mounting frame 8 and the photovoltaic panel 9 thereon are parallel to the front roof 101 and are lower than the connection between the front roof 101 and the rear roof 102. The connection blocks the wind and the gap between the photovoltaic panel 9 and the front roof 101 is smaller than that in the prior art. The external wind will not generate enough thrust on the support frame 6, the mounting frame 8 and the photovoltaic panel 9, so that the photovoltaic panel 9 can be firmly attached to the front roof 101.

[0052] In order to clearly show the operating status of each photovoltaic panel 9, Figure 10-14 and Fig.16 The left frame 603 and the right frame 604 of the support frame 6 are not shown. As a preferred embodiment, the controller is equipped with a light sensor to monitor the angle of sunlight. As the direction of sunlight changes, when the light condition on the front roof 101 decreases to a set value and the light condition on the rear roof 102 increases to a set value, Fig.10 As shown, the reversing motor 10 works and drives the support frame 6 to rotate synchronously through the pin shaft 4 and the connecting rod 5. When the support frame 6 rotates to a set angle at or above the horizontal state, each flip motor 7 drives each mounting frame 8 to rotate the set angle through the connected upper rotating shaft 14, as shown in FIG. Fig.11 The reason is that when the support frame 6 is below its horizontal state, each photovoltaic panel 9 is lower than the connection between the front and rear roofs, and the photovoltaic panel 9 is not easily affected by the wind due to the wind blocking effect of the roof. At this time, the flip motor 7 drives the installation frame 8 to rotate too early, which will cause the installation frame 8 to collide with the roof, causing the installation frame 8 to twist and deform, thereby damaging the photovoltaic panel 9.

[0053] As a preferred embodiment, the rotation angle of each mounting frame 8 is set to 90 degrees. At this time, the reversing motor 10 continues to rotate and drives the supporting frame 6 to rotate to a vertical state. Fig.12As shown. The reason is: if the wind direction is along the front and rear directions of the house 1, there is no support to withstand the wind force on the photovoltaic panel 9, and only the torque output by the reversing motor 10 is relied upon to offset the wind force and drive the support frame 6 to continue rotating. The motor 10 is subjected to a large load and may be damaged; when the mounting frame 8 rotates 90 degrees, each mounting frame 8 and the photovoltaic panel 9 are perpendicular to the support frame 6, and the windward area of ​​the photovoltaic panel 9 is minimized, thereby reducing the output power of the reversing motor 10 and completing the smooth reversal of the support frame 6. The support frame 6 continues to rotate to above the rear roof 102. When the support frame 6 rotates to a set angle at or above the horizontal state, each flip motor 7 continues to rotate 90 degrees to make the front of each photovoltaic panel 9 face upwards; thereby avoiding the collision between the mounting frame 8 and the roof when rotating. Then, the reversing motor 10 continues to rotate until the support frame 6 is against the rear roof 102, and the reversing process of the graphene-coated photovoltaic panel system is completed. As shown Fig.13 As shown, at this time, the support frame 6, the installation frame 8 and the photovoltaic panel 9 are parallel to the rear roof 102 and lower than the connection between the front roof 101 and the rear roof 102. Due to the shielding of the connection, the external wind will not generate enough thrust on the support frame 6, the installation frame 8 and the photovoltaic panel 9, so that the photovoltaic panel 9 can be firmly attached to the rear roof 102.

[0054] As a preferred embodiment, the flip motor 7 and the reversing motor 10 are provided with a rotor locking device, and when the motor is not working, the locking device can limit the rotor to prevent it from rotating, thereby limiting the support frame 6 and the mounting frame 8. The flip motor 7 and the reversing motor 10 can adopt a servo motor that can autonomously monitor the rotation angle of its rotor.

