A photovoltaic glass greenhouse with uniform light transmission

Abstract

The utility model discloses a photovoltaic glass greenhouse with uniform light transmission, wherein the first top plate unit includes a light homogenizing assembly and a photovoltaic assembly, wherein a plurality of first light homogenizing plates of the light homogenizing assembly are arranged in sequence, a plurality of photovoltaic panels of the photovoltaic assembly can be opened and installed above the first light homogenizing plates, and a plurality of photovoltaic panels are arranged at intervals on the plurality of first light homogenizing plates, and the light transmission surface of the first light homogenizing plates has a Fresnel lens fine structure formed by periodically arranged tooth-like protrusions, which is used to homogenize the incident light below the first light homogenizing plates on both sides. The photovoltaic glass greenhouse with uniform light transmission through the above-mentioned optimized design can be opened and installed above the light homogenizing plates through photovoltaic panels, and the photovoltaic panels can be opened or closed according to the changes in ambient light intensity, thereby changing the top light transmission area, thereby maximizing the use of light energy through photovoltaic panels while meeting the growth requirements of plants under different light changes, and achieving a balance between photovoltaics and agriculture.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic glass greenhouses, in particular to a photovoltaic glass greenhouse with uniform light transmission. Background Art

[0002] The core technology of "photovoltaic agriculture" is to solve the problem of "photovoltaic" and "agriculture" competing for land. At present, the main solution of photovoltaic agriculture at home and abroad adopts pure geometric splitting, that is, arranging photovoltaic cells according to a certain duty cycle, so that some plants under the photovoltaic panels can receive part of the sunlight at different time periods. However, this solution will essentially cause uneven lighting in agriculture, resulting in uneven growth of crops.

[0003] In addition, in the spring and summer when the sun is abundant, from 11:00 am to 2:00 pm, the light intensity in the glass greenhouse exceeds the saturated light absorption intensity of crops, and most greenhouse plants are forced to take a nap. Installing photovoltaic panels on farmland will essentially weaken the average light intensity on the farmland below the photovoltaic panels. Therefore, when the light is appropriately weakened, it can actually promote the increase in crop yields and income. In the morning and evening and in the autumn and winter seasons when the sunlight is weaker, the presence of photovoltaic panels further affects the light intensity of the farmland below, affecting the growth of plants. Utility Model Content

[0004] In order to solve the technical problems existing in the background technology, the utility model proposes a photovoltaic glass greenhouse with uniform light transmission.

[0005] The utility model provides a photovoltaic glass greenhouse with uniform light transmission, comprising: a first top plate unit;

[0006] The first top plate unit includes a light homogenizing component and a photovoltaic component. The light homogenizing component includes a plurality of first light homogenizing plates arranged in sequence. The photovoltaic component includes a plurality of photovoltaic panels. The photovoltaic panels can be opened and installed above the first light homogenizing plates, and the plurality of photovoltaic panels are arranged at intervals on the plurality of first light homogenizing plates. The light-receiving surface of the first light homogenizing plate is a smooth plane and the light-transmitting surface has a Fresnel lens fine structure formed by periodically arranged toothed protrusions. The first light homogenizing plate is used to homogenize the incident light to the bottom of the first light homogenizing plates on both sides.

[0007] Preferably, a linkage rod is further included, and one end of the photovoltaic panel is rotatably mounted on one end of the first light homogenizing plate corresponding thereto through a rotating shaft, and the linkage rod connects at least two photovoltaic panels to drive the two to rotate simultaneously.

[0008] Preferably, the first top plate unit is arranged horizontally, and the toothed structure on the lower surface of the first light diffuser includes first triangular tooth portions and second triangular tooth portions that are periodically and alternately distributed, and adjacent first triangular tooth portions and second triangular tooth portions are symmetrically arranged, and the inclination angles of the two side surfaces of the first triangular tooth portion are calculated by the following formula:

[0009]

[0010] α1=θ2;

[0011]

[0012] Among them, θ2 and are the inclination angles between the normal planes of the two sides of the first triangular tooth portion and the vertical direction, α1 and β1 are the inclination angles between θ2 and , h is the installation height of the first light diffuser, l is the width of the first light diffuser in the horizontal direction, and n1 is the period number of the first light diffuser.

