Photovoltaic panel sunlight tracking device

Abstract

The utility model provides a photovoltaic panel sunlight tracking device which comprises a linear driving module, a first rotation driving module, a second rotation driving module, a power switching module and a photovoltaic panel rotation support (3). The device is characterized in that the first rotation driving module is used for using a first push rod (12) to push a photovoltaic panel rotation support to rotate around a first axis within a first time interval, and comprises the first push rod (12) and a first rotating arm (13); the second rotation driving module is used for pushing the photovoltaic panel rotating bracket to rotate around a second axis by using a second push rod (22) in a second time interval, and comprises the second push rod (22) and a second rotating arm (23); and the power switching module is used for softly switching the power output to the first push rod (12) to the second push rod (22) in a switching time interval, and comprises a first sliding block (11), a second sliding block (21) and a sliding block shifting piece (42). The device is simple in structure, high in tracking efficiency, low in cost and long in service life.

Description

Technical Field

[0001] The utility model relates to the field of photovoltaic power generation, in particular to a photovoltaic panel sunlight tracking device. Background Art

[0002] Designing photovoltaic panels for sunlight tracking can effectively increase the intensity of sunlight received by a single photovoltaic panel, thereby improving the power generation efficiency of a single photovoltaic panel.

[0003] The solar tracking system used by photovoltaic panels is divided into two basic types: single-axis and dual-axis. The single-axis solar tracking system tracks the direction of the sun in pitch or azimuth, while the dual-axis solar tracking system tracks the direction of the sun in both pitch and azimuth. Although the dual-axis solar tracking system can achieve better power generation efficiency than the single-axis solar tracking system, due to the high cost of the dual-axis solar tracking system, the overall cost performance is not as good as the single-axis solar tracking system. Therefore, the mainstream product on the market is the single-axis solar tracking system.

[0004] Generally, installing a solar tracking system will increase the initial cost of the project by about 2% to 10%. Compared with fixed installation, the average power generation of photovoltaic panels using a single-axis solar tracking system can be increased by about 20%, and the average power generation of photovoltaic panels using a dual-axis solar tracking system can be increased by about 30%. However, for most projects, a photovoltaic power generation system using a single-axis solar tracking system can recover the increased initial cost of installing the system faster than a power generation system using a dual-axis solar tracking system.

[0005] Here are some of the solar tracking technologies used in photovoltaic panels that are disclosed in the patent application field:

[0006] Application No. 202222034833.2, an automatic light-chasing device for solar panels, comprising: a platform plate (10), a slide rail plate (7) and a shading square tube (1), one end of the platform plate is connected to the ground via a movable screw (11), the platform plate is hinged to one end of the slide rail plate, a solar panel is fixed on the slide rail plate, and the shading square tube is fixed on the top of the slide rail plate; a horizontal steering device and a height lifting device for changing the angle of the slide rail plate are fixed on the platform plate.

[0007] Application No. 202211307440.2, a photovoltaic light-chasing system and light-chasing method, the system includes a louver-type photovoltaic module, a light-chasing drive unit and a control unit; the louver-type photovoltaic module includes a profile base, an angle aluminum bracket and a photovoltaic module; the light-chasing drive unit includes a light-chasing push rod, a light-chasing push block, a motor, a motor brake, a slide, a slide fixing, a slider, a connecting block, a light-chasing bracket, a first photoresistor, and a second photoresistor; the control device is connected to the motor, the motor brake, the first photoresistor, and the second photoresistor, and is used to control the motor to make the photovoltaic component receive light at an optimal position. The utility model realizes light-chasing through a louver-type photovoltaic module, a light-chasing drive unit and a control unit, which improves the overall power generation of the component under the condition that the unit light-receiving area remains unchanged. The small-scale component composed of small pieces of monocrystalline silicon cells welded and packaged greatly reduces the safety hazards caused by wind resistance. The use of PET layer as the surface packaging material of the component optimizes the weight problem of the photovoltaic component.

[0008] Application No. 201620213130.8, a new type of photovoltaic solar panel capable of tracking light, including a bottom fixed base, a battery array, a battery pack and an adjustable frequency motor, the bottom fixed base is provided with a gear bracket, the gear bracket is provided with a large gear, the large gear is provided with a battery panel housing bracket, the battery panel housing is provided on the battery panel housing bracket, the battery array is provided on the upper surface of the battery panel housing, the battery pack is provided on the back of the battery panel housing, the lower end of the battery pack is provided with an electric power output port, the bottom fixed base is provided with the adjustable frequency motor, and a small gear is provided on the output shaft of the adjustable frequency motor and below the large gear. The beneficial effect is that the solar panel can always face the sun, further improving the utilization rate of solar energy and high photoelectric conversion efficiency.

[0009] The disadvantages of existing photovoltaic panel tracking technology are: the dual-axis tracking system has a complex structure, high cost, and short service life, while the single-axis tracking system has low efficiency and high cost.

[0010] The utility model provides a photovoltaic panel sunlight tracking device, which is used to overcome at least one of the shortcomings of the existing photovoltaic panel sunlight tracking technology, such as complex structure, high cost, low efficiency and short life. Summary of the invention

[0011] The utility model provides a photovoltaic panel sunlight tracking device, which is used to overcome at least one of the shortcomings of the existing photovoltaic panel sunlight tracking technology, such as complex structure, high cost, low efficiency and short life.

[0012] The utility model provides a photovoltaic panel sunlight tracking method, comprising the following steps:

[0013] Step S110, using a first push rod to push the photovoltaic panel rotating bracket to rotate around a first axis within a first time interval;

[0014] Step S120, soft-switching the power output to the first push rod to the second push rod within the switching time interval;

[0015] Step S130, using a second push rod to push the photovoltaic panel rotating bracket to rotate around a second axis within a second time interval;

[0016] The switching time interval is between the first time interval and the second time interval;

[0017] The first axis and the second axis both pass through the first rotation support point, and the angle between the first axis and the second axis is greater than 0 degrees and less than 90 degrees.

[0018] The utility model provides a photovoltaic panel sunlight tracking device, comprising:

[0019] A linear drive module, a first rotation drive module, a second rotation drive module, a power switching module, and a photovoltaic panel rotation bracket (3); wherein:

[0020] A linear drive module, used for providing a driving force for the photovoltaic panel rotating bracket (3), comprising a screw rod (41), a first slider (11) and a second slider (21);

[0021] A first rotation drive module, used for using a first push rod (12) to push the photovoltaic panel rotation bracket to rotate around a first axis within a first time interval, comprising a first push rod (12) and a first rotation arm (13); wherein one end of the first rotation arm (13) is rotationally connected to the fixed frame (4), and the other end is connected to the third rotation support member (33);

[0022] A second rotation drive module, used for driving the photovoltaic panel rotation bracket to rotate around a second axis using a second push rod (22) within a second time interval, comprising a second push rod (22) and a second rotation arm (23); wherein one end of the second rotation arm (23) is rotationally connected to the fixed frame (4), and the other end is connected to the second rotation support member (32);

[0023] A power switching module, used for softly switching the power output to the first push rod (12) to the second push rod (22) within a switching time interval, comprising a first slider (11), a second slider (21) and a slider shifter (42);

[0024] A photovoltaic panel rotating bracket (3) is used to drive the photovoltaic panel to rotate around a first axis or around a second axis, and is rotationally connected to the second rotating arm (23), the first rotating arm (13) and the support column (44);

[0025] The switching time interval is between the first time interval and the second time interval;

[0026] The first axis and the second axis both pass through the first rotation support point, and the angle between the first axis and the second axis is greater than 0 degrees and less than 90 degrees.

