PV panel array and PV panel power generation system

Abstract

The invention discloses a PV panel array and a PV panel power generation system, and belongs to the technical field of photovoltaic power generation, the PV panel array comprises a plurality of PV panel modules distributed in a rectangular array, each PV panel module comprises a base, a stand column, a supporting frame, an angle adjusting assembly and a plurality of movable PV panel units, and the stand column is fixed on the base; a plurality of movable PV panel units are slidably mounted on the lower side of the support frame. In the PV panel module designed by the invention, a plurality of movable PV panel units are mounted under the supporting frame, and a first sensor and a second sensor are matched, so that the extension and retraction of the auxiliary PV panel can be controlled according to the shielding condition and distance of the adjacent PV panel modules when the orientation of the supporting frame is adjusted by the angle adjusting assembly to enable the main PV panel to be perpendicular to sunlight; gaps between the PV panel modules are fully utilized, the overall light receiving area is increased, the generating capacity is improved, and the problem that illumination in a limited area cannot be fully utilized due to the fact that the spacing of a traditional array is too large is effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic power generation, and in particular to a PV panel array and a PV panel power generation system. Background Art

[0002] PV panels, commonly referred to as photovoltaic panels or solar panels in Chinese, are the core components of solar photovoltaic power generation systems, converting solar radiation directly into electricity. Because the efficiency of PV panels in converting solar radiation is dependent on the angle of light hitting the panels, achieving maximum efficiency when light strikes them perpendicularly, some existing PV arrays incorporate tracking devices that continuously adjust the angle of the panels to ensure that light strikes them as perpendicularly as possible. However, the need for sufficient space for the panels to rotate requires significant spacing between them, hindering the full utilization of sunlight within the limited space. Summary of the Invention

[0003] In view of the above-mentioned technical deficiencies, the present invention aims to provide a PV panel array and a PV panel power generation system, which can fully utilize the gaps between PV panel modules and improve the overall power generation efficiency by setting up multiple movable PV panel units.

[0004] To solve the above technical problems, the present invention adopts the following technical solution: The present invention provides a PV panel array, comprising a plurality of PV panel modules distributed in a rectangular array, each of the PV panel modules comprising: base, fixed to the ground; A column, fixed on the base; a supporting frame, to which a main PV panel is fixed; Angle adjustment assembly, set on the top of the column, used to adjust the orientation of the support frame and main PV panel; Multiple movable PV panel units are slidably mounted on the underside of the support frame; The movable PV panel unit is provided with a first sensor and a second sensor, the first sensor is used to detect whether the movable PV panel unit blocks the main PV panel or the movable PV panel unit of the rear PV panel module, and the second sensor is used to detect the collision risk; When the first sensor detects no obstruction and the second sensor detects no collision risk, the movable PV panel unit slides out from the support frame; when the second sensor detects a collision risk, the movable PV panel unit retracts to the underside of the support frame until the collision risk disappears; when the first sensor detects an obstruction, the movable PV panel unit retracts to the underside of the support frame until the obstruction disappears.

[0005] Preferably, the angle adjustment assembly comprises: A first slewing bearing includes a first outer ring and a first inner ring rotatably mounted on the first outer ring, wherein the first outer ring is fixed to the top of the column; A second slewing bearing comprises a second outer ring and a second inner ring rotatably mounted on the second outer ring, wherein the second outer ring is fixed to the first inner ring, and the support frame is fixed to the second inner ring; The first outer ring is provided with a first self-locking motor for driving the first inner ring to rotate, and the second outer ring is provided with a second self-locking motor for driving the second inner ring to rotate.

[0006] Preferably, the axis of the first slewing bearing is perpendicular to the axis of the column, and the axis of the second slewing bearing is perpendicular to the axis of the first slewing bearing.

[0007] Preferably, the column is provided with a linkage positioning assembly connected to the support frame, and the linkage positioning assembly includes: A base, the base being arranged on the column; A plurality of telescopic support rods, one end of each telescopic support rod being universally hinged to the support frame and the other end being universally hinged to the base; Multiple locking mechanisms corresponding to multiple telescopic support rods; When the angle adjustment assembly adjusts the orientation of the main PV panel, the telescopic support rod expands and contracts in coordination with the position change of the support frame and the base; when the angle adjustment assembly completes the orientation adjustment of the main PV panel, the locking mechanism fixes the length of the corresponding telescopic support rod.

