Solar panel dust removal device, solar panel dust removal system and solar panel dust removal method

Abstract

The application relates to a solar panel dust removal device, a solar dust removal system and a solar panel dust removal method. The solar panel dust removal device comprises an upper electrode and a power supply module. The upper electrode is arranged on the light-receiving side of the solar panel at a preset distance. The power supply module is used for providing direct-current high-voltage electricity. The first output end of the power supply module is connected with the upper electrode, and the second output end of the power supply module is connected with the metal frame or the metal support of the solar panel to form a lower electrode. There is a potential difference between the upper electrode and the lower electrode. The electric field between the upper electrode and the solar panel is formed through the capacitive coupling between the upper electrode, the lower electrode and the internal electrode of the solar panel. In the application, the upper electrode and the solar panel form the electric field only by connecting the metal frame or the metal support of the solar panel with the power supply module. Therefore, under the action of water vapor, the dust on the solar panel is charged, and under the action of the electric field, the charged dust particles are separated from the solar panel, so that dust removal is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of electrostatic dust removal, and in particular to a solar panel dust removal device, a solar panel dust removal system and a solar panel dust removal method. Background Art

[0002] Solar energy resources are abundant and are an important renewable energy source. Driven by my country's powerful photovoltaic industry, photovoltaic power generation has been widely used around the world. However, large-scale photovoltaic power stations are often built in areas dominated by deserts, Gobi, and wastelands. Solar panels in these areas are easily covered with dust, which reduces the power generation efficiency. Regular dust removal and cleaning of solar panels is necessary to ensure power generation efficiency. The prior art proposes a method of using the solar panel's own electrodes as the lower electrode, arranging the upper electrodes at a certain distance on the solar panel, and using DC high voltage electrostatic dust removal. However, this method requires that one end of the high-voltage power supply be directly connected to the solar panel's own electrode, that is, the solar panel output electrode, which will make the solar system structure complicated and may also lead to safety issues. Summary of the Invention

[0003] Based on this, it is necessary to provide a solar panel dust removal device to address the technical problems in the existing technology that use the solar panel's own electrodes as the lower electrode, arrange the upper electrode at a certain distance on the solar panel, and use DC high voltage electrostatic dust removal solution, which makes the solar system structure complicated and also leads to safety issues.

[0004] A solar panel dust removal device, comprising:

[0005] an upper electrode, configured to be disposed at a predetermined distance on the light-receiving side of the solar panel;

[0006] A power supply module is used to provide DC high voltage electricity. The first output end of the power supply module is connected to the upper electrode, and the second output end of the power supply module is connected to the metal frame or metal support frame of the solar panel to form a lower electrode. There is a potential difference between the upper electrode and the lower electrode. Through capacitive coupling between the upper electrode, the lower electrode and the internal electrodes of the solar panel, an electric field is formed between the upper electrode and the solar panel, so that the dust on the light-receiving side of the solar panel is charged with the assistance of water vapor, and the charged dust particles are detached from the surface of the solar panel under the action of the electric field.

[0007] In one embodiment, the upper electrode is a grid electrode.

[0008] In one embodiment, the first output terminal is a high-voltage output terminal.

[0009] In one embodiment, the second output terminal is a reference ground terminal.

[0010] In one embodiment, the output voltage range of the high voltage output terminal is 5000V-10000V.

[0011] In one embodiment, the high-voltage output terminal includes a positive high-voltage terminal and a negative high-voltage terminal, and the upper electrode is alternately connected to the positive high-voltage terminal and the negative high-voltage terminal.

[0012] In one embodiment, the solar panel dust removal device further comprises:

[0013] A moving mechanism, wherein the upper electrode is connected to the moving mechanism, and the moving mechanism is used to drive the upper electrode to move relative to the solar panel to remove dust from each of the solar panels arranged in an array; and / or,

[0014] a water vapor generating member, the water vapor generating member being disposed on one side of the upper electrode, the water vapor generating member being used to generate water vapor to assist in charging dust on the light-receiving side of the solar panel; and / or,

[0015] A wind generating member is provided on one side of the upper electrode and is used for generating wind to blow out dust detached from the surface of the solar panel.

[0016] The present invention also provides a solar dust removal system, which can solve at least one of the above technical problems.