[0027] The utility model provides a photovoltaic panel sunlight tracking device, which can overcome at least one of the shortcomings of the existing photovoltaic panel sunlight tracking technology, such as complex structure, high cost, low efficiency and short life. It has a simple structure, high tracking efficiency, low cost and long service life.

[0028] Other features and advantages of the present invention will be described in the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A flow chart of a photovoltaic panel sunlight tracking method provided for a specific implementation of the utility model;

[0030] Figure 2 This is a schematic diagram of a first rotation driving module for rotating around a first axis provided in a specific implementation manner of the utility model;

[0031] Figure 3 A schematic diagram of a power switching module according to a specific embodiment of the present utility model;

[0032] Figure 4 This is a schematic diagram of a second rotation drive module for rotating around a second axis according to a specific implementation of the utility model.

[0033] In the figure, 11, first slider; 12, first push rod; 13, first rotating arm;

[0034] 21. second slider; 22. second push rod; 23. second rotating arm;

[0035] 3. Photovoltaic panel rotating bracket; 31. First rotating support member; 32. Second rotating support member; 33. Third rotating support member;

[0036] 4. Fixed frame; 41. Screw rod; 412. Right end polished rod area; 413. Left end polished rod area; 42. Slider puller; 43. Slide groove edge strip; 44. Support column; 45. Motor;

[0037] 5. Daylight tracking control module. DETAILED DESCRIPTION

[0038] The utility model provides a photovoltaic panel sunlight tracking device, which is used to overcome at least one of the shortcomings of the existing photovoltaic panel sunlight tracking technology, such as complex structure, high cost, low efficiency and short life.

[0039] The basic idea of ​​the utility model is: take the rotation support point O as the first rotation support point, take the rotation support point A as the second rotation support point, and take the line OA connecting the points O and A as the first axis; take the rotation support point O as the first rotation support point, take the rotation support point B as the third rotation support point, and take the line OB connecting the points O and B as the second axis;

[0040] The first axis and the second axis both pass through the first rotation support point O, and the angle between the first axis and the second axis is greater than 0 degrees and less than 90 degrees.

[0041] In the process of the sun rising in the morning, the photovoltaic panel rotates around the first axis. Compared with the single-axis sunlight tracking system that rotates around the same axis in the morning and afternoon, the angle between the first axis OA and the incident angle of sunlight provided by the utility model is closer to vertical, and the photovoltaic panel can obtain higher light power;

[0042] During the afternoon when the sun sets, the photovoltaic panel rotates around the second axis. Compared with the single-axis sunlight tracking system that rotates around the same axis in the morning and afternoon, the angle between the second axis OB and the incident angle of sunlight provided by the utility model is closer to vertical, and the photovoltaic panel can obtain higher light power.

[0043] Compared with the single-axis sunlight tracking system, the sunlight tracking system provided by the utility model has higher power generation efficiency;

[0044] Compared with the dual-axis sunlight tracking system, the sunlight tracking system provided by the utility model has a simpler structure and lower cost.

[0045] In order to make the purpose, technical solution and advantages of the utility model more clear, the specific implementation of the utility model will be described in detail below with reference to the accompanying drawings. It should be noted that the specific implementation and features in the specific implementation in this application can be combined with each other arbitrarily without conflict.

[0046] The method and device provided by the utility model are described below with reference to the accompanying drawings.

[0047] Specific implementation method 1: an example of a photovoltaic panel sunlight tracking method

[0048] The utility model provides a photovoltaic panel sunlight tracking method for specific implementation, see Figure 1 As shown, the following steps are included:

[0049] Step S110, using a first push rod to push the photovoltaic panel rotating bracket to rotate around a first axis within a first time interval;

[0050] Step S120, soft-switching the power output to the first push rod to the second push rod within the switching time interval;

[0051] Step S130, using a second push rod to push the photovoltaic panel rotating bracket to rotate around a second axis within a second time interval;

[0052] The switching time interval is between the first time interval and the second time interval;

[0053] The first axis and the second axis both pass through the first rotation support point, and the angle between the first axis and the second axis is greater than 0 degrees and less than 90 degrees.

[0054] The method provided in the specific implementation manner of the utility model is used to adjust the orientation of the photosensitive surface of the photovoltaic panel according to the irradiation direction of the sunlight, thereby increasing the irradiation power of the sunlight received by the photovoltaic panel, thereby increasing the power generation power of the photovoltaic panel.

[0055] The first time interval is in the morning time period of a day, for example, between 8 am and 11 am;

[0056] The switching time interval is within the noon time period of a day, for example, between 11 am and 1 pm;

[0057] The second time interval is in the afternoon of a day, for example, between 1 pm and 5 pm.

[0058] The method of driving the photovoltaic panel rotating bracket to rotate around the first or second axis includes:

[0059] Using a sunlight tracking control module to control the rotation mode and rotation parameters of the photovoltaic panel rotating bracket around the first or second axis;

[0060] The rotation mode includes continuous rotation or step-by-step rotation;

[0061] In the continuous rotation mode, the photovoltaic panel rotating bracket rotates continuously around the first or second axis from a starting angle to a terminal angle;

[0062] In the step-by-step rotation mode, the photovoltaic panel rotating bracket rotates around the first or second axis in N step angles from the starting angle to the ending angle, and pauses for a dwell time after each step angle, and then rotates to the next step angle;

[0063] The rotation parameters include at least one of a rotation start angle, a rotation start time, a rotation end angle and a rotation end time; N is a natural number greater than 1.

[0064] The power output to the first push rod is softly switched to the second push rod within the switching time interval, wherein the soft switching means that there is a time sub-interval within the switching time interval, and the power is output to the first and second push rods at the same time within the time sub-interval.

[0065] Specifically, the first push rod is used to push the photovoltaic panel rotating bracket to rotate around the first axis within the first time interval, see Figure 2 As shown;

[0066] The first rotation support point is also referred to as point O, and is the rotation center point of the first rotation support member (31). The first rotation support member (31) is used to realize a rotation connection between the photovoltaic panel rotation bracket (3) and the support column (44);

[0067] The second rotation support point is also referred to as point A, and is the rotation center point of the second rotation support member (32). The second rotation support member (32) is used to realize rotation connection between the photovoltaic panel rotation bracket (3) and the swing end of the second rotation arm (23);

[0068] The third rotation support point is also referred to as point B, and is the rotation center point of the third rotation support member (33). The third rotation support member (33) is used to realize rotation connection between the photovoltaic panel rotation bracket (3) and the swing end of the first rotation arm (13);

[0069] The first axis is the line OA between point O and point A;

[0070] The process of using the first push rod to push the photovoltaic panel rotating bracket to rotate around the first axis includes:

[0071] The first sliding block (11) is used to push the first push rod (12), and the first push rod (12) pushes the first rotating arm (13) to swing, one end of the first rotating arm (13) is rotatably connected to the fixed frame (4), and the other end of the first rotating arm (13) is connected to the third rotating support member (33);

[0072] The first rotating arm (13) transmits the driving force to the photovoltaic panel rotating bracket (3) through the third rotating support member (33), so that the photovoltaic panel rotating bracket (3) rotates around the first axis OA.