[0013] Preferably, it also includes a second top plate unit, the first top plate unit and the second top plate unit are arranged relatively inclined, the second top plate unit includes a plurality of second light homogenizing plates arranged in sequence along the horizontal direction, the light receiving surface of the second light homogenizing plate is a smooth plane and the light transmitting surface has a Fresnel lens fine structure formed by periodically arranged toothed protrusions, which is used to homogenize the incident light to the bottom of the first light homogenizing plates on both sides.

[0014] Preferably, the first top plate unit is arranged to be tilted toward the south and the second top plate unit is arranged to be tilted toward the north;

[0015] The tooth-shaped protrusions on the light-transmitting surface of the first light diffuser have an isosceles trapezoidal structure, the upper base width of the isosceles trapezoidal structure is half the lower base width, and the isosceles trapezoidal structure is calculated by the following equation:

[0016]

[0017] Among them, α1 is the hypotenuse angle of the isosceles trapezoidal structure, a is the upper base width of the isosceles trapezoidal structure, n1 is the refractive index of the first light diffuser, n0 is the refractive index of air, L1 is the width of the first light diffuser, H1 is the installation height of the first light diffuser, h1 is the height of the isosceles trapezoidal structure, and k1 is the area ratio of the first light diffuser to the photovoltaic panel.

[0018] Preferably, the number of tooth-shaped protrusion periods of the first light diffuser is N1, and the specific expression formula of N1 is:

[0019]

[0020] Preferably, the sawtooth in the light-transmitting surface of the second light diffuser plate includes a first sawtooth and a second sawtooth, and the specific expression formula of the hypotenuse angle of the first sawtooth and the second sawtooth is:

[0021]

[0022]

[0023] Wherein, θ0 is the inclination angle of the second light diffuser relative to the ground, θ1 is the first sawtooth bevel angle of the light-transmitting surface structural unit of the second light diffuser, θ1′ is the second sawtooth bevel angle of the light-transmitting surface structural unit of the second light diffuser, θ2 is the first angle between the sunlight emitted from the light-transmitting surface of the second light diffuser and the ground, θ2′ is the second angle between the sunlight emitted from the light-transmitting surface of the second light diffuser and the ground, is the altitude angle between the sun and the ground, n0 is the refractive index of the air, and n1 is the refractive index of the second diffuser. According to this set of equations, the hypotenuse angle θ1 of the sawtooth in the light-transmitting surface of the second diffuser can be obtained, H is the installation height of the second diffuser, L2 is the length of the second diffuser, and the length of the photovoltaic panel is the same as the length of the second diffuser.

[0024] Preferably, the period number of the fine structure of the Fresnel lens of the second light homogenizing plate is N2, and the specific expression formula of N2 is:

[0025]

[0026] Among them, L2 is the length of the second light diffuser, θ0 is the inclination angle of the second light diffuser relative to the ground, θ1 is the first sawtooth bevel angle of the light-transmitting surface structural unit of the second light diffuser, θ1′ is the second sawtooth bevel angle of the light-transmitting surface structural unit of the second light diffuser, and h2 is the groove depth of the light-transmitting surface structural unit of the second light diffuser.

[0027] Preferably, the first top plate unit includes three first light diffusers and a first photovoltaic panel and a second photovoltaic panel respectively located above the light diffusers on both sides, and the second top plate unit includes three second light diffusers respectively arranged corresponding to the three first light diffusers.

[0028] Preferably, it also includes a linkage rod, and both ends of the first photovoltaic panel and the second photovoltaic panel are rotatably mounted on the corresponding first light-diffusing panel through a rotating shaft, and the linkage rod connects the adjacent first photovoltaic panel or the second photovoltaic panel to drive the adjacent first photovoltaic panel or the second photovoltaic panel to rotate simultaneously.

