Solar panel automatic rotation method, system and equipment

Abstract

The invention provides a solar panel automatic rotation method, system and equipment, and the method comprises the steps: S1, building a coordinate system on a solar panel, enabling each coordinate point in the coordinate system to be (m, n), and collecting a data illumination value and a charging current value point by point, enabling m to be the rotation amount of the solar panel in the horizontal direction, and enabling n to be the rotation amount of the solar panel in the vertical direction; s2, determining a maximum illumination intensity coordinate point (M, N), controlling the solar panel to rotate to the maximum illumination intensity coordinate point (M, N), and keeping the time T; and S3, dynamically adjusting the sampling point density and the retention time T according to the collected data. According to the design scheme, the density of the sampling points and the standing duration can be dynamically adjusted according to the established light intensity value and charging current value set, so that reasonable battery power consumption is guaranteed, and the optimal energy utilization rate of the system is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of solar panel tracking control, and in particular to a method, system and device for automatically rotating a solar panel. Background Art

[0002] In the shift of the world's energy structure, solar power generation occupies a prominent position. The total annual energy consumption of the world is only equivalent to the energy that the sun irradiates to the earth's surface in 40 minutes. Solar energy is available everywhere, there is no need for long-distance transmission, no noise, and no pollution to the environment. Due to these unique advantages, solar power generation is rapidly rising as an emerging industry. Solar cell power generation, also known as photovoltaic power generation. Solar cells have been introduced since 1954. After 50 years of development, a new photovoltaic science and photovoltaic engineering have been formed. Photovoltaic technology has the characteristics of long service life, safety and reliability, easy operation, simple maintenance, not easy to damage, and suitable for unmanned management. It is an ideal alternative energy source.

[0003] my country has abundant sunshine resources and abundant solar energy. It is estimated that the solar radiation energy received by the land surface of my country is about 5×1019 kilojoules per year, which is equivalent to about 170 billion tons of standard coal. For more than 50 years, China has been studying photovoltaic technology. Now, many technicians are focusing on studying and solving the problems of high efficiency, low cost, stability and large capacity of solar cells. The application and development of photovoltaic technology has a huge potential market in China.

[0004] In the process of solar cell power generation, the key to improving the utilization rate of solar energy is to achieve fully automatic solar tracking. At present, the azimuth-pitch dual-axis tracking system is mostly used to track the sun. The so-called dual-axis tracking system means that in the horizontal coordinate system, the axis perpendicular to the ground is the azimuth axis, and the axis parallel to the horizontal plane is the pitch axis. According to the sun's position calculated by the program, two motors are controlled to rotate around the azimuth axis and the pitch axis respectively, so that the normal direction of the solar panel points to the sun, thereby achieving the purpose of tracking the sun. However, after selecting the horizontal coordinate system, the change law of the sun's azimuth and pitch angles is relatively complicated, and complex calculations are required to determine the sun's position. In addition, the azimuth and pitch angles change greatly throughout the day and need to be adjusted at all times, resulting in energy waste.

[0005] However, the existing technical means still have the following technical problems:

[0006] 1. Low efficiency of solar energy collection: The orientation of most solar panels is determined by the user's installation location. Since the sunlight changes 24 hours a day and throughout the year, the duration of direct sunlight hitting the solar panels is limited, resulting in the failure to maximize the use of sunlight during most periods of time.

[0007] 2. Inaccurate detection of the best illumination point: Some product designs use the voltage generated by light irradiating the solar panel to determine the maximum illumination point. The light intensity area determined by this design is relatively rough, and the solar panel has a maximum voltage output limit. After the light critical value of the maximum voltage is exceeded, the light enhancement voltage will hardly increase;

[0008] 3. The rotation adjustment accuracy is not high: using single motor control or relying only on structural movement, the adjusted position cannot reach the optimal lighting point position. Summary of the invention

[0009] In order to solve the above technical problems, in a first aspect of the present application, a method for automatically rotating a solar panel is proposed, comprising:

[0010] S1. Establish a coordinate system on the solar panel. Each coordinate point in the coordinate system is (m, n) and collect data illumination value and charging current value point by point, where m is the horizontal rotation amount of the solar panel and n is the vertical rotation amount of the solar panel;

[0011] S2. Determine the maximum light intensity coordinate point (M, N), control the solar panel to rotate to the maximum light intensity coordinate point (M, N) and maintain it for a period of T.

[0012] Specifically, the illumination value and charging current value of each coordinate point.

[0013] Specifically, S101, establishing an initial coordinate system on the solar panel, where each coordinate point in the coordinate system is (m, n);

[0014] S102, perform self-check, obtain data of each coordinate point, and transmit the data to the control terminal.

