Punching refraction device
By installing perforated refractive devices between photovoltaic modules, the problem of reduced production caused by shading of photovoltaic modules was solved, achieving efficient transformation of photovoltaic power plants, reducing costs and improving wind resistance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUONENG LIQUAN NEW ENERGY CO LTD
- Filing Date
- 2025-06-11
- Publication Date
- 2026-05-19
AI Technical Summary
The shading effect of photovoltaic modules in existing photovoltaic power plants leads to reduced yields in farmland, woodland, or grassland, and the cost of replacing the translucent panels or films is high, making it difficult to achieve cheap retrofitting.
Design a perforated refraction device that uses through holes and grooves in the refraction device between photovoltaic modules to achieve sunlight refraction and transmission, eliminate light radiation loss, and enhance wind resistance.
It improves the ground sunlight transmittance under photovoltaic modules, promotes plant growth, reduces wind resistance, increases wind resistance, and reduces retrofit costs.
Smart Images
Figure CN224264937U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of photovoltaic equipment technology, specifically to a perforated refraction device. Background Technology
[0002] Currently, most photovoltaic power plants installed on farmland, woodlands, or grasslands are fixedly installed with an angle facing south in order to increase power generation and reduce costs. This creates long-term shade on the ground under the photovoltaic modules, causing significant reductions or even complete crop failures for sun-loving crops such as grains, trees, and pasture.
[0003] However, dismantling existing photovoltaic power plants or replacing some photovoltaic modules with translucent panels or films to transform them into photovoltaic power plants without long-term shading would be very costly, and almost all photovoltaic power plants would suffer serious losses. Therefore, a cost-effective renovation solution is needed.
[0004] The design of this application aims to solve this problem by refracting some of the sunlight from the unblocked direct sunlight on the ground between two rows of photovoltaic modules onto the ground where the direct sunlight is blocked by the photovoltaic modules. Utility Model Content
[0005] Therefore, this utility model provides a perforated refraction device 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 perforated refraction device is provided, wherein the perforated refraction device has a through hole, and the lower surface of the perforated refraction device has a groove structure, wherein at least one groove extends along the longitudinal direction of the perforated refraction device.
[0006] Furthermore, the groove is a wavy, arc-shaped groove.
[0007] Furthermore, the groove is a serrated groove.
[0008] Furthermore, the cross-section of the serrated groove is triangular.
[0009] Furthermore, the through holes are evenly arranged.
[0010] Furthermore, the total area of all through holes is equal to the product of the solar transmittance of the perforated refractive device material and the proportion of the land area not shaded by the photovoltaic panel to the total land area.
[0011] Furthermore, the through hole can be a round hole or a polygonal hole.
[0012] Furthermore, the distance between the edges of adjacent through holes is less than 30 mm.
[0013] Furthermore, the end of the through hole is connected to the groove.
[0014] Furthermore, the outer contour of the perforated refractive device is rectangular.
[0015] This invention has the following advantages: The perforated refraction device allows sunlight to pass directly through the holes, illuminating the ground not shaded by the photovoltaic modules, thus eliminating the loss of light radiation when sunlight passes through the refraction film; the holes also allow rainwater to pass through, helping to distribute rainwater evenly on the ground; and the holes also allow wind to pass through, reducing wind resistance and significantly increasing the wind resistance of the device. Attached Figure Description
[0016] Figure 1 This is a top view of a perforated refraction device provided for some embodiments of the present invention.
[0017] Figure 2 This is a cross-sectional view of a first type of embodiment of a perforated refraction device provided for some embodiments of the present invention.
[0018] Figure 3 This is a cross-sectional view of a second type of embodiment of a perforated refraction device provided for some embodiments of the present invention.
[0019] Figure 4 This invention provides some embodiments of a perforated refractive device for modifying an existing fixed-surface, south-sloping agricultural photovoltaic power plant.
[0020] Figure 5 This invention provides some embodiments of a perforated refractive device for modifying an existing fixed-surface, south-sloping agricultural photovoltaic power plant.
[0021] Figure 6 The image shows a front view of an array of perforated refractive film forming a two-dimensional transmission and scattering combination combined with a photovoltaic module, according to some embodiments of this utility model.
