CN221646106U - Photovoltaic curtain wall - Google Patents

Abstract

The present application discloses a photovoltaic curtain wall, which includes a plurality of photovoltaic panels, a plurality of frames for mounting the photovoltaic panels, and a heat dissipation assembly, wherein the plurality of photovoltaic panels are mounted one-to-one with the plurality of frames, the peripheral walls of the photovoltaic panels are fixed to the inner side walls of the frames, the plurality of frames are mounted on the exterior walls of buildings to form curtain walls, the frames are provided with air inlets and air outlets, and the heat dissipation assembly is arranged in the frames to form heat dissipation airflow. The present application has the effect of improving the overall photoelectric conversion efficiency of the photovoltaic curtain wall.

Description

Photovoltaic curtain wall

Technical Field

The present application relates to the photovoltaic field, and in particular to a photovoltaic curtain wall.

Background Art

Photovoltaic power generation, also known as solar power generation, is a technology that uses the photovoltaic effect of semiconductor interfaces to directly convert light energy into electrical energy. One of the key components of this technology is the photovoltaic panel that receives light energy.

At present, in order to increase the popularity of photovoltaic power generation, photovoltaic curtain walls are often installed on the exterior walls of buildings to receive and utilize light energy.

The existing photovoltaic curtain wall generates heat when the photovoltaic components are working, which makes the overall temperature of the device higher. When the photovoltaic panels work in a high temperature environment, their working efficiency will be reduced, affecting the overall photoelectric conversion efficiency of the photovoltaic curtain wall. Therefore, improvement is needed.

Utility Model Content

In order to improve the overall photoelectric conversion efficiency of a photovoltaic curtain wall, the present application provides a photovoltaic curtain wall.

The photovoltaic curtain wall provided in this application adopts the following technical solution:

A photovoltaic curtain wall comprises a plurality of photovoltaic panels, a plurality of frames for mounting the photovoltaic panels and a heat dissipation assembly, wherein the photovoltaic panels are mounted in a one-to-one correspondence with the frames, the peripheral walls of the photovoltaic panels are fixed to the inner side walls of the frames, the frames are mounted on the exterior walls of buildings to form a curtain wall, the frames are provided with air inlets and air outlets, and the heat dissipation assembly is arranged in the frames to form a heat dissipation airflow.

By adopting the above technical solution, when the photovoltaic panel generates heat or the temperature inside the frame is high due to sunlight, the heat dissipation component is started, and the heat inside the frame is discharged from the air outlet through the heat dissipation airflow, that is, air cooling, thereby increasing the heat dissipation rate inside the frame. When several frames form a curtain wall, the overall heat dissipation efficiency of the photovoltaic curtain wall is improved, thereby reducing the photoelectric conversion efficiency of the photovoltaic panel due to the high temperature and improving the overall photoelectric conversion efficiency of the photovoltaic panel.

Preferably, the frame is also equipped with a protective plate, the protective cover is a transparent glass plate, and the protective plate and the photovoltaic panel are sequentially installed on the frame from outside to inside, that is, the protective plate is located on the side of the photovoltaic panel away from the outer wall of the building.

By adopting the above technical solution, the protective plate makes the photovoltaic panel less likely to be damaged, thereby extending the service life of the photovoltaic panel.

Preferably, a plurality of rain shields are installed on the outer side of the frame, some of the rain shields are installed at the air inlet, and other parts of the rain shields are installed at the air outlet.

By adopting the above technical solution, the rain shield makes it difficult for rainwater to enter the frame from the air inlet or outlet, thereby protecting the internal structure of the frame from being damaged by rainwater.

Preferably, the plurality of air inlets are opened on the same side of the frame, and the plurality of air outlets are opened on an opposite side of the frame, and the heat dissipation assembly is used to form an airflow from the air inlet side toward the air outlet side.

