Agricultural greenhouse photovoltaic roof

Abstract

The utility model discloses a kind of agricultural greenhouse photovoltaic roof, which is formed by photovoltaic panel units and transrefraction plates or films horizontally staggered connection in "herringbone" type, and the photovoltaic panel units are formed by photovoltaic panels and transrefraction connecting plates staggered connection;The inner surface of the transrefraction plate and the transrefraction connecting plate is respectively provided with an inner arc longitudinal groove and a horizontal groove.The sunlight is refracted from two mutually perpendicular directions of the two transrefraction plates or films, and the angle of the sunlight received by all leaf surfaces of the plants is more uniform than when receiving unobstructed direct sunlight, the minimum intensity of the received sunlight radiation is improved, and thus the photosynthesis is better.All the ground-received sunlight is relatively uniform, and thus the photosynthesis is good.The closer to the winter solstice, the more direct sunlight that passes through the transrefraction connecting plate and shines on the ground.The closer to the summer solstice, the more direct sunlight that passes through the transrefraction plate and shines on the ground.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic equipment technology, specifically to a photovoltaic roof panel for agricultural greenhouses. Background Technology

[0002] The light saturation point of wheat is 20,000-30,000 lux, while that of rice, apple trees, jujube trees, tea trees, citrus trees, and banana trees is 30,000-50,000 lux, and that of corn is even around 50,000 lux.

[0003] Current photovoltaic systems with east-west facing single-axis rotating tracking and reflective panels cannot meet the light requirements of plants with a light saturation point above 30,000 lux. Sunlight, weakened by the refracted light from the photovoltaic modules and reflective panels, only reaches 40,000 lux at midday on sunny spring, summer, and autumn days. Meanwhile, the unshaded sunlight hitting the ground is too intense, wasting sunlight and causing midday dormancy in plants. Therefore, these systems have limitations.

[0004] Considered application scenarios: The goal is to provide a certain amount of solar radiation to the ground during winter, and to provide stronger solar radiation during spring, summer, and autumn. This is to meet the following requirements:

[0005] The need to grow two crops of food per year. For example, planting one season of winter wheat and one season of summer corn. The need to grow fruit trees.

[0006] Therefore, a design is needed for photovoltaic modules and reflective panels or films to distribute direct sunlight as evenly as possible across the ground throughout the year. On clear midday days in spring, summer, and autumn, the minimum illuminance on all ground surfaces should be above 50,000 lux. Furthermore, this design must be implemented at the lowest possible cost.

[0007] The purpose of this application is to maximize the minimum illuminance reaching the ground when photovoltaic modules are installed. However, in areas with no shade, the sunlight is very intense, not only wasting this amount of solar radiation but also causing plants to go dormant during the midday hours when the sun is strongest. Utility Model Content

[0008] Therefore, this utility model provides a photovoltaic roof panel for agricultural greenhouses to solve the above-mentioned problems in the prior art. To achieve the above objective, this utility model provides the following technical solution: According to a first aspect of this utility model, a photovoltaic roof panel for agricultural greenhouses is provided, wherein the photovoltaic roof panel is formed by horizontally interlaced photovoltaic panel units and translucent refraction plates, and the photovoltaic panel unit is formed by interlaced photovoltaic panels and translucent refraction connecting plates; the inner surfaces of the translucent refraction plates and the translucent refraction connecting plates are respectively provided with inner arc-shaped longitudinal grooves and transverse grooves.

[0009] Furthermore, the refractive connecting plate has at least one through hole.

[0010] Furthermore, the through holes on the transmission and refraction connecting plate are round holes or polygonal holes.

[0011] Furthermore, the refracting plate has at least one through hole.

[0012] Furthermore, the through holes on the refracting plate are either round or polygonal.

[0013] Furthermore, the angle between the photovoltaic panel unit and the transmissive plate can be any one of an obtuse angle, a right angle, or an acute angle.

[0014] Furthermore, it also includes support columns, with the lower edge of the photovoltaic panel unit and the lower edge of the translucent plate both mounted on the ground via support columns.

[0015] Furthermore, the length and width of the photovoltaic panel unit and the length and width of the transmissive plate are either equal or unequal.

[0016] Furthermore, the length direction of the refractive connecting plate is perpendicular to the length direction of the refractive plate.