[0017] A solar dust removal system includes a solar panel and the above-mentioned solar panel dust removal device;

[0018] The solar dust removal system also includes a metal frame, which is installed at the four edges of the solar panel and is electrically connected to the second output end; or, the solar dust removal system also includes a metal support frame, the solar panel is installed on the metal support frame, and the metal frame is electrically connected to the second output end.

[0019] In one embodiment, the solar panel is tilted relative to a horizontal plane.

[0020] The present invention also provides a solar panel dust removal method, which can solve at least one of the above technical problems.

[0021] A solar panel dust removal method, using any of the solar panel dust removal devices described above, comprises the following steps:

[0022] Disposing upper electrodes on the light-receiving side of the solar panel at a predetermined spacing;

[0023] Connecting the upper electrode to a first output terminal of a power module, and connecting a metal frame or a metal support frame of the solar panel to a second output terminal of the power module to form a lower electrode, wherein a potential difference exists between the upper electrode and the lower electrode;

[0024] Through capacitive coupling between the upper electrode, the lower electrode and the internal electrode of the solar panel, an electric field is formed between the upper electrode and the solar panel, so that the dust on the light-receiving side of the solar panel is charged with the assistance of water vapor, and the charged dust particles are detached from the surface of the solar panel under the action of the electric field.

[0025] Beneficial effects:

[0026] A solar panel dust removal device provided in an embodiment of the present invention includes an upper electrode and a power supply module. The upper electrode is used to be arranged on the light-receiving side of the solar panel at a preset distance; the power supply module is used to provide DC high voltage electricity, and the first output end of the power supply module is connected to the upper electrode, and the second output end of the power supply module is connected to the metal frame or metal support frame of the solar panel to form a lower electrode. There is a potential difference between the upper electrode and the lower electrode. Through capacitive coupling between the upper electrode, the lower electrode and the internal electrodes of the solar panel, an electric field is formed between the upper electrode and the solar panel, so that the dust on the light-receiving side of the solar panel is charged with the assistance of water vapor, and the charged dust is separated from the surface of the solar panel under the action of the electric field. In the present application, the upper electrode is connected to the first output end of the power module, and the lower electrode is connected to the second output end of the power module, so that a first capacitor is formed between the upper electrode and the lower electrode, a second capacitor is formed between the upper electrode and the internal electrode of the solar panel, and a third capacitor is formed between the internal electrode of the solar panel and the lower electrode. Through coupling between the first capacitor, the second capacitor and the third capacitor, a high-voltage electric field is formed between the upper electrode and the solar panel. That is, in the present application, the internal electrode of the solar panel is not connected to the power module, but is only connected to the power module through the metal frame or metal bracket of the solar panel, thereby realizing the formation of an electric field between the upper electrode and the solar panel, so that under the action of water vapor, the dust on the light-receiving side of the solar panel is charged, and under the action of the electric field, the charged dust particles are separated from the solar panel, and can be moved out of the solar panel under the action of gravity or wind, thereby realizing dust removal, simplifying the structure, and improving the safety of dust removal.

[0027] The present invention further provides a solar dust removal system comprising a solar panel and the aforementioned solar panel dust removal device; the solar dust removal system further comprising a metal frame mounted on the edges of the solar panel and electrically connected to the second output terminal; or the solar dust removal system further comprising a metal support frame, the solar panel mounted on the metal support frame, and the metal support frame electrically connected to the second output terminal. This solar dust removal system can achieve at least one of the aforementioned technical effects.

[0028] The present invention also provides a solar panel dust removal method, using any of the solar panel dust removal devices described above, comprising the following steps:

[0029] Disposing upper electrodes on the light-receiving side of the solar panel at a predetermined spacing;

[0030] Connecting the upper electrode to the first output terminal of the power module, and connecting the metal frame or metal support frame of the solar panel to the second output terminal of the power module to form a lower electrode, wherein a potential difference exists between the upper electrode and the lower electrode;

[0031] Through capacitive coupling between the upper electrode, the lower electrode, and the internal electrodes of the solar panel, an electric field is formed between the upper electrode and the solar panel. This charges dust on the light-receiving side of the solar panel with the aid of water vapor, and the charged dust is then removed from the solar panel surface by the action of the electric field. This solar panel dust removal method can achieve at least one of the above-mentioned technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of a solar panel dust removal device provided by one embodiment of the present invention.

