Solar panel dust removal device and solar panel dust removal system

Abstract

The invention relates to a solar panel dust removal device and a solar panel dust removal system. The solar panel dust removal device comprises a charged assembly and a power module. The charge assembly is arranged on the light receiving side of the solar assembly at a preset distance, the charge assembly comprises a discharge electrode and a grid electrode which are arranged at an interval, and the discharge electrode is located on the side, away from the solar assembly, of the grid electrode; the power supply module is used for providing direct-current high-voltage electricity, a first output end of the power supply module is used for being connected with the discharge electrode, and a second output end of the power supply module is used for being connected with the grid electrode; a potential difference can exist between the discharge electrode and the grid electrode, a potential difference can exist between the grid electrode and the solar module, and the discharge electrode is used for discharging to generate charged ions so as to penetrate through grid holes in the grid electrode to be combined with dust on the light receiving side of the solar module for charging. Charged ions are generated through discharging of the charging assembly, so that dust particles on the surface of the solar panel obtain more charges, and the electric field force borne by the dust particles is improved.

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 and a solar panel dust removal system. 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 efficiency of power generation. Regular dust removal and cleaning of solar panels is necessary to ensure power generation efficiency. In the prior art, electrostatic dust removal is often used to clean solar panels, where electrostatic dust removal is a technology that charges or polarizes dust in a high-voltage electric field and removes it under the action of the electric field force. However, the electrostatic dust removal method in the prior art has problems such as low removal rate of small-particle dust and slow dust removal speed. Summary of the invention

[0003] Based on this, it is necessary to provide a solar panel dust removal device to address the technical problems of low removal rate of small-particle dust and slow dust removal speed in the electrostatic dust removal method in the prior art.

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

[0005] A charging component is used to be arranged at a preset distance on the light-receiving side of the solar component, the charging component comprises a discharge electrode and a grid electrode arranged at intervals, the discharge electrode is located on the side of the grid electrode away from the solar component;

[0006] A power supply module, used for providing DC high voltage electricity, wherein a first output end of the power supply module is used for connecting to the discharge electrode, and a second output end of the power supply module is used for connecting to the grid electrode;

[0007] There can be a potential difference between the discharge electrode and the grid electrode so that a first electric field is formed between the discharge electrode and the grid electrode. There can be a potential difference between the grid electrode and the solar module so that a second electric field is formed between the grid electrode and the solar module. The discharge electrode is used to discharge to generate charged ions, and the charged ions can approach the grid electrode under the action of the first electric field and pass through the grid holes on the grid electrode to combine with dust on the light-receiving side of the solar module to be charged, so that the charged dust particles are separated from the surface of the solar module under the action of the second electric field.

[0008] In one embodiment, the discharge electrode has a plurality of pointed ends arranged in an array on a side facing the grid electrode, and the discharge electrode is used for generating charged ions by corona discharge.

[0009] In one embodiment, the grid electrode has a charge enhancement state and an electrostatic dust removal state; when the grid electrode is in the charge enhancement state, the grid electrode is connected to the second output end, the discharge electrode is connected to the first output end, and the first electric field direction is the same as the second electric field direction; when the grid electrode is in the electrostatic dust removal state, the grid electrode is connected to the second output end, and the discharge electrode is disconnected from the first output end.

[0010] In one of the embodiments, when the grid electrode is in the charge enhancement state, the ground reference terminal of the power module is used to connect to the solar component, and the first electric field direction is the same as the second electric field direction.

[0011] In one of the embodiments, when the grid electrode is in the charge enhancement state, the discharge electrode is at a negative high voltage potential relative to the grid electrode, and when the grid electrode is in the electrostatic dust removal state, the grid electrode is at a positive high voltage potential relative to the solar module; or, when the grid electrode is in the charge enhancement state, the discharge electrode is at a positive high voltage potential relative to the grid electrode, and when the grid electrode is in the electrostatic dust removal state, the grid electrode is at a negative high voltage potential relative to the solar module.

[0012] In one embodiment, the first output end is a high voltage output end, and the output voltage of the second output end of the power supply module can be adjusted to a high voltage or a low voltage. When the grid electrode is in the charge enhancement state, the output voltage of the second output end is adjusted to a low voltage. When the grid electrode is in the electrostatic dust removal state, the output voltage of the second output end is adjusted to a high voltage.

