CN209805748U - Novel biax photovoltaic tracker - Google Patents

Abstract

The utility model relates to the technical field of sun tracking devices, and provides a novel dual-axis photovoltaic tracker, which includes a base and a dual-axis tracking mechanism; the base includes a fixed iron plate and a fixed gear, and the fixed gear is welded above the fixed iron plate; the dual-axis tracking mechanism Among them, the four sides of the photovoltaic panel fixing plate are provided with photoresistor mounting blocks, and each photoresistor is arranged above one photoresistor mounting block; the left side of the photovoltaic panel fixing plate is connected to the left frame through the first connecting shaft, The rotor of the upper stepping motor is connected with the first connecting shaft or the second connecting shaft; the fixed gear is connected with the lower frame through the third connecting shaft at the top; the lower stepping motor is installed on the lower frame, and the movable gear is fixed on the lower stepping motor On the rotor, the moving gear meshes with the fixed gear; the photoresistor, the upper stepping motor and the lower stepping motor are all electrically connected with the controller. The utility model can adjust the pitch angle and the azimuth angle of the photovoltaic panel in real time, improve the efficiency of photovoltaic power generation, and is suitable for small photovoltaic power stations.

Description

A Novel Dual-Axis Photovoltaic Tracker

technical field

The utility model relates to the technical field of sun tracking devices, in particular to a novel dual-axis photovoltaic tracker.

Background technique

Vigorously developing renewable energy is one of the effective ways to deal with the fossil energy crisis and environmental problems. Among them, photovoltaic power generation has developed rapidly in recent years due to its advantages of abundant resources and little influence by geographical location. The output of photovoltaic power generation is closely related to the intensity of sunlight. Common ground photovoltaic systems generally use concrete as the installation foundation for solar photovoltaic support. However, due to the rotation and revolution of the earth, compared with a solar photovoltaic power generation system at a fixed location, the In the four seasons of summer, autumn and winter, the sun rises and sets every day, and the angle of the sun's light changes all the time. This effectively ensures that the photovoltaic panels can always face the sun, and the power generation efficiency can reach the best. As a result, the tracking photovoltaic bracket came into being, which can adjust the pitch angle and azimuth angle of the photovoltaic panel in real time, so that the photovoltaic panel is always facing the sun, ensuring that the photovoltaic panel can receive solar radiation energy to the maximum extent.

However, the existing photovoltaic trackers are mostly oriented to large-scale integrated photovoltaic power plants, and there are few studies on dual-axis photovoltaic trackers for small photovoltaic power plants and other small photovoltaic drive equipment.

Utility model content

Aiming at the problems existing in the prior art, the utility model provides a new dual-axis photovoltaic tracker, which can adjust the pitch angle and azimuth angle of the photovoltaic panel in real time, so that the photovoltaic panel faces the sun at all times, and ensures that the photovoltaic panel can receive solar radiation energy to the maximum extent. , improve the efficiency of photovoltaic power generation.

The technical scheme of the utility model is:

A novel dual-axis photovoltaic tracker is characterized in that it includes a base and a dual-axis tracking mechanism;

The base includes a fixed iron plate and a fixed gear, and the fixed gear is welded above the fixed iron plate;

The two-axis tracking mechanism includes a photovoltaic panel fixing plate, a photoresistor, a photoresistor mounting block, a first connecting shaft, a second connecting shaft, a third connecting shaft, a fixed frame, an upper stepping motor, a lower stepping motor, and a moving gear , controller;

The photovoltaic panel fixing plate is used to install the photovoltaic panel, and the four sides of the photovoltaic panel fixing plate are provided with photoresistor mounting blocks. There are two pairs of photoresistors, and each photoresistor is arranged on a photoresistor the top of the mounting block;

The fixed frame is a concave shape, and the fixed frame includes a left frame, a right frame, and a lower frame. The left side of the photovoltaic panel fixing plate is connected to the left frame through the first connecting shaft, and the photovoltaic panel The right side of the plate is connected with the right frame through the second connecting shaft, the upper stepping motor is installed on the left frame or the right frame, and the rotor of the upper stepping motor is connected with the first connecting shaft or the second connecting shaft connect;

The fixed gear is connected with the lower frame through the third connecting shaft at the top; the lower stepping motor is installed on the lower frame, and the movable gear is fixed on the rotor of the lower stepping motor, and the movable gear and the fixed gear Engage;

The photoresistor, the upper stepping motor and the lower stepping motor are all electrically connected with the controller.

