A photovoltaic tracking system controller power supply assist device

Abstract

This utility model belongs to the field of solar energy equipment technology and discloses a power supply auxiliary device for a photovoltaic tracking system controller, including a current detection box. The current detection box contains an integrated circuit module, which includes a high-voltage board and a low-voltage board. The high-voltage board is connected to a photovoltaic panel current output harness, a photovoltaic panel current input harness, and a tracking system power supply harness. The low-voltage board is connected to a tracking system signal harness. The current detection box includes a box body and a cover that are snapped together. A PCB constraint component is installed inside the box body, and a PCB anti-tilt component is installed on the cover. This utility model integrates power supply and current monitoring functions, utilizes a photovoltaic high-voltage self-driven tracking system controller, and provides real-time feedback of power generation current data to optimize tracking accuracy, significantly improving power generation efficiency and reducing costs.

Description

Technical Field

[0001] This utility model relates to the field of solar energy equipment technology, and in particular to a power supply auxiliary device for a photovoltaic tracking system controller. Background Technology

[0002] In solar photovoltaic tracking power generation systems, the tracking system controller is key to improving the overall performance of the photovoltaic system by increasing power generation and ensuring a stable power supply.

[0003] Chinese invention patent application number 202311093587.0 proposes a dual-axis tracking control method and system for photovoltaic brackets. The controller in this tracking system also controls the operation of the photovoltaic tracking based on astronomical algorithms. However, when faced with situations such as terrain tilt, installation deviation, and terrain subsidence, there is often a certain deviation between the angle calculated by the astronomical algorithm and the actual operating angle of the bracket. This results in the photovoltaic panel's power generation not reaching the design target. Moreover, when faced with external shading, the power generation of the photovoltaic panel will also decrease significantly. Utility Model Content

[0004] The main technical problem to be solved by this utility model is to provide a power supply auxiliary device for a photovoltaic tracking system controller. By integrating power supply and current monitoring functions, it utilizes the photovoltaic high-voltage self-driven tracking system controller and provides real-time feedback of power generation current data to optimize tracking accuracy, thereby significantly improving power generation efficiency and reducing cost.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A power supply auxiliary device for a photovoltaic tracking system controller includes a current detection box, which contains an integrated circuit module. The integrated circuit module includes a high-voltage board and a low-voltage board. The high-voltage board is connected to a photovoltaic panel current output harness, a photovoltaic panel current input harness, and a tracking system power supply harness. The low-voltage board is connected to a tracking system signal harness.

[0007] The current detection box includes a box body and a box cover that are fixed together by snaps. The box body is equipped with a PCB constraint component, and the box cover is equipped with a PCB anti-tilt component.

[0008] The following are further optimizations of the above technical solution by this utility model:

[0009] The low-voltage board has three slots arranged side by side, and the high-voltage board has three plugs fixed in place, each plug being inserted into and fixed in a slot.

[0010] Further optimization: The high-voltage board is provided with current output vias, current input vias, and power supply harness vias. One end of the photovoltaic panel current output harness is connected to the current output via, one end of the photovoltaic panel current input harness is connected to the current input via, and one end of the tracking system power supply harness is connected to the power supply harness via. The other ends of the photovoltaic panel current output harness, photovoltaic panel current input harness, and tracking system power supply harness all pass through and extend out of the side wall of the current detection box.

[0011] Further optimization: One end of the tracking system signal harness is plugged into and installed on the low-voltage board via a connector terminal, and the other end of the tracking system signal harness passes through and extends out of the side wall of the current detection box.

[0012] Further optimization: A current detection module is installed on the high-voltage board. The current detection module is connected in series between the current output via and the current input via, and communicates with the microcontroller on the low-voltage board.

[0013] Further optimization: The PCB constraint assembly includes four constraint corner posts fixed to the inner wall of the box. The positions of the constraint corner posts are adapted to the positions of the four corner points of the low-voltage board. The inner sides of the four constraint corner posts form a low-voltage board constraint area. The low-voltage board is placed inside the low-voltage board constraint area and all four corner points are tightly attached to the inner wall of the constraint corner posts.

[0014] Further optimization: The PCB anti-tilt assembly includes an anti-tilt post fixed to the inner wall of the cover. The anti-tilt post is located outside the low-voltage board constraint area and abuts against the side wall of the high-voltage board.

[0015] Further optimization: A glue-filling port is provided on the top wall of the box.

