A photovoltaic power generation system

Abstract

The application discloses a photovoltaic power generation system and relates to the photovoltaic power generation field.The device comprises a plurality of photovoltaic component module units and a plurality of fixed counterweight blocks; wherein the photovoltaic component module unit comprises a wedge-shaped groove and a connecting frame.The photovoltaic component is fixed to the notch position at the bottom of the wedge-shaped groove, the photovoltaic component module units are fixedly connected through the connecting frames, the photovoltaic component arrangement is formed, a fixed counterweight block is arranged between two adjacent photovoltaic component module units, and the photovoltaic component arrangement is pressed above the lower platform through the fixed counterweight block.The structure of the device simplifies the photovoltaic system component, reduces the installation workload, and improves the power generation efficiency.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic power generation technology, and in particular to a photovoltaic power generation system. Background Technology

[0002] Against the backdrop of dwindling national non-renewable resources and escalating energy security and environmental pollution, distributed renewable energy has become a crucial part of my country's energy strategy. It is an effective way to alleviate the country's severe power shortage and ensure the implementation of its sustainable development strategy, and it possesses enormous development potential. Photovoltaic power generation, as a type of distributed renewable energy, currently has a wide range of applications.

[0003] Solar photovoltaic power generation systems are power generation systems that directly convert solar radiation energy into electrical energy. Currently, photovoltaic modules are generally installed using metal brackets, and also require components such as columns, beams, and connectors to fix and connect the photovoltaic modules. Most of these components are made of rigid metal, which not only increases the workload of on-site installation but also greatly increases the transportation costs of each component. Summary of the Invention

[0004] In view of the above problems, the present invention is proposed to provide a photovoltaic power generation system that overcomes or at least partially solves the above problems.

[0005] This invention provides a photovoltaic power generation system, the device comprising:

[0006] Several photovoltaic module units and several fixed counterweights;

[0007] The photovoltaic module unit includes:

[0008] The wedge-shaped groove has a slope, and the groove opening faces the lower platform. The bottom of the wedge-shaped groove has an upward-facing notch, which mates with the photovoltaic module.

[0009] A connecting frame, enclosing the wedge-shaped groove opening, is used to fix and connect each of the component module units;

[0010] The photovoltaic module is fixed at the notch position at the bottom of the wedge-shaped groove, and the photovoltaic module unit is fixedly connected by each of the connecting frames to form a photovoltaic module arrangement. A fixed counterweight is placed between two adjacent photovoltaic module units, and the photovoltaic module arrangement is pressed onto the lower platform by the fixed counterweight.

[0011] Preferably, the photovoltaic module unit is made of plastic.

[0012] Preferably, the bottom of the wedge-shaped groove is provided with a plurality of slots and an insertion port that penetrates the notch;

[0013] The slots are evenly distributed within the recesses at the bottom of the wedge-shaped groove;

[0014] The socket is matched with the junction box of the photovoltaic module.

[0015] Preferably, a plurality of first drainage outlets are provided on the side of the notch opening near the bottom of the wedge-shaped groove.

[0016] Preferably, the groove wall of the wedge-shaped groove is provided with a plurality of ventilation holes.

[0017] Preferably, the connecting frame is provided with several second drainage outlets at the ends near the bottom and top of the wedge-shaped groove.

[0018] Preferably, the notch is provided with several locking blocks around its opening.

[0019] Preferably, the connecting frame has overlapping portions on both opposite sides, and the overlapping portions of two adjacent photovoltaic module units cooperate with each other.

[0020] Preferably, the overlapping portion is provided with screw holes.

[0021] Preferably, the inner wall of the wedge-shaped groove is provided with reinforcing ribs.

[0022] In this invention, the wedge-shaped groove's opening faces the lower platform, and its bottom has an upward-opening recess into which the photovoltaic module is embedded. A connecting frame surrounds the opening of the wedge-shaped groove, forming a photovoltaic module unit. The connecting frame fixes adjacent photovoltaic module units together to form a photovoltaic module arrangement. A fixed counterweight is placed between adjacent photovoltaic module units in the arrangement. The photovoltaic module is embedded in the recess, and the recess opening is higher than the photovoltaic module, thus restricting its movement. The wedge-shaped groove has a slope, increasing the amount of solar irradiance absorbed by the photovoltaic module, thereby increasing electricity generation and improving the efficiency of the photovoltaic system. Simultaneously, it effectively drains rainwater from the photovoltaic module surface and removes dirt, providing a self-cleaning function. The slope angle A formed by the bottom and top of the wedge-shaped groove is small. Due to the small slope angle, the wind load coefficient is small, resulting in a smaller wind load on the photovoltaic module arrangement. Therefore, placing a sufficiently heavy fixed counterweight between adjacent photovoltaic module units in the arrangement effectively secures the photovoltaic module arrangement.

