Snow removing mechanism and snow removing system for photovoltaic module

Abstract

The utility model relates to the technical field of photovoltaic cleaning, in particular to a snow removing mechanism and a snow removing system for a photovoltaic module, the photovoltaic module is formed by splicing a plurality of photovoltaic panels, and the photovoltaic module is obliquely installed relative to the ground through a support; the snow removing mechanism comprises a snow depth sensor, an illumination acquisition instrument, an electric heating wire and a control box, the control box adopts a microcontroller, and the snow depth sensor, the illumination acquisition instrument and the electric heating wire are all electrically connected with the control box; the system comprises a main control module, and a snow depth acquisition module, an illumination acquisition module and a heating module which are electrically connected with the main control module, according to the utility model, the photovoltaic assembly is locally heated through the electric heating wire, so that the battery piece part on the photovoltaic panel is exposed, the photovoltaic panel receives light through the exposed battery piece to generate a hot spot effect to quickly heat the photovoltaic panel, the purpose of quickly removing snow is achieved by utilizing the self gravity of accumulated snow, the snow removing efficiency is high, and the energy consumption is saved.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic cleaning technology, specifically to a snow removal mechanism and snow removal system for photovoltaic modules. Background Technology

[0002] Solar photovoltaic power plants are greatly affected by the natural environment. In winter, when it snows, a lot of snow will remain on the surface of the solar photovoltaic panels. This will not only damage the photovoltaic panels, but also block the surface of the solar photovoltaic panels, affecting the power generation efficiency of solar energy.

[0003] Existing technologies use snowplows to generate airflow to blow snow or brushes to sweep snow. This method requires the snowplow to move continuously and clean each photovoltaic panel one by one. For power plants with a large number of photovoltaic panels, the cleaning efficiency is low, which affects the normal operation of the solar photovoltaic power plant. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a snow removal mechanism and snow removal system for photovoltaic modules, so as to solve the problem of low working efficiency in the prior art of using a snow removal machine to continuously move and sweep each photovoltaic panel one by one.

[0005] To achieve the above and other related objectives, this utility model provides a photovoltaic module snow removal mechanism, including a photovoltaic module, which is composed of several photovoltaic panels spliced ​​together; the photovoltaic module is installed at an angle relative to the ground via a bracket;

[0006] The snow removal mechanism includes:

[0007] Snow depth sensor, used to measure snow depth;

[0008] A light acquisition device is used to collect information about the light irradiation of photovoltaic modules.

[0009] An electric heating wire, which is installed at least at the upper and lower ends of the photovoltaic module, is used to convert electrical energy into heat energy to melt the snow deposited on the photovoltaic module;

[0010] The control box is equipped with a microcontroller, and the snow depth sensor, light acquisition instrument, and electric heating wire are all electrically connected to the control box.

[0011] The photovoltaic module snow removal mechanism also includes a support rod, the upper end of which is provided with a baffle that is horizontally distributed relative to the ground, and a snow depth sensor is mounted on the upper end of the baffle; the control box is mounted on the side end of the support rod and located below the baffle.

[0012] In one embodiment of the present invention, an aluminum frame is provided on the circumferential edge of the photovoltaic panel, and an electric heating wire is fixed to the aluminum frame of the photovoltaic panel.

[0013] In one embodiment of this utility model, the electric heating wire is a flame-retardant self-regulating heat tracing cable.

[0014] In one embodiment of this utility model, the control box is equipped with a power supply device for supplying power to the microcontroller, and the microcontroller supplies power to the snow depth sensor, the light acquisition instrument, and the electric heating wire.

[0015] A photovoltaic module snow removal system includes the aforementioned photovoltaic module snow removal mechanism, comprising a main control module and a snow depth acquisition module, a light intensity acquisition module, and a heating module electrically connected to the main control module. A microcontroller is connected to the main control module, a snow depth sensor is connected to the snow depth acquisition module, a light intensity acquisition instrument is connected to the light intensity acquisition module, and an electric heating wire powers the heating module.

[0016] In one embodiment of this utility model, the main control module is provided with snow depth value and light intensity value. When the snow depth value collected reaches the set snow depth value, the main control module controls the heating module to start heating; when the light intensity value collected reaches the set light intensity value, the main control module controls the heating module to turn off heating.

[0017] As described above, the photovoltaic module snow removal mechanism and snow removal system of this utility model have the following beneficial effects:

[0018] 1. The snow removal mechanism uses a control box to receive signals from snow depth sensors and light acquisition instruments, and controls electric heating wires to heat the photovoltaic panels. The electric heating wires are flame-retardant and self-regulating heat tracing cables. When heated, they melt the snow near the heating cable and transfer heat to the photovoltaic panel through the aluminum frame located on the periphery of the photovoltaic panel, exposing the solar cells. The photovoltaic panel receives sunlight through the solar cells, generating a hot spot effect that quickly heats the panel. At the same time, the heat energy generated on the photovoltaic panel melts the ice layer on the surface of the photovoltaic panel, preventing snow from adhering. The snow then falls off in whole pieces due to its own weight, achieving the purpose of clearing snow from the entire photovoltaic panel without having to blow every area, thus saving energy. For photovoltaic power stations with a large number of photovoltaic panels, it is only necessary to extend the length of the electric heating wires to connect each photovoltaic panel to perform snow removal operations on a large number of photovoltaic panels at the same time, greatly improving the snow removal efficiency of solar photovoltaic power stations and ensuring the normal operation of solar photovoltaic power stations in snowy winter weather.