[0022] Figure 7 The image shows a top view of an array of perforated refractive film forming a two-dimensional transmission and scattering combination combined with a photovoltaic module, according to some embodiments of this utility model.
[0023] Figure 8 The perforated refractive film of the perforated refractive device provided in some embodiments of this utility model for supplementing light to the shaded area of a photovoltaic module is installed on a one-dimensional tracking photovoltaic module array.
[0024] In the diagram, 1 is a perforated refraction device, 2 is a through hole, 3 is a groove, and 4 is a photovoltaic panel. Detailed Implementation
[0025] 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.
[0026] Example 1
[0027] like Figures 1 to 3 As shown, in the first aspect embodiment of the present invention, a perforated refraction device 1 is provided with a through hole 2, and the lower surface of the perforated refraction device 1 is a groove 3 structure, with at least one groove 3 extending along the longitudinal direction of the perforated refraction device 1.
[0028] It should be noted that the perforated refractive device in this application refers to a perforated refractive plate or film.
[0029] The technical effects achieved by the above embodiments are as follows: the holes drilled in the perforated refraction device 1 allow sunlight to pass through directly and shine on the ground that is not shaded by the photovoltaic modules, thus eliminating the loss of light radiation when the sunlight passes through the refraction film; the holes in the perforated refraction device 1 allow rainwater to pass through, which helps to distribute the rainwater evenly on the ground; the holes in the perforated refraction device 1 allow wind to pass through, so that when it is windy, the wind can pass through the perforated refraction device 1, thereby reducing the wind resistance of the perforated refraction device 1 and greatly increasing the wind resistance of the perforated refraction device 1.
[0030] Example 2
[0031] like Figures 1 to 3 As shown, a perforated refraction device includes all the contents of Embodiment 1, except that the groove 3 is a wavy arc-shaped groove.
[0032] The technical effect achieved by the above embodiments is that, as needed, the refractive surface on the refractive plate or film can be one-dimensional bidirectional refractive. By drilling holes in the unidirectional or bidirectional refractive plate or film, sunlight passing through the refractive plate or film is refracted and transmitted to the ground shaded by the photovoltaic module.
[0033] Example 3
[0034] like Figures 1 to 3 As shown, a perforated refraction device includes all the contents of Embodiment 2, except that the groove 3 is a serrated groove.
[0035] Optionally, the cross-section of the serrated groove is triangular.
[0036] The technical effect achieved by the above embodiments is that, as needed, the refractive surface on the refractive plate or film can be one-dimensional unidirectional refraction, and the sunlight passing through the refractive plate or film is refracted and transmitted to the ground shaded by the photovoltaic module.
[0037] Example 4
[0038] like Figures 1 to 3 As shown, a perforated refraction device includes all the contents of Embodiment 3. In addition, the through holes 2 are evenly arranged. By arranging them evenly, the standardization of the arrangement of the through holes 2 is increased, and the processing cost is reduced.
[0039] Optionally, the ratio of the total area of all through holes 2 to the area of the perforated refractive device 1 is equal to the product of the sunlight transmittance of the material of the perforated refractive device 1 and the ratio of the land area not shaded by the photovoltaic panel to the total land area.
[0040] Optionally, the through hole 2 can be a round hole or a polygonal hole. In addition, the outline of the through hole 2 can be set to any shape other than the above shapes according to actual needs.
[0041] The technical effect achieved by the above embodiment is that the proportion of the area of the holes on the perforated refraction device 1 is directly proportional to the proportion of the ground not shaded by the photovoltaic modules. For example, in the season when the ground plants need sunlight, the proportion of the ground not shaded by the photovoltaic modules is about 50%, and the proportion of the area of the holes on the perforated refraction device 1 is about less than 50%. This is because direct light passing through the holes has no light transmission loss, while refracted light suffers light radiation loss due to passing through the refraction plate or film.
[0042] Example 5
[0043] like Figures 1 to 3 As shown, a perforated refraction device includes all the contents of Embodiment 4, except that the distance between the edges of adjacent through holes 2 is less than 30 mm.
[0044] Optionally, the end of the through hole 2 is connected to the groove 3.
