Spherical photovoltaic module capable of enhancing radiation absorption and photovoltaic system

Abstract

The utility model belongs to the field of offshore photovoltaic, and provides a spherical photovoltaic assembly capable of enhancing radiation absorption and a photovoltaic system. Wherein the radiation absorption enhanced spherical photovoltaic module comprises a hollow spherical bracket and a blade-shaped photovoltaic module; the blade-shaped photovoltaic assembly comprises a plurality of blade-shaped photovoltaic panels, and the blade-shaped photovoltaic panels are fixed on the hollow spherical support at equal intervals; all the blade-shaped photovoltaic panels are connected in parallel, one end of each blade-shaped photovoltaic panel is connected to a first connection point, the other end of each blade-shaped photovoltaic panel is connected to a second connection point, and the first connection point and the second connection point are two end points of one diameter of the hollow spherical support.

Description

Technical Field

[0001] The utility model belongs to the field of photovoltaics, and in particular relates to a spherical photovoltaic component and a photovoltaic system for enhancing radiation absorption. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] Most of the existing photovoltaic power generation components are flat-plate structures of monocrystalline silicon or polycrystalline silicon. Using this structure for photovoltaic power generation requires a large area and a high initial cost. As the operating time increases, the temperature of the PV photovoltaic components will rise excessively due to long-term sunlight exposure, greatly reducing the power generation efficiency of the PV photovoltaic components. In addition, if placed in an outdoor environment for a long time, some dust containing corrosive particles will react with the PV photovoltaic components under high temperature, resulting in a decrease in the photovoltaic module's photoelectric conversion efficiency. Flat-plate photovoltaic power generation components occupy a large area, and it is difficult to use flat-plate photovoltaic components to generate solar photovoltaic power. For example, the solar cell material, location, weather conditions, solar incidence angle and module direction will have a significant impact on the output efficiency of the photovoltaic system.

[0004] As the earth rotates around itself and around the sun, the incident angle of the sun changes constantly throughout the day. In order to adapt to the changing incident angle of the sun and improve the power generation efficiency of photovoltaic modules, the commonly used solution nowadays is to add a solar tracking system under the flat photovoltaic modules. However, the application of solar tracking systems is greatly limited due to their complex structure and operation, high maintenance costs, and susceptibility to factors such as weather conditions. Utility Model Content

[0005] In order to solve the technical problems existing in the above-mentioned background technology, the utility model provides a spherical photovoltaic module and a photovoltaic system with enhanced radiation absorption, which can improve power generation efficiency and reduce floor space without adding a solar tracking system.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A spherical photovoltaic module with enhanced radiation absorption, comprising:

[0008] Hollow spherical bracket and leaf-shaped photovoltaic module;

[0009] The blade-shaped photovoltaic assembly includes a plurality of blade-shaped photovoltaic panels, and the blade-shaped photovoltaic panels are fixed on the hollow spherical bracket at equal intervals;

[0010] All of the blade-shaped photovoltaic panels are connected in parallel, and one end of all of the blade-shaped photovoltaic panels is connected to a first connection point, and the other end is connected to a second connection point, and the first connection point and the second connection point are two end points of one diameter of the hollow spherical bracket.

[0011] As an implementation manner, each of the blade-shaped photovoltaic panels includes a flexible support plate and a flexible thin-film solar photovoltaic cell; the flexible thin-film solar photovoltaic cell is arranged at the center of the flexible support plate.

[0012] As an implementation manner, the flexible support plate is an axisymmetric structure.

[0013] As an implementation manner, the flexible support plate is composed of two arc-shaped sides.

[0014] As an implementation manner, the flexible thin-film solar photovoltaic cell is rectangular in shape.

[0015] As an implementation manner, the shape of the flexible thin-film solar photovoltaic cell is the same as that of the flexible support plate.

[0016] As an implementation manner, the bottom of the hollow spherical bracket is also connected to a base, and the base is used to support the hollow spherical bracket.

[0017] As an implementation manner, the base is a support column.

[0018] As an implementation mode, the hollow spherical bracket is composed of horizontal and vertical circular rings.

[0019] A second aspect of the utility model provides a photovoltaic system.

[0020] A photovoltaic system, comprising:

[0021] Energy storage device, charge controller, inverter and enhanced radiation absorption spherical photovoltaic module as described above;

[0022] The enhanced radiation absorption spherical photovoltaic module is used to convert light energy into electrical energy;

[0023] The charging controller is used to supply power to the load after a part of the converted electric energy is converted by the inverter, and the remaining electric energy is directly stored in the energy storage device.