[0013] In one embodiment, when the grid electrode is in the charge enhancement state, the output voltage of the second output terminal is zero; and / or, when the grid electrode is in the electrostatic dust removal state, the ground reference terminal of the power module is used to connect to the solar panel.

[0014] In one embodiment, the first output end includes a positive high-voltage end and a negative high-voltage end, and the discharge electrodes are alternately connected to the positive high-voltage end and the negative high-voltage end.

[0015] The present invention also provides a solar panel dust removal system, which can solve at least one of the above technical problems.

[0016] A solar panel dust removal system comprises a solar module and the above-mentioned solar panel dust removal device; the solar module comprises a solar panel and a metal frame, the metal frame is installed at the edges of the solar panel, and the metal frame is connected to the power module or grounded; or, the solar module comprises a solar panel and a metal support frame, the solar panel is installed on the metal support frame, and the metal support frame is connected to the power module or grounded.

[0017] In one embodiment, the solar panel is inclined relative to a horizontal plane.

[0018] Beneficial effects:

[0019] The solar panel dust removal device provided in the embodiment of the present invention includes a charging component and a power module; the charging component is used to be arranged on the light-receiving side of the solar module at a preset distance, and the charging component includes a discharge electrode and a grid electrode arranged at intervals, and the discharge electrode is located on the side of the grid electrode away from the solar module; the power module is used to provide direct high voltage electricity, and the first output end of the power module is used to connect to the discharge electrode, and the second output end of the power module is used to connect to the grid electrode; there can be a potential difference between the discharge electrode and the grid electrode, so that a first electric field is formed between the discharge electrode and the grid electrode, and there can be a potential difference between the grid electrode and the solar module, so that a second electric field is formed between the grid electrode and the solar module, and the discharge electrode is used to discharge to generate charged ions, and the charged ions can approach the grid electrode under the action of the first electric field, and pass through the grid holes on the grid electrode to combine with the dust on the light-receiving side of the solar module to be charged, so that the charged dust particles are separated from the surface of the solar module under the action of the second electric field. In the present application, charged ions are generated by discharge of the discharge electrode, and the charged ions can approach the grid electrode under the action of the first electric field, and pass through the grid holes on the grid electrode, and fall on the dust particles on the surface of the solar panel to charge them and obtain more charges, thereby increasing the electric field force on the dust particles, thereby facilitating the separation and bounce of small-sized dust particles relative to the solar panel, so that under the action of gravity or wind force, they can be moved out of the solar panel to achieve dust removal, thereby improving the removal rate and dust removal speed of small-sized dust. Among them, the dust particles are charged by discharge, and the charging process does not completely rely on the water film, so as to avoid the influence of too low air humidity on the dust charging, thereby broadening the humidity range for efficient dust removal and improving the dust removal speed in a low humidity environment.

[0020] The present invention also provides a solar panel dust removal system, comprising a solar module and the above-mentioned solar panel dust removal device; the solar module comprises a solar panel and a metal frame, the metal frame is installed at the edges of the solar panel, and the metal frame is connected to a power module or grounded; or the solar module comprises a solar panel and a metal support frame, the solar panel is installed on the metal support frame, and the metal support frame is connected to a power module or grounded. The solar panel dust removal system can achieve at least one of the above-mentioned technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG. 1 is a schematic diagram of a solar panel dust removal device provided by an embodiment of the present invention.

[0022] FIG. 2 is a schematic diagram of a solar panel dust removal device according to an embodiment of the present invention, wherein the grid electrodes are in a charge-enhanced state.

[0023] FIG3 is a schematic diagram of a solar panel dust removal device according to an embodiment of the present invention, wherein the grid electrode is in an electrostatic dust removal state.

[0024] FIG. 4 is a circuit connection structure of a solar panel dust removal device provided in an embodiment of the present invention.

[0025] FIG. 5 is a schematic diagram of a solar panel dust removal device provided by another embodiment of the present invention.

[0026] FIG. 6 is a partial schematic diagram of a solar panel dust removal system provided in an embodiment of the present invention.

