CN214315174U

CN214315174U - Photovoltaic power generation device

Info

Publication number: CN214315174U
Application number: CN202120517788.9U
Authority: CN
Inventors: 温伟刚; 刘兴革; 高彩霞
Original assignee: Li Xing Kai Beijing Energy System Technology Co ltd
Current assignee: Li Xing Kai Beijing Energy System Technology Co ltd
Priority date: 2021-03-11
Filing date: 2021-03-11
Publication date: 2021-09-28
Anticipated expiration: 2031-03-11

Abstract

The application discloses photovoltaic power generation device, this photovoltaic power generation device includes: a base including a rotary table that is automatically rotatable about a vertical central axis; the photovoltaic module is obliquely arranged on the rotary workbench and comprises a photovoltaic panel for converting solar energy into electric energy and a photosensitive sensor for sensing the direction of a light source; and the controller is used for receiving the light source information fed back by the photosensitive sensor and controlling the rotating workbench to rotate so as to enable the photovoltaic panel to face the light source direction. According to the technical scheme of this application, this photovoltaic power generation device can be according to the control to the light source direction around the device, the orientation of automatic adjustment photovoltaic board to can improve the luminous energy utilization efficiency.

Description

Photovoltaic power generation device

Technical Field

The application relates to the field of solar power generation, in particular to a photovoltaic power generation device.

Background

Photovoltaic power generation is a technology for directly converting light energy into electric energy by utilizing the photovoltaic effect of a semiconductor interface, and as the social demand for new energy increases, the construction requirements of photovoltaic power stations are increasing day by day. In the construction process of a photovoltaic power station, environmental factors are important factors for restricting the development of the photovoltaic power station.

When setting up photovoltaic power generation facility in the tradition, select the spacious and abundant area in sunshine of environment usually, lay the photovoltaic unit array on ground. However, the angle of sunlight varies to different degrees with different times of the day or with different seasons, which results in that the photovoltaic unit cannot always maintain efficient use of solar energy. Moreover, when the wind is strong or the weather is bad, the existing photovoltaic power generation device lacks an effective coping means, so that the service life is shortened, and the maintenance cost is increased.

Therefore, how to provide a photovoltaic power generation device which can not only cope with severe weather environment but also can efficiently utilize solar energy becomes a technical problem to be solved in the field.

SUMMERY OF THE UTILITY MODEL

In view of this, the present application provides a photovoltaic power generation device to realize coping with the adverse weather environment and utilize solar energy efficiently.

According to the present application, a photovoltaic power generation apparatus is provided, the photovoltaic power generation apparatus including: a base including a rotary table that is automatically rotatable about a vertical central axis; the photovoltaic module is obliquely arranged on the rotary workbench and comprises a photovoltaic panel for converting solar energy into electric energy and a photosensitive sensor for sensing the direction of a light source; and the controller is used for receiving the light source information fed back by the photosensitive sensor and controlling the rotating workbench to rotate so as to enable the photovoltaic panel to face the light source direction.

Preferably, an air volume sensor is arranged on the rotary worktable, and the air volume sensor is used for measuring wind power and/or wind direction information and sending the information to the controller.

Preferably, the air quantity sensor is provided with a preset value, when the wind power measured by the air quantity sensor is smaller than the preset value, the air quantity sensor does not feed back information to the controller, and the controller controls the rotating workbench to rotate according to the information fed back by the photosensitive sensor, so that the photovoltaic panel faces the light source direction; when the wind power measured by the wind sensor is larger than or equal to the preset value, the wind sensor feeds back wind power and/or wind direction information to the controller, and the controller controls the rotary workbench to rotate so that the photovoltaic panel faces the direction of the wind power source.

Preferably, the air volume sensors are uniformly arranged at the edge of the rotary workbench and used for simultaneously measuring the wind strength of the rotary workbench in multiple directions.

Preferably, photovoltaic module includes the foundatin plate, this foundatin plate with contained angle alpha between the swivel work head is adjustable, the photovoltaic board with photosensitive sensor install in on the foundatin plate.

