Single-row flexible photovoltaic tracking bracket transmission mechanism and photovoltaic system

Abstract

This utility model relates to the field of photovoltaic power generation technology, and in particular to a transmission mechanism for a single-row flexible photovoltaic tracking bracket and a photovoltaic system. The transmission mechanism for the single-row flexible photovoltaic tracking bracket includes a main transmission unit and multiple driven units. The main transmission unit includes a driving component, a driving wheel, a driven wheel, two main transmission cables, and a support wheel assembly. The main transmission cable is an annular cable. The two driven wheels support the annular cable, so that the annular cable includes two middle sections extending along a first direction. Both middle sections are wound around the driving wheel. The driving component drives the driving wheel to rotate, causing the two middle sections to move along their respective extension directions. The support wheel assembly provides limiting support for the middle sections. Multiple driven units are correspondingly arranged at multiple support units. The annular cable can drive the driven units to adjust the tilt angle of the photovoltaic modules. The photovoltaic system includes at least one row of flexible photovoltaic tracking brackets, and the flexible photovoltaic tracking bracket includes the aforementioned single-row flexible photovoltaic tracking bracket transmission mechanism.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic power generation technology, and in particular to a transmission mechanism and photovoltaic system for a single-row flexible photovoltaic tracking bracket. Background Technology

[0002] Existing photovoltaic (PV) systems often use fixed brackets to support the PV modules. However, power generation is unstable due to seasonal variations, resulting in low overall light utilization. Therefore, adjustable PV tracking mechanisms have seen rapid development. Current PV tracking brackets mostly use rigid linkages in their transmission mechanisms, requiring high assembly precision and exhibiting poor terrain adaptability. They need flat terrain or leveled sites, and terrain subsidence during operation can lead to drive failure, damage to drive components, and high maintenance costs. Furthermore, due to the limitations of rigid materials, the drive output torque cannot be too high, resulting in a large number of drives and high costs. Utility Model Content

[0003] One objective of this invention is to provide a single-row flexible photovoltaic tracking bracket transmission mechanism that can improve adaptability to terrain deformation, reduce the number of drives, and lower costs.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A single-row flexible photovoltaic tracking bracket transmission mechanism is provided, applied to a flexible photovoltaic tracking bracket. The flexible photovoltaic tracking bracket further includes a plurality of support units arranged at intervals along a first direction. The single-row flexible photovoltaic tracking bracket transmission mechanism includes:

[0006] The main transmission unit includes a driving component, a driving wheel, a driven wheel, two main transmission cables, and a support wheel assembly. The main transmission cable is an annular cable. The two driven wheels support the annular cable so that the annular cable includes two middle sections extending along the first direction. Both middle sections are wound around the driving wheel. The driving component drives the driving wheel to rotate so that the two middle sections move along their own extension direction. The support wheel assembly provides limiting support for the middle sections.

[0007] Multiple driven units are arranged one-to-one with the multiple support units, and the annular cable can drive the driven units to adjust the tilt angle of the photovoltaic module.

[0008] Optionally, the support wheel assembly includes two support wheels, with the outer ring grooves of the two support wheels arranged opposite each other to form a limiting space, the limiting space extending along the first direction, and the middle section penetrating through the limiting space.

[0009] Optionally, the two support wheels are arranged sequentially in a vertical direction, and the rotation axes of the two support wheels extend along a second direction, which is a horizontal direction perpendicular to the first direction.

[0010] Optionally, each of the support units located in the middle is provided with two support wheel sets, and the two support wheel sets respectively provide limiting support for the two middle sections.

[0011] Optionally, the two driven wheels are located at the two support units at both ends, and the drive wheel is located at one of the support units in the middle.

[0012] Optionally, each of the driven units includes a rotating member rotatably connected to the support unit, the rotating member having a rotation axis extending along the first direction, and the rotating member having a first position and a second position, the line connecting the first position and the second position being perpendicular to the first direction.

