Photovoltaic heat dissipation system

Abstract

The utility model discloses a photovoltaic heat dissipation system, which belongs to the technical field of solar photovoltaic heat dissipation, and comprises a substrate and a fan arranged on an air hole of the substrate, the shape and the size of the substrate are matched with those of a single photovoltaic panel, a motor and fan blades are arranged in the fan, and the fan blades are arranged on the substrate. And an electric control system of the photovoltaic panel is electrically connected with a controller of the motor and provides a power supply. The utility model has the advantages that in the BIPV, the unpowered fan is arranged at the ridge built by the photovoltaic panel and the photovoltaic bracket to dissipate heat by utilizing the principle that hot air flow rises, so that the temperature below the photovoltaic panel is effectively reduced, the temperature of the photovoltaic panel is further reduced, the influence on the power generation efficiency of the photovoltaic panel due to over-high temperature is prevented, and the service life of the photovoltaic panel is prolonged. According to the utility model, the technical blank of heat dissipation of the photovoltaic panel in the BIPV photovoltaic building industry is filled, the temperature of the photovoltaic panel is effectively reduced, and the power generation efficiency of the photovoltaic panel is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of solar photovoltaic heat dissipation, and more specifically, to a photovoltaic heat dissipation system. Background Art

[0002] Building-integrated photovoltaics (BIPV) (PV for "photovoltaic") is a technology that integrates solar power generation (photovoltaic) products into buildings. BIPV differs from BAPV (Building Attached PV) systems that are attached to buildings. BIPV can be divided into two main categories: one is the integration of photovoltaic arrays with buildings, and the other is the integration of photovoltaic arrays with buildings. Examples include photovoltaic tile roofs, photovoltaic curtain walls, and photovoltaic skylights. Of these two approaches, integrating photovoltaic arrays with buildings is a common method, particularly with building roofs.

[0003] The most common BIPV currently available is to install solar power generation (photovoltaic) products on the top of a factory building or a building, or to directly replace the roof of a building. This not only saves the cost and raw materials of the building's top, but also provides photovoltaic power generation for factory use.

[0004] Photovoltaic power generation is generated under the scorching sun, but there are buildings under the photovoltaic panels, and the ventilation effect is poor. In summer, due to the scorching sun and ambient temperature, the surface temperature of the photovoltaic panels and the temperature under the photovoltaic panels can reach over 80°C, and the temperature of the photovoltaic panels themselves exceeds 50-60°C, which will negatively affect their power generation efficiency. Therefore, it is necessary to dissipate heat from the photovoltaic panels. However, the BIPV industry currently does not have corresponding BIPV photovoltaic panel heat dissipation products or devices. Therefore, it is necessary to conduct technical research and development to solve the above problems. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide a photovoltaic heat dissipation system to solve the problems in the prior art such as the excessively high temperature of the photovoltaic panels themselves and the reduced power generation efficiency.

[0006] To solve the above problems, the present invention adopts the following technical solution: a photovoltaic heat dissipation system, comprising a substrate and a fan installed on the wind holes of the substrate, wherein the shape and size of the substrate are adapted to the shape and size of a single photovoltaic panel.

[0007] Furthermore, a motor and fan blades are provided in the fan, and the electrical control system of the photovoltaic panel is electrically connected to the controller of the motor and provides power.

[0008] Furthermore, the controller of the motor is provided with a temperature control module, and the temperature sensor of the temperature control module is arranged below and close to the photovoltaic panel.

[0009] Furthermore, the shape and size of the substrate are consistent with the shape and size of a single photovoltaic panel, or the length or width of the substrate is twice or half of the length or width of a single photovoltaic panel.

[0010] Furthermore, the fan is connected to one or more air ducts, and the air ducts are located below and close to the photovoltaic panels.

[0011] Furthermore, the air guide pipe is provided with a plurality of air suction ports in sequence along the length direction.

[0012] Furthermore, the air suction ports are circular or square holes evenly distributed on the air duct.

[0013] Furthermore, a cooling fan coaxial with the air duct is provided in the air duct, and the cooling fan is electrically connected to the electrical control system of the photovoltaic panel.

[0014] Furthermore, the structure of the air duct is multi-branched.

[0015] Furthermore, the cover of the fan is a ventilation ball-type structure or a top hat-type structure.

[0016] The beneficial effects of the utility model are as follows:

[0017] (1) In BIPV, photovoltaic panels replace the roof. The principle of rising hot air flow can be used to install unpowered fans at the ridge of the roof formed by photovoltaic panels and photovoltaic brackets to dissipate heat, effectively reducing the temperature below the photovoltaic panels, and then reducing the temperature of the photovoltaic panels themselves, preventing excessive temperature from affecting the power generation efficiency of the photovoltaic panels.

[0018] (2) The electric fan is combined with a temperature controller, which is powered by the photovoltaic panels around the substrate installation location. It automatically monitors the temperature below the photovoltaic panels and starts the electric fan to quickly exhaust and dissipate heat.

[0019] (3) The air duct can expand the suction range of the fan, improve the extraction efficiency of hot air, and improve the heat dissipation efficiency and the heat dissipation coverage area of a single fan.

[0020] In summary, the utility model fills the technical gap in heat dissipation of photovoltaic panels in the BIPV photovoltaic building industry, effectively reduces the temperature of photovoltaic panels, and ensures their power generation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the relationship between the utility model and the installation position of the photovoltaic panel;

[0022] Figure 2This is a schematic diagram of the structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the air guide pipe of the utility model.

