Sun position tracking device and concentrating photovoltaic system

Abstract

The invention discloses a sun position tracking device and a concentrating photovoltaic system, the sun position tracking device comprises a tracking device main body, a plurality of solar cell modules and a controller, the plurality of solar cell modules are respectively arranged on the top surface, the front surface, the back surface, the left surface and the right surface of the tracking device main body, and the light-sensitive surface of each solar cell module faces the outside of the tracking device main body; the front solar cell module, the rear solar cell module, the left solar cell module and the right solar cell module are all perpendicular to the top solar cell module, the front solar cell module and the rear solar cell module are parallel and opposite to each other, and the left solar cell module and the right solar cell module are parallel and opposite to each other. The front solar cell module is perpendicular to the left solar cell module, all the solar cell modules are connected with the controller, the position of the sun can be accurately tracked, the environment interference resistance is high, the hardware structure is simple, and the reliability is high.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic technology, and in particular to a solar position tracking device and a concentrated photovoltaic system. Background Technology

[0002] Driven by the global energy transition strategy, solar energy, as a clean, sustainable, and high-quality renewable energy source, has become a core component of the future energy system due to its advantages of high technological maturity, safe and reliable operation, and the ability to be combined with energy storage technologies to achieve stable power supply. Solar cells, as the core equipment for converting solar energy into electricity, have their power generation efficiency primarily constrained by their effective absorption efficiency of sunlight. Currently, commercial solar power generation technologies are mainly divided into two major routes: photovoltaic (PV) power generation and concentrated solar power (CSP). Among them, concentrated photovoltaic (CPV) systems have become an important direction for improving solar energy utilization efficiency due to their significant technological advantages. This system uses optical elements such as Fresnel lenses to focus sunlight over a large area onto the surface of high-efficiency photovoltaic cells such as gallium arsenide (GaAs). On the one hand, this significantly reduces the consumption of semiconductor materials and substantially lowers the manufacturing cost per unit power; on the other hand, the concentrating effect further improves the photoelectric conversion efficiency of photovoltaic cells, making them extremely valuable for large-scale grid-connected power generation scenarios.

[0003] However, the high concentration characteristics of CPV systems require extremely high precision in the solar incidence angle. Their typical concentration ratio ranges from 100 to 1000 times. If the solar incidence angle deviates by more than 1°, the concentrated light spot will deviate from the effective light-receiving surface of the battery, leading to a significant decrease in light energy utilization. Therefore, CPV systems need to achieve solar position tracking accuracy at the ±0.5° level. As the concentration ratio of CPV systems develops to even higher levels, greater challenges are posed to the accuracy, stability, and real-time performance of solar position tracking technology.

[0004] Therefore, there is an urgent need to develop a solar position tracking device with high tracking accuracy to meet the requirements of high-rate CPV systems for solar position tracking and further improve the efficiency of solar energy utilization. Summary of the Invention

[0005] In view of this, the present invention provides a solar position tracking device and a concentrated photovoltaic system to solve the problem of low accuracy in existing solar position tracking devices.

[0006] To achieve one, some, or all of the above objectives or other objectives, a first aspect of the present invention provides a solar position tracking device, comprising a tracking device body, a plurality of solar cell components, and a controller. The plurality of solar cell components are respectively disposed on the top, front, rear, left, and right sides of the tracking device body. The photosensitive surface of each solar cell component faces the outside of the tracking device body. The front, rear, left, and right solar cell components are all perpendicular to the top solar cell component. The front solar cell component is parallel to and opposite to the rear solar cell component. The left solar cell component is parallel to and opposite to the right solar cell component. The front solar cell component is perpendicular to the left solar cell component. Each solar cell component is connected to the controller.

[0007] Furthermore, the main body of the tracking device is a regular hexahedron.

[0008] Furthermore, each of the solar cell modules is located at the center of the corresponding mounting surface of the tracking device body.

[0009] Furthermore, the main body of the tracking device is made of glass.

[0010] Furthermore, a magnetic suction part is provided on the bottom surface of the main body of the tracking device.