[0027] Figure Number:

[0028] 100-power module; 120-first output terminal; 130-second output terminal; 200-charged component; 210-discharge electrode; 220-grid electrode; 221-first electrode; 222-second electrode; 230-tip; 240-support; 250-charged dust particles; 260-charged ions; 300-solar module; 310-solar panel; 320-internal electrode; 330-metal frame; 340-metal support frame. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0030] 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 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, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] 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 a central 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 a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0035] Referring to Figures 1, 2 and 3, Figure 1 is a schematic diagram of a solar panel dust removal device provided in an embodiment of the present invention. Figure 2 is a schematic diagram of a solar panel dust removal device provided in an embodiment of the present invention in which the grid electrode is in a charge enhancement state. Figure 3 is a schematic diagram of a solar panel dust removal device provided in an embodiment of the present invention in which the grid electrode is in an electrostatic dust removal state. A solar panel dust removal device provided in an embodiment of the present invention includes a charging component 200 and a power module 100; the charging component 200 is used to be arranged at a preset distance on the light-receiving side of a solar component 300, and the charging component 200 includes a discharge electrode 210 and a grid electrode 220 arranged at intervals, and the discharge electrode 210 is located on the side of the grid electrode 220 away from the solar component 300;

[0036] The power module 100 is used to provide direct current high voltage electricity. The first output terminal 120 of the power module 100 is used to be connected to the discharge electrode 210, and the second output terminal 130 of the power module 100 is used to be connected to the grid electrode 220. There can be a potential difference between the discharge electrode 210 and the grid electrode 220, so that a first electric field is formed between the discharge electrode 210 and the grid electrode 220. There can be a potential difference between the grid electrode 220 and the solar module 300, so that a second electric field is formed between the grid electrode 220 and the solar module 300. The discharge electrode 210 is used to discharge to generate charged ions 260, and the charged ions 260 can approach the grid electrode 220 under the action of the first electric field and pass through the grid holes on the grid electrode 220 to combine with the dust on the light-receiving side of the solar module 300 to be charged, so that the charged dust particles 250 are separated from the surface of the solar module 300 under the action of the second electric field.

[0037] Specifically, in the present application, the discharge electrode 210 is used to discharge to generate charged ions 260, and the charged ions 260 can approach the grid electrode 220 under the action of the first electric field, and pass through the grid holes on the grid electrode 220, and fall onto the dust particles on the surface of the solar panel 310 to charge them and obtain more charges, thereby increasing the electric field force on the dust particles, thereby facilitating the separation and bounce of small-sized dust particles relative to the solar panel 310, so that under the action of gravity or wind force, they can be moved out of the solar panel 310 to achieve dust removal, thereby improving the removal rate and dust removal speed of small-sized dust particles.

[0038] Among them, the dust particles are charged through discharge, so that the charging process does not completely rely on water vapor, avoiding the impact of low air humidity on dust charging, thereby broadening the humidity range for efficient dust removal and increasing the dust removal speed in a low humidity environment.

[0039] It should be noted that there is a potential difference between the grid electrode 220 and the solar module 300. In the process of forming a second electric field between the grid electrode 220 and the solar module 300, the dust particles on the light-receiving side of the solar panel 310 can also be charged with the assistance of water vapor, thereby further increasing the number of charged dust particles on the surface of the solar panel 310 and enhancing the electric field force on the dust particles.

[0040] It should also be noted that the solar panel 300 can be connected to the power module 100, or disconnected from the power module 100 and grounded, as long as a potential difference can be achieved between the grid electrode 220 and the solar panel 300, and a second electric field is formed between the grid electrode 220 and the solar panel 300, so that the charged dust particles on the light-receiving side of the solar panel 300 can be detached from the surface of the solar panel 300.

[0041] 1 and 2 , in one embodiment, the discharge electrode 210 has a plurality of tips 230 arranged in an array on a side facing the grid electrode 220 , and the discharge electrode 210 is used to generate charged ions 260 by corona discharge.

[0042] Specifically, the discharge electrode 210 is a needle electrode or a tooth electrode. The high voltage DC power provided by the power module 100 forms high voltage between the discharge electrode 210 and the grid electrode 220. By adjusting the output voltage of the power module 100, a continuous and controllable corona discharge occurs between the discharge electrode 210 and the grid electrode 220. The gas ions generated by the discharge pass through the grid holes of the grid electrode 220 under the action of the first electric field and move toward the solar panel 310, and finally charge the dust particles on the light-receiving side of the solar panel 310. Preferably, one tip 230 can correspond to multiple grids of the grid electrode 220.