[0023] Because the device of this invention adopts an overall closed type, and the installation of photovoltaic modules maintains the original shape of the installation surface well, the overall structure does not add extra wind load. Furthermore, because the slope angle of the device is small, the effect of wind load is reduced. The device simplifies the photovoltaic system components, reduces the workload of installation, and improves power generation efficiency by placing fixed counterweights.

[0024] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and in order to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0025] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings.

[0026] In the attached diagram:

[0027] Figure 1 This is a diagram of a photovoltaic module arrangement and fixing structure provided in an embodiment of the present invention;

[0028] Figure 2 yes Figure 1 The structural diagram of the photovoltaic module unit in the image;

[0029] Figure 3 yes Figure 1 Exploded view of photovoltaic module unit and photovoltaic module;

[0030] Figure 4 yes Figure 1 A top view of the photovoltaic modules fixed to the photovoltaic module unit;

[0031] Figure 5 yes Figure 1 The photovoltaic module is fixed in the main view of the photovoltaic module unit;

[0032] Figure 6 yes Figure 1 The left view of the photovoltaic module unit in which the photovoltaic module is fixed;

[0033] Figure 7 yes Figure 1 A structural diagram showing the photovoltaic modules fixed to the photovoltaic module unit.

[0034] Figure 8 This is a top view of a photovoltaic module unit provided in an embodiment of the present invention;

[0035] Figure 9 This is a front view of a photovoltaic module unit provided in an embodiment of the present invention;

[0036] Figure 10 This is a diagram showing the overlapping structure of two adjacent photovoltaic module units provided in an embodiment of the present invention;

[0037] Figure 11 This is a layout diagram of a photovoltaic module arrangement provided in an embodiment of the present invention;

[0038] Figure 12 This is another arrangement diagram of photovoltaic modules provided in an embodiment of the present invention;

[0039] Figure 13 This is a diagram showing the stacked arrangement of photovoltaic module units provided in an embodiment of the present invention;

[0040] Figure 14 This is another photovoltaic module arrangement and fixing structure diagram provided in the embodiment of the present invention. Attached image description:

[0042] 1. Photovoltaic module unit; 11. Wedge-shaped groove; 111. Notch; 111a. First drain outlet; 111b. Locking block; 112. Slot; 113. Insertion port; 114. Ventilation hole; 12. Connecting frame; 121. Second drain outlet; 122. Overlapping part; 122a. Screw hole; 2. Fixed counterweight block; 3. Photovoltaic module. Detailed Implementation

[0043] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0044] Reference Figure 1-14 This illustration shows a photovoltaic power generation system provided by an embodiment of the present invention, the device comprising:

[0045] Several photovoltaic module units 1 and several fixed counterweights 2;

[0046] The photovoltaic module unit 1 includes:

[0047] The wedge-shaped groove 11 has a slope, and the groove opening of the wedge-shaped groove 11 is placed facing the lower platform. The bottom of the wedge-shaped groove 11 is provided with an upward-facing notch 111, and the notch 111 cooperates with the photovoltaic module 3.

[0048] The connecting frame 12 surrounds the opening of the wedge-shaped groove 11 and is used to fix and connect each of the component module units 1.

[0049] The photovoltaic module 3 is fixed at the notch 111 at the bottom of the wedge-shaped groove 11, and the photovoltaic module unit 1 is fixedly connected by each of the connecting frames 12 to form a photovoltaic module arrangement. A fixed counterweight 2 is placed between two adjacent photovoltaic module units 1, and the photovoltaic module arrangement is pressed onto the lower platform by the fixed counterweight 2.

