Facade sunshading photovoltaic device and use method thereof

Abstract

The invention discloses a facade sunshading photovoltaic device and a using method thereof, and relates to the technical field of energy-saving buildings. The problem that an existing photovoltaic assembly installed on the outer vertical face of a building is low in power generation output power is solved. The device comprises a sunshade frame, a photovoltaic panel, a perforated aluminum veneer, an exhaust fan, a temperature sensor and a control system, a side bracket of the sunshade frame is fixed on a beam or a column of a building main body structure, the photovoltaic panel is fixed on a top bracket of the sunshade frame, the perforated aluminum veneer is fixed on a bottom bracket of the sunshade frame, and the exhaust fan is fixed on the top bracket of the sunshade frame. The exhaust fan and the temperature sensor are arranged in an inner cavity of the sunshade frame and are in signal connection with the control system. The method comprises the following steps: connecting the side bracket of the sunshade frame to a beam or a column of a building main body structure, and controlling the driving motor to push the top bracket to vertically move along the sliding track according to monitoring data of the illumination sensor so as to adjust the inclination angle of the photovoltaic panel; and when the monitored temperature of the temperature sensor is higher than a limit value, the control system controls the exhaust fan to ventilate for cooling.

Description

Technical Field

[0001] The present invention relates to the technical field of energy-saving buildings, and particularly relates to a facade sunshading photovoltaic device and a using method thereof. Background Art

[0002] With the joint promotion of policy support, market demand and technological innovation, building photovoltaics will become an important force in achieving energy transformation and the dual-carbon goal. Photovoltaic modules are mainly installed on the exterior facades of buildings, including roofs and four facades. When photovoltaic modules are installed on the building exterior facade, due to the low solar radiation intensity on the building exterior facade, the power generation efficiency is low. At the same time, due to the thermal effect of photovoltaic power generation, when the ambient temperature is 25 °C, the temperature of the photovoltaic module generally reaches 50-60 °C. If the photovoltaic module is not considered carefully or installed unreasonably, affected by the increase in the temperature of the photovoltaic module, the photovoltaic power generation output power will drop by 15% - 18%, or even more. Summary of the Invention

[0003] Aiming at the problem of low power generation output of existing photovoltaic modules installed on the building exterior facade. The purpose of the present invention is to provide a facade sunshading photovoltaic device and a using method thereof.

[0004] The technical solution adopted by the present invention to solve its technical problems is: A facade sunshading photovoltaic device includes a sunshading frame, a photovoltaic panel, a perforated aluminum single plate, an exhaust fan, a temperature sensor and a control system. The sunshading frame is a frame with a triangular cross-section welded by side brackets, top brackets and bottom brackets. The side brackets of the sunshading frame are fixed on the beams or columns of the building main structure. The photovoltaic panel is fixed on the top bracket of the sunshading frame. The perforated aluminum single plate is fixed on the bottom bracket of the sunshading frame. The exhaust fan and the temperature sensor are arranged in the inner cavity of the sunshading frame and are located below the photovoltaic panel, and the temperature sensor and the exhaust fan are respectively connected to the control system in signal.

[0005] The facade sunshading photovoltaic device of the present invention includes a sunshading frame fixed on the beams or columns of the building main structure, a photovoltaic panel fixed on the top bracket of the sunshading frame, a perforated aluminum single plate fixed on the bottom bracket of the sunshading frame, a temperature sensor and an exhaust fan arranged in the inner cavity of the sunshading frame; the photovoltaic panel is installed on the top bracket of the triangular sunshading frame, which can receive solar radiation maximally, improving the power generation efficiency of the photovoltaic system. The photovoltaic panel can not only provide external sunshading for the glass curtain wall, but also reduce the radiation heat of the glass curtain wall; the perforated aluminum single plate located on the bottom bracket of the sunshading frame can protect the electrical equipment facilities under the photovoltaic panel, and at the same time has the ability of ventilation and heat dissipation, reducing the adverse impact of photovoltaic thermal effect on the photovoltaic system; the temperature sensor monitors the temperature data in real time and transmits it to the control system. When the temperature reaches the limit value, the control system controls the exhaust fan to start forced ventilation to promote the air circulation between indoor and outdoor to achieve the purpose of cooling, ensuring the best power generation efficiency of the photovoltaic panel.

[0006] Furthermore, it further includes a light sensor which is installed at the edge of the top bracket of the sunshade frame and is signal-connected to the control system.

