WO2016045473A1

WO2016045473A1 - Flexible photovoltaic bracket

Info

Publication number: WO2016045473A1
Application number: PCT/CN2015/087716
Authority: WO
Inventors: 董英杰; 陈汉臣; 朱核平; 郑世仁; 陆炳权
Original assignee: 浙江国利英核能源有限公司
Priority date: 2014-09-22
Filing date: 2015-08-20
Publication date: 2016-03-31
Also published as: CN104242800A

Abstract

A flexible photovoltaic bracket (1), for fixing and supporting a photovoltaic module (2); the flexible photovoltaic bracket (1) comprises at least two support parts (11) and at least one group of flexible assemblies (12); the flexible assemblies (12) are connected between the at least two support parts (11); the photovoltaic module (2) is fixed on the flexible assemblies (12); and the flexible assemblies (12) are made of a flexible material. The flexible photovoltaic bracket (1) has wide adaptability and flexibility of use, and provides effective safety and optimal economical secondary use of land. As a revolutionary invention in the field of photovoltaic brackets, the flexible photovoltaic bracket can promote rapid development in photovoltaic power generation.

Description

Flexible photovoltaic support

Technical field

The invention relates to a mounting structure of a solar power generating device, in particular to a flexible photovoltaic bracket.

Background technique

The existing PV module mounting brackets at home and abroad are formed by forming steel or steel plate, and consisting of a column, a diagonal bracing support and a horizontal bracket to form a triangular structure. The erected side of the triangle is the support column and the other side is the mounting surface with the foundation. The support column is fixed to the mounting base and the photovoltaic module is mounted on the slope of the sun.

The existing photovoltaic module installation process is generally: first, pouring concrete foundation (independent foundation or strip foundation) or piling, and embedding metal embedded parts. Secondly, the high-strength fasteners fix the column and the diagonal support to the metal embedded part of the foundation, and the horizontal bracket is erected on the column and the support as a rectangular slope. Finally, the photovoltaic module is attached to the rectangular bevel of the stent.

However, the existing installation structure has the following defects and deficiencies: 1. The land occupation is large, especially the centralized photovoltaic power station (multiple sets of photovoltaic modules can be assembled into a contiguous photovoltaic array, and centralized photovoltaic power plants often need large pieces. The photovoltaic array will occupy a large amount of rare land resources. Once photovoltaic power generation is installed, the land cannot be reused. 2. The amount of steel consumed is large, and the body of the bracket consumes more steel. If more water is needed for the foundation of the water treatment tank surface of the sewage treatment plant or other need for overhead, the cost is high. 3. The bracket needs to be installed on a set of planes. Uneven terrain such as barren hillsides will not be used, or large machinery will be needed for finishing. The cost and construction difficulty will be greatly increased. Similarly, the inclined steel-plastic panel roof is also difficult to use. 4. When installing distributed photovoltaics on the roof, a large number of mounting holes need to be drilled on the roof, which will cause roof leakage and cause many problems. 5. The PV module can obtain the highest conversion rate at the best elevation angle. The existing bracket can only be installed on the plane, which greatly affects the installation range of distributed PV and has low economic benefits.

In addition, photovoltaic power plants are installed in the unobstructed wilderness, roof or uphill slopes and where the sun shines well. These occasions are the places that are greatly affected by strong winds. Typhoons and earthquakes are also the biggest hidden dangers of damage to the PV array. Wind pressure is proportional to the square of the wind speed, and high-speed typhoons will generate huge wind pressure. The wind pressure on the windward surface is integrated along the surface, and the wind pressure on the large-area photovoltaic array is too large, so that the component frame, the fixed platen and the bracket cannot be resisted. Moreover, the strong pulsating wind and the self-vibration period of these structures will produce a resonance response, resulting in collapse of the entire set of mounting brackets. Hainan "Weimason" strong typhoon 200Km / h wind speed, most of the photovoltaic power station was damaged by typhoon. Traditional photovoltaic supports are also vulnerable to destruction in the event of an earthquake.