[0011] Furthermore, the magnetic suction part includes a plurality of magnets, and the bottom surface of the tracking device body is machined with a plurality of countersunk holes, each of the magnets being embedded in the corresponding countersunk holes, and the countersunk holes and the magnets being glued and fixed together.

[0012] Furthermore, the depth of the countersunk hole is greater than the height of the magnet. After the countersunk hole and the magnet are glued together, the outer surface of the magnet is flush with the bottom surface of the tracking device body.

[0013] Furthermore, each of the solar cell modules is connected to the controller via leads. Each solar cell module includes a solar cell, a base plate, and metal terminals. The solar cell is disposed on the base plate, and the metal terminals are fixed on the base plate. The positive and negative terminals of the solar cell are electrically connected to a metal terminal, respectively. One end of the lead is welded to the metal terminal, and the other end of the lead is connected to the controller.

[0014] Furthermore, the metal terminal has a hollow structure, and the metal terminal includes a positive metal terminal and a negative metal terminal, which are respectively disposed on both sides of the solar cell.

[0015] A second aspect of the present invention provides a concentrated photovoltaic system, including a concentrated photovoltaic module, a dual-axis adjustment bracket, a control system, and the aforementioned solar position tracking device. The concentrated photovoltaic module is mounted on the dual-axis adjustment bracket, and the solar position tracking device is mounted on one side of the concentrated photovoltaic module. The solar position tracking device maintains a preset distance from the edge of the concentrated photovoltaic module, and the top surface of the solar position tracking device is lower than the upper surface of the concentrated photovoltaic module. The top surface of the solar position tracking device is parallel to the upper surface of the concentrated photovoltaic module. The dual-axis adjustment bracket is connected to the control system, and the control system is connected to the controller of the solar position tracking device.

[0016] Implementing the embodiments of the present invention will have the following beneficial effects:

[0017] The solar position tracking device and concentrated photovoltaic system of the present invention directly acquire current density difference signals through multi-faceted distributed solar cell modules, and then accurately track the position of the sun based on the current density difference between different modules. It has strong anti-environment interference capability, simple hardware structure, and high reliability, which can meet the high tracking accuracy requirements of high-rate concentrated photovoltaic systems and improve the solar energy utilization efficiency of concentrated photovoltaic systems. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] in:

[0020] Figure 1 This is a schematic block diagram of the solar position tracking device in one embodiment;

[0021] Figure 2 This is a schematic diagram of the structure of a solar position tracking device in one embodiment;

[0022] Figure 3 This is a cross-sectional structural diagram of a solar position tracking device in one embodiment;

[0023] Figure 4 This is a cross-sectional structural diagram of the solar position tracking device in another embodiment;

[0024] Figure 5 This is a cross-sectional structural diagram of the solar position tracking device in another embodiment;

[0025] Figure 6This is a schematic diagram of the structure of the solar position component in one embodiment;

[0026] Figure 7 This is a schematic cross-sectional view of the base plate of a solar cell module in one embodiment;

[0027] Figure 8 This is a cross-sectional structural diagram of the base plate of a solar cell module in another embodiment;

[0028] Figure 9 This is a schematic diagram of the structure of a solar position tracking device in one embodiment;

[0029] Figure 10 This is a schematic block diagram of the solar position tracking device in one embodiment.

[0030] Explanation of the attached drawing numbers:

[0031] 100: Tracking device main body;

[0032] 200: Solar panel; 210: Top solar panel; 220: Front solar panel; 230: Rear solar panel; 240: Left solar panel; 250: Right solar panel;

[0033] 201: Solar cell; 260: Base plate; 261: Positive electrode lead-out wire; 262: Negative electrode lead-out wire; 263: Positive electrode contact; 264: Negative electrode contact; 271: Positive metal terminal; 272: Negative metal terminal;

[0034] 300: Controller;

[0035] 400: Magnetic suction part; 410: Magnet;

[0036] 500: Lead wire;

[0037] 10: Solar position tracking device; 20: Concentrated photovoltaic module; 30: Dual-axis adjustment bracket; 40: Control system. Detailed Implementation

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the specification is for the purpose of describing particular embodiments only and is not intended to limit the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings are used to distinguish different objects and not to describe a particular order.