[0017] This invention has the following advantages: With the photovoltaic roof panel for agricultural greenhouses of this invention, sunlight is refracted from two sets of translucent plates or films in two mutually perpendicular directions. The angle of sunlight received by all plant leaves is more uniform than when receiving unobstructed direct sunlight, and the minimum intensity of received solar radiation is increased, thus improving photosynthesis. Sunlight received by the entire ground surface is more uniform, resulting in better photosynthesis. The closer to the winter solstice, the more direct sunlight reaches the ground through the translucent plates. The closer to the summer solstice, the more direct sunlight reaches the ground through the translucent plates. Attached Figure Description

[0018] Figure 1 This is a top view of a photovoltaic roof panel for an agricultural greenhouse, provided for some embodiments of the present invention.

[0019] Figure 2 This is a front view of a photovoltaic roof panel for an agricultural greenhouse, provided for some embodiments of the present invention.

[0020] Figure 3 This is a schematic diagram illustrating the working principle of a photovoltaic roof panel for agricultural greenhouses, provided for some embodiments of this utility model.

[0021] Figure 4 This is a schematic diagram illustrating the sunlight refraction principle of a light-transmitting connecting plate for a photovoltaic roof panel in an agricultural greenhouse, provided for some embodiments of this utility model.

[0022] In the diagram, a is a photovoltaic panel unit, 1 is a photovoltaic panel, 2 is a transmission and refraction connection plate, 3 is a transmission and refraction plate, 4 is direct light, and 5 is refracted light. Detailed Implementation

[0023] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] Example 1

[0025] like Figures 1 to 3 As shown, in the first aspect embodiment of this utility model, there is an agricultural greenhouse photovoltaic roof panel. The assembly includes a photovoltaic module 1. The photovoltaic roof panel is formed by horizontally "V"-shaped interlacing of photovoltaic panel unit a and translucent refraction plate 3. The photovoltaic panel unit is formed by interlacing photovoltaic panel 1 and translucent refraction connecting plate 2. The inner surfaces of translucent refraction plate 3 and translucent refraction connecting plate 2 are respectively provided with inner arc-shaped longitudinal groove and transverse groove.

[0026] In the above embodiments, it should be noted that, when using, as... Figure 3 As shown, the light extending vertically is direct light 4, and the light illuminating at an angle is refracted light 5.

[0027] Figure 4 This is a schematic diagram illustrating the sunlight refraction principle of a light-transmitting connecting plate for a photovoltaic roof panel in an agricultural greenhouse, provided for some embodiments of this application.

[0028] The array shown, combining photovoltaic modules with transmissive panels or films, is suitable for farmland that needs sunlight in winter but requires even more sunlight in spring, summer, and autumn. Examples include farmland that grows both winter wheat and summer crops.

[0029] Using this patented technology to install photovoltaic modules, under meteorological conditions with solar radiation intensity of 60,000-100,000 lux, the solar radiation intensity transmitted through the translucent panels or films, which are installed in an east-west orientation and tilted towards the south, delivers approximately 20,000-30,000 lux to the ground surface. Meanwhile, the sunlight transmitted through the translucent panels / films, which are installed tilted towards the north, further distributes approximately 10,000-20,000 lux of solar radiation intensity to the south side, varying slightly depending on the angle of sunlight, to the ground area shaded by the photovoltaic modules and the translucent panels or films. Thus, the total solar radiation intensity on the ground surface is 30,000-50,000 lux. This satisfies the light intensity requirements for plant growth with a high light saturation point.

[0030] The technical effects achieved by the above embodiments are as follows: Through the agricultural greenhouse photovoltaic roof panel of this embodiment, sunlight is refracted from two mutually perpendicular directions by two sets of transflective plates or films. The angle of sunlight received by all leaf surfaces of the plants is more uniform than when receiving unobstructed direct sunlight, and the minimum intensity of received solar radiation is increased, thus resulting in better photosynthesis. Sunlight received by the entire ground surface is more uniform, thus promoting better photosynthesis. The closer to the winter solstice, the more direct sunlight shines on the ground through the transflective connecting plates. The closer to the summer solstice, the more direct sunlight shines on the ground through the transflective plates.

[0031] Example 2

[0032] like Figures 1 to 3 As shown, an agricultural greenhouse photovoltaic roof panel includes all the contents of Embodiment 1. The translucent connecting plate 2 has at least one through hole, where at least one through hole refers to one or more through holes.

[0033] Optionally, the through holes on the translucent connecting plate 2 can be round holes or polygonal holes.

[0034] If rain protection is not required, use a perforated translucent plate or membrane. If rain protection is required, use a non-perforated translucent plate or membrane.

