KR102269086B1 - basr-type solar power generation unit and system - Google Patents

Abstract

The disclosed bar-type photovoltaic unit: includes a core through which light waves travel and a clad covering the core, and a light output region including a light output window formed through the clad; at least one optical fiber provided with a light guide region for guiding light waves to the light exit region; a power generation part facing the optical fiber and including at least one solar panel configured to generate electricity by a light wave from the light exit area; and a tube type housing having a plurality of walls and a plurality of corners connected to the walls to provide an internal space in which the optical fiber and the solar panel are located, including, among the corners At least one optical fiber is installed, and the solar panel has a structure to face the at least one optical fiber.

Description

Bar-type solar power generation unit and system {basr-type solar power generation unit and system}

One or more embodiments relate to a solar power generating unit and system, and to a bar-type solar power generating unit and system capable of high integration and high capacity.

Solar power generation using sunlight, which is an infinite energy source, uses a panel or sheet in which a large number of solar cells are provided in a structure to which high energy solar light is incident. Such a photovoltaic power generation system does not have high photoelectric conversion efficiency, and therefore a very large installation area is required for large-capacity power generation.

Sunlight has a very wide wavelength range, including the visible light range from 400 to 700 nm. The intensity of this sun is not constant for each wavelength band. Currently, high-purity crystalline silicon-based solar panels commonly used in photovoltaic power generation absorb about 90% of only the wavelength range of 500 to 850 nm, and have low efficiency or almost no absorption for other wavelengths.

The solar panel unit of the solar power generation system is divided into a direct method in which sunlight reaches the plane of the solar panel to directly dim the solar panel, and a light collection method in which a reflection mirror or a condensing lens is used in the solar panel. The direct method is mainly applied to solar power generation facilities installed on the roof of a building or on the ground, but this is less efficient than the light collecting method using lenses or mirrors. The light collecting method to compensate for the shortcomings of the direct method should include a complex optical structure and a structure supporting the same. Therefore, the manufacturing cost of these conventional methods is high, and the life span of the solar panel due to high light intensity cannot be avoided.

One or more embodiments (one or more embodiments) is a bar-type solar power generation unit (bar-type solar power generation unit) capable of large-capacity power generation even in a space of a limited narrow area and a solar power generation system to which it is applied (solar generation system) ) is included.

Specifically, one or more embodiments include a bar-type solar power unit capable of mass integration and a solar power system to which the same is applied.

According to one or more embodiments (one or more embodiments),

solar power unit;

at least one optical fiber having a light output region having a light output window formed thereon and a light guide region guiding a light wave to the light output region;

a tube type housing having an inner space in which the optical fiber is located; And

a power generation part provided on at least one side of the housing and including a solar panel generating power by a light wave incident from a light output region of the optical fiber; and a solar power generation unit comprising a.

According to one or more embodiments, the housing may have a circular, elliptical, triangular, or more polygonal cross-sectional structure.

According to one or more embodiments, the housing has a plurality of walls forming the interior space, the optical fiber is located in a central region of the interior space of the housing, and the solar panel is provided on at least one of the plurality of walls. It can be formed or installed.

According to one or more embodiments, one or more ribs for supporting the optical fiber positioned in the inner space may be protruded from the wall of the housing.

According to one or more embodiments, the light exit window may be provided by a continuous or discontinuous groove formed in a spiral shape on an outer circumferential surface of the optical fiber.

According to one or more embodiments, the housing has a plurality of walls surrounding the optical fiber, and the optical fiber is located at at least one of a plurality of corners between the walls in the interior space, and the plurality of walls A solar panel to which the light from the optical fiber is incident may be formed or installed in at least one of them.

According to one or more embodiments, the inner space of the tube-shaped housing surrounding the inner space of the housing may have an inner wall corrugated in a wavy shape, and a solar panel may be formed on the inner wall.

According to one or more embodiments, a rib for supporting an optical fiber may be formed on an inner wall of the housing.

According to one or more embodiments, the housing may have a corrugated inner wall in a wavy shape, the solar panel may be formed on the inner wall, and the optical fiber may be spaced apart from the inner wall.

According to one or more embodiments, the inside of the housing is isolated from the outside by a sealing part to maintain an airtight state, and the internal air pressure is lower than the outside, for example, a vacuum state can be maintained.

According to one or more embodiments, the power generation unit may include a solid solar panel or a flexible solar panel.

According to one or more embodiments, the power generation unit may include an organic polymer or an inorganic semiconductor solar cell.

According to one or more embodiments, the power generation unit may include an amorphous or polycrystalline silicon-based solar panel.

According to one or more embodiments, the power generation unit may include an organic polymer or inorganic compound solar panel formed on a substrate on a flexible metal or inorganic film.

According to one or more embodiments, the power generation unit may include a perovskite solar panel.

According to one or more embodiments, the power generation unit may include a dye-sensitized solar cell.

According to one or more embodiments, the power generation unit may include a photoelectric conversion material directly formed on the inner wall of the housing.

According to one or more embodiments (one or more embodiments), a solar power system;

at least one optical fiber having a light output region in which an exit window is formed and a light guide region guiding a light wave to the light output region, the at least one optical fiber Power generation including a tube type housing having a space surrounding the light output area, and a solar panel provided on at least one side of the housing to generate electricity by light waves incident from the light output area of the optical fiber a solar power structure comprising a plurality of power generation parts; And

and an optical structure for supplying light waves to the solar power generation unit by converging sunlight into the light guide region of the optical fiber.

According to one or more embodiments, the end portions of the light guide portions of the optical fiber extending to the power generation unit are integrated into one or more bundles, so that the light incident surface by the integration of the facets of the plurality of optical fibers. One or more light incident portions having a light incident surface may be formed, and light waves may be focused on the light incident surface of the light incident portion by an optical structure.