[0043] When the discharge electrode 210 is at a positive high voltage potential relative to the grid electrode 220, the corona discharge generates positive ions in the direction of the grid electrode 220, and charges the dust particles positively; when the discharge electrode 210 is at a negative high voltage potential relative to the grid electrode 220, the corona discharge generates negative ions in the direction of the grid electrode 220, and charges the dust particles negatively. Preferably, the grid electrode 220 has a mesh size range of 1 mm-10 mm, and the distance range between the tip 230 and the grid electrode 220 is 5 mm-30 mm.

[0044] In other embodiments, an insulating medium is inserted between the discharge electrode 210 and the grid electrode 220 to perform dielectric barrier discharge. It should be noted that other discharge modes are also possible, and the present embodiment is not limited thereto.

[0045] Referring to Figures 1, 2, 3 and 4, Figure 4 is a circuit connection structure in a solar panel dust removal device provided by an embodiment of the present invention. In one embodiment, the grid electrode 220 has a charge enhancement state and an electrostatic dust removal state; when the grid electrode 220 is in the charge enhancement state, the grid electrode 220 is connected to the second output terminal 130, and the discharge electrode 210 is connected to the first output terminal 120; when the grid electrode 220 is in the electrostatic dust removal state, the grid electrode 220 is connected to the second output terminal 130, and the discharge electrode 210 is disconnected from the first output terminal 120.

[0046] Specifically, when the grid electrode 220 is in the charge enhancement state, the grid electrode 220 is connected to the second output terminal 130 and the discharge electrode 210 is connected to the first output terminal 120, so that a potential difference is formed between the grid electrode 220 and the discharge electrode 210, so that the discharge electrode 210 discharges.

[0047] When the grid electrode 220 is in the electrostatic dust removal state, the grid electrode 220 is connected to the second output terminal 130, and the solar module 300 is connected to the power module 100 or disconnected from the power module 100 and grounded, so that a potential difference is formed between the grid electrode 220 and the solar module 300, and the discharge electrode 210 is disconnected from the second output terminal 130, thereby reducing the interference caused by the second electric field between the grid electrode 220 and the solar module 300, so that the charged dust particles 250 on the surface of the solar panel 310 are subjected to the electric field of the electrostatic force stably toward the grid electrode 220, driving the charged dust particles 250 to break away from the solar panel 310 and move toward the grid electrode 220, thereby improving the reliability of the solar panel dust removal device. Preferably, the distance between the grid and the surface of the solar panel 310 is in the range of 5mm-25mm.

[0048] Referring to FIG. 1 , FIG. 2 , FIG. 3 and FIG. 4 , in one embodiment, the solar panel dust removal device further includes a controller, and the controller is electrically connected to the power module 100. In the initial state, the controller controls the grid electrode 220 to be connected to the second output terminal 130, and the discharge electrode 210 to be connected to the first output terminal 120, so that the grid electrode 220 is in a charge enhancement state to perform charge enhancement work. When the charge enhancement work lasts for a first preset time, the controller controls the discharge electrode 210 to be disconnected from the first output terminal 120, so that the grid electrode 220 is switched from the charge enhancement state to the electrostatic dust removal state to perform electrostatic dust removal work. When the electrostatic dust removal work lasts for a second preset time, the controller controls the discharge electrode 210 to be connected to the first output terminal 120 to perform a cycle.

[0049] Furthermore, the solar panel dust removal device also includes a detector, which is electrically connected to the controller. The controller controls the detection element to detect whether the dust on the surface of the solar panel 310 has been cleaned. If so, the controller controls the system to shut down. If not, the controller controls to cycle until the cleaning is completed. It should be noted that in other embodiments, the working time can also be controlled by setting the number of cycles.

[0050] Referring to Figures 1, 2, 3 and 4, in one embodiment, when the grid electrode 220 is in the charge enhancement state, the direction of the first electric field is the same as the direction of the second electric field, so that the charged ions 260 passing through the grid holes on the grid electrode 220 can continue to approach the solar component 300 to combine with the dust on the light-receiving side of the solar panel 310 for charging, thereby improving the efficiency of charging the dust particles on the light-receiving side of the solar panel 310.

[0051] It should be noted that when the grid electrode 220 is in the enhanced charge state, the solar module 300 is connected to the power module 100, or disconnected from the power module 100 and grounded, and it is sufficient to ensure that the first electric field direction is the same as the second electric field direction.

[0052] In other embodiments, when the grid electrode 220 is in the charge enhancement state, the potential difference between the grid electrode 220 and the solar component 300 is zero.

