Self-cleaning roof photovoltaic protective net and self-cleaning system

Abstract

The utility model discloses a self-cleaning roof photovoltaic protective net and a self-cleaning system, and relates to the field of photovoltaic technology, the self-cleaning roof photovoltaic protective net comprises a transparent protective assembly covering a photovoltaic panel, the transparent protective assembly comprises two parallel axial support rods arranged on two sides of the photovoltaic panel, and the two axial support rods are connected with the transparent protective assembly. The two ends of the two axial supporting rods are aligned, arc-shaped supporting rods bent upwards are connected between the tail ends of the two axial supporting rods, the two arc-shaped supporting rods and the two axial supporting rods form a protective framework, and a protective net assembly is installed on the protective framework. According to the utility model, the light-transmitting protective net is arranged above the photovoltaic panel, so that the heat dissipation performance is better than that of a closed protective cover, and the photovoltaic panel is prevented from being damaged due to overheating.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaics, and more specifically to the technical field of a self-cleaning roof photovoltaic protection net and a self-cleaning system. Background Art

[0002] With the application of solar photovoltaic technology, photovoltaic roofs have become an important way to utilize renewable energy. However, surface pollutants on photovoltaic modules (such as bird droppings, leaves, dust, etc.) can reduce the light absorption efficiency of photovoltaic panels and even produce a "hot spot effect" that burns photovoltaic modules.

[0003] To solve this problem, commonly used cleaning methods include manual cleaning and automatic cleaning. However, in order to avoid the loss of photovoltaic array power generation due to artificial shadows during the cleaning process, and to avoid the damage of components with relatively high surface temperatures when exposed to cold water when the light is good, no matter which cleaning method is used, it must be carried out during the period of weak sunlight. In this way, the adverse effects of pollutants attached to the surface of photovoltaic panels when the sunlight is strong cannot be eliminated. Therefore, how to reduce the destructive effect of pollutants on photovoltaic components when the sunlight is strong and at the same time achieve efficient cleaning of pollutants is an urgent problem to be solved in the actual application of rooftop photovoltaics. Utility Model Content

[0004] The purpose of the utility model is to solve the technical problem that the existing roof photovoltaic components are easily blocked by pollutants such as bird droppings, leaves, dust, etc., affecting normal operation, and the existing cleaning technology cannot remove the pollutants in time, resulting in the photovoltaic components in the blocked area being prone to "hot spot effect" and burning. The utility model provides a self-cleaning roof photovoltaic protection net and a self-cleaning system.

[0005] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0006] The first aspect of the utility model provides a self-cleaning roof photovoltaic protection net, including a transparent protection component covering the top of the photovoltaic panel, the transparent protection component including two mutually parallel axial support rods arranged on both sides of the photovoltaic panel, the two axial support rods are aligned at both ends, and an upwardly curved arc support rod is connected between the ends of the two axial support rods, the two arc support rods and the two axial support rods form a protection frame, and the protection net assembly is installed on the protection frame.

[0007] Specifically, at least one photovoltaic panel is arranged on the roof surface.

[0008] In one embodiment, the protective net assembly includes a grid frame arranged in a criss-cross pattern and a protective net made of a light-transmitting material arranged on the grid frame.

[0009] In one embodiment, the material of the protective net is one or more of light-transmitting polymethyl methacrylate, polystyrene or polycarbonate.

[0010] In one embodiment, the mesh size of the protective net is between 0.5 mm and 5 mm.

[0011] The second aspect of the utility model provides a self-cleaning system for cleaning the above-mentioned self-cleaning roof photovoltaic protection net.

[0012] In one embodiment, a self-cleaning system is provided between the photovoltaic panel and the protective net, and a pollutant identification system is provided above the protective net, wherein the self-cleaning system is connected to the pollutant identification system;

[0013] The pollutant identification system includes an image sensor, and a control unit electrically connected to the image sensor;

[0014] The self-cleaning system comprises a cleaning device and a driving device connected to the cleaning device, and the driving device is electrically connected to the control unit.

