WO2020125548A1

WO2020125548A1 - Tracking system for photovoltaic component

Info

Publication number: WO2020125548A1
Application number: PCT/CN2019/125016
Authority: WO
Inventors: 张国良; 韩鹏宇; 黄凯; 蔡武刚
Original assignee: 苏州阿特斯新能源发展股份有限公司; 苏州斯特力电力开发有限公司
Priority date: 2018-12-19
Filing date: 2019-12-13
Publication date: 2020-06-25

Abstract

A tracking system for a photovoltaic component, comprising a support frame (1) and a rotary beam (2) rotatably disposed on the support frame (1), fixing the photovoltaic component, and extending along a first direction, and further comprising a function rod (3) and a drive device, the function rod (3) comprising a fixed end (31) fixedly connected to the rotary beam (2) and a drive end (32) connected to the drive device; the drive device being used for driving the drive end (32) of the function rod (3) to move and driving the rotary beam (2) to rotate by means of the fixed end (31). The tracking system drives the rotary beam (2) to rotate by means of the function rod (3) so that the photovoltaic component fixed on the rotary beam (2) rotates. The tracking system is simple in structure, is more stable, is conveniently mounted and maintained, and has the reliability improved.

Description

Tracking system for photovoltaic modules

Technical field

The invention relates to the technical field of solar power generation, in particular to a tracking system for photovoltaic modules.

Background technique

With the development of clean energy, photovoltaic power plants have been used more and more. In order to effectively increase the annual power generation of photovoltaic power plants, the photovoltaic module tracking system has been favored by large-scale photovoltaic power plant projects. The photovoltaic module tracking system adjusts the orientation of the photovoltaic modules mounted on it so that the photovoltaic modules are always facing the sun, so as to obtain the maximum amount of radiation and improve the power generation efficiency of the entire photovoltaic power plant.

In the prior art, a flat single-axis photovoltaic tracking bracket is generally used, that is, the driving unit drives the north-south torque beam to rotate, so that the photovoltaic components installed on the torque beam swing in the east-west direction to achieve the tracking effect. Among them, the drive unit mainly includes a rotary reduction motor, an electric push cylinder, etc. The drive unit is directly and rigidly connected to the rotary actuator of the tracking bracket to provide power for tracking. However, when a strong wind occurs, the above drive unit will be directly hit by the impact of continuously changing direction, without any buffer, and it is easy to reduce the life of the drive unit; and, in order to resist strong winds, the above flat single-axis photovoltaic tracking bracket needs to strengthen the structural strength, such as Choose higher-strength materials, reinforced material thickness and size, etc., which not only increases the cost, but also increases the installation difficulty; in addition, the above drive unit must be erected near the same level as the torque beam, which causes When the photovoltaic tracking bracket is high, the drive unit also needs to be built very high, which is easy to be restricted by the geographical location of the site, which increases the difficulty of installation and operation and maintenance work.

Therefore, it is necessary to provide a new tracking system for photovoltaic modules.

Summary of the invention

The purpose of the present invention is to provide a tracking system for photovoltaic modules, which has a simple structure, more convenient installation and maintenance, and more stable and reliable work.

To achieve the above object of the invention, the present invention provides a tracking system for a photovoltaic module, including a support frame, a rotating beam rotatably disposed on the support frame and used for fixing the photovoltaic module, the rotating beam extending in a first direction The tracking system also includes an actuating rod and a driving device, the actuating rod has a fixed end fixedly connected to the rotating beam and a driving end connected to the driving device, the driving device is used to drive the The driving end of the actuating rod moves, and drives the rotating beam to rotate through the fixed end.

As a further improvement of the present invention, the support frame includes a base; the driving device includes a traction mechanism, a slide rail mechanism disposed on the base and extending in a second direction perpendicular to the first direction, and capable of sliding along the The sliding member of the rail mechanism sliding, the sliding member having a base connected to the actuating rod.

As a further improvement of the present invention, the sliding member further includes lower rollers disposed on both sides of the base in the second direction, and the slide rail mechanism includes a slideway for receiving the lower roller; the lower roller may Roll back and forth within the slideway.

As a further improvement of the present invention, the slider further includes an upper roller disposed on both sides of the base in the second direction and above the lower roller, and the slide rail mechanism includes a slider disposed above the slide Rail; the upper roller can roll back and forth on the slide rail.

As a further improvement of the present invention, the base is provided hollow to accommodate the actuating rod; the slider also includes a pair of pendulum blocks located in the base opposite to each other along the first direction, and a pair of pendulums Rollers between the blocks and in contact with the surface of the actuating rod.

