A self-powered photovoltaic system and method for automatically adjusting anti-shading

Abstract

The application discloses a self-powered automatic anti-shading photovoltaic system and method, and relates to the field of photovoltaic systems.The self-powered automatic anti-shading photovoltaic system comprises a support, a main photovoltaic assembly hinged to the top end of the support, and upper and lower light collection components respectively mounted on the upper and lower edges of the main photovoltaic assembly; and a feedback adjustment assembly configured to control the operation of the upper and lower adjustment arms according to the light collection areas of the upper and lower light collection components, so as to reduce or eliminate the difference between the light collection areas.The application utilizes the upper and lower light collection components to collect light, and when the light collection area of the upper light collection component is larger than that of the lower light collection component, it indicates that the lower light collection component has a shadow, and then the feedback adjustment assembly controls the operation of the upper and lower adjustment arms according to the light collection areas of the upper and lower light collection components, so as to reduce or eliminate the difference between the light collection areas and improve the power generation efficiency.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic equipment, and in particular to a self-powered, automatically adjustable anti-shading photovoltaic system and method. Background Technology

[0002] With social development, ecological and environmental issues have attracted increasing attention. Given the scarcity of non-renewable resources and the deteriorating ecological environment, clean energy is playing a crucial role in energy utilization and ecological protection. Solar energy, as a convenient, abundant, and widely distributed new energy source, is experiencing rapid market expansion, with photovoltaic power plants leading the way, and actual installed capacity increasing year by year. However, problems hindering the development of photovoltaics are also emerging, with shading being the most prominent.

[0003] In the design of ground-mounted solar photovoltaic (PV) power generation systems, irradiance calculation is a crucial step. The output power of PV modules is directly related to the intensity of sunlight they receive. Actual PV power plants employ various operating modes to maximize the radiation received by the PV arrays, thereby achieving higher annual power generation. Generally, the irradiance received is greatest when the PV module surface is perpendicular to the incident sunlight; therefore, PV modules are installed at an angle as perpendicular to the sunlight as possible. Existing tracking PV mounting systems can maintain the perpendicularity of the PV module surface to direct sunlight at all times, but they overlook a problem: because the spacing between PV arrays in a PV power plant is fixed and cannot be adjusted, when the PV module surface is perpendicular to the sunlight, it can cause shading for all rows except the first row. This reduces the irradiance received by the rear rows of PV arrays, significantly impacting the output of the PV power plant. Therefore, improvements are necessary to address this issue. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a self-powered, automatically adjustable anti-shading photovoltaic system.

[0005] According to a first aspect of the present invention, a self-powered, automatically adjustable, anti-shading photovoltaic system includes: a support frame; a main photovoltaic module hinged to the top of the support frame, with an upper light-collecting element and a lower light-collecting element respectively mounted on its upper and lower edges; an upper adjusting arm, one end of which is movably connected to the upper end of the main photovoltaic module and the other end of which is movably connected to the support frame, the two ends of the upper adjusting arm being able to extend and retract relative to each other; a lower adjusting arm, one end of which is movably connected to the lower end of the main photovoltaic module and the other end of which is movably connected to the support frame, the two ends of the lower adjusting arm being able to extend and retract relative to each other; and a feedback adjustment component configured to control the operation of the upper and lower adjusting arms according to the illumination area of ​​the upper and lower light-collecting elements, so as to reduce or eliminate the difference in illumination area between the upper and lower light-collecting elements.

[0006] According to an embodiment of the present invention, a self-powered, automatically adjustable, anti-shading photovoltaic system has at least the following beneficial effects: Light is collected using an upper light-collecting component and a lower light-collecting component. When the illuminated area of ​​the upper light-collecting component is greater than that of the lower light-collecting component, it indicates that the lower light-collecting component is casting a shadow. Subsequently, a feedback adjustment component controls the operation of the upper and lower adjustment arms based on the illuminated areas of the upper and lower light-collecting components to reduce or eliminate the difference in illuminated areas between them, thereby reducing the impact of shadows and improving power generation efficiency.