[0015] In one embodiment, the cleaning device includes a walking track, a cleaning head, an air inlet and outlet pipe, an air suction pipe, an air jet pipe, a valve, an air compressor and a vacuum cleaner host, the cleaning head is connected to one end of the air inlet and outlet pipe, the other end of the air inlet and outlet pipe is connected to the air suction pipe and the air jet pipe respectively, and the air suction pipe and the air jet pipe are both connected to the driving device;

[0016] A vacuum cleaner host and an air compressor are respectively arranged on the connection between the suction pipe and the jet pipe, and valves are arranged on the connection between the suction pipe and the jet pipe;

[0017] The cleaning head is slidably arranged on the walking track.

[0018] In one embodiment, the travel track includes two axial tracks respectively arranged to fit the corresponding axial support rods, and an arc track respectively arranged to fit any arc support rod, and both ends of the arc track are respectively connected to the two axial tracks.

[0019] In one embodiment, the outlet of the cleaning head is circular and is slidably mounted on an arc track. The diameter of the cleaning head is 0.01-0.02 m.

[0020] In one embodiment, the suction strength of the vacuum cleaner during the vacuuming operation is 2000-5000 Pa. During the jetting operation, the air pressure of the air compressor is 6000-8000 Pa.

[0021] Working principle: This solution sets a translucent protective net above the photovoltaic panel. On the one hand, it can prevent pollutants such as leaves, bird droppings, and dust from falling directly onto the surface of the photovoltaic panel, causing local long-term shading and component damage, and can also avoid heat dissipation problems caused by the closed protective cover. In addition, this solution sets a self-cleaning system between the photovoltaic panel and the protective net, which uses vacuuming to remove pollutants such as dust and bird droppings on the surface of the protective net, and uses jets to remove pollutants such as leaves and branches on the surface of the protective net, thereby effectively avoiding the problem of pollutants attached to the protective net forming shadow areas on the surface of the photovoltaic panel and affecting the efficiency of photovoltaic power generation.

[0022] The beneficial effects of the utility model are as follows:

[0023] 1. The utility model provides a light-transmitting protective net above the photovoltaic panel, which has better heat dissipation performance than a closed protective cover, thereby preventing the photovoltaic panel from being damaged due to overheating.

[0024] 2. The utility model intercepts pollutants by using a light-transmitting protective net. The shadow area formed on the photovoltaic panel by the pollutants covered by the protective net will change with the change of the angle of sunlight, thereby avoiding the problem of pollutants directly covering the surface of the photovoltaic panel, causing local long-term heating and loss.

[0025] 3. A self-cleaning system is set up between the photovoltaic panels and the protective net. Through vacuuming and jetting, it can simultaneously remove pollutants such as dust, bird droppings, and leaves on the surface of the protective net, reducing water waste compared to conventional self-cleaning methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0028] Figure 2 This is a schematic diagram of the structure of the protective net of the utility model;

[0029] Figure 3 A schematic diagram of a cleaning device of the present utility model;

[0030] Figure numerals: 1-photovoltaic panel, 2-protective net, 3-axial track, 4-arc track, 5-cleaning head, 6-inlet and outlet air pipes, 7-suction pipe, 8-jet pipe, 9-valve, 10-vacuum cleaner main unit, 11-air compressor, 12-driving device, 13-control unit, 14-image sensor. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0034] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] Example 1

[0036] like Figures 1 to 3 As shown, the first aspect of the utility model provided in this embodiment provides a self-cleaning roof photovoltaic protection net, including a transparent protection component covering the photovoltaic panel 1, the transparent protection component including two mutually parallel axial support rods arranged on both sides of the photovoltaic panel 1, the two axial support rods are aligned at both ends, and an upwardly curved arc support rod is connected between the ends of the two axial support rods, the two arc support rods and the two axial support rods constitute a protection frame, and the protection frame is equipped with a protection net 2 component.