[0024] Description of the numbers in the figure:

[0025] 1. Purlin, 2. Photovoltaic bracket, 3. Photovoltaic panel, 4. Base plate, 5. Fan, 6. Air duct, 31. Electronic control, 51. Temperature controller, 52. Temperature sensor, 61. Branch of the air duct. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention;

[0027] Example 1:

[0028] like Figure 1 As shown, the photovoltaic power generation roof of the BIPV photovoltaic building consists of a purlin 1 installed on the roof, a photovoltaic bracket 2 installed on the purlin, and a photovoltaic panel 3 installed on the photovoltaic bracket 2.

[0029] A substrate 4 having the same shape and size as a single photovoltaic panel is selected (usually a photovoltaic panel is rectangular or square in shape, and the size of the substrate 4 can be selected so that two substrates are connected together to form the same size of a photovoltaic panel, or vice versa, two photovoltaic panels are connected together to form the same size of a substrate). The thickness of the substrate 4 is consistent with the thickness of the photovoltaic panel to facilitate the clamping installation of the photovoltaic bracket 2. The thickness of the other parts of the substrate 4 can be a single layer or double-sided plate to save materials and reduce weight.

[0030] A hole is opened on the substrate 4 and a fan 5 is installed on the hole. The fan 5 is equipped with a temperature controller 51 for controlling the start-up and speed of the fan. The temperature sensor 52 of the temperature controller 51 is connected to the photovoltaic panel 3 or directly installed on the back of the photovoltaic panel 3 using wires. A power supply is connected to the electronic control 31 of the photovoltaic panel 3 and electrically connected to the fan 5.

[0031] In order to further improve the heat dissipation coverage of the fan 5, one or more air ducts 6 are installed at the air inlet of the fan. The air ducts 6 are installed close to the back of the photovoltaic panel 3. The air ducts can be fixed to the photovoltaic bracket 2 using cable ties or metal fixings.

[0032] The design of the air duct 6 can include multiple air intakes along its length. This allows air to be drawn from multiple areas along the length of the air duct 6, thereby increasing the heat dissipation coverage area. Secondly, the air intakes can be designed as circular or square holes evenly distributed along the air duct 6. With this uniform arrangement of holes, the air around the holes can be drawn into the air duct due to the negative pressure of the fan, resulting in a more pronounced heat dissipation effect along the entire length of the air duct 6.

[0033] Based on the above design, the air duct 6 can be designed into a multi-branch type. The area covered by the branches 61 of each air duct is within the heat dissipation coverage area of the fan, greatly expanding the heat dissipation coverage area.

[0034] If the fan's exhaust efficiency reaches a bottleneck, or if the air duct is too long, resulting in poor air suction at the end, a coaxial cooling fan can be installed inside the duct. This cooling fan is electrically connected to the photovoltaic panel's electronic control system. This allows the cooling fan and the fan to work together, blowing the heat from the end of the duct toward the fan, where it is exhausted.

[0035] The fan housing is a ventilated spherical structure or a top hat structure. These two structures are common shapes of unpowered fans. They are not only simple in structure and low in cost, but also have good waterproof effect and meet the requirements of BIPV photovoltaic buildings. In this embodiment, the top hat structure is selected.

[0036] In summary, the beneficial effects of the present invention are as follows:

[0037] (1) In BIPV, photovoltaic panels replace the roof. The principle of rising hot air flow can be used to install unpowered fans at the ridge of the roof formed by photovoltaic panels and photovoltaic brackets to dissipate heat, effectively reducing the temperature below the photovoltaic panels, and then reducing the temperature of the photovoltaic panels themselves, preventing excessive temperature from affecting the power generation efficiency of the photovoltaic panels.

[0038] (2) The electric fan is combined with a temperature controller, which is powered by the photovoltaic panels around the substrate installation location. It automatically monitors the temperature below the photovoltaic panels and starts the electric fan to quickly exhaust and dissipate heat.

[0039] (3) The air duct can expand the suction range of the fan, improve the extraction efficiency of hot air, and improve the heat dissipation efficiency and the heat dissipation coverage area of a single fan.

[0040] The utility model fills the technical gap in heat dissipation of photovoltaic panels in the BIPV photovoltaic building industry, effectively reduces the temperature of the photovoltaic panels and ensures their power generation efficiency.

[0041] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed in the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A photovoltaic heat dissipation system, characterized in that: It includes a substrate and a fan installed on the wind hole of the substrate. The shape and size of the substrate are adapted to the shape and size of a single photovoltaic panel. The fan is provided with a motor and fan blades. The electrical control system of the photovoltaic panel is electrically connected to the controller of the motor and provides power. The controller of the motor is provided with a temperature control module. The temperature sensor of the temperature control module is arranged below and close to the photovoltaic panel. The fan is connected to one or more air ducts. The air ducts are located below and close to the photovoltaic panel. The air ducts are provided with multiple air suction ports in sequence in the length direction.

2. A photovoltaic heat dissipation system according to claim 1, characterized in that: The shape and size of the substrate are consistent with those of a single photovoltaic panel, or the length or width of the substrate is twice or half of the length or width of a single photovoltaic panel.

3. The photovoltaic heat dissipation system according to claim 1, characterized in that: The air suction ports are circular or square holes evenly distributed on the air guide pipe.

4. The photovoltaic heat dissipation system according to claim 1, wherein: A cooling fan coaxial with the air duct is provided in the air duct, and the cooling fan is electrically connected to the electric control system of the photovoltaic panel.

5. The photovoltaic heat dissipation system according to claim 1, characterized in that: The structure of the air guide pipe is multi-branch type.

6. The photovoltaic heat dissipation system according to claim 1, characterized in that: The cover of the fan is a ventilation ball-shaped structure or a top hat-shaped structure.

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