Photovoltaic energy storage device and use method

Abstract

The invention relates to the technical field of photovoltaic energy storage, and discloses a photovoltaic energy storage device and a use method.The photovoltaic energy storage device comprises a base, a servo motor is installed in the middle of the base, a mounting plate is connected to the rotating end of the servo motor, a photovoltaic assembly is movably installed on the mounting plate, and an air cylinder is hinged to the bottom of the photovoltaic assembly; the bottom of the cylinder is mounted on the mounting plate; a signal receiver, a PLC and an inverter are installed on the base, a flywheel battery is installed in the base, the signal receiver is used for receiving external signals and electrically connected with the PLC, the PLC is electrically connected with the air cylinder and the servo motor, and the inverter is used for converting light energy received in the photovoltaic assembly into electric energy in the flywheel battery. According to the invention, through the arrangement of the cylinder and the PLC, the cylinder can be controlled by the PLC to stretch out and draw back so as to adapt to solar elevation angles in different time periods, so that the whole photovoltaic module can better receive light energy, and the light energy can be better converted into electric energy.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic energy storage and discloses a photovoltaic energy storage device and a use method thereof. Background Art

[0002] Solar energy has become the focus of attention due to its unique advantages. After the 1980s, the types of solar cells have continued to increase, the scope of application has become increasingly broad, and the market size has gradually expanded. Photovoltaic power generation is a technology that uses the photovoltaic effect of the semiconductor interface to directly convert light energy into electrical energy. It is mainly composed of three parts: solar panels (modules), controllers and inverters, and the main components are composed of electronic components. After solar cells are connected in series and packaged for protection, they can form a large-area solar cell module, which is then combined with power controllers and other components to form a photovoltaic power generation device.

[0003] Photovoltaic power station refers to a photovoltaic power generation system that uses solar energy and special materials such as crystalline silicon panels, inverters and other electronic components to connect to the power grid and transmit electricity to the power grid. Photovoltaic power stations are the green power development energy projects that the country encourages the most. Photovoltaic energy storage equipment is an important part of photovoltaic power stations. The angles of photovoltaic energy storage panels in photovoltaic energy storage equipment in the existing technology are mostly fixed and cannot be deflected according to the movement of the sun, resulting in a great waste of solar energy and reducing the power generation effect of photovoltaic energy storage equipment. Summary of the invention

[0004] In view of the defects in the prior art, the purpose of the present invention is to provide a photovoltaic energy storage device and a method of use, which can adjust the photovoltaic energy storage equipment according to the position of the solar altitude angle to better receive light energy with high light energy receiving efficiency.

[0005] In order to solve the above technical problems, the present invention proposes the following technical solutions:

[0006] A photovoltaic energy storage device comprises a base, a servo motor is installed in the middle of the base, a rotating end of the servo motor is connected to a mounting plate, a photovoltaic module is movably mounted on the mounting plate, a cylinder is hinged at the bottom of the photovoltaic module, and the bottom of the cylinder is mounted on the mounting plate;

[0007] A signal receiver, a PLC controller and an inverter are installed on the base, a flywheel battery is installed inside the base, the signal receiver is used to receive external signals, the signal receiver is electrically connected to the PLC controller, the PLC controller is electrically connected to the cylinder and the servo motor, and the inverter is used to convert the light energy received in the photovoltaic module into electrical energy in the flywheel battery;

[0008] The PLC controller stores illumination information, which includes the solar altitude angle and the solar azimuth angle.

[0009] Furthermore, the latitude of the location of the base and the solar declination angle are recorded in the PLC controller, and the PLC controller obtains the hour angle in real time.

[0010] Furthermore, an angle measuring instrument is included. The angle measuring instrument uses the mounting plate as a horizontal plane and the photovoltaic module as an inclined plane to measure the inclination angle of the photovoltaic module. The data measured by the angle measuring instrument is recorded in the PLC controller.

[0011] Furthermore, an annular groove is provided on the base, a support rod is slidably provided on the annular groove, and the top of the support rod is fixedly connected to the mounting plate.

[0012] Furthermore, the photovoltaic assembly includes a photovoltaic panel and a photovoltaic frame, the photovoltaic panel is installed in the photovoltaic frame, a slide groove is provided at the bottom of the photovoltaic frame, a hinge is slidably provided on the slide groove, the telescopic end of the cylinder is hinged to the hinge, connecting plates are installed at both ends of the mounting plate, and the ends of the photovoltaic frame are hinged in the connecting plates.