[0050] In this embodiment of the invention, the wedge-shaped groove 11 has the same width at its top and bottom, and its opening faces the lower platform. The bottom of the groove has an upward-opening recess 111, into which the photovoltaic module 3 is embedded. A connecting frame 12 surrounds the opening of the wedge-shaped groove 11, forming a photovoltaic module unit 1. (Refer to...) Figure 1 The diagram shows a connecting frame 12 that securely connects two adjacent photovoltaic module units 1 to form a photovoltaic module arrangement. A fixed counterweight 2 is placed between two adjacent photovoltaic module units 1 in the arrangement. The photovoltaic module 3 is embedded in a recess 111, with the opening of the recess 111 higher than the photovoltaic module 3, thus restricting the movement of the photovoltaic module 3. The wedge-shaped groove 11 has a slope, increasing the amount of solar irradiance absorbed by the photovoltaic module 3, thereby increasing the generation of electricity and improving the working efficiency of the photovoltaic system. At the same time, it promptly drains rainwater from the surface of the photovoltaic module 3 and removes dirt from the surface of the photovoltaic module 3, giving it a self-cleaning function.

[0051] Reference Figure 6 The diagram shows a small slope angle A formed by the bottom and top of the wedge-shaped groove 11. According to the wind load calculation formula, since the slope angle is small, the wind load shape coefficient is small, and therefore the wind load on the photovoltaic module arrangement is also small. Therefore, placing a sufficiently heavy fixed counterweight 2 between two adjacent photovoltaic module units 1 in the photovoltaic module arrangement can achieve the fixation of the photovoltaic module arrangement. The fixed counterweight 2 can have various shapes, such as cylindrical or polygonal. The placement of the fixed counterweight 2 is only one embodiment of the invention and should not be construed as a limitation on its placement. The weight of the fixed counterweight 2 should be selected according to the actual situation. Two adjacent photovoltaic module units 1 can also be fixedly connected to the lower platform by bolts, such as anchor bolts and expansion bolts.

[0052] A photovoltaic (PV) module array is formed by arranging several PV modules, wherein the tops of PV module units 1 in the array are aligned. PV module arrays can be distributed in various forms; for example, in the Northern Hemisphere, [refer to...]. Figure 11This illustrates that photovoltaic module units 1 in a photovoltaic module array are arranged in the same direction, with their tops facing south; (Refer to...) Figure 12 The diagram illustrates that two sets of photovoltaic modules can also be arranged with their slope tops facing each other, creating a streamlined structure that reduces wind load, and are oriented east-west. The spacing between the rows in both arrangements can be adjusted according to actual needs. Both arrangements increase the amount of solar irradiance absorbed by the photovoltaic modules 3, thereby increasing the amount of electricity generated and improving the efficiency of the photovoltaic system.

[0053] Because the device of this invention adopts an overall closed type, and the installation of photovoltaic modules maintains the original shape of the installation surface well, the overall structure does not add extra wind load. Furthermore, because the slope angle of the device is small, the effect of wind load is reduced. The photovoltaic modules are arranged and fixed by placing fixed counterweights 2. This device simplifies the photovoltaic system components, reduces the workload of installation, and improves power generation efficiency.

[0054] Furthermore, the photovoltaic module unit 1 is made of plastic.

[0055] In this embodiment of the invention, a plastic polymer is used to prepare an integrally molded plastic photovoltaic module unit 1 through injection molding. (Refer to...) Figure 13 The diagram shows that photovoltaic module unit 1 can be stacked. The material has good weather resistance, UV resistance, and good processing performance. In addition, the material has low density and light weight, making transportation and installation more convenient and efficient, while reducing transportation costs.

[0056] Preferred, refer to Figure 2 , 6 Figures 8 and 9 show that the bottom of the wedge-shaped groove 11 is provided with a plurality of slots 112 and an insertion port 113 that penetrates the notch 111;

[0057] The slots 112 are evenly distributed in the recesses 111 at the bottom of the wedge-shaped grooves 11;

[0058] The socket 113 is matched with the junction box of the photovoltaic module 3.

[0059] In one embodiment of the present invention, the bottom of the wedge-shaped groove 11 is provided with an insertion port 113 parallel to the wedge-shaped bottom surface, and slots 112 are evenly distributed on both sides of the insertion port 113, with the slots 112 arranged perpendicularly to the insertion port 113. The slots 112 are used for heat dissipation on the back of the photovoltaic module 3; the insertion port 113 cooperates with the junction box of the photovoltaic module 3 to prevent the junction box and cables from being exposed to direct sunlight. This embodiment is only one distribution of the insertion port 113 and the slots 112 and should not be construed as a limitation on the distribution of the insertion port 113 and the slots 112.