As a further improvement of the present invention, the sliding member further has a connecting shaft extending in the first direction and used to rotatably connect the swing block and the base.

As a further improvement of the present invention, the actuating rod is configured as a telescopic rod, and the driving end is telescopically movable relative to the fixed end.

As a further improvement of the present invention, the base portion is provided with a drive shaft extending in a first direction, the drive end is provided with a mounting hole for mounting the drive shaft in the first direction, and the drive end may be opposite to the drive Axis rotation.

As a further improvement of the present invention, the actuating rod includes an inner tube and an outer tube sleeved on the inner tube, the fixed end is formed on the upper end of the outer tube, and the driving end is formed on the inner tube Lower end; during the rotation of the rotating beam driven by the actuating rod, the inner tube performs a telescopic movement relative to the outer tube.

As a further improvement of the present invention, the actuating rod further includes a wear-resistant filler filled between the inner tube and the outer tube.

As a further improvement of the present invention, the traction mechanism includes a traction rope, a winch provided on one side of the base and used for winding the traction rope, and a steering mechanism; both ends of the slider along the second direction are formed with the The fixed part connected with the traction rope.

As a further improvement of the present invention, the steering mechanism includes a pair of steering wheels disposed at both ends of the slide rail mechanism in the second direction.

As a further improvement of the present invention, the support frame further includes a positioning column fixed to the base and forming a triangular structure with the base, and the rotating beam is rotatably connected to the positioning column.

Compared with the prior art, the beneficial effect of the present invention is that the tracking system for photovoltaic modules of the present invention drives the driving end of the actuating rod to swing through the driving device to drive the rotating beam to rotate, thereby making it fixed on the rotating beam Of the photovoltaic modules rotate with the direction of the sun, improving the power generation efficiency of the photovoltaic modules. The invention has simple structure, more convenient installation and maintenance, lowers on-site installation requirements, and works more stable and reliable under strong wind weather conditions.

BRIEF DESCRIPTION

1 is a perspective schematic view of a preferred embodiment of the tracking system for photovoltaic modules of the present invention;

Figure 2 is a front view of the tracking system in Figure 1;

Figure 3 is a top view of the tracking system in Figure 1;

4 is a side view of the tracking system in FIG. 1;

5 is a perspective schematic view of the slider of the tracking system in FIG. 1;

6 is a front view of the slider in FIG. 5;

7 is a top view of the sliding member in FIG. 5;

8 is a side view of the slider in FIG. 5;

9 is a perspective schematic view of another preferred embodiment of the tracking system for photovoltaic modules of the present invention;

10 is a top view of the tracking system in FIG. 9;

11 is a schematic structural view of the actuating rod of the tracking system in FIG. 9;

FIG. 12 is a schematic structural diagram of the slider of the tracking system in FIG. 9.

100-tracking system; 1-support frame; 11-base; 12-positioning column; 2-rotating beam; 3-actuation rod; 31-fixed end; 311-hoop; 32-drive end; 321-mounting hole; 33-outer tube; 331-convex shaft; 34-inner tube; 4-traction mechanism; 41-traction rope; 42-winch; 43-steering mechanism; 431-reversing wheel; 5-slide rail mechanism; 51-slideway 511-upper wall surface; 512-lower wall surface; 52-slide rail; 6-slider; 61-base portion; 611-positioning portion; 612-drive shaft; 62-lower roller; 63-upper roller; 64-fixing portion; 65-swing block; 66-roller; 67-connecting shaft.

detailed description

The present invention will be described in detail below with reference to specific embodiments shown in the drawings. However, these embodiments do not limit the present invention, and structural, method, or functional changes made by those of ordinary skill in the art according to these embodiments are included in the protection scope of the present invention.

Example one:

As shown in FIGS. 1 to 8, the present invention provides a tracking system 100 for a photovoltaic module including a supporting frame 1 and a rotating beam 2 rotatably provided on the supporting frame 1 for fixing the photovoltaic module. The beam 2 extends in the first direction; the tracking system 100 further includes an actuating lever 3 and a driving device, the actuating lever 3 has a fixed end 31 fixedly connected to the rotating beam 2 and a driving end connected to the driving device The driving end 32 is used to drive the driving end 32 of the actuating rod 3 to move, and drives the rotating beam 2 to rotate through the fixed end 31.