[0007] In some embodiments of the present invention, the feedback regulation component includes an upper auxiliary photovoltaic inverter, an upper regulating arm controller, a lower auxiliary photovoltaic inverter, and a lower regulating arm controller. The upper and lower light-collecting devices are both photovoltaic modules. The upper and lower auxiliary photovoltaic inverters are respectively connected to the upper and lower light-collecting devices and respectively transmit the generated current to the upper regulating arm controller and the lower regulating arm controller. The upper regulating arm controller and the lower regulating arm controller provide the upper and lower regulating arms with contraction forces at both ends according to the current magnitude.

[0008] In some embodiments of the present invention, both the upper adjusting arm controller and the lower adjusting arm controller are electric suction devices; both the upper adjusting arm and the lower adjusting arm are pneumatic telescopic arms.

[0009] In some embodiments of the present invention, a main purlin is fixedly installed on the bottom surface of the main photovoltaic module, the middle part of the main purlin is hinged to the upper end of the bracket through a first hinge, and the upper and lower ends of the main purlin are respectively movably connected to the upper adjustment arm and the lower adjustment arm.

[0010] In some embodiments of the present invention, a connecting square steel is fixed to the upper surface of the main purlin, the connecting square steel is fixed to the main purlin by bolts, the lower end of the bolt passes through the main purlin and is connected to a first ball hinge, and the upper adjusting arm is ball-jointed with the main purlin through the first ball hinge.

[0011] In some embodiments of the present invention, the upper end of the connecting square steel has a notch, a connecting plate is embedded in the connecting square steel, the width of the connecting plate is greater than the notch, a screw is inserted through the main photovoltaic module, and the lower end of the screw passes through the main photovoltaic module and is threadedly connected to the connecting plate.

[0012] In some embodiments of the present invention, the lower end of the upper adjusting arm is ball-connected to the bracket via a second ball hinge.

[0013] In some embodiments of the present invention, a first auxiliary strip is installed on the left or right edge of the bottom surface of the main photovoltaic module, and the upper light-collecting component and the lower light-collecting component are respectively fixedly installed on the upper and lower ends of the first auxiliary strip.

[0014] In some embodiments of the present invention, a second auxiliary purlin is installed on the side of the main photovoltaic module away from the first auxiliary purlin, and an auxiliary support frame is hinged to the middle of both the first and second auxiliary purlins.

[0015] According to a second aspect of the present invention, a self-powered automatic anti-shading adjustment method includes the following steps: acquiring the current magnitude generated by an upper light-collecting device and a lower light-collecting device, wherein both the upper and lower light-collecting devices are photovoltaic modules; determining the current magnitude generated by the upper and lower light-collecting devices; if the current magnitudes generated by the upper and lower light-collecting devices are the same, then the current generated by the upper and lower light-collecting devices is transmitted outward; if the current generated by the upper light-collecting device is greater than the current generated by the lower light-collecting device, then the current transmission from the upper and lower light-collecting devices is cut off, and the current generated by the upper and lower light-collecting devices is respectively transmitted to the upper adjustment of the feedback adjustment component. The upper and lower regulating arm controllers provide contraction forces at both ends of the upper and lower regulating arms according to the magnitude of the current. The contraction force on the upper regulating arm is greater than that on the lower regulating arm. After resisting the contraction force of the lower regulating arm, the upper regulating arm can drive the main photovoltaic module to rotate around the hinge, causing the upper end of the main photovoltaic module to descend and the lower end to rise until the current generated by the upper light-collecting device is equal to that generated by the lower light-collecting device. When the current generated by the upper light-collecting device is equal to that generated by the lower light-collecting device, the connection between the upper and lower light-collecting devices and the feedback regulating component is cut off, and the path for the current generated by the upper and lower light-collecting devices to be transmitted outward is opened.