Summary of the invention

In order to overcome at least one of the deficiencies of the prior art, the present invention provides a flexible photovoltaic support.

In order to achieve the above object, the present invention provides a flexible photovoltaic support for fixing and supporting a photovoltaic module. The flexible photovoltaic support includes at least two supports and at least one set of flexible components. The flexible component is coupled between the at least two supports, the photovoltaic component is secured to the flexible component, and the flexible component is fabricated from a flexible material.

In an embodiment of the invention, the flexible component is any one or more combinations of steel strands, steel cords, steel cables, steel cables or steel chains.

In an embodiment of the invention, the flexible photovoltaic support further includes at least two elastic members, and both ends of the flexible assembly are fixed by the elastic member and the support member.

In an embodiment of the invention, the elastic member is any one or a combination of a spring pad, a spring, a spring steel plate, and a spring steel plate.

In an embodiment of the invention, the support member is a height-adjustable support column.

In an embodiment of the invention, the flexible assembly includes at least two flexible components that are parallel to each other and that have a height difference.

In an embodiment of the invention, the number of flexible components is a plurality of groups, and the plurality of sets of flexible components cross each other to form a mesh.

In an embodiment of the invention, the flexible photovoltaic support further includes a bracket, the photovoltaic component is fixed to the bracket, and the bracket is fixed to the flexible component.

In an embodiment of the invention, the two ends of the flexible component are respectively fixed to the carrier of the photovoltaic power station through the support member.

In an embodiment of the invention, the number of supports is at least three, wherein two supports are disposed at two ends of the flexible assembly, and at least one of the supports is disposed at a middle portion of the flexible assembly.

In summary, since the support member occupies only a small amount of land area, the large-area photovoltaic module is "suspended, pulled, hung, and supported" in the air by the flexible component. Therefore, the mounting bracket of the invention is flexible and suitable for local conditions, and is not restricted by landforms, and is particularly suitable as an agricultural greenhouse, wasteland, barren hill, fish pond, beach, river, abandoned land and abandoned mine, landfill, water plant, sewage treatment plant. Installation carriers for photovoltaic power plants that are subject to environmental constraints. In addition, the PV module fixed on the flexible component can be arbitrarily set up and down, obtain the optimal elevation angle, improve the power generation efficiency, reduce the wind pressure area, reduce the drag coefficient, fully complement the agricultural light, complement the fishing light, and realize the land of different environments. Secondary use. The PV module is fixed on the flexible component and is cushioned by strong winds and earthquakes to avoid damage caused by resonance response or strong vibration. The flexible photovoltaic stent provided by the invention has wide adaptability, flexibility of use and effective safety The full use of the whole nature and the land for economical use is a revolutionary creation of photovoltaic support, which will rapidly promote the development of the global photovoltaic industry.

The above and other objects, features and advantages of the present invention will become more <RTIgt;

DRAWINGS

1 is a front elevational view of a flexible photovoltaic support provided in accordance with an embodiment of the present invention.

Figure 2 is a plan view of Figure 1.

Figure 3 is a partial cross-sectional view taken along line A-A of Figure 1.

detailed description

1 is a front elevational view of a flexible photovoltaic support provided in accordance with an embodiment of the present invention. Figure 2 is a plan view of Figure 1. Figure 3 is a partial cross-sectional view taken along line A-A of Figure 1. The flexible photovoltaic support 1 provided by the present invention is used to fix and support a photovoltaic module 2 comprising at least two supports 11 and at least one set of flexible components 12. The "group" referred to in the present invention may be one or more. In other words, the set of flexible components 12 referred to herein may include one or more flexible components 12.