[0033] Figure 2 A partial schematic diagram of a solar panel dust removal device provided by one embodiment of the present invention.

[0034] Figure 3 A schematic diagram of a capacitor network between an upper electrode, a lower electrode, and internal electrodes of a solar panel in a solar panel dust removal device provided by one embodiment of the present invention.

[0035] Figure 4 This is an experimental diagram of the dust removal effect of the solar panel dust removal device provided by one embodiment of the present invention.

[0036] Figure Number:

[0037] 100 - upper electrode; 200 - power module; 210 - first output terminal; 220 - second output terminal; 300 - solar panel; 310 - metal frame; 320 - internal electrode; 330 - charged dust particles. DETAILED DESCRIPTION

[0038] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0041] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0042] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0043] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0044] See Figure 1 、 Figure 2 and Figure 3 , Figure 1 A schematic diagram of a solar panel dust removal device provided by one embodiment of the present invention. Figure 2 A partial schematic diagram of a solar panel dust removal device provided by one embodiment of the present invention. Figure 3 Schematic diagram of a capacitive network between an upper electrode, a lower electrode, and an internal electrode of a solar panel in a solar panel dust removal device according to one embodiment of the present invention. The solar panel dust removal device according to one embodiment of the present invention includes an upper electrode 100 and a power module 200. The upper electrode 100 is configured to be positioned at a predetermined distance from the light-receiving side of a solar panel 300. The power module 200 is configured to provide a DC high voltage. A first output terminal 210 of the power module 200 is connected to the upper electrode 100, and a second output terminal 220 of the power module 200 is connected to a metal frame 310 or a metal support frame of the solar panel 300 to form a lower electrode. A potential difference exists between the upper electrode 100 and the lower electrode. Capacitive coupling between the upper electrode 100, the lower electrode, and the internal electrode 320 of the solar panel 300 forms an electric field between the upper electrode 100 and the solar panel 300, thereby charging dust on the light-receiving side of the solar panel 300 with the aid of water vapor. The electric field then causes charged dust particles 330 to detach from the solar panel 300.

[0045] Specifically, in the present application, the upper electrode 100 is connected to the first output terminal 210 of the power module 200, and the lower electrode is connected to the second output terminal of the power module 200, so that a first capacitor C1 is formed between the upper electrode 100 and the lower electrode, a second capacitor C2 is formed between the upper electrode 100 and the internal electrode 320 of the solar panel 300, and a third capacitor C3 is formed between the internal electrode 320 of the solar panel 300 and the lower electrode. Through the coupling between the first capacitor C1, the second capacitor C2 and the third capacitor C3, a high voltage electric field is formed between the upper electrode 100 and the solar panel 300, that is, the solar panel 3 in the present application 00 The internal electrode 320 is not connected to the power module 200, but is only connected to the power module 200 through the metal frame 310 of the solar panel 300 or the metal support frame, thereby forming an electric field between the upper electrode 100 and the solar panel 300. As a result, under the action of water vapor, the dust on the light-receiving side of the solar panel 300 is charged, and under the action of the electric field, the charged dust particles 330 are separated from the solar panel 300 and approach the side of the upper electrode 100, so that they can be moved out of the solar panel 300 area under the action of gravity or wind, thereby achieving dust removal, simplifying the structure, and improving the safety of dust removal.

[0046] The solar panel 300 is divided into a framed solar panel 300 and a frameless solar panel 300. When the solar panel 300 is a framed solar panel 300, the frame is made of metal. When the metal frame 310 is connected to the second output terminal 220 of the power module 200, a capacitor can be formed between the metal frame 310 and the upper electrode 100. When the solar panel 300 is a frameless solar panel 300, the frameless solar panel 300 is fixed to a support frame. The support frame is made of metal. When the metal support frame is connected to the second output terminal 220 of the power module 200, a capacitor can be formed between the metal frame and the upper electrode 100.

[0047] It should be noted that, since the third capacitor C3 is much larger than the second capacitor C2, and the charges on the electrodes of the series capacitors are equal, according to the voltage formula of the series capacitors It can be inferred that the voltage V2 between the upper electrode 100 and the internal electrode 320 of the solar panel 300 is much larger than the voltage V3 between the internal electrode 320 of the solar panel 300 and the lower electrode, that is, the voltage V2 between the upper electrode 100 and the internal electrode 320 of the solar panel 300 occupies most of the voltage V1 applied between the upper electrode 100 and the lower electrode by the high-voltage power supply, thereby forming a high-voltage electric field between the upper electrode 100 and the solar panel 300.