[0073] Specifically, the power output to the first push rod is softly switched to the second push rod within the switching time interval, see Figure 3 As shown;

[0074] The first slider (11) is used to drive the first push rod (12), the second slider (21) is used to drive the first push rod (22), the screw rod (41) comprises a threaded area and a polished rod area, the polished rod area is respectively located at the left and right ends of the threaded area, the threaded area is used to drive the first slider (11) and the second slider (21) to move, and the polished rod area is used to achieve the separation of the first slider (11) or the second slider (21) from the power;

[0075] When the first slide block (11) moves from right to left along the screw rod (41) to the smooth rod area (413) at the left end of the threaded area, see Figure 2 As shown, before the driver power is disengaged, the polished rod area (412) located at the right end of the threaded area is pushed, see Figure 4 As shown, the second slider (21) is close to the threaded area on its left side, and after the second slider (21) moves from right to left for a soft switching distance under the drive of the threaded area, the first slider (11) is separated from the drive of the threaded area and enters the polished rod area (413) at the left end of the threaded area;

[0076] The method of pushing the second sliding block (21) in the polished rod area (412) at the right end of the threaded area toward the threaded area on the left side thereof comprises:

[0077] The first slider (11) pushes the slider pusher (42), and the slider pusher (42) pushes the second slider (21) toward the threaded area on its left side.

[0078] The slider pusher (42) is arranged in a slide groove included in the slide groove edge strip (43), and the first slider (11) and the second slider (21) both move along the slide groove.

[0079] Specifically, the second push rod is used to push the photovoltaic panel rotating bracket to rotate around the second axis within the second time interval, see Figure 4 As shown;

[0080] The second axis is the line OB between point O and point B;

[0081] The process of using the second push rod to push the photovoltaic panel rotating bracket to rotate around the second axis includes:

[0082] The second push rod (22) is pushed by the second slider (21), and the second push rod (22) pushes the second rotating arm (23) to swing, one end of the second rotating arm (23) is rotatably connected to the fixed frame (4), and the other end of the second rotating arm (23) is connected to the second rotating support member (32);

[0083] The second rotating arm (23) transmits the driving force to the photovoltaic panel rotating bracket (3) through the second rotating support member (32), so that the photovoltaic panel rotating bracket (3) rotates around the second axis OB.

[0084] The photovoltaic panel rotating bracket includes any one of a flat plate shape, a triangle shape and a three-dimensional shape.

[0085] Use a power switch to switch power from the same driver between the first and second actuators.

[0086] The power output to the first push rod and the power output to the second push rod come from the same power source;

[0087] In this specific implementation, the power source is a motor.

[0088] The sunlight tracking control module controls the rotation direction of the motor, or controls the rotation speed and rotation direction of the motor;

[0089] The motor drives the screw to rotate, and the threaded area on the screw drives the slider to move;

[0090] The moving speed of the slider is controlled by controlling the rotation speed of the screw rod, thereby controlling the rotation speed of the photovoltaic panel rotating bracket;

[0091] The angle of the photovoltaic panel rotation bracket can be adjusted by adjusting the position of the slider.

[0092] The method provided in this specific implementation mode, wherein:

[0093] The method of using the first push rod to push the photovoltaic panel rotating bracket to rotate around the first axis specifically includes:

[0094] A first rotation support point is set at point O of the photovoltaic panel rotation support, and a second rotation support point is set at point A of the photovoltaic panel rotation support, and a line connecting the rotation center points of the first and second rotation support points constitutes a first axis OA;

[0095] The photovoltaic panel rotating bracket is rotatably connected to the swing end of the first rotating arm through the second rotating support point;

[0096] The force-bearing end of the first push rod is rotationally connected to the first slider pushed by the screw rod, the force-output end of the first push rod is rotationally connected to the force-bearing point of the first rotating arm, the force-bearing point of the first rotating arm is located between its rotating connection end and its swinging end, the rotating connection end of the first rotating arm is rotationally connected to the photovoltaic panel base bracket, and the swinging of the first rotating arm realizes the rotation of the photovoltaic panel rotating bracket around the first axis OA;

[0097] The method of using the second push rod to push the photovoltaic panel rotating bracket to rotate around the second axis specifically includes:

[0098] A first rotation support point is set at point O of the photovoltaic panel rotation support, and a third rotation support point is set at point B of the photovoltaic panel rotation support, and a line connecting the rotation center points of the first and third rotation support points constitutes a second axis OB;

[0099] The photovoltaic panel rotating bracket is rotationally connected to the swing end of the second rotating arm through the third rotating support point;

[0100] The force-bearing end of the second push rod is rotationally connected with the second sliding block pushed by the screw rod, the output end of the second push rod is rotationally connected with the force point of the second rotating arm, the force point of the second rotating arm is located between its rotating connection end and its swinging end, and the rotating connection end of the second rotating arm is rotationally connected with the photovoltaic panel base bracket. The swinging of the second rotating arm realizes the rotation of the photovoltaic panel rotating bracket around the second axis OB.

[0101] The method provided in this specific implementation mode, wherein:

[0102] The method of setting a first rotation support point at point O of the photovoltaic panel rotation support and setting a second rotation support point at point A of the photovoltaic panel rotation support comprises:

[0103] Using the photovoltaic panel frame as the photovoltaic panel rotation bracket, determining the position of point O on the photovoltaic panel frame as the position for installing the first rotation support point, and determining the position of point A on the photovoltaic panel frame as the position of the second rotation support point; or

[0104] A frame or a flat plate connected to the photovoltaic panel frame is used as a photovoltaic panel rotation bracket, a point O is determined on the frame or the flat plate as a position for installing a first rotation support point, and a point A is determined on the frame or the flat plate as a position for installing a second rotation support point;

[0105] The first rotation support point is set at point O of the photovoltaic panel rotation support, and the third rotation support point is set at point B of the photovoltaic panel rotation support, including:

[0106] Using the photovoltaic panel frame as the photovoltaic panel rotation bracket, determining the position of point O on the photovoltaic panel frame as the position for installing the first rotation support point, and determining the position of point B on the photovoltaic panel frame as the position of the third rotation support point; or

[0107] A frame or a flat plate connected to the photovoltaic panel frame is used as a photovoltaic panel rotation bracket, and the position of point O on the frame or the flat plate is determined as the position for installing the first rotation support point, and the position of point B on the frame or the flat plate is determined as the position of the third rotation support point.

[0108] At least one of the first rotation support point, the second rotation support point and the third rotation support point uses a universal joint support point.

[0109] As a specific implementation manner of the first rotation support point, the first rotation support point uses a universal joint as a rotation support point component.

[0110] The rotatable part of the first rotation support point located at point O is connected to the photovoltaic panel frame or is connected to the photovoltaic panel through any one of a frame and a flat plate.

[0111] The frame includes a plane frame or a three-dimensional frame;

[0112] The photovoltaic panel frame, the frame connecting the frame and the flat plate all realize the structural connection between the photovoltaic panel and the rotating drive structure.