The beneficial effects of the utility model are:

(1) The utility model uses two pairs of photoresistors to respectively detect the horizontal and vertical light intensity received by the photovoltaic panel, and obtains the horizontal and vertical light intensity difference through the controller, thereby controlling the rotation of the upper stepping motor and the lower stepping motor, and adjusting in real time The pitch and azimuth angles of the photovoltaic panels make the photovoltaic panels face the sun at all times, ensuring that the photovoltaic panels receive maximum solar radiation energy and greatly improve the efficiency of photovoltaic power generation.

(2) The utility model has the advantages of simple structure, low cost, high control precision, good real-time performance, no manual intervention, and can be applied to small photovoltaic power stations and other small photovoltaic drive equipment.

Description of drawings

Fig. 1 is a schematic structural diagram of a new dual-axis photovoltaic tracker of the present invention.

Fig. 2 is a schematic diagram of the transmission structure of the new dual-axis photovoltaic tracker of the utility model to control the pitch angle of the photovoltaic panel.

Fig. 3 is a schematic diagram of the transmission structure of the new dual-axis photovoltaic tracker of the utility model for controlling the azimuth angle of the photovoltaic panel.

In the figure, 1 - upper stepping motor, 2 - photovoltaic panel fixing plate, 3 - photovoltaic panel, 4 - photoresistor, 5-1 - first connecting shaft, 5-2 - second connecting shaft, 5-3 - second connecting shaft Three connecting rotating shafts, 6-fixed frame, 7-lower stepping motor, 8-fixed iron plate, 9-moving gear, 10-fixed gear, 11-photoresistor mounting block.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

As shown in FIG. 1 , it is a schematic structural diagram of a new dual-axis photovoltaic tracker of the present invention. The novel dual-axis photovoltaic tracker of the present utility model is characterized in that it includes a base and a dual-axis tracking mechanism;

The base includes a fixed iron plate 8 and a fixed gear 10, and the fixed gear 10 is welded above the fixed iron plate 8;

The two-axis tracking mechanism includes a photovoltaic panel fixing plate 2, a photoresistor 4, a photoresistor mounting block 11, a first connecting shaft 5-1, a second connecting shaft 5-2, a third connecting shaft 5-3, and a fixed frame 6 , Upper stepper motor 1, lower stepper motor 7, moving gear 9, controller;

The photovoltaic panel fixing plate 2 is used to install the photovoltaic panel 3, and the four sides of the photovoltaic panel fixing plate 2 are provided with photoresistor mounting blocks 11, and there are two pairs of the photoresistors 4, each of the photoresistors 4 are all arranged above a photoresistor mounting block 11;

The fixed frame 6 is a concave shape, and the fixed frame 6 includes a left frame, a right frame, and a lower frame, and the left side of the photovoltaic panel fixing plate 2 is connected to the left frame through the first connecting shaft 5-1 , the right side of the photovoltaic panel fixing plate 2 is connected to the right frame through the second connecting shaft 5-2, the upper stepper motor 1 is installed on the left frame or the right frame, and the upper stepper motor 1 The rotor is connected with the first connecting shaft 5-1 or the second connecting shaft 5-2;

The fixed gear 10 is connected with the lower frame through the third connection shaft 5-3 above; the lower stepper motor 7 is installed on the lower frame, and the movable gear 9 is fixed on the rotor of the lower stepper motor 7, The movable gear 9 meshes with the fixed gear 10;

The photoresistor 4, the upper stepping motor 1 and the lower stepping motor 7 are all electrically connected to the controller.

