Photovoltaic power generation device installed on outer wall of building

Abstract

The utility model discloses a photovoltaic power generation device installed on a building outer wall, which comprises a support frame, a photovoltaic panel assembly, an angle adjusting mechanism and a ventilation and heat dissipation system, the support frame is fixed on the surface of the building outer wall, the photovoltaic panel assembly is connected with the support frame through the angle adjusting mechanism, and the angle adjusting mechanism comprises an electric push rod and a rotating shaft. The electric push rod is hinged between the support frame and the back of the photovoltaic panel assembly; the rotating shaft penetrates through the photovoltaic panel assembly and is rotationally connected with the top of the support frame; the ventilation and heat dissipation system is composed of heat dissipation fins arranged on the back face of the photovoltaic panel assembly and a convection pipeline in the supporting frame, and the convection pipeline is communicated with a ventilation system in a building through an air guide pipe. And the electromagnetic valve automatically starts forced ventilation and is matched with a ventilation gap between the supporting frame and the building outer wall, so that the temperature of the photovoltaic panel assembly is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic power generation device technology, specifically to a photovoltaic power generation device installed on the exterior wall of a building. Background Technology

[0002] With the growing global demand for clean energy, photovoltaic power generation on building facades is receiving increasing attention and application as an efficient way to utilize building space to obtain renewable energy. It not only effectively reduces building energy consumption but also aligns with the environmental protection concept of sustainable development.

[0003] However, traditional building exterior photovoltaic (PV) power generation systems have many drawbacks. Among them, heat dissipation is particularly problematic. In the high temperatures of summer, traditional systems suffer from poor heat dissipation, leading to excessively high temperatures in the PV modules, often exceeding 80°C. These excessively high temperatures significantly reduce the conversion efficiency of the PV modules, severely impacting power generation. Prolonged exposure to high temperatures also accelerates module aging, shortens their lifespan, and increases maintenance and replacement costs. Furthermore, traditional systems have shortcomings in coordinating ventilation and heat dissipation with the building's internal ventilation system, which urgently need improvement. Utility Model Content

[0004] (I) Technical Issues

[0005] This utility model provides a photovoltaic power generation device installed on the exterior wall of a building, which solves the problems of poor heat dissipation and poor coordination with the building's internal ventilation system in traditional devices.

[0006] (II) Technical Content

[0007] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: a photovoltaic power generation device installed on the exterior wall of a building, comprising a support frame, a photovoltaic panel assembly, an angle adjustment mechanism, and a ventilation and heat dissipation system. The support frame is fixed to the surface of the exterior wall of the building. The photovoltaic panel assembly is connected to the support frame through the angle adjustment mechanism, which includes an electric push rod and a rotating shaft. The electric push rod is hinged between the support frame and the back of the photovoltaic panel assembly, and the rotating shaft passes through the top of the photovoltaic panel assembly and forms a rotatable connection with the top of the support frame. The ventilation and heat dissipation system consists of heat dissipation fins disposed on the back of the photovoltaic panel assembly and convection pipes inside the support frame. The convection pipes are connected to the building's internal ventilation system through air ducts.

[0008] Furthermore, it also includes a water collection and diversion mechanism, which includes a water guide channel located at the lower edge of the photovoltaic panel assembly and a water collection channel hidden within the support frame. The water guide channel is connected to the water collection channel via a drainage hose.

[0009] Furthermore, an electromagnetic valve is installed inside the air duct, which automatically activates forced ventilation when the temperature on the back of the photovoltaic panel module is ≥60℃.

[0010] Furthermore, a 5-10cm ventilation gap is provided between the supporting frame and the building's exterior wall, and a fireproof and heat-insulating layer is laid on the surface of the building wall within the ventilation gap.

[0011] Furthermore, it also includes a PLC controller and a temperature sensor fixed on the back of the photovoltaic panel module. The temperature sensor and the solenoid valve are electrically connected to the PLC controller.

[0012] (III) Technical Effects

[0013] The advantages of this utility model compared with the prior art are as follows:

[0014] 1. High-efficiency heat dissipation: Through the design of heat dissipation fins, convection pipes and the building's internal ventilation system, when the temperature on the back of the photovoltaic panel module is ≥60℃, the solenoid valve automatically opens to force ventilation. Combined with the ventilation gap between the support frame and the building's exterior wall, the temperature of the photovoltaic panel module is effectively reduced, avoiding the reduction in power generation efficiency and module aging caused by high temperature. Experiments show that the module temperature can be reduced by 20-30℃ and the power generation efficiency can be increased by 15%-20%.