[0113] The non-rotatable part of the first rotation support point located at point O, such as the outer shell of the universal joint support point, is mounted on the mounting base of the photovoltaic panel through a support member.

[0114] The method provided in this specific implementation mode, wherein:

[0115] The soft switching of the power output to the first push rod to the second push rod within the switching time interval specifically includes:

[0116] A threaded area is provided in the middle part of the screw rod, and a bare rod area without threads is provided at the left and right ends of the threaded area respectively;

[0117] Before the first time interval, the threaded area of ​​the lead screw is used to drive the second slider corresponding to the second push rod to move to the smooth rod area at the right end of the threaded area, so that the second slider is disconnected from the driver power;

[0118] In the first time interval, the threaded area is used to drive the first slider corresponding to the first push rod to move from right to left along the screw rod, and the second slider is kept disconnected from the driver power in the smooth rod area at the right end of the threaded area;

[0119] In the switching time interval, before the first slider moves from right to left along the lead screw to the polished rod area at the left end of the threaded area and is disconnected from the driver power, the second slider in the polished rod area at the right end of the threaded area is pushed toward the threaded area on its left side. After the second slider moves from right to left for a soft switching distance under the drive of the threaded area, the first slider is disconnected from the drive of the threaded area and enters the polished rod area at the left end of the threaded area.

[0120] In the second time interval, the threaded area is used to drive the second slider corresponding to the second push rod to move from right to left along the screw rod, and the first slider remains disconnected from the driver power in the bare rod area at the left end of the threaded area.

[0121] A polished rod area without threads is respectively provided at both ends of the lead screw, and the threads in the threaded area are used to move a slider that does not need to generate a driving force into the polished rod area;

[0122] In the first time interval, the second slider that pushes the second push rod is separated from the threaded portion of the screw rod by using the slider pusher, so that the threaded portion of the screw rod drives the first slider to move, and the movement of the first slider drives the first push rod to move;

[0123] In the second time interval, the slider is used to disengage the first slider that pushes the first push rod from the threaded portion of the screw rod, so that the threaded portion of the screw rod drives the second slider to move, and the movement of the second slider drives the second push rod to move.

[0124] The drive includes a lead screw, or includes a lead screw and a motor.

[0125] The method of using the threaded area to drive the first slider corresponding to the first push rod to move from right to left along the screw rod in the first time interval specifically includes:

[0126] The first slider drives the first push rod, the first push rod drives the first rotating arm, and the first rotating arm drives the photovoltaic panel rotating bracket to rotate around the first axis OA.

[0127] In the second time interval, the threaded area is used to drive the second slider corresponding to the second push rod to move from right to left along the screw rod, specifically including:

[0128] The second slider drives the second push rod, the second push rod drives the second rotating arm, and the second rotating arm drives the photovoltaic panel rotating bracket to rotate around the second axis OB.

[0129] Specifically, the driver is a screw rod (41).

[0130] The method provided in this specific implementation mode, wherein:

[0131] The method of pushing the second slider in the polished rod area at the right end of the threaded area toward the threaded area on its left side before the first slider moves from right to left along the lead screw to the polished rod area at the left end of the threaded area and is disconnected from the driver power during the switching time interval specifically includes:

[0132] Before the first slider moves from right to left along the lead screw to the polished rod area at the left end of the threaded area and disengages from the driver power, the first slider is used to push the slider shifter to push the second slider in the polished rod area at the right end of the threaded area toward the threaded area on its left side, so that the second slider enters a thread-driven state.

[0133] The slider member includes any one of a push rod, a paddle and a spring.

[0134] The slider pusher is pushed by the first slider to drive the second slider in the polished rod area at the right end of the threaded area toward the threaded area on its left side. Then, the second slider moves to the left side of the threaded area under the action of the thread in the threaded area.

[0135] As a specific implementation of switching the driving force from the second push rod to the first push rod, the method includes:

[0136] In the switching time interval, before the second slider moves from left to right along the lead screw to the polished rod area at the right end of the threaded area and is disconnected from the driver power, the first slider in the polished rod area at the left end of the threaded area is pushed toward the threaded area on its right side. After the first slider moves from left to right for a soft switching distance under the drive of the threaded area, the second slider is disconnected from the drive of the threaded area and enters the polished rod area at the right end of the threaded area.

[0137] The method of pushing the first slider in the polished rod area at the left end of the threaded area toward the threaded area on the right side thereof before the second slider moves from left to right along the lead screw to the polished rod area at the right end of the threaded area and is disconnected from the driver power during the switching time interval specifically includes:

[0138] Before the second slider moves from left to right along the lead screw to the polished rod area at the right end of the threaded area and disengages from the driver power, the second slider is used to push the slider shifter to push the first slider in the polished rod area at the left end of the threaded area toward the threaded area on its right side, so that the first slider enters a thread-driven state.

[0139] Before the first time interval, the initial inclination angle of the photovoltaic panel is set to determine the starting angle of rotation of the photovoltaic panel around the first axis OA, specifically including:

[0140] The first slider is driven to move from left to right to push the first push rod, and the first push rod pushes the first rotating arm to rotate, and the swing end of the first rotating arm drives the first axis OA of the photovoltaic panel rotating bracket to rotate, thereby driving the photovoltaic panel to rotate until the photovoltaic panel rotates around the first axis OA to a specific initial inclination angle;

[0141] Specifically, the initial inclination angle is toward the incident direction of the morning sunlight to increase the sunlight radiation power received by the photovoltaic panel.

[0142] In the first time interval, as the direction of sunlight changes, the first slider is driven to move from right to left, so as to push the photovoltaic panel to rotate around the first axis OA and gradually adjust the inclination angle of the photovoltaic panel from the initial inclination angle to the inclination angle following the incident direction of sunlight;

[0143] During the noon time period, that is, during the switching time interval, the power switching is completed so that the photovoltaic panel is oriented toward the afternoon sunlight during the second time interval.

[0144] In the second time interval, as the sunlight direction changes, the second slider is driven to move from right to left, pushing the photovoltaic panel to rotate around the second axis OB and adjusting the inclination of the photovoltaic panel to follow the incident direction of afternoon sunlight.

[0145] After the second time interval, the second slider moves from left to right to drive the photovoltaic panel to reset to the minimum deflection angle state of the photovoltaic panel, which corresponds to the switching time interval, usually the inclination angle of the photovoltaic panel during the noon time period. Then, the initial inclination angle setting process is entered, in which the first slider is driven to move from left to right.

[0146] Specifically, the driver is a screw rod (41).

