CN212060986U

CN212060986U - Photovoltaic power generation sun tracking device

Info

Publication number: CN212060986U
Application number: CN202020920689.0U
Authority: CN
Inventors: 邱启东; 陶治中; 邱立凡; 吴章爱; 李定颖
Original assignee: Progreens New Energy Technology Suzhou Co ltd
Current assignee: Progreens New Energy Technology Suzhou Co ltd
Priority date: 2020-05-27
Filing date: 2020-05-27
Publication date: 2020-12-01
Anticipated expiration: 2030-05-27

Abstract

The utility model relates to a photovoltaic power generation chases after a day device, including photovoltaic board, support base, circumference rotating part and horizontal elevation angle regulation portion. The circumferential rotation part includes a turntable bearing and a motor. The turntable bearing is horizontally arranged right above the supporting base and performs circumferential rotation motion around the central axis thereof under the action of the driving force of the motor. The horizontal elevation angle adjusting part comprises a base plate, a pitching plate, a connecting plate and a dragging unit. The base plate follows the circumference rotating part and carries out synchronous circumference rotary motion. The pitching plate is used for placing and fixing the photovoltaic panel and is hinged with the base plate. One end of the connecting plate is hinged on the pitching plate, and the other end of the connecting plate is driven by the dragging unit to perform directional displacement motion. Therefore, the direction of the photovoltaic panel can be adjusted in real time conveniently according to the solar direction and the light incidence angle, so that the direct irradiation of sunlight to the photovoltaic panel is ensured, and the solar radiation energy received by the photovoltaic panel in unit time is obviously increased.

Description

Photovoltaic power generation sun tracking device

Technical Field

The utility model belongs to the technical field of photovoltaic power generation system manufacture technique and specifically relates to a photovoltaic power generation chases after a day device.

Background

Solar energy is renewable energy which is widely distributed on the earth, has rich resources, can be used freely, does not need transportation, and has no pollution to the environment. It is estimated that about 1.7 × 105TW of solar energy is irradiated to the earth surface every year, and the potential value of the actually available solar energy is about 600 TW. There will also be an energy supply of approximately 60TW each year if only 10% of the solar energy is effectively used.

However, in the popularization process of the existing photovoltaic power generation technology, the market demand and the productivity are severely limited due to low photoelectric conversion efficiency. The reason for this is that: in the prior art, the photovoltaic panels are all of a fixed design structure (that is, the pitch angle and the relative rotation angle of the photovoltaic panels are fixed values), so that the heated angle is fixed, however, the incident angles of different sunlight along with time and season are different, and the solar radiation energy cannot be fully utilized. Thus, a skilled person is urgently needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a structural design is simple, is convenient for make the shaping, and tracks the photovoltaic power generation of sun in real time and chases after a day device.

In order to solve the technical problem, the utility model relates to a photovoltaic power generation chases after a day device, it includes the photovoltaic board, supports base, circumference rotating part and horizontal elevation angle adjustment portion. The circumferential rotation part includes a turntable bearing and a first motor. The first motor is detachably fixed on the supporting base. The turntable bearing is horizontally arranged right above the supporting base and performs circumferential rotation motion around the central axis thereof under the action of the driving force of the first motor. The horizontal elevation angle adjusting part comprises a base plate, a pitching plate, a connecting plate and a dragging unit. The base plate is detachably fixed on the upper plane of the turntable bearing and performs synchronous circumferential rotation motion along with the base plate. The pitching plate is used for placing and fixing the photovoltaic panel and is hinged with the left end part of the base plate. The left end part of the connecting plate is hinged on the pitching plate, and the right end part of the connecting plate is driven by the dragging unit to perform directional displacement motion along the left-right direction so as to drive the pitching plate to swing relative to the base plate.