[0015] 2. Flexible angle adjustment: The angle adjustment mechanism, consisting of an electric push rod and a rotating shaft, can adjust the angle of the photovoltaic panel according to the angle of sunlight in different seasons, so that the photovoltaic panel always maintains the best light-receiving state. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of a photovoltaic power generation device installed on the exterior wall of a building, according to this utility model. Figure 1 .

[0017] Figure 2 This is a three-dimensional schematic diagram of a photovoltaic power generation device installed on the exterior wall of a building, according to this utility model. Figure 2 .

[0018] Figure 3 This is a three-dimensional schematic diagram of a photovoltaic power generation device installed on the exterior wall of a building, according to this utility model. Figure 3 .

[0019] Figure 4 This is a front view schematic diagram of a photovoltaic power generation device installed on the exterior wall of a building according to this utility model.

[0020] Figure 5 This is a bottom view schematic diagram of a photovoltaic power generation device installed on the exterior wall of a building, according to this utility model.

[0021] As shown in the figure: 1. Support frame; 2. Photovoltaic panel assembly; 3. Electric actuator; 4. Rotating shaft; 5. Heat dissipation fins; 6. Convection pipe; 7. Air duct; 8. Water channel; 9. Water collection tank; 10. Drainage hose; 11. Solenoid valve; 12. Ventilation gap; 13. Fireproof insulation layer; 14. PLC controller; 15. Temperature sensor; 16. Building exterior wall. Detailed Implementation

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "center", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation structure and operation. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "provided with," "installed," "connected," "linked," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] The present invention will now be described in further detail with reference to the accompanying drawings.

[0025] Combined with appendix Figure 1 To be continued Figure 5 A photovoltaic power generation device installed on the exterior wall of a building includes a support frame 1, a photovoltaic panel assembly 2, an angle adjustment mechanism, and a ventilation and heat dissipation system. The support frame 1 is fixed to the surface of the building exterior wall. The photovoltaic panel assembly 2 is connected to the support frame 1 through the angle adjustment mechanism, which includes an electric push rod 3 and a rotating shaft 4. The electric push rod 3 is hinged between the support frame 1 and the back of the photovoltaic panel assembly 2, and the rotating shaft 4 passes through the top of the photovoltaic panel assembly 2 and forms a rotatable connection with the top of the support frame 1. The ventilation and heat dissipation system consists of heat dissipation fins 5 disposed on the back of the photovoltaic panel assembly 2 and convection pipes 6 inside the support frame 1. The convection pipes 6 are connected to the building's internal ventilation system through air ducts 7.

[0026] A photovoltaic power generation device installed on the exterior wall of a building also includes a water collection and diversion mechanism. The water collection and diversion mechanism includes a water guide channel 8 located at the lower edge of the photovoltaic panel assembly 2 and a water collection channel 9 hidden in the support frame 1. The water guide channel 8 is connected to the water collection channel 9 through a drainage hose 10, and the water collection channel 9 is connected to the building drainage system.

[0027] An electromagnetic valve 11 is installed inside the air duct 7, which automatically activates forced ventilation when the temperature on the back of the photovoltaic panel 2 is ≥60℃. It also includes a PLC controller 14 and a temperature sensor 15 fixedly installed on the back of the photovoltaic panel 2. The temperature sensor 15 and the electromagnetic valve 11 are electrically connected to the PLC controller 14. A 5-10cm ventilation gap 12 is provided between the support frame 1 and the building's exterior wall, and a fireproof and heat-insulating layer 13 is laid on the surface of the building wall within the ventilation gap.

[0028] The working principle of this invention is as follows: This device uses an angle adjustment mechanism to adjust the angle of the photovoltaic panel module 2, enabling it to better receive sunlight for photovoltaic power generation. The ventilation and heat dissipation system works in concert through the heat dissipation fins 5, convection pipes 6, air ducts 7, and ventilation gaps 12 to dissipate heat and maintain the normal operating temperature of the photovoltaic panel module 2. The water collection and diversion mechanism collects and diverts rainwater through water guide channels 8, drainage hoses 10, and water collection tanks 9. The temperature sensor 15 monitors the temperature on the back of the photovoltaic panel module 2 in real time and transmits the signal to the PLC controller 14, which then controls the solenoid valve 11 to open or close, achieving intelligent ventilation and heat dissipation.