By adopting the above technical solution, the air inlet and the air outlet are arranged on opposite sides of the frame, so that the heat dissipation airflow inside the frame is not prone to turbulence, thereby improving the heat dissipation efficiency.

Preferably, a stiffening rod is connected between the inner wall of the frame and the photovoltaic panel, and two ends of the stiffening rod are respectively connected to the frame and the photovoltaic panel.

By adopting the above technical solution, the connection between the photovoltaic panel and the frame is strengthened, and the installation strength of the photovoltaic panel is improved.

Preferably, the heat dissipation assembly includes a plurality of heat dissipation fans, which are all installed on the frame, and the plurality of heat dissipation fans are oriented in the same direction, and the heat dissipation fans are used to form an airflow from the air inlet to the air outlet.

By adopting the above technical solution, the heat dissipation fan forms a heat dissipation airflow in a uniform direction, thereby improving the heat dissipation efficiency.

Preferably, the cooling fans are all coupled to a temperature detection circuit, and the temperature detection circuit includes a temperature sensor, a temperature comparison unit and a switch unit;

The temperature sensor is built between the frame and the photovoltaic panel, and is used to detect the temperature inside the frame and send a temperature detection signal;

The temperature comparison unit is coupled to the temperature sensor and is provided with a threshold signal VREF, so as to issue a temperature comparison signal when the temperature detection signal is greater than the threshold signal VREF; and not issue a temperature comparison signal when the temperature detection signal is less than the threshold signal VREF;

The switch unit is coupled to the temperature comparison unit and is connected in series in the power supply circuit of the cooling fan, so as to turn on the power supply circuit of the cooling fan when a temperature comparison signal is received, and the cooling fan is started when a start signal is received, and to disconnect the power supply circuit of the cooling fan when no temperature comparison signal is received, and the cooling fan is automatically turned off when no temperature comparison signal is received.

By adopting the above technical solution, the temperature sensor detects the temperature in the frame in real time. When the temperature is higher than the value set by the temperature sensor, the temperature detection signal is greater than the threshold signal VREF, the temperature comparison unit sends a start signal to the switch unit, and the cooling fan starts. When the detected temperature is lower than the set value of the temperature sensor, the temperature detection signal is less than the threshold signal VREF, the temperature comparison unit does not send a temperature comparison signal, and the cooling fan does not start; thereby realizing the automatic opening and closing of the cooling fan. When the temperature is high, it starts to dissipate heat, reduces the temperature in the frame, and improves the working efficiency of the photovoltaic panel. When the temperature is low, it automatically shuts down to save electricity and improve the energy saving and environmental protection of the photovoltaic curtain wall.

Preferably, the temperature comparison unit comprises a comparator N1, a first signal input terminal of the comparator N1 is coupled to a temperature sensor, a second signal input terminal of the comparator N1 is connected to a threshold signal VREF, and a signal output terminal of the comparator N1 is coupled to a switch unit.

By adopting the above technical solution, the comparator N1 compares the temperature detection signal connected to the first signal input terminal with the threshold signal VREF of the second signal input terminal in real time and outputs a temperature comparison signal, compares the signals in time and then controls the switch unit to output the switch signal in the first time, and realizes the temperature comparison function through the comparator N1.

Preferably, the switch unit comprises a transistor Q1 , a base of the transistor Q1 is coupled to a signal output terminal of the comparator N1 , an emitter of the transistor Q1 is coupled to a power supply voltage VCC, and a collector of the transistor Q1 is grounded.

By adopting the above technical solution, when the base of the transistor Q1 receives the temperature comparison signal, the base of the transistor Q1 is converted from a low level to a high level, the transistor Q1 is turned on and sends a switch signal to control the cooling fan to turn on; when the base of the transistor Q1 does not receive the temperature comparison signal, the base of the transistor Q1 maintains a low level, the transistor Q1 is not turned on, so that the cooling fan remains turned off, thereby realizing the function of the switch unit sending a switch signal.