The flexible component 12 is mounted between at least two support members 11, and the photovoltaic component 2 is fixed to the flexible component 12, and the flexible component 12 is made of a flexible material. In this embodiment, the flexible component 12 can be any one or more combinations of steel strands, steel cords, steel cables, steel cables, or steel chains. The steel cable may be a flexible rope twisted from a plurality of or a plurality of thin steel wires. The steel wire can be twisted into a strand by a multi-layer steel wire, and then a certain number of strands are wound into a spiral rope centered on the core. However, the invention is not limited in this regard, and any flexible material can be used to form the flexible component 12 of the present invention. The "flexible" material in the present invention refers to a material that allows a deformation amount relative to a rigid material. In other embodiments, the flexible component 12 can be fabricated from other deformable metals such as copper, aluminum, iron, and the like. And the material composition of the flexible component 12 may not be singular, and may be formed by compounding a plurality of materials. .

The prior art is to install the photovoltaic module on the rigid support. Since the support is rigid, when the weather is in a severe climatic condition such as a typhoon, the wind pressure of the photovoltaic component is very large, and since the rigid support cannot be deformed, it is easy to be brittle. . The invention innovatively installs the photovoltaic component on the flexible material. When encountering a severe weather such as earthquake or strong wind, the elastic deformation of the flexible material itself can offset part of the external force, and also avoid the possible resonance, thereby reducing the loss to lowest.

In the present embodiment, the flexible photovoltaic support 1 further includes at least two elastic members 14 , and both ends of the flexible assembly 12 are fixed by the elastic members 14 and the support members 11 . However, the present invention is not limited thereto. In other embodiments, both ends of the flexible component 12 can be directly secured to the support 11. The elastic member 14 can be made of any material having elasticity. In practical applications, the elastic member 14 can be a spring washer, a spring, and a spring steel. Any one or more combinations of plates and spring steel sheets. In the event of a severe weather such as a typhoon, the elastic member 14 can utilize its own elasticity to further reduce the oscillations experienced by the flexible component 12, avoiding possible resonances, thereby minimizing losses.

In the present embodiment, the support member 11 is a fixed or adjustable height support column. The support member can be arranged as a plurality of steel products which are mutually nested and telescopically fixed. Therefore, in different use occasions, the support member can be adjusted according to the site environment, thereby achieving the purpose of standardized production. However, the present invention is not limited thereto. In other embodiments, the support member 11 can be constructed by a plurality of sets of support units. According to the actual needs of the occasion, the constructor can select a certain number of support units to determine the height of the support member.

In the present embodiment, the flexible component 12 includes at least two flexible components 12 that are parallel to each other and that have a height difference. As shown in Figure 3, the height of one flexible component is higher than the height of another adjacent flexible component. Each photovoltaic module is simultaneously fixed to two flexible components. The mounting angle θ of the photovoltaic module can be controlled by adjusting the height difference of the two flexible components 12 such that the photovoltaic component 2 is at an optimal illumination angle to achieve maximum photoelectric conversion. In practical applications, at least a plurality of supports 11 may be provided, and the adjacent two supports 11 have a height difference to achieve different heights of adjacent flexible components 12. However, the present invention is not limited thereto. In other embodiments, a plurality of sets of fixed positions may be provided on one support member 11, and the height of the flexible member 12 is determined by fixing one end of the flexible member 12 to different positions on the support member 11.

A total of four sets of flexible components 12 are depicted in Figure 3, with four sets of flexible components 12 being parallel to one another. However, the present invention is not limited thereto. In other embodiments, any two sets of flexible components 12 may also have a height difference between them, and the flexible component 12 may be arranged in any direction with a height difference in any direction.

In practical applications, the number of flexible components 12 can be multiple sets, and the plurality of sets of flexible components 12 cross each other to form a mesh. With this arrangement, the plurality of sets of photovoltaic modules 2 constitute a photovoltaic square array, and the range of the photovoltaic square array can be arbitrarily adjusted by using the plurality of support members 11.

In the present embodiment, the flexible photovoltaic support 1 further includes a bracket 13 to which the photovoltaic module 2 is fixed, and the bracket 13 is fixed to the flexible component 12. In practical applications, the bracket 13 can be a rigid bracket. However, the present invention is not limited thereto. By providing the bracket 13, the fixing of the photovoltaic module 2 and the flexible component 12 is made more secure.