[0147] Specific implementation method 2: Example of a photovoltaic panel sunlight tracking device

[0148] The utility model provides a photovoltaic panel sunlight tracking device specific implementation, including:

[0149] A linear drive module, a first rotation drive module, a second rotation drive module, a power switching module, and a photovoltaic panel rotation bracket (3); characterized in that:

[0150] A linear drive module, used for providing a driving force for the photovoltaic panel rotating bracket (3), comprising a screw rod (41), a first slider (11) and a second slider (21);

[0151] A first rotation drive module, used for using a first push rod (12) to push the photovoltaic panel rotation bracket to rotate around a first axis within a first time interval, comprising a first push rod (12) and a first rotation arm (13); wherein one end of the first rotation arm (13) is rotationally connected to the fixed frame (4), and the other end is connected to the third rotation support member (33);

[0152] A second rotation drive module, used for driving the photovoltaic panel rotation bracket to rotate around a second axis using a second push rod (22) within a second time interval, comprising a second push rod (22) and a second rotation arm (23); wherein one end of the second rotation arm (23) is rotationally connected to the fixed frame (4), and the other end is connected to the second rotation support member (32);

[0153] A power switching module, used for softly switching the power output to the first push rod (12) to the second push rod (22) within a switching time interval, comprising a first slider (11), a second slider (21) and a slider shifter (42);

[0154] A photovoltaic panel rotating bracket (3) is used to drive the photovoltaic panel to rotate around a first axis or around a second axis, and is rotationally connected to the second rotating arm (23), the first rotating arm (13) and the support column (44);

[0155] The switching time interval is between the first time interval and the second time interval;

[0156] The first axis and the second axis both pass through the first rotation support point, and the angle between the first axis and the second axis is greater than 0 degrees and less than 90 degrees.

[0157] The specific implementation of the utility model provides a photovoltaic panel sunlight tracking method, which is used to adjust the orientation of the photosensitive surface of the photovoltaic panel according to the irradiation direction of sunlight, thereby increasing the sunlight irradiation power received by the photovoltaic panel, thereby increasing the power generation power of the photovoltaic panel.

[0158] The first time interval is in the morning time period of a day, for example, between 8 am and 11 am;

[0159] The switching time interval is within the noon time period of a day, for example, between 11 am and 1 pm;

[0160] The second time interval is in the afternoon of a day, for example, between 1 pm and 5 pm.

[0161] The power output to the first push rod is softly switched to the second push rod within the switching time interval, wherein the soft switching means that there is a time sub-interval within the switching time interval, and the power is output to the first and second push rods at the same time within the time sub-interval.

[0162] Specifically, the first push rod is used to push the photovoltaic panel rotating bracket to rotate around the first axis within the first time interval, see Figure 2 As shown;

[0163] The first rotation support point is also referred to as point O, and is the rotation center point of the first rotation support member (31). The first rotation support member (31) is used to realize a rotation connection between the photovoltaic panel rotation bracket (3) and the support column (44);

[0164] The second rotation support point is also referred to as point A, and is the rotation center point of the second rotation support member (32). The second rotation support member (32) is used to realize rotation connection between the photovoltaic panel rotation bracket (3) and the swing end of the second rotation arm (23);

[0165] The third rotation support point is also referred to as point B, and is the rotation center point of the third rotation support member (33). The third rotation support member (33) is used to realize rotation connection between the photovoltaic panel rotation bracket (3) and the swing end of the first rotation arm (13);

[0166] The first axis is the line OA between point O and point A;

[0167] The process of using the first push rod to push the photovoltaic panel rotating bracket to rotate around the first axis includes:

[0168] The first sliding block (11) is used to push the first push rod (12), and the first push rod (12) pushes the first rotating arm (13) to swing, one end of the first rotating arm (13) is rotatably connected to the fixed frame (4), and the other end of the first rotating arm (13) is connected to the third rotating support member (33);

[0169] The first rotating arm (13) transmits the driving force to the photovoltaic panel rotating bracket (3) through the third rotating support member (33), so that the photovoltaic panel rotating bracket (3) rotates around the first axis OA.

[0170] Specifically, the power output to the first push rod is softly switched to the second push rod within the switching time interval, see Figure 3 As shown;

[0171] The first slider (11) is used to drive the first push rod (12), the second slider (21) is used to drive the first push rod (22), the screw rod (41) comprises a threaded area and a polished rod area, the polished rod area is respectively located at the left and right ends of the threaded area, the threaded area is used to drive the first slider (11) and the second slider (21) to move, and the polished rod area is used to achieve the separation of the first slider (11) or the second slider (21) from the power;

[0172] When the first slide block (11) moves from right to left along the screw rod (41) to the smooth rod area (413) at the left end of the threaded area, see Figure 2 As shown, before the driver power is disengaged, the polished rod area (412) located at the right end of the threaded area is pushed, see Figure 4 As shown, the second slider (21) is close to the threaded area on its left side, and after the second slider (21) moves from right to left for a soft switching distance under the drive of the threaded area, the first slider (11) is separated from the drive of the threaded area and enters the polished rod area (413) at the left end of the threaded area;

[0173] The method of pushing the second sliding block (21) in the polished rod area (412) at the right end of the threaded area toward the threaded area on the left side thereof comprises:

[0174] The first slider (11) pushes the slider pusher (42), and the slider pusher (42) pushes the second slider (21) toward the threaded area on its left side.

[0175] The slider pusher (42) is arranged in a slide groove included in the slide groove edge strip (43), and the first slider (11) and the second slider (21) both move along the slide groove.

[0176] Specifically, the second push rod is used to push the photovoltaic panel rotating bracket to rotate around the second axis within the second time interval, see Figure 4 As shown;

[0177] The second axis is the line OB between point O and point B;

[0178] The process of using the second push rod to push the photovoltaic panel rotating bracket to rotate around the second axis includes:

[0179] The second push rod (22) is pushed by the second slider (21), and the second push rod (22) pushes the second rotating arm (23) to swing, one end of the second rotating arm (23) is rotatably connected to the fixed frame (4), and the other end of the second rotating arm (23) is connected to the second rotating support member (32);

[0180] The second rotating arm (23) transmits the driving force to the photovoltaic panel rotating bracket (3) through the second rotating support member (32), so that the photovoltaic panel rotating bracket (3) rotates around the second axis OB.

[0181] The photovoltaic panel rotating bracket includes any one of a flat plate shape, a triangle shape and a three-dimensional shape.

[0182] Use a power switch to switch power from the same driver between the first and second actuators.

[0183] The power output to the first push rod and the power output to the second push rod come from the same power source;

[0184] The angle of the photovoltaic panel rotation bracket can be adjusted by adjusting the position of the slider.

[0185] The device provided in this specific implementation is characterized in that:

[0186] The first rotation driving module executes the operation of using a first push rod (12) to push the photovoltaic panel rotation bracket to rotate around a first axis within a first time interval, specifically comprising:

[0187] A first rotation support point is arranged at point O of the photovoltaic panel rotation support (3), and a second rotation support point is arranged at point A of the photovoltaic panel rotation support, and a line connecting the rotation center points of the first and second rotation support points forms a first axis OA;

[0188] The photovoltaic panel rotating bracket (3) is rotationally connected to the swing end of the first rotating arm via a second rotating support member (32);

[0189] The force-bearing end of the first push rod is rotationally connected to the first slider pushed by the screw rod, the force-output end of the first push rod is rotationally connected to the force-bearing point of the first rotating arm, the force-bearing point of the first rotating arm is located between its rotating connection end and its swinging end, the rotating connection end of the first rotating arm is rotationally connected to the photovoltaic panel base bracket, and the swinging of the first rotating arm realizes the rotation of the photovoltaic panel rotating bracket around the first axis OA;

[0190] The second rotation driving module performs the operation of using a second push rod (22) to push the photovoltaic panel rotation bracket to rotate around a second axis within a second time interval, specifically comprising:

[0191] A first rotation support point is arranged at point O of the photovoltaic panel rotation support (3), and a third rotation support point is arranged at point B of the photovoltaic panel rotation support, and a line connecting the rotation center points of the first and third rotation support points forms a second axis OB;

[0192] The photovoltaic panel rotating bracket (3) is rotationally connected to the swing end of the second rotating arm via a third rotating support member (33);

[0193] The force-bearing end of the second push rod (22) is rotationally connected to the second sliding block driven by the screw rod, the force-output end of the second push rod is rotationally connected to the force-bearing point of the second rotating arm, the force-bearing point of the second rotating arm is located between its rotating connection end and its swinging end, the rotating connection end of the second rotating arm is rotationally connected to the photovoltaic panel base bracket, and the swinging of the second rotating arm enables the photovoltaic panel rotating bracket to rotate around the second axis OB.