Preferably, the switch unit further includes a relay KM1, a coil of the relay KM1 is connected in series with the collector of the transistor Q1 and then grounded, and the relay KM1 includes a normally open contact switch KM1-1, and the normally open contact switch KM1-1 is connected in series in the power supply circuit of the cooling fan.

By adopting the above technical solution, when the transistor Q1 is turned on, the coil of the relay KM1 is energized, the normally open contact switch KM1-1 is closed, and the power supply circuit of the cooling fan is turned on; when the transistor Q1 is turned off, the coil of the relay KM1 is de-energized, the normally open contact switch KM1-1 is turned off again, and the power supply circuit of the cooling fan is disconnected, thereby realizing the function of controlling the power on and off of the cooling fan.

In summary, the present application includes at least one of the following beneficial technical effects:

1. When the photovoltaic panel generates heat or the temperature inside the frame is high due to sunlight, the heat dissipation component is activated to discharge the heat inside the frame from the air outlet through the heat dissipation airflow, i.e. air cooling, thereby increasing the heat dissipation rate inside the frame. When several frames form a curtain wall, the overall heat dissipation efficiency of the photovoltaic curtain wall is improved, thereby reducing the reduction in the photoelectric conversion efficiency of the photovoltaic panel due to the high temperature and improving the overall photoelectric conversion efficiency of the photovoltaic panel;

2. Automatic opening and closing of the cooling fan. When the temperature is high, it starts to dissipate heat, lower the temperature inside the frame, and improve the working efficiency of the photovoltaic panels. When the temperature is low, it automatically shuts down to save electricity and improve the energy saving and environmental protection of the photovoltaic curtain wall.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application.

FIG. 2 is a partial structural diagram of an embodiment of the present application.

FIG. 3 is a temperature detection circuit diagram of an embodiment of the present application.

Description of reference numerals:

1. Frame; 2. Photovoltaic panel; 3. Protection plate; 4. Air inlet; 5. Air outlet; 6. Rain shield; 7. Cooling fan; 8. Stiffening rod; 9. Temperature sensor; 10. Temperature comparison unit; 11. Switch unit.

DETAILED DESCRIPTION

The present application is further described in detail below in conjunction with Figures 1-3.

The embodiment of the present application discloses a photovoltaic curtain wall. Referring to Figures 1 and 2, a photovoltaic curtain wall includes a plurality of photovoltaic panels 2 and a plurality of frames 1 for mounting the photovoltaic panels 2. The plurality of photovoltaic panels 2 are mounted one-to-one with the plurality of frames 1. The plurality of frames 1 are mounted on the exterior wall of a building to form a curtain wall. The peripheral wall of the photovoltaic panel 2 is fixed to the inner wall of the frame 1. The side of the photovoltaic panel 2 close to the exterior wall of the building is connected to the frame 1 with a plurality of stiffening rods 8. The stiffening rods 8 are evenly laid in the frame 1 to ensure uniform force.

1 and 2 , a protective plate 3 is also installed on the side of the frame 1 close to the outside. The protective plate 3 is a transparent tempered glass plate. The protective plate 3 and the photovoltaic panel 2 are installed on the frame 1 from the outside to the inside in sequence, that is, the protective plate 3 is located on the side of the photovoltaic panel 2 away from the outer wall of the building. The protective plate 3 makes the photovoltaic panel 2 not easily damaged, thereby extending the service life of the photovoltaic panel 2.

1 and 2, a plurality of air inlets 4 and a plurality of air outlets 5 are provided on the side walls of the frame 1. The plurality of air inlets 4 are provided on the same side of the frame 1, and the plurality of air outlets 5 are provided on the opposite side of the frame 1. A plurality of rain shields 6 are installed on the outer side of the frame 1, some of the rain shields 6 are installed on the air inlets 4, and other parts of the rain shields 6 are installed on the air outlets 5. The rain shields 6 make it difficult for rainwater to enter the frame 1 from the air inlets 4 or the air outlets 5, thereby protecting the internal structure of the frame 1 from being damaged by rainwater.