[0015] Specifically, S201: the control terminal establishes an illumination value set and a battery charging current value set according to the data, thereby determining a maximum illumination intensity coordinate point (M, N);

[0016] S202: Obtain the maximum value M in the illumination value set by weighted average method max Point, M max The calculation method is: M = 40% A0 + 60% (A1 + A2 + ... + A n ) / n; the maximum current value I in the battery charging current value set is obtained by comparing the fuel gauge chip max , through M max and I max Determine the coordinate point of maximum light intensity (M, N), where A0 is the light intensity information collected by the photosensor at the center of the solar panel, A1, A2...A n They are light intensity information collected by photosensors located outside the center point of the solar panel;

[0017] S203, controlling the solar panel to rotate to the maximum light intensity coordinate point (M, N) and maintaining the time period T.

[0018] The method further includes: S3, dynamically adjusting the sampling point density and the holding time T according to the collected data.

[0019] The position of maximum light intensity is screened out by combining the photosensor value and the current value, and the solar panel is more accurately positioned at the position of maximum light intensity through horizontal and vertical adjustments. In addition, the battery loss can be minimized by dynamically adjusting the sampling point density and the holding time T.

[0020] In the second aspect of the present application, a solar panel automatic rotation system is proposed, comprising: a solar panel, a battery, a motor regulation system, a control system and a photosensor system; the motor regulation system is configured to adjust the posture of the solar panel in response to the control system command; the battery supplies power to the control system; the photosensor system is configured to collect the illumination value of each coordinate point; and the solar panel is configured to charge the battery.

[0021] Preferably, the motor adjustment system comprises: a first rotating unit and a second rotating unit; the first rotating unit is configured to control the rotation amount of the solar panel in a first direction; the second rotating unit is configured to control the rotation amount of the solar panel in a second direction.

[0022] Compared with the existing solar panel adjustment system, this technical solution can achieve more precise solar panel posture adjustment through bidirectional adjustment.

[0023] Preferably, the control system is also configured to collect charging current values ​​at each coordinate point when the solar panel charges the battery.

[0024] In the third aspect of the present application, a solar panel automatic rotation device is proposed, including: a solar panel, a rotating motor support rod and a rotating base; one end of the support rod is connected to the solar panel through a rotating motor, and the other end of the support rod is rotatably connected to the rotating base; the rotating motor is electrically connected to the control chip, and the rotating motor drives the solar panel to rotate in the vertical direction; a number of photosensitive sensors are arranged on the solar panel; the rotating base is integrated with a control chip and a power supply battery; the power supply battery is respectively connected to the solar panel and the control chip.

[0025] Preferably, the rotating base includes: a supporting table and a rotating platform; the rotating platform is rotatably arranged above the supporting table, and the rotating platform can drive the supporting rod to rotate horizontally.

[0026] Compared with the prior art, the beneficial results of this application are:

[0027] 1. High precision of the control system: realizes coordinate control in both horizontal and vertical directions, so that the solar panels can be rotated to a position closer to the maximum power point of the sun;

[0028] 2. Multi-point acquisition system: It can ensure more accurate data. Through the integration and calculation of data by the MCU system, it can accurately locate the maximum power position;

[0029] 3. Double data set sampling: Provide more comprehensive model data to the MCU system to achieve double data accuracy guarantee;

[0030] 4. Dynamic adjustment of MCU sampling: Dynamically increase or decrease the sampling point density and static duration, which can achieve maximum accuracy in sufficient sunlight and minimum battery energy consumption in weak light. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings are included to provide a further understanding of the embodiments and are incorporated into and constitute a part of this specification. The accompanying drawings illustrate the embodiments and are used together with the description to explain the principles of the present application. It will be easy to recognize other embodiments and many expected advantages of the embodiments because they become better understood by reference to the following detailed description. The elements of the drawings are not necessarily to scale with each other. The same reference numerals refer to corresponding similar parts.

[0032] Figure 1 is a flow chart of a method for automatically rotating a solar panel according to an embodiment of the present application;

[0033] Figure 2 is a flow chart of S1 in a method for automatic rotation of a solar panel according to an embodiment of the present application;

[0034] Figure 3 is a flow chart of S2 in a method for automatic rotation of a solar panel according to an embodiment of the present application;

[0035] Figure 4 is a principle block diagram of a solar panel automatic rotation system according to an embodiment of the present application;

[0036] Figure 5 It is a structural schematic diagram of a solar panel automatic rotation device according to an embodiment of the present application.

[0037] Description of the accompanying drawings: 1. Solar panel; 2. Support rod; 3. Rotating base; 3a. Support table; 3b. Rotating platform; 4. Photosensitive sensor. DETAILED DESCRIPTION

[0038] In the following detailed description, reference is made to the accompanying drawings, which form a part of the detailed description and are shown by illustrative specific embodiments in which the present application can be practiced. To this end, directional terms, such as "top", "bottom", "left", "right", "up", "down", etc., are used with reference to the orientation of the figures described. Because the components of the embodiments can be positioned in several different orientations, directional terms are used for the purpose of illustration and are by no means limiting. It should be understood that other embodiments may be utilized or logical changes may be made without departing from the scope of the present application. Therefore, the following detailed description should not be adopted in a limiting sense, and the scope of the present application is defined by the appended claims.