[0194] The step of setting a first rotation support point at point O of the photovoltaic panel rotation support (3) and setting a second rotation support point at point A of the photovoltaic panel rotation support specifically comprises:

[0195] A first rotation support member (31) is arranged at point O of the photovoltaic panel rotation support (3), and a rotation center point of the first rotation support member (31) is used as a first rotation support point;

[0196] A second rotation support member (32) is arranged at point A of the photovoltaic panel rotation support, and a rotation center point of the second rotation support member (32) is used as a second rotation support point;

[0197] A line connecting the rotation center points of the first and second rotation support points forms a first axis OA.

[0198] The third rotation support point is set at point B of the photovoltaic panel rotation bracket, specifically including:

[0199] A third rotation support member (33) is arranged at point B of the photovoltaic panel rotation support, and a rotation center point of the third rotation support member (33) is used as a third rotation support point;

[0200] A line connecting the rotation center points of the first and third rotation support points forms the second axis OB.

[0201] The device provided in this specific implementation is characterized in that:

[0202] The first rotation driving module performs the operations of setting a first rotation support point at point O of the photovoltaic panel rotation support (3) and setting a second rotation support point at point A of the photovoltaic panel rotation support, specifically comprising:

[0203] Using the photovoltaic panel frame as the photovoltaic panel rotation bracket (3), determining the positions for installing the first rotation support member (31) and the second rotation support member (32) on the photovoltaic panel frame, using the rotation center point of the first rotation support member (31) as the first rotation support point position, and using the rotation center point of the second rotation support member (32) as the second rotation support point position; or

[0204] A frame or a flat plate connected to the photovoltaic panel frame is used as a photovoltaic panel rotation bracket (3), and positions for installing a first rotation support member (31) and a second rotation support member (32) are determined on the frame or the flat plate, with the rotation center point of the first rotation support member (31) being used as the first rotation support point position, and the rotation center point of the second rotation support member (32) being used as the second rotation support point position;

[0205] The second rotation driving module performs the operations of setting a first rotation support point at point O of the photovoltaic panel rotation support and setting a third rotation support point at point B of the photovoltaic panel rotation support, including:

[0206] Using the photovoltaic panel frame as the photovoltaic panel rotation bracket (3), determining the positions for installing the first rotation support member (31) and the third rotation support member (33) on the photovoltaic panel frame, using the rotation center point of the first rotation support member (31) as the first rotation support point position, and using the rotation center point of the third rotation support member (33) as the third rotation support point position; or

[0207] A frame or a flat plate connected to the photovoltaic panel frame is used as a photovoltaic panel rotation bracket (3), and positions for installing a first rotation support member (31) and a third rotation support member (33) are determined on the frame or the flat plate, with the rotation center point of the first rotation support member (31) being used as the first rotation support point position, and the rotation center point of the third rotation support member (33) being used as the third rotation support point position.

[0208] At least one of the first rotation support point, the second rotation support point and the third rotation support point uses a universal joint support point.

[0209] As a specific implementation manner of the first rotation support point, the first rotation support point uses a universal joint as a rotation support point component.

[0210] The rotatable part of the first rotation support point located at point O is connected to the photovoltaic panel frame or is connected to the photovoltaic panel through any one of a frame and a flat plate.

[0211] The frame includes a plane frame or a three-dimensional frame;

[0212] The photovoltaic panel frame, the frame connecting the frame and the flat plate all realize the structural connection between the photovoltaic panel and the rotating drive structure.

[0213] The non-rotatable part of the first rotation support point located at point O, such as the outer shell of the universal joint support point, is mounted on the mounting base of the photovoltaic panel through a support member.

[0214] The point O position is the first rotation center position, the first rotation center position is the first rotation support point, and the first rotation center position is the rotation center position of the first rotation support member (31);

[0215] The position of point A is the position of the second rotation center point, the second rotation center point is the second rotation support point, and the position of the second rotation center point is the position of the rotation center point of the second rotation support member (32);

[0216] The position of point B is the position of the third rotation center point, the third rotation center point is the third rotation support point, and the position of the third rotation center point is the position of the rotation center point of the third rotation support member (33).

[0217] The device provided in this specific implementation is characterized in that:

[0218] The power switching module performs the operation of softly switching the power output to the first push rod (12) to the second push rod (22) within the switching time interval, specifically including:

[0219] A threaded area is provided in the middle part of the screw rod (41), and a right end polished rod area (412) and a left end polished rod area (413) without threads are provided at the left and right ends of the threaded area respectively;

[0220] Before the first time interval, the threaded area of ​​the screw rod is used to drive the second slider (21) corresponding to the second push rod (22) to move to the right end polished rod area (412) at the right end of the threaded area, thereby disconnecting the second slider (21) from the driver power;

[0221] In a first time interval, the threaded area is used to drive a first slider (11) corresponding to a first push rod (12) to move from right to left along a screw rod (41), and the second slider (21) remains disconnected from the driver power at a right end polished rod area (412) at the right end of the threaded area;

[0222] In the switching time interval, before the first slider (11) moves from right to left along the lead screw (41) to the left end polished rod area (413) at the left end of the threaded area and is disconnected from the driver power, the second slider (21) located in the right end polished rod area (412) is pushed toward the threaded area on its left side, and after the second slider (21) moves from right to left for a soft switching distance under the drive of the threaded area, the first slider (11) is disconnected from the drive of the threaded area and enters the left end polished rod area (413);

[0223] In the second time interval, the threaded area is used to drive the second slider (21) corresponding to the second push rod (22) to move from right to left along the screw rod (41), and the first slider (11) remains disconnected from the driver power at the left end of the threaded area in the left end polished rod area (413).

[0224] A polished rod area without threads is respectively provided at both ends of the lead screw, and the threads in the threaded area are used to move a slider that does not need to generate a driving force into the polished rod area;

[0225] In the first time interval, the second slider that pushes the second push rod is separated from the threaded portion of the screw rod by using the slider pusher, so that the threaded portion of the screw rod drives the first slider to move, and the movement of the first slider drives the first push rod to move;

[0226] In the second time interval, the slider is used to disengage the first slider that pushes the first push rod from the threaded portion of the screw rod, so that the threaded portion of the screw rod drives the second slider to move, and the movement of the second slider drives the second push rod to move.

[0227] The drive includes a lead screw, or includes a lead screw and a motor.

[0228] The method of using the threaded area to drive the first slider corresponding to the first push rod to move from right to left along the screw rod in the first time interval specifically includes:

[0229] The first slider drives the first push rod, the first push rod drives the first rotating arm, and the first rotating arm drives the photovoltaic panel rotating bracket to rotate around the first axis OA.