[0055] Example 2

[0056] The difference between this embodiment and embodiment 1 is that:

[0057] like Fig.14 As shown, when the support frame 6 passes over the roof, each flip motor 7 drives each mounting frame 8 to rotate to a set angle through the connected upper rotating shaft 14. The angle is not a fixed value, but is adjusted in real time according to the wind direction. As a preferred embodiment, assuming that the flow direction of the surrounding air (that is, the wind direction) is horizontal and parallel to each other and maintains the same direction, the upper and lower side beams of the mounting frame 8 are parallel to the wind direction, reducing the area of ​​the windward surface of the photovoltaic panel 9 in the mounting frame 8, thereby reducing the wind resistance of the photovoltaic panel 9 and improving the reliability of the photovoltaic panel commutation. In order to clearly represent the relevant variables, the length of a line segment is expressed in the form of L+line segment name below, for example, L PQ Represents the length of line segment PQ. The working method of the switchable graphene-coated photovoltaic panel system is as follows:

[0058] (1) If the photovoltaic panel is located on the upper side of the rear roof 102 and the mounting frame is as shown Fig.14Direction as shown. Fig.15 As shown, line segment TZ represents the upper side beam 801 of the mounting frame 8, and the symmetric center line of the upper side beam is the symmetric center line of the adjacent flip motor 7, which is line segment SM. At the same time, the mounting frame 8 rotates around the center line of the pin 4, which is line segment HK, and line segment SM is perpendicular to line segment HK (i.e. SM⊥HK), and line segment HK and line segment SM form a plane JHKG. Among them, line segment JG represents the upper frame 601 of the support frame 6, line segment JG is parallel to line segment HK, and line segment JH is parallel to line segment SM and line segment KG. The angle ∠TSG between line segment TZ and line segment JG is an acute angle and is set to β, that is, the angle between the upper side beam 801 and the upper frame 601, which is adjusted by the flip motor 7. The line segment SM is projected into the horizontal plane passing through the line segment HK to obtain the line segment PM. The angle ∠SMP between the line segment PM and SM is set to α, which is the angle between the support frame 6 and the horizontal plane and is adjusted by the commutation motor 10. Taking the line segment TS as an example, in the plane TSG, a perpendicular line is drawn from point T to the line segment SG, and its perpendicular point is U. The plane TSG is actually the plane swept by the upper side beam 801 when rotating in the support frame 6. The plane is perpendicular to the plane JHKG formed by the center line of the pin shaft 4 and the upper frame 601; and since the line segment TU is perpendicular to the line segment JG, the line segment TU is perpendicular to any line segment in the plane JHKG. In the plane JHKG, the perpendicular point N of U is found on the line segment HK to form the line segment UN, and the line segment TU⊥UN. Projecting from point U to the horizontal plane PMK, the projection point is Q. Since the upper frame 601 of the support frame 6 remains horizontal during the rotation process, that is, the line segment JG remains horizontal, the projection of the line segment SU on the horizontal plane PMK is the line segment PQ. The length of the line segment PQ is L. PQ The length of line segment SU is L SU Equal, that is, L PQ =L SU . At the same time, the line segments SU, UQ, PQ and SP form a vertical plane SUQP perpendicular to the horizontal plane PQNM. The projection of the line segment TU on the horizontal plane PQNM is the line segment RQ, and the projection of the line segment UN on the horizontal plane PQNM is the line segment QN. Since the line segment TU⊥UN and the line segment TU is perpendicular to the plane JHKG, the line segment RQ and the line segment QN are on the same straight line, and the line segment RN is parallel to the line segment PM.

[0059] Since line segment JG is parallel to line segment HK, the projection line segment PQ of line segment SU on the horizontal plane is also parallel to line segment HK. Since SM⊥HK, PM⊥HK, and thus PQ⊥PM, PQ⊥RN. Since plane TSG is not a horizontal plane, the lengths of line segments TU and RQ are not equal. In plane TUNR, draw a perpendicular line from point T to line segment UQ, with its perpendicular point being W, and the intersection of the perpendicular line and line segment UN being V. Since UQ⊥RN and TW⊥UQ, line segment TW is parallel to line segment RQ and their lengths are equal, i.e. L TW =L RQ .

