Solar cell automatic light following system

Abstract

The invention provides an automatic light following system for a solar cell, and the system comprises a cylindrical mirror array part which is disposed above a solar cell panel, and comprises a cylindrical mirror array film used for adjusting and controlling the incident sunlight, and a film buckle disposed at the periphery of the cylindrical mirror array film; the inclination angle adjusting part is arranged on the cell panel frame, is connected with the film buckle, and is used for adjusting the orientation and inclination angle of the cylindrical mirror array film; and the control part is used for controlling the inclination angle adjusting part to work, so that part of incident sunlight corresponding to the grid line area is adjusted and controlled by the cylindrical mirror array film and then is converged into the area without grid line shielding. According to the invention, the main body of the tracking condensation system is changed from a heavy solar cell panel to a cylindrical mirror array film, so that the system is light and easy to replace and control, and the power consumption and the maintenance cost are greatly reduced; light shielded by the grid electrode of the cell panel is converged to a nearby non-shielding part by the cylindrical mirror array, so that the photoelectric conversion efficiency of the cell is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of solar energy, and in particular relates to an automatic light-chasing system for solar cells. Background Art

[0002] Solar cells are a clean and pollution-free new energy source that has been widely produced and used. Finding ways to improve the photoelectric conversion efficiency of cells is the focus of solar energy development and research. However, the position of the incident light from the sun is constantly changing. The incident light at different elevation angles will have a large reflection loss on the surface of the solar panel, reducing the efficiency of the cell. In addition, in order to collect the light-separated carriers, a metal grid needs to be set on the top of the solar cell. The dense metal grid will block about 3-5% of the incident light. If the light energy blocked by the grid line can be used, the power generation of the cell can be effectively increased.

[0003] However, current solar cell automatic light-tracking systems are usually designed with dual-axis or single-axis mechanical control systems to rotate the panels to adjust their orientation, thereby achieving light-tracking. However, commercial-sized panels generally weigh 15-25kg. To use this method to control the panels, the rotation angle range of the panels needs to reach -90° to 90°. Designing such a mechanical control system is a very challenging task.

[0004] Chinese invention patent application CN117240200A discloses a solar panel assembly for tracking sunlight, including a base and a photovoltaic panel. A servo motor is fixedly installed inside the base to drive a driving rod to rotate. The driving motor is used to realize automatic light tracking of the solar panel, which consumes high power. If a problem occurs, the top battery needs to be removed before it can be repaired or replaced. Moreover, it is a single-axis light tracking system, and its application range is relatively narrow.

[0005] Chinese utility model patent CN221283106U discloses a multi-angle tracking solar bracket, which consists of a base and a support platform. When in use, the solar panel is mounted on the support platform, and the light tracking system is realized by rotating the support platform at the bottom. This method uses a mechanical structure in which the bottom bracket drives the gear set with a drive shaft, which is difficult to support large-sized solar panels, and has problems such as low precision, high noise, and unstable transmission.

[0006] Chinese invention patent application CN118244802A discloses a solar panel automatic tracking and positioning control method and system, which combines the photoelectric tracking method and the apparent sun motion trajectory tracking method to calculate the angle that the solar panel needs to rotate, and then drives the transmission structure on the solar power generation device through the fuzzy PID control algorithm integrated in the PLC controller, so that the solar panel installed on the solar power generation device rotates with the sunlight. The apparent sun motion trajectory calculation method of this patent is the same as ours, but the sensor of this method is directly exposed to the outside world and is easily interfered by stray light; and the method of rotating the solar panel is still used for light tracking, and the above problems still exist.

[0007] In summary, the existing solar cell tracking systems have the following problems: (1) The control subjects are all small-sized solar panels, which may not be suitable for commercial-grade large-sized solar panels; (2) The heavy solar panels are rotated by motors, which consumes a lot of energy, makes a lot of noise, and has large mechanical losses; (3) When a rotation system is designed using a bracket or directly on the base of the solar panel, the battery must be disconnected and removed for repair when a problem occurs, which has high maintenance costs; (4) The light energy loss caused by grid line shielding is not considered. Summary of the invention

[0008] In order to solve the above-mentioned deficiencies of the prior art, the main purpose of the present invention is to provide a solar cell automatic light tracking system.