[0024] The beneficial effects of the utility model are:

[0025] (1) The utility model fixes the blade-shaped photovoltaic panels at equal intervals on a hollow spherical bracket to form a spherical photovoltaic module, which not only occupies a small area, but also can make full use of sunlight, thereby increasing the power generation compared to a planar PV module system.

[0026] (2) Compared with the dust accumulation on the flat photovoltaic module, the dust particles on the spherical photovoltaic module with strong radiation absorption of the utility model will slide off the curved surface, so the dust accumulation is less.

[0027] (3) The blade-shaped photovoltaic panels of the utility model are fixed at equal intervals on the hollow spherical bracket, and the surface temperature of the curved photovoltaic module has better air circulation because the tiny gap between each two photovoltaic blades will cool the system when wind passes between them.

[0028] Advantages of additional aspects of the present invention will be partially given in the following description, and partially become apparent from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0030] Figure 1 This is a schematic diagram of the structure of a spherical photovoltaic module with enhanced radiation absorption according to an embodiment of the utility model;

[0031] Figure 2 This is a schematic diagram of the structure of a leaf-shaped photovoltaic panel according to an embodiment of the utility model;

[0032] in:

[0033] 1. Blade-shaped photovoltaic module; 2. Blade-shaped photovoltaic panel; 3. Gap; 4. Flexible support plate; 5. Flexible thin-film solar photovoltaic cell; 6. Base. DETAILED DESCRIPTION

[0034] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0035] It should be noted that the following detailed descriptions are all exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0036] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0037] Embodiment 1

[0038] like Figure 1 As shown, this embodiment provides a spherical photovoltaic assembly with enhanced radiation absorption, comprising: a hollow spherical bracket and a blade-shaped photovoltaic assembly 1; the blade-shaped photovoltaic assembly 1 comprises a plurality of blade-shaped photovoltaic panels 2, and the blade-shaped photovoltaic panels 2 are fixed on the hollow spherical bracket at equal intervals; wherein any two adjacent blade-shaped photovoltaic panels 2 form a gap 3;

[0039] All of the blade-shaped photovoltaic panels 2 are connected in parallel, and one end of all of the blade-shaped photovoltaic panels 2 is connected to a first connection point, and the other end is connected to a second connection point, and the first connection point and the second connection point are two end points of one diameter of the hollow spherical bracket.

[0040] In this embodiment, the hollow spherical bracket is composed of horizontal and vertical circular rings.

[0041] like Figure 2 As shown, each of the blade-shaped photovoltaic panels 2 includes a flexible support plate 4 and a flexible thin-film solar photovoltaic cell 5 ; the flexible thin-film solar photovoltaic cell 5 is arranged at the center of the flexible support plate 4 .

[0042] In this embodiment, the flexible support plate 4 is an axisymmetric structure.

[0043] The flexible support plate 4 is composed of two arc-shaped sides.

[0044] In this embodiment, the flexible thin-film solar photovoltaic cell 5 is in a rectangular shape.

[0045] In other embodiments, the shape of the flexible thin-film solar photovoltaic cell 5 is the same as that of the flexible support plate 4 .

[0046] In the specific implementation process, the flexible support plate can be made of polyacrylate materials; the flexible thin-film solar photovoltaic cell can be realized by silicon thin-film cells (a-Si, a-Si / c-Si, etc.).

[0047] If one half of a silicon wafer is made into a P-type semiconductor and the other half is made into an N-type semiconductor, the interface becomes a PN junction. When sunlight shines on the PN junction, the energy of the light can be absorbed by electrons, and the electrons overcome the constraints of the nuclei, break away, and make directional movements at the PN junction interface where the potential difference is formed, forming a current, which is then transmitted to the electrical equipment through the parallel connection of multiple blades.

[0048] This embodiment takes the structure of six blade-shaped photovoltaic panels evenly distributed on a 0.25m sphere as an example. After simulation calculation, for the same solar cell type and surface area, a single spherical PV module tilted 45 degrees has 6.7% more power generation than a flat PV module system, and more than a horizontal spherical PV module. This configuration can replace the solar tracking system to achieve solar error tracking, thereby significantly minimizing the expensive tracking cost.