Preferably, one side of the base plate facing the rotary workbench comprises a first connecting end and a second connecting end, the first connecting end is hinged to the rotary workbench, a linear driver is connected between the second connecting end and the rotary workbench, and the linear driver is electrically connected with the controller and used for receiving a command sent by the controller so as to enable the second connecting end to approach or be far away from the rotary workbench; or a swinging mechanism is arranged on the rotary workbench, the foundation plate is installed on the swinging mechanism, and the swinging mechanism is electrically connected with the controller and used for receiving an instruction sent by the controller to control the included angle to be increased or decreased.

Preferably, two ends of the linear driver are respectively hinged on the second connecting end and the rotary worktable; or the second connecting end comprises a sliding groove arranged towards the first connecting end and a sliding block capable of sliding in the sliding groove, one end of the linear driver is fixedly arranged on the rotary workbench, and the other end of the linear driver is hinged to the sliding block.

Preferably, the linear driver is any one of a direct drive motor, a hydraulic cylinder or an air cylinder.

Preferably, the number of the photosensitive sensors is multiple, the plurality of the photosensitive sensors are arranged around the photovoltaic panel, and the controller controls the rotating table to rotate and/or controls the included angle alpha to increase or decrease according to the received information fed back by the plurality of the photosensitive sensors, so that the photovoltaic panel faces the direction of the light source.

Preferably, the light-sensitive sensor is arranged to perform a periodic measurement of the direction of the light source, the time interval between any two measurement operations of the light-sensitive sensor being at least 10-120 minutes.

Preferably, the base includes a lifting bracket, and the rotary table is rotatably disposed on the lifting bracket.

According to the technical scheme of this application, photosensitive sensor and wind sensor can monitor light source direction and wind-force size around the photovoltaic power generation device respectively to make the controller can rotate photovoltaic module to suitable angle according to light source and the wind-force information control swivel work head that detect. For example, when no wind exists or the wind force is small, the rotary worktable rotates along with the change of the angle of the light source, so that the photovoltaic module receives the light energy to the maximum extent; when the wind power is large, the rotary workbench rotates to enable the inclined photovoltaic panel to face the direction of the wind power source, so that the influence of the large wind on the power generation device is reduced. Therefore, the photovoltaic power generation device capable of coping with severe weather environments (such as windy weather) and efficiently utilizing solar energy is provided.

Additional features and advantages of the present application will be described in detail in the detailed description which follows.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate an embodiment of the invention and, together with the description, serve to explain the invention. In the drawings:

fig. 1, 2 and 3 are schematic structural views of photovoltaic power generation devices according to various embodiments of the present application.

Detailed Description

The technical solutions of the present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1, the present application provides a photovoltaic power generation apparatus including: a base 10, the base 10 including a rotary table 11 automatically rotatable about a vertical central axis I; a photovoltaic module 20, the photovoltaic module 20 being obliquely arranged on the rotary table 11, the photovoltaic module 20 including a photovoltaic panel 22 for converting solar energy into electric energy and a photosensor 23 for sensing a direction of a light source; and the controller 30 is used for receiving the light source information fed back by the photosensitive sensor 23 and controlling the rotating table 11 to rotate so as to enable the photovoltaic panel to face the light source direction. According to the technical scheme of this application, when the inclination that leads to sunshine because change or season difference changes, controller 30 can be rotatory according to the rotatory workstation 11 of light source information control that photosensitive sensor 23 feedbacks to make photovoltaic module 20's photovoltaic board 22 face the light source direction all the time, thereby improve the utilization efficiency of light energy. On the other hand, when the severe weather environment such as strong wind weather is met, the rotating workbench 11 can be controlled to rotate to enable the photovoltaic module 20 to incline towards the wind source direction, so that the influence of wind power on the photovoltaic module 20 is reduced, the service life of the photovoltaic power generation device is prolonged, and the maintenance cost is reduced.

In the photovoltaic power generation apparatus, the rotary table 11 includes a mounting table for mounting the photovoltaic module 20 and a rotary driving device for driving the mounting table to rotate, and the rotary driving device may be a rotary driving device such as a motor, or may be a linear driving device such as a hydraulic cylinder, and is matched with a rack and pinion to realize rotary driving, and preferably, the rotary driving device is a servo motor for precisely controlling the rotation direction of the rotary table 11 according to the instruction of the controller 30. The controller 30 may be disposed on the base 10 or on the photovoltaic module 20, the controller 30 may be a programmable logic controller for automatically sending a working instruction according to information fed back by the sensor, and/or the controller 30 is connected to a remote control terminal through a wired connection or a wireless connection for an operator to remotely control the controller 30 to send an instruction through the operation terminal.