[0013] Furthermore, a connecting piece and a snap-fit ​​piece are provided on the side of the base, and two adjacent bases are connected by the connecting piece and the snap-fit ​​piece.

[0014] The present invention also includes a method for using a photovoltaic energy storage device, the method comprising the following steps:

[0015] S1, obtain the latitude, solar declination angle and hour angle of the photovoltaic energy storage device, transmit them to the PLC controller 3, and control the servo motor to open and close through the PLC controller, so that the photovoltaic module faces the sun throughout the process;

[0016] S2, according to the latitude, solar declination angle and hour angle, calculate the solar altitude angle and solar azimuth angle, and thus calculate the optimal tilt angle of the photovoltaic module;

[0017] S3, the PLC controller controls the cylinder to rise and fall, adjusts the tilt angle of the photovoltaic module, and the angle measuring instrument measures the actual tilt angle of the photovoltaic module and transmits instructions to the PLC controller until the photovoltaic module tilts to the optimal tilt angle of the photovoltaic module.

[0018] Furthermore, the calculation formula of the solar altitude angle is as follows:

[0019] α=arcsin(sinφsinδ+cosφcosδcosω),

[0020] Among them, α is the solar altitude angle; φ is the latitude of the base location; δ is the solar declination angle; ω is the hour angle;

[0021] The calculation formula for the solar azimuth is as follows:

[0022] β=arcsin(cosδsinω / cosα),

[0023] Where β is the solar azimuth angle.

[0024] It can be seen from the above technical solution that the beneficial effects of the present invention are:

[0025] The present invention provides a cylinder and a PLC controller, and can control the extension and contraction of the cylinder through the PLC controller, so as to adapt to the solar altitude angle in different time periods, so that the entire photovoltaic assembly can better receive light energy and better convert light energy into electrical energy;

[0026] The present invention can facilitate external staff to transmit instructions to the PLC controller through the signal receiver, thereby controlling the power output of the flywheel battery;

[0027] The present invention provides a servo motor, so that the orientation of the photovoltaic assembly can be adjusted according to needs after installation, thereby facilitating the photovoltaic assembly to better receive light energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0029] Figure 1 It is a schematic diagram of the overall structure of the photovoltaic energy storage device in the present invention;

[0030] Figure 2 It is a cross-sectional view of the photovoltaic energy storage device in the present invention.

[0031] Reference numerals:

[0032] 1-base, 2-signal receiver, 3-PLC controller, 4-annular groove, 5-support rod, 6-mounting plate, 7-connecting plate, 8-photovoltaic module, 9-cylinder, 10-servo motor, 11-hinge, 12-slide, 13-inverter, 14-flywheel battery. DETAILED DESCRIPTION

[0033] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0034] See also Figure 1-2: A photovoltaic energy storage device, comprising a base 1, a servo motor 10 is installed in the middle of the base 1, a mounting plate 6 is connected to the rotating end of the servo motor 10, a photovoltaic module 8 is movably installed on the mounting plate 6, a cylinder 9 is hinged at the bottom of the photovoltaic module 8, and the bottom of the cylinder 9 is installed on the mounting plate 6;

[0035] The base 1 is equipped with a signal receiver 2, a PLC controller 3 and an inverter 13. A flywheel battery 14 is installed inside the base 1. The signal receiver 2 is used to receive external signals. The signal receiver 2 is electrically connected to the PLC controller 3. The PLC controller 3 is electrically connected to the cylinder 9 and the servo motor 10. The inverter 13 is used to convert the light energy received in the photovoltaic module 8 into electrical energy in the flywheel battery 14.

[0036] The PLC controller 3 stores illumination information, which includes the solar altitude angle and the solar azimuth angle.

[0037] In actual use, by setting the cylinder 9 and the PLC controller 3, the expansion and contraction of the cylinder 9 can be controlled by the PLC controller 3 to adapt to the solar altitude angle in different time periods, so that the entire photovoltaic assembly 8 can better receive light energy and better convert light energy into electrical energy;

[0038] Through the signal receiver 2, it is convenient for external staff to transmit instructions to the PLC controller 3, thereby controlling the power output of the flywheel battery 14;

[0039] By providing the servo motor 10 , it is convenient to adjust the orientation of the photovoltaic assembly 8 according to needs after installation, so that the photovoltaic assembly 8 can better receive light energy.