[0230] In the second time interval, the threaded area is used to drive the second slider corresponding to the second push rod to move from right to left along the screw rod, specifically including:

[0231] The second slider drives the second push rod, the second push rod drives the second rotating arm, and the second rotating arm drives the photovoltaic panel rotating bracket to rotate around the second axis OB.

[0232] Specifically, the driver is a screw rod (41).

[0233] The device provided in this specific implementation is characterized in that:

[0234] The power switching module performs the operation of pushing the second slider (21) located in the right end polished rod area (412) toward the threaded area on the left side thereof before the first slider (11) moves from right to left along the lead screw (41) to the left end polished rod area (413) at the left end of the threaded area and is disconnected from the driver power, specifically comprising:

[0235] Before the first slider (11) moves from right to left along the lead screw (41) to the left end polished rod area (413) at the left end of the threaded area and is disconnected from the driver power, the first slider (11) is used to push the slider shifter (42) to push the second slider (21) in the polished rod area at the right end of the threaded area toward the threaded area on its left side, so that the second slider (21) enters a thread-driven state.

[0236] The slider member (42) comprises any one of a push rod, a paddle and a spring.

[0237] The slider pusher is pushed by the first slider to drive the second slider in the polished rod area at the right end of the threaded area toward the threaded area on its left side. Then, the second slider moves to the left side of the threaded area under the action of the thread in the threaded area.

[0238] As a specific implementation of switching the driving force from the second push rod to the first push rod, the method includes:

[0239] In the switching time interval, before the second slider moves from left to right along the lead screw to the polished rod area at the right end of the threaded area and is disconnected from the driver power, the first slider in the polished rod area at the left end of the threaded area is pushed toward the threaded area on its right side. After the first slider moves from left to right for a soft switching distance under the drive of the threaded area, the second slider is disconnected from the drive of the threaded area and enters the polished rod area at the right end of the threaded area.

[0240] The method of pushing the first slider in the polished rod area at the left end of the threaded area toward the threaded area on the right side thereof before the second slider moves from left to right along the lead screw to the polished rod area at the right end of the threaded area and is disconnected from the driver power during the switching time interval specifically includes:

[0241] Before the second slider moves from left to right along the lead screw to the polished rod area at the right end of the threaded area and disengages from the driver power, the second slider is used to push the slider shifter to push the first slider in the polished rod area at the left end of the threaded area toward the threaded area on its right side, so that the first slider enters a thread-driven state.

[0242] Before the first time interval, the initial inclination angle of the photovoltaic panel is set to determine the starting angle of rotation of the photovoltaic panel around the first axis OA, specifically including:

[0243] The first slider is driven to move from left to right to push the first push rod, and the first push rod pushes the first rotating arm to rotate, and the swing end of the first rotating arm drives the first axis OA of the photovoltaic panel rotating bracket to rotate, thereby driving the photovoltaic panel to rotate until the photovoltaic panel rotates around the first axis OA to a specific initial inclination angle;

[0244] Specifically, the initial inclination angle is toward the incident direction of the morning sunlight to increase the sunlight radiation power received by the photovoltaic panel.

[0245] In the first time interval, as the direction of sunlight changes, the first slider is driven to move from right to left, so as to push the photovoltaic panel to rotate around the first axis OA and gradually adjust the inclination angle of the photovoltaic panel from the initial inclination angle to the inclination angle following the incident direction of sunlight;

[0246] During the noon time period, that is, during the switching time interval, the power switching is completed so that the photovoltaic panel is oriented toward the afternoon sunlight during the second time interval.

[0247] In the second time interval, as the sunlight direction changes, the second slider is driven to move from right to left, pushing the photovoltaic panel to rotate around the second axis OB and adjusting the inclination of the photovoltaic panel to follow the incident direction of afternoon sunlight.

[0248] After the second time interval, the second slider moves from left to right to drive the photovoltaic panel to reset to the minimum deflection angle state of the photovoltaic panel, which corresponds to the switching time interval, usually the inclination angle of the photovoltaic panel during the noon time period. Then, the initial inclination angle setting process is entered, in which the first slider is driven to move from left to right.

[0249] Specifically, the driver is a screw rod (41).

[0250] The device provided in this specific embodiment further comprises a sunlight tracking control module (5), characterized in that:

[0251] The sunlight tracking control module (5) comprises a motor drive control circuit, and there is an electrical connection between the motor drive control circuit and the motor (45), and is used to perform the following operations:

[0252] Controlling the photovoltaic panel rotating bracket (3) to rotate around the first or second axis in any one of a continuous manner and a stepwise manner;

[0253] Controlling the rotation parameters of the photovoltaic panel rotation bracket (3);

[0254] The rotation parameter includes at least one of a rotation start angle, a rotation start time, a rotation end angle and a rotation end time.

[0255] In the continuous rotation mode, the photovoltaic panel rotating bracket rotates continuously around the first or second axis from a starting angle to a terminal angle;

[0256] In the step-by-step rotation mode, the photovoltaic panel rotating bracket rotates around the first or second axis in N step angles from a starting angle to an ending angle, pauses for a dwell time after each step angle, and then rotates to the next step angle; N is a natural number greater than 1.

[0257] In this specific embodiment, the power source is a motor (45).

[0258] The sunlight tracking control module (5) controls the rotation direction of the motor, or controls the rotation speed and rotation direction of the motor;

[0259] The motor (45) drives the screw rod (41) to rotate, and the threaded area on the screw rod (41) drives the slider to move;

[0260] The moving speed of the slider is controlled by controlling the rotation speed of the screw rod (41), thereby controlling the rotation speed of the photovoltaic panel rotation bracket (3).

[0261] The method provided in the specific implementation manner of the utility model can be implemented in whole or in part through software instructions and / or hardware circuits; the modules or units included in the device provided in the specific implementation manner of the utility model can be implemented using electronic components and corresponding structural parts.

[0262] The above is only a preferred embodiment of the utility model and is not intended to limit the scope of protection of the utility model. Any technician in the field of the utility model can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed by the utility model, but the scope of protection of the utility model shall be based on the scope defined by the attached claims.

[0263] The device provided in the specific implementation of the utility model overcomes at least one of the shortcomings of the existing photovoltaic panel sunlight tracking technology, such as complex structure, high cost, low efficiency and short life. It has a simple structure, high tracking efficiency, low cost and long service life.

Claims

1. A photovoltaic panel sunlight tracking device, comprising: A linear drive module, a first rotation drive module, a second rotation drive module, a power switching module, and a photovoltaic panel rotation bracket (3); characterized in that: A linear drive module, used for providing a driving force for the photovoltaic panel rotating bracket (3), comprising a screw rod (41), a first slider (11) and a second slider (21); A first rotation drive module, used for using a first push rod (12) to push the photovoltaic panel rotation bracket to rotate around a first axis within a first time interval, comprising a first push rod (12) and a first rotation arm (13); wherein one end of the first rotation arm (13) is rotationally connected to the fixed frame (4), and the other end is connected to the third rotation support member (33); A second rotation drive module, used for driving the photovoltaic panel rotation bracket to rotate around a second axis using a second push rod (22) within a second time interval, comprising a second push rod (22) and a second rotation arm (23); wherein one end of the second rotation arm (23) is rotationally connected to the fixed frame (4), and the other end is connected to the second rotation support member (32); A power switching module, used for softly switching the power output to the first push rod (12) to the second push rod (22) within a switching time interval, comprising a first slider (11), a second slider (21) and a slider shifter (42); A photovoltaic panel rotating bracket (3) is used to drive the photovoltaic panel to rotate around a first axis or around a second axis, and is rotationally connected to the second rotating arm (23), the first rotating arm (13) and the support column (44); The switching time interval is between the first time interval and the second time interval; The first axis and the second axis both pass through the first rotation support point, and the angle between the first axis and the second axis is greater than 0 degrees and less than 90 degrees.