[0039] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0040] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0041] Reference Figures 1-2 An embodiment of the present invention illustrates a solar tracking device, including a tracking device body 100, a plurality of solar cell modules 200, and a controller 300. The plurality of solar cell modules 200 are respectively disposed on the top, front, rear, left, and right sides of the tracking device body 100. The photosensitive surface of each solar cell module 200 faces the outside of the tracking device body 100. The front solar cell module 220, the rear solar cell module 230, the left solar cell module 240, and the right solar cell module 250 are all perpendicular to the top solar cell module 210. The front solar cell module 220 and the rear solar cell module 230 are parallel and opposite to each other. The left solar cell module 240 and the right solar cell module 250 are parallel and opposite to each other. The front solar cell module 220 and the left solar cell module 240 are perpendicular to each other. Each solar cell module 200 is connected to the controller 300.

[0042] In this embodiment, the tracking device body 100 serves as the mounting carrier for the solar cell module 200, and the material can be transparent glass, transparent resin, or aluminum plate, etc. The solar cell module 200 is selected from photovoltaic modules such as monocrystalline silicon, polycrystalline silicon, gallium arsenide, and perovskite. The size of a single solar cell module 200 is designed to be adapted to the overall size of the tracking device. Different solar cell modules 200 preferably adopt the same size specifications. For example, the tracking device body 100 is a cube with a side length of 50mm, and the effective light-receiving surface of the solar cell module is 10mm.

[0043] The front solar panel 220 and the rear solar panel 230 are symmetrically distributed along the front-rear axis of the tracking device body 100, while the left solar panel 240 and the right solar panel 250 are symmetrically distributed along the left-right axis. All four are positioned perpendicular to the top solar panel 210 at a 90° angle, thus achieving full coverage detection of sunlight. When the sun's position changes, the solar panels 200 in different positions will produce different output currents due to differences in their angle of illumination. For example, when the sun shifts to the left, the light intensity of the left solar panel 240 increases, resulting in a greater output current than the right solar panel 250. This current difference signal is transmitted to the controller 300 in real time.

[0044] The controller 300 can be integrated into the inner bottom or outer edge of the tracking device body 100. The controller 300 establishes an electrical connection with each solar cell module 200 through wires, collects the output current data of each module in real time, determines the real-time azimuth deviation of the sun based on the current difference of different modules, and then generates an angle adjustment command based on the real-time azimuth deviation and sends it to the angle adjustment actuator, such as the dual-axis adjustment bracket of a concentrated photovoltaic system, so that the concentrated photovoltaic system can track the azimuth facing the sun in real time.

[0045] This embodiment directly acquires the current density difference signal through multi-faceted distributed solar cell modules 200, which has strong anti-environment interference capability. Even if it encounters short-term cloud cover, the current difference of each module can still reflect the relative position of the sun. Moreover, the hardware structure is simple, low-cost, and highly reliable, which can meet the high tracking accuracy requirements of high-rate concentrated photovoltaic systems.

[0046] In some specific embodiments, reference is made to Figure 2 The tracking device body 100 is a regular hexahedron, i.e., a cubic structure. Each of the solar cell modules 200 is located at the center of the corresponding mounting surface of the tracking device body 100. The center of the surface is the intersection of the two diagonals of the mounting surface.

[0047] In some specific embodiments, reference is made to Figure 2 The tracking device body 100 is made of glass. For the glass tracking device body 100, the solar cell assembly 200 can be installed on the outside of the tracking device body 100 or on the inside of the tracking device body 100.

[0048] For those installed on the outside of the tracking device body 100, refer to Figures 3-4The back side (non-photosensitive side) of the solar cell module 200 can be bonded to the tracking device body 100 using conductive silver paste. Before bonding, the tracking device body 100 is ultrasonically cleaned for 15 minutes each with acetone and anhydrous ethanol to remove surface oil and impurities, ensuring bonding strength. For example, a high-precision dispensing machine is used to evenly apply conductive silver paste to the back side of the solar cell module 200, ensuring a consistent adhesive layer thickness controlled at 0.05 mm. The solar cell module 200 is then quickly placed on a predetermined area corresponding to the surface of the tracking device body 100, a pressure of 0.5 MPa is applied, and it is cured at 150°C for 1 hour. In one specific embodiment, a solar cell mounting groove is pre-formed on the tracking device body 100, and the surface of the solar cell module 200 is flush with the surface of the tracking device body 100. In another specific embodiment, the surface of the solar cell module 200 is higher than the surface of the tracking device body 100. Leads from each solar cell module 200 extend from the side and connect to the controller 300.