[0039] Figure 1 is a flow chart of a method for automatically rotating a solar panel according to an embodiment of the present application. Figure 1 As shown, a method for automatically rotating a solar panel includes:

[0040] S1. Establish a coordinate system on the solar panel. Each coordinate point in the coordinate system is (m, n) and collect data illumination value and charging current value point by point, where m is the horizontal rotation amount of the solar panel and n is the vertical rotation amount of the solar panel;

[0041] S2. Determine the maximum light intensity coordinate point (M, N), control the solar panel to rotate to the maximum light intensity coordinate point (M, N) and maintain it for a period of T.

[0042] S3. Dynamically adjust the sampling point density and retention time T according to the collected data.

[0043] The collected data include: the illumination value and charging current value of each coordinate point.

[0044] In addition, for step S3, the decision basis for dynamically adjusting the sampling point density and the holding time T is: the current solar sunshine conditions. When the sunshine conditions are sufficient, the dynamic scanning points and the holding time T are increased, otherwise they are reduced.

[0045] Figure 2 This is a flow chart of S1 in a method for automatic rotation of a solar panel according to an embodiment of the present application, such as Figure 2 As shown, step S1 specifically also includes:

[0046] S101, establishing an initial coordinate system on the solar panel, where each coordinate point in the coordinate system is (m, n);

[0047] S102, perform self-check, obtain data of each coordinate point, and transmit the data to the control terminal.

[0048] Figure 3 is a flow chart of S2 in a method for automatic rotation of a solar panel according to an embodiment of the present application, such as Figure 3 As shown, step S2 specifically also includes:

[0049] S201: The control terminal establishes an illumination value set and a battery charging current value set according to the data, thereby determining a maximum illumination intensity coordinate point (M, N);

[0050] S202, obtain the maximum value Mmax point in the illumination value set by weighted average method, and the calculation method of Mmax is: M=40%A0+60%(A1+A2+...+An) / n; obtain the maximum current value Imax in the battery charging current value set by comparison with the fuel meter chip, and determine the maximum light intensity coordinate point (M, N) by Mmax and Imax, where A0 is the light intensity information collected by the photosensor located at the center point of the solar panel, and A1, A2...An are the light intensity information collected by the photosensors located outside the center point of the solar panel respectively;

[0051] S203, controlling the solar panel to rotate to the maximum light intensity coordinate point (M, N) and maintaining the time period T.

[0052] Figure 4 is a principle block diagram of a solar panel automatic rotation system according to an embodiment of the present application, such as Figure 4 As shown, it includes: solar panels, batteries, motor regulation systems, control systems and photosensor systems; the motor regulation system is configured to adjust the posture of the solar panels in response to control system instructions; the battery supplies power to the control system; the photosensor system is configured to collect the illumination value of each coordinate point; and the solar panels are configured to charge the batteries.

[0053] The motor adjustment system includes: a horizontal rotation unit and a vertical rotation unit; the horizontal rotation unit is configured to control the horizontal rotation amount of the solar panel; the vertical rotation unit is configured to control the vertical rotation amount of the solar panel.

[0054] Furthermore, the control system is further configured to collect charging current values ​​at each coordinate point when the solar panel charges the battery.

[0055] The workflow of the system is as follows:

[0056] ① The motor regulation system drives the solar panel to move and performs self-detection according to the (m, n) coordinates;

[0057] ② During the self-detection process of the solar panel, the photosensitive sensor system collects the light intensity data of each coordinate point and uploads it to the control system;

[0058] ③The solar panel charges the battery during the self-test process;

[0059] ④ When the solar panel is charging the battery, the control system collects charging current data at different coordinate points;

[0060] ⑤The control system integrates the data obtained in ② and ③ and rotates the solar panel to point M through the motor adjustment system;

[0061] ⑥The motor regulation system controls the solar panel to remain at point M for N time.

[0062] Figure 5 is a schematic structural diagram of a solar panel automatic rotation device according to an embodiment of the present application, such as Figure 5 The figure includes: a solar panel 1, a rotating motor, a support rod 2 and a rotating base 3; one end of the support rod 2 is connected to the solar panel 1 through the rotating motor, and the other end of the support rod 2 is rotatably connected to the rotating base 3; the rotating motor is electrically connected to the control chip, and the rotating motor drives the solar panel 1 to rotate in the vertical direction; a photosensitive sensor 4 is provided on the solar panel 1; a control chip and a power supply battery are integrated inside the rotating base 3; the power supply battery is respectively connected to the solar panel 1 and the control chip. It should be noted that the rotating motor is not in Figure 5 Shown in.