[0016] The present invention adopts the above technical solution and has the following beneficial effects:

[0017] 1. This utility model adopts the above-mentioned technical solution, which is ingeniously conceived and reasonably structured. It integrates the stable power supply and current monitoring functions of the tracking system controller. The high-performance integrated circuit module inside the current detection box collects the information characteristics of the photovoltaic panel's power generation current and processes the information into a differential signal, which improves the long-distance transmission capability. It is then transmitted to the tracking system controller through the tracking system signal harness, enabling the tracking system controller to further optimize the tracking angle based on the current characteristic information on the basis of astronomical algorithms, thereby improving the power generation efficiency of the photovoltaic panel.

[0018] 2. This utility model utilizes the high voltage generated on the photovoltaic panel to drive the tracking system controller, thereby achieving a stable and reliable power supply to the tracking system controller. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of the current detection box in an embodiment of this utility model;

[0022] Figure 3 for Figure 2 A diagram showing the view from the right.

[0023] Figure 4 for Figure 3 Schematic sectional view along the middle AA direction;

[0024] Figure 5 for Figure 3 Cross-sectional view along the middle BB direction;

[0025] Figure 6 This is a schematic diagram of the box body in an embodiment of the present utility model;

[0026] Figure 7 This is a schematic diagram of the box lid structure in an embodiment of the present utility model;

[0027] Figure 8 This is a schematic diagram of the integrated circuit module in an embodiment of the present invention;

[0028] Figure 9 This is a schematic diagram of the high-voltage plate in an embodiment of the present invention;

[0029] Figure 10 This is a schematic diagram of the low-pressure plate in an embodiment of the present invention;

[0030] Figure 11 This is a schematic diagram illustrating the connection principle between an embodiment of the present invention and a photovoltaic tracking system.

[0031] In the diagram: 1. Current detection box; 101. Box body; 102. Box cover; 103. Constraint corner post; 104. Anti-tilt post; 105. Glue inlet; 106. Hook; 107. Slot; 108. Output harness opening; 109. Input harness opening; 110. Power supply harness opening; 111. Signal harness opening; 2. High voltage board; 201. Current output via; 202. Current input via; 203. Power supply harness via; 204. Current detection module; 205. Insert block; 3. Low-voltage board; 301. Slot; 302. Communication pad; 303. Low-voltage power supply negative pad; 304. Low-voltage power supply positive pad; 304. Microcontroller; 4. Photovoltaic panel current output harness; 5. Photovoltaic panel current input harness; 6. Tracking system power supply harness; 7. Tracking system signal harness; 701. Connecting terminal; 8. Tracking system controller; 9. Photovoltaic panel. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] like Figures 1-11 As shown in the figure, a power supply auxiliary device for a photovoltaic tracking system controller includes a current detection box 1, which contains an integrated circuit module. The integrated circuit module includes a high-voltage board 2 and a low-voltage board 3.

[0034] In this embodiment, a segmented design of high-voltage plate 2 and low-voltage plate 3 is adopted, which increases the distance between the high-voltage part and the low-voltage part, realizes the physical isolation between the high-voltage part and the low-voltage part, and improves the reliability and stability of the equipment.

[0035] The high-voltage board 2 is connected to the photovoltaic panel current output harness 4, the photovoltaic panel current input harness 5, and the tracking system power supply harness 6, while the low-voltage board 3 is connected to the tracking system signal harness 7.

[0036] Compared with traditional photovoltaic tracking systems, this invention solves the problems of limited power generation of photovoltaic panel 9 and power supply of tracking system controller 8 in the prior art, and realizes the purpose of using photovoltaic panel 9 to power tracking system controller 8.

[0037] In this embodiment, the end of the photovoltaic panel current output harness 4 is equipped with an MC4 male connector (not shown in the figure).

[0038] The end of the photovoltaic panel current input harness 5 is equipped with an MC4 female terminal (not shown in the figure).

[0039] The end of the tracking system signal harness 7 is fitted with a 4-pin aviation connector (not shown in the figure).

[0040] Therefore, the assembly of the photovoltaic panel current output harness 4, the photovoltaic panel current input harness 5, the tracking system power supply harness 6, and the tracking system signal harness 7 only requires plugging and unplugging a few plugs to achieve rapid replacement of this utility model, thereby greatly improving the assembly efficiency of the auxiliary device and reducing the maintenance cost of the equipment and labor cost.