[0053] Referring to Figures 1, 2, 3 and 4, in one embodiment, when the grid electrode 220 is in the enhanced charge state, the ground reference terminal of the power module 100 is used to connect to the solar component 300, so that a stable potential difference is formed between the grid electrode 220 and the solar component 300, so that the charged ions passing through the grid holes on the grid electrode 220 can stably move along the electric field lines of the second electric field toward the solar panel 310, thereby improving the uniformity of the charging of dust particles on the light-receiving side of the solar panel 310.

[0054] Furthermore, when the grid electrode 220 is in the electrostatic dust removal state, the ground reference terminal of the power module 100 is connected to the solar module 300, thereby improving safety.

[0055] 1 , 2 , 3 and 4 , in one embodiment, when the grid electrode 220 is in the charge enhancement state, the discharge electrode 210 is at a negative high voltage potential relative to the grid electrode 220 , and when the grid electrode 220 is in the electrostatic dust removal state, the grid electrode 220 is at a positive high voltage potential relative to the solar panel 300 .

[0056] Specifically, the discharge electrode 210 is at a negative high voltage potential relative to the grid electrode 220, and the corona discharge generates negative ions in the direction of the grid electrode 220, which charges the dust particles negatively. The solar panel 300 is at a negative high voltage potential relative to the grid electrode 220, and the direction of the electric field is from the grid electrode 220 to the photovoltaic panel, so that the negatively charged dust particles break away from the solar panel 310 and move in the direction of the grid electrode 220.

[0057] 1 , 2 , 3 and 4 , in another embodiment, when the grid electrode 220 is in the charge enhancement state, the discharge electrode 210 is at a positive high voltage potential relative to the grid electrode 220 , and when the grid electrode 220 is in the electrostatic dust removal state, the grid electrode 220 is at a negative high voltage potential relative to the solar panel 300 .

[0058] Specifically, the discharge electrode 210 is at a positive high voltage potential relative to the grid electrode 220, and the corona discharge generates positive ions in the direction of the grid electrode 220, which positively charges the dust particles. The solar panel 300 is at a positive high voltage potential relative to the grid electrode 220, and the direction of the electric field is from the photovoltaic panel to the grid electrode 220, so that the positively charged dust particles break away from the solar panel 310 and move toward the grid electrode 220.

[0059] Referring to FIG. 1 , FIG. 2 , FIG. 3 and FIG. 4 , in one embodiment, the first output terminal 120 is a high voltage output terminal, and the output voltage of the second output terminal 130 of the power module 100 can be adjusted to a high voltage or a low voltage. When the grid electrode 220 is in the charge enhancement state, the output voltage of the second output terminal 130 is adjusted to a low voltage, thereby ensuring that there is a high voltage potential between the discharge electrode 210 and the grid electrode 220, and improving safety. When the grid electrode 220 is in the electrostatic dust removal state, the output voltage of the second output terminal 130 is adjusted to a high voltage, so that there is a high voltage potential between the grid electrode 220 and the solar module 300.

[0060] 1 , 2 , 3 and 4 , in one embodiment, the first output terminal 120 includes a positive high voltage terminal and a negative high voltage terminal, and the discharge electrodes 210 are alternately connected to the positive high voltage terminal and the negative high voltage terminal.

[0061] Specifically, there is a potential difference between the grid electrode 220 and the solar component 300. Through capacitive coupling, an electric field is formed between the grid electrode 220 and the solar panel 310, so that the dust on the light-receiving side of the solar panel 310 is charged with the assistance of water vapor, so that the dust particles have positively charged dust particles and negatively charged dust particles. By alternately connecting the discharge electrode 210 to the positive high voltage terminal and the negative high voltage terminal, the direction of the first electric field is alternately changed. In order to ensure that the charge combined with the dust through corona discharge can be separated relative to the solar module 300 under the action of the second electric field, in the electrostatic dust removal state, the voltage connecting the grid electrode 220 and the solar module 300 needs to be adjusted to change the direction of the electric field between the grid electrode 220 and the solar module 300. Therefore, when the discharge electrode 210 is alternately connected to the positive high voltage terminal and the negative high voltage terminal, the direction of the electric field between the grid electrode 220 and the solar module 300 is synchronously and alternately changed, so that the positively charged and negatively charged dust particles on the solar panel 310 can be subjected to a force away from the solar panel 310, so that the light-receiving side of the solar panel 310 does not accumulate charges of a specific polarity, and the positively charged and negatively charged dust particles on the solar panel can bounce relative to the solar panel to be removed, so that the dust removal efficiency is higher.