[0037] Specifically, at least one photovoltaic panel 1 is arranged on the roof surface.

[0038] Example 2

[0039] like Figures 1 to 3 As shown, the first aspect of the utility model provided in this embodiment provides a self-cleaning roof photovoltaic protection net, including a transparent protection component covering the photovoltaic panel 1, the transparent protection component including two mutually parallel axial support rods arranged on both sides of the photovoltaic panel 1, the two axial support rods are aligned at both ends, and an upwardly curved arc support rod is connected between the ends of the two axial support rods, the two arc support rods and the two axial support rods constitute a protection frame, and the protection frame is equipped with a protection net 2 component.

[0040] The protective net 2 assembly includes a grid frame arranged in a crisscross pattern and a protective net 2 made of a light-transmitting material arranged on the grid frame. The material of the protective net 2 is one or more of light-transmitting polymethyl methacrylate, polystyrene or polycarbonate. The mesh size of the protective net 2 is between 0.5 mm and 5 mm.

[0041] Example 3

[0042] This embodiment provides a self-cleaning system for a photovoltaic protection net 2, which is used to clean the above-mentioned self-cleaning roof photovoltaic protection net. It includes a self-cleaning system placed between the photovoltaic panel 1 and the protection net 2, and a pollutant identification system arranged above the protection net 2, and the self-cleaning system is connected to the pollutant identification system;

[0043] The pollutant identification system includes an image sensor 14 and a control unit 13 electrically connected to the image sensor 14 ; the self-cleaning system includes a cleaning device and a driving device 12 connected to the cleaning device, and the driving device 12 is electrically connected to the control unit 13 .

[0044] The cleaning device includes a walking track, a cleaning head 5, an air inlet and outlet pipe 6, an air suction pipe 7, an air jet pipe 8, a valve 9, an air compressor 11 and a vacuum cleaner main unit 10. The cleaning head 5 is connected to one end of the air inlet and outlet pipe 6, and the other end of the air inlet and outlet pipe 6 is connected to the air suction pipe 7 and the air jet pipe 8 respectively. The air suction pipe 7 and the air jet pipe 8 are both connected to a driving device 12.

[0045] A vacuum cleaner host 10 and an air compressor 11 are respectively arranged on the connection between the suction pipe 7 and the jet pipe 8, and a valve 9 is arranged on the connection between the suction pipe 7 and the jet pipe 8;

[0046] The cleaning head 5 is slidably arranged on the travel track.

[0047] Example 4

[0048] This embodiment is further optimized on the basis of embodiment 3, specifically:

[0049] The walking track includes two axial tracks 3 respectively arranged to fit the corresponding axial support rods, and an arc track 4 arranged to fit any arc support rod, and both ends of the arc track 4 are respectively connected to the two axial tracks 3 .

[0050] The outlet of the cleaning head 5 is circular and is slidably mounted on the arc track 4. The diameter of the cleaning head 5 is 0.01-0.02 m.

[0051] Specifically, during the vacuuming operation, the suction strength of the vacuum cleaner is 2000-5000 Pa. During the jetting operation, the air pressure of the air compressor 11 is 6000-8000 Pa.

[0052] Example 5

[0053] This embodiment provides a self-cleaning method for a self-cleaning roof photovoltaic protection net, using the self-cleaning system of the photovoltaic protection net 2 described above, including the following steps:

[0054] Step 1: Detect pollutants on the protective net 2 through the image sensor 14 of the pollutant recognition system;

[0055] Step 2, the control unit 13 analyzes the data of the image sensor 14 to determine whether the self-cleaning system needs to be started;

[0056] Step 3: If necessary, the control unit 13 starts the self-cleaning system, and the driving device 12 drives the cleaning device to move to the pollutant position to perform a cleaning operation;

[0057] Step 4: Repeat the above steps until the control unit 13 determines that the self-cleaning system does not need to be started.

