Vertical dip angle installed floating type photovoltaic device, array and photovoltaic power station

Abstract

The invention discloses a vertical dip angle installation floating type photovoltaic device, array and photovoltaic power station, the floating type photovoltaic device comprises a photovoltaic module, a buffer outer frame and a floating body base, the buffer outer frame is arranged around the photovoltaic module, and two sides of the floating body base are provided with a pair of mirror symmetry floating body holding lugs; the lower half parts of the floating body holding lugs are connecting parts of the adjacent floating body bases; the upper half parts of the floating body holding lugs are non-uniform in thickness, and the front surfaces and / or the rear surfaces of the upper half parts form guide surfaces due to the non-uniform thickness; the inner side of the upper half part of the floating body holding lug is provided with a fixing groove position, and the photovoltaic module fixed through the buffer outer frame is vertically installed in the fixing groove position of the floating body base. According to the invention, collision between adjacent assemblies is avoided, the arrangement density of the assemblies in the power station array and the anti-storm performance of the array are effectively improved, and the application scene of the vertical floating type photovoltaic power station is further widened.

Description

Technical Field

[0001] This invention belongs to the field of floating photovoltaic design, and particularly relates to a floating photovoltaic device and photovoltaic power station installed at a vertical tilt angle. Background Technology

[0002] Floating photovoltaic (PV) power plant technology has been widely used in the construction of various new energy power plants in recent years due to its low cost, rapid construction, and strong environmental adaptability. Research shows that vertically tilted PV systems can generate more power during peak electricity consumption periods in the morning and evening, which is beneficial for energy consumption and power plant operation, and has been adopted in some regions.

[0003] There are few existing designs for vertical installation of floating photovoltaic devices and photovoltaic power plants, and most of them are based on metal structures, with connection systems or methods that are often complex and susceptible to corrosion. Summary of the Invention

[0004] The technical problem solved by this invention is to propose a floating photovoltaic device and photovoltaic power station installed at a vertical tilt angle. Technical solution

[0005] This invention first provides a floating photovoltaic device installed at a vertical tilt angle, including a photovoltaic module, a buffer frame, and a floating base. The buffer frame is disposed around the photovoltaic module, and a pair of mirror-symmetrical floating lugs are disposed on both sides of the floating base. The lower half of the floating lugs is a connecting part of adjacent floating bases. The upper half of the floating lugs has a non-uniform thickness, and the front and / or rear surfaces of the upper half form guide surfaces due to the non-uniform thickness. A fixing slot is provided on the inner side of the upper half of the floating lugs, and the photovoltaic module, fixed by the buffer frame, is vertically installed in the fixing slot of the floating base.

[0006] The guide surface is an inclined surface or an arc surface.

[0007] The front surface of the upper half of the float lug is a guide surface, which is an inclined surface; the rear surface of the upper half of the float lug is a plane.

[0008] The connecting parts have a uniform thickness and are provided with connecting holes.

[0009] The floating body base has a hollow structure, and a counterweight is set at the bottom of the cavity.

[0010] The present invention also provides a floating photovoltaic array, comprising: Several of the aforementioned floating photovoltaic devices; as well as A connecting device is provided on the connecting part of the float lugs of two adjacent floating photovoltaic devices; the float lugs of the two float bases can slide axially under the connection of the connecting device; when adjacent floating photovoltaic devices are tossed by waves and rotate relative to each other around the connecting device, the photovoltaic modules will be misaligned and overlapped along the guide surface to avoid collision.

[0011] The connecting device is a connecting bolt.

[0012] The photovoltaic modules of the floating photovoltaic system are bifacial modules, with one side facing east and the other side facing west.

[0013] It also includes anchoring devices that are connected to the float lugs of the first and last floating photovoltaic devices.

[0014] The present invention also provides a photovoltaic power station, including the aforementioned floating photovoltaic device array.