[0029] In the utility model, the proposed photovoltaic glass greenhouse with uniform light transmission, the first top plate unit includes a light homogenizing component and a photovoltaic component, the multiple first light homogenizing plates of the light homogenizing component are arranged in sequence, the multiple photovoltaic panels of the photovoltaic component can be opened and installed above the first light homogenizing plates, and the multiple photovoltaic panels are arranged at intervals on the multiple first light homogenizing plates, and the light-transmitting surface of the first light homogenizing plates has a Fresnel lens fine structure formed by periodically arranged toothed protrusions, which is used to homogenize the incident light below the first light homogenizing plates on both sides. Through the above-mentioned optimized design of the photovoltaic glass greenhouse with uniform light, the photovoltaic panels can be opened and installed above the light homogenizing plates, and the photovoltaic panels can be turned on or off according to the changes in ambient light intensity to change the top light transmission area, thereby maximizing the use of light energy through photovoltaic panels while meeting the growth needs of plants under different light changes, and achieving a balance between photovoltaics and agriculture. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of a photovoltaic panel closed in one embodiment of a photovoltaic glass greenhouse with uniform light transmission proposed by the utility model.

[0031] Figure 2 This is a schematic diagram of a photovoltaic panel opened in one embodiment of a photovoltaic glass greenhouse with uniform light transmission proposed by the utility model.

[0032] Figure 3 This is a schematic diagram of the light path of a light homogenizing plate in one embodiment of a photovoltaic glass greenhouse with uniform light transmission proposed by the utility model.

[0033] Figure 4 This is a schematic diagram of the light path of the light-transmitting surface of the light-homogenizing plate in one embodiment of a photovoltaic glass greenhouse with uniform light transmittance proposed by the utility model.

[0034] Figure 5 This is a schematic diagram of another embodiment of a photovoltaic glass greenhouse with uniform light transmission proposed by the utility model when the photovoltaic panels are closed.

[0035] Figure 6 This is a schematic diagram of the light path when the photovoltaic panels are closed in another embodiment of a photovoltaic glass greenhouse with uniform light transmission proposed by the utility model.

[0036] Figure 7 This is a cross-sectional schematic diagram of a light homogenizing plate in another embodiment of a photovoltaic glass greenhouse with uniform light transmission proposed by the utility model.

[0037] Figure 8 This is a schematic diagram of the design of the first light homogenizing plate in another embodiment of a photovoltaic glass greenhouse with uniform light transmission proposed by the utility model.

[0038] Fig. 9This is a schematic diagram of the design of the second light homogenizing plate in another embodiment of a photovoltaic glass greenhouse with uniform light transmission proposed by the utility model. DETAILED DESCRIPTION

[0039] like Figures 1 to 9 As shown, Figure 1 This is a schematic diagram of a photovoltaic panel closed in one embodiment of a photovoltaic glass greenhouse with uniform light transmission proposed by the utility model. Figure 2 This is a schematic diagram of a photovoltaic panel opened in one embodiment of a photovoltaic glass greenhouse with uniform light transmission proposed by the utility model. Figure 3 This is a schematic diagram of the light path of a uniform light-transmitting photovoltaic glass greenhouse in one embodiment of the utility model. Figure 4 This is a schematic diagram of the light path of the light-transmitting surface of the light-diffusing plate in one embodiment of a photovoltaic glass greenhouse with uniform light transmission proposed by the utility model. Figure 5 This is a schematic diagram of another embodiment of a photovoltaic glass greenhouse with uniform light transmission proposed by the utility model when the photovoltaic panels are closed. Figure 6 This is a schematic diagram of the light path when the photovoltaic panels are turned off in another embodiment of a photovoltaic glass greenhouse with uniform light transmission proposed by the utility model. Figure 7 This is a cross-sectional schematic diagram of a light homogenizing plate in another embodiment of a photovoltaic glass greenhouse with uniform light transmission proposed by the utility model. Figure 8 This is a schematic diagram of the design of the first light-diffusing plate in another embodiment of a photovoltaic glass greenhouse with uniform light transmission proposed by the utility model. Fig. 9 This is a schematic diagram of the design of the second light homogenizing plate in another embodiment of a photovoltaic glass greenhouse with uniform light transmission proposed by the utility model.