[0041] Moreover, the assembly of the photovoltaic panel current output harness 4, the photovoltaic panel current input harness 5, the tracking system power supply harness 6, and the tracking system signal harness 7 only requires plugging and unplugging a few plugs, which enables the quick replacement of this utility model and reduces the maintenance cost of the equipment.

[0042] The structures of the photovoltaic panel current output harness 4, the photovoltaic panel current input harness 5, the tracking system power supply harness 6, and the tracking system signal harness 7, as well as the MC4 terminal, aviation plug, and other plug-in terminals, are all existing technologies and are well known to those skilled in the art, and will not be described in detail here.

[0043] In this embodiment, both the tracking system power supply harness 6 and the tracking system signal harness 7 are connected to the tracking system controller 8.

[0044] The tracking system signal harness 7 has four core wires, two of which are low-voltage power lines, enabling the tracking system controller 8 to supply low-voltage power to this invention. Thus, the tracking system controller 8 and this invention supply power to each other, reducing the level conversion circuit, lowering production costs, and achieving miniaturization of this invention.

[0045] The other two core wires inside the tracking system signal harness 7 transmit the real-time current information of the photovoltaic panel 9 collected by this invention to the tracking system controller 8 through differential communication.

[0046] Preferably, the current detection box 1 includes a box body 101 and a box cover 102 that are snapped together. The box body 101 is provided with a PCB constraint component, and the box cover 102 is provided with a PCB anti-tilt component.

[0047] like Figures 5-7 As shown, several pairs of hooks 106 are fixed inside the box cover 102, and several slots 107 that are adapted to the hooks 106 are provided on the box body 101.

[0048] During assembly, the hook 106 undergoes elastic deformation under external pressure. After passing the critical point of the slot 107, it returns to its original shape and locks the box body 101 and the box cover 102 through interference fit or inverted structure.

[0049] The strong clamping force and tight connection between the hook 106 and the slot 107 ensure that the box body 101 and the lid 102 are perfectly locked together without any gaps.

[0050] As can be seen from the above, the current detection box 1 is small in size, does not require additional screws for installation, and has low production cost.

[0051] like Figures 8-10 As shown, the low-pressure plate 3 has three slots 301 arranged side by side, and the high-pressure plate 2 has three plugs 205 fixed on it. Each plug 205 is inserted and fixed in a slot 301.

[0052] In this embodiment, each plug 205 and slot 301 is fixed by soldering through pads. The three pads are communication pad 302, low voltage power supply negative pad 303 and low voltage power supply positive pad 304.

[0053] like Figure 1 , Figures 8-10 As shown in the figure, the high-voltage board 2 is provided with a current output via 201, a current input via 202 and a power supply harness via 203. One end of the photovoltaic panel current output harness 4 is connected to the current output via 201, one end of the photovoltaic panel current input harness 5 is connected to the current input via 202, and one end of the tracking system power supply harness 6 is connected to the power supply harness via 203.

[0054] In this embodiment, the tracking system power supply harness 6 is configured to supply the high-voltage electricity generated by the photovoltaic panel 9 itself to the tracking system controller 8, providing it with power.

[0055] Preferably, the other ends of the photovoltaic panel current output harness 4, the photovoltaic panel current input harness 5, and the tracking system power supply harness 6 all pass through and extend out of the side wall of the current detection box 1.

[0056] In this embodiment, the photovoltaic panel current output harness 4 is soldered to the current output via 201, the photovoltaic panel current input harness 5 is soldered to the current input via 202, and the tracking system power supply harness 6 is soldered to the power supply harness via 203.

[0057] The photovoltaic panel current output harness 4, photovoltaic panel current input harness 5, and tracking system power supply harness 6 are all connected to the high voltage board 2 using a process of inserting through holes and then welding, which ensures the connection strength for high current carrying capacity and improves the tensile strength of the equipment in this utility model.

[0058] Preferably, one end of the tracking system signal harness 7 is plugged into the low-voltage board 3 via a plug-in terminal 701, and the other end of the tracking system signal harness 7 passes through and extends out of the side wall of the current detection box 1.

[0059] In this embodiment, the tracking system signal harness 7 is interconnected with the low-voltage board 3 via plug terminals 701 (e.g., XHB plugs and XHB sockets).