[0015] Compared with the prior art, the above technical solutions of the present invention have the following technical effects: 1. In this invention, the photovoltaic panels are installed at a vertical tilt angle, and the power generation curve shows double peaks during the morning and evening hours (see...). Figure 8 Compared to the traditional optimal tilt installation method, which only experiences a peak in power generation during midday, this method better aligns with the electricity demand curves of areas with well-developed water systems (see [link]). Figure 9 This meets the requirements of power grid regulation. Furthermore, thanks to the vertical installation method, it allows for the staggered overlapping design of adjacent floating photovoltaic modules, which is beneficial for the widespread application of floating photovoltaic technology.

[0016] 2. In this invention, the floating base is designed with a non-uniform thickness lug structure to form a guide surface. The presence of the guide surface can guide the rotation path of the base when there is a relative angular deflection between adjacent floating bases, avoiding collisions between adjacent components, effectively improving the component arrangement density and the array's resistance to wind and waves within the power station array, and further expanding the applicable scenarios for vertical floating photovoltaic power stations.

[0017] 3. In this invention, the buffer frame is made of insulating elastic material and adhesive to encapsulate the frame of the photovoltaic module, so as to avoid collision between adjacent photovoltaic modules under extreme operating conditions, which would cause damage to the module and thus affect the safety of the power station.

[0018] 4. Compared with existing similar technologies, the present invention does not involve complex metal components. The floating body base can be made by high-density polyethylene blow molding or rotational molding process, which is mature, inexpensive, and has good durability and corrosion resistance. Attached Figure Description

[0019] Figure 1This is a schematic diagram of the structure of the floating photovoltaic device of the present invention; Figure 2 This is a schematic diagram of the structure of the floating body base in this invention; Figure 3 This is a schematic diagram of the structure of the float base lug in this invention; Figure 4 for Figure 3 Side view; Figure 5 This is a schematic diagram of the photovoltaic power station structure in this invention; Figure 6 This is a schematic diagram showing the shape of adjacent floating photovoltaic devices when the floating base undergoes angular deflection in this invention; Figure 7 for Figure 6 Top view; Figure 8 A comparison chart of power generation curves for different photovoltaic module installation methods; Figure 9 This is a typical daily load curve for all four seasons in my country.

[0020] In the diagram: 1. Photovoltaic module; 2. Buffer frame; 3. Floating base; 4. Connecting bolts; 5. Anchoring device. Detailed Implementation

[0021] The present invention will be further described below with reference to specific embodiments, which should not be construed as limiting the technical solution. Any modifications and / or alterations made to the present invention will fall within the protection scope of the present invention.

[0022] Example 1 This embodiment provides a floating photovoltaic device installed at a vertical tilt angle, such as... Figure 1 It includes a photovoltaic module 1, a buffer frame 2, and a floating base 3. The photovoltaic module 1 is fixed inside the buffer frame 2, and the buffer frame 2 with the photovoltaic module 1 fixed is vertically installed on the upper end of the floating base 3.

[0023] In the description of this example, the buffer frame 2 is made of an insulating elastic material (such as styrene-butadiene rubber) and is fixed to the perimeter of the photovoltaic module 1 by an adhesive to improve its waterproof and shock-resistant performance.

[0024] In this example, the floating base 3 is a hollow structure, and a counterweight is placed at the bottom of the cavity to ensure its shape stability during floating. Figure 2 .

[0025] A pair of mirror-symmetrical float lugs 31 are provided on the left and right sides of each float base 3, such as Figure 3The lower half 311 of the float lug 31 is the connecting part of the adjacent float base 3, and has a uniform thickness of L1. The upper half 312 of the float lug 31 has a non-uniform thickness. The upper half 312 transitions smoothly with the lower half 311. A through hole 3111 is provided in the lower half 311. The thickness of the upper half 312 gradually increases from the outer edge inward, that is, from the thickness L1 at the outer edge to the thickness L2 at the inner edge, see [reference]. Figure 4 .

[0026] The uneven thickness of the upper half 312 of the floating body lug 31 can be formed by a slope or arc surface that forms an angle with the photovoltaic module.

[0027] In the description of this example, the upper inner side of the float lug 31 is provided with a slot 32 for inserting and vertically fixing the photovoltaic module 1 encapsulated by the buffer frame 2.