[0016] According to an embodiment of the present invention, a self-powered automatic anti-shading method has at least the following beneficial effects: it can effectively reduce the impact of shading on power generation efficiency, and in the absence of shading, the upper and lower light-collecting components can transmit current outward, thereby improving power generation efficiency and increasing the power generation per unit area.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0019] Figure 1 This is a schematic diagram of an embodiment of a self-powered, automatically adjustable anti-shading photovoltaic system according to the present invention;

[0020] Figure 2 for Figure 1 Enlarged view of point A;

[0021] Figure 3 for Figure 1 Enlarged view of point B;

[0022] Figure 4 for Figure 2 Enlarged view at point C;

[0023] Figure 5 A schematic diagram of the planar structure of the main photovoltaic module;

[0024] Figure 6 for Figure 1 The right view. Detailed Implementation

[0025] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0026] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0027] In the description of this invention, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features or their sequential relationship.

[0028] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0029] Reference Figures 1 to 6 As shown, an embodiment of a self-powered, automatically adjustable, anti-shading photovoltaic system according to the present invention includes a support frame 100, a main photovoltaic module 200, an upper adjustment arm 300, a lower adjustment arm 400, and a feedback adjustment component 500.

[0030] The bottom of the bracket 100 is bolted to a reinforced concrete cage; the main photovoltaic module 200 is hinged to the top of the bracket 100, and the hinge axis is horizontal. An upper light-collecting element 210 and a lower light-collecting element 220 are respectively installed on the upper and lower edges of the main photovoltaic module 200. The lower edge of the lower light-collecting element 220 is flush with the lower edge of the main photovoltaic module 200. If there is a shadow on the lower part of the main photovoltaic module 200, the lower light-collecting element 220 will also be shadowed. The upper light-collecting element 210 and the lower light-collecting element 220 are of the same size.

[0031] One end of the upper adjusting arm 300 is movably connected to the upper end of the main photovoltaic module 200, and the other end is movably connected to the bracket 100. The two ends of the upper adjusting arm 300 can extend and retract relative to each other. One end of the lower adjusting arm 400 is movably connected to the lower end of the main photovoltaic module 200, and the other end is movably connected to the bracket 100. The two ends of the lower adjusting arm 400 can extend and retract relative to each other. The extension and retraction of the upper adjusting arm 300 and the lower adjusting arm 400 can push the main photovoltaic module 200 to rotate around the hinge point with the bracket 100.

[0032] The feedback adjustment component 500 is configured to control the operation of the upper adjustment arm 300 and the lower adjustment arm 400 according to the illumination area of ​​the upper illumination collector 210 and the lower illumination collector 220, so as to reduce or eliminate the difference in illumination area between the upper illumination collector 210 and the lower illumination collector 220.

[0033] This invention provides a self-powered, automatically adjustable, anti-shading photovoltaic system. It utilizes an upper light-collecting element 210 and a lower light-collecting element 220 to collect light. When the illuminated area of ​​the upper light-collecting element 210 is greater than that of the lower light-collecting element 220, it indicates that the lower light-collecting element 220 is casting a shadow. Subsequently, a feedback adjustment component 500 controls the operation of the upper adjustment arm 300 and the lower adjustment arm 400 based on the illuminated areas of the upper and lower light-collecting elements 210 and 220, thereby reducing or eliminating the shadow's influence and improving power generation efficiency.

[0034] Reference Figure 1 and Figure 2It is understood that, in some embodiments of the present invention, the feedback regulation component 500 includes an upper auxiliary photovoltaic inverter 510, an upper regulating arm controller 520, a lower auxiliary photovoltaic inverter 530, and a lower regulating arm controller 540. The upper light-collecting device 210 and the lower light-collecting device 220 are both photovoltaic modules. The upper auxiliary photovoltaic inverter 510 and the lower auxiliary photovoltaic inverter 530 are respectively connected to the upper light-collecting device 210 and the lower light-collecting device 220 and respectively transmit the generated current to the upper regulating arm controller 520 and the lower regulating arm controller 540. The upper regulating arm controller 520... The upper regulating arm 300 and lower regulating arm 400 are respectively supplied with contraction forces at both ends according to the current magnitude. When the lower light-collecting element 220 is in shadow, the current it generates is less than that of the upper light-collecting element 210. Therefore, the contraction force of the lower regulating arm 400 is less than that of the upper regulating arm 300. This allows the upper regulating arm 300 to counteract the effect of the lower regulating arm 400, thereby rotating the upper end of the main photovoltaic module 200 downward and lifting the lower end of the main photovoltaic module 200 to reduce the shadow until it disappears. That is, the torque caused by the contraction force of the upper regulating arm 300 is greater than that of the lower regulating arm 400. The upper light-collecting element 210 and lower light-collecting element 220 can transmit the generated current outward under normal power generation conditions. When there is a difference in the illumination area between the upper light-collecting element 210 and lower light-collecting element 220, the transmission of current outward stops, and the current is then transmitted to the upper regulating arm controller 520 and lower regulating arm controller 540.