[0007] Furthermore, the sunshade frame further includes at least a pair of vertically arranged sliding tracks and a driving motor. The sliding tracks and the driving motor are connected to the side brackets. The bottom bracket of the sunshade frame is hingedly connected to the bottom of the side brackets. One end of the top bracket is hingedly connected to the bottom bracket, and the other end is provided with a slider which is embedded in the sliding track and can move vertically along the sliding track.

[0008] Furthermore, it further includes embedded parts connected to the beams or columns of the building main structure. The side brackets of the sunshade frame are welded to the embedded parts. Heat-insulating cotton is lined behind the embedded parts. The wall-piercing protruding part of the embedded parts near the indoor side is covered with a heat-insulating blanket, and the outer end of the heat-insulating blanket is sealed with an end cap.

[0009] Furthermore, a plurality of exhaust fans are arranged at intervals in the inner cavity of the sunshade frame, and the installation directions of two adjacent exhaust fans are opposite. The exhaust fans are fixed to the side brackets of the sunshade frame.

[0010] Furthermore, it further includes an aluminum alloy sub-frame which is fixed to the top of the top bracket of the sunshade frame, and the photovoltaic panel is detachably connected to the aluminum alloy sub-frame.

[0011] In addition, the present invention also provides a method for using the facade sunshade photovoltaic device, and the steps are as follows:

[0012] Assemble the facade sunshade photovoltaic device, connect the side brackets of the sunshade frame to the beams or columns of the building main structure, and the temperature sensor, the light sensor, the exhaust fans and the driving motor are respectively signal-connected to the control system;

[0013] The control system controls the driving motor to push the top bracket to move vertically along the sliding track according to the monitoring data of the light sensor, and automatically adjusts the inclination angle of the photovoltaic panel;

[0014] When the monitored temperature of the temperature sensor is higher than the limit value, the control system controls the exhaust fans to ventilate for cooling. When the monitored temperature of the temperature sensor meets the working requirements of the photovoltaic power generation device, the control system controls the exhaust fans to close.

[0015] For the method for using the facade sunshade photovoltaic device of the present invention, first, the control system controls the driving motor to push the top bracket to move vertically along the sliding track according to the monitoring data of the light sensor, and automatically adjusts the photovoltaic panel to the best inclination angle, improving the power generation efficiency of the building facade photovoltaic power generation system; the temperature sensor monitors the temperature data in real time and transmits it to the control system. When the temperature reaches the limit value, the control system controls the exhaust fans to start forced ventilation to promote the air circulation between the indoor and outdoor to achieve the purpose of cooling, and ensure the best power generation efficiency of the photovoltaic panel. Brief Description of the Drawings

[0016] Figure 1 It is a schematic diagram of an embodiment of the facade sunshade photovoltaic device of the present invention;

[0017] Figure 2 is Figure 1 A-A cross-sectional view of.

[0018] The reference numerals in the figure are as follows:

[0019] Glass curtain wall 1; Thermal insulation cotton 2; Embedded parts 3; Heat insulation blanket 4; End cover 5; Sunshade frame 10; Sliding track 11; Top bracket 12; Bottom bracket 14; Slide block 15; Aluminum alloy secondary frame 16; Photovoltaic panel 17; Perforated aluminum single board 18; Light sensor 21; Temperature sensor 24; Exhaust fan 25. Detailed Description of the Invention

[0020] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments. It should be noted that the drawings are all in a very simplified form and use non-precise scales, only for the purpose of facilitating and clearly assisting in explaining the purpose of the embodiments of the present invention. For the convenience of narration, the "upper" and "lower" described below are in the same direction as the upper and lower of the drawings, but this cannot be a limitation to the technical solution of the present invention.

[0021] Combined with Figure 1 and Figure 2 Describe the facade sunshade photovoltaic device of the present invention. It includes: a sunshade frame 10, a photovoltaic panel 17, a perforated aluminum single board 18, an exhaust fan 25, a temperature sensor 24 and a control system. The sunshade frame 10 is a frame with a triangular cross-section welded by side brackets, a top bracket 12 and a bottom bracket 14. The side brackets of the sunshade frame 10 are fixed to the beams or columns of the building main structure. The photovoltaic panel 17 is fixed to the top bracket 12 of the sunshade frame 10. The perforated aluminum single board 18 is fixed to the bottom bracket 14 of the sunshade frame 10. The exhaust fan 25 and the temperature sensor 24 are arranged in the inner cavity of the sunshade frame 10 and are located below the photovoltaic panel 17. The temperature sensor 24 and the exhaust fan 25 are respectively connected to the control system in signal. The sunshade frame 10 is a frame structure welded by square tubes.

