Device for improving photovoltaic power generation efficiency

Abstract

The embodiment of the utility model provides a device for improving the photovoltaic power generation efficiency, and the device comprises a reflector which is used for improving the efficiency of a photovoltaic module, and is disposed at the periphery of the photovoltaic module, and is used for reflecting the sunlight which is not absorbed by the photovoltaic module; the condenser is arranged below the reflector and is used for reflecting sunlight and guiding the sunlight to the reflector; the connecting line system is connected to the photovoltaic module and used for transmitting electric energy generated by the photovoltaic module; the heat dissipation device is arranged below the photovoltaic module, the heat dissipation device is provided with a cooling medium, and heat is taken away through flowing of the cooling medium; the radiating device is also provided with a plurality of radiating fins; an automatic cleaning device is arranged above or around the photovoltaic module; the surface of the reflector is coated with a dustproof coating, and the dustproof coating has hydrophobicity. Through the scheme of the embodiment of the invention, the problems that the heat dissipation performance is poor and manual dust removal is needed can be solved.

Description

Technical Field

[0001] The present disclosure belongs to the field of photovoltaic technology, and particularly relates to a device for improving photovoltaic power generation efficiency. Background Art

[0002] A photovoltaic efficiency-enhancing device is a device used in solar photovoltaic power generation systems to improve the energy conversion efficiency of photovoltaic modules. This device typically utilizes specialized materials and designs to maximize the absorption of solar energy and convert it into electricity. It can increase solar energy utilization by optimizing the angle of incidence of light and reducing reflection losses, thereby improving the overall system's power generation efficiency.

[0003] However, this device suffers from poor heat dissipation and the need for manual dust removal. Prolonged operation generates significant heat, and poor heat dissipation can affect proper operation and reduce power generation efficiency. Furthermore, dust and dirt can accumulate on the device's surface during use, hindering the absorption and conversion of solar energy. Therefore, regular manual dust removal is necessary to maintain proper operation and ensure optimal power generation performance. Summary of the Invention

[0004] In view of this, an embodiment of the present disclosure provides a device for improving photovoltaic power generation efficiency, which at least partially solves the problems existing in the prior art.

[0005] The present invention discloses a device for improving photovoltaic power generation efficiency, which is used to improve the efficiency of photovoltaic modules, comprising:

[0006] Reflectors are placed around the photovoltaic modules to reflect sunlight that is not absorbed by the photovoltaic modules;

[0007] a concentrator disposed below the reflector for reflecting sunlight and directing it onto the reflector; and

[0008] a connecting line system connected to the photovoltaic panels for transmitting electrical energy generated by the photovoltaic panels;

[0009] The heat dissipation device is provided below the photovoltaic module, and the heat dissipation device is provided with a cooling medium and removes heat through the flow of the cooling medium;

[0010] The heat dissipation device also has a plurality of heat dissipation fins;

[0011] An automatic cleaning device is installed above or around the photovoltaic panels; and

[0012] A dustproof coating is coated on the surface of the reflector, and the dustproof coating is hydrophobic.

[0013] Preferably, the reflector is a reflective concave mirror.

[0014] Preferably, the concentrator is a reflector.

[0015] Preferably, the heat dissipation device is in direct contact with the photovoltaic assembly through a thermally conductive material layer.

[0016] Preferably, the plurality of heat sinks are in contact with the photovoltaic assembly via thermally conductive adhesive.

[0017] Preferably, the automatic cleaning device includes a robotic arm system, the robotic arm system includes a brush and a water sprayer, the brush covers the entire surface of the photovoltaic component by rotating and moving, and the water sprayer is used to release water flow.

[0018] Preferably, the dustproof coating is a dustproof coating containing nano-silicone particles and a polymer matrix.

[0019] Preferably, a transparent protective layer is provided on the dustproof coating.

[0020] Preferably, the angle of the reflector is adjustable.

[0021] Preferably, the concentrator is a multi-layer structure and includes at least one transparent isolation layer.