[0035] It is understood that in some specific embodiments of the present invention, the upper adjusting arm controller 520 and the lower adjusting arm controller 540 are both electric suction devices; the upper adjusting arm 300 and the lower adjusting arm 400 are both pneumatic telescopic arms. The greater the current obtained by the upper adjusting arm controller 520 and the lower adjusting arm controller 540, the greater the negative pressure suction force is generated to push the two ends of the upper adjusting arm 300 and the lower adjusting arm 400 to retract relative to each other, so as to adjust the length of the upper adjusting arm 300 and the lower adjusting arm 400 themselves.

[0036] It is understood that, in some specific embodiments of the present invention, a main purlin 230 is fixedly installed on the bottom surface of the main photovoltaic module 200. The middle part of the main purlin 230 is hinged to the upper end of the bracket 100 via a first hinge 240. The upper and lower ends of the main purlin 230 are movably connected to the upper adjusting arm 300 and the lower adjusting arm 400, respectively. The main photovoltaic module 200 is a photovoltaic panel, which is inconvenient to directly connect with other components. The main purlin 230 serves as an extension structure of the main photovoltaic module 200, facilitating installation and connection with external structures. The bracket 100 includes a main rod 110 and a top rod 120. The top rod 120 is obliquely fixed on the main rod 110, and the first hinge 240 is connected to the top rod 120.

[0037] Reference Figure 3It is understood that, in some specific embodiments of the present invention, a connecting square steel 610 is fixed on the upper surface of the main purlin 230. The connecting square steel 610 is fixed to the main purlin 230 by bolts 650. The lower end of the bolts 650 passes through the main purlin 230 and is fitted with a nut to clamp the main purlin 230. The lower end of the bolts 650 is also connected to a first ball hinge 310. The upper adjusting arm 300 is ball-jointed with the main purlin 230 through the first ball hinge 310. Specifically, one end of the first ball hinge 310 is threaded to the lower end of the bolts 650, and the other end is provided with a ball for the upper adjusting arm 300 to ball-joint, thereby realizing the movable connection between the upper adjusting arm 300 and the main photovoltaic module 200, so that the extension and retraction movement of the upper adjusting arm 300 drives the main photovoltaic module 200 to rotate around the hinge, thereby eliminating shadows.

[0038] Reference Figure 4 It is understood that, in some specific embodiments of the present invention, the lower end of the upper adjusting arm 300 is ball-jointed to the bracket 100 via a second ball hinge 320. Specifically, the second ball hinge 320 is fixedly installed on the bracket 100, and a ball is provided at the end of the second ball hinge 320 away from the bracket 100 for the lower end of the upper adjusting arm 300 to ball-joint. Alternatively, the lower adjusting arm 400 can also ball-joint with the bracket 100 and the main purlin 230 in the above manner to ensure freedom of movement and enable linkage between mechanisms.