In this embodiment, the two ends of the flexible component 12 are respectively fixed to the carrier 3 of the photovoltaic power station through the support member 11. With this arrangement, both ends of the flexible member 12 are tightened, and the state parallel to the ground can be retained as much as possible, and oscillation is also prevented. The carrier 3 can be anything that can be fixed in a photovoltaic power plant.

In the present embodiment, the number of the support members 11 is at least three, wherein two support members 11 are disposed at two ends of the flexible assembly 12, and at least one of the support members 11 is disposed at a middle portion of the flexible assembly 12. With this arrangement, "oscillation" is prevented from occurring when the flexible component 12 is too long.

In summary, since the support member 11 occupies only a small amount of land area, the large-area photovoltaic module 2 is "suspended, pulled, hung, and supported" in the air by the flexible member 12. Therefore, the mounting bracket of the invention has a small floor space, is flexible and flexible, and is suitable for local conditions, and is not suitable for landforms, and is particularly suitable for agricultural greenhouses, wasteland, barren hills, fish ponds, beaches, rivers, abandoned land and abandoned mines, landfills, sewage treatment. Plants and other environmentally-friendly photovoltaic power plant installation carriers. And the land between each two supports can be fully utilized to maximize the utilization of land space. In addition, the photovoltaic module 2 fixed on the flexible component 12 can be disposed at a front, rear, left and right intervals, without blocking light and reducing the wind pressure area. The photovoltaic module 2 is fixed on the flexible component 12, and is buffered by strong winds and earthquakes to avoid damage caused by resonance response or strong vibration. The flexible photovoltaic support 1 provided by the invention has wide adaptability, flexibility of use, effective safety and full secondary use economy, and is a revolutionary creation of photovoltaic supports, which will rapidly promote the perfect development of photovoltaic power generation.

The invention has the advantages of economy, the overhead installation does not affect the sunlight, the ground can operate as usual, and the land is completely reused; the safety, the flexible component avoids the loss caused by the strong typhoon and the earthquake; the wide adaptability and the flexibility of use make Abandoned mines and barren hills that are not available for use can be fully utilized. Saving resources is the foundation of green economy and sustainable development. The invention is a revolutionary creation of photovoltaic supports, which will rapidly promote the perfect development of distributed photovoltaic power generation.

Although the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the invention, and the invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the scope of the claims.

Claims

A flexible photovoltaic support for fixing and supporting a photovoltaic component, characterized in that the flexible photovoltaic support comprises at least two support members and at least one set of flexible components, the flexible component being mounted between at least two support members, the photovoltaic component being fixed on On the flexible component, the flexible component is made of a flexible material.
The flexible photovoltaic support of claim 1 wherein the flexible component is any one or more of a combination of steel strands, steel cords, steel cables, steel cables or steel chains.
The flexible photovoltaic support according to claim 1, wherein the flexible photovoltaic support further comprises at least two elastic members, and both ends of the flexible assembly are fixed by the elastic member and the support member.
The flexible photovoltaic support according to claim 3, wherein the elastic member is any one or a combination of a spring pad, a spring, a spring steel plate, and a spring steel plate.
The flexible photovoltaic support of claim 1 wherein said support member is an adjustable height support post.
The flexible photovoltaic support of claim 1 wherein each set of flexible components comprises at least two flexible components that are parallel to each other and that have a height difference.
The flexible photovoltaic support according to claim 1, wherein the number of the flexible components is a plurality of groups, and the plurality of sets of flexible components cross each other to form a mesh.
The flexible photovoltaic support of claim 1 wherein said flexible photovoltaic support further comprises a bracket, said photovoltaic component being secured to said bracket, said bracket being secured to the flexible component.
The flexible photovoltaic support according to claim 1, wherein the two ends of the flexible component are respectively fixed to the carrier of the photovoltaic power station through the support member.
The flexible photovoltaic support according to claim 1, wherein the number of the support members is at least three, wherein two support members are disposed at two ends of the flexible assembly, and at least one of the support members is disposed at a middle portion of the flexible assembly. .