[0049] For the inner side of the tracking device body 100, refer to Figure 5 The solar cell module 200 is attached to the inner side of the corresponding mounting surface of the tracking device body 100, with the photosensitive surface of the solar cell module 200 facing outwards from the glass. The photosensitive surface of the solar cell module 200 is bonded to the inner side of the tracking device body 100 using transparent adhesive such as transparent epoxy resin. The glass of the tracking device body 100 can directly withstand the impact of outdoor hail and sandstorms, protecting the solar cell module 200; the sealed cavity can isolate rainwater, extending the module's lifespan. The leads of the solar cell module 200 can be led out from the back of the module and laid along the inner wall of the tracking device body 100, preventing the leads from being exposed to the outdoors to age or be damaged, thus improving the reliability of the electrical connection.

[0050] In some specific embodiments, reference is made to Figures 2-4 The tracking device body 100 has a magnetic suction part 400 on its bottom surface. The magnetic suction part 400 is used to quickly connect the solar position tracking device to the metal mounting bracket of the external concentrating photovoltaic module via magnetic attraction.

[0051] The core component of the magnetic suction unit 400 consists of several strong magnets, exemplarily neodymium iron boron permanent magnets. For example, four 20mm diameter neodymium iron boron magnets (remanence Br≥1.2T, coercivity Hc≥800kA / m) are used, with an attraction force ≥20N. In practical applications, the magnetic suction unit 400 is particularly suitable for metal biaxial brackets in concentrated photovoltaic systems. The tracking device is fixed to an empty area of ​​the bracket (such as the upper right corner of the concentrated photovoltaic module) via the magnetic suction unit 400, providing convenient and stable installation and allowing for flexible adjustment of the installation position.

[0052] In some specific embodiments, reference is made to Figures 3-5The magnetic attraction part 400 includes a plurality of magnets 410. The bottom surface of the tracking device body 100 is machined with a plurality of countersunk holes. Each magnet 410 is correspondingly embedded in its respective countersunk hole, and the countersunk hole and the magnet 410 are glued together. The countersunk hole positioning further improves the installation stability of the magnetic attraction part 400, making it suitable for complex working conditions such as long-term outdoor vibration and strong winds. The adhesive can be epoxy resin, which has high bonding strength, strong weather resistance, and good insulation, making it suitable for bonding dissimilar materials such as glass and magnets.

[0053] In some specific embodiments, reference is made to Figures 3-5 The depth of the countersunk hole is greater than the height of the magnet 410. After the countersunk hole and the magnet 410 are glued and fixed together, the outer surface of the magnet 410 is flush with the bottom surface of the tracking device body 100. After the outer surface of the magnet 410 is flush with the bottom surface of the tracking device body 100, the bottom surface of the device can completely adhere to the external metal carrier, further enhancing the stability of the magnetic adsorption.

[0054] In some specific embodiments, reference is made to Figure 6 and Figure 9 Each of the solar cell modules 200 is connected to the controller 300 via a lead wire 500. Each solar cell module 200 includes a solar cell 201, a base plate 260, and metal terminals. The solar cell 201 is disposed on the base plate 260, and the metal terminals are fixed on the base plate 260. The positive and negative terminals of the solar cell 201 are electrically connected to one of the metal terminals, respectively. One end of the lead wire 500 is welded to the metal terminal, and the other end of the lead wire 500 is connected to the controller 300.