[0013] Each of the driven units further includes two driven cables, one end of which is connected to the first position and the other end of which is connected to one of the two middle sections, and the other end of which is connected to the second position and the other end of which is connected to the other of the two middle sections.

[0014] Optionally, the rotating component includes a support beam and an arc-shaped frame. The extension direction of the support beam is perpendicular to the first direction. Both ends of the arc-shaped frame are connected to the support beam. The first position and the second position are both located on the arc-shaped frame.

[0015] Optionally, the arc-shaped frame has a wire-passing groove, which extends along the extension direction of the arc-shaped frame, and the two driven cables are respectively located in different areas of the wire-passing groove.

[0016] Optionally, each of the driven units further includes a pair of reversing wheels, with the two reversing wheels supporting the two driven cables respectively.

[0017] Another objective of this invention is to provide a photovoltaic system that can improve adaptability to terrain deformation, reduce the number of drives, and lower costs.

[0018] To achieve this objective, the present invention adopts the following technical solution:

[0019] A photovoltaic system is provided, including at least one row of flexible photovoltaic tracking brackets. The flexible photovoltaic tracking brackets include the aforementioned single-row flexible photovoltaic tracking bracket transmission mechanism. The flexible photovoltaic tracking brackets also include a plurality of support units arranged at intervals along a first direction. The plurality of driven units of the single-row flexible photovoltaic tracking bracket transmission mechanism are correspondingly arranged at the plurality of support units. The single-row flexible photovoltaic tracking bracket transmission mechanism is capable of adjusting the tilt angle of the photovoltaic modules.

[0020] The beneficial effects of this utility model are:

[0021] This invention provides a transmission mechanism for a single-row flexible photovoltaic tracking bracket, applied to a flexible photovoltaic tracking bracket. The flexible photovoltaic tracking bracket also includes multiple support units arranged at intervals along a first direction. The transmission mechanism for the single-row flexible photovoltaic tracking bracket includes a main transmission unit and multiple driven units. The main transmission unit includes a driving component, a driving wheel, a driven wheel, two main transmission cables, and a support wheel assembly. The main transmission cable is a ring cable. The two driven wheels support the ring cable, so that the ring cable includes two middle sections extending along the first direction. Both middle sections are wound around the driving wheel. The driving component drives the driving wheel to rotate, causing the two middle sections to move along their respective extension directions. The support wheel assembly provides limiting support for the middle sections. Multiple driven units are correspondingly arranged at multiple support units. The ring cable can drive the driven units to adjust the tilt angle of the photovoltaic modules. This transmission mechanism for a single-row flexible photovoltaic tracking bracket, by setting a flexible main transmission cable and related drive transmission components, can prevent linkage failure when there is a height inconsistency between a support unit and other support units, or when the heights of multiple support units are different. It ensures that the tilt angle of the photovoltaic modules can still be adjusted when the terrain changes, and will not damage the driving component. Furthermore, the flexible structure is lightweight, and one driving element can drive more driven units, thereby reducing the number of drives and lowering costs.

[0022] This invention also provides a photovoltaic system, including at least one row of flexible photovoltaic tracking brackets. The flexible photovoltaic tracking brackets include the aforementioned single-row flexible photovoltaic tracking bracket transmission mechanism. The flexible photovoltaic tracking brackets also include multiple support units arranged at intervals along a first direction. Multiple driven units of the single-row flexible photovoltaic tracking bracket transmission mechanism are correspondingly arranged at the multiple support units. The single-row flexible photovoltaic tracking bracket transmission mechanism can adjust the tilt angle of the photovoltaic modules. This photovoltaic system can improve adaptability to terrain deformation, reduce the number of drives, and lower costs. Attached Figure Description

[0023] Figure 1 This is a partial structural schematic diagram of the photovoltaic system provided in an embodiment of the present invention;

[0024] Figure 2This is a partial enlarged view of the flexible photovoltaic tracking bracket (including support beam) provided in an embodiment of the present invention;

[0025] Figure 3 This is a partial enlarged view of the flexible photovoltaic tracking bracket (including support wheels and reversing wheels) provided in this embodiment of the utility model.