[0029] The working process of this utility model is as follows:

[0030] 1. Tilt Angle Adjustment: The electric actuator 3 is activated according to changes in the angle of sunlight (seasonal variations). As the electric actuator 3 extends and retracts, it pushes the photovoltaic panel module 2 to rotate around the rotation axis 4, thereby adjusting the tilt angle of the photovoltaic panel module 2 to ensure that it receives sunlight to the maximum extent for efficient photovoltaic power generation.

[0031] 2. Normal ventilation and heat dissipation: During the photovoltaic power generation process, the photovoltaic panel module 2 generates heat, which is transferred to the heat dissipation fins 5 on the back. The 5-10cm ventilation gap 12 between the supporting frame 1 and the building's exterior wall forms a natural ventilation channel, allowing external cold air to enter the ventilation gap 12 and exchange heat with the heat dissipation fins 5.

[0032] 3. Forced Ventilation and Heat Dissipation: A temperature sensor 15 fixed to the back of the photovoltaic panel 2 monitors the temperature in real time and transmits the temperature signal to the PLC controller 14. When the temperature on the back of the photovoltaic panel 2 is ≥60℃, the PLC controller 14 issues a command to open the solenoid valve 11 in the air duct 7. At this time, the building's internal ventilation system is connected to the convection pipe 6 through the air duct 7, and cool air is delivered to the gaps in the heat dissipation fins 5 through the convection pipe 6, accelerating airflow and achieving forced ventilation and heat dissipation, thus rapidly reducing the temperature of the photovoltaic panel 2.

[0033] 4. Rainwater Collection and Diversion: During rainy days, rainwater falling on the photovoltaic panel module 2 flows down the panel surface and is collected by the water guide channel 8 located at the lower edge of the photovoltaic panel module 2. The rainwater in the water guide channel 8 flows through the drainage hose 10 into the water collection tank 9 hidden in the support frame 1. The water collection tank 9 then guides the collected rainwater into the building drainage system, realizing the collection and diversion of rainwater.

[0034] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A photovoltaic power generation device installed on the exterior wall of a building, comprising a support frame (1), a photovoltaic panel assembly (2), an angle adjustment mechanism, and a ventilation and heat dissipation system, characterized in that: The support frame (1) is fixed to the exterior wall surface of the building. The photovoltaic panel assembly (2) is connected to the support frame (1) through an angle adjustment mechanism. The angle adjustment mechanism includes an electric push rod (3) and a rotating shaft (4). The electric push rod (3) is hinged between the support frame (1) and the back of the photovoltaic panel assembly (2). The rotating shaft (4) passes through the top of the photovoltaic panel assembly (2) and the support frame (1) to form a rotational connection. The ventilation and heat dissipation system consists of heat dissipation fins (5) located on the back of the photovoltaic panel (2) and convection pipes (6) inside the support frame (1). The convection pipes (6) are connected to the building's internal ventilation system through air ducts (7).

2. A photovoltaic power generation device installed on the exterior wall of a building according to claim 1, characterized in that: It also includes a water collection and diversion mechanism, which includes a water guide channel (8) located at the lower edge of the photovoltaic panel assembly (2) and a water collection channel (9) hidden in the support frame (1). The water guide channel (8) is connected to the water collection channel (9) through a drainage hose (10).

3. A photovoltaic power generation device installed on the exterior wall of a building according to claim 1, characterized in that: The air duct (7) is equipped with a solenoid valve (11), which automatically opens the forced ventilation when the temperature on the back of the photovoltaic panel (2) is ≥60℃.

4. A photovoltaic power generation device installed on the exterior wall of a building according to claim 1, characterized in that: A 5-10cm ventilation gap (12) is provided between the supporting frame (1) and the building exterior wall, and a fireproof and heat-insulating layer (13) is laid on the surface of the building wall within the ventilation gap.

5. A photovoltaic power generation device installed on the exterior wall of a building according to claim 3, characterized in that: It also includes a PLC controller (14) and a temperature sensor (15) fixed on the back of the photovoltaic panel assembly (2). The temperature sensor (15) and the solenoid valve (11) are electrically connected to the PLC controller (14).

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