[0045] Optionally, the outer contour of the perforated refraction device 1 is rectangular, which facilitates manufacturing and processing. In addition, ropes can be installed between the photovoltaic panels 4 to fix the perforated refraction device 1.
[0046] The technical effect achieved by the above embodiment is that the distance between the holes in the perforated refraction device 1 must take into account the angle of sunlight. The maximum angular difference between the rays formed by the sun's surface area, i.e., the angle of sunlight, is approximately 32', or approximately 0.53°. When the distance from the top of the plant is 2.5 meters, the width of the shadow on the ground is approximately 22 millimeters. Therefore, it is recommended that the distance between the edges of the holes be less than 30 millimeters in this case to prevent the area of direct sunlight passing through the holes from being completely blocked from the ground.
[0047] Specific application scenarios
[0048] As Figure 4 shown, it is a schematic diagram of using the punching refraction device 1 to transform an existing agricultural-light complementary photovoltaic power generation field with a fixed surface inclined southward. In the figure, the photovoltaic panel 4 is inclined and fixed on the ground through a support rod. The two ends of the punching refraction device 1 are respectively connected to the highest point of the photovoltaic panel 4 and the lowest point of the adjacent photovoltaic panel 4.
[0049] As Figure 5 shown, it is a schematic diagram of using the punching refraction device 1 to transform an existing agricultural-light complementary photovoltaic power generation field with a fixed surface inclined southward. In the figure, the photovoltaic panel 4 is inclined and fixed on the ground through a support rod. The two ends of the punching refraction device 1 are respectively connected to the support rods of the adjacent photovoltaic panels 4.
[0050] As Figure 6 and Figure 7 shown, it is a schematic diagram of forming an array by combining a two-dimensional transmission and scattering combination with photovoltaic modules using the punching refraction device 1. In the figure, the photovoltaic panel 4 and the punching refraction device 1 intersect to form the first side roof, and the punching refraction device 1 is longitudinally arranged to form the second side roof. The first side roof and the second side roof are alternately distributed in a "human" shape.
[0051] As Figure 8 shown, the punching refraction device 1 for supplementing light to the shaded area of the photovoltaic module is installed on a one-dimensional tracking photovoltaic module array. The photovoltaic panel 4 and the punching refraction device 1 are alternately distributed in the horizontal direction. The refraction angle of the punching refraction device 1 and the width ratio of the photovoltaic panel 4 to the scattering plate can be set as needed. The punching refraction device 1 and the photovoltaic panel 4 are arranged at intervals to scatter sunlight accurately and evenly on the ground shaded by the photovoltaic module to meet the photosynthesis needs of ground plants.
[0052] In the description of the present invention, 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. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.
[0053] 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.
[0054] 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.
[0055] 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.
[0056] 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.
[0057] 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.
[0058] 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 perforated refractive device, characterized in that, The perforated refraction device (1) has a through hole (2), and the lower surface of the perforated refraction device (1) has a groove (3) structure, with at least one groove (3) extending along the longitudinal direction of the perforated refraction device (1).
2. The perforated refractive device according to claim 1, characterized in that, The groove (3) is a wavy arc-shaped groove.
3. The perforated refractive device according to claim 1, characterized in that, The groove (3) is a serrated groove.
4. The perforated refraction device according to claim 3, characterized in that, The cross-section of the serrated groove is triangular.
5. The perforated refractive device according to claim 1, characterized in that, The through holes (2) are evenly arranged.
6. The perforated refractive device according to claim 1, characterized in that, The ratio of the total area of all through holes (2) to the area of the perforated refractive device (1) is equal to the product of the solar transmittance of the perforated refractive device (1) material and the ratio of the land area not shaded by the photovoltaic panel to the total land area.
7. The perforated refraction device according to claim 1, characterized in that, The through hole (2) is a round hole or a polygonal hole.
8. The perforated refractive device according to claim 1, characterized in that, The distance between the edges of adjacent through holes (2) is less than 30 mm.
9. The perforated refractive device according to claim 1, characterized in that, The end of the through hole (2) is connected to the groove (3).
10. The perforated refractive device according to claim 1, characterized in that, The outer contour of the perforated refractive device (1) is rectangular.