[0022] The disclosed embodiments provide a device for improving the efficiency of photovoltaic power generation, which is used to improve the efficiency of photovoltaic modules. The device includes: a reflector, which is arranged around the photovoltaic module and is used to reflect sunlight that is not absorbed by the photovoltaic module; a concentrator, which is arranged below the reflector and is used to reflect sunlight and direct it onto the reflector; and a connecting line system, which is connected to the photovoltaic module and is used to transmit the electrical energy generated by the photovoltaic module; a heat dissipation device, which is arranged below the photovoltaic module and is provided with a cooling medium and removes heat through the flow of the cooling medium; the heat dissipation device also has multiple heat dissipation fins; an automatic cleaning device is provided above or around the photovoltaic module; and a dust-proof coating is coated on the surface of the reflector, and the dust-proof coating is hydrophobic. The solution of the disclosed embodiments can solve the problems of poor heat dissipation performance and the need for manual dust removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the exemplary implementation methods of the embodiments of the present disclosure, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the embodiments of the present disclosure 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 creative work.

[0024] Figure 1This is an overall structural diagram of a device for improving photovoltaic power generation efficiency provided by the utility model;

[0025] Figure 2 A cross-sectional view of an automatic cleaning device for improving photovoltaic power generation efficiency provided by the utility model;

[0026] Figure 3 This is a partial enlarged view of a heat dissipation device for improving photovoltaic power generation efficiency provided by the utility model;

[0027] Figure 4 This is a partially enlarged view of a reflector of a device for improving photovoltaic power generation efficiency provided by the utility model.

[0028] Figure numerals: 1-photovoltaic module; 2-reflector; 3-concentrator; 4-connecting line system; 5-heat dissipation device; 6-heat sink; 7-automatic cleaning device; 8-dust-proof coating; 9-polymer matrix; 10-isolation layer; 11-thermal conductive material layer; 12-transparent protective layer; 13-thermal conductive adhesive; 14-robotic arm system; 15-brush; 16-water sprayer; 17-nanosilicone particles. DETAILED DESCRIPTION

[0029] In order to make the objectives, technical solutions and advantages of the embodiments of the present disclosure more clear, the embodiments of the present disclosure are further described in detail below in combination with the embodiments and drawings. The schematic implementation methods of the embodiments of the present disclosure and their descriptions are only used to explain the embodiments of the present disclosure and are not intended to limit the embodiments of the present disclosure.

[0030] Photovoltaic power generation, a technology that converts solar energy into electricity, has been widely used in various fields. However, due to factors such as the scattering and reflection of sunlight, photovoltaic modules suffer certain efficiency losses in practical applications. To improve the efficiency of photovoltaic power generation, a new device has been designed.

[0031] refer to Figure 1 The device consists of three main parts: a reflector 2, a concentrator 3 and a connecting line system 4.

[0032] First, reflector 2 is installed around photovoltaic module 1. Its function is to collect and reflect sunlight that is not absorbed by photovoltaic module 1. Because sunlight has a wide range of incident angles, reflector 2 needs to have good refractive properties and be able to effectively reflect scattered sunlight onto concentrator 3.

[0033] Next is the concentrator 3, located below the reflector 2. The focused sunlight is directed through the concentrator onto the photovoltaic module 1 located below it. The concentrator, which can be a lens or concave mirror, refocuses scattered sunlight and increases its intensity. Through the concentrator 3, sunlight is more concentrated onto the photovoltaic module 1, thereby improving its power generation efficiency.

[0034] Finally, there is the connecting line system 4, which connects to the photovoltaic module 1 and transmits the power generated by the photovoltaic module 1. The connecting line system 4 needs to have good conductivity and stability to ensure that the power generated by the photovoltaic module 1 can be effectively transmitted to external equipment or storage devices.

[0035] The entire device operates as follows: When sunlight strikes reflector 2, a portion is absorbed and converted into electrical energy, while another portion is reflected. The reflected sunlight is then refocused by the concentrator, increasing its angle of incidence and intensity. Finally, this focused sunlight is transmitted via the connecting wiring system 4 to the connected photovoltaic panels 1, where it is further converted into electrical energy.

[0036] By using this device to improve photovoltaic power generation efficiency, scattered and unabsorbed solar energy can be effectively utilized and converted into electricity for power supply or storage purposes. Compared to traditional methods, the power generation efficiency of photovoltaic modules 1 is significantly improved within the same area. This not only reduces dependence on traditional energy sources, but also helps reduce energy consumption and environmental pollution.

[0037] Furthermore, the device offers a degree of flexibility and adjustability. The reflector 2 and concentrator 3 can be adjusted and optimized based on actual needs to accommodate variations in sunlight in different regions, seasons, or weather conditions. Furthermore, the connecting line system 4 can be expanded or modified as needed to meet varying scale and power requirements.

[0038] In a specific embodiment, a curved surface made of a highly reflective material, such as a mirror or a concave lens, can be used as the reflector 2. These materials can effectively reflect sunlight that is not absorbed by the photovoltaic module 1 and guide it onto the photovoltaic module 1.