[0040] Reference Figure 1 and 2 The utility model provides a photovoltaic glass greenhouse with uniform light transmission, comprising: a first top plate unit;

[0041] The first top plate unit includes a light homogenizing component and a photovoltaic component. The light homogenizing component includes a plurality of first light homogenizing plates 1 arranged in sequence. The photovoltaic component includes a plurality of photovoltaic panels 2. The photovoltaic panels 2 can be opened and installed above the first light homogenizing plates 1, and the plurality of photovoltaic panels 2 are arranged at intervals on the plurality of first light homogenizing plates 1. The light receiving surface of the first light homogenizing plate 1 is a smooth plane and the light transmitting surface has a Fresnel lens fine structure formed by periodically arranged toothed protrusions. The first light homogenizing plate 1 is used to homogenize the incident light to the bottom of the first light homogenizing plates 1 on both sides.

[0042] During the specific operation of the photovoltaic glass greenhouse with uniform light transmission of this embodiment, in an environment with sufficient sunlight, the photovoltaic panel covers part of the first light-diffusing plate, and part of the sunlight passes through the uncovered first light-diffusing plate, and after being homogenized by the first light-diffusing plate, it is evenly irradiated to the first light-diffusing plate and the bottom of the photovoltaic panels on both sides, thereby evenly irradiating the plants in the greenhouse, and the other part of the sunlight is received and utilized by the photovoltaic panel. When the sunlight is insufficient, the photovoltaic panel is turned on so that all the first light-diffusing plates are not blocked, and all the sunlight is homogenized by the first light-diffusing plate and irradiated to the plants in the greenhouse, meeting the lighting needs of the plants.

[0043] In this embodiment, the proposed photovoltaic glass greenhouse with uniform light transmission, the first top plate unit includes a light homogenization component and a photovoltaic component, multiple first light homogenization plates of the light homogenization component are arranged in sequence, multiple photovoltaic panels of the photovoltaic component can be opened and installed above the first light homogenization plate, and multiple photovoltaic panels are arranged at intervals on multiple first light homogenization plates, and the light-transmitting surface of the first light homogenization plate has a Fresnel lens fine structure formed by periodically arranged toothed protrusions, which is used to homogenize the incident light below the first light homogenization plates on both sides. Through the above-mentioned optimized design of uniform light photovoltaic glass greenhouse, the photovoltaic panel can be opened and installed above the light homogenization plate, and the photovoltaic panel can be turned on or off according to the change of ambient light intensity to change the top light transmission area, so as to maximize the use of light energy through the photovoltaic panel while meeting the growth needs of plants under different light changes, and achieve a balance between photovoltaics and agriculture.

[0044] Reference Figure 3 and 4 In one implementation of the photovoltaic glass greenhouse of this embodiment, the first top plate unit is arranged horizontally, and multiple first top plate units are arranged in an array on the top of the greenhouse, and the photovoltaic panels and the first light diffuser are evenly distributed on the top of the greenhouse. At this time, in the specific design of the first light diffuser, the toothed structure on the lower surface of the first light diffuser 1 includes a first triangular tooth portion and a second triangular tooth portion that are periodically alternately distributed, and the adjacent first triangular tooth portions and the second triangular tooth portions are symmetrically arranged, and the inclination angles of the two sides of the first triangular tooth portion are calculated by the following formula:

[0045]

[0046] α1=θ2;

[0047]

[0048] Among them, θ2 and are the inclination angles between the normal planes of the two sides of the first triangular tooth portion and the vertical direction, α1 and β1 are the inclination angles between θ2 and , h is the installation height of the first light diffuser 1 , l is the width of the first light diffuser 1 in the horizontal direction, and n1 is the period number of the first light diffuser 1 .

[0049] When there is sufficient sunshine, the photovoltaic panel covers part of the first light-diffusing plate, and part of the sunlight passes through the uncovered first light-diffusing plate, and after being homogenized by the first light-diffusing plate, it is evenly irradiated under the first light-diffusing plate and the photovoltaic panels adjacent on both sides, thereby evenly irradiating the plants in the greenhouse, and the other part of the sunlight is received and utilized by the photovoltaic panel. When there is insufficient sunshine, the photovoltaic panel is opened so that the first light-diffusing plate under the photovoltaic panel is exposed to the sunlight, and all the sunlight is homogenized by the first light-diffusing plate and irradiated on the plants in the greenhouse, meeting the lighting needs of the plants.

