Novel photovoltaic support structure

Abstract

The utility model relates to a novel photovoltaic support structure, which belongs to the field of photovoltaic technology and comprises a support structure formed by mutually connecting a main beam, a connecting beam, a purline and a support column, an enclosure structure is arranged on the support structure, and a light reflecting device and a sensing control device are arranged in the support structure. The enclosure structure comprises a double-glass assembly, a thin film and a film rolling device, the double-glass assembly is fixed to the upper end of the supporting structure, and the thin film is arranged on the outer side of the supporting structure and can be rolled and unrolled through the film rolling device; the film rolling device is located below the double-glass assembly and can reflect sunlight entering the supporting structure to a back plate of the double-glass assembly, and the sensing control device is connected with the film rolling device and the light reflecting device and can control the film rolling device and the light reflecting device to work. And the novel photovoltaic support structure can actively improve the light incoming amount gain power generation of the back plate of the double-glass assembly through the light reflecting device.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaic building integration, in particular to a new photovoltaic support structure. Background Art

[0002] The development of solar photovoltaic module efficiency improvement technology can be roughly divided into two categories: one is to improve the photoelectric conversion efficiency of the module battery; the other is to increase the amount of light entering the photovoltaic module: for example, the light transmittance of photovoltaic glass determines the power generation efficiency of the module; the double-glass module can achieve a 3% to 60% power generation gain by relying on the back panel photoelectric conversion rate of 85-95% of the front; the tracking bracket can increase the power generation by 10-30% by actively adjusting the direction of the module to maximize the use of solar radiation by tracking the sun's position in real time; the reflective film can increase the amount of light entering the back panel of the double-glass module and obtain a maximum increase of 12% in power generation.

[0003] The above-mentioned technical solutions for increasing the amount of light entering the components all have shortcomings: 1. Although the reflective film has a low cost, its power generation gain is low and it needs to be completely replaced every five years at most; 2. The dual-axis tracking bracket has a higher gain but the technology is immature, the cost is high and maintenance is difficult, which is not economical; 3. The single-axis tracking bracket has a more mature technology, simpler maintenance, lower cost, and better power generation gain (12-15%). It is currently the most widely used and economically beneficial tracking bracket.

[0004] In actual applications, the annual power generation gain of the backsheet of double-glass modules is 3-5%. Even though the utilization rate of the backsheet's power generation capacity is so low, it still has good economic benefits. As it is becoming increasingly difficult to improve the photovoltaic conversion efficiency of modules, in order to effectively reduce the cost of electricity generation, improving the power generation gain of the backsheet is a good measure.

[0005] Photovoltaic building integrated greenhouses have problems such as low layout density of photovoltaic panels, low power generation efficiency of photovoltaic panels, and poor economic benefits. A new photovoltaic support structure is urgently needed to change the status quo. Utility Model Content

[0006] The utility model aims to provide a novel photovoltaic support structure which can improve the comprehensive utilization rate of land and increase the amount of light entering the back plate of the double-glass component panel by actively reflecting sunlight to increase power generation.

[0007] The purpose of the utility model is achieved in this way:

[0008] A novel photovoltaic support structure comprises a supporting structure composed of a main beam, a connecting beam, a purlin and a supporting column connected to each other, an enclosure structure is arranged on the supporting structure, a reflective device and a sensor control device are arranged in the supporting structure, the enclosure structure comprises a double-glass component, a film and a film roll, the double-glass component is fixed to the upper end of the supporting structure, the film is arranged on the outer side of the supporting structure and can be rolled up and unrolled by the film roll; the reflective device is located below the double-glass component and can reflect sunlight incident into the supporting structure to the back plate of the double-glass component, the sensor control device is connected to the film roll and the reflective device, and can control the film roll and the reflective device to work.

[0009] In the above-mentioned new photovoltaic bracket structure, the reflective device includes a reflective film, a rotating bracket, a rotating rod, a motor and a bearing. The reflective film is arranged on the rotating bracket, and the rotating bracket is fixed on the rotating rod. The rotating rod is arranged on the main beam, and a bearing is arranged between the rotating rod and the main beam. The motor drives the rotating rod to rotate. After the reflective film rotates, it can reflect the sunlight entering the greenhouse onto the back plate of the double-glass component. The motor and the bearing are fixed on the supporting structure.