[0039] The concentrator 3 can be a lens or a reflector, and through its special shape and material, it can collect the reflected sunlight and focus it on a small area. This can increase the density of solar energy in the area, thereby increasing the efficiency of solar energy utilization.

[0040] The connection line system 4 may use wires, cables or other transmission devices to ensure that the electrical energy generated by the photovoltaic assembly 1 can be effectively transmitted and supplied to other devices.

[0041] In a specific embodiment, further reference is made to Figure 2 The present invention discloses a device for improving photovoltaic power generation efficiency, which includes a heat dissipation device 5, which is arranged under the photovoltaic module 1 to improve the heat dissipation performance and effectively reduce the temperature.

[0042] Specifically, the following technical means can be adopted. First, a heat dissipation device 5 is installed at the bottom or around the photovoltaic module 1, and in one embodiment, an aluminum heat sink 6 or a fan. These heat dissipation devices can be in direct contact with the photovoltaic module 1 through a heat-conducting material to better conduct and disperse the generated heat. Secondly, a cooling medium (such as water or air) is introduced into the heat dissipation device 5, and the excess heat is taken away by flowing the cooling medium. In addition, a temperature sensor and a control system can be used to monitor and adjust the temperature of the photovoltaic module 1, and automatically start and stop the heat dissipation device as needed.

[0043] In one embodiment, several aluminum heat sinks 6 can be mounted on the bracket below the photovoltaic module 1, ensuring close contact with the module 1 to promote conductive heat transfer. A fan is also installed on the bracket, and a control system monitors the temperature of the photovoltaic module 1. When the temperature exceeds a set threshold, the control system activates the fan to increase heat dissipation. Furthermore, cooling water can be introduced into the heat sink 5 and circulated by a circulating pump to further enhance heat dissipation.

[0044] By applying the above technical means, the device can effectively improve the efficiency of photovoltaic power generation. The use of the heat dissipation device 5 can reduce the operating temperature of the photovoltaic module 1, reduce energy loss caused by high temperature, and extend the life of the photovoltaic module 1.

[0045] In a specific embodiment, the present disclosure provides a device for improving photovoltaic power generation efficiency, wherein the heat dissipation device 5 includes a plurality of heat dissipation fins 6 for increasing the surface area and improving the heat dissipation effect.

[0046] In one embodiment, Figure 3 As shown, in the design of a photovoltaic power generation device, a heat sink 5 can be installed on a photovoltaic panel or solar cell module. Each heat sink 6 is precisely arranged on the surface of the photovoltaic panel or solar cell module and is in close contact with it to maximize the surface area. These heat sinks 6 can be made of a material with good thermal conductivity, such as aluminum alloy or copper. In addition, heat conductive adhesive 13 or other suitable connection methods can be used to firmly fix the heat sink 6 to the photovoltaic panel or solar cell module.

[0047] By increasing the surface area and improving heat dissipation, this design effectively enhances the overall heat dissipation performance of the photovoltaic power generation device. When solar radiation strikes the photovoltaic panel or solar cell module, the resulting excess heat is rapidly transferred to the contacting heat sink 6. The expanded surface area and optimized heat dissipation of the heat sink 6 then rapidly dissipate the excess heat into the surrounding environment. This effectively lowers the temperature of the photovoltaic panel or solar cell module, reduces power loss due to overheating, and improves the overall power generation efficiency of the photovoltaic power generation device.

[0048] In a specific embodiment, the present disclosure provides a device for improving photovoltaic power generation efficiency, which includes an automatic cleaning device 7 disposed above or around a photovoltaic module 1. The automatic cleaning device 7 can automatically remove dust and dirt periodically or as needed, thereby keeping the surface of the photovoltaic module 1 clean.

[0049] In one embodiment, reference Figure 1 A robotic arm system 14 equipped with cleaning tools such as brushes 15 and water sprayers 16 can be installed above or around the photovoltaic module 1. When dust and dirt accumulation is detected, the robotic arm system 14 will start and move to the corresponding position to perform cleaning operations. The brush 15 on the robotic arm can rotate and move to cover the entire surface of the photovoltaic module 1 and brush off dust and dirt. At the same time, the water sprayer 16 can release an appropriate amount of water to help rinse away residual substances. In addition, sensors can be used to monitor the degree of contamination on the surface of the photovoltaic module 1 and trigger an automatic cleaning process based on preset conditions.