[0048] See Figure 1 、 Figure 2 and Figure 3In one embodiment, the upper electrode 100 is a grid electrode, that is, the grid electrode has a plurality of grid holes. The charged dust particles 330 separated from the solar panel 300 and bounced up can pass through the grid holes on the grid electrode to reach farther upwards and fall back through the grid holes under the action of gravity. Under the action of the electric field, the charged dust particles 330 are repeatedly bounced up from the solar panel 300 until the charged dust particles 330 move out of the solar panel 300 area for dust removal, thereby improving the dust removal rate of the solar panel dust removal device.

[0049] See Figure 1 、 Figure 2 and Figure 3 In one embodiment, the first output terminal 210 is a high-voltage output terminal, the upper electrode 100 is connected to the high-voltage output terminal, the second output terminal 220 is a low-voltage terminal or a reference ground terminal, and the lower electrode is connected to the second output terminal, so that the metal frame 310 or the metal support frame of the solar panel 300 is connected to the low-voltage terminal or the reference ground terminal, thereby preventing electric shock and improving the safety performance of the solar panel dust removal device.

[0050] See Figure 1 and Figure 2 In one embodiment, the second output terminal 220 is a reference ground terminal, and the lower electrode is connected to the reference ground terminal, thereby forming a certain electric field line with the upper electrode. The electric field line causes the charged particles moving out of the grid holes to move along the direction of the electric field distribution, allowing some charged particles to move to the blind area below the grid electrode, thereby improving the uniformity of dust charging on the light-receiving side of the solar panel 300, preventing the majority of charged particles moving out of the grid holes from moving in a straight line to the solar panel, and further improving the safety performance of the solar panel dust removal device. It should be noted that the metal support frame or metal frame 310 is already connected to the ground. By further connecting the metal support frame or metal frame 310 to the reference ground terminal, the stability of the lower electrode voltage can be improved, thereby improving the reliability of the solar panel dust removal device.

[0051] See Figure 1 、 Figure 2 and Figure 4 , Figure 4 This is an experimental diagram of the dust removal effect of a solar panel dust removal device provided by an embodiment of the present invention. In one embodiment, the output voltage range of the high voltage output terminal is 5000V-10000V. Figure 4a, b, c, d in the figure can be known, taking the horizontal coordinate as time and the vertical coordinate as dust removal efficiency, the voltage outputted by the first output end 210 is 5000V, 6000V, 7000V and 8000V, and the dust removal effect diagram of the solar panel dust removal device is shown, wherein, the labels 1, 2 and 3 are respectively three groups of experimental results under the same environment, and it can be known that when the voltage is greater than or equal to 6kV, the dust removal rate can reach or be higher than 90%, which indicates that when the high-voltage power supply is not directly connected with the internal electrode 320 of the solar panel 300, the solar panel dust removal device in the application can also obtain good dust removal effect.

[0052] Referring to Figure 1 and Figure 2 In one of the embodiments, the high-voltage output end includes a positive high-voltage end and a negative high-voltage end, and the upper electrode 100 is alternately connected to the positive high-voltage end and the negative high-voltage end.

[0053] Specifically, when the upper electrode 100 is connected to the positive high-voltage end, the dust particles with negative charges on the solar panel 300 can be subjected to the force of moving away from the solar panel 300, and when the upper electrode 100 is connected to the negative high-voltage end, the dust particles with positive charges on the solar panel 300 can be subjected to the force of moving away from the solar panel 300, so that the light-receiving side of the solar panel 300 does not accumulate charges of a specific polarity, and the dust particles with positive charges and negative charges on the solar panel 300 can both move close to the upper electrode 100 to be removed, so that the dust removal efficiency is higher.

[0054] It should be noted that the upper electrode 100 can be alternately connected to the positive high-voltage end and the negative high-voltage end repeatedly, or only once. Preferably, the time interval of the upper electrode 100 alternately connected to the positive high-voltage end and the negative high-voltage end ranges from 30s to 300s.