[0009] To achieve the above object, the present invention adopts the following technical solutions:

[0010] The present invention provides an automatic light-tracking system for solar cells, which is installed on a solar panel frame located around a solar panel. The solar cell package has a grid line area and a grid line-free shielding area, and has the following characteristics: a cylindrical mirror array part, which is located above the solar panel and includes a cylindrical mirror array film for regulating incident sunlight, and a film buckle arranged around the cylindrical mirror array film; a tilt adjustment part, which is arranged on the solar panel frame and connected to the film buckle, and is used to adjust the orientation and tilt of the cylindrical mirror array film; and a control part, which is used to control the tilt adjustment part to work, wherein the control part includes a main control module, a GPS module, a drive module and a photoelectric tracking sensor, the GPS module is used to obtain the current longitude and latitude and the current time in real time, and the main control module determines when Whether the previous time was in a sunny period. If the current time is in a sunny period, the main control module calculates the theoretical position of the sun according to the current longitude and latitude and the current time and uses the apparent solar motion trajectory algorithm. The main control module controls the drive module to drive the tilt adjustment unit to work, and drives the cylindrical mirror array film to align with the theoretical position of the sun. The photoelectric tracking sensor is arranged on the top of the film buckle, and is used to measure the position of the incident sunlight in real time during the sunny period. The main control module calculates the coordinate error between the position of the incident sunlight measured by the photoelectric tracking sensor and the theoretical position, and controls the drive module to drive the tilt adjustment unit to work according to the coordinate error, and fine-tune the position of the cylindrical mirror array film, so that the part of the incident sunlight corresponding to the grid line area is regulated by the cylindrical mirror array film and converged into the area without grid line blocking.

[0011] The solar cell automatic light-tracking system provided by the present invention may also have the following features: wherein the cylindrical mirror array film has a cylindrical mirror array that matches the arrangement of the grid line area and the area without grid line blocking, the cylindrical mirror array is composed of a plurality of cylindrical mirrors arranged in a one-dimensional periodic arrangement or a two-dimensional periodic arrangement, and the cylindrical mirrors are made of any one of transparent glass, plastic, ceramic and a composite material.

[0012] The solar cell automatic light tracking system provided by the present invention may also have the following features: wherein the control unit also includes four positioning sensors respectively located at the four corners above the frame of the solar panel, for determining the position of the incident solar light when the intensity of the incident solar light acquired by the photoelectric tracking sensor is lower than a preset threshold value; the main control module calculates the coordinate error between the position of the incident light measured by the four positioning sensors and the theoretical position, and controls the driving module to drive the inclination adjustment unit to work according to the coordinate error, and fine-tune the position of the cylindrical mirror array film, so that all the incident solar light regulated by the cylindrical mirror array film is converged on the solar cell panel.

[0013] The solar cell automatic light-tracking system provided by the present invention may also have the following features: wherein, the photoelectric tracking sensor and the positioning sensor have the same structure, both containing a shading cylinder, a convex lens and a four-quadrant silicon photocell sensor, the shading cylinder is arranged vertically, the convex lens is arranged at the upper end of the shading cylinder, and the four-quadrant silicon photocell sensor is arranged at the lower end of the shading cylinder and slightly higher than the focal length of the convex lens.

[0014] The solar cell automatic light tracking system provided by the present invention may also have the following features: wherein the tilt adjustment portion includes four tilt adjustment units respectively located at the four corners of the solar panel frame, each tilt adjustment unit contains a vertical lifting component and a rotating component, the vertical lifting component is arranged on the solar panel frame, the rotating component is arranged on the vertical lifting component, and is connected to the film fastener.

[0015] The solar cell automatic light tracking system provided by the present invention may also have the following features: wherein the vertical lifting assembly has a telescopic rotating screw arranged vertically, and a screw driving motor for driving the telescopic rotating screw to rotate and lift.

[0016] The solar cell automatic light tracking system provided by the present invention may also have the following features: wherein the rotating assembly has a rotating joint arranged at the top of the telescopic rotating screw, and a joint driving motor for driving the rotating joint to perform a rotating motion.

[0017] The solar cell automatic light-tracking system provided by the present invention may also have the following features: wherein the vertical lifting component and the rotating component cooperate with the control unit to form vibration modes of different frequencies, which can remove rain, snow, dust and fallen leaves.

[0018] The solar cell automatic light tracking system provided by the present invention may also have the following features: wherein, a heating patch is provided around the cylindrical mirror array film, and the heating patch is a copper foil heating plate, an aluminum foil heating plate, a graphene heating plate, a molybdenum disulfide heating plate or a ceramic heating plate.