[0040] In this embodiment, the latitude of the location of the base 1 and the solar declination angle are recorded in the PLC controller 3, and the PLC controller 3 obtains the hour angle in real time;

[0041] An angle measuring instrument is also included. The angle measuring instrument uses the mounting plate 6 as a horizontal plane and the photovoltaic component 8 as an inclined plane to measure the inclination angle of the photovoltaic component 8. The data measured by the angle measuring instrument is recorded in the PLC controller 3.

[0042] Specifically, the solar altitude angle and the solar azimuth angle can be calculated in different time periods according to the local latitude, solar declination angle and hour angle, so as to calculate the most suitable tilt angle of the photovoltaic assembly 8 for the time period. After the calculation, the cylinder 9 is controlled to rise and fall by the PLC controller 3, so as to adjust the tilt angle of the photovoltaic assembly 8. During the adjustment process, the tilt angle of the photovoltaic assembly 8 is measured by an angle measuring instrument, and the measurement data is entered into the PLC controller 3. After the tilt angle of the photovoltaic assembly 8 is measured to reach a suitable value, the PLC controller 3 controls the cylinder to close, so that the photovoltaic assembly 8 can better receive light energy.

[0043] In this embodiment, an annular groove 4 is provided on the base 1, and a support rod 5 is slidably provided on the annular groove 4, and the top of the support rod 5 is fixedly connected to the mounting plate 6; specifically, when the servo motor 10 is started, the support rod 5 can slide in the annular groove 4, thereby facilitating the rotation of the entire mounting plate 6.

[0044] In this embodiment, the photovoltaic assembly 8 includes a photovoltaic panel and a photovoltaic frame. The photovoltaic panel is installed in the photovoltaic frame. A slide groove 12 is provided at the bottom of the photovoltaic frame. A hinge 11 is slidably provided on the slide groove 12. The telescopic end of the cylinder 9 is hinged to the hinge 11. Connecting plates 7 are installed at both ends of the mounting plate 6. The ends of the photovoltaic frame are hinged in the connecting plates 7. Specifically, the photovoltaic frame can be tilted by lifting and lowering the cylinder, so as to facilitate the adjustment of the entire photovoltaic assembly 8, and the practicality is high.

[0045] In this embodiment, a connector and a snap-fit ​​member are provided on the side of the base 1, and two adjacent bases 1 are connected via the connector and the snap-fit ​​member; specifically, it is convenient to connect two adjacent bases 1, thereby forming an array layout of multiple groups of photovoltaic components to better receive light energy.

[0046] The present invention also discloses a method for using a photovoltaic energy storage device, which comprises the following steps:

[0047] S1, obtaining the latitude, solar declination angle and hour angle of the photovoltaic energy storage device, transmitting them to the PLC controller 3, and controlling the servo motor 10 to open and close through the PLC controller 3, so that the photovoltaic assembly 8 faces the sun throughout the whole process;

[0048] S2, calculating the solar altitude angle and the solar azimuth angle according to the latitude, the solar declination angle and the hour angle, thereby calculating the optimal tilt angle of the photovoltaic module 8;

[0049] S3, the PLC controller 3 controls the cylinder 9 to rise and fall, adjusts the tilt angle of the photovoltaic assembly 8, and the angle measuring instrument measures the actual tilt angle of the photovoltaic assembly 8 and transmits instructions to the PLC controller 3 until the photovoltaic assembly 8 tilts to the optimal tilt angle of the photovoltaic assembly 8.

[0050] In this embodiment, the calculation formula of the solar altitude angle is as follows:

[0051] α=arcsin(sinφsinδ+cosφcosδcosω),

[0052] Among them, α is the solar altitude angle; φ is the latitude of the location of the base 1; δ is the solar declination angle; ω is the hour angle;

[0053] The calculation formula for the solar azimuth is as follows:

[0054] β=arcsin(cosδsinω / cosα),

[0055] Where β is the solar azimuth angle.