[0063] More specifically, the rotating base 3 includes: a supporting platform 3a and a rotating platform 3b; the rotating platform 3b is rotatably disposed above the supporting platform 3a, and the rotating platform 3b can drive the supporting rod 2 to rotate horizontally.

[0064] In addition, since different practical scenarios have different sunlight conditions, for scenarios with sufficient sunlight conditions, in addition to setting a photosensor 4 at the center point of the solar panel 1, more dense photosensors 4 can be set around the solar panel 1. By increasing the number of photosensors 4, more light intensity information can be obtained, thereby obtaining a more accurate maximum light intensity coordinate point.

[0065] Obviously, those skilled in the art can make various modifications and changes to the embodiments of the present application without departing from the spirit and scope of the present application. In this way, if these modifications and changes are within the scope of the claims of the present application and their equivalents, the present application is also intended to cover these modifications and changes. The word "comprising" does not exclude the presence of other elements or steps not listed in the claims. The simple fact that certain measures are recorded in mutually different dependent claims does not indicate that the combination of these measures cannot be used to profit. Any figure mark in the claims should not be considered to limit the scope.

Claims

1. A method for automatically rotating a solar panel, characterized in that: include: S1. Establish a coordinate system on the solar panel. Each coordinate point in the coordinate system is (m, n) and collect data illumination value and charging current value point by point, where m is the horizontal rotation amount of the solar panel and n is the vertical rotation amount of the solar panel; S2. Determine the maximum light intensity coordinate point (M, N), control the solar panel to rotate to the maximum light intensity coordinate point (M, N) and maintain it for a period of T.

2. A solar panel automatic rotation method according to claim 1, characterized in that: The data includes: illumination value and charging current value of each coordinate point.

3. A solar panel automatic rotation method according to claim 2, characterized in that: The S1 is specifically: S101, establishing an initial coordinate system on the solar panel, where each coordinate point in the coordinate system is (m, n); S102, perform self-check, obtain data of each coordinate point, and transmit the data to the control terminal.

4. A solar panel automatic rotation method according to claim 2, characterized in that: The S2 is specifically: S201: The control terminal establishes an illumination value set and a battery charging current value set according to the data; S202: Obtain the maximum value M in the illumination value set by weighted average method max Point, M max The calculation method is: M = 40% A0 + 60% (A1 + A2 + ... + A n ) / n; the maximum current value I in the battery charging current value set is obtained by comparing the fuel gauge chip max , through M max and I max Determine the coordinate point of maximum light intensity (M, N), where A0 is the light intensity information collected by the photosensor at the center of the solar panel, A1, A2...A n They are light intensity information collected by photosensors located outside the center point of the solar panel; S203, controlling the solar panel to rotate to the maximum light intensity coordinate point (M, N) and maintaining the time period T.

5. A solar panel automatic rotation method according to claim 1, characterized in that: Also includes: S3. Dynamically adjust the sampling point density and retention time T according to the collected data.

6. A solar panel automatic rotation system, using the method according to any one of claims 1 to 5, characterized in that: include: Solar panels, batteries, motor regulation systems, control systems and light-sensitive sensor systems; the motor regulation system is configured to adjust the posture of the solar panels in response to the control system instructions; The battery supplies power to the control system; the photosensor system is configured to collect the illumination value of each coordinate point; and the solar panel is configured to charge the battery.

7. The solar panel automatic rotation system according to claim 6, characterized in that: The motor adjustment system includes: a first rotating unit and a second rotating unit; the first rotating unit is configured to control the rotation amount of the solar panel in a first direction; the second rotating unit is configured to control the rotation amount of the solar panel in a second direction.

8. The solar panel automatic rotation system according to claim 6, characterized in that: The control system is also configured to collect charging current values ​​at each coordinate point when the solar panel charges the battery.

9. A solar panel automatic rotation device, using the method according to any one of claims 1 to 5, characterized in that: include: Solar panels, rotating motors, support poles and rotating base; One end of the support rod is connected to the solar panel through the rotating motor, and the other end of the support rod is rotatably connected to the rotating base; the rotating motor is electrically connected to the control chip, and the rotating motor drives the solar panel to rotate in the vertical direction; a photosensor is arranged on the solar panel; a control chip and a power supply battery are integrated inside the rotating base; the power supply battery is respectively connected to the solar panel and the control chip.

10. The solar panel automatic rotation device according to claim 9, characterized in that: The rotating base comprises: a supporting platform and a rotating platform; the rotating platform is rotatably arranged above the supporting platform, and the rotating platform can drive the supporting rod to rotate horizontally.

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