The tracking system 100 can make the photovoltaic component mounted on it face the sun, and the photovoltaic component can obtain the maximum amount of irradiation and improve the power generation efficiency. To describe this solution more clearly here, define a first direction and a second direction that are perpendicular to each other, the first direction is the north-south direction, and the second direction is the east-west direction. That is to say, through the rotation of the rotating beam 2, the orientation of the corresponding photovoltaic module can be adjusted in the east-west direction.

Specifically, the support frame 1 includes a base 11 and a positioning column 12 fixed on the base 11 and forming a triangular support structure with the base 11. The rotating beam 2 is rotatably connected to the positioning column 12. In this embodiment, two positioning posts 12 are provided and are oppositely arranged on the base 11 along the first direction. Any one of the positioning posts 12 is composed of a pair of upright posts (not labeled) connected to each other at the upper end. The rotating beam 2 is rotatably connected to the positioning unit 12 through a corresponding bearing seat structure. The positioning column 12 can stably support the rotating beam 2 to which the photovoltaic module is fixed, so that the rotating beam 2 can rotate relative to the positioning column 12 under the driving of the fixed end 31 of the actuating rod 3. Of course, the positioning post 12 can also adopt other structures. As long as the rotating beam 2 is stably supported and the rotating beam 2 can rotate relative to the positioning post 12, the design requirements of the present invention can be met.

In this embodiment, the rotating beam 2 and the actuating rod 3 are both hollow rectangular tubes and are arranged perpendicular to each other. The fixed end 31 of the actuating rod 3 passes through the rectangular hoop 311 and the rotating beam The two phases are fixed to form a more stable T-shaped swing structure. The length of the actuating rod 3 can be adjusted according to actual needs to facilitate use.

The driving device includes a traction mechanism 4, a slide rail mechanism 5 disposed on the base 11 and extending in the second direction, and a slider 6 that is pulled by the traction mechanism 4 to slide along the slide rail mechanism 5. Wherein, the actuating rod 3 is connected to the sliding member 6, and the sliding member 6 is driven to move in the second direction by the traction mechanism 4, so that the actuating rod 3 connected to the sliding member 6 moves, In turn, the rotating beam 2 is driven to rotate. When the tracking system 100 encounters strong winds, the impact force is transmitted from the actuating rod 3 to the traction mechanism 4, the slide 6 and the slide rail mechanism 5, and the traction mechanism 4, the slide 6 and the slide rail mechanism 5 are shared together Withstanding the impact force greatly improves the stability of the tracking system 100.

The slider 6 has a base 61 connected to the actuating lever 3, a lower roller 62 and an upper roller 63 provided on both sides of the base 61 in the second direction, and the upper roller 63 is located above the lower roller 62 The slide rail mechanism 5 includes a slide rail 51 for accommodating the lower roller 62, and a slide rail 52 provided above the slide rail 51. The lower roller 62 can roll back and forth in the slide rail 51; the upper roller 63 can roll back and forth on the slide rail 52. In addition, the slider 6 also has fixing portions 64 formed on both ends of the base portion 61 in the second direction.

The base portion 61 is provided in a hollow shape to accommodate the actuating rod 3. The base portion 61 is specifically provided in a rectangular frame structure and penetrates up and down in the middle. The lower roller 62 is disposed close to the outer surface of the base 6 in the first direction, and the lower roller 62 is disposed in a ring shape. The base portion 61 has a positioning portion 611 formed to protrude upward, the upper roller 63 is rotatably mounted on the positioning portion 611, and the upper roller 63 is relatively disposed on the lower roller 62 away from the base portion in the first direction On one side of 61, the upper roller 63 is recessed to form a riding portion (not labeled) that cooperates with the slide rail 52.

The slide rail 51 and the slide rail 52 are both disposed between the two positioning posts 12. The slideway 51 has an upper wall surface 511 and a lower wall surface 512, and the lower roller 62 is clamped in the upper wall surface 511 and the lower wall surface 512 of the slideway 51 to prevent the lower roller 62 from coming off the slideway 51 . The slide rail 52 is formed by the upper wall surface 511 of the slide rail 51 protruding upward, the riding portion is erected on the protruding slide rail 52, and the upper roller 63 can be along the slide rail 52 scrolls back and forth. The upper roller 63 is clamped on the sliding rail 52 by a riding portion, which can avoid the positional deviation of the sliding member 6 when sliding in the second direction, and ensure the working reliability of the sliding member 6 when facing strong wind .