[0050] In order to avoid snow accumulation on the top of the greenhouse, the northern part of China usually adopts a pointed roof greenhouse or a W-shaped roof structure, so that the photovoltaic panels will not be affected by snow and affect the photovoltaic power generation capacity or be difficult to open. Figure 5 and 6 In another photovoltaic glass greenhouse of this embodiment, a second top plate unit is also included. The first top plate unit and the second top plate unit are arranged relatively tilted, and environmental dust and snow can slide to both sides along the surface of the top plate unit. The second top plate unit includes a plurality of second light homogenizing plates 4 arranged in sequence along the horizontal direction. The light receiving surface of the second light homogenizing plates 4 is a smooth plane and the light transmitting surface has a Fresnel lens fine structure formed by periodically arranged tooth-shaped protrusions, which is used to homogenize the incident light to the bottom of the first light homogenizing plates 1 on both sides.

[0051] In a specific arrangement, the first top panel unit is tilted toward the south and the second top panel unit is tilted toward the north. When there is sufficient sunlight, in the first top panel unit, the photovoltaic panel covers part of the first light-diffusing panel, and the sunlight passing through the uncovered first light-diffusing panel is irradiated to the bottom of the photovoltaic panel and adjacent to the photovoltaic panel on both sides after being homogenized. In the second top panel unit, the sunlight passing through the second light-diffusing panel is homogenized, and in addition to the bottom of the second light-diffusing panel, it also irradiates to the bottom of the adjacent first top panel unit and the second top panel unit, and part of the sunlight is received and utilized by the photovoltaic panel.

[0052] Reference Figure 7-9 In one design of the first light diffuser, the tooth-shaped protrusions on the light-transmitting surface of the first light diffuser 1 have an isosceles trapezoidal structure, the upper base width of the isosceles trapezoidal structure is half the lower base width, and the isosceles trapezoidal structure is calculated by the following equation:

[0053]

[0054] Among them, α1 is the hypotenuse angle of the isosceles trapezoidal structure, a is the upper base width of the isosceles trapezoidal structure, n1 is the refractive index of the first light diffuser 1, n0 is the refractive index of air, L1 is the width of the first light diffuser 1, H1 is the installation height of the first light diffuser 1, h1 is the height of the isosceles trapezoidal structure, and k1 is the area ratio of the first light diffuser 1 to the photovoltaic panel 2.

[0055] Furthermore, the number of tooth-shaped protrusion periods of the first light diffuser 1 is N1, and the specific expression formula of N1 is:

[0056]

[0057] Accordingly, in one design of the second light diffuser, the sawtooth in the light-transmitting surface of the second light diffuser 4 includes a first sawtooth and a second sawtooth, and the specific expression formula of the hypotenuse angle of the first sawtooth and the second sawtooth is:

[0058]

[0059] Among them, θ0 is the inclination angle of the second light diffuser 4 relative to the ground, θ1 is the first sawtooth bevel angle of the light-transmitting surface structural unit of the second light diffuser 4, θ1′ is the second sawtooth bevel angle of the light-transmitting surface structural unit of the second light diffuser 4, θ2 is the first angle between the sunlight emitted from the light-transmitting surface of the second light diffuser 4 and the ground, θ2′ is the second angle between the sunlight emitted from the light-transmitting surface of the second light diffuser 4 and the ground, is the altitude angle between the sun's rays and the ground, n0 is the refractive index of the air, and n1 is the refractive index of the second diffuser plate 4. According to this set of equations, the hypotenuse angle θ1 of the sawtooth in the light-transmitting surface of the second diffuser plate 4 can be obtained, H is the installation height of the second diffuser plate 4, L2 is the length of the second diffuser plate 4, and the length of the photovoltaic panel 2 is the same as the length of the second diffuser plate 4.