[0010] In the above-mentioned novel photovoltaic support structure, the angle between the reflective film and the ground plane is 0-60 degrees, and the reflective surface faces upward.

[0011] In the above-mentioned novel photovoltaic support structure, the reflective film is a planar structure or a curved structure.

[0012] In the above-mentioned novel photovoltaic support structure, the distance between the reflective film and the double-glass component is at least one meter.

[0013] In the above-mentioned novel photovoltaic support structure, after the reflective film is rotated, the distance between the lower end thereof and the ground is 0.5-6 meters.

[0014] In the above-mentioned novel photovoltaic support structure, a rotation gap is left between two adjacent reflective films, and each reflective film can rotate independently.

[0015] In the above-mentioned new photovoltaic support structure, the sensor control device includes a controller and a sensor group. The controller is connected to the motor and the film roller. The sensor group is used to collect data such as sunlight radiation, weather conditions, the rotation angle of the reflective film, and the real-time power generation power of the double-glass component, and converts them into digital signals and transmits them to the controller. The controller will receive the data from the sensor group and output signals after calculation to control the opening and closing of the film and the rotation angle of the reflective film.

[0016] In the above-mentioned new photovoltaic support structure, the sensor group is composed of several sensors with different functions, which are respectively arranged at different positions of the support structure, and are used to collect real-time data on radiation conditions, weather conditions, the angle between the reflective film and the horizontal plane, and the real-time power generation data of the double-glass components in the greenhouse environment.

[0017] Compared with the prior art, the utility model has the following outstanding and beneficial technical effects:

[0018] The utility model adopts photovoltaic building integration technology, and the supporting structure is not only the structural framework of the greenhouse, but also the fixed bracket of the photovoltaic module, which not only improves the wind and snow resistance of the photovoltaic module, but also saves supporting materials. A double-sided module is set on the roof, and the front of the double-glass module can directly absorb sunlight to generate electricity; the reflective device set on the supporting structure actively changes the rotation angle of the reflective film to reflect the sunlight on the reflective film to the back plate of the double-glass module, increase the amount of light entering the back plate to increase power generation, improve the power generation efficiency of the double-glass module, and reduce the cost of power generation.

[0019] The supporting structure of the utility model is provided with a film on the outside, and the film and the double-glass components together form a closed space, in which breeding or planting activities can be carried out, photovoltaic power generation on the roof and breeding under the shed are realized, thereby improving the utilization rate of land resources and economic benefits. In addition to being built in farmland and ponds, this new photovoltaic greenhouse can also be built in deserts, wastelands, gardens, mountains, etc. Since a film is provided on the greenhouse, it can not only adjust the microclimate of the space inside the greenhouse, but also improve the regional microclimate and improve the efficiency of agricultural production; in addition to preventing the sand in the greenhouse from being affected by the wind, it can also effectively reduce the disturbance of the wind to the dust on the ground near the outside of the greenhouse, and promote the improvement of the soil in the desert or wasteland. If power generation is the main purpose, the height and spacing of the new photovoltaic greenhouse can meet the power generation needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the utility model.

[0021] Figure 2 It is an enlarged view of point A of the present utility model.

[0022] Figure 3 It is a schematic diagram of the reflective device of the utility model.

[0023] 1-support structure; 2-enclosing structure; 3-reflective device; 4-sensing control device; 11-main beam;

[0024] 12-connecting beam; 13-purlin; 14-support column; 21-double glass assembly; 22-film; 23-film roll;

[0025] 31-reflective film; 32-rotating bracket; 33-rotating rod; 34-motor. DETAILED DESCRIPTION

[0026] The present invention will be further described below with reference to specific embodiments of the invention:

[0027] like Figure 1-Figure 3 As shown: a new type of photovoltaic support structure, including a supporting structure 1 composed of a main beam 11, a connecting beam 12, a purlin 13 and a supporting column 14 connected to each other, a protective structure 2 is arranged on the supporting structure 1, a reflective device 3 and a sensor control device 4 are arranged in the supporting structure 1, the protective structure 2 includes a double glass component 21, a film 22 and a film roll 23, the double glass component 21 is fixed to the upper end of the supporting structure 1, the film 22 is arranged on the outside of the supporting structure 1, and can be rolled up by the film roll 23; the reflective device 3 is located below the double glass component 21, and can reflect the sunlight incident into the supporting structure 1 to the back plate of the double glass component 21, the The sensor control device 4 is connected to the film roll 23 and the reflective device 3, and can control the film roll 23 and the reflective device 3 to work. The main beam, the connecting beam and the purlin are connected to each other to form an upper support frame. At the same time, the upper support frame is basically a triangular column structure. A lower support frame can be formed between the connecting beam and the support column. The lower support frame is a rectangular or cube structure. The reflective device is arranged between the lower support frames. The double glass component is fixed to the upper end of the upper support frame. The film covers the outer side of the support frame except the double glass component. The double glass component can be arranged at any position of the upper support frame. In actual application, in order to ensure the power generation efficiency of the double glass component, it is generally arranged on the sunny part of the upper support frame. The sunlight entering the greenhouse is reflected to the back plate of the double glass component by the rotation of the reflective film, thereby improving the power generation efficiency of the back plate of the double glass component; when it rains, snows or is windy, the film is lowered by the film roll to block rain, snow and wind, and avoid damage to the reflective device caused by too much wind, rain and snow. On non-windy days, after the sun rises, the film on the outside of the supporting structure is rolled up by the film roll, and the sunlight can directly shine into the greenhouse. A spray pipe is also set on the supporting structure. The designed spray pipe can clean the double-glass components and reflective film, which can improve the surface cleanliness of the double-glass components and reflective film and increase the power generation efficiency of the system. It is worth mentioning that the double-glass components are double-sided double-glass solar photovoltaic panels, and the reflective film can be replaced by a reflector. The film can also be replaced by other transparent materials.

[0028] In the above-mentioned novel photovoltaic support structure, the reflective device 3 includes a reflective film 31, a rotating support 32, a rotating rod 33, a motor 34 and a bearing. The reflective film 31 is arranged on the rotating support 32, and the rotating support 32 is fixed on the rotating rod 33. The rotating rod 33 is arranged on the main beam, and a bearing is arranged between the rotating rod and the main beam. The motor 34 drives the rotating rod 33 to rotate. After the reflective film 31 rotates, it can reflect the sunlight incident on the greenhouse to the back plate of the double glass component 21. The motor 34 and the bearing are fixed on the support structure 1. The angle between the reflective film 31 and the ground plane is 0-60 degrees, and the reflective surface faces upward; the reflective film can reflect sunlight to the back plate of the double glass component by rotation, thereby improving the power generation efficiency; specifically, the reflective film, the rotating support, the rotating rod and the motor, and the bearing are a group, and multiple groups of reflective devices are arranged on the support structure, so that the rotation angle of each group of reflective films can be controlled separately; the bearing fixed on the main beam can reduce the simply supported length and deformation of the rotating rod, and increase the rotation stability.

[0029] In the above-mentioned novel photovoltaic support structure, the reflective film 31 is fixed on the rotating support 32 and is a planar structure or a curved structure. This is to increase the amount of light entering per unit area of ​​the photovoltaic backplane and further improve the power generation efficiency of the double-glass component.

[0030] In the above-mentioned novel photovoltaic support structure, the distance between the reflective film 31 and the double-glass component 21 is at least one meter. This not only facilitates the rotation of the reflective film to reflect sunlight to the back plate of the double-glass component, but also increases the amount of sunlight entering the greenhouse.

[0031] In the above-mentioned novel photovoltaic support structure, after the reflective film 31 is rotated, the distance between the lower end thereof and the ground is 0.5-6 meters. Specifically, different heights can be set according to different usage requirements.

[0032] In the above-mentioned novel photovoltaic support structure, a rotation gap is left between the two adjacent groups of reflective films 31, and each group of reflective films 31 can rotate independently, so as to avoid interference between the two reflective films during rotation.