2. The photovoltaic panel sunlight tracking device according to claim 1, characterized in that: The first rotation driving module executes the operation of using a first push rod (12) to push the photovoltaic panel rotation bracket to rotate around a first axis within a first time interval, specifically comprising: A first rotation support point is arranged at point O of the photovoltaic panel rotation support (3), and a second rotation support point is arranged at point A of the photovoltaic panel rotation support, and a line connecting the rotation center points of the first and second rotation support points forms a first axis OA; The photovoltaic panel rotating bracket (3) is rotationally connected to the swing end of the first rotating arm via a second rotating support member (32); The force-bearing end of the first push rod is rotationally connected to the first slider pushed by the screw rod, the force-output end of the first push rod is rotationally connected to the force-bearing point of the first rotating arm, the force-bearing point of the first rotating arm is located between its rotating connection end and its swinging end, the rotating connection end of the first rotating arm is rotationally connected to the photovoltaic panel base bracket, and the swinging of the first rotating arm realizes the rotation of the photovoltaic panel rotating bracket around the first axis OA; The second rotation driving module performs the operation of using a second push rod (22) to push the photovoltaic panel rotation bracket to rotate around a second axis within a second time interval, specifically comprising: A first rotation support point is arranged at point O of the photovoltaic panel rotation support (3), and a third rotation support point is arranged at point B of the photovoltaic panel rotation support, and a line connecting the rotation center points of the first and third rotation support points forms a second axis OB; The photovoltaic panel rotating bracket (3) is rotationally connected to the swing end of the second rotating arm via a third rotating support member (33); The force-bearing end of the second push rod (22) is rotationally connected to the second sliding block driven by the screw rod, the force-output end of the second push rod is rotationally connected to the force-bearing point of the second rotating arm, the force-bearing point of the second rotating arm is located between its rotating connection end and its swinging end, the rotating connection end of the second rotating arm is rotationally connected to the photovoltaic panel base bracket, and the swinging of the second rotating arm enables the photovoltaic panel rotating bracket to rotate around the second axis OB.

3. The photovoltaic panel sunlight tracking device according to claim 2, characterized in that: The first rotation driving module performs the operations of setting a first rotation support point at point O of the photovoltaic panel rotation support (3) and setting a second rotation support point at point A of the photovoltaic panel rotation support, specifically comprising: Using the photovoltaic panel frame as the photovoltaic panel rotation bracket (3), determining the positions for installing the first rotation support member (31) and the second rotation support member (32) on the photovoltaic panel frame, using the rotation center point of the first rotation support member (31) as the first rotation support point position, and using the rotation center point of the second rotation support member (32) as the second rotation support point position; or A frame or a flat plate connected to the photovoltaic panel frame is used as a photovoltaic panel rotation bracket (3), and positions for installing a first rotation support member (31) and a second rotation support member (32) are determined on the frame or the flat plate, with the rotation center point of the first rotation support member (31) being used as the first rotation support point position, and the rotation center point of the second rotation support member (32) being used as the second rotation support point position; The second rotation driving module performs the operations of setting a first rotation support point at point O of the photovoltaic panel rotation support and setting a third rotation support point at point B of the photovoltaic panel rotation support, including: Using the photovoltaic panel frame as the photovoltaic panel rotation bracket (3), determining the positions for installing the first rotation support member (31) and the third rotation support member (33) on the photovoltaic panel frame, using the rotation center point of the first rotation support member (31) as the first rotation support point position, and using the rotation center point of the third rotation support member (33) as the third rotation support point position; or A frame or a flat plate connected to the photovoltaic panel frame is used as a photovoltaic panel rotation bracket (3), and positions for installing a first rotation support member (31) and a third rotation support member (33) are determined on the frame or the flat plate, with the rotation center point of the first rotation support member (31) being used as the first rotation support point position, and the rotation center point of the third rotation support member (33) being used as the third rotation support point position.

4. The photovoltaic panel sunlight tracking device according to claim 1, characterized in that: The power switching module performs the operation of softly switching the power output to the first push rod (12) to the second push rod (22) within the switching time interval, specifically including: A threaded area is provided in the middle part of the screw rod (41), and a right end polished rod area (412) and a left end polished rod area (413) without threads are provided at the left and right ends of the threaded area respectively; Before the first time interval, the threaded area of ​​the screw rod is used to drive the second slider (21) corresponding to the second push rod (22) to move to the right end polished rod area (412) at the right end of the threaded area, thereby disconnecting the second slider (21) from the driver power; In a first time interval, the threaded area is used to drive a first slider (11) corresponding to a first push rod (12) to move from right to left along a screw rod (41), and the second slider (21) remains disconnected from the driver power at a right end polished rod area (412) at the right end of the threaded area; In the switching time interval, before the first slider (11) moves from right to left along the lead screw (41) to the left end polished rod area (413) at the left end of the threaded area and is disconnected from the driver power, the second slider (21) located in the right end polished rod area (412) is pushed toward the threaded area on its left side, and after the second slider (21) moves from right to left for a soft switching distance under the drive of the threaded area, the first slider (11) is disconnected from the drive of the threaded area and enters the left end polished rod area (413); In the second time interval, the threaded area is used to drive the second slider (21) corresponding to the second push rod (22) to move from right to left along the screw rod (41), and the first slider (11) remains disconnected from the driver power at the left end of the threaded area in the left end polished rod area (413).

5. The photovoltaic panel sunlight tracking device according to claim 4, characterized in that: The power switching module performs the operation of pushing the second slider (21) located in the right end polished rod area (412) toward the threaded area on the left side thereof before the first slider (11) moves from right to left along the lead screw (41) to the left end polished rod area (413) at the left end of the threaded area and is disconnected from the driver power, specifically comprising: Before the first slider (11) moves from right to left along the lead screw (41) to the left end polished rod area (413) at the left end of the threaded area and is disconnected from the driver power, the first slider (11) is used to push the slider shifter (42) to push the second slider (21) in the polished rod area at the right end of the threaded area toward the threaded area on its left side, so that the second slider (21) enters a thread-driven state.

6. The photovoltaic panel sunlight tracking device according to claim 1, characterized in that: It also includes a sunlight tracking control module (5), which includes a motor drive control circuit. There is an electrical connection between the motor drive control circuit and the motor (45) for performing the following operations: Controlling the photovoltaic panel rotating bracket (3) to rotate around the first or second axis in any one of a continuous manner and a stepwise manner; Controlling the rotation parameters of the photovoltaic panel rotation bracket (3); The rotation parameter includes at least one of a rotation start angle, a rotation start time, a rotation end angle and a rotation end time.

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