[0026] In the picture:

[0027] 1. Main drive unit; 11. Drive wheel; 12. Driven wheel; 13. Main drive cable; 131. Middle section; 14. Support wheel;

[0028] 2. Driven unit; 21. Rotating component; 211. Support beam; 212. Arc frame; 213. Reinforcing rod; 22. Driven cable; 23. Reversing wheel;

[0029] 100. Flexible photovoltaic tracking bracket; 110. Transmission mechanism for single-row flexible photovoltaic tracking bracket; 120. Support unit; 130. Support cable;

[0030] 200. Photovoltaic modules. Detailed Implementation

[0031] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the drawings, not all of them.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] Existing photovoltaic (PV) systems often use fixed brackets to support the PV modules. However, power generation is unstable due to seasonal variations, resulting in low overall light utilization. Therefore, adjustable PV tracking mechanisms have seen rapid development. Current PV tracking brackets mostly use rigid linkages in their transmission mechanisms, requiring high assembly precision and exhibiting poor terrain adaptability. They need flat terrain or leveled sites, and terrain subsidence during operation can lead to drive failure, damage to drive components, and high maintenance costs. Furthermore, due to the limitations of rigid materials, the drive output torque cannot be too high, resulting in a large number of drives and high costs.

[0035] This embodiment provides a single-row flexible photovoltaic tracking bracket transmission mechanism 110 to solve the above problems. The single-row flexible photovoltaic tracking bracket transmission mechanism 110 can improve the adaptability to terrain deformation, reduce the number of drives, and reduce costs.

[0036] like Figures 1-3 As shown, the single-row flexible photovoltaic tracking bracket transmission mechanism 110 of this embodiment is applied to the flexible photovoltaic tracking bracket 100, which also includes a plurality of support units 120 arranged at intervals along a first direction. Optionally, the support unit 120 includes a support column.

[0037] The single-row flexible photovoltaic tracking bracket transmission mechanism 110 includes a main transmission unit 1 and multiple driven units 2. The main transmission unit 1 drives the multiple driven units 2 so that the multiple driven units 2 can jointly adjust the tilt angle of the photovoltaic module 200.

[0038] The main transmission unit 1 includes a driving component, a driving wheel 11, a driven wheel 12, two main transmission cables 13, and a support wheel assembly. The main transmission cables 13 are loop cables. The two driven wheels 12 support the loop cables, such that the loop cables include two intermediate sections 131 extending along a first direction. Both intermediate sections 131 are wound around the driving wheel 11. The driving component drives the driving wheel 11 to rotate, causing the two intermediate sections 131 to move along their respective extension directions. The support wheel assembly provides limiting support for the intermediate sections 131. Optionally, the driving component is a motor.

[0039] Optionally, the main drive unit 1 further includes a rotary reducer connected to the output end of the drive component, and the drive wheel 11 is mounted on the disc surface of the rotary reducer. The drive wheel 11 has upper and lower grooves, and the two middle sections 131 of the main drive cable 13 are respectively wound around the upper and lower grooves of the drive wheel 11, each wound more than one turn. Optionally, the drive wheel 11 is a drum.

[0040] Optionally, the two driven wheels 12 are located at two support units 120 at both ends, and the drive wheel 11 is located at a support unit 120 in the middle. Optionally, the shafts of the two driven wheels 12 are connected to two support columns at both ends, and the shaft of the drive wheel 11 is connected to any one of the support columns in the middle.