[0019] Compared with the prior art, the advantages of the solar cell automatic light tracking system of the present invention are:

[0020] First, the main body of the tracking system is replaced from the base under the solar panel to the cylindrical mirror array film above the solar panel. It does not require the movement and adjustment of the heavy solar panel, is lighter and more energy-efficient, easier to replace and control, and greatly reduces power consumption and maintenance costs.

[0021] Second, the light blocked by the grid of the solar panel will be focused by the cylindrical mirror array film to the nearby unblocked part, increasing the photovoltaic conversion efficiency of the battery.

[0022] Third, the automatic light-chasing system is placed above the solar panels and has shielding, vibration and heating functions, which helps to shield and remove rain, snow, dust, fallen leaves and other coverings, increasing the reliability and service life of the photovoltaic array. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of an automatic light-chasing system for solar cells in an embodiment of the present invention;

[0024] Figure 2 is a schematic diagram of the structure of a photoelectric tracking sensor and a positioning sensor in an embodiment of the present invention;

[0025] Figure 3 is a schematic diagram of an automatic light-chasing system for solar cells in an embodiment of the present invention; and

[0026] Figure 4 It is a diagram showing the effect of gate line regulation in an embodiment of the present invention. DETAILED DESCRIPTION

[0027] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention.

[0028] <Example>

[0029] refer to Figure 1 The present embodiment provides a solar cell automatic light tracking system, which is installed on the solar panel frame 7 located around the solar panel; in the present embodiment, the solar cell automatic light tracking system and the solar panel are installed along the north-south direction when in use, and the solar panel has a grid line area 9 and a grid line-free shielding area 10 arranged in a preset arrangement. The solar cell automatic light tracking system includes a cylindrical mirror array unit, a tilt angle adjustment unit, and a control unit.

[0030] like Figure 1 As shown, the cylindrical mirror array portion is located above the solar cell panel, and includes a cylindrical mirror array film 1 and a film fastener 2 .

[0031] The cylindrical mirror array film 1 has a cylindrical mirror array structure that can regulate the incident sunlight, so that the light originally blocked by the grid lines is converged to the grid line-free blocking area 10 of the solar panel, thereby reducing and avoiding the grid line blocking effect, but it is different from the concentrator of the concentrating solar cell, avoiding the temperature rise effect caused by excessive convergence. In this embodiment, the cylindrical mirror array film 1 has a cylindrical mirror array that matches the arrangement of the grid line area 9 and the grid line-free blocking area 10; the cylindrical mirror array is composed of a plurality of cylindrical mirrors arranged in a one-dimensional periodic arrangement or a two-dimensional periodic arrangement, and the cylindrical mirrors are made of any one of transparent glass, plastic, ceramic and composite materials. The shape of the cylindrical mirror can be designed as a free-form surface or other shapes as needed.

[0032] The film fasteners 2 are arranged around the cylindrical mirror array film 1 .

[0033] like Figure 1 As shown, the tilt adjustment unit is arranged on the solar panel frame 7 and connected to the film fastener 2, and is used to adjust the orientation and tilt of the cylindrical mirror array film 1. The tilt adjustment unit comprises four tilt adjustment units respectively located at the four corners of the solar panel frame, and each tilt adjustment unit comprises a vertical lifting component and a rotating component.

[0034] The vertical lifting assembly is arranged on the solar panel frame 7, and has telescopic rotating screws 4 and 5, and a screw driving motor.

[0035] The telescopic rotating screws 4 and 5 are arranged vertically, and can adjust the height of the cylindrical mirror array film 1 by rotating.

[0036] The screw drive motor is used to drive the telescopic rotating screws 4 and 5 to rotate.

[0037] The rotating assembly has a rotating joint and a joint driving motor.

[0038] The rotary joint is arranged on the top of the telescopic rotary screw 4 in the vertical lifting assembly and is connected to the film fastener 2 , so that the telescopic rotary screws 4 and 5 are hinged to the film fastener 2 .

[0039] The joint drive motor is used to drive the rotary joint to rotate, thereby causing the film fastener 2 to rotate relative to the rotating screws 4 and 5.

[0040] like Figure 1 As shown, the control unit is used to control the tilt angle adjustment unit to work, and includes a main control module 8, a GPS module, a photoelectric tracking sensor 3, four positioning sensors 6, an information collection module, a driving module and a lithium battery module.