[0055] Referring to Figure 1 and Figure 2 In one of the embodiments, the solar panel dust removal device further includes a moving mechanism, and the upper electrode 100 is connected to the moving mechanism, and the moving mechanism is used to drive the upper electrode 100 to move relative to the solar panel, so as to remove dust from each solar panel arranged in an array. Among them, the power module 200 is installed on the moving mechanism.

[0056] Referring to Figure 1 and Figure 2 In one of the embodiments, the solar panel dust removal device further includes a water vapor generating member, and the water vapor generating member is arranged on one side of the upper electrode 100, and the water vapor generating member is used to generate water vapor to assist the dust charging on the light-receiving side of the solar panel 300.

[0057] Specifically, in the present application, the dust on the light-receiving side of the solar panel 300 can be charged with the assistance of water vapor in the air under an electric field. In the present application, the water vapor generating component is provided so that the solar panel dust removal device is not restricted by environmental factors when performing dust removal. That is, when the water vapor content in the air is low and affects the charging of the dust on the light-receiving side of the solar panel 300, the water vapor generated by the water vapor generating component is used to assist the charging of the dust on the light-receiving side of the solar panel 300, thereby improving the reliability of the solar panel dust removal device.

[0058] In other embodiments, the solar panel dust removal device in this embodiment can rely solely on water vapor in the air to achieve dust charging on the light-receiving side of the auxiliary solar panel 300 .

[0059] See Figure 1 and Figure 2 In one embodiment, the solar panel dust removal device further includes a wind generating member, which is disposed on one side of the upper electrode 100. The wind generating member is used to generate wind toward the area between the solar panel 300 and the upper electrode 100 to blow out the charged dust particles 330 floating in the area between the solar panel 300 and the upper electrode 100, thereby improving the dust removal efficiency.

[0060] See Figure 1 、 Figure 2 and Figure 3 In one embodiment, the present invention further provides a solar dust removal system, comprising a solar panel 300 and the above-mentioned solar panel dust removal device; the solar dust removal system further comprises a metal frame 310, the metal frame 310 is installed at the four edges of the solar panel 300, and the metal frame 310 is electrically connected to the second output end 220; or, the solar dust removal system further comprises a metal support frame, the solar panel 300 is installed on the metal support frame, and the metal support frame is electrically connected to the second output end 220.

[0061] Specifically, the solar panel 300 is divided into a framed solar panel 300 and a frameless solar panel 300. When the solar panel 300 is a framed solar panel 300, the metal frame 310 is connected to the second output terminal 220 of the power module 200, thereby forming a capacitor with the upper electrode 100. When the solar panel 300 is a frameless solar panel 300, the frameless solar panel 300 is fixed to a metal support frame, which is connected to the second output terminal 220 of the power module 200, thereby forming a capacitor with the upper electrode 100.

[0062] See Figure 1In one embodiment, the solar panel 300 is tilted relative to the horizontal plane, so that the charged dust particles 330 are subjected to a component force toward the lower side of the solar panel 300 under the action of gravity and the electric field. As a result, during the process of repeated bouncing of the charged dust particles 330 relative to the upper electrode 100, they can gradually move toward the lower side of the solar panel 300 for dust removal.

[0063] It should be noted that when the charged dust particles 330 bounce relative to the solar panel 300, since the charged dust particles 330 float in the air, they can be moved out of the area between the solar panel 300 and the upper electrode 100 under the action of wind or other external forces for dust removal.

[0064] See Figure 1 、 Figure 2 and Figure 3 In one embodiment, the present invention further provides a method for removing dust from a solar panel 300, using any of the above-mentioned solar panel dust removal devices, comprising the following steps:

[0065] The upper electrode 100 is arranged on the light-receiving side of the solar panel 300 at a predetermined interval;

[0066] Connecting the upper electrode 100 to the first output terminal 210 of the power module 200, and connecting the metal frame 310 or the metal support frame of the solar panel 300 to the second output terminal 220 of the power module 200 to form a lower electrode, wherein a potential difference exists between the upper electrode 100 and the lower electrode;

[0067] Through capacitive coupling between the upper electrode 100, the lower electrode and the internal electrode 320 of the solar panel 300, an electric field is formed between the upper electrode 100 and the solar panel 300, so that dust on the light-receiving side of the solar panel 300 is charged with the assistance of water vapor.