In this embodiment, the upper stepping motor 1 is installed on the left frame, and the rotor of the upper stepping motor 1 is connected to the first connecting shaft 5-1. The model of the controller is TI DSP TMS320F28335. As shown in Fig. 2 and Fig. 3, they are schematic diagrams of the transmission structure of the utility model dual-axis photovoltaic tracker controlling the pitch angle and azimuth angle of the photovoltaic panel. The photovoltaic panel fixing plate 2 is driven by the upper stepping motor 1 and rotates freely up and down, and the controller sends a control command for the rotation angle to the upper stepping motor 1; the photovoltaic panel fixing plate 2 is driven by the lower stepping motor 7 and freely rotates left and right, and the control The device sends the control command of the rotation angle to the lower stepper motor 7.

The working principle of the present utility model is illustrated below in conjunction with accompanying drawing:

In engineering applications, when there is no light at night, the controller controls the upper stepper motor 1 and the lower stepper motor 7 to adjust the pitch angle and azimuth angle of the photovoltaic panel 3 to the initial position. When there is light, the upper and lower pair of photoresistors 4 detect the longitudinal light intensity received by the photovoltaic panel 3, and transmit the longitudinal light intensity data to the controller, and the controller processes the longitudinal light intensity data to obtain the light intensity of the photovoltaic panel 3 up and down According to the deviation, the upper stepper motor 1 sends a control command for the rotation angle, controls the photovoltaic panel fixing plate 2 to drive the photovoltaic panel 3 to rotate up and down, thereby adjusting the pitch angle of the photovoltaic panel 3, so that the photovoltaic panel 3 faces the sun in the longitudinal direction, and this When the upper and lower light intensity deviation is 0, the controller fixes the deflection angle of the upper stepping motor 1. A pair of left and right photoresistors 4 detect the horizontal light intensity received by the photovoltaic panel 3, and transmit the data of the horizontal light intensity to the controller. The lower stepper motor 7 issues a control command for the rotation angle, controls the photovoltaic panel fixing plate 2 to drive the photovoltaic panel 3 to rotate left and right, thereby adjusting the azimuth angle of the photovoltaic panel 3, so that the photovoltaic panel 3 faces the sun in the horizontal direction, and the left and right light intensity deviations at this time is 0, the controller fixes the deflection angle of the stepping motor 7 . In this way, the tracking of the sun by the photovoltaic panel 3 is realized, so as to improve the conversion efficiency of light energy.

Apparently, the above-mentioned embodiments are only some of the embodiments of the present invention, but not all of them. The above-mentioned embodiments are only used to explain the utility model, and do not constitute a limitation to the protection scope of the utility model. Based on the above-mentioned embodiments, all other embodiments obtained by those skilled in the art without creative work, that is, all modifications, equivalent replacements and improvements made within the spirit and principles of this application are all Fall within the scope of protection required by the utility model.

Claims (1)

1. The utility model provides a novel biax photovoltaic tracker which characterized in that: comprises a base and a double-shaft tracking mechanism;

The base comprises a fixed iron plate and a fixed gear, and the fixed gear is welded above the fixed iron plate;

the double-shaft tracking mechanism comprises a photovoltaic panel fixing plate, a photoresistor mounting block, a first connecting rotating shaft, a second connecting rotating shaft, a third connecting rotating shaft, a fixing frame, an upper stepping motor, a lower stepping motor, a moving gear and a controller;

The photovoltaic panel fixing plate is used for mounting a photovoltaic panel, four side surfaces of the photovoltaic panel fixing plate are respectively provided with a photoresistor mounting block, two pairs of photoresistors are arranged, and each photoresistor is arranged above one photoresistor mounting block;

The fixed frame is in a concave shape and comprises a left side frame, a right side frame and a lower side frame, the left side of the photovoltaic panel fixed plate is connected with the left side frame through a first connecting rotating shaft, the right side of the photovoltaic panel fixed plate is connected with the right side frame through a second connecting rotating shaft, the upper stepping motor is installed on the left side frame or the right side frame, and a rotor of the upper stepping motor is connected with the first connecting rotating shaft or the second connecting rotating shaft;

the fixed gear is connected with the lower frame through a third connecting rotating shaft above the fixed gear; the lower stepping motor is arranged on the lower frame, the moving gear is fixed on a rotor of the lower stepping motor, and the moving gear is meshed with the fixed gear;

The photoresistor, the upper stepping motor and the lower stepping motor are all electrically connected with the controller.