[0033] In the above-mentioned new photovoltaic support structure, the sensor control device 4 includes a controller and a sensor group. The controller is connected to the motor 34 and the film roller 23. The sensor group is used to collect data such as sunlight radiation, weather conditions, the rotation angle of the reflective film, and the real-time power generation of the double-glass component, and converts them into digital signals and transmits them to the controller. The controller will receive the data from the sensor group, and output signals after calculation to control the opening and closing of the film 22 and the rotation angle of the reflective film 31. The sensor group is composed of several sensors with different functions, which are respectively arranged at different positions of the supporting structure 1, and are used to collect data such as radiation conditions, weather conditions, the angle between the reflective film and the horizontal plane, and the real-time power generation of the double-glass component in the greenhouse environment in real time. Specifically, multiple sensors are used to accurately collect relevant data inside and outside the greenhouse, improve rotation accuracy, and further increase the power generation power of the back panel of the double-glass component. Multiple groups of greenhouses can use one set of sensors.

[0034] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A new photovoltaic support structure, characterized in that: The invention comprises a supporting structure (1) composed of a main beam (11), a connecting beam (12), a purlin (13) and a supporting column (14) connected to each other, a protective structure (2) being arranged on the supporting structure (1), a reflective device (3) and a sensor control device (4) being arranged inside the supporting structure (1), the protective structure (2) comprising a double-glass component (21), a film (22) and a film roll (23), the double-glass component (21) being fixed to the upper end of the supporting structure (1), the film (22) being arranged on the outer side of the supporting structure (1) and being able to be rolled up and unrolled by the film roll (23); the reflective device (3) being located below the double-glass component (21) and being able to reflect sunlight incident into the supporting structure (1) onto the back plate of the double-glass component (21), the sensor control device (4) being connected to the film roll (23) and the reflective device (3) and being able to control the film roll (23) and the reflective device (3) to work.

2. The novel photovoltaic support structure according to claim 1 is characterized in that: The reflective device (3) comprises a reflective film (31), a rotating bracket (32), a rotating rod (33), a motor (34) and a bearing. The reflective film (31) is arranged on the rotating bracket (32), the rotating bracket (32) is fixed on the rotating rod (33), the rotating rod (33) is arranged on the main beam, a bearing is arranged between the rotating rod and the main beam, the motor (34) drives the rotating rod (33) to rotate, and the reflective film (31) can reflect sunlight incident on the greenhouse onto the back plate of the double-glass component (21) after rotating. The motor (34) and the bearing are fixed on the supporting structure (1).

3. The novel photovoltaic support structure according to claim 2 is characterized in that: The angle between the reflective film (31) and the ground plane is 0-60 degrees, and the reflective surface faces upward.

4. The novel photovoltaic support structure according to claim 2 or 3 is characterized in that: The reflective film (31) is a planar structure or a curved structure.

5. The novel photovoltaic support structure according to claim 4 is characterized in that: The distance between the reflective film (31) and the double-glass assembly (21) is at least one meter.

6. The novel photovoltaic support structure according to claim 4 is characterized in that: After the reflective film (31) is rotated, the distance between its lower end and the ground is 0.5-6 meters.

7. The novel photovoltaic support structure according to claim 4 is characterized in that: A rotation gap is left between two adjacent reflective films (31), and each reflective film (31) can rotate independently.

8. The novel photovoltaic support structure according to claim 1 is characterized in that: The sensor control device (4) comprises a controller and a sensor group. The controller is connected to the motor (34) and the film roller (23). The sensor group is used to collect sunlight radiation conditions, weather conditions, the rotation angle of the reflective film and the real-time power generation of the double-glass component, and convert them into digital signals and transmit them to the controller. The controller calculates the data received from the sensor group and outputs a signal to control the opening and closing of the film (22) and the rotation angle of the reflective film (31).

9. The novel photovoltaic support structure according to claim 8 is characterized in that: The sensor group is composed of several sensors with different functions, which are respectively arranged at different positions of the supporting structure, and are used to collect real-time data on radiation conditions, weather conditions, the angle between the reflective film and the horizontal plane, and the real-time power generation data of the double-glass components in the greenhouse environment.

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