1 and 2 , a photovoltaic curtain wall also includes a heat dissipation assembly, which includes a plurality of heat dissipation fans 7 , which are respectively installed at the air inlet 4 and the air outlet 5 , and the wind directions of the heat dissipation fans 7 are all in the same direction to form a heat dissipation airflow from the air inlet 4 to the air outlet 5 .

2 and 3, the cooling fan 7 is coupled to a control circuit, the control circuit is used to control the cooling fan 7 to be turned on or off, and the control circuit includes a temperature sensor 9, a temperature comparison unit 10 and a switch unit 11. The temperature sensor 9 is built between the frame 1 and the photovoltaic panel 2, and the temperature sensor 9 is used to detect the temperature in the frame 1 and send a temperature detection signal.

3 , the temperature comparison unit 10 is coupled to the temperature sensor 9 and is provided with a threshold signal VREF to send out a temperature comparison signal when the temperature detection signal is greater than the threshold signal; the temperature comparison unit 10 includes a comparator N1, a first signal input terminal of the comparator N1 is a positive input terminal, the positive input terminal is also coupled to the temperature sensor 9, a second signal input terminal of the comparator N1 is an inverting input terminal, the inverting input terminal is connected to the threshold signal VREF, and a signal output terminal of the comparator N1 is coupled to the switch unit 11.

3 , the switch unit 11 is coupled to the temperature comparison unit 10 and is connected in series in the power supply circuit of the cooling fan 7, so that when the switch unit 11 receives the temperature comparison signal, the power supply circuit of the cooling fan 7 is turned on, and the cooling fan 7 is started when the start signal is received, and is used to disconnect the power supply circuit of the cooling fan 7 when the temperature comparison signal is not received, so the cooling fan 7 is automatically turned off when the temperature comparison signal is not received; the switch unit 11 includes a PNP transistor Q1 and a relay KM1, the base of the transistor Q1 is coupled to the signal output end of the comparator N1, the emitter of the transistor Q1 is coupled to the power supply voltage VCC, the collector of the transistor Q1 is connected in series with the coil of the relay KM1 and then grounded, and the relay KM1 includes a normally open contact switch KM1-1, and the normally open contact switch KM1-1 is connected in series in the power supply circuit of the cooling fan 7.

The implementation principle of a photovoltaic curtain wall in an embodiment of the present application is as follows: when the photovoltaic panel 2 generates heat due to operation or the temperature inside the frame 1 is high due to sunlight exposure, the heat dissipation component is started, and the heat inside the frame 1 is discharged from the air outlet 5 through the heat dissipation airflow, i.e., air cooling, thereby increasing the heat dissipation rate inside the frame 1. When a plurality of frames 1 form a curtain wall, the overall heat dissipation efficiency of the photovoltaic curtain wall is improved, thereby reducing the photoelectric conversion efficiency of the photovoltaic panel 2 due to the high temperature and improving the overall photoelectric conversion efficiency of the photovoltaic panel 2.

The temperature sensor 9 detects the temperature inside the frame 1 in real time. When the temperature is higher than the value set by the temperature sensor 9, the temperature detection signal is greater than the threshold signal VREF, and the temperature comparison unit 10 sends a start signal to the switch unit 11, and the cooling fan 7 starts. When the detected temperature is lower than the set value of the temperature sensor 9, the temperature detection signal is less than the threshold signal VREF, the temperature comparison unit 10 does not send a temperature comparison signal, and the cooling fan 7 does not start; thereby realizing the automatic opening and closing of the cooling fan 7. When the temperature is high, it starts to dissipate heat, reduces the temperature in the frame 1, and improves the working efficiency of the photovoltaic panel 2. When the temperature is low, it automatically shuts down to save electricity and improve the energy saving and environmental protection of the photovoltaic curtain wall.