[0050] The automatic cleaning device 7 designed in this way can effectively reduce the obstruction and impact of dust and dirt on the photovoltaic module 1, thereby improving the efficiency of photovoltaic power generation. At the same time, regular or as needed automatic cleaning operations can also reduce the need for manual maintenance and reduce operating costs.

[0051] In a specific embodiment, referring to Figure 2 The device disclosed herein for improving photovoltaic power generation efficiency is characterized in that a dustproof coating 8 is coated on the surface of the reflector 2 to reduce dust deposition and lower the cleaning frequency.

[0052] Specifically, the following technical measures can be employed: First, a specialized dustproof coating is applied to the surface of the reflector 2. This coating can be a composite material composed of polymers, nanoparticles, or other materials, and has antistatic and anti-adhesion properties, effectively reducing the deposition of dust particles on the surface.

[0053] In one embodiment, Figure 4As shown, a dust-proof coating 8 containing nanosiloxane particles 17 and a polymer matrix 9 can be used. This coating acts as a microcatalyst, adsorbing pollutants from the air and breaking them down into harmless substances through chemical reactions. The coating also exhibits super-hydrophobicity and self-cleaning properties, making it difficult for dust to adhere to the surface and allowing rainwater to easily wash away any remaining pollutants.

[0054] In addition, a transparent protective layer 12 may be added during the preparation process to enhance the durability and scratch resistance of the coating, thereby ensuring that the coating will not be damaged or peeled off during long-term use.

[0055] By applying a dustproof coating 8 to the surface of the reflector 2, the device can effectively reduce dust deposition and reduce the frequency of cleaning. This not only improves the efficiency of the photovoltaic power generation system, but also reduces maintenance costs and the workload of manual cleaning.

[0056] In a specific embodiment, the present invention discloses a device for improving photovoltaic power generation efficiency, the main feature of which is to use an adjustable angle reflector 2 to automatically adjust the reflection angle according to the position of the sun to maximize the light absorption efficiency.

[0057] In one embodiment, the device may include a reflector 2 mounted above a photovoltaic panel. The reflector 2 can be adjusted mechanically or electrically. When the sun's position changes, a sensor detects the sun's position and transmits this information to a control system. The control system calculates the optimal reflection angle based on this information and adjusts the reflector 2 to the corresponding position via a drive mechanism.

[0058] In one embodiment, during the morning and evening hours, when the sun is low and the radiation is weak, the control system tilts reflector 2 to increase the angle of incidence between the incident light and the photovoltaic panel, thereby improving absorption efficiency. Meanwhile, during midday, when the sun is high and the radiation is intense, the control system keeps reflector 2 parallel to the ground to reduce shadowing and energy loss.

[0059] This technology enables the creation of an adjustable reflector2, ensuring the optimal incident angle at all times and seasons, thereby maximizing photovoltaic power generation efficiency. The application of this device can improve solar energy utilization, reduce energy waste, and have significant implications for the promotion and application of renewable energy.

[0060] In a specific embodiment, the present disclosure provides a device for improving photovoltaic power generation efficiency, wherein a fan system is provided above the concentrator 3 to enhance air flow and improve heat dissipation performance.

[0061] In one embodiment, this feature can be achieved by installing one or more fans on the top or side of the concentrator 3. These fans can be powered by a power supply and controlled by a control system. When solar light is concentrated on the concentrator 3, a large amount of heat is generated. To prevent overheating damage and improve photovoltaic power generation efficiency, the fan system is activated to increase the flow of surrounding air. This helps to remove heat and maintain the temperature of the concentrator 3 and its surrounding environment within a suitable range.

[0062] Furthermore, the fan system can be adjusted and controlled as needed. In one embodiment, at lower temperatures, the fan may not need to run at full power; only partial power may be required to meet cooling requirements. Therefore, a sensor can be used to monitor the ambient temperature and automatically adjust the fan speed or on / off state according to preset parameters.

[0063] In a specific embodiment, the present disclosure provides a device for improving photovoltaic power generation efficiency, which adopts a multi-layer structure design of the reflector 2 and the concentrator 3, and adds an isolation layer 10 to prevent dust accumulation.

[0064] Specifically, the device utilizes a multi-layered reflector 2 and concentrator 3 to effectively concentrate sunlight onto the photovoltaic cells, thereby improving energy conversion efficiency. Furthermore, an isolation layer 10 is incorporated into the device's design. Its primary function is to prevent the accumulation of foreign matter, such as dust and impurities, on the surfaces of the reflector 2 and concentrator 3. This prevents dust from affecting solar energy absorption and reduces the need for cleaning and maintenance.