[0041] The main control module 8 is arranged on the film buckle 2, and the main body uses the STM32F103 chip, which has the advantages of low power consumption, low cost and high performance.

[0042] The GPS module is used to obtain the current longitude and latitude and the current time in real time. The ATGM336H module can achieve high-precision positioning under weak GPS signals, low power consumption, low price, and built-in non-volatile memory.

[0043] The photoelectric tracking sensor 3 is arranged on the top of the film fastener 2, and is used for measuring the position of the incident sunlight in real time during the sunny period.

[0044] The four positioning sensors 6 are respectively located at the four corners of the solar panel frame 7, and are used to determine the position of the incident sunlight when the light intensity of the incident sunlight obtained by the photoelectric tracking sensor 3 is lower than a preset threshold.

[0045] In this embodiment, the photoelectric tracking sensor 3 and the positioning sensor 6 both have Figure 2 The structure shown (such as Figure 2 As shown), it contains a light-shielding cylinder 12, a convex lens 11, a four-quadrant silicon photocell sensor 13 and a circuit board 14. The light-shielding cylinder 12 is a hard hollow cylinder arranged vertically; the convex lens 11 is arranged at the upper end of the light-shielding cylinder 12; the four-quadrant silicon photocell sensor 13 is arranged at the lower end of the light-shielding cylinder 12 and slightly higher than the focal length of the convex lens 11, and adopts the OSD100-IC model of Shanghai Ouguang Company, which has a size of 1cm 2 When external sunlight shines on the sensor from above, it will be converged by the convex lens 11, forming a light spot on the four-quadrant silicon photocell sensor 13 at the bottom. The four-quadrant silicon photocell sensor 13 will convert the position information of the converged light spot into a voltage signal, and transmit it to the information acquisition module for processing through the connected circuit board 14.

[0046] The information acquisition module uses the MAXI86 chip to sample and hold the sensor signal. It has fast conversion speed, high accuracy, low power consumption, simple wiring, and transmits the signal to the main control module 8 through a serial connection.

[0047] The drive module has four lifting drive modules corresponding to the four screw drive motors, and four rotating drive modules corresponding to the four joint drive motors. In this embodiment, both the lifting drive module and the rotating drive module are implemented by L298N module, which has the advantages of good robustness and low price; the screw moves up and down by L298N module to drive the low-voltage and low-speed motor to rotate the screw, and the screw moves up and down by one thread when the motor rotates one circle. In view of the slow change of the angle of the sun, this method has better control accuracy; the left and right rotation of the joint uses a DC motor to directly drive the small gear at the screw rotating joint to move, and the motor speed is controlled by the output PWM duty cycle of the single-chip microcomputer.

[0048] The lithium battery module provides 5V power supply for the whole system, and is charged from the solar cell module by a charging circuit.

[0049] In this embodiment, the working process of the solar cell automatic light tracking system is as follows:

[0050] After the system is powered on, the GPS module obtains the current latitude and longitude and current time in real time.

[0051] The main control module 8 determines whether the current time is in a sunny period.

[0052] If it is night or early morning when there is no sun, the time difference of sunrise is calculated and the system goes into sleep mode to wait for sunrise. If the current time is during a period when there is sun, the main control module 8 calculates the theoretical position of the sun according to the current longitude and latitude and the current time and using the apparent sun motion trajectory algorithm.

[0053] The main control module 8 controls the driving module to drive the tilt adjustment unit to work, driving the cylindrical mirror array film 1 to align with the theoretical position of the sun. In fact, due to factors such as cloud reflection and environmental occlusion, the theoretical position may not be the best position, so further fine-tuning is required.

[0054] The photoelectric tracking sensor 3 measures the position of incident sunlight in real time during the period of sunlight.

[0055] The main control module 8 calculates the coordinate error between the position of the incident sunlight measured by the photoelectric tracking sensor 3 and the theoretical position.

[0056] The main control module 8 controls the driving module to drive the tilt angle adjustment unit to work according to the coordinate error, and fine-tunes the position of the cylindrical mirror array film 1, so that all the incident solar rays regulated by the cylindrical mirror array film 1 are concentrated on the solar cell panel.

[0057] In this embodiment, the vertical lifting assembly and the rotating assembly cooperate through the control unit to form vibration modes of different frequencies, which can remove rain, snow, dust, fallen leaves and other coverings. The control unit has operation buttons and a software interface, which can be manually adjusted or software controlled.