In windy weather, in order to enable the photovoltaic power generation device to accurately respond according to the wind direction, the photovoltaic power generation device can be further provided with a wind direction measuring mechanism for feeding back wind direction information in real time so that the rotating workbench 11 can correspondingly adjust the rotating angle according to the wind direction change. Preferably, as shown in fig. 1 to 3, an air volume sensor 12 is disposed on the rotary table 11, and the air volume sensor 12 is used for measuring wind power and/or wind direction information and transmitting the information to the controller 30. The controller 30 can adjust the rotation direction of the rotary table 11 in time according to the wind force and/or wind direction information fed back by the wind volume sensor 12, thereby further improving the reliability of the photovoltaic power generation apparatus. This photovoltaic power generation device's base 10 is preferred still to include lifting support 19, swivel work head 11 rotatably sets up on lifting support 19 to through this lifting support 19 with swivel work head 11 and photovoltaic module 20 lift in order to guarantee normal use under the circumstances of ground snow or ponding, further improved this photovoltaic power generation device to bad weather's adaptability.

According to the photovoltaic power generation apparatus described above, the controller 30 may be provided with a predetermined value for the magnitude of the wind power fed back by the wind volume sensor 12, or the wind volume sensor 12 itself may be provided with a predetermined value that is a value of the magnitude of the current wind power measured by the wind volume sensor 12. When the wind power measured by the wind sensor 12 is less than a preset value, the wind sensor 12 does not feed back information to the controller 30, and the controller 30 controls the rotary worktable 11 to rotate according to the information fed back by the photosensitive sensor 23, so that the photovoltaic panel 22 faces the light source direction; when the wind power measured by the wind sensor 12 is greater than or equal to a predetermined value, the wind sensor 12 feeds back wind power and/or wind direction information to the controller 30, and the controller 30 controls the rotary table 11 to rotate so that the photovoltaic panel 22 faces the direction of the wind power source. The wind sensors 12 are preferably arranged in plurality, the wind sensors 12 are uniformly arranged at the edge of the rotary workbench 11 and are used for measuring the wind strength of the rotary workbench 11 in multiple directions at the same time, and the information of the measured wind strength is based on the maximum value measured by the wind sensors 12, so that the timeliness of the photovoltaic power generation device for dealing with the windy weather and the accuracy of wind power judgment can be improved.

In the photovoltaic power generation apparatus, the photosensitive sensor 23 and the photovoltaic panel 22 in the photovoltaic module 20 are both fragile elements, and preferably, as shown in fig. 1 to 3, the photovoltaic module 20 includes a base plate 21, and the photovoltaic panel 22 and the photosensitive sensor 23 are mounted on the base plate 21, so that the base plate 21 serves as a mounting base for the photovoltaic module 20 on one hand, and the photovoltaic panel 22 and the photosensitive sensor 23 in the photovoltaic module 20 are not easily damaged on the other hand. This foundatin plate 21 can set up on swivel work head 11 for fixed inclination, or the contained angle alpha between foundatin plate 21 and the swivel work head 11 is preferred adjustable to make photovoltaic module 20 can be according to the light source angular adjustment gradient in different moments, different seasons, different areas, with the make full use of light source, improve photovoltaic power generation device's suitability. On the other hand, when a strong wind environment is encountered, the included angle α can be reduced to further reduce the wind area of the photovoltaic module 20. The photosensor 23 provided on the base plate 21 may be a sensor capable of measuring the direction of a light source, or the photosensor 23 may be a sensor for measuring only the intensity of light. The photosensitive sensor 23 is preferably a plurality of photosensitive sensors 23, and the plurality of photosensitive sensors 23 are arranged around the photovoltaic panel 22, so that the controller 30 can control the rotating table 11 to rotate and/or control the included angle α to increase or decrease according to the received information fed back by the plurality of photosensitive sensors 23, so as to enable the photovoltaic panel 22 to face the light source. For example, the light source brightness value sent by the photosensor 23 on one side of the photovoltaic panel 22 to the controller 30 is higher, the controller 30 sends an instruction to rotate the rotating table 11 and/or adjust the included angle α so as to make the light source brightness values measured by the photosensors 23 around the photovoltaic panel 22 substantially consistent, thereby automatically controlling the photovoltaic power generation apparatus to maintain the optimal solar energy utilization efficiency. Since the angle of the light source is usually changed slowly during the daily operation of the photovoltaic power generation device, the photosensitive sensor 23 is preferably configured to perform a periodic measurement operation on the direction of the light source, so as to save energy consumption and increase the service life of the photosensitive sensor 23, wherein the time interval between any two measurement operations of the photosensitive sensor 23 is at least 10-120 minutes, preferably 40-90 minutes.