[0058] Working principle: This solution sets a translucent protective net 2 above the photovoltaic panel 1. On the one hand, it can prevent pollutants such as leaves, bird droppings, and dust from falling directly onto the surface of the photovoltaic panel 1, causing local long-term shading and component damage, and can also avoid heat dissipation problems caused by the closed protective cover. In addition, this solution sets a self-cleaning system between the photovoltaic panel 1 and the protective net 2, which sucks away pollutants such as dust and bird droppings on the surface of the protective net 2 by vacuuming, and removes pollutants such as leaves and branches on the surface of the protective net 2 by jetting, thereby effectively avoiding the problem that pollutants attached to the protective net 2 form shadow areas on the surface of the photovoltaic panel 1 and affect the efficiency of photovoltaic power generation.

Claims

1. A self-cleaning roof photovoltaic protection net, characterized in that: The invention comprises a transparent protective component covering the photovoltaic panel (1), wherein the transparent protective component comprises two mutually parallel axial support rods arranged on both sides of the photovoltaic panel (1), the two axial support rods are aligned at both ends, an upwardly curved arc support rod is connected between the ends of the two axial support rods, and the two arc support rods and the two axial support rods form a protective frame, and a protective net (2) component is installed on the protective frame.

2. A self-cleaning roof photovoltaic protection net according to claim 1, characterized in that: The protective net (2) component comprises a grid frame arranged in a crisscross pattern and a protective net (2) made of a light-transmitting material arranged on the grid frame.

3. A self-cleaning roof photovoltaic protection net according to claim 2, characterized in that: The material of the protective net (2) is one or more of light-transmitting polymethyl methacrylate, polystyrene or polycarbonate.

4. A self-cleaning roof photovoltaic protection net according to claim 3, characterized in that: The mesh size of the protective net (2) is between 0.5 mm and 5 mm.

5. A self-cleaning system, characterized in that: A self-cleaning roof photovoltaic protection net used for cleaning any one of claims 1 to 4.

6. A self-cleaning system according to claim 5, characterized in that: It comprises a self-cleaning system disposed between the photovoltaic panel (1) and the protective net (2), and a pollutant identification system disposed above the protective net (2), wherein the self-cleaning system is connected to the pollutant identification system; The pollutant identification system comprises an image sensor (14) and a control unit (13) electrically connected to the image sensor (14); The self-cleaning system comprises a cleaning device and a driving device (12) connected to the cleaning device, and the driving device (12) is electrically connected to the control unit (13).

7. A self-cleaning system according to claim 6, characterized in that: The cleaning device comprises a walking track, a cleaning head (5), an air inlet and outlet pipe (6), an air suction pipe (7), an air jet pipe (8), a valve (9), an air compressor (11) and a vacuum cleaner main unit (10); the cleaning head (5) is connected to one end of the air inlet and outlet pipe (6); the other end of the air inlet and outlet pipe (6) is connected to the air suction pipe (7) and the air jet pipe (8) respectively; the air suction pipe (7) and the air jet pipe (8) are both connected to the driving device (12); The vacuum cleaner main unit (10) and the air compressor (11) are respectively arranged on the connection between the air intake pipe (7) and the air injection pipe (8), and a valve (9) is arranged on the connection between the air intake pipe (7) and the air injection pipe (8); The cleaning head (5) is slidably arranged on the walking track.

8. A self-cleaning system according to claim 7, characterized in that: The walking track comprises two axial tracks (3) respectively arranged to fit the corresponding axial support rods, and an arc track (4) arranged to fit any one of the arc support rods, and the two ends of the arc track (4) are respectively connected to the two axial tracks (3).

9. A self-cleaning system according to claim 8, characterized in that: The outlet of the cleaning head (5) is circular and is slidably mounted on the arc track (4). The diameter of the cleaning head (5) is 0.01 to 0.02 m.

10. A self-cleaning system according to claim 7, characterized in that: The suction strength of the vacuum cleaner is 2000-5000 Pa; the air pressure of the air compressor (11) is 6000-8000 Pa.

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