[0058] In this embodiment, the periphery of the cylindrical mirror array film 1 is also provided with a heating patch, which is a copper foil heating patch, an aluminum foil heating patch, a graphene heating patch, a molybdenum disulfide heating patch or a ceramic heating patch. The heating patch is connected to the control unit and the power supply, and can realize the heating function under the control of the control unit. The power supply can be an external power supply or a power supply provided by the solar panel itself.

[0059] Since the photoelectric tracking sensor 3 has certain requirements for the incident light intensity, if the light intensity it obtains is lower than the preset threshold, photoelectric tracking cannot be performed. In actual operation, the light intensity at this time is recorded as the maximum light intensity reference, which is used for positioning by the positioning sensor 6. Each positioning sensor 6 obtains the position corresponding to the incident light in real time, and the main control module 8 calculates the coordinate error between the position of the incident light measured by the four positioning sensors 6 and the theoretical position, and controls the driving module to drive the inclination adjustment unit to work according to the coordinate error, and fine-tune the position of the cylindrical mirror array film 1, so that all the incident sunlight after being regulated by the cylindrical mirror array film 1 is concentrated on the solar cell panel.

[0060] In order to verify the technical effect of the present invention, the focusing effect of the cylindrical mirror array and the modulation effect of the incident grating line are verified using LightTools optical simulation design software. Figure 3 , the elevation angle of sunlight is defined as θ, and there are many variables for the position of the cylindrical mirror array film 1. Here, the two main influencing parameters are shown: the inclination angle α in the x-axis direction and the height h of the film from the battery. In the simulation experiment, the thickness of the silicon wafer of the bottom solar panel is first set to 30mm, and the length and width are both 173mm, which is equivalent to the standard silicon wafer size, but the unit is reduced from cm to mm, and the light receiver is set on the top of the silicon wafer; the material of the top cylindrical mirror array 1 is PMMA, with a thickness of 3mm, and a length and width of 173mm. Then, a periodic structure is set on its top, which is in the shape of a protruding cylindrical array, with an array unit radius of 5mm and a length of 10mm. In the initial state, the bottom silicon wafer and the PMMA array are placed parallel, and the bottom of the array is 20mm away from the silicon wafer. Then, the position of the silicon wafer is fixed, and a 1m×1m rectangular light source is set to emit parallel light, 5m away from the silicon wafer as the sun. By adjusting the angle between the parallel light source and the silicon wafer in the xy plane, the actual operation process of the sun is simulated. Since the process of the sun rising in the east and setting in the west can be regarded as a symmetrical process, the experiment only conducted the process of θ decreasing from 90° to 0°.

[0061] Read the illumination information displayed by LuxViewer. After being regulated by the grid lines of the PMMA cylindrical mirror, light from different directions will be focused on the bottom silicon cell to form periodic stripes of light. The effect of θ° of 30° is as follows: Figure 4 As shown, 15 in the figure is a low illumination area, corresponding to the grid line area 9; 16 is a high illumination area, corresponding to the non-grid line shielding area 10.

[0062] Table 1 shows the maximum illumination value of the light receiver under different θ and film positions; Table 2 shows the optimal position parameters of the film under different θ.

[0063] Table 1

[0064]

[0065] Table 2

[0066]

[0067] The experimental results are shown in Tables 1 and 2, where Y / N in Table 1 represents whether the grid line modulation effect can be achieved. In the experiment, it can be found that the height h has a critical effect on the focusing effect. As θ decreases, h needs to be reduced to improve the focusing effect; α also has a certain effect, but in actual adjustment, only about 1° adjustment is needed to meet the demand. When θ is reduced to 15°, adjusting the inclination angle and height of the film cannot achieve grid line modulation, but it has a certain focusing effect. This is because the h value required for focusing is too low at this time, causing the film to collide with the solar panel and unable to achieve grid line modulation; when it is reduced to 0°, the focusing function is also lost. The incident sunlight at an elevation angle of 15° is the moment when the sun is about to set. At this time, the incident sunlight intensity itself is weak, and the 0° elevation corresponds to the situation where the sun is completely below the horizon, so the incident light in these two situations can be ignored.

[0068] The above-mentioned embodiments are preferred examples of the present invention and are not intended to limit the protection scope of the present invention.