[0041] Optionally, the drive wheel 11 is mounted on the middle support column. It is known that by positioning the drive wheel 11 in the middle, the drive wheel 11 is subjected to two forces acting in opposite directions. The two forces essentially cancel each other out, which can significantly reduce the unidirectional force on the drive wheel 11 and the middle support column, thereby reducing the requirements for driving performance and foundation strength, and lowering the overall cost.

[0042] like Figure 3 As shown, optionally, the support wheel assembly includes two support wheels 14. The outer grooves of the two support wheels 14 are arranged opposite each other to form a limiting space. The limiting space extends through the first direction, and the middle section 131 extends through the limiting space. Optionally, the two support wheels 14 are arranged sequentially in the vertical direction, and the rotation axes of the two support wheels 14 extend along a second direction, which is a horizontal direction perpendicular to the first direction. Optionally, each support unit 120 located in the middle is provided with two support wheel assemblies, and the two support wheel assemblies respectively provide limiting support for the two middle sections 131. The middle section 131 is located within the limiting space, so that when the support column undergoes displacement in the height direction, it can drive the main drive cable 13 to bend, ensuring the relative position between the main drive cable 13 and the driven unit 2 at the support unit 120 is stable. The main drive cable 13 can still drive the driven unit 2 to adjust the tilt angle of the photovoltaic module 200, and the transmission process can still proceed smoothly.

[0043] Multiple driven units 2 are arranged one-to-one with multiple support units 120, and the ring cable can drive multiple driven units 2 to jointly adjust the tilt angle of the photovoltaic module 200.

[0044] Optionally, each driven unit 2 includes a rotating member 21, which is rotatably connected to the support unit 120. The axis of rotation of the rotating member 21 extends along a first direction. The rotating member 21 has a first position and a second position, and the line connecting the first position and the second position is perpendicular to the first direction. Each driven unit 2 also includes two driven cables 22. One end of one driven cable 22 is connected to the first position, and the other end is connected to one of the two middle sections 131. One end of the other driven cable 22 is connected to the second position, and the other end is connected to the other of the two middle sections 131. When the two middle sections 131 of the annular cable move along their respective extension directions, one driven cable 22 will be stretched. Since the annular cable is located below the first and second positions, the first position of the rotating member 21 will move downward. When the other driven cable 22 is relaxed, the second position of the rotating member 21 will move upward accordingly, thereby realizing the rotation of the rotating member 21.

[0045] Optionally, the rotating component 21 includes a support beam 211 and an arc-shaped frame 212. The extension direction of the support beam 211 is perpendicular to the first direction, and the support beam 211 is rotatably connected to the support column. Optionally, the middle part of the support beam 211 is hinged to the top of the support column. Optionally, both ends of the arc-shaped frame 212 are connected to the support beam 211, and both the first and second positions are located on the arc-shaped frame 212. Optionally, the arc-shaped frame 212 is located below the support beam 211 to avoid obstructing the photovoltaic module 200 above the support beam 211.

[0046] Optionally, the rotating component 21 also includes a plurality of reinforcing rods 213, each reinforcing rod 213 being connected at one end to the support beam 211 and at the other end to the arc frame 212. The arrangement of the reinforcing rods 213 can improve the structural strength of the rotating component 21.

[0047] Optionally, a wire-passing groove is provided on the arc-shaped frame 212, extending along the extension direction of the arc-shaped frame 212, with the two driven cables 22 respectively located in different areas of the wire-passing groove. Optionally, the wire-passing groove is formed on the outer wall surface of the arc-shaped frame 212. Optionally, the first position is one end of the wire-passing groove, and the second position is the other end of the wire-passing groove. Optionally, the portion of the driven cable 22 located within the wire-passing groove has multiple fixed positions with the arc-shaped frame 212, each fixed position being secured by a fastener, such as a bolt.