[0008] Preferably, the telescopic support rod includes an inner rod and a rod sleeve, one end of the inner rod is hinged to the support frame through a first universal joint, the two ends of the first universal joint are fixedly connected to the inner rod and the support frame respectively, and the other end of the inner rod is inserted into the rod sleeve; the end of the rod sleeve away from the inner rod is rotatably installed with a second universal joint, and the end of the second universal joint away from the rod sleeve is rotatably installed on the base.

[0009] Preferably, the locking mechanism comprises: An expansion member is provided at one end of the inner rod inserted into the rod sleeve; An adjusting rod, fixed to one end of the second universal joint close to the rod sleeve and located inside the rod sleeve, for adjusting the expansion degree of the expansion member; When the second universal joint drives the adjusting rod to rotate forward, the expansion degree of the expansion member increases; when the second universal joint drives the adjusting rod to rotate reversely, the expansion degree of the expansion member decreases.

[0010] Preferably, the expansion member comprises: A connector, the connector being fixed to the end of the inner rod, the connector being provided with a key bar, and the inner wall of the rod sleeve being provided with a key slot for slidingly cooperating with the key bar; A stop block, the stop block having the freedom to slide along the radial direction of the connector, and a plurality of driving grooves are formed on the inner side of the stop block; A threaded sleeve is rotatably mounted on an end of the connector away from the inner rod and sleeved on the adjusting rod, wherein the adjusting rod and the threaded sleeve are slidably engaged via a spline; An expansion sleeve, wherein the expansion sleeve is threadedly mounted on the threaded sleeve and is provided with a plurality of drive blocks respectively inserted into a plurality of drive grooves; When the adjusting rod rotates forward, the threaded sleeve drives the expansion sleeve to move along the axial direction of the adjusting rod, and the driving block pushes the abutment block to move along the radial direction of the connector and abut against the inner wall of the rod sleeve.

[0011] Preferably, a gear ring is rotatably mounted in the base, a gear meshing with the gear ring is fixed on one end of the second universal joint located in the base, and a first motor for driving one of the gears to rotate is fixed in the base.

[0012] Preferably, the movable PV panel unit comprises: A movable bracket, on which an auxiliary PV panel is fixed; A slider is fixed to the bottom of the movable bracket, and a slide rail that slides with the slider is fixed to the support frame; The second motor is fixed on the supporting frame, a screw rod is fixed on the output shaft of the second motor, and a rotating sleeve that matches the screw rod thread is fixed on the movable bracket.

[0013] A PV panel power generation system includes the above-mentioned PV panel array.

[0014] The beneficial effects of the present invention are: In the PV panel module designed by the present invention, multiple movable PV panel units are installed under a support frame. Together with a first sensor and a second sensor, the support frame can be oriented using an angle adjustment assembly to align the main PV panel perpendicular to sunlight. The auxiliary PV panels are then extended and retracted based on the shading conditions and distances between adjacent PV panel modules. When the first sensor detects no shading and the second sensor detects no collision risk, the movable PV panel units automatically slide out, fully utilizing the gaps between PV panel modules to increase the overall light-receiving area and improve power generation. Otherwise, the movable PV panel units retract to avoid shading or collisions during angle adjustment. This dynamic adjustment strategy effectively addresses the problem of conventional arrays being unable to fully utilize the light within a limited area due to excessive spacing. The angle adjustment assembly of the present invention includes a first slewing bearing and a second slewing bearing. The axes of the first slewing bearing and the second slewing bearing are perpendicular to each other, enabling the support frame to rotate independently on two axes. The support frame can be manipulated to track changes in the azimuth and altitude angles of the sun, so that the main PV panel and the auxiliary PV panel are always perpendicular to the sunlight, maintaining high power generation efficiency. The linkage positioning assembly designed in the present invention can make up for the problem of insufficient strength of the angle adjustment assembly. Multiple telescopic support rods, columns and support frames form a triangular support structure, which can dynamically match the position changes of the support frame during the angle adjustment of the support frame. After the adjustment is completed, the length of the support rod is fixed by the locking mechanism to maintain the stability of the position. This not only improves the system's wind load resistance, but also disperses stress through multi-point support, thereby reducing the load on the slewing bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 A three-dimensional schematic diagram of a PV panel array from a top view provided by an embodiment of the present invention.