[0028] Example 2 This embodiment provides a floating photovoltaic array, including photovoltaic modules 1, a buffer frame 2, a floating base 3, and a connecting device 4. See [link to documentation]. Figure 5 .

[0029] The connecting device 4 is connected to the float lugs 31 of two adjacent float bases 3; the float lugs 31 of the two float bases 3 can slide axially under the connection of the connecting device 4, that is, when the two float bases 3 rotate relative to each other, the distance between the two float bases 3 can change.

[0030] In one embodiment, the connecting device 4 is a connecting screw.

[0031] In this example, adjacent floating photovoltaic (PV) units are placed face-to-face with their float lugs 31 and connected in series using connecting bolts. The float lugs 31 at the beginning and end of the series are used to install the anchoring device 5. The PV modules of the floating PV units are bifacial modules, with one side facing east and the other side facing west. After connection, due to the structure of the float lugs 31, when adjacent floating PV units are tossed by waves and rotate relative to each other around the connecting bolts, the fixed PV modules 1 will overlap in a staggered manner without colliding with each other. Figure 6 and Figure 7 .

[0032] In this example, when power plant equipment requires maintenance or replacement, the floating photovoltaic unit to be replaced can be directly removed, the array temporarily secured with ropes, and then the buffer frame 2 and photovoltaic module 1 can be removed. The damaged parts are then replaced and reassembled into the array. The above maintenance process is simple to operate, has minimal impact on the overall array structure, and has low long-term operation and maintenance difficulty and cost.

[0033] Example 3 This embodiment provides a photovoltaic power station, including the floating photovoltaic device provided in Embodiment 1 or the floating photovoltaic array provided in Embodiment 2, and other auxiliary facilities such as energy storage devices and conversion devices.

[0034] The above embodiments illustrate and describe the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A floating photovoltaic device installed at a vertical tilt angle, comprising photovoltaic modules, a buffer frame, and a floating base, wherein the buffer frame is disposed around the photovoltaic modules, characterized in that, A pair of mirror-symmetrical float lugs are provided on both sides of the float base; the lower half of the float lugs is the connection part of the adjacent float bases; the upper half of the float lugs has a non-uniform thickness, and the front and / or rear surfaces of the upper half form a guide surface by the non-uniform thickness; a fixing slot is provided on the inner side of the upper half of the float lugs, and the photovoltaic module fixed by the buffer frame is vertically installed in the fixing slot of the float base.

2. The floating photovoltaic device according to claim 1, characterized in that, The guide surface is an inclined surface or an arc surface.

3. The floating photovoltaic device according to claim 2, characterized in that, The front surface of the upper half of the float lug is a guide surface, which is an inclined surface; the rear surface of the upper half of the float lug is a plane.

4. The floating photovoltaic device according to claim 1, characterized in that, The connecting parts have a uniform thickness and are provided with connecting holes.

5. The floating photovoltaic device according to claim 1, characterized in that, The floating body base has a hollow structure, and a counterweight is set at the bottom of the cavity.

6. A floating photovoltaic array, characterized in that, include: The floating photovoltaic device according to any one of claims 1-5; as well as A connecting device is provided on the connecting part of the float lugs of two adjacent floating photovoltaic devices; the float lugs of the two float bases can slide axially under the connection of the connecting device; when adjacent floating photovoltaic devices are tossed by waves and rotate relative to each other around the connecting device, the photovoltaic modules will be misaligned and overlapped along the guide surface to avoid collision.

7. A floating photovoltaic array according to claim 6, characterized in that, The connecting device is a connecting bolt.

8. A floating photovoltaic array according to claim 6, characterized in that, Also includes: An anchoring device is attached to the float lugs of the first and last floating photovoltaic devices.

9. A floating photovoltaic array according to claim 6, characterized in that, The photovoltaic modules of the floating photovoltaic system are bifacial modules, with one side facing east and the other side facing west.

10. A photovoltaic power station, characterized in that, Includes the floating photovoltaic array as described in any one of claims 6-9.

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