The driving mechanism for adjusting the angle α between the base plate 21 and the rotary table 11 may be a rotary driving mechanism or a linear driving mechanism acting on one side of the base plate 21.

According to the photovoltaic power generation device of the present application, as the above-mentioned driving mechanism acting on the base plate 21 is a rotation driving mechanism, as shown in fig. 3, the swing mechanism 18 is provided on the rotation table 11, the base plate 21 is mounted on the swing mechanism 18, the swing mechanism 18 is electrically connected to the controller 30, and is configured to receive a command sent by the controller 30, so that the swing mechanism 18 drives the base plate 21 to swing to control the included angle α to increase or decrease. The swing mechanism 18 may be an actuator that directly performs rotational driving, such as a motor, a swing cylinder, or a hydraulic cylinder, or may be a device that converts linear driving into rotational driving by a linear actuator in combination with a conversion mechanism such as a rack and pinion.

As shown in fig. 1 and 2, the side of the base plate 21 facing the rotary table 11 includes a first connection end 13 and a second connection end 14, the first connection end 13 is hinged to the rotary table 11, a linear driver 15 is connected between the second connection end 14 and the rotary table 11, the linear driver 15 is electrically connected to the controller 30 and is used for receiving a command sent by the controller 30 to enable the second connection end 14 to approach or be away from the rotary table 11, so that the second connection end 14 of the base plate 21 is driven by the linear driver 15 to ascend or descend, and the base plate 21 can swing around the first connection end 13 hinged to the rotary table 11 to adjust the size of the included angle α. The linear driver 15 may be a hydraulic actuator, a pneumatic actuator, a direct drive motor, or the like.

The linear driver 15 can be installed in different ways according to different working conditions. As shown in fig. 2, both ends of the linear actuator 15 may be hinged to the second connection end 14 of the base plate 21 and the rotary table 11, respectively; alternatively, as shown in fig. 1, the second connecting end 14 preferably includes a sliding slot 16 or a sliding rail opened toward the first connecting end 13, and a sliding block 17 capable of sliding in the sliding slot 16 or the sliding rail, and one end of the linear actuator 15 is fixedly disposed on the rotary table 11, and the other end is hinged to the sliding block 17. According to the installation manner of the linear actuator 15 in the two embodiments, the linear actuator 15 only bears the load in the axial direction of the linear actuator during the process of driving the second connecting end 14 of the base plate 21 to ascend and descend, and the linear actuator 15 is prevented from being deformed or damaged due to large non-axial force. It is further preferable that the linear actuator 15 is provided with a guide mechanism such as a guide rod, and/or that a position where the linear actuator 15 is connected to the second connection end 14 and/or the rotary table 11 is provided with a damping mechanism such as a spring or a gas spring, thereby improving safety reliability of the linear actuator 15.

According to the photovoltaic power generation device of the preferred embodiment of the present application, under normal circumstances, the controller 30 of the photovoltaic power generation device controls the rotation of the rotary table 11 and the size of the included angle α between the photovoltaic module 20 and the rotary table 11 according to the light source information periodically fed back by the photosensitive sensor 23, so that the photovoltaic panel 22 utilizes the solar energy with the maximum efficiency as much as possible. In severe environments, such as windy weather, the photovoltaic power generation device can adjust the orientation of the rotary worktable or reduce the size of the included angle alpha according to the wind source information fed back by the wind volume sensor 12 so as to reduce the wind-receiving area of the photovoltaic power generation device; under the environment of ponding or snow are more, still can make swivel work head and photovoltaic module 20 keep away from the ground through lifting support 19. Therefore oranges and tangerines technical scheme of this application provides a photovoltaic power generation device that environmental suitability is stronger and solar energy utilization efficiency is higher.

The preferred embodiments of the present application have been described in detail above, but the present application is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present application within the technical idea of the present application, and these simple modifications all belong to the protection scope of the present application.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described in the present application.