[0048] That is, when the two middle sections 131 of the annular cable move left and right respectively along their own extension direction, one of the two driven cables 22 of the same driven unit 2 is stretched, causing one end of the arc frame 212 to move down, and the other is relaxed, causing the other end of the arc frame 212 to move up. Of course, the upward and downward movement of the two ends of the arc frame 212 must simultaneously satisfy the condition that one of the two driven cables 22 is stretched and the other is relaxed. By setting the arc frame 212, the stable rotation of the support beam 211 can be guaranteed.

[0049] Optionally, such as Figure 3 As shown, each driven unit 2 also includes a pair of reversing wheels 23, which support two driven cables 22 respectively, so that the driven cables 22 have a bending and reversing position, so that one end of the driven cable 22 can be connected to the arc frame 212 and the other end can be connected to the middle section 131 of the main drive cable 13.

[0050] Optionally, two reversing wheels 23 are located on both sides of the support column, and the shafts of both reversing wheels 23 are connected to the support column. The reversing wheels 23 are symmetrically arranged on both sides of the support column. The reversing wheels 23, the top of the arc frame 212, and the main drive cable 13 are not at the same height, and the reversing wheels 23 are at a certain angle to the horizontal direction. Specifically, the connection positions of the two driven cables 22 and the main drive cable 13 are all located on the same side of the support column along the first direction. The upper end face of the horizontally placed reversing wheel 23 is inclined towards this side. One driven cable 22 passes around one reversing wheel 23 to change its extension direction and smoothly transition to the main drive cable 13. The two driven cables 22 correspond exactly to the two reversing wheels 23. That is, one end of each of the two driven cables 22 is fixed at the top position of the arc frame 212, passes through the cable groove, and then passes around one reversing wheel 23 from different directions to connect to the two middle sections 131 of the main drive cable 13. Each driven unit 2 is set according to this scheme.

[0051] Optionally, the flexible photovoltaic tracking bracket 100 includes at least two support cables 130, each extending along a first direction and connected to all support beams 211. The at least two support cables 130 are sequentially spaced along the extension direction of the support beams 211. The photovoltaic module 200 is connected to the at least two support cables 130. Optionally, in this embodiment, four support cables 130 are provided; however, in other embodiments, two, three, five, or more cables can be used. As all support beams 211 rotate, the height of the support cables 130 adjusts accordingly, and the tilt angle of the photovoltaic module 200 changes accordingly.

[0052] The single-row flexible photovoltaic tracking bracket transmission mechanism 110, through the setting of a flexible main transmission cable 13 and related drive transmission components, can prevent linkage failure when there is a height inconsistency between a certain support unit 120 and other support units 120, or when the heights of multiple support units 120 are different. This ensures that the tilt angle of the photovoltaic module 200 can still be adjusted when the terrain changes, and will not cause damage to the drive components. Moreover, the flexible structure is lightweight, and one drive component can drive more driven units 2, thereby reducing the number of drives and lowering costs.

[0053] This embodiment also provides a photovoltaic system, including a photovoltaic module 200 and at least one row of flexible photovoltaic tracking brackets 100, the flexible photovoltaic tracking brackets 100 being used to support the photovoltaic module 200. The flexible photovoltaic tracking bracket 100 includes the aforementioned single-row flexible photovoltaic tracking bracket transmission mechanism 110 and a plurality of support units 120 arranged sequentially at intervals along a first direction. The plurality of driven units 2 of the single-row flexible photovoltaic tracking bracket transmission mechanism 110 are correspondingly arranged at the plurality of support units 120, and the single-row flexible photovoltaic tracking bracket transmission mechanism 110 is capable of adjusting the tilt angle of the photovoltaic module 200.

[0054] This photovoltaic system can improve adaptability to terrain deformation, reduce the number of drives, and lower costs.