[0060] The reversing motor 10 adjusts the angle ∠SMP, ∠SMP=α, and the flip motor 7 adjusts the angle ∠TSG, ∠TSG=β. According to the length of the top side beam 801, the length L of the line segment ST ST It is known that it is 1 / 2 of the total length of the upper side beam. The length of line segment SU is L SU YesL SU =L ST Cosβ, length L of line segment TU TU YesL TU =L ST Sinβ. Since line segment PQ is the projection of line segment SU and the two are parallel to each other, their lengths are equal, that is, L SU =L PQ . Since line segment UN is parallel to line segment SM, that is, UN / / SM, the angle between line segment UN and line segment RN is ∠UNR = ∠SMP = α. In plane TUNR, since UQ⊥RN, ∠NUQ = 90°-α; since TU⊥UN, ∠TUW = 90°-∠NUQ, so ∠TUW = α; since TW⊥UQ, the length of line segment TW is L TW YesL TW =L TU Sinα, that is, L TW =L ST SinβSinα, L TW =L RQ , L PQ =L SU =L ST Cosβ. If ∠RPQ=δ, then but It follows from this

[0061] ∠RPQ is the angle between the projection of the line segment ST on the horizontal plane PQNM and the center line of the pin 4 (i.e., the line segment HK). If the projection is consistent with the above-mentioned wind direction, the upper and lower side beams of the mounting frame 8 are parallel to the wind direction, thereby reducing the windward surface area of ​​the photovoltaic panel 9 in the mounting frame 8. Therefore, after the wind direction and wind force sensor 13 detects the wind direction, the controller calculates the angle δ between the wind direction in the horizontal plane and the center line of the pin 4. At the same time, during the flipping process of the support frame 6, the controller monitors and controls the rotation angle of the reversing motor 10 in real time, that is, monitors the angle α between the support frame 6 and the horizontal plane in real time. β can be obtained by the above formula. The controller controls and monitors the rotation angle of each flipping motor 7, and adjusts the angle ∠TSG between the upper side beam 801 and the upper frame 601 to the calculated angle β.

[0062] (2) If the photovoltaic panel is located on the upper side of the rear roof 102 and the mounting frame is as shown Fig.16 Direction as shown. Fig.17 As shown, line segment TZ represents the upper side beam 801 of the mounting frame 8, and the symmetric center line of the upper side beam is the symmetric center line of the adjacent flip motor 7, which is line segment SM. The mounting frame 8 rotates around the center line of the pin 4, which is line segment HK, SM⊥HK, and line segment HK and line segment SM form a plane JHKG. Among them, line segment JG represents the upper frame 601 of the support frame 6, line segment JG is parallel to line segment HK, and line segment JH is parallel to line segment SM and line segment KG. The angle ∠ZSG between line segment TZ and line segment JG is an acute angle and is set to β, that is, the angle between the upper side beam 801 and the upper frame 601, which is adjusted by the flip motor 7. Line segment SM is projected in the horizontal plane passing through line segment HK to obtain line segment PM, and the angle ∠SMP between line segment PM and SM is set to α, which is the angle between the support frame 6 and the horizontal plane, which is adjusted by the reversing motor 10. Taking the line segment SZ as an example, in the plane ZSG, draw a perpendicular line from point Z to the line segment SG, and its perpendicular point is U. Plane ZSG is actually the plane swept by the upper side beam 801 when it rotates in the support frame 6. This plane is perpendicular to the plane JHKG composed of the center line of the pin shaft 4 and the upper frame 601; and since the line segment ZU is perpendicular to the line segment SG, the line segment ZU is perpendicular to any line segment in the plane JHKG. In the plane JHKG, find the perpendicular point N of U on the line segment HK to form the line segment UN, and the line segment ZU⊥UN. Project from point U to the horizontal plane PMK, and the projection point R is obtained. Since the upper frame 601 remains horizontal during the rotation of the support frame 6, that is, the line segment JG remains horizontal, the projection of the line segment SU on it on the horizontal plane PMK is the line segment PR, and the length of the line segment PR is L PR The length of line segment SU is L SU Equal, that is, L PR =L SUAt the same time, line segments SU, UR, PR and SP form a vertical plane SURP perpendicular to the horizontal plane PRNM. The projection of line segment ZU on the horizontal plane PRNM is line segment QR, and the projection of line segment UN on the horizontal plane PRNM is line segment RN. Since line segment ZU⊥UN and line segment ZU is perpendicular to plane JHKG, line segment RN and line segment QR are on the same straight line, and line segment RN is parallel to line segment PM.