[0039] Reference Figure 3 It is understood that, in some specific embodiments of the present invention, the upper end of the connecting square steel 610 has a notch 611, and a connecting plate 630 is embedded within the connecting square steel 610. The width of the connecting plate 630 is greater than that of the notch 611. A screw 640 passes through the main photovoltaic module 200, and the lower end of the screw 640 passes through the main photovoltaic module 200 and is threadedly connected to the connecting plate 630. Tightening the screw 640 causes the connecting plate 630 and the main photovoltaic module 200 to clamp the structure on both sides of the upper notch 611 of the connecting square steel 610, thereby achieving the connection and fixation of the main photovoltaic module 200 and the connecting square steel 610. The main photovoltaic module 200, the main purlin 230, and the first ball hinge 310 are connected and fixed through the connecting square steel 610, optimizing the connection structure. Furthermore, the connecting plate 630 can move within the connecting square steel 610, facilitating alignment and installation with the screw 640 and reducing the difficulty of installation and connection. To avoid stress concentration, a pressure equalization plate 620 is provided on the upper surface of the main photovoltaic module 200, and screws 640 are inserted through the pressure equalization plate 620 and pressed tightly onto the pressure equalization plate 620.

[0040] It is understood that, in some specific embodiments of the present invention, a first auxiliary purlin 250 is installed on the left or right edge of the bottom surface of the main photovoltaic module 200, and the upper light-collecting component 210 and the lower light-collecting component 220 are respectively fixedly installed on the upper and lower ends of the first auxiliary purlin 250. The first auxiliary purlin 250 is fixed to the bottom surface of the main photovoltaic module 200 by bolts. The first auxiliary purlin 250 is used to install the upper light-collecting component 210 and the lower light-collecting component 220, providing them with a more convenient installation position.

[0041] It is understood that, in some specific embodiments of the present invention, a second auxiliary purlin 260 is installed on the side of the main photovoltaic module 200 away from the first auxiliary purlin 250, and an auxiliary support frame 261 is hinged to the middle of both the first auxiliary purlin 250 and the second auxiliary purlin 260. Specifically, the first auxiliary purlin 250 and the second auxiliary purlin 260 are respectively fixed to the left and right sides of the main photovoltaic module 200. The hinge axis between the first auxiliary purlin 250 and the auxiliary support frame 261, the hinge axis between the second auxiliary purlin 260 and the auxiliary support frame 261, and the hinge axis between the main purlin 230 and the bracket 100 are parallel and located on the same horizontal plane. The bottom of the auxiliary support frame 261 is also bolted to a reinforced concrete cage.

[0042] The present invention also provides a self-powered automatic adjustment method for anti-shading, comprising the following steps:

[0043] First, the magnitude of the current generated by the upper light-collecting device 210 and the lower light-collecting device 220 is obtained. The upper light-collecting device 210 and the lower light-collecting device 220 are both photovoltaic modules. The upper light-collecting device 210 and the lower light-collecting device 220 generate current through the operation of the upper auxiliary photovoltaic inverter 510 and the lower auxiliary photovoltaic inverter 530, respectively.

[0044] The magnitude of the current generated by the upper light acquisition device 210 and the lower light acquisition device 220 can be determined by collecting current information through a current sensor, which is then used by the control system to compare the current magnitudes.

[0045] If the current generated by the upper light-collecting element 210 and the lower light-collecting element 220 is the same, then the current generated by the upper light-collecting element 210 and the lower light-collecting element 220 is transmitted outward; if the current generated by the upper light-collecting element 210 is greater than the current generated by the lower light-collecting element 220, then the current transmitted outward by the upper light-collecting element 210 and the lower light-collecting element 220 is cut off, and the current generated by the upper light-collecting element 210 and the lower light-collecting element 220 is respectively transmitted to the upper regulating arm controller 520 of the feedback regulating component 500. The upper and lower adjusting arm controllers 520 and 540 respectively provide the upper adjusting arm 300 and the lower adjusting arm 400 with a contraction force at both ends according to the obtained current magnitude. The contraction force on the upper adjusting arm 300 is greater than that on the lower adjusting arm 400. After resisting the contraction force of the lower adjusting arm 400, the upper adjusting arm 300 can drive the main photovoltaic module 200 to rotate around the hinge, so that the upper end of the main photovoltaic module 200 descends and the lower end rises until the current generated by the upper light-collecting element 210 is equal to the current generated by the lower light-collecting element 220.