As the utility model discloses technical scheme's further improvement, the aforesaid drags the unit and includes first bearing frame, first lead screw subassembly, power transmission subassembly and second motor. The second motor is fixed with the substrate. The first bearing seat is detachably fixed on the upper plane of the base plate. The first lead screw assembly includes a first lead screw and a first drive nut. The first screw rod crosses the first bearing seat. The power transmission assembly is arranged between the second motor and the first lead screw assembly so as to drive the first screw to perform circumferential rotation around the central axis of the first screw. The first transmission nut is sleeved on the first screw rod and used for converting the rotary motion into linear motion so as to drag the right end part of the connecting plate to carry out directional displacement motion.

As a further improvement of the technical solution of the present invention, the first screw assembly is preferably a ball screw assembly.

As a further improvement of the technical solution of the present invention, the power transmission assembly is preferably any one of a gear transmission assembly, a chain transmission assembly or a belt transmission.

As a modified design of the above technical solution, the dragging unit may also include a second bearing seat, a second lead screw assembly and a third motor. The second bearing seat is detachably fixed on the upper plane of the base plate. The second lead screw assembly includes a second screw and a second drive nut. The second screw rod crosses the second bearing seat. The third motor is preferably a DD direct drive motor, which is fixed to the substrate and whose rotor is directly used to drive the second screw to perform a circumferential rotation motion around its central axis.

As the utility model discloses technical scheme's further improvement, above-mentioned photovoltaic power generation chases after a day device still includes solar radiation intensity induction element, controller. The solar radiation intensity sensing unit comprises a mounting bracket and an illuminometer. The illumination meter is placed and fixed on the mounting bracket and is integrally mounted on the upper plane of the pitching plate to detect the solar radiation intensity in real time. The controller is connected with the illumination meter to send an action signal to the first motor or/and the dragging unit so as to drive the turntable bearing to perform circumferential rotation around the central axis of the turntable bearing or/and drive the pitching plate to swing relative to the base plate.

As the utility model discloses technical scheme's further improvement, above-mentioned photovoltaic power generation chases after a day device still includes the leveling unit, and carries out the equipartition along the periphery that supports the base. The leveling unit comprises a leveling bolt, a leveling nut and a locking nut. The bottom end surface of the leveling bolt always leans against the ground and vertically penetrates through the supporting base. The leveling nut is sleeved on the leveling bolt and always abuts against the bottom plane of the supporting base. The locking nut is also sleeved on the leveling bolt and always leans against the upper plane of the supporting base.

By adopting the technical scheme, the direction of the photovoltaic panel can be conveniently adjusted in real time according to the solar direction and the light incidence angle, so that the direct irradiation of sunlight to the photovoltaic panel is ensured, the solar radiation energy received by the photovoltaic panel in unit time is obviously increased, the electric energy generated by the photovoltaic panel is increased, namely, the photovoltaic power generation system is ensured to have higher photoelectric conversion efficiency, and therefore, the photovoltaic power generation system has greater market popularization and application values.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic perspective view of a first embodiment of a sun tracking device for photovoltaic power generation according to the present invention.

Fig. 2 is a top view of fig. 1.

Fig. 3 is a sectional view a-a of fig. 2.

Fig. 4 is an enlarged view of part I of fig. 3.

Fig. 5 is a schematic perspective view of another view angle of the first embodiment of the sun tracking device for photovoltaic power generation according to the present invention.

Fig. 6 is a schematic structural diagram of a second embodiment of the photovoltaic power generation sun tracking device according to the present invention.

1-a photovoltaic panel; 2-supporting the base; 3-a circumferentially rotating part; 31-a turntable bearing; 32-a first motor; 4-horizontal elevation angle adjusting part; 41-a substrate; 42-a pitch plate; 43-connecting plate; 44-a dragging unit; 441-a first bearing block; 442-a first lead screw assembly; 4421-a first screw; 4422-a first drive nut; 443-a gear assembly; 444-a second motor; 445-second bearing seat; 446 — a second lead screw assembly; 4461-a second screw; 4462-a second drive nut; 447-DD direct drive motor; 448-a balance wheel assembly; 5-solar radiation intensity sensing unit; 51-a mounting bracket; 52-an illuminometer; 6-leveling unit; 61-leveling bolts; 62-leveling nuts; and 63-locking the nut.