[0022] The facade sunshading photovoltaic device of the present invention includes a sunshading frame 10 fixed on a beam or column of the building main structure, a photovoltaic panel 17 fixed on the top bracket 12 of the sunshading frame 10, a perforated aluminum single plate 18 fixed on the bottom bracket 14 of the sunshading frame 10, a temperature sensor 24 and an exhaust fan 25 arranged in the inner cavity of the sunshading frame 10; the photovoltaic panel 17 is installed on the top bracket 12 of the triangular sunshading frame 10, which can receive solar radiation maximally, improving the power generation efficiency of the photovoltaic system. The photovoltaic panel 17 can not only provide external sunshading for the glass curtain wall 1, but also reduce the radiant heat of the glass curtain wall 1; the perforated aluminum single plate 18 located at the bottom bracket 14 of the sunshading frame 10 can protect the electrical equipment facilities under the photovoltaic panel 17, and at the same time has the ability of ventilation and heat dissipation, reducing the adverse impact of photovoltaic thermal effect on the photovoltaic system; the temperature sensor 24 monitors the temperature data in real time and transmits it to the control system. When the temperature reaches the limit value, the control system controls the exhaust fan 25 to start forced ventilation, promoting the air circulation between indoor and outdoor to achieve the purpose of cooling, and ensuring the best power generation efficiency of the photovoltaic panel 17.

[0023] As Figure 1 shown, the facade sunshading photovoltaic device further includes a light sensor 21. The light sensor 21 is installed at the edge of the top bracket 12 of the sunshading frame 10 and is signal-connected to the control system. The light sensor 21 is used to capture the real-time position of the sun and transmit the monitoring data to the control system.

[0024] As Figure 1 shown, the sunshading frame 10 further includes at least a pair of vertically arranged sliding tracks 11 and a driving motor. The sliding tracks 11 and the driving motor are connected to the side brackets. The bottom bracket 14 of the sunshading frame 10 is hinged to the bottom of the side brackets. One end of the top bracket 12 is hinged to the bottom bracket 14, and the other end is provided with a slider 15, and the slider 15 is embedded in the sliding track 11 and can move vertically along the sliding track 11. The control system controls the driving motor to push the top bracket 12 to move vertically along the sliding track 11 according to the monitoring data of the light sensor 21, driving the photovoltaic panel 17 to rotate and automatically adjust to the best tilt angle, improving the power generation efficiency of the building facade photovoltaic system.

[0025] As Figure 1 shown, the facade sunshading photovoltaic device further includes an embedded part 3 connected to a beam or column of the building main structure. The side brackets of the sunshading frame 10 are welded to the embedded part 3. The embedded part 3 is used to bear the weight of all relevant outdoor equipment facilities. In order to strengthen the heat preservation performance of the building, the embedded part 3 is lined with heat insulation cotton 2, and the wall-piercing protruding part of the embedded part 3 near the indoor side is covered with a heat insulation blanket 4, and the outer end of the heat insulation blanket 4 is sealed with an end cover 5 to improve the heat preservation effect. The end cover 5 is made of aluminum plate.

[0026] As Figure 1 and Figure 2 shown,Figure 2 The "outer" and "inner" in this context refer to the outside and inside of the sunshade frame 10. A plurality of exhaust fans 25 are arranged at intervals in the inner cavity of the sunshade frame 10, and the installation directions of two adjacent exhaust fans 25 are opposite. The exhaust fans 25 are fixed to the side brackets of the sunshade frame 10. When the temperature sensor 24 monitors that the temperature is higher than 35°C, the control system controls the exhaust fans 25 to start. The exhaust fans 25 perform stepless speed regulation for forced ventilation. The installation directions of two adjacent exhaust fans 25 are opposite, sucking in cold air from the outside and discharging hot air from the inside, forming an air circulation between the inside and the outside, and ensuring the best power generation efficiency of the photovoltaic panel 17.

[0027] As Figure 1 shown, the facade sunshade photovoltaic device of the present invention further includes an aluminum alloy auxiliary frame 16. The aluminum alloy auxiliary frame 16 is fixed to the top of the top bracket 12 of the sunshade frame 10, and the photovoltaic panel 17 is detachably connected to the aluminum alloy auxiliary frame 16. The aluminum alloy auxiliary frame 16 can stably fix the photovoltaic panel 17 to the sunshade frame 10.