The slider 6 further includes a pair of pendulum blocks 65 located in the base 61 and opposite to each other in the first direction, and a roller 66 disposed between the pair of pendulum blocks 65 and abutting on the surface of the actuating rod 3 . The pendulum block 65 is rotatably connected to the base 61, and the slider 6 further includes a connecting shaft 67 extending in the first direction and used to connect the pendulum block 65 and the base 61. Here, two rollers 66 are provided, and the two rollers 66 respectively abut on both side surfaces of the actuating rod 3 in the second direction. When the traction mechanism 4 drives the slider 6 to move in the second direction, the driving end 32 of the actuating rod 3 moves accordingly, and the swing block 65 rotates at an angle relative to the base 61, so that the When the actuating rod 3 moves relative to the roller 66, both of the rollers 66 are in contact with the actuating rod 3 in a direction perpendicular to the surface of the actuating rod 3, and the actuating rod 3 is effectively limited , High stability. When the actuating rod 3 reciprocates with the slider 6, the length of the portion of the actuating rod 3 that protrudes downward beyond the base 61 changes accordingly. Of course, in order to make the movement of the actuating rod 3 relative to the roller 66 smoother, the roller 66 may be rotatably disposed on the swing block 65.

The traction mechanism 4 includes a traction rope 41, a winch 42 provided on the side of the base 11 and used for winding the traction rope, and a steering mechanism 43. The traction rope 41 can generally be a steel wire rope of a predetermined specification, and the flexible connection between the hoist 42 and the steering mechanism 43 and the sliding member 6 is achieved through the traction rope 41 to prevent the external impact force from directly acting on the hoist 42 to further improve the The safety and reliability of the tracking system 100. The steering mechanism 43 includes a pair of reversing wheels 431 disposed at both ends of the slide rail mechanism 5 in the second direction. Both ends of the traction rope 41 can be connected to the The two fixing portions 64 of the slider 6 are connected. In addition, the installation position of the hoist 42 of the traction mechanism 4 is not limited, and can be installed at a lower position in the tracking system 100, which greatly reduces the difficulty of on-site installation. Here, the hoisting machine 42 may be disposed at a position corresponding to the rotating beam 2, so that the length of the partial traction rope 41 between the two diverting wheels 431 and the hoisting machine 42 tends to be consistent with the force state. When the tracking system 100 encounters strong wind or external impact, the traction rope 41 can buffer the impact of external impact. The tracking system 100 realizes flexible driving, which changes the strength shortage caused by the rigid connection structure in the conventional technology, and is easy to be damaged under the impact of external impact, and the service life is reduced.

Obviously, when the tracking system 100 is applied to power plant projects with high installation height and difficulty, such as agricultural/fishing-light complementary, the length of the actuating rod 3 needs to be appropriately increased, and the winch 42 is installed at the same height The lower location reduces installation costs and facilitates future replacement and maintenance.

Example two:

9 to 12 show another preferred embodiment of the present application, the actuating rod 3 is configured as a telescopic rod, and the driving end 32 is telescopically movable relative to the fixed end 31. The actuating rod 3 is mainly formed by hollowly coupling an outer tube 33 and an inner tube 34, the fixed end 31 is formed at the upper end of the outer tube 33, and the driving end 32 is formed at the lower end of the inner tube 34 . Through the above design, the actuating rod 3 is always located between the base 11 and the rotating beam 2 to prevent the actuating rod 3 from protruding downward beyond the sliding member 6, the structure is more concise and beautiful, and can avoid the ground The possible impact of the installation environment on the moving process of the actuating rod 3 ensures the flexibility of the tracking system 100 in adjusting operation.

The fixed end 31 of the actuating rod 3 is also fixedly connected to the rotating beam 2 by a hoop 311. In addition, a convex shaft 331 is formed on the outer tube 33 of the actuating rod 3 to facilitate the installation and positioning of other components, and multiple rows of linkage can also be achieved through the corresponding connection structure. Of course, the actuating rod 3 may also be provided with other telescopic structures, for example, multiple tube bodies are nested in sequence or additional telescopic auxiliary parts are added, as long as the effect of enabling the actuating rod 3 to telescopically move is achieved Within the scope of protection of the invention. Preferably, the actuating rod 3 further includes a wear-resistant filler filled between the inner tube 34 and the outer tube 33 to avoid damage to the inner tube 34 and the outer tube 33 due to direct friction To increase the service life of the actuating rod 3.

In this embodiment, the base 61 is provided with a drive shaft 612 extending in the first direction, the drive end 32 is provided with a mounting hole 321 for mounting the drive shaft 612 in the first direction, and the drive end 32 It is rotatably disposed relative to the drive shaft 612. Under the action of the driving device, while the driving end 32 moves in the second direction, the inner tube 34 performs a telescopic movement relative to the outer tube 33, so that the overall length of the actuating rod 3 changes And keep the height of the driving end 32 unchanged. The specific setting method and working process of the driving device are similar to the foregoing embodiments, and are not repeated here one by one.