Detailed Description

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In order to facilitate the technical solution disclosed in the present invention to be fully understood by those skilled in the art, the following detailed description is made in conjunction with the specific embodiments, and fig. 1 shows a perspective view of a first embodiment of a photovoltaic power generation sun tracking device according to the present invention, which is mainly composed of a photovoltaic panel 1, a supporting base 2, a circumferential rotating portion 3, a horizontal elevation adjusting portion 4, and the like, wherein the circumferential rotating portion 3 includes a turntable bearing 31 and a first motor 32. The first motor 32 is detachably fixed to the support base 2. The turntable bearing 31 is disposed flat directly above the support base 2 and is subjected to a circumferential rotational movement about its central axis (as shown in fig. 5) by the driving force of the above-mentioned first motor 32. The horizontal elevation angle adjusting section 4 includes a base plate 41, a pitch plate 42, a link plate 43, and a drag unit 44. The base plate 41 is detachably fixed on the upper plane of the turntable bearing 31 and follows it to perform synchronous circumferential rotation movement, thereby adjusting the rotation angle of the photovoltaic panel 1 itself. The pitching plate 42 is used for placing and fixing the photovoltaic panel 1, and is hinged with the left end of the base plate 41. The left end of the link plate 43 is hinged to the pitch plate 42 by means of a hinge, while the right end thereof is driven by the dragging unit 44 to perform a directional displacement movement in the left-right direction to drive the pitch plate 42 to swing with respect to the base plate 41, thereby adjusting the pitch angle of the photovoltaic panel 1 itself (as shown in fig. 2 and 3). Therefore, in the practical application process of the photovoltaic power generation system, the direction of the photovoltaic panel 1 can be conveniently and adaptively adjusted in real time according to the solar direction and the light incidence angle, so that the direct radiation of the sunlight to the photovoltaic panel 1 is ensured, the solar radiation energy received by the photovoltaic panel 1 in unit time is obviously increased, the electric energy generated by the photovoltaic panel 1 is increased, and the photovoltaic power generation system is ensured to have higher photoelectric conversion efficiency, so that the photovoltaic power generation system has greater market popularization and application values.

The dragging unit 44 can be designed in various ways to drag the end of the connecting plate 43, but a simple structure is recommended here, which is beneficial to manufacturing and implementation and facilitates the later-period maintenance-free preferred structure, as follows: the dragging unit 44 mainly includes a first bearing seat 441, a first lead screw assembly 442, a gear transmission assembly 443, and a second motor 444. The second motor 444 is detachably fixed to the base plate 41 by means of screws. The first bearing housing 441 is also detachably fixed to the upper plane of the base plate 41 by means of screws. And the first lead screw assembly 442 includes a first lead screw 4421 and a first drive nut 4422. The first screw 4421 crosses the first bearing housing 441. A gear transmission assembly 443 is disposed between the second motor 444 and the first lead screw assembly 442 to drive the first lead screw 4421 to perform a circumferential rotational movement about the central axis thereof. The first transmission nut 4422 is sleeved on the first screw 4421 and is used for converting the rotational motion into a linear motion to drag the right end part of the connecting plate 43 to perform a directional displacement motion (as shown in fig. 2, 3 and 5).

It is known that a ball screw assembly has a small frictional resistance and has the characteristics of high precision, reversibility and high efficiency. In this regard, the first screw assembly 442 may preferably be a ball screw assembly according to specific design requirements.