[0049] It should be noted here that the specific number of blade-shaped photovoltaic panels can be set according to actual conditions and will not be described in detail here.

[0050] Since the surface of the spherical photovoltaic module is a curved structure, dust particles will slide off the curved surface, so there is less dust accumulation; at the same time, the surface of the curved photovoltaic module has better air circulation, because the tiny gap between each two photovoltaic blades will cool the system when the wind passes between them; secondly, for the case of using the same number of PV modules, the footprint of the ball is a circular area equal to half the footprint of a rectangular traditional PV module. Finally, the spherical photovoltaic module can adapt well to the change of the solar incident angle, ensuring that there is always an area perpendicular to the solar incident radiation when the solar incident angle changes.

[0051] In one or more embodiments, the bottom of the hollow spherical bracket is also connected to a base 6, and the base 6 is used to support the hollow spherical bracket. For example, the base 6 is a support column.

[0052] The photovoltaic module structure of this embodiment can not only reduce land costs, but also provide a vertical photovoltaic area so that it is exposed to the sun all day to collect sunlight and generate more electricity. In addition, the adaptability of the PV structure to solar tracking errors is much higher than that of traditional flat-plate PV modules.

[0053] Embodiment 2

[0054] This embodiment provides a photovoltaic system, including an energy storage device, a charging controller, an inverter, and the enhanced radiation absorption spherical photovoltaic module as described above;

[0055] The enhanced radiation absorption spherical photovoltaic module is used to convert light energy into electrical energy;

[0056] The charging controller is used to supply power to the load after a part of the converted electric energy is converted by the inverter, and the remaining electric energy is directly stored in the energy storage device.

[0057] It should be noted that the energy storage device, charging controller and inverter can all be implemented using existing technologies. For example, the energy storage device can be implemented using a battery pack, the charging controller can be implemented using a "MPPT solar controller 48v40A" model product, and the inverter can be implemented using a "C48-AC220 / 110V" model multifunctional product.

[0058] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A spherical photovoltaic module with enhanced radiation absorption, characterized in that: include: Hollow spherical bracket and leaf-shaped photovoltaic module; The blade-shaped photovoltaic assembly includes a plurality of blade-shaped photovoltaic panels, and the blade-shaped photovoltaic panels are fixed on the hollow spherical bracket at equal intervals; All of the blade-shaped photovoltaic panels are connected in parallel, and one end of all of the blade-shaped photovoltaic panels is connected to a first connection point, and the other end is connected to a second connection point, and the first connection point and the second connection point are two end points of one diameter of the hollow spherical bracket.

2. The enhanced radiation absorption spherical photovoltaic module according to claim 1, characterized in that: Each of the blade-shaped photovoltaic panels comprises a flexible support plate and a flexible thin-film solar photovoltaic cell; the flexible thin-film solar photovoltaic cell is arranged at the center of the flexible support plate.

3. The enhanced radiation absorption spherical photovoltaic module according to claim 2, characterized in that: The flexible support plate is an axisymmetric structure.

4. A spherical photovoltaic module with enhanced radiation absorption as claimed in claim 2 or 3, characterized in that: The flexible support plate consists of two arc-shaped sides.

5. The enhanced radiation absorption spherical photovoltaic module according to claim 2, characterized in that: The flexible thin-film solar photovoltaic cell is in a rectangular shape.

6. The enhanced radiation absorption spherical photovoltaic module according to claim 2, characterized in that: The shape of the flexible thin-film solar photovoltaic cell is the same as that of the flexible support plate.

7. The enhanced radiation absorption spherical photovoltaic module according to claim 1, characterized in that: The bottom of the hollow spherical bracket is also connected to the base, and the base is used to support the hollow spherical bracket.

8. The enhanced radiation absorption spherical photovoltaic module according to claim 7, characterized in that: The base is a supporting column.

9. The enhanced radiation absorption spherical photovoltaic module according to claim 1, characterized in that: The hollow spherical bracket is composed of horizontal and vertical circular rings.

10. A photovoltaic system, characterized in that: include: An energy storage device, a charge controller, an inverter, and an enhanced radiation absorption spherical photovoltaic module as described in any one of claims 1 to 9; The enhanced radiation absorption spherical photovoltaic module is used to convert light energy into electrical energy; The charging controller is used to supply power to the load after a part of the converted electric energy is converted by the inverter, and the remaining electric energy is directly stored in the energy storage device.

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