[0017] Figure 2 for Figure 1 A partial enlarged view of point A in the middle.

[0018] Figure 3 A bottom-up perspective view of a PV panel array provided by an embodiment of the present invention with movable PV panel units deployed.

[0019] Figure 4 A side view of a PV panel array provided in accordance with an embodiment of the present invention.

[0020] Figure 5 A three-dimensional diagram of a PV panel array provided by an embodiment of the present invention after adjusting the orientation angle of the main PV panel.

[0021] Figure 6 A schematic diagram of the array distribution of a PV panel array provided in an embodiment of the present invention.

[0022] Figure 7 A schematic diagram of an auxiliary PV panel of a PV panel array provided by an embodiment of the present invention when deployed and filling the gap between adjacent PV panel modules.

[0023] Figure 8 A schematic diagram of the structure within a base station in a PV panel array provided by an embodiment of the present invention.

[0024] Figure 9 A cross-sectional view of a telescopic support rod in a PV panel array provided in an embodiment of the present invention.

[0025] Figure 10 for Figure 9 A partial enlarged view of point B in the middle.

[0026] Description of reference numerals: 1. Base, 2. Column, 3. Support frame, 4. Main PV panel, 5. Movable PV panel unit, 51. Movable bracket, 52. Auxiliary PV panel, 53. Slider, 54. Slide rail, 55. Second motor, 56. Screw, 57. Rotating sleeve, 6. First slewing bearing, 61. First outer ring, 62. First inner ring, 63. First self-locking motor, 7. Second slewing bearing, 71. Second outer ring, 72. Second inner ring, 73. Second self-locking motor, 8. Base, 9. Telescopic support rod, 91. Inner rod, 92. Rod sleeve, 93. First universal joint, 94. Second universal joint, 95. Expansion piece, 951. Connector, 952. Block, 953. Drive groove, 954. Threaded sleeve, 955. Expansion sleeve, 956. Drive block, 96. Adjusting rod, 10. Gear ring, 11. Gear, 12. First motor. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0028] Example 1: like Figures 1 to 7 As shown, a first embodiment of the present invention provides a PV panel array, comprising a plurality of PV panel modules fixed to the ground in a rectangular grid layout. In this embodiment, a five-by-five grid layout is taken as an example. A single PV panel module mainly comprises a base 1, a column 2, a support frame 3, an angle adjustment assembly and a plurality of movable PV panel units 5. In this embodiment, three movable PV panel units 5 are used. Among them, the base 1 is anchored to the ground by anchor bolts, burial or other stable means. The column 2 is fixed in a vertical state at the top center of the base 1. The support frame 3 is a rectangular frame structure as a whole, and a rectangular main PV panel 4 is fixed on its top. The angle adjustment assembly is fixed to the top of the column 2, and its top is connected to and supports the support frame 3, and is used to adjust the pitch angle and azimuth angle of the support frame 3 and the main PV panel 4 thereon.

[0029] Three movable PV panel units 5 are arranged at three edges of the bottom of the support frame 3 via sliding mechanisms. Each movable PV panel unit 5 comprises a rectangular movable bracket 51 that supports an auxiliary PV panel 52, sliders 53 fixed to the bottom sides of the movable bracket 51, and a drive mechanism for driving the movable bracket 51 to move. A linear slide rail 54 is fixedly mounted on the support frame 3, forming a sliding pair with the slider 53. The drive mechanism includes a second motor 55 fixed to the support frame 3, a screw rod 56 connected to the output shaft of the second motor 55, and a rotating sleeve 57 fixed to the movable bracket 51 and threadedly engaged with the screw rod 56. When the second motor 55 drives the screw rod 56 to rotate, the screw rod 56 drives the rotating sleeve 57 to move, causing the movable bracket 51 to slide along the slide rail 54, thereby controlling the auxiliary PV panel 52 to slide out or retract from the bottom of the support frame 3.

[0030] Each movable bracket 51 of a movable PV panel unit 5 is integrated with a first sensor and a second sensor. The first sensor, a photoelectric light-blocking sensor or an infrared sensor, is used to detect in real time whether the slid-out movable PV panel unit 5 blocks light from the main PV panels 4 on the adjacent module behind it or the slid-out movable PV panel unit 5. The second sensor, an ultrasonic ranging sensor or a lidar, is mounted on the side end surface of the movable bracket 51 and is used to detect any nearby obstacles in the sliding path of the movable bracket 51 that could cause structural collision.