[0062] Referring to Figures 1, 2, 3, 4 and 5, Figure 5 is a schematic diagram of a solar panel dust removal device provided by another embodiment of the present invention. In one embodiment, the grid electrode 220 includes a first electrode 221 and a second electrode 222 arranged at intervals, the first electrode 221 is located on a side of the second electrode 222 close to the discharge electrode 210, there can be a potential difference between the first electrode 221 and the discharge electrode 210 to form a first electric field, there is a potential difference between the second electrode 222 and the solar module 300 to form a second electric field, there is a potential difference between the first electrode 221 and the second electrode 222 to form a third electric field, so that the charged ions 260 passing through the grid holes of the first electrode 221 pass through the grid holes of the second electrode 222 under the action of the third electric field to approach the solar module 300.

[0063] Specifically, the first electrode 221 is connected to the low voltage of the second output terminal 130, the second electrode 222 is connected to the high voltage of the second output terminal 130, and the direction of the third electric field between the first electrode 221 and the second electrode 222 is the same as the direction of the first electric field, so that the charged ions 260 can approach the solar panel 310 via the third electric field. The arrangement of the first electrode 221 and the second electrode 222 can reduce the switching between the grid electrode 220 and the second output terminal 130, thereby improving the convenience of operation.

[0064] In other embodiments, the first electrode 221 and the second electrode 222 may be integrally formed.

[0065] In other embodiments, the solar panel dust removal device also includes a wind generating element, which is disposed on one side of the grid electrode 220. The wind generating element is used to generate wind toward the area between the solar panel 310 and the grid electrode 220 to blow out the charged dust particles 250 floating in the area between the solar panel 310 and the grid electrode 220, thereby improving the dust removal efficiency.

[0066] Referring to Figures 1, 2, 3, 4 and 6, Figure 6 is a partial schematic diagram of a solar panel dust removal system provided in one embodiment of the present invention. In one embodiment, the solar panel dust removal device further includes a support 240, the support 240 is mounted on the frame or support frame of the solar panel 310, and the grid electrode 220 and the discharge electrode 210 are connected to the support 240.

[0067] In other embodiments, the solar panel dust removal device further includes a moving mechanism, the grid electrode 220 and the discharge electrode 210 are connected to the moving mechanism, and the moving mechanism is used to drive the grid electrode 220 and the discharge electrode 210 to move relative to the solar panel, so as to remove dust from each solar panel arranged in an array. The power module 100 is installed on the moving mechanism.

[0068] 1, 2, 3, 4 and 6, an embodiment of the present invention further provides a solar panel 310 dust removal system, including a solar module 300 and the above-mentioned solar panel dust removal device; the solar module 300 includes a solar panel 310 and a metal frame 330, the metal frame 330 is installed at the edges of the solar panel 310, and the metal frame 330 is connected to the power module 100 or grounded; or, the solar module 300 includes a solar panel 310 and a metal support frame 340, the solar panel 310 is installed on the metal support frame 340, and the metal support frame 340 is connected to the power module 100 or grounded.

[0069] Specifically, the metal frame 330 or the metal support frame 340 of the solar panel 310 is connected to or grounded with the power module 100, and the second electric field can be formed between the grid electrode 220 and the solar panel 310 through the capacitive coupling between the grid electrode 220, the internal electrode 320 of the solar panel 310, and the metal frame 330 or the metal support frame 340 of the solar panel 310. That is, the electric field can be formed between the grid electrode 220 and the solar panel 310 only by connecting or grounding the metal frame 330 or the metal support of the solar panel 310 to the power module 100, thereby avoiding the connection between the internal electrode 320 of the solar panel 310 and the power module 100, thereby avoiding the exposure of the internal electrode 320 of the solar panel 310, simplifying the structure, and improving the safety performance.

[0070] It should be noted that the solar panel 310 is divided into a framed solar panel and a frameless solar panel. When the solar panel 310 is a framed solar panel, the metal frame 330 is connected to the power module 100 or grounded, so as to form a capacitor with the grid electrode 220. When the solar panel 310 is a frameless solar panel, the frameless solar panel is fixed on the metal support frame 340, and the metal support frame 340 is connected to the power module 100 or grounded, so as to form a capacitor with the upper electrode.