[0056] Among them, the present invention also includes a photovoltaic energy storage system, including an inverter 13, a PLC controller 3, a flywheel battery 14 and a photovoltaic module 8, wherein the photovoltaic module 8 is arranged in a plurality of groups in an array; specifically, the light energy received by the photovoltaic module 8 can be converted into electrical energy through the inverter and stored in the flywheel battery 14, wherein the photovoltaic module 8 is externally connected to an output circuit, so that while the electrical energy is stored in the flywheel battery 14, the excess electrical energy can be used to power external electrical equipment.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A photovoltaic energy storage device, comprising a base (1), characterized in that: A servo motor (10) is installed in the middle of the base (1), the rotating end of the servo motor (10) is connected to a mounting plate (6), a photovoltaic assembly (8) is movably mounted on the mounting plate (6), a cylinder (9) is hinged at the bottom of the photovoltaic assembly (8), and the bottom of the cylinder (9) is mounted on the mounting plate (6); The base (1) is equipped with a signal receiver (2), a PLC controller (3) and an inverter (13); a flywheel battery (14) is installed inside the base (1); the signal receiver (2) is used to receive external signals; the signal receiver (2) is electrically connected to the PLC controller (3); the PLC controller (3) is electrically connected to the cylinder (9) and the servo motor (10); and the inverter (13) is used to convert light energy received in the photovoltaic module (8) into electrical energy in the flywheel battery (14); The PLC controller (3) stores illumination information, which includes the solar altitude angle and the solar azimuth angle.

2. A photovoltaic energy storage device according to claim 1, characterized in that: The PLC controller (3) records the latitude of the location of the base (1) and the solar declination angle, and the PLC controller (3) acquires the hour angle in real time.

3. A photovoltaic energy storage device according to claim 2, characterized in that: It also includes an angle measuring instrument, which uses the mounting plate (6) as a horizontal plane and the photovoltaic assembly (8) as an inclined plane to measure the inclination angle of the photovoltaic assembly (8), and the data measured by the angle measuring instrument is recorded in the PLC controller (3).

4. A photovoltaic energy storage device according to claim 1, characterized in that: The base (1) is provided with an annular groove (4), a support rod (5) is slidably provided on the annular groove (4), and the top of the support rod (5) is fixedly connected to the mounting plate (6).

5. A photovoltaic energy storage device according to claim 1, characterized in that: The photovoltaic assembly (8) comprises a photovoltaic panel and a photovoltaic frame, wherein the photovoltaic panel is mounted in the photovoltaic frame, a slide groove (12) is provided at the bottom of the photovoltaic frame, a hinge (11) is slidably provided on the slide groove (12), the telescopic end of the cylinder (9) is hinged to the hinge (11), connecting plates (7) are installed at both ends of the end of the mounting plate (6), and the end of the photovoltaic frame is hinged in the connecting plate (7).

6. A photovoltaic energy storage device according to claim 1, characterized in that: A connecting piece and a snap-fit ​​piece are provided on the side of the base (1), and two adjacent bases (1) are connected via the connecting piece and the snap-fit ​​piece.

7. A method for using a photovoltaic energy storage device, comprising a photovoltaic energy storage device according to claims 1-6, characterized in that: The method comprises the following steps: S1, obtaining the latitude, solar declination angle and hour angle of the photovoltaic energy storage device, transmitting them to the PLC controller (3), and controlling the servo motor (10) to start and stop through the PLC controller 3, so that the photovoltaic assembly (8) is facing the sun throughout the process; S2, calculating the solar altitude angle and the solar azimuth angle according to the latitude, the solar declination angle and the hour angle, thereby calculating the optimal tilt angle of the photovoltaic module (8); S3, the PLC controller (3) controls the cylinder (9) to rise and fall, adjusts the tilt angle of the photovoltaic module (8), and the angle measuring instrument measures the actual tilt angle of the photovoltaic module (8), and transmits instructions to the PLC controller (3) until the photovoltaic module (8) tilts to the optimal tilt angle of the photovoltaic module (8).

8. The method for using a photovoltaic energy storage device according to claim 1, characterized in that: The calculation formula of the solar altitude angle is as follows: Among them, α is the solar altitude angle; is the latitude of the location of the base (1); δ is the solar declination angle; ω is the hour angle; The calculation formula for the solar azimuth is as follows: β=arcsin(cosδsinω / cosα), Where β is the solar azimuth angle.

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