[0031] When the first sensor detects no obstruction and there are no obstacles within the second sensor's detection range (i.e., no collision risk), the movable PV panel unit 5 is driven by the second motor 55, causing its movable bracket 51 to gradually slide out of the area below the support frame 3, carrying the auxiliary PV panel 52, thereby expanding the effective light-receiving area. When the second sensor detects an obstacle intruding beyond the preset safety distance threshold, the movable PV panel unit 5 immediately retracts beneath the support frame 3 until the obstacle is out of the sensor's detection range. When the first sensor detects obstruction of the main PV panel 4 or auxiliary PV panel 52 on the adjacent PV panel module behind, the movable PV panel unit 5 also retracts beneath the support frame 3 until the obstruction signal disappears. Through this dynamic strategy, the movable PV panel unit 5 of each PV panel module can independently respond to local environmental changes, adaptively utilizing or avoiding the gaps between modules, fully utilizing the light within the limited space, and maximizing the power generation efficiency of the entire PV panel array.

[0032] Example 2: Based on the first embodiment, the angle adjustment assembly specifically designed in the second embodiment of the present invention includes two slewing bearings with mutually perpendicular axes. These two slewing bearings are a first slewing bearing 6 and a second slewing bearing 7. The first outer ring 61 of the first slewing bearing 6 is welded to the top of the column 2. The first inner ring 62 is nested within the first outer ring 61 and rotates freely about the axis of the first inner ring 62 via a bearing. A first self-locking motor 63 is fixed to the outer side of the first outer ring 61 and drives the first inner ring 62 through a reduction gear set that engages the outer gear ring of the first inner ring 62. The second outer ring 71 of the second slewing bearing 7 is rigidly connected to the end face of the first inner ring 62 via a connecting plate. The second inner ring 72 is nested within the second outer ring 71 and fixedly connected to the bottom center of the support frame 3 via a connecting plate. The axis of the second slewing bearing 7 is strictly orthogonal to the axis of the first slewing bearing 6. A second self-locking motor 73 is fixed to the outer side of the second outer ring 71 and drives the second inner ring 72 through a reduction gear set that engages the outer gear ring of the second inner ring 72.

[0033] Through the first self-locking motor 63 and the second self-locking motor 73, the support frame 3 can be controlled to rotate on two vertical axes in succession, thereby adjusting the orientation of the main PV panel 4 so that it can accurately track the movement trajectory of the sun, ensuring that the main PV panel 4 is always vertically aligned with the incident sunlight, greatly improving the efficiency of receiving direct radiation.

[0034] As the support frame 3 rotates along two axes with the angle adjustment assembly, the state of the active PV panel unit 5 is dynamically linked to the direction of illumination and the position of adjacent modules. After the angle adjustment assembly completes tracking posture adjustments based on the sun's position, each module in the array independently determines the extension or retraction state of its own active PV panel unit 5, using the dynamic strategy described in Example 1.

[0035] Example 3: like Figures 1 to 10 As shown, embodiment 3 of the present invention further strengthens the structural stability of the support frame 3 in extreme postures. A horizontally outwardly extending annular base 8 is welded to the middle of the column 2. Four telescopic support rods 9 are distributed circumferentially around the column 2 between the base 8 and the support frame 3. The telescopic support rod 9 includes an inner rod 91 and a rod sleeve 92. The top end of the inner rod 91 is hinged to the lower surface of the support frame 3 through a first universal joint 93, and the two ends of the first universal joint 93 are respectively fixed to the top end of the inner rod 91 and the support frame 3. The bottom end of the inner rod 91 is inserted into the inner cavity of the rod sleeve 92 and can slide and retract along the axial direction of the rod sleeve 92. The bottom of the rod sleeve 92 is rotatably connected to one end of the second universal joint 94, and the other end of the second universal joint 94 is rotatably mounted on the base 8. The first universal joint 93 and the second universal joint 94 are both cross-axis universal joints, with a cross axis in the middle, and the fork ends of the fork joints at both ends are connected to the shaft necks of the cross axis through bearings, and the ends of the fork joints are cylindrical.