[0035] The technical effects achieved by the above embodiments are as follows: by setting at least one inner arc-shaped groove, it is beneficial to the even distribution of direct sunlight on the ground; by setting through holes, it is beneficial to the passage of wind and rainwater; by setting through holes as round holes or polygonal holes, the standardization of processing is improved and the processing cost is significantly reduced.

[0036] Example 3

[0037] like Figures 1 to 3 As shown, an agricultural greenhouse photovoltaic roof panel includes all the contents of Embodiment 2. In addition, the translucent plate 3 has at least one through hole, where at least one through hole refers to one or more through holes.

[0038] Optionally, the through holes on the translucent plate 3 can be round or polygonal.

[0039] If rain protection is not required, use a perforated translucent plate or membrane. If rain protection is required, use a non-perforated translucent plate or membrane.

[0040] The technical effects achieved by the above embodiments are as follows: by setting at least one inner arc-shaped groove, it is beneficial to the even distribution of direct sunlight on the ground; by setting through holes, it is beneficial to the passage of wind and rainwater; by setting through holes as round holes or polygonal holes, the standardization of processing is improved and the processing cost is significantly reduced.

[0041] Example 4

[0042] like Figures 1 to 3 As shown, an agricultural greenhouse photovoltaic roof panel includes all the contents of Example 3, except that the included angle between the photovoltaic panel unit a and the transmissive plate 3 is any one of an obtuse angle, a right angle, or an acute angle.

[0043] Optionally, it also includes support columns, and the lower edge of photovoltaic panel unit a and the lower edge of the translucent plate 3 are both installed on the ground via support columns.

[0044] The technical effect achieved by the above embodiments is that by setting support columns, the support strength of photovoltaic panel unit a and transmissive plate 3 is improved.

[0045] Example 5

[0046] like Figures 1 to 3 As shown, an agricultural greenhouse photovoltaic roof panel includes all the contents of Example 4. Except that the length and width of the photovoltaic panel unit a and the length and width of the translucent plate 3 are equal or unequal.

[0047] Optionally, the length direction of the translucent and refractive connecting plate 2 is perpendicular to the length direction of the translucent and refractive plate 3.

[0048] The technical effect achieved by the above embodiments is that the processing cost of the device is significantly reduced through the above settings.

[0049] In the description of this utility model, it should be understood that the terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0050] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0051] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0052] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0053] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

[0054] In the description of this specification, the references to terms such as "Embodiment 1," "Embodiment 2," "Example," "Specific Example," or "Some Examples," etc., indicate that the specific method, apparatus, or feature described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, methods, apparatus, or features described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0055] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A photovoltaic roof panel for agricultural greenhouses, characterized in that, The photovoltaic roof panel is formed by horizontally "V"-shaped interlocking of photovoltaic panel unit (a) and translucent refraction plate (3). The photovoltaic panel unit is formed by interlocking photovoltaic panel (1) and translucent refraction connecting plate (2). The inner surfaces of translucent refraction plate (3) and translucent refraction connecting plate (2) are respectively provided with inner arc-shaped longitudinal groove and transverse groove.

2. The agricultural greenhouse photovoltaic roof panel according to claim 1, characterized in that, The refractive connecting plate (2) has at least one through hole.

3. The agricultural greenhouse photovoltaic roof panel according to claim 2, characterized in that, The through holes on the refractive connecting plate (2) are round holes or polygonal holes.

4. The agricultural greenhouse photovoltaic roof panel according to claim 3, characterized in that, The refracting plate (3) has at least one through hole.

5. The agricultural greenhouse photovoltaic roof panel according to claim 4, characterized in that, The through holes on the refracting plate (3) are round holes or polygonal holes.

6. The agricultural greenhouse photovoltaic roof panel according to claim 1, characterized in that, The angle between the photovoltaic panel unit (a) and the transmissive plate (3) is any one of obtuse angle, right angle or acute angle.

7. The agricultural greenhouse photovoltaic roof panel according to claim 1, characterized in that, It also includes support columns, and the lower edge of the photovoltaic panel unit (a) and the lower edge of the transmissive plate (3) are both installed on the ground via support columns.

8. The agricultural greenhouse photovoltaic roof panel according to claim 1, characterized in that, The length and width of the photovoltaic panel unit (a) and the length and width of the transmissive plate (3) are either equal or unequal.

9. The agricultural greenhouse photovoltaic roof panel according to claim 1, characterized in that, The length direction of the translucent and refractive connecting plate (2) is perpendicular to the length direction of the translucent and refractive plate (3).

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