Of course, in addition to the gear assembly 443 mentioned above, other gear assemblies may be rotated according to specific situations, such as: a chain drive assembly or a belt drive. However, it should be noted that, the above three design forms all have advantages and disadvantages, and for the development, specifically: the gear transmission assembly 443 (i.e., the transmission structure shown in fig. 3 and 5) and the chain transmission assembly have an accurate transmission ratio, and are not easy to slip during the operation process, so as to ensure accurate adjustment of the rotational orientation of the photovoltaic panel 1, but have the disadvantages of high purchase cost, high assembly precision requirement, and high post-maintenance cost. The belt transmission has the advantages of low requirement on assembly precision and low later maintenance cost, but the phenomenon of slipping is very easy to occur in the use process, so that the adjustment precision of the rotating direction of the photovoltaic panel 1 is reduced, and secondary correction is needed in the later period. The type of power transmission assembly may be selected by one skilled in the art depending on the particular situation.

In addition, it is known that when the first screw 4421 performs a circumferential rotation motion around its central axis, the first transmission nut 4422 performs a displacement motion along the length direction of the first screw 4421, however, in the above power conversion process, the first transmission nut 4422 itself also has a circumferential rotation tendency (i.e. a turning tendency), so that the connecting plate 43 connected with it is easily distorted, and therefore, the dragging unit 44 may be additionally provided with a balance wheel assembly 448 according to specific situations, as follows: the balance wheel assembly 448 includes two balance wheels and is symmetrically disposed on the left and right sides of the first transmission nut 4422 (as shown in fig. 1, 2 and 5), so that the left and right sides of the first transmission nut 4422 are balanced in force, and the occurrence of the flipping-over phenomenon is avoided.

As shown in fig. 1, in view of realizing intellectualization and automation of the orientation adjustment of the photovoltaic panel 1, as a further optimization of the structure of the photovoltaic power generation sun tracking device, a solar radiation intensity sensing unit 5 and a controller (not shown in the figure) may be added according to specific situations. The specific scheme is as follows: the solar radiation intensity sensing unit 5 includes a mounting bracket 51 and an illuminance meter 52. Wherein, the illuminance meter 52 is disposed and fixed on the mounting bracket 51 and is integrally mounted on the upper plane of the pitching plate 42 for real-time detection of the solar radiation intensity (as shown in fig. 5). The controller is connected to the illuminance meter 52 to send an action signal to the first motor 32 and/or the dragging unit 44 to drive the turntable bearing 31 to perform a circumferential rotation motion around its central axis or/and to drive the tilting plate 42 to perform a swinging motion relative to the base plate 41.

Furthermore, in order to ensure the stability and low noise during the practical application of the photovoltaic power generation sun tracking device, a leveling unit 6 (as shown in fig. 1) can be added according to specific situations. The method comprises the following specific steps: the number of the leveling units 6 is at least 3 groups, and the leveling units are uniformly distributed along the periphery of the supporting base 2. For the single group of leveling units 6, they each include a leveling bolt 61, a leveling nut 62, and a lock nut 63. The bottom end face of the leveling bolt 61 always leans against the ground and vertically penetrates through the supporting base 2. When the leveling unit 6 acts, the leveling nut 62 is sleeved on the leveling bolt 61 and always abuts against the bottom plane of the supporting base 2. The locking nut 63 is also sleeved on the leveling bolt 61 and always abuts against the upper plane of the supporting base 2 (as shown in fig. 4).