[0036] The above arrangement allows the inner rod 91 and the rod sleeve 92 to slide relative to each other adaptively as the angle between the support frame 3 and the upright post 2 changes, thereby changing the overall length of the telescopic support rod 9. When the length of the telescopic support rod 9 is fixed, the four telescopic support rods 9 and the upright post 2 together form a stable polyhedron structure that spatially supports the frame 3.

[0037] In order to fix the length of the telescopic support rod 9, the present invention provides a locking mechanism including an expansion member 95 inside the telescopic support rod 9. Figure 9 and Figure 10 As shown, the inner rod 91 extends deep into the rod sleeve 92, and a connector 951 is fixedly mounted at its bottom end. An axially extending key bar is fixed to the sidewall of connector 951, and a keyway is provided in the inner wall of rod sleeve 92 to slide with the key bar, ensuring that the two move only axially and without relative rotation. The end of connector 951, away from the inner rod 91, is provided with multiple radially extending slots, in which a stopper 952 is slidably mounted. An adjustment rod 96 is fixed to the end of the second universal joint 94, near the rod sleeve 92, and inserted into the rod sleeve 92. Because the rod sleeve 92 can rotate at the cylindrical end of the second universal joint 94, the adjustment rod 96 can rotate relative to the rod sleeve 92. Connector 951 has a central hole through which the adjustment rod 96 passes. A threaded sleeve 954 is rotatably mounted on connector 951 and engages with the adjustment rod 96 via a spline. The stopper 952 has multiple oblique drive slots 953 on the side facing the threaded sleeve 954. The threaded sleeve 954 is externally threaded with an expansion sleeve 955 with multiple drive blocks 956. The multiple drive blocks 956 are respectively inserted into the multiple drive grooves 953 of the stop block 952.

[0038] With the above arrangement, when the cylinder at the lower end of the second universal joint 94 rotates actively, the adjusting rod 96 rotates along with the second universal joint 94. Since the cylinder at the end of the first universal joint 93 is fixedly connected to the support frame 3, the inner rod 91 will not rotate around its own axis, and thus the connector 951, the stop block 952 and the expansion sleeve 955 will not rotate. This allows the adjusting rod 96 to drive the threaded sleeve 954 to rotate, thereby driving the expansion sleeve 955 to move along the axial direction of the adjusting rod 96. Figure 10 When the adjustment rod 96 is rotated forward, causing the expansion sleeve 955 to move upward, the driving block 956 pushes the abutment 952 to move radially, pressing against the inner wall of the rod sleeve 92, thereby fixing the inner rod 91 and the rod sleeve 92 relative to each other, limiting the extension and retraction of the telescopic support rod 9, and thus providing stable support for the support frame 3. When the adjustment rod 96 is rotated backward, the expansion sleeve 955 moves downward, and the driving block 956 no longer presses against the abutment 952, thereby contacting the fixed relationship between the inner rod 91 and the rod sleeve 92, allowing the telescopic support rod 9 to retract and retract again, without affecting the operation of the angle adjustment assembly.

[0039] To facilitate simultaneous adjustment of the positions of the four telescopic support rods 9, a gear ring 10 is rotatably mounted within the base 8 in this embodiment. A gear 11 meshing with the gear ring 10 is fixed to the cylindrical base of each second universal joint 94. A first motor 12 mounted within the base 8 drives any one of these gears 11 to rotate, which, through the gear ring 10, causes all adjustment rods 96 to rotate synchronously, thereby simultaneously operating the four locking mechanisms to lock or unlock the length of the telescopic support rods 9.

[0040] Example 4: A fourth embodiment of the present invention provides a PV panel power generation system, which adopts the PV panel arrays of the first to third embodiments.

[0041] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A PV panel array, characterized in that: The invention comprises a plurality of PV panel modules distributed in a rectangular array, each of the PV panel modules comprising: base, fixed to the ground; A column, fixed to the base; a supporting frame, to which a main PV panel is fixed; Angle adjustment assembly, set on the top of the column, used to adjust the orientation of the support frame and main PV panel; Multiple movable PV panel units are slidably mounted on the underside of the support frame; The movable PV panel unit is provided with a first sensor and a second sensor, the first sensor is used to detect whether the movable PV panel unit blocks the main PV panel or the movable PV panel unit of the rear PV panel module, and the second sensor is used to detect the collision risk; When the first sensor detects no obstruction and the second sensor detects no collision risk, the movable PV panel unit slides out from the support frame; when the second sensor detects a collision risk, the movable PV panel unit retracts to the underside of the support frame until the collision risk disappears; when the first sensor detects an obstruction, the movable PV panel unit retracts to the underside of the support frame until the obstruction disappears.