[0065] In one embodiment, to achieve this feature, a transparent or translucent isolation layer 10, such as glass or plastic film, can be placed on top of or around the device. This isolation layer 10 not only protects the reflector 2 and concentrator 3 from external environmental factors but also reduces direct contact between dust, rain, and the device surface. Furthermore, during installation, dust-proofing devices, such as filters and sealing strips, can be considered to further enhance the effectiveness of the isolation layer 10.

[0066] The working process of the device for improving photovoltaic power generation efficiency is as follows:

[0067] In a photovoltaic power station, multiple photovoltaic modules 1 are installed, each of which includes a reflector 2 and a concentrator 3. When sunlight shines on the photovoltaic module, some of the sunlight is absorbed and converted into electrical energy, but some sunlight remains unabsorbed.

[0068] At this point, the reflector 2 plays a key role. It is placed around each photovoltaic module 1 and has a reflective function. Unabsorbed sunlight is reflected back by the reflector and directed above the concentrator 3.

[0069] The concentrator 3 is located below the reflector and is designed to focus and concentrate the reflected sunlight. By adjusting the focus point position and angle, the concentrated solar energy is directed to the corresponding photovoltaic module.

[0070] Finally, a connecting line system 4 is connected to each photovoltaic module 1 to transmit the electrical energy generated by these modules. In this way, during the operation of the entire device, by utilizing reflection and focusing technology, the unabsorbed solar energy can be maximized, thereby improving the efficiency of photovoltaic power generation.

[0071] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the embodiments of the present disclosure. It should be understood that the above description is only a specific implementation method of the embodiments of the present disclosure and is not intended to limit the scope of protection of the embodiments of the present disclosure. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the embodiments of the present disclosure should be included in the scope of protection of the embodiments of the present disclosure.

Claims

1. A device for improving photovoltaic power generation efficiency, used to improve the efficiency of a photovoltaic module (1), characterized in that: include: A reflector (2) is arranged around the photovoltaic module (1) and is used to reflect sunlight that is not absorbed by the photovoltaic module (1); A concentrator (3) is arranged below the reflector (2) and is used to reflect sunlight and direct it onto the reflector (2); as well as A connecting line system (4) connected to the photovoltaic module (1) for transmitting electrical energy generated by the photovoltaic module; It also comprises a heat dissipation device (5) which is arranged below the photovoltaic module (1), and the heat dissipation device (5) is provided with a cooling medium, and heat is removed by the flow of the cooling medium; The heat dissipation device (5) further comprises a plurality of heat dissipation fins (6); An automatic cleaning device (7) is arranged above or around the photovoltaic module (1); and The surface of the reflector (2) is coated with a dustproof coating (8), and the dustproof coating (8) is hydrophobic.

2. The device for improving photovoltaic power generation efficiency according to claim 1, characterized in that: The reflector (2) is a reflective concave mirror.

3. The device for improving photovoltaic power generation efficiency according to claim 1, characterized in that: The condenser (3) is a reflecting mirror.

4. The device for improving photovoltaic power generation efficiency according to claim 1, characterized in that: The heat dissipation device (5) is in direct contact with the photovoltaic module (1) via a heat-conducting material layer (11).

5. The device for improving photovoltaic power generation efficiency according to claim 1, characterized in that: The plurality of heat sinks (6) are in contact with the photovoltaic assembly (1) via a heat-conducting adhesive (13).

6. The device for improving photovoltaic power generation efficiency according to claim 1, characterized in that: The automatic cleaning device (7) comprises a robotic arm system, the robotic arm system (14) comprises a brush (15) and a water sprayer (16), the brush (15) covers the entire surface of the photovoltaic module by rotating and moving, and the water sprayer (16) is used to release water flow.

7. The device for improving photovoltaic power generation efficiency according to claim 1, characterized in that: The dustproof coating (8) is a dustproof coating containing nano-siloxane particles (17) and a polymer matrix (9).

8. The device for improving photovoltaic power generation efficiency according to claim 7, characterized in that: A transparent protective layer (12) is provided on the dustproof coating (8).

9. The device for improving photovoltaic power generation efficiency according to claim 1, characterized in that: The angle of the reflector (3) can be adjusted.

10. The device for improving photovoltaic power generation efficiency according to claim 1, characterized in that: The concentrator (2) is a multi-layer structure and comprises at least one transparent isolation layer (10).

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