[0019] 2. The snow removal system, by setting snow depth and illumination values, can control the electric heating wires to melt snow after snowfall stops when the snow depth sensor detects a certain amount of snowfall. At the same time, the illumination collector synchronously detects the illumination of the photovoltaic modules. When there is a lot of snow cover, the photovoltaic modules receive less illumination. When the snow is removed, the illumination received by the photovoltaic modules increases. When the illumination increases to a certain level, the snow melting is completed, and the electric heating wires can be turned off.

[0020] 3. Photovoltaic panels themselves absorb solar energy and generate heat, but when there is too much snow, it will cover the entire solar cell, preventing the photovoltaic module from absorbing solar energy. The core design of this utility model is to use electric heating wires to locally heat the photovoltaic module, exposing the solar cells on the photovoltaic panel. The exposed solar cells receive sunlight and generate a hot spot effect to quickly heat the photovoltaic panel. The snow is also removed quickly by its own weight, resulting in high snow removal efficiency and energy saving. Attached Figure Description

[0021] Figure 1 The diagram shown is a structural schematic of the snow removal mechanism for photovoltaic modules disclosed in Example 1.

[0022] Figure 2 Displayed as Figure 1 Enlarged view of point A in the middle.

[0023] Figure 3 The diagram shown is a block diagram of the photovoltaic module snow removal system disclosed in Example 2.

[0024] Component designation explanation

[0025] 1. Photovoltaic panel; 11. Aluminum frame; 2. Bracket; 3. Snow depth sensor; 4. Light collector; 5. Electric heating wire; 6. Control box; 7. Power supply unit; 8. Support rod; 9. Baffle;

[0026] Main control module 10; snow depth acquisition module 20; light acquisition module 30; heating module 40; power supply module 50. Detailed Implementation

[0027] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0028] Please see Figures 1 to 3 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the disclosed technical content. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0029] Example 1, please refer to Figure 1 , Figure 2 This embodiment provides a photovoltaic module snow removal mechanism, including a photovoltaic module, which is composed of several photovoltaic panels 1 spliced ​​together; the photovoltaic module is installed at an angle relative to the ground via a bracket 2.

[0030] The snow removal mechanism includes a snow depth sensor 3, a light source 4, an electric heating wire 5, and a control box 6. The snow depth sensor 3 uses ultrasonic or laser ranging technology to calculate the snow depth by measuring the distance between the sensor and the ground, and is used to measure the snow depth. The light source 4 is used to collect the light irradiation of the photovoltaic module. The electric heating wire 5 is a flame-retardant self-limiting heat tracing cable, and is installed at least at the top and bottom of the photovoltaic module. Specifically, an aluminum frame 11 is provided on the circumferential edge of the photovoltaic panel 1, and the electric heating wire 5 is fixed to the aluminum frame 11 of the photovoltaic panel 1 to convert electrical energy into heat energy to melt the snow deposited on the photovoltaic module. The control box 6 uses a microcontroller, and the snow depth sensor 3, the light source 4, and the electric heating wire 5 are all electrically connected to the control box 6. The control box 6 has a built-in power supply 7 to supply power to the microcontroller, and the microcontroller supplies power to the snow depth sensor 3, the light source 4, and the electric heating wire 5.

[0031] The snow removal mechanism uses a control box 6 to receive signals from the snow depth sensor 3 and the light acquisition instrument 4, and controls the electric heating wire 5 to heat the photovoltaic panel 1. The electric heating wire 5 uses a flame-retardant self-limiting heat tracing cable. When heated, it melts the snow near the heat tracing cable and transfers heat to the photovoltaic panel 1 through the aluminum frame 11 on the circumferential edge of the photovoltaic panel 1, melting some of the snow. This exposes the solar cells of the photovoltaic panel 1. The photovoltaic panel 1 receives sunlight through the solar cells, which generates a hot spot effect, quickly heating the photovoltaic panel 1. At the same time, it generates heat energy on the photovoltaic panel 1 to melt the ice layer on the surface of the photovoltaic panel 1, making it impossible for snow to adhere. The snow then falls off entirely by its own weight, achieving the purpose of clearing the snow from the entire photovoltaic panel 1 without having to blow every area, thus saving energy. For photovoltaic power stations containing a large number of photovoltaic panels 1, it is only necessary to extend the length of the electric heating wire to connect each photovoltaic panel 1 to carry out snow removal operations on a large number of photovoltaic panels 1 at the same time, which greatly improves the snow removal efficiency of solar photovoltaic power stations and ensures the normal operation of solar photovoltaic power stations in snowy winter weather.