2. A PV panel array according to claim 1, characterized in that: The angle adjustment component includes: A first slewing bearing includes a first outer ring and a first inner ring rotatably mounted on the first outer ring, wherein the first outer ring is fixed to the top of the column; A second slewing bearing comprises a second outer ring and a second inner ring rotatably mounted on the second outer ring, wherein the second outer ring is fixed to the first inner ring, and the support frame is fixed to the second inner ring; The first outer ring is provided with a first self-locking motor for driving the first inner ring to rotate, and the second outer ring is provided with a second self-locking motor for driving the second inner ring to rotate.

3. A PV panel array according to claim 2, characterized in that: The axis of the first slewing bearing is perpendicular to the axis of the column, and the axis of the second slewing bearing is perpendicular to the axis of the first slewing bearing.

4. A PV panel array according to claim 1, characterized in that: The column is provided with a linkage positioning assembly connected to the support frame, and the linkage positioning assembly includes: A base, the base being arranged on the column; A plurality of telescopic support rods, one end of each telescopic support rod being universally hinged to the support frame and the other end being universally hinged to the base; Multiple locking mechanisms corresponding to multiple telescopic support rods; When the angle adjustment assembly adjusts the orientation of the main PV panel, the telescopic support rod expands and contracts in coordination with the position change of the support frame and the base; when the angle adjustment assembly completes the orientation adjustment of the main PV panel, the locking mechanism fixes the length of the corresponding telescopic support rod.

5. A PV panel array according to claim 4, characterized in that: The telescopic support rod includes an inner rod and a rod sleeve, one end of the inner rod is hinged to the support frame through a first universal joint, the two ends of the first universal joint are fixedly connected to the inner rod and the support frame respectively, and the other end of the inner rod is inserted into the rod sleeve; the end of the rod sleeve away from the inner rod is rotatably mounted with a second universal joint, and the end of the second universal joint away from the rod sleeve is rotatably mounted on the base.

6. A PV panel array according to claim 5, characterized in that: The locking mechanism comprises: An expansion member is provided at one end of the inner rod inserted into the rod sleeve; An adjusting rod, fixed to one end of the second universal joint close to the rod sleeve and located inside the rod sleeve, for adjusting the expansion degree of the expansion member; When the second universal joint drives the adjusting rod to rotate forward, the expansion degree of the expansion member increases; when the second universal joint drives the adjusting rod to rotate reversely, the expansion degree of the expansion member decreases.

7. A PV panel array according to claim 6, characterized in that: The expansion member comprises: A connector, the connector being fixed to the end of the inner rod, the connector being provided with a key bar, and the inner wall of the rod sleeve being provided with a key slot for slidingly cooperating with the key bar; A stop block, the stop block having the freedom to slide along the radial direction of the connector, and a plurality of driving grooves are formed on the inner side of the stop block; A threaded sleeve is rotatably mounted on an end of the connector away from the inner rod and sleeved on the adjusting rod, wherein the adjusting rod and the threaded sleeve are slidably engaged via a spline; An expansion sleeve, wherein the expansion sleeve is threadedly mounted on the threaded sleeve and is provided with a plurality of drive blocks respectively inserted into a plurality of drive grooves; When the adjusting rod rotates forward, the threaded sleeve drives the expansion sleeve to move along the axial direction of the adjusting rod, and the driving block pushes the abutment block to move along the radial direction of the connector and abut against the inner wall of the rod sleeve.

8. A PV panel array according to claim 5, characterized in that: A gear ring is rotatably mounted in the base, a gear meshing with the gear ring is fixed on one end of the second universal joint located in the base, and a first motor for driving one of the gears to rotate is fixed in the base.

9. The PV panel array according to claim 1, wherein: The movable PV panel unit comprises: A movable bracket, on which an auxiliary PV panel is fixed; A slider is fixed to the bottom of the movable bracket, and a slide rail that slides with the slider is fixed to the support frame; The second motor is fixed on the supporting frame, a screw rod is fixed on the output shaft of the second motor, and a rotating sleeve that matches the screw rod thread is fixed on the movable bracket.

10. A PV panel power generation system, characterized in that: A PV panel array comprising any one of claims 1 to 9.

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