[0060] Furthermore, the period number of the fine structure of the Fresnel lens of the second light diffuser 4 is N2, and the specific expression formula of N2 is:

[0061]

[0062] Among them, L2 is the length of the second light diffuser 4, θ0 is the inclination angle of the second light diffuser 4 relative to the ground, θ1 is the first sawtooth bevel angle of the light-transmitting surface structural unit of the second light diffuser 4, θ1′ is the second sawtooth bevel angle of the light-transmitting surface structural unit of the second light diffuser 4, and h2 is the groove depth of the light-transmitting surface structural unit of the second light diffuser 4.

[0063] In the specific arrangement of the first top plate unit, the first top plate unit includes three first light-diffusing plates 1 and first photovoltaic panels 2 and second photovoltaic panels 2 respectively located above the light-diffusing plates on both sides, and the second top plate unit includes three second light-diffusing plates 4 respectively arranged corresponding to the three first light-diffusing plates 1. The photovoltaic panels on both sides can be opened separately, further improving the convenience of adjusting the light in the greenhouse according to the environment.

[0064] In order to facilitate the opening and closing of the photovoltaic panels, in other specific implementations, the greenhouse of this embodiment also includes a linkage rod 3, one end of the photovoltaic panel 2 is rotatably mounted on the end of the first light-diffusing plate 1 corresponding to it through a rotating shaft, and the linkage rod 3 connects at least two photovoltaic panels 2 to drive the two to rotate simultaneously.

[0065] In one embodiment, the first photovoltaic panel 2 and the second photovoltaic panel 2 are rotatably mounted on the corresponding first light homogenizing plate 1 at both ends through a rotating shaft, and the linkage rod 3 connects the adjacent first photovoltaic panel 2 or the second photovoltaic panel 2 to drive the adjacent first photovoltaic panel 2 or the second photovoltaic panel 2 to rotate simultaneously.

[0066] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A photovoltaic glass greenhouse with uniform light transmission, characterized in that: include: A first top plate unit; The first top plate unit comprises a light homogenizing component and a photovoltaic component. The light homogenizing component comprises a plurality of first light homogenizing plates (1) arranged in sequence. The photovoltaic component comprises a plurality of photovoltaic panels (2). The photovoltaic panels (2) can be opened and installed above the first light homogenizing plates (1). The plurality of photovoltaic panels (2) are arranged at intervals on the plurality of first light homogenizing plates (1). The light receiving surface of the first light homogenizing plates (1) is a smooth plane and the light transmitting surface has a Fresnel lens fine structure formed by periodically arranged tooth-shaped protrusions. The first light homogenizing plates (1) are used to homogenize incident light to the bottom of the first light homogenizing plates (1) on both sides.

2. The photovoltaic glass greenhouse with uniform light transmission according to claim 1, characterized in that: It also comprises a linkage rod (3), one end of the photovoltaic panel (2) is rotatably mounted on one end of the first light homogenizing plate (1) corresponding to the photovoltaic panel (2) via a rotating shaft, and the linkage rod (3) connects at least two photovoltaic panels (2) to drive the two to rotate simultaneously.

3. The photovoltaic glass greenhouse with uniform light transmission according to claim 1, characterized in that: The first top plate unit is arranged horizontally, and the toothed structure on the lower surface of the first light diffuser (1) comprises first triangular tooth portions and second triangular tooth portions which are periodically and alternately distributed, and the adjacent first triangular tooth portions and second triangular tooth portions are arranged symmetrically, and the inclination angles of the two side surfaces of the first triangular tooth portions are calculated by the following formula: α1=θ2; Among them, θ2 and are the inclination angles between the normal planes of the two sides of the first triangular tooth portion and the vertical direction, α1 and β1 are the inclination angles between θ2 and , h is the installation height of the first light diffuser (1), l is the width of the first light diffuser (1) in the horizontal direction, and n1 is the number of cycles of the first light diffuser (1).

4. The photovoltaic glass greenhouse with uniform light transmission according to claim 1, characterized in that: It also includes a second top plate unit, the first top plate unit and the second top plate unit are arranged relatively tilted, the second top plate unit includes a plurality of second light homogenizing plates (4) arranged in sequence along the horizontal direction, the light receiving surface of the second light homogenizing plates (4) is a smooth plane and the light transmitting surface has a Fresnel lens fine structure formed by periodically arranged tooth-shaped protrusions, and is used to homogenize the incident light below the first light homogenizing plates (1) on both sides.