Fig. 6 shows a schematic structural diagram of a second embodiment of the photovoltaic power generation sun tracking device of the present invention, which is different from the first embodiment in that: the dragging unit 44 has different specific design forms, specifically as follows: in this embodiment, the dragging unit 44 includes a second bearing seat 445, a second lead screw assembly 446 and a third motor 447. The second bearing housing 445 is detachably fixed to the upper plane of the substrate 41. The second lead screw assembly 446 includes a second lead screw 4461 and a second drive nut 4462. The second screw 4461 traverses the second bearing block 445. The third motor 447 is preferably a DD direct drive motor detachably fixed to the base plate 41 by means of screws, and a rotor thereof is directly used to drive the second screw 4461 to perform a circumferential rotation motion around a central axis thereof. The DD direct drive motor 447 is different from the conventional second motor 444, and the large torque of the product enables the product to be directly connected with a moving device, so that connecting mechanisms such as a speed reducer, a gear box, a transmission assembly and the like are omitted, the design structure of the dragging unit 44 is effectively simplified, and the self weight of the photovoltaic power generation sun tracking device is reduced.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A photovoltaic power generation sun tracking device is characterized by comprising a photovoltaic plate, a supporting base, a circumferential rotating part and a horizontal elevation angle adjusting part; the circumferential rotating part comprises a turntable bearing and a first motor; the first motor is detachably fixed on the supporting base; the turntable bearing is horizontally arranged right above the supporting base and performs circumferential rotary motion around the central axis of the turntable bearing under the action of the driving force of the first motor; the horizontal elevation angle adjusting part comprises a base plate, a pitching plate, a connecting plate and a dragging unit; the base plate is detachably fixed on the upper plane of the turntable bearing and performs synchronous circumferential rotation motion along with the base plate; the pitching plate is used for placing and fixing the photovoltaic plate and is hinged with the left end part of the base plate; the left end part of the connecting plate is hinged to the pitching plate, and the right end part of the connecting plate is driven by the dragging unit to perform directional displacement motion along the left-right direction so as to drive the pitching plate to swing relative to the base plate.

2. The photovoltaic power generation sun tracking device of claim 1, wherein the dragging unit comprises a first bearing block, a first lead screw assembly, a power transmission assembly and a second motor; the second motor is fixed with the substrate; the first bearing seat is detachably fixed on the upper plane of the base plate; the first lead screw assembly comprises a first screw and a first transmission nut; the first screw rod traverses the first bearing seat; the power transmission assembly is arranged between the second motor and the first lead screw assembly so as to drive the first screw rod to perform circumferential rotary motion around the central axis of the first screw rod; the first transmission nut is sleeved on the first screw rod and used for converting rotary motion into linear motion so as to drag the right end part of the connecting plate to carry out directional displacement motion.

3. The photovoltaic power generation sun tracking device of claim 2, wherein the first screw assembly is a ball screw assembly.

4. The photovoltaic power generation solar tracking device of claim 2, wherein the power transmission assembly is any one of a gear transmission assembly, a chain transmission assembly or a belt transmission.

5. The photovoltaic power generation sun tracking device of claim 1, wherein the dragging unit comprises a second bearing seat, a second lead screw assembly and a third motor; the second bearing seat is detachably fixed on the upper plane of the base plate; the second lead screw assembly comprises a second screw and a second transmission nut; the second screw rod traverses the second bearing seat; the third motor is a DD direct drive motor, is fixed with the substrate, and a rotor of the third motor is directly used for driving the second screw to perform circumferential rotation around a central axis of the second screw.

6. A photovoltaic power generation sun tracking device according to any one of claims 1 to 5, further comprising a solar radiation intensity sensing unit, a controller; the solar radiation intensity sensing unit comprises a mounting bracket and an illuminometer; the illumination meter is placed and fixed on the mounting bracket, and is integrally mounted on the upper plane of the pitching plate to detect the solar radiation intensity in real time; the controller is connected with the illuminance meter to send an action signal to the first motor or/and the dragging unit so as to drive the turntable bearing to perform circumferential rotation around the central axis of the turntable bearing or/and drive the pitching plate to swing relative to the base plate.

7. A photovoltaic power generation sun tracking device according to any one of claims 1 to 5, further comprising leveling units, and being evenly distributed along the periphery of the support base; the leveling unit comprises a leveling bolt, a leveling nut and a locking nut; the bottom end surface of the leveling bolt always abuts against the ground and vertically penetrates through the supporting base; the leveling nut is sleeved on the leveling bolt and always abuts against the bottom plane of the supporting base; the locking nut is also sleeved on the leveling bolt and always abuts against the upper plane of the supporting base.