[0060] Preferred, refer to Figure 2 and 8 The diagram shows that a plurality of first drainage outlets 111a are provided on the side of the opening of the notch 111 near the bottom of the slope of the wedge-shaped groove 11.

[0061] In one embodiment of the present invention, a plurality of first drainage outlets 111a are provided on one side of the bottom of the wedge-shaped groove 11. Rainwater flows from the top of the slope to the bottom of the slope and is finally discharged through the first drainage outlets 111a, thus preventing rainwater from accumulating in the groove 111.

[0062] Furthermore, refer to Figure 2 , 3 Figures 5 and 9 show that the groove wall of the wedge-shaped groove 11 is provided with a plurality of ventilation holes 114.

[0063] In one embodiment of the present invention, ventilation holes 114 are provided on the top of the wedge-shaped groove 11 and on both sides of the groove wall, so that airflow can circulate in the groove 11, which facilitates the removal of heat generated on the back side of the photovoltaic module 3 during operation; at the same time, it avoids wind accumulation, making the structure of the device of the present invention more robust. The number, shape and position of the ventilation holes 114 are set according to actual needs.

[0064] Furthermore, refer to Figure 2 and 8 The diagram shows that the connecting frame 12 is provided with several second drainage outlets 121 at the ends near the bottom and top of the wedge-shaped groove 11.

[0065] In this embodiment of the invention, the drainage outlet 121 facilitates the drainage of accumulated water below, making the structure of the device more robust. The number of drainage outlets 121 can be determined according to actual needs.

[0066] Furthermore, refer to Figure 3-7 The diagram shows that several locking blocks 111b are arranged around the opening of the notch 111.

[0067] In this embodiment of the invention, locking blocks 111b are provided around the opening of the notch 111. The photovoltaic module 3 is firmly fixed to the photovoltaic module unit 1 by the locking blocks 111b. The number of locking blocks 111b can be determined according to actual needs.

[0068] Furthermore, refer to Figure 2 and 10 The diagram shows that the connecting frame 12 has overlapping portions 122 on both opposite sides, and the overlapping portions 122 of two adjacent photovoltaic module units 1 cooperate with each other.

[0069] In this embodiment of the invention, overlapping portions 122 are provided on both sides of the connecting frame 12. The overlapping portions 122 of two adjacent photovoltaic module units 1 cooperate to fix the two adjacent photovoltaic module units 1 to form a photovoltaic module arrangement.

[0070] Furthermore, refer to Figure 2 The diagram shows that the overlapping portion 122 is provided with a screw hole 122a.

[0071] In one embodiment of the present invention, the overlapping portion 122 is provided with a screw hole 122a, and two adjacent photovoltaic module units 1 are fixedly connected by bolts, as shown in the figure. Figure 14 It is shown that two adjacent photovoltaic module units 1 and the lower platform can also be fixedly connected by bolts, so that the photovoltaic module unit 1 is rooted and fixed to the lower platform.

[0072] Preferably, the inner wall of the wedge-shaped groove 11 is provided with reinforcing ribs.

[0073] In one embodiment of the present invention, reinforcing ribs are provided on the inner wall of the wedge-shaped groove 11. These reinforcing ribs do not affect the external structure of the device, but increase the strength and rigidity of the device structure, enabling it to resist external loads. The shape, size, and position of the reinforcing ribs can be set according to actual needs.

[0074] Working principle:

[0075] The wedge-shaped groove 11 is positioned with its opening facing the lower platform, and its bottom has an upward-opening recess 111, into which the photovoltaic module 3 is embedded. A connecting frame 12 surrounds the opening of the wedge-shaped groove 11, forming a photovoltaic module unit 1. Two adjacent photovoltaic module units 1 are connected and fixed together by the connecting frame 12 to form a photovoltaic module arrangement. A fixed counterweight 2 is placed between two adjacent photovoltaic module units 1 in the photovoltaic module arrangement to fix it to the lower platform.