[0028] Combined with Figure 1 and Figure 2 describe the usage method of the facade sunshade photovoltaic device of the present invention. The specific steps are as follows:

[0029] Assemble the facade sunshade photovoltaic device, connect the side brackets of the sunshade frame 10 to the beams or columns of the building main structure, and the temperature sensor 24, light sensor 21, exhaust fans 25 and drive motor are respectively signal-connected to the control system;

[0030] The control system controls the drive motor to push the top bracket 12 to move vertically along the sliding track 11 according to the monitoring data of the light sensor 21, and automatically adjusts the photovoltaic panel 17 to the best tilt angle;

[0031] When the monitored temperature of the temperature sensor 24 is higher than the limit value, the control system controls the exhaust fans 25 to start. The exhaust fans 25 perform stepless speed regulation for forced ventilation to form an air circulation between the inside and the outside for cooling. When the monitored temperature of the temperature sensor 24 meets the working requirements of the photovoltaic power generation device, the control system controls the exhaust fans 25 to close. In this embodiment, the limit value is 35°C.

[0032] For the usage method of the facade sunshade photovoltaic device of the present invention, first, the control system controls the drive motor to push the top bracket 12 to move vertically along the sliding track 11 according to the monitoring data of the light sensor 21, and automatically adjusts the photovoltaic panel 17 to the best tilt angle, improving the power generation efficiency of the building facade photovoltaic power generation system; the temperature sensor 24 real-time monitors the temperature data and transmits it to the control system. When the temperature reaches the limit value, the control system controls the exhaust fans 25 to start forced ventilation, promoting the air circulation between the inside and the outside to achieve the purpose of cooling, and ensuring the best power generation efficiency of the photovoltaic panel 17.

[0033] The above description is only a description of the preferred embodiments of the present invention, and does not limit the scope of the present invention in any way. Any changes and modifications made by those of ordinary skill in the art of the present invention based on the above disclosure shall fall within the scope of the claims.

Claims

1. A facade sunlight-shading photovoltaic device, characterized in that, It includes: A sunshade frame, a photovoltaic panel, a perforated aluminum single plate, an exhaust fan, a temperature sensor and a control system. The sunshade frame is a frame with a triangular cross-section welded by side brackets, top brackets and bottom brackets. The side brackets of the sunshade frame are fixed to the beams or columns of the building main structure. The photovoltaic panel is fixed to the top brackets of the sunshade frame. The perforated aluminum single plate is fixed to the bottom brackets of the sunshade frame. The exhaust fan and the temperature sensor are arranged in the inner cavity of the sunshade frame and are located below the photovoltaic panel, and the temperature sensor and the exhaust fan are respectively connected to the control system by signals.

2. The facade sunlight-shading photovoltaic device according to claim 1, wherein: It further includes a light sensor which is installed at the edge of the top bracket of the sunshade frame and is connected to the control system by signals.

3. The facade sunshade photovoltaic device according to claim 2, wherein: The sunshade frame further includes at least a pair of vertically arranged sliding tracks and a driving motor. The sliding tracks and the driving motor are connected to the side brackets. The bottom bracket of the sunshade frame is hinged to the bottom of the side brackets. One end of the top bracket is hinged to the bottom bracket, and the other end is provided with a slider which is embedded in the sliding track and can move vertically along the sliding track.

4. The facade sunshade photovoltaic device according to claim 1, characterized in that: It further includes embedded parts connected to the beams or columns of the building main structure. The side brackets of the sunshade frame are welded to the embedded parts. Heat insulation cotton is lined behind the embedded parts. The wall-piercing protruding part of the embedded parts close to the indoor side is covered with a heat insulation blanket, and the outer end of the heat insulation blanket is sealed with an end cover.

5. The facade sunshade photovoltaic device according to claim 1, characterized in that: A plurality of exhaust fans are arranged at intervals in the inner cavity of the sunshade frame, and the installation directions of two adjacent exhaust fans are opposite. The exhaust fans are fixed to the side brackets of the sunshade frame.

6. The facade sunshade photovoltaic device according to claim 1, wherein: It further includes an aluminum alloy auxiliary frame which is fixed to the top of the top bracket of the sunshade frame. The photovoltaic panel is detachably connected to the aluminum alloy auxiliary frame.

7. The method of using the facade sunshade photovoltaic device according to claim 3, characterized in that, The steps are as follows: Assemble the facade sunshade photovoltaic device, connect the side brackets of the sunshade frame to the beams or columns of the building main structure, and connect the temperature sensor, the light sensor, the exhaust fan and the driving motor to the control system by signals respectively; The control system controls the driving motor to push the top bracket to move vertically along the sliding track according to the monitoring data of the light sensor, and automatically adjusts the tilt angle of the photovoltaic panel; When the monitored temperature of the temperature sensor is higher than the limit value, the control system controls the exhaust fan to ventilate for cooling. When the monitored temperature of the temperature sensor meets the working requirements of the photovoltaic power generation device, the control system controls the exhaust fan to close.

Images