[0055] In this embodiment, the base plate 260 is used to support the solar cell 201 and the metal terminals. In some embodiments, the metal terminals include a positive metal terminal 271 and a negative metal terminal 272. (Refer to...) Figure 7 and Figure 8The base plate 260 is made of an insulating substrate material, with a positive electrode lead wire 261 and a negative electrode lead wire 262 pre-laid inside. The positive electrode lead wire 261 has two positive electrode contacts 263 on the surface of the base plate 260, and the negative electrode lead wire 262 has two negative electrode contacts 264 on the surface of the base plate 260. The positive and negative electrodes of the solar cell 201 are respectively welded to one positive electrode contact 263 and one negative electrode contact 264. The positive metal terminal 271 is welded to the other positive electrode contact 263, and the negative metal terminal 272 is welded to the other negative electrode contact 264. In addition to the welding points, the bottom of the solar cell 201 can also be glued to the base plate 260 with insulating adhesive to ensure a stable connection between the solar cell 201 and the base plate 260. The lead wire 500 can be a silver-plated lead wire. One end of the lead wire 500 is soldered to a metal terminal. After the lead wire 500 is led out from the metal terminal, it is laid along the edge of the tracking device body 100, and the other end is connected to the controller 300.

[0056] In some specific embodiments, the metal terminal has a hollow structure, and the metal terminal includes a positive metal terminal 271 and a negative metal terminal 272, which are respectively disposed on both sides of the solar cell 201.

[0057] The metal terminal block features a hollow structure, facilitating the insertion of the lead 500 end into the metal terminal block, thereby protecting the solder joint area and reducing the risk of solder joint detachment. The hollow structure refers to the formation of a cavity within the metal terminal block for accommodating / passing through the lead.

[0058] The positive metal terminal 271 and the negative metal terminal 272 are symmetrically distributed along the central axis of the solar cell 201. Preferably, for the front, back, left and right sides of the solar cell 201, the positive metal terminal 271 and the negative metal terminal 272 are located on the left and right sides of the solar cell 201 (with the direction facing the observer as the front side). This can avoid local shading of the sunlight shining down from the top and improve the accuracy of solar orientation detection.

[0059] refer to Figure 10The present invention also illustrates a concentrated photovoltaic system, including a concentrated photovoltaic module 20, a dual-axis adjustment bracket 30, a control system 40, and a solar position tracking device 10 as described in the foregoing embodiments. The concentrated photovoltaic module 40 is mounted on the dual-axis adjustment bracket 30, and the solar position tracking device 10 is mounted on one side of the concentrated photovoltaic module 20. The solar position tracking device 10 maintains a preset distance from the edge of the concentrated photovoltaic module 20, and the top surface of the solar position tracking device 10 is lower than the upper surface of the concentrated photovoltaic module 20. The top surface of the solar position tracking device 10 is parallel to the upper surface of the concentrated photovoltaic module 20. The dual-axis adjustment bracket 30 is connected to the control system 40, and the control system 40 is connected to the controller 300 of the solar position tracking device 10.

[0060] In this embodiment, both the concentrating photovoltaic module 20 and the dual-axis adjustment bracket 30 are from the prior art. The dual-axis adjustment bracket 30 adopts a dual-degree-of-freedom structure of azimuth angle and elevation angle, which can realize the angle adjustment in the horizontal and vertical directions. This embodiment of the present invention will not elaborate on this.

[0061] In one specific embodiment, the solar position tracking device 10 is mounted on a dual-axis adjustment bracket 30, which is made of metal. The solar position tracking device 10 is directly attached to the dual-axis adjustment bracket 30 via a magnetic suction part 400 at the bottom, and the top surface of the solar position tracking device 10 is parallel to the upper surface of the concentrating photovoltaic module 20.

[0062] The preset distance between the solar tracking device 10 and the edge of the concentrating photovoltaic module 40 can be set, for example, 50mm, to ensure that the device does not block the focusing light path of the Fresnel lens. The top surface of the solar tracking device 10 is lower than the upper surface of the concentrating photovoltaic module 40, and the vertical distance between the two can be set, for example, 20mm, to avoid the concentrating light spot being blocked due to the device protruding.