[0060] like Figures 2-7 As shown, the left and right sides of the current detection box 1 are respectively provided with an output wire harness opening 108 and an input wire harness opening 109, and the lower side of the current detection box 1 is provided with a power supply wire harness opening 110 and a signal wire harness opening 111.

[0061] Therefore, the photovoltaic panel current output harness 4 is led out from the current detection box 1 through the output harness opening 108, the photovoltaic panel current input harness 5 is led out from the current detection box 1 through the input harness opening 109, and the tracking system power supply harness 6 is led out from the current detection box 1 through the power supply harness opening 110.

[0062] In this embodiment, the photovoltaic panel current output harness 4 and photovoltaic panel current input harness 5, which are led out from both ends of the current detection box 1, are connected in series between the photovoltaic strings, and the tracking system power supply harness 6, which is led out from the lower end, supplies power to the tracking system controller, thus achieving the effect of three-way connection.

[0063] In this embodiment, the tracking system signal harness 7 is led out from the current detection box 1 through the signal harness opening 111.

[0064] In this embodiment, waterproof rubber rings (not shown in the figure) are provided at the connection points of the photovoltaic panel current output harness 4, the photovoltaic panel current input harness 5, the tracking system power supply harness 6, and the tracking system signal harness 7 with the housing 101. This not only increases the airtightness of the current detection box 1 and the bending resistance of the harness, but also ensures that the glue will not leak out during the potting process.

[0065] like Figure 8 and Figure 9 As shown in the figure, a current detection module 204 is installed on the high voltage board 2, and the current detection module 204 is connected in series between the current output via 201 and the current input via 202.

[0066] In this embodiment, the current detection module 204 can be a commercially available model, such as the Hall effect-based linear current sensor integrated circuit ACS712 from the American brand Egoro.

[0067] like Figures 8-10As shown, the current detection module 204 is connected to the microcontroller 304 on the low-voltage board 3 via the communication pad 302. The microcontroller 304 obtains the real-time data of the current generated by the photovoltaic panel 9 through data processing, and further processes it into a differential signal before sending it to the tracking system controller 8.

[0068] In this embodiment, the microcontroller 304 can be a commercially available model, such as the STC8G microcontroller provided by Jiangsu Guoxin Technology Co., Ltd.

[0069] In this embodiment, the current detection module 204 senses the magnetic field signal generated by the current flowing through the target area, outputs a voltage signal proportional to the magnitude of the current, and establishes a communication connection with the microcontroller 304. The microcontroller 304 performs analog-to-digital conversion on the voltage signal and, in conjunction with the internal logic operations of the microcontroller, deduces the actual current value.

[0070] This invention utilizes a high-precision current detection module 204 and a microcontroller 304, along with advanced algorithms in the program, to quickly and accurately feed back the current characteristic data of the photovoltaic panel 9 to the tracking system controller 8.

[0071] Furthermore, the communication between the microcontroller 304 and the tracking system controller 8 has strong anti-interference performance and built-in verification capability, ensuring that the data is transmitted to the tracking system controller 8 in real time without error.

[0072] This enables the tracking system controller 8 to determine the operating status of the photovoltaic system based on the current characteristics and respond accordingly, thereby effectively increasing the power generation of the photovoltaic panel 9.

[0073] Compared to traditional photovoltaic systems, this invention increases the power generation of the photovoltaic panel 9 by 8%-15%.

[0074] Moreover, this invention reduces the impact of external shading on the power generation efficiency of the photovoltaic panel 9 to a certain extent.

[0075] Furthermore, even if the current detection function of this invention malfunctions, it can still power the tracking system controller 8, and the photovoltaic system can still operate based on the astronomical algorithm.

[0076] like Figure 4 and Figure 6 As shown, the PCB constraint assembly includes four constraint corner posts 103 fixed to the inner wall of the housing 101. The positions of the constraint corner posts 103 are adapted to the positions of the four corner points of the low-voltage plate 3. The inner sides of the four constraint corner posts 103 form a low-voltage plate constraint area. The low-voltage plate 3 is placed inside the low-voltage plate constraint area and all four corner points are tightly attached to the inner wall of the constraint corner posts 103.

[0077] like Figure 5 and Figure 7 As shown, the PCB anti-tilt assembly includes an anti-tilt post 104 fixed to the inner wall of the cover 102. The anti-tilt post 104 is located outside the low-voltage board constraint area and abuts against the side wall of the high-voltage board 2.