The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims (7)

1. The utility model provides a photovoltaic curtain, its characterized in that includes a plurality of photovoltaic board (2), a plurality of be used for installing frame (1) and the radiator unit of photovoltaic board (2), a plurality of photovoltaic board (2) and a plurality of frame (1) one-to-one installation, the perisporium of photovoltaic board (2) with the inside wall of frame (1) is fixed, a plurality of frame (1) are used for installing in the building outer wall in order to form the curtain, air intake (4) and air outlet (5) have been seted up to frame (1), the radiator unit set up in be used for forming the radiating air current in frame (1), radiator unit includes a plurality of radiator fan (7), radiator fan (7) all install in frame (1), a plurality of radiator fan (7) are unified towards, radiator fan (7) are used for forming from air current of air intake (4) to air outlet (5), radiator fan (7) all couple to have temperature detection circuit, temperature detection circuit includes temperature sensor (9), temperature comparison unit (10) and switch unit (11);

The temperature sensor (9) is arranged between the frame (1) and the photovoltaic panel (2), and the temperature sensor (9) is used for detecting the temperature in the frame (1) and sending out a temperature detection signal;

the temperature comparison unit (10) is coupled to the temperature sensor (9) and is provided with a threshold signal VREF to emit a temperature comparison signal when the temperature detection signal is greater than the threshold signal VREF; when the temperature detection signal is smaller than the threshold signal VREF, a temperature comparison signal is not sent out;

The switch unit (11) is coupled to the temperature comparison unit (10) and is connected in series in the power supply loop of the cooling fan (7) so as to be used for conducting the power supply loop of the cooling fan (7) when the temperature comparison signal is received, the cooling fan (7) is started when the starting signal is received, and the power supply loop of the cooling fan (7) is disconnected when the temperature comparison signal is not received, and the cooling fan (7) is automatically closed when the temperature comparison signal is not received.

2. A photovoltaic curtain wall according to claim 1, characterized in that the frame (1) is further provided with a protective plate (3), the protective plate (3) is a transparent glass plate, the protective plate (3) and the photovoltaic plate (2) are sequentially arranged on the frame (1) from outside to inside, i.e. the protective plate (3) is positioned on one surface of the photovoltaic plate (2) far away from the building outer wall.

3. A photovoltaic curtain wall according to claim 1, characterized in that the outer side of the frame (1) is provided with a plurality of rain baffles (6), part of the rain baffles (6) are arranged at the air inlet (4), and the other part of the rain baffles (6) are arranged at the air outlet (5).

4. A photovoltaic curtain wall according to claim 1, characterized in that a plurality of air inlets (4) are all arranged on the same side of the frame (1), a plurality of air outlets (5) are all arranged on the opposite side of the frame (1), and the heat dissipation component is used for forming air flow from one side of the air inlets (4) to one side of the air outlets (5).

5. The photovoltaic curtain wall according to claim 1, characterized in that the temperature comparison unit (10) comprises a comparator N1, a first signal input of the comparator N1 being coupled to the temperature sensor (9), a second signal input of the comparator N1 being connected to the threshold signal VREF, and a signal output of the comparator N1 being coupled to the switching unit (11).

6. The photovoltaic curtain wall according to claim 5, characterized in that the switching unit (11) comprises a triode Q1, a base electrode of the triode Q1 is coupled to a signal output terminal of the comparator N1, an emitter electrode of the triode Q1 is coupled to a power supply voltage VCC, and a collector electrode of the triode Q1 is grounded.

7. A photovoltaic curtain wall according to claim 6, characterized in that the switch unit (11) further comprises a relay KM1, the coil of the relay KM1 is connected in series with the collector of the triode Q1 and then grounded, the relay KM1 comprises a normally open contact switch KM1-1, and the normally open contact switch KM1-1 is connected in series in the power supply loop of the radiator fan (7).