In addition, any combination of the various embodiments of the present application is also possible, and the same should be considered as disclosed in the present application as long as it does not depart from the idea of the present application.

Claims

1. A photovoltaic power generation apparatus, characterized by comprising:

a base (10), the base (10) comprising a rotary table (11) that is automatically rotatable about a vertical central axis (I);

the photovoltaic assembly (20), the photovoltaic assembly (20) is obliquely arranged on the rotary worktable (11), the photovoltaic assembly (20) comprises a photovoltaic panel (22) for converting solar energy into electric energy and a photosensitive sensor (23) for sensing the direction of a light source;

a controller (30), wherein the controller (30) is used for receiving the light source information fed back by the photosensitive sensor (23) and controlling the rotating table (11) to rotate so as to enable the photovoltaic panel to face the light source direction.

2. Photovoltaic power plant according to claim 1, characterized in that the rotary table (11) is provided with an air volume sensor (12), and the air volume sensor (12) is used for measuring wind force and/or wind direction information and sending the information to the controller (30).

3. Photovoltaic power plant according to claim 2, characterized in that the air volume sensor (12) is provided with a predetermined value,

when the wind power measured by the wind sensor (12) is less than the preset value, the wind sensor (12) does not feed back information to the controller (30), and the controller (30) controls the rotary worktable (11) to rotate according to the information fed back by the photosensitive sensor (23) so that the photovoltaic panel (22) faces the light source direction;

when the wind power measured by the wind sensor (12) is greater than or equal to the preset value, the wind sensor (12) feeds back wind power and/or wind direction information to the controller (30), and the controller (30) controls the rotating workbench (11) to rotate so that the photovoltaic panel (22) faces the direction of the wind power source.

4. The photovoltaic power generation device according to claim 2, wherein the air volume sensor (12) is provided in plurality, and the plurality of air volume sensors (12) are uniformly arranged at the edge of the rotary table (11) and used for simultaneously measuring the wind intensity of the rotary table (11) in multiple directions.

5. Photovoltaic power plant according to claim 1, characterized in that the photovoltaic module (20) comprises a base plate (21), the angle α between the base plate (21) and the rotary table (11) being adjustable, the photovoltaic plate (22) and the photosensitive sensor (23) being mounted on the base plate (21).

6. The photovoltaic power generation device according to claim 5, characterized in that the side of the base plate (21) facing the rotary table (11) comprises a first connection end (13) and a second connection end (14), the first connection end (13) is hinged to the rotary table (11), a linear driver (15) is connected between the second connection end (14) and the rotary table (11), the linear driver (15) is electrically connected with the controller (30) and is used for receiving a command sent by the controller (30) to enable the second connection end (14) to approach or move away from the rotary table (11); or

Be provided with swing mechanism (18) on swivel work head (11), foundatin plate (21) install in on swing mechanism (18), this swing mechanism (18) with controller (30) electricity is connected, is used for receiving the instruction that controller (30) sent is in order to control contained angle alpha increases or reduces.

7. Photovoltaic power plant according to claim 6, characterized in that said linear actuator (15) is hinged at its two ends to said second connection end (14) and to said rotary table (11), respectively; or

The second connecting end (14) comprises a sliding groove (16) which is formed towards the first connecting end (13) and a sliding block (17) which can slide in the sliding groove (16), one end of the linear driver (15) is fixedly arranged on the rotary workbench (11), and the other end of the linear driver is hinged to the sliding block (17).

8. Photovoltaic power plant according to claim 5, characterized in that said photosensitive sensor (23) is in plurality, said plurality of photosensitive sensors (23) being arranged around said photovoltaic panel (22),

the controller (30) controls the rotating workbench (11) to rotate and/or controls the included angle alpha to increase or decrease according to the received information fed back by the photosensitive sensors (23), so that the photovoltaic panel (22) faces the direction of the light source.

9. Photovoltaic power plant according to claim 8, characterized in that the light sensitive sensor (23) is arranged to perform a periodic measurement of the direction of the light source, the time interval between any two measurement operations of the light sensitive sensor (23) being at least 10-120 minutes.

10. Photovoltaic power plant according to claim 1, characterized in that the base (10) comprises a lifting bracket (19), the rotary table (11) being rotatably arranged on the lifting bracket (19).