Claims

1. A solar cell automatic light tracking system, installed on the solar panel frame around the solar panel, the solar cell package has a grid line area and a grid line-free area, characterized in that: include: A cylindrical mirror array portion, located above the solar cell panel, comprising a cylindrical mirror array film for regulating incident sunlight, and film fasteners arranged around the cylindrical mirror array film; An inclination adjustment unit, disposed on the solar panel frame and connected to the film fastener, for adjusting the orientation and inclination of the cylindrical mirror array film; as well as A control unit, used to control the tilt angle adjustment unit to work, The control unit includes a main control module, a GPS module, a drive module and a photoelectric tracking sensor. The GPS module is used to obtain the current latitude and longitude and the current time in real time. The main control module determines whether the current time is in a period of sunshine. If the current time is in a period of sunlight, the main control module calculates the theoretical position of the sun according to the current longitude and latitude and the current time using an apparent solar motion trajectory algorithm. The main control module controls the driving module to drive the tilt angle adjustment unit to work, driving the cylindrical mirror array film to align with the theoretical position of the sun. The photoelectric tracking sensor is arranged on the top of the film buckle and is used to measure the position of the incident sunlight in real time during the period of sunshine. The main control module calculates the coordinate error between the position of the incident sunlight measured by the photoelectric tracking sensor and the theoretical position, and controls the driving module to drive the tilt adjustment unit to work according to the coordinate error, and fine-tunes the position of the cylindrical mirror array film, so that the part of the incident sunlight corresponding to the grid line area is regulated by the cylindrical mirror array film and converged into the area without grid line blocking.

2. The solar cell automatic light tracking system according to claim 1, characterized in that: in, The cylindrical mirror array film has a cylindrical mirror array that matches the arrangement of the grid line area and the non-grid line shielding area. The cylindrical mirror array is composed of a plurality of cylindrical mirrors arranged in a one-dimensional periodic arrangement or a two-dimensional periodic arrangement. The cylindrical mirror is made of any one of transparent glass, plastic, ceramic and composite materials.

3. The solar cell automatic light tracking system according to claim 1, characterized in that: in, The control unit also includes four positioning sensors located at the four corners above the solar panel frame, respectively, for determining the position of the incident sunlight when the intensity of the incident sunlight acquired by the photoelectric tracking sensor is lower than a preset threshold. The main control module calculates the coordinate error between the position of the incident light measured by the four positioning sensors and the theoretical position, and controls the driving module to drive the tilt adjustment unit to work according to the coordinate error, and fine-tunes the position of the cylindrical mirror array film, so that the incident solar light regulated by the cylindrical mirror array film is all concentrated on the solar cell panel.

4. The solar cell automatic light tracking system according to claim 3, characterized in that: in, The photoelectric tracking sensor and the positioning sensor have the same structure, both of which contain a light-shielding cylinder, a convex lens and a four-quadrant silicon photocell sensor. The light-shielding cylinder is arranged vertically. The convex lens is arranged at the upper end of the light-shielding cylinder. The four-quadrant silicon photocell sensor is arranged at the lower end of the light-shielding cylinder and at a position slightly higher than the focal length of the convex lens.

5. The solar cell automatic light tracking system according to claim 1, characterized in that: in, The tilt angle adjustment part includes four tilt angle adjustment units respectively located at the four corners of the solar panel frame. Each of the tilt adjustment units comprises a vertical lifting component and a rotating component. The vertical lifting assembly is arranged on the frame of the solar panel. The rotating assembly is arranged on the vertical lifting assembly and is connected to the film fastener.

6. The solar cell automatic light tracking system according to claim 5, characterized in that: in, The vertical lifting assembly comprises a telescopic rotating screw rod arranged vertically, and a screw driving motor for driving the telescopic rotating screw rod to rotate and lift.

7. The solar cell automatic light tracking system according to claim 6, characterized in that: in, The rotating assembly comprises a rotating joint arranged at the top of the telescopic rotating screw and a joint driving motor for driving the rotating joint to perform a rotating motion.

8. The solar cell automatic light tracking system according to claim 5, characterized in that: in, The vertical lifting assembly and the rotating assembly cooperate with each other through the control unit to form vibration modes of different frequencies, which can remove rain, snow, dust and fallen leaves.

9. The solar cell automatic light tracking system according to claim 1, characterized in that: in, The cylindrical mirror array film has a heating patch around its periphery. The heating patch is a copper foil heating sheet, an aluminum foil heating sheet, a graphene heating sheet, a molybdenum disulfide heating sheet or a ceramic heating sheet.

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