[0055] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A transmission mechanism for a single-row flexible photovoltaic tracking bracket, characterized in that, The flexible photovoltaic tracking bracket (100) is applied to a flexible photovoltaic tracking bracket (100), which further includes a plurality of support units (120) arranged at intervals along a first direction. The transmission mechanism (110) of the single-row flexible photovoltaic tracking bracket includes: The main transmission unit (1) includes a driving member, a driving wheel (11), a driven wheel (12), two main transmission cables (13) and a support wheel set. The main transmission cable (13) is an annular cable. The two driven wheels (12) are used to support the annular cable so that the annular cable includes two middle sections (131) extending along the first direction. The two middle sections (131) are both wound around the driving wheel (11). The driving member is used to drive the driving wheel (11) to rotate so that the two middle sections (131) move along their own extension direction respectively. The support wheel set is used to limit and support the middle sections (131). Multiple driven units (2) are arranged one-to-one with the multiple support units (120). The annular cable can drive the driven units (2) to adjust the tilt angle of the photovoltaic module (200).

2. The transmission mechanism for a single-row flexible photovoltaic tracking bracket according to claim 1, characterized in that, The support wheel assembly includes two support wheels (14), and the outer ring grooves of the two support wheels (14) are arranged opposite each other to form a limiting space. The limiting space is through the first direction, and the middle section (131) passes through the limiting space.

3. The transmission mechanism for a single-row flexible photovoltaic tracking bracket according to claim 2, characterized in that, The two support wheels (14) are arranged in sequence along the vertical direction, and the shafts of the two support wheels (14) extend along the second direction, which is a horizontal direction perpendicular to the first direction.

4. The transmission mechanism for a single-row flexible photovoltaic tracking bracket according to claim 1, characterized in that, Two support wheel sets are provided at each of the support units (120) located in the middle, and the two support wheel sets respectively provide limiting support for the two middle sections (131).

5. The transmission mechanism for a single-row flexible photovoltaic tracking bracket according to claim 1, characterized in that, The two driven wheels (12) are located at the two support units (120) at both ends, and the drive wheel (11) is located at one of the support units (120) in the middle.

6. The transmission mechanism for a single-row flexible photovoltaic tracking bracket according to any one of claims 1-5, characterized in that, Each of the driven units (2) includes a rotating member (21) rotatably connected to the support unit (120). The rotating member (21) has a shaft extending along the first direction. The rotating member (21) has a first position and a second position. The line connecting the first position and the second position is perpendicular to the first direction. Each of the driven units (2) further includes two driven cables (22), one end of which is connected to the first position and the other end of which is connected to one of the two middle sections (131), and one end of which is connected to the second position and the other end of which is connected to the other of the two middle sections (131).

7. The transmission mechanism for a single-row flexible photovoltaic tracking bracket according to claim 6, characterized in that, The rotating component (21) includes a support beam (211) and an arc frame (212). The extension direction of the support beam (211) is perpendicular to the first direction. Both ends of the arc frame (212) are connected to the support beam (211). The first position and the second position are both located on the arc frame (212).

8. The transmission mechanism for a single-row flexible photovoltaic tracking bracket according to claim 7, characterized in that, The arc frame (212) has a wire groove, which extends along the extension direction of the arc frame (212), and the two driven cables (22) are respectively located in different areas of the wire groove.

9. The transmission mechanism for a single-row flexible photovoltaic tracking bracket according to claim 6, characterized in that, Each of the driven units (2) also includes a pair of reversing wheels (23), the two reversing wheels (23) respectively supporting the two driven cables (22).

10. A photovoltaic system, characterized in that, The system includes at least one row of flexible photovoltaic tracking brackets (100), the flexible photovoltaic tracking brackets (100) including a single-row flexible photovoltaic tracking bracket transmission mechanism as described in any one of claims 1-9, the flexible photovoltaic tracking brackets (100) further including a plurality of support units (120) arranged at intervals along a first direction, a plurality of driven units (2) of the single-row flexible photovoltaic tracking bracket transmission mechanism (110) being arranged one-to-one with the plurality of support units (120), the single-row flexible photovoltaic tracking bracket transmission mechanism (110) being able to adjust the tilt angle of the photovoltaic module (200).

Images