[0068] In the present application, the upper electrode 100 is connected to the first output terminal 210 of the power module 200, and the lower electrode is connected to the lower electrode of the power module 200, so that a first capacitor C1 is formed between the upper electrode 100 and the lower electrode, a second capacitor C2 is formed between the upper electrode 100 and the internal electrode 320 of the solar panel 300, and a third capacitor C3 is formed between the internal electrode 320 of the solar panel 300 and the lower electrode. Through the coupling between the first capacitor C1, the second capacitor C2 and the third capacitor C3, a high voltage electric field is formed between the upper electrode 100 and the solar panel 300, that is, the present application The internal electrode 320 of the solar panel 300 is not connected to the power module 200, but is only connected to the power module 200 through the metal frame 310 of the solar panel 300 or the metal support frame, thereby forming an electric field between the upper electrode 100 and the solar panel 300. As a result, under the action of water vapor, the dust on the light-receiving side of the solar panel 300 is charged, and under the action of the electric field, the charged dust particles 330 are separated from the solar panel 300, and can be moved out of the solar panel 300 under the action of external force, thereby achieving dust removal, simplifying the structure, and improving the safety of dust removal.

[0069] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0070] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A solar panel dust removal device, characterized in that: The solar panel dust removal device comprises: an upper electrode, configured to be disposed at a predetermined distance on the light-receiving side of the solar panel; A power supply module is used to provide DC high voltage electricity. The first output end of the power supply module is connected to the upper electrode, and the second output end of the power supply module is connected to the metal frame or metal support frame of the solar panel to form a lower electrode. There is a potential difference between the upper electrode and the lower electrode. Through capacitive coupling between the upper electrode, the lower electrode and the internal electrodes of the solar panel, an electric field is formed between the upper electrode and the solar panel, so that the dust on the light-receiving side of the solar panel is charged with the assistance of water vapor, and the charged dust particles are detached from the surface of the solar panel under the action of the electric field.

2. The solar panel dust removal device according to claim 1, characterized in that: The upper electrode is a grid electrode.

3. The solar panel dust removal device according to claim 1, characterized in that: The first output end is a high-voltage output end.

4. The solar panel dust removal device according to claim 3, characterized in that: The second output terminal is a reference ground terminal.

5. The solar panel dust removal device according to claim 3, characterized in that: The output voltage range of the high-voltage output end is 5000V-10000V.

6. The solar panel dust removal device according to claim 3, characterized in that: The high-voltage output end includes a positive high-voltage end and a negative high-voltage end, and the upper electrode is alternately connected to the positive high-voltage end and the negative high-voltage end.

7. The solar panel dust removal device according to any one of claims 1 to 6, characterized in that: The solar panel dust removal device also includes: A moving mechanism, wherein the upper electrode is connected to the moving mechanism, and the moving mechanism is used to drive the upper electrode to move relative to the solar panel to remove dust from each of the solar panels arranged in an array; and / or, a water vapor generating member, the water vapor generating member being disposed on one side of the upper electrode, the water vapor generating member being used to generate water vapor to assist in charging dust on the light-receiving side of the solar panel; and / or, A wind generating member is provided on one side of the upper electrode and is used for generating wind to blow out dust detached from the surface of the solar panel.

8. A solar dust removal system, characterized in that: comprising a solar panel and a solar panel dust removal device according to any one of claims 1 to 7; The solar dust removal system also includes a metal frame, which is installed at the four edges of the solar panel and is electrically connected to the second output end; or, the solar dust removal system also includes a metal support frame, the solar panel is installed on the metal support frame, and the metal support frame is electrically connected to the second output end.

9. The solar dust removal system according to claim 8, characterized in that: The solar panels are inclined relative to a horizontal plane.

10. A method for removing dust from a solar panel, characterized in that: The solar panel dust removal device according to any one of claims 1 to 7 comprises the following steps: Disposing upper electrodes on the light-receiving side of the solar panel at a predetermined spacing; Connecting the upper electrode to a first output terminal of a power module, and connecting a metal frame or a metal support frame of the solar panel to a second output terminal of the power module to form a lower electrode, wherein a potential difference exists between the upper electrode and the lower electrode; Through capacitive coupling between the upper electrode, the lower electrode and the internal electrode of the solar panel, an electric field is formed between the upper electrode and the solar panel, so that the dust on the light-receiving side of the solar panel is charged with the assistance of water vapor, and the charged dust particles are detached from the surface of the solar panel under the action of the electric field.

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