In addition, it should be noted that the driving end 32 of the actuating rod 3 and the sliding member 6 can also be connected and matched in other ways, as long as the sliding member 6 is driven by the traction mechanism 4 The movement in the second direction can drive the driving end of the actuating rod 3 to move, thereby driving the rotating beam 2 to rotate to achieve the object of the present invention.

In summary, the tracking system 100 of the present invention drives the driving end 32 of the actuating rod 3 to swing through the driving device to drive the rotating beam 2 to rotate, thereby causing the photovoltaic component fixed on the rotating beam 2 to rotate along with the direction of sun irradiation. Improve the power generation efficiency of photovoltaic modules. The invention has simple structure, more convenient installation and maintenance, lowers on-site installation requirements, has stronger impact resistance, and works more stable and reliable under strong wind and other weather conditions.

It should be understood that although the description is described according to the embodiments, not every embodiment only includes an independent technical solution. This description of the description is only for clarity, and those skilled in the art should take the description as a whole, each The technical solutions in the embodiments can also be combined appropriately to form other embodiments that can be understood by those skilled in the art.

The series of detailed descriptions listed above are only specific descriptions of feasible embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Any equivalent embodiments or changes made without departing from the technical spirit of the present invention All should be included in the protection scope of the present invention.

Claims

A tracking system for a photovoltaic module includes a support frame, a rotating beam rotatably arranged on the support frame and used for fixing the photovoltaic module, the rotating beam extending in a first direction, characterized in that the tracking system further It includes an actuating rod and a driving device, the actuating rod has a fixed end fixedly connected to the rotating beam and a driving end connected to the driving device, the driving device is used to drive the driving end of the actuating rod Move, and drive the rotating beam to rotate through the fixed end.
The tracking system according to claim 1, characterized in that: the support frame includes a base; the driving device includes a traction mechanism, a slide rail disposed on the base and extending in a second direction perpendicular to the first direction Mechanism, a sliding member slidable along the sliding rail mechanism, the sliding member having a base connected to the actuating rod.
The tracking system according to claim 2, wherein the sliding member further includes lower rollers disposed on both sides of the base in the second direction, and the slide rail mechanism includes a sliding member for accommodating the lower roller Road; the lower roller can roll back and forth within the slide.
The tracking system according to claim 3, wherein the slider further includes an upper roller disposed on both sides of the base in the second direction and above the lower roller, and the slide rail mechanism includes a A slide rail above the slide rail; the upper roller can roll back and forth on the slide rail.
The tracking system according to claim 2, characterized in that: the base is provided in a hollow shape to accommodate the actuating rod; and the slider further includes a pair of pendulums located in the base and oppositely arranged along the first direction Block, a roller arranged between a pair of swing blocks and in contact with the surface of the actuating rod.
The tracking system according to claim 5, wherein the sliding member further has a connecting shaft extending in the first direction and used to rotatably connect the swing block and the base.
The tracking system according to claim 2, wherein the actuating rod is configured as a telescopic rod, and the driving end is telescopically movable relative to the fixed end.
The tracking system according to claim 7, wherein the base portion is provided with a drive shaft extending in a first direction, and the drive end is provided with a mounting hole for mounting the drive shaft in the first direction, the The driving end can rotate relative to the driving shaft.
The tracking system according to claim 7, wherein the actuating rod includes an inner tube and an outer tube sleeved on the inner tube, the fixed end is formed on the upper end of the outer tube, and the drive The end is formed at the lower end of the inner tube; during the rotation of the rotating beam driven by the actuating rod, the inner tube performs a telescopic movement relative to the outer tube.
The photovoltaic module tracking system according to claim 9, wherein the actuating rod further comprises a wear-resistant filler filled between the inner tube and the outer tube.
The tracking system according to claim 2, characterized in that the traction mechanism includes a traction rope, a winch provided on one side of the base and used to wind the traction rope, a steering mechanism; A fixing portion connected to the traction rope is formed at both ends.
The tracking system according to claim 11, wherein the steering mechanism includes a pair of reversing wheels disposed at both ends of the slide rail mechanism in a second direction.
The tracking system according to claim 2, wherein the support frame further includes a positioning column fixed to the base and forming a triangular structure with the base, the rotating beam is rotatably connected to the positioning column .