[0063] Since line segment JG is parallel to line segment HK, the projection line segment PR of line segment SU on the horizontal plane is also parallel to line segment HK. Since SM⊥HK, PM⊥HK, thus PR⊥PM, PR⊥RN. Since plane ZSG is not a horizontal plane, the lengths of line segments ZU and RQ are not equal. In plane ZURQ, draw a perpendicular line from point Z to line segment RU, with its perpendicular point W, which is located on the extension line of line segment RU. Since RU⊥RQ and ZW⊥RU, line segment ZW is parallel to line segment RQ and their lengths are equal, that is, L ZW =L RQ .

[0064] The commutation motor 10 adjusts the angle ∠SMP, ∠SMP=α, and the flip motor 7 adjusts the angle ∠ZSG, ∠ZSG=β. According to the length of the upper side beam 801, the length L of the line segment ZS ZS It is known that it is 1 / 2 of the total length of the upper side beam. The length of line segment SU is L SU YesL SU =L ZS Cosβ, length L of line segment ZU ZU YesL ZU =L ZS Sinβ. Since line segment PR is the projection of line segment SU and the two are parallel to each other, their lengths are equal, that is, L SU =L PR . Since line segment UN is parallel to line segment SM, that is, UN / / SM, the angle between line segment UN and line segment RN is ∠UNR = ∠SMP = α. In plane ZURQ, ∠NUR = 90° - α; since ZU⊥UN, ∠WUZ = 90° - ∠NUR = α; the length of line segment ZW is L ZW YesL ZW =L ZU Sinα, that is, L ZW =L ZS SinβSinα, L ZW =L RQ , L PR =L SU =L ZS Cosβ. If ∠RPQ=δ, then but It follows from this

[0065] Similarly, ∠RPQ is the angle between the projection of the line segment SZ on the horizontal plane PRNM and the center line of the pin 4 (i.e., line segment HK). If the projection is consistent with the above-mentioned wind direction, the upper and lower side beams of the mounting frame 8 are parallel to the wind direction to reduce the windward surface area of ​​the photovoltaic panel 9 in the mounting frame 8. After the wind direction and wind force sensor 13 detects the wind direction, the controller calculates the angle δ between the wind direction in the horizontal plane and the center line of the pin 4, and uses the reversing motor 10 to monitor and control the angle α between the support frame 6 and the horizontal plane in real time. β can be obtained by the above formula, and the controller controls and monitors the rotation angle of each flip motor 7, and adjusts the angle ∠ZSG between the side beam 801 and the upper frame 601 to the calculated angle β.

[0066] In summary, no matter what the photovoltaic panel 9 is like Fig.14 The orientation shown is still as Fig.16 The angle (acute angle) β between the upper side beam 801 and the upper frame 601 can be obtained by the formula Calculate it.

[0067] Since the pin sleeve 2, the pin shaft 4 and the front and rear roofs are cosymmetrical, if the above α is equal, the support frame 6 is mirror-symmetrical when located on the upper side of the front roof 101 and the upper side of the rear roof 102, and the calculation and derivation process of β is the same, and it can also be obtained that Therefore, the calculation process will not be repeated here.