[0071] In other embodiments, the internal electrode 320 of the solar panel 310 may also be connected to a power module or grounded.

[0072] Referring to FIG. 1 and FIG. 6 , in one embodiment, the solar panel 310 is tilted relative to the horizontal plane, so that the charged dust particles 250 are subjected to a component force toward the lower side of the solar panel 310 under the action of gravity and the electric field, so that during the process of the charged dust particles 250 repeatedly bouncing relative to the grid electrode 220, they can gradually move toward the lower side of the solar panel 310 for dust removal.

[0073] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0074] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A solar panel dust removal device, characterized in that: The solar panel dust removal device comprises: A charging component is used to be arranged at a preset distance on the light-receiving side of the solar component, the charging component comprises a discharge electrode and a grid electrode arranged at intervals, the discharge electrode is located on the side of the grid electrode away from the solar component; A power supply module, used for providing DC high voltage electricity, wherein a first output end of the power supply module is used for connecting to the discharge electrode, and a second output end of the power supply module is used for connecting to the grid electrode; There can be a potential difference between the discharge electrode and the grid electrode so that a first electric field is formed between the discharge electrode and the grid electrode. There can be a potential difference between the grid electrode and the solar module so that a second electric field is formed between the grid electrode and the solar module. The discharge electrode is used to discharge to generate charged ions, and the charged ions can approach the grid electrode under the action of the first electric field and pass through the grid holes on the grid electrode to combine with dust on the light-receiving side of the solar module to be charged, so that the charged dust particles are separated from the surface of the solar module under the action of the second electric field.

2. The solar panel dust removal device according to claim 1, characterized in that: The discharge electrode has a plurality of pointed ends arranged in an array on a side facing the grid electrode, and the discharge electrode is used for generating charged ions by corona discharge.

3. The solar panel dust removal device according to claim 1, characterized in that: The grid electrode has a charge enhancement state and an electrostatic dust removal state; When the grid electrode is in the charge enhancement state, the grid electrode is connected to the second output end, and the discharge electrode is connected to the first output end; when the grid electrode is in the electrostatic dust removal state, the grid electrode is connected to the second output end, and the discharge electrode is disconnected from the first output end.

4. The solar panel dust removal device according to claim 3, characterized in that: When the grid electrode is in the charge enhancement state, the first electric field direction is the same as the second electric field direction.

5. The solar panel dust removal device according to claim 4, characterized in that: When the grid electrode is in the charge enhancement state, the ground reference terminal of the power module is used to connect to the solar module.

6. The solar panel dust removal device according to claim 3, characterized in that: When the grid electrode is in the charge enhancement state, the discharge electrode is at a negative high voltage potential relative to the grid electrode, and when the grid electrode is in the electrostatic dust removal state, the grid electrode is at a positive high voltage potential relative to the solar module; or, when the grid electrode is in the charge enhancement state, the discharge electrode is at a positive high voltage potential relative to the grid electrode, and when the grid electrode is in the electrostatic dust removal state, the grid electrode is at a negative high voltage potential relative to the solar module.

7. The solar panel dust removal device according to claim 6, characterized in that: The first output end is a high-voltage output end, and the output voltage of the second output end of the power supply module can be adjusted to a high voltage or a low voltage. When the grid electrode is in the charge enhancement state, the output voltage of the second output end is adjusted to a low voltage. When the grid electrode is in the electrostatic dust removal state, the output voltage of the second output end is adjusted to a high voltage.

8. The solar panel dust removal device according to claim 6, characterized in that: The first output end includes a positive high-voltage end and a negative high-voltage end, and the discharge electrodes are alternately connected to the positive high-voltage end and the negative high-voltage end.

9. A solar panel dust removal system, characterized in that: A solar panel dust removal device comprising a solar panel assembly and any one of claims 1 to 8; The solar energy component includes a solar panel and a metal frame, wherein the metal frame is installed at the edges of the solar panel and connected to the power module or grounded; or, the solar energy component includes a solar panel and a metal support frame, wherein the solar panel is installed on the metal support frame and the metal support frame is connected to the power module or grounded.

10. The solar panel dust removal system according to claim 9, characterized in that: The solar panel is inclined relative to a horizontal plane.

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