5. The photovoltaic glass greenhouse with uniform light transmission according to claim 4, characterized in that: The first top plate unit is arranged to be inclined toward the south and the second top plate unit is arranged to be inclined toward the north; The tooth-shaped protrusions on the light-transmitting surface of the first light diffuser (1) have an isosceles trapezoidal structure, the upper base width of the isosceles trapezoidal structure is half the lower base width, and the isosceles trapezoidal structure is calculated by the following equation: Wherein, α1 is the hypotenuse angle of the isosceles trapezoidal structure, a is the upper base width of the isosceles trapezoidal structure, n1 is the refractive index of the first light diffuser (1), n0 is the refractive index of air, L1 is the width of the first light diffuser (1), H1 is the installation height of the first light diffuser (1), h1 is the height of the isosceles trapezoidal structure, and k1 is the area ratio of the first light diffuser (1) to the photovoltaic panel (2).

6. The photovoltaic glass greenhouse with uniform light transmission according to claim 5, characterized in that: The number of tooth-shaped protrusion periods of the first light diffuser (1) is N1, and the specific expression formula of N1 is:

7. The photovoltaic glass greenhouse with uniform light transmission according to claim 5, characterized in that: The tooth-shaped protrusion of the second light diffuser (4) comprises a first sawtooth and a second sawtooth, and the specific expression formula of the hypotenuse angle of the first sawtooth and the second sawtooth is: Wherein, θ0 is the inclination angle of the second light diffuser (4) relative to the ground, θ1 is the first sawtooth bevel angle of the light-transmitting surface structural unit of the second light diffuser (4), θ1′ is the second sawtooth bevel angle of the light-transmitting surface structural unit of the second light diffuser (4), θ2 is the first angle between the sunlight emitted from the light-transmitting surface of the second light diffuser (4) and the ground, θ2′ is the second angle between the sunlight emitted from the light-transmitting surface of the second light diffuser (4) and the ground, is the altitude angle between the sunlight and the ground, n0 is the refractive index of the air, and n1 is the refractive index of the second light diffuser (4); according to this set of equations, the hypotenuse angle θ1 of the sawtooth in the light-transmitting surface of the second light diffuser (4) can be obtained, H is the installation height of the second light diffuser (4), L2 is the length of the second light diffuser (4), and the length of the photovoltaic panel (2) is the same as the length of the second light diffuser (4).

8. The photovoltaic glass greenhouse with uniform light transmission according to claim 7, characterized in that: The period number of the fine structure of the Fresnel lens of the second light homogenizing plate (4) is N2, and the specific expression formula of N2 is: Wherein, L2 is the length of the second light diffuser (4), θ0 is the inclination angle of the second light diffuser (4) relative to the ground, θ1 is the first sawtooth bevel angle of the light-transmitting surface structural unit of the second light diffuser (4), θ1′ is the second sawtooth bevel angle of the light-transmitting surface structural unit of the second light diffuser (4), and h2 is the groove depth of the light-transmitting surface structural unit of the second light diffuser (4).

9. The photovoltaic glass greenhouse with uniform light transmission according to claim 5, characterized in that: The first top plate unit comprises three first light diffusers (1) and a first photovoltaic panel (2) and a second photovoltaic panel (2) respectively located above the light diffusers on both sides, and the second top plate unit comprises three second light diffusers (4) respectively arranged corresponding to the three first light diffusers (1).

10. The photovoltaic glass greenhouse with uniform light transmission according to claim 9, characterized in that: It also includes a linkage rod (3), wherein both ends of the first photovoltaic panel (2) and the second photovoltaic panel (2) are rotatably mounted on the corresponding first light homogenizing plate (1) via a rotating shaft, and the linkage rod (3) is connected to the adjacent first photovoltaic panel (2) or the second photovoltaic panel (2) to drive the adjacent first photovoltaic panel (2) or the second photovoltaic panel (2) to rotate simultaneously.

Images