[0063] When the sun shifts in a certain direction, the current of the solar cell module in the corresponding position increases. The controller 300 determines that the upper surface of the current concentrating photovoltaic module 20 is not facing the sun based on the current difference between different surfaces. It sends an adjustment signal to the control system 40, which sends an angle adjustment signal to the dual-axis adjustment bracket 30, driving the dual-axis adjustment bracket 30 to adjust the angle of the current concentrating photovoltaic module 20 until the current density of the left solar cell module 240 and the right solar cell module 250 are basically equal, the current density of the front solar cell module 220 and the rear solar cell module 230 is basically equal, and the current density of the top solar cell module 210 is much greater than that of the other surfaces. At this time, the upper surface of the current concentrating photovoltaic module 20 faces the sun, achieving the optimal working position of the current concentrating photovoltaic module 20.

[0064] The concentrated photovoltaic system of this embodiment directly acquires the current density difference signal through the multi-faceted distributed solar cell modules 200. It has strong anti-environment interference capability. Even if it encounters short-term cloud cover, the current difference of each module can still reflect the relative position of the sun. Moreover, the hardware structure is simple, low-cost and highly reliable. All components work together to achieve accurate tracking of the sun's position by the concentrated photovoltaic system, ensuring that the concentrated light spot stably covers the effective light-receiving surface of the battery and improves the efficiency of solar energy utilization.

[0065] Obviously, the embodiments described above are merely some embodiments of the present invention, not all embodiments. The accompanying drawings show preferred embodiments of the present invention, but do not limit the patent scope of the present invention. The present invention can be implemented in many different forms; rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this invention.

Claims

1. A solar position tracking device, characterized in that, The device includes a tracking device body, several solar cell modules, and a controller. The solar cell modules are respectively disposed on the top, front, back, left, and right sides of the tracking device body. The photosensitive surface of each solar cell module faces the outside of the tracking device body. The front, back, left, and right solar cell modules are all perpendicular to the top solar cell module. The front solar cell module is parallel to and opposite to the back solar cell module. The left solar cell module is parallel to and opposite to the right solar cell module. The front solar cell module is perpendicular to the left solar cell module. Each solar cell module is connected to the controller.

2. The solar position tracking device as described in claim 1, characterized in that, The main body of the tracking device is a regular hexahedron.

3. The solar position tracking device as described in claim 2, characterized in that, Each of the solar cell modules is located at the center of the corresponding mounting surface of the tracking device body.

4. The solar position tracking device as described in claim 1, characterized in that, The main body of the tracking device is made of glass.

5. The solar position tracking device as described in claim 1, characterized in that, The bottom surface of the tracking device body is provided with a magnetic suction part.

6. The solar position tracking device as described in claim 5, characterized in that, The magnetic attraction part includes a plurality of magnets, and the bottom surface of the tracking device body is machined with a plurality of countersunk holes. Each magnet is embedded in the corresponding countersunk hole, and the countersunk hole and the magnet are glued and fixed together.

7. The solar position tracking device as described in claim 6, characterized in that, The depth of the countersunk hole is greater than the height of the magnet. After the countersunk hole and the magnet are glued together, the outer surface of the magnet is flush with the bottom surface of the tracking device body.

8. The solar position tracking device as described in claim 1, characterized in that, Each of the solar cell modules is connected to the controller via leads. Each solar cell module includes a solar cell, a base plate, and metal terminals. The solar cell is disposed on the base plate, and the metal terminals are fixed on the base plate. The positive and negative terminals of the solar cell are electrically connected to a metal terminal, respectively. One end of the lead is welded to the metal terminal, and the other end of the lead is connected to the controller.

9. The solar position tracking device as described in claim 1, characterized in that, The metal terminal has a hollow structure and includes a positive metal terminal and a negative metal terminal, which are respectively located on both sides of the solar cell.

10. A concentrated photovoltaic system, characterized in that, The device includes a concentrated photovoltaic (PV) module, a dual-axis adjustment bracket, a control system, and a solar position tracking device as described in any one of claims 1-9. The PV module is mounted on the dual-axis adjustment bracket, the solar position tracking device is mounted on one side of the PV module, the solar position tracking device maintains a preset distance from the edge of the PV module, and the top surface of the solar position tracking device is lower than the upper surface of the PV module and parallel to the upper surface of the PV module. The dual-axis adjustment bracket is connected to the control system, and the control system is connected to the controller of the solar position tracking device.

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