[0076] The photovoltaic module 3 is embedded in the recess 111, and the opening of the recess 111 is higher than the photovoltaic module 3, which restricts the movement of the photovoltaic module 3. The wedge-shaped groove 11 has a slope, which increases the amount of solar radiation absorbed by the photovoltaic module 3, thereby increasing the power generation and improving the working efficiency of the photovoltaic system. At the same time, it can timely drain rainwater from the surface of the photovoltaic module 3 and remove dirt from the surface of the photovoltaic module 3, giving it a self-cleaning function. The bottom and top of the slope of the wedge-shaped groove form a small slope angle A. According to the wind load calculation formula, since the slope angle is small, the wind load shape coefficient is small, so the wind load on the photovoltaic module arrangement is also small. Therefore, a fixed counterweight of sufficient weight can be placed between two adjacent photovoltaic module units 1 to fix the photovoltaic module arrangement.

[0077] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0078] It will be readily apparent to those skilled in the art that any combination of the above embodiments is feasible, and therefore any combination of the above embodiments is an implementation scheme of the present invention. However, due to space limitations, this specification will not describe them in detail here.

[0079] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0080] Similarly, it should be understood that, in order to simplify the invention and aid in understanding one or more of the various inventive aspects, features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof in the above description of exemplary embodiments of the invention. However, this disclosure should not be construed as reflecting an intention that the claimed invention requires more features than expressly recited in each claim. Rather, as reflected in the claims, inventive aspects lie in fewer than all features of the single foregoing disclosed embodiment. Therefore, the claims following the detailed description are hereby expressly incorporated into that detailed description, wherein each claim itself is a separate embodiment of the invention.

[0081] Those skilled in the art will understand that modules in the device of the embodiments can be adaptively changed and placed in one or more devices different from that embodiment. Modules, units, or components in the embodiments can be combined into a single module, unit, or component, and further, they can be divided into multiple sub-modules, sub-units, or sub-components. Except where at least some of such features and / or processes or units are mutually exclusive, any combination can be used to combine all features disclosed in this specification (including the accompanying claims, abstract, and drawings) and all processes or units of any method or device so disclosed. Unless expressly stated otherwise, each feature disclosed in this specification (including the accompanying claims, abstract, and drawings) may be replaced by an alternative feature that serves the same, equivalent, or similar purpose.

[0082] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present invention.

[0083] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0084] The photovoltaic power generation system provided by the present invention has been described in detail above. Specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A photovoltaic power generation system, characterized in that, The system includes: Several photovoltaic module units (1) and several fixed counterweights (2); The photovoltaic module unit (1) includes: The wedge-shaped groove (11) has a slope. The groove opening of the wedge-shaped groove (11) is placed facing the lower platform. The bottom of the wedge-shaped groove (11) is provided with an upward-facing notch (111). The notch (111) cooperates with the photovoltaic module (3). The opening of the notch (111) is provided with a plurality of first drainage outlets (111a) on the side of the notch (111) near the bottom of the slope of the wedge-shaped groove (11). A connecting frame (12) surrounds the opening of the wedge-shaped groove (11) and is used to fix and connect each of the component module units (1); The photovoltaic module (3) is fixed at the notch (111) at the bottom of the wedge-shaped groove (11), and the photovoltaic module unit (1) is fixedly connected by each of the connecting frames (12) to form a photovoltaic module arrangement. A fixed counterweight (2) is placed between two adjacent photovoltaic module units (1) to press the photovoltaic module arrangement above the lower platform.

2. The system according to claim 1, characterized in that, The photovoltaic module unit (1) is made of plastic.

3. The system according to claim 1, characterized in that, The bottom of the wedge-shaped groove (11) is provided with a plurality of slots (112) and an insertion port (113) that passes through the notch (111); The slots (112) are evenly distributed in the recesses (111) at the bottom of the wedge-shaped grooves (11); The socket (113) is matched with the junction box of the photovoltaic module (3).

4. The system according to claim 1, characterized in that, The groove wall of the wedge-shaped groove (11) is provided with a number of ventilation holes (114).

5. The system according to claim 1, characterized in that, The connecting frame (12) is provided with several second drainage outlets (121) at the ends of the slope bottom and slope top of the wedge-shaped groove (11).

6. The system according to claim 1, characterized in that, The notch (111) is surrounded by several locking blocks (111b).

7. The system according to claim 1, characterized in that, The connecting frame (12) has overlapping parts (122) on both sides, and the overlapping parts (122) of two adjacent photovoltaic module units (1) cooperate with each other.

8. The system according to claim 7, characterized in that, The overlapping part (122) is provided with a screw hole (122a).

9. The system according to claim 1, characterized in that, The inner wall of the wedge-shaped groove (11) is provided with reinforcing ribs.

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