[0068] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A reversible graphene-coated photovoltaic panel system, characterized in that include: A pin sleeve (2) is arranged at the connection between the front and rear roofs of a house (1), the pin sleeve (2) is arranged along the axial direction of the connection, a pin shaft (4) is rotatably fitted in the pin sleeve (2), a support frame (6) is arranged on one side of the pin sleeve (2), the pin shaft (4) is connected to the support frame (6), a plurality of photovoltaic panels (9) are arranged in the support frame (6) and rotate around the symmetric center line thereof, and the support frame (6) is suitable for being parallelly attached to the front and rear roofs.

2. The switchable graphene-coated photovoltaic panel system according to claim 1, characterized in that: The pin sleeve (2) is provided with a plurality of notches (3) along the axial direction, and a connecting rod (5) is rotatably fitted in each notch (3). One end of the connecting rod (5) is connected to a pin shaft (4), and the other end is connected to a support frame (6). One end of the pin shaft (4) is drivingly connected to an adjacent reversing motor (10).

3. The switchable graphene-coated photovoltaic panel system according to claim 2, characterized in that: The support frame (6) comprises an upper frame (601) adjacent to the pin sleeve (2) and a lower frame (602) away from the pin sleeve (2); a plurality of upper through holes (605) are evenly distributed along the axial direction on the side wall of the upper frame (601) adjacent to the pin sleeve (2); a plurality of lower blind holes (606) are evenly distributed along the axial direction on the inner side wall of the lower frame (602) adjacent to the pin sleeve (2); each upper through hole (605) and the corresponding lower blind hole (606) are co-symmetrically centered ; An upper rotating shaft (14) is rotatably fitted in each upper through hole (605), and a lower rotating shaft (15) is rotatably fitted in each lower blind hole (606); one end of each photovoltaic panel (9) is connected to the adjacent upper rotating shaft (14), and the other end is connected to the adjacent lower rotating shaft (15); one end of each upper rotating shaft (14) away from the photovoltaic panel (9) extends out of the upper through hole (605) and is drivingly connected to the corresponding flip motor (7) on the upper frame (601).

4. The switchable graphene-coated photovoltaic panel system according to claim 3, characterized in that: The photovoltaic panel (9) is fixedly arranged in an installation frame (8), and the installation frame (8) includes an upper side beam (801) adjacent to the upper frame (601) and a lower side beam (804) adjacent to the lower frame (602). One end of each photovoltaic panel (9) is connected to an adjacent upper rotating shaft (14) through the upper side beam (801), and the other end is connected to an adjacent lower rotating shaft (15) through the lower side beam (804).

5. The switchable graphene-coated photovoltaic panel system according to claim 4, characterized in that It also includes: a controller, a wind direction and wind force sensor (13), and the controller is signal-connected with the wind direction and wind force sensor (13), the reversing motor (10) and the flipping motor (7).

6. A working method of a switchable graphene-coated photovoltaic panel system according to claim 5, characterized in that The following steps are involved: a. The reversing motor (10) drives the support frame (6) to rotate around the center line of the pin shaft (4) and move away from the roof against which it is attached; b. The support frame (6) rotates to a set angle at or above the horizontal state, and the flip motor (7) drives each photovoltaic panel (9) to rotate and flip over; c. The support frame (6) rotates around the center line of the pin shaft (4) and abuts against the roof on the other side.

7. The working method of the switchable graphene coating photovoltaic panel system according to claim 6, characterized in that: When the support frame (6) is rotated to a preset angle range that is located at or above the horizontal state, each photovoltaic panel (9) is perpendicular to the support frame (6).

8. The working method of the switchable graphene coating photovoltaic panel system according to claim 6, characterized in that: During the flipping process of each photovoltaic panel (9), the wind direction and wind force sensor (13) detects the wind direction, and the controller calculates the angle δ between the wind direction in the horizontal plane and the center line of the pin shaft (4). The controller calculates the angle α between the support frame (6) and the horizontal plane according to the rotation angle of the reversing motor (10). Based on the formula The angle between the side beam (801) and the upper frame (601) is adjusted in real time to the calculated angle β.

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