According to one or more embodiments, the optical structure: may include a condensing lens for focusing the light wave on the optical fiber end of the solar power unit.

According to one or more embodiments, a photovoltaic unit and system in the form of a circular pole or a square pole are provided. This power generation unit has a structure in which a solfa panel is arranged around a space in which one or more optical fibers are located. A number of such bar-type solar power generation units can be three-dimensionally integrated, enabling large-capacity power generation in a narrow space, and the body of the power generation system except for the light incident surface can be installed indoors. According to such a photovoltaic power generation unit, it is possible to popularly distribute a large-capacity photovoltaic power plant and a medium/small power generation system while significantly lowering mobility, cost, and installation area. In particular, in order to secure a considerable area when installing a conventional solar power plant, it is possible to innovatively improve the increase in the management cost due to the deterioration of the environment and the decrease in the life span due to the change of the surrounding environment. Furthermore, it has the effect of being widely used in application fields such as solar electricity for home use, solar power generation in areas where it is difficult to secure a site, space engineering, large ships, electric vehicles, and portable electric appliances.

1 is a perspective view illustrating a concept of a power generation system using one optical fiber and a plurality of solar panels surrounding it, according to an exemplary embodiment.
Fig. 2 is a cross-sectional view taken along line II of Fig. 1 showing the relationship between the optical fiber and the solar panel.
3 is a perspective view for explaining the propagation (emission) of a light wave through an incident window of the light wave from the light guiding area Ri to the core of the optical fiber and from the light output window of the light exit area.
Fig. 4 is a longitudinal sectional view of the optical fiber shown in Fig. 3;
Fig. 5 is a cross-sectional view of the optical fiber shown in Fig. 3;
6 illustrates an optical fiber having a spiral light exit portion formed on a clad according to an exemplary embodiment.
7 schematically shows a photovoltaic power generation unit in the form of a square bar according to an exemplary embodiment.
Fig. 8 is a cross-sectional view taken along line II-II of Fig. 7;
9 is a three-dimensional view of the cross-sectional view of FIG.
10 shows a partial structure of a photovoltaic unit in which a plurality of optical fibers are installed inside a housing according to another embodiment.
11 illustrates an optical fiber that can be applied to the photovoltaic unit shown in FIG. 10 .
Fig. 12 illustrates the direction of light exiting from the optical fiber in the space inside the housing.
13 is a three-dimensional view of a schematic housing internal structure of a photovoltaic unit according to another embodiment.
Fig. 14 is a cross-sectional view taken along line III-III of Fig. 13;
15 schematically illustrates a structure of a housing of a photovoltaic unit according to another embodiment.
Fig. 16 schematically shows a solar power structure of a power generation system by means of a plurality of photovoltaic units.
FIG. 17 partially shows the underside of the solar power structure shown in FIG. 16 .
18 illustrates a schematic configuration of a solar power system according to an exemplary embodiment.

Hereinafter, preferred embodiments of the present invention concept will be described in detail with reference to the accompanying drawings. However, embodiments of the inventive concept may be modified in various other forms, and the scope of the inventive concept should not be construed as being limited by the embodiments described below. The embodiments of the inventive concept are preferably interpreted as being provided in order to more completely explain the inventive concept to those of ordinary skill in the art. The same symbols refer to the same elements from beginning to end. Furthermore, various elements and regions in the drawings are schematically drawn. Accordingly, the inventive concept is not limited by the relative size or spacing drawn in the accompanying drawings.

Terms such as first, second, etc. may be used to describe various elements, but the elements are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the inventive concept, the first component may be referred to as the second component, and conversely, the second component may be referred to as the first component.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the inventive concept. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, expressions such as “comprises” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification is present, but one or more other features or It should be understood that the existence or addition of numbers, operations, components, parts or combinations thereof is not precluded in advance.

Unless defined otherwise, all terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the inventive concept belongs, including technical and scientific terms. Also, commonly used terms as defined in the dictionary should be construed as having a meaning consistent with what they mean in the context of the relevant technology, and unless explicitly defined herein, in an overly formal sense. It will be understood that they should not be construed.

Where certain embodiments are otherwise feasible, a specific process sequence may be performed different from the described sequence. For example, two processes described in succession may be performed substantially simultaneously, or may be performed in an order opposite to the described order.

In the accompanying drawings, variations of the illustrated shapes can be expected, for example depending on manufacturing technology and/or tolerances. Therefore, the embodiments of the present invention should not be construed as limited to the specific shape of the region shown in the present specification, but should include, for example, changes in shape resulting from the manufacturing process. As used herein, all terms “and/or” include each and every combination of one or more of the recited elements. Also, as used herein, the term “substrate” may refer to a substrate itself or a laminate structure including a substrate and a predetermined layer or film formed on the surface thereof. Also, in this specification, the term "surface of a substrate" may mean an exposed surface of the substrate itself, or an outer surface of a predetermined layer or film formed on the substrate. In addition, what is described as "upper" or "on" may include not only directly above in contact, but also above in non-contact.

The solar panel or solar cell of the power generation unit applied to exemplary embodiments described below is not limited to a specific structure. That is, the solar panel applied to one or more embodiments may be replaced with any type of photoelectric conversion device or photoelectric conversion element that generates electricity by light waves.

According to preferred embodiments, the power generation unit may include a solid solar panel including a rigid substrate or a flexible solar panel including a flexible substrate. According to another embodiment, the power generation unit may include an organic polymer or an inorganic semiconductor solar cell. According to another embodiment, the power generation unit may include an amorphous or polycrystalline silicon-based solar panel. According to one or more embodiments, the power generation unit may