[0046] When the current generated by the upper light-collecting device 210 is equal to the current generated by the lower light-collecting device 220, the control system disconnects the connection between the upper light-collecting device 210, the lower light-collecting device 220 and the feedback adjustment component 500, and no longer provides power to the upper adjustment arm 300 and the lower adjustment arm 400. At the same time, the path for the current generated by the upper light-collecting device 210 and the lower light-collecting device 220 to be transmitted outward is opened to ensure power generation efficiency and avoid waste of the illuminated area.

[0047] This invention does not waste light-receiving area and does not require a complex control system. It utilizes the difference in current caused by the difference in light-receiving area between the upper and lower sections, resulting in a difference in torque. This torque difference drives the main photovoltaic module 200 to rotate, eliminating the difference and thus achieving the effect of eliminating shadows. In existing technologies, to achieve anti-shadowing, a photovoltaic tracking controller with an integrated MCU and detection sensors are typically used to monitor and adjust shadows. However, these sensors are prone to failure under harsh weather conditions, resulting in poor environmental adaptability. Compared to other existing technologies, this invention has a simpler structure, does not overly rely on sensors and complex control systems, and achieves automatic adjustment of the main photovoltaic module 200 with strong adaptability.

[0048] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A self-powered, automatically adjustable anti-shading photovoltaic system, characterized in that, include: Bracket (100); The main photovoltaic module (200) is hinged to the top of the bracket (100), and an upper light-collecting component (210) and a lower light-collecting component (220) are respectively installed on its upper and lower edges; the lower edge of the lower light-collecting component (220) is flush with the lower edge of the main photovoltaic module (200); The upper adjusting arm (300) is movably connected at one end to the upper end of the main photovoltaic module (200) and at the other end to the bracket (100). The two ends of the upper adjusting arm (300) can extend and retract relative to each other. The lower adjusting arm (400) is movably connected at one end to the lower end of the main photovoltaic module (200) and at the other end to the bracket (100). The two ends of the lower adjusting arm (400) can extend and retract relative to each other. The feedback adjustment component (500) is configured to control the operation of the upper adjustment arm (300) and the lower adjustment arm (400) according to the illumination area of ​​the upper illumination collector (210) and the lower illumination collector (220) to reduce or eliminate the difference in illumination area between the upper illumination collector (210) and the lower illumination collector (220); The feedback regulation component (500) includes an upper auxiliary photovoltaic inverter (510), an upper regulating arm controller (520), a lower auxiliary photovoltaic inverter (530), and a lower regulating arm controller (540). The upper light acquisition device (210) and the lower light acquisition device (220) are both photovoltaic modules. The upper auxiliary photovoltaic inverter (510) and the lower auxiliary photovoltaic inverter (530) are respectively connected to the upper light acquisition device (210) and the lower light acquisition device (220) and respectively transmit the generated current to the upper regulating arm controller (520) and the lower regulating arm controller (540). The upper regulating arm controller (520) and the lower regulating arm controller (540) provide the upper regulating arm (300) and the lower regulating arm (400) with contraction force at both ends according to the current magnitude. The contraction force on both ends of the upper adjustment arm (300) is greater than that on the lower adjustment arm (400). After resisting the contraction force of the lower adjustment arm (400), the upper adjustment arm (300) can drive the main photovoltaic module (200) to rotate around the hinge, so that the upper end of the main photovoltaic module (200) descends and the lower end rises until the current generated by the upper light-collecting device (210) is equal to the current generated by the lower light-collecting device (220). When the current generated by the upper light acquisition device (210) is equal to the current generated by the lower light acquisition device (220), the connection between the upper light acquisition device (210), the lower light acquisition device (220) and the feedback adjustment component (500) is cut off, and the path for the current generated by the upper light acquisition device (210) and the lower light acquisition device (220) to be transmitted outward is opened.

2. The self-powered, automatically adjustable, anti-shading photovoltaic system according to claim 1, characterized in that: The upper adjusting arm controller (520) and the lower adjusting arm controller (540) are both electric suction devices; the upper adjusting arm (300) and the lower adjusting arm (400) are both pneumatic telescopic arms.