[0078] In this embodiment, the PCB anti-tilt component and the PCB constraint component ensure the standardized fixation of the integrated circuit module in position before potting, thereby preventing the integrated circuit module from being exposed after potting due to tilting, and thus enhancing the consistency and stability of the production of this utility model.

[0079] like Figure 2 and Figure 5 As shown, a glue-filling port 105 is provided on the top wall of the box body 101.

[0080] In this embodiment, glue is injected into the current detection box 1 through the glue injection port 105, which further increases the tensile strength of the wire harness.

[0081] At the same time, the waterproof performance of the current detection box 1 reaches IP68, which effectively prevents rainwater, fog, sand and dust from entering the interior of the current detection box 1, thereby avoiding damage or short circuit of the internal components of the current detection box 1.

[0082] In this embodiment, the adhesive used is a high-pressure-resistant and high-thermal-conductivity potting compound with a pressure resistance rating of 2 WV / mmm, which enhances the pressure resistance of this invention and effectively prevents leakage and equipment damage. In addition, the high thermal conductivity adhesive can dissipate the heat generated inside the current detection box 1 in a timely manner, resulting in extremely high heat dissipation efficiency.

[0083] Therefore, this utility model has excellent rainproof and dustproof capabilities, strong insulation and heat dissipation, and achieves long-life operation, enabling the photovoltaic system to meet the design requirement of a 25-year lifespan.

[0084] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic tracking system controller power supply auxiliary device comprising a current detection box (1), characterized in that, The current detection box (1) is equipped with an integrated circuit module, which includes a high voltage board (2) and a low voltage board (3). The high voltage board (2) is connected to a photovoltaic panel current output harness (4), a photovoltaic panel current input harness (5), and a tracking system power supply harness (6). The low voltage board (3) is connected to a tracking system signal harness (7). The current detection box (1) includes a box body (101) and a box cover (102) that are fixed together by snaps. The box body (101) is provided with a PCB constraint component, and the box cover (102) is provided with a PCB anti-tilt component.

2. A photovoltaic tracking system controller power supply assist device according to claim 1, wherein, The low-pressure plate (3) has three slots (301) arranged side by side, and the high-pressure plate (2) has three plugs (205) fixed on it. Each plug (205) is inserted into and fixed in a slot (301).

3. A photovoltaic tracking system controller power supply assist device according to claim 1, wherein, The high-voltage board (2) is provided with a current output via (201), a current input via (202) and a power supply harness via (203). One end of the photovoltaic panel current output harness (4) is connected to the current output via (201), one end of the photovoltaic panel current input harness (5) is connected to the current input via (202), and one end of the tracking system power supply harness (6) is connected to the power supply harness via (203). The other ends of the photovoltaic panel current output harness (4), the photovoltaic panel current input harness (5) and the tracking system power supply harness (6) all pass through and extend out of the side wall of the current detection box (1).

4. A photovoltaic tracking system controller power supply assist device according to claim 1, wherein, One end of the tracking system signal harness (7) is plugged into the low-voltage board (3) via a plug-in terminal (701), and the other end of the tracking system signal harness (7) passes through and extends out of the side wall of the current detection box (1).

5. A photovoltaic tracking system controller power supply assist device according to claim 3, wherein, A current detection module (204) is installed on the high voltage board (2). The current detection module (204) is connected in series between the current output via (201) and the current input via (202), and is connected in communication with the microcontroller (304) on the low voltage board (3).

6. The power supply auxiliary device for a photovoltaic tracking system controller according to claim 1, characterized in that, The PCB constraint assembly includes four constraint corner posts (103) fixed to the inner wall of the box (101). The positions of the constraint corner posts (103) are adapted to the positions of the four corner points of the low-voltage plate (3). The inner side of the four constraint corner posts (103) forms a low-voltage plate constraint area. The low-voltage plate (3) is placed inside the low-voltage plate constraint area and the four corner points are tightly attached to the inner wall of the constraint corner posts (103).

7. The photovoltaic tracking system controller power supply auxiliary device according to claim 6, characterized in that, The PCB anti-tilt assembly includes an anti-tilt column (104) fixed to the inner wall of the cover (102). The anti-tilt column (104) is located outside the low-voltage plate constraint area and abuts against the side wall of the high-voltage plate (2).

8. The photovoltaic tracking system controller power supply auxiliary device according to claim 1, characterized in that, The top wall of the box (101) is provided with a glue-filling port (105).

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