[0032] The photovoltaic module snow removal mechanism also includes a support rod 8. The upper end of the support rod 8 is provided with a baffle 9 that is horizontally distributed relative to the ground. The snow depth sensor 3 is installed on the upper end of the baffle 9 to ensure the horizontality of the snow depth sensor 3 and improve the accuracy of the snow thickness measurement data. The control box 6 is installed on the side of the support rod 8 and located below the baffle 9. The baffle 9 can protect the control box 6 from wind and snow.

[0033] Example 2, based on Example 1, provides a photovoltaic module snow removal system. Please refer to [link / reference]. Figure 3 The snow removal system includes a main control module 10 and a snow depth acquisition module 20, a light intensity acquisition module 30, a heating module 40, and a power supply module 50 electrically connected to the main control module 10. A microcontroller is connected to the main control module 10, a snow depth sensor 3 is connected to the snow depth acquisition module 20, a light intensity acquisition device 4 is connected to the light intensity acquisition module 30, an electric heating wire 5 powers the heating module 40, and a power supply device 7 is connected to the power supply module 50. The main control module 10 has snow depth and light intensity values. When the snow depth acquisition value reaches the set snow depth value, the main control module 10 controls the heating module 40 to start heating. When the light intensity acquisition values ​​all reach the set light intensity values, the main control module 10 controls the heating module 40 to turn off heating.

[0034] The snow removal system, by setting snow depth and illumination values, can control the electric heating wire 5 to melt snow after snowfall stops when the snow depth sensor 3 detects that the snow depth has reached a certain amount. At the same time, the illumination collector 4 synchronously detects the illumination of the photovoltaic module. When there is a lot of snow, the photovoltaic module receives less illumination. When the snow is removed, the photovoltaic module receives more illumination. When the illumination increases to a certain level, the snow melting is completed, and the electric heating wire 5 can be turned off.

[0035] In summary, while photovoltaic panel 1 absorbs solar energy and generates heat, excessive snow accumulation can cover the entire solar cell area, preventing the photovoltaic module from absorbing solar energy. The core design of this invention lies in using electric heating wire 5 to locally heat the photovoltaic module, exposing the solar cells on photovoltaic panel 1. The exposed cells then receive sunlight, generating a hot spot effect that rapidly heats the photovoltaic panel 1. Furthermore, the weight of the accumulated snow is used for rapid snow removal, resulting in high snow removal efficiency and energy savings. Therefore, this invention effectively overcomes the various shortcomings of existing technologies and possesses high industrial application value.

[0036] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A snow-removing mechanism for a photovoltaic assembly, comprising a photovoltaic assembly formed by a plurality of photovoltaic panels; the photovoltaic assembly is installed obliquely relative to the ground by a support; characterized in that the snow-removing mechanism comprises: a snow depth sensor for measuring the depth of accumulated snow; a light collector for collecting the light irradiation of the photovoltaic assembly; an electric heating wire, which is arranged at least at the upper end and the lower end of the photovoltaic assembly, for converting electric energy into heat energy to melt the accumulated snow deposited on the photovoltaic assembly; a control box, which adopts a microcontroller, and the snow depth sensor, the light collector and the electric heating wire are electrically connected to the control box; the snow-removing mechanism further comprises a support rod, the upper end of the support rod is provided with a baffle horizontally distributed relative to the ground, and the snow depth sensor is arranged at the upper end of the baffle; the control box is arranged at the side end of the support rod and below the baffle.

2. The snow removal mechanism for a photovoltaic assembly of claim 1, wherein: an aluminum frame is arranged on the circumferential edge of the photovoltaic panel, and the electric heating wire is fixed to the aluminum frame of the photovoltaic panel.

3. The snow removal mechanism for a photovoltaic assembly of claim 2, wherein: the electric heating wire adopts a flame-retardant self-limiting heating tape.

4. The snow removal mechanism for a photovoltaic assembly of claim 1, wherein: the control box is provided with a power supply device for supplying power to the microcontroller and supplying power to the snow depth sensor, the light collector and the electric heating wire through the microcontroller.

5. A snow removal system for a photovoltaic module comprising the snow removal mechanism of any one of claims 1-4, wherein: the control box comprises a main control module and a snow depth collection module, a light collection module and a heating module electrically connected to the main control module, the microcontroller is connected to the main control module, the snow depth sensor is connected to the snow depth collection module, the light collector is connected to the light collection module, and the electric heating wire supplies power to the heating module.

6. The photovoltaic module snow removal system of claim 5, wherein: the main control module is provided with a snow depth value and a light value, when the collected value of the snow depth reaches the set snow depth value, the main control module controls the heating module to start heating; when the collected value of the light reaches the set light value, the main control module controls the heating module to stop heating.

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