3. The self-powered, automatically adjustable anti-shading photovoltaic system according to claim 1, characterized in that: The main photovoltaic module (200) has a main purlin (230) fixedly installed on its bottom surface. The middle part of the main purlin (230) is hinged to the upper end of the bracket (100) through a first hinge (240). The upper and lower ends of the main purlin (230) are movably connected to the upper adjustment arm (300) and the lower adjustment arm (400) respectively.

4. The self-powered, automatically adjustable anti-shading photovoltaic system according to claim 3, characterized in that: A connecting square steel (610) is fixed on the upper surface of the main purlin (230). The connecting square steel (610) is fixed to the main purlin (230) by bolts (650). The lower end of the bolts (650) passes through the main purlin (230) and is connected to a first ball hinge (310). The upper adjusting arm (300) is ball-connected to the main purlin (230) through the first ball hinge (310).

5. The self-powered, automatically adjustable anti-shading photovoltaic system according to claim 4, characterized in that: The upper end of the connecting square steel (610) has a notch (611), and a connecting plate (630) is embedded in the connecting square steel (610). The width of the connecting plate (630) is greater than that of the notch (611). A screw (640) is inserted through the main photovoltaic module (200). The lower end of the screw (640) passes through the main photovoltaic module (200) and is threadedly connected to the connecting plate (630).

6. The self-powered, automatically adjustable anti-shading photovoltaic system according to claim 4, characterized in that: The lower end of the upper adjusting arm (300) is ball-connected to the bracket (100) via a second ball hinge (320).

7. The self-powered, automatically adjustable anti-shading photovoltaic system according to claim 1, characterized in that: The main photovoltaic module (200) has a first auxiliary strip (250) installed on the left or right edge of its bottom surface. The upper light-collecting component (210) and the lower light-collecting component (220) are respectively fixedly installed on the upper and lower ends of the first auxiliary strip (250).

8. The self-powered, automatically adjustable anti-shading photovoltaic system according to claim 7, characterized in that: The main photovoltaic module (200) has a second auxiliary slat (260) installed on the side away from the first auxiliary slat (250), and an auxiliary support frame (261) is hinged to the middle of both the first auxiliary slat (250) and the second auxiliary slat (260).

9. A self-powered, automatically adjustable anti-shading method, characterized in that, Includes the following steps: The magnitude of the current generated by the upper light-collecting device (210) and the lower light-collecting device (220) is obtained, wherein the upper light-collecting device (210) and the lower light-collecting device (220) are both photovoltaic modules; Determine the magnitude of the current generated by the upper light acquisition device (210) and the lower light acquisition device (220). If the magnitude of the current generated by the upper light acquisition device (210) and the lower light acquisition device (220) is the same, then the current generated by the upper light acquisition device (210) and the lower light acquisition device (220) is transmitted outward. If the current generated by the upper light acquisition device (210) is greater than the current generated by the lower light acquisition device (220), then the current supplied by the upper light acquisition device (210) and the lower light acquisition device (220) is cut off, and the current generated by the upper light acquisition device (210) and the lower light acquisition device (220) is supplied to the upper regulating arm controller (520) and the lower regulating arm controller (540) of the feedback regulating component (500), respectively. The upper regulating arm controller (520) and the lower regulating arm controller (540) adjust the current according to the obtained current. The magnitude of the current provides the upper regulating arm (300) and the lower regulating arm (400) with contraction forces at both ends respectively. The contraction force on both ends of the upper regulating arm (300) is greater than that on the lower regulating arm (400). After resisting the contraction force of the lower regulating arm (400), the upper regulating arm (300) can drive the main photovoltaic module (200) to rotate around the hinge, so that the upper end of the main photovoltaic module (200) descends and the lower end rises until the current generated by the upper light-collecting device (210) is equal to the current generated by the lower light-collecting device (220). When the current generated by the upper light acquisition device (210) is equal to the current generated by the lower light acquisition device (220), the connection between the upper light acquisition device (210), the lower light acquisition device (220) and the feedback adjustment component (500) is cut off, and the path for the current generated by the upper light acquisition device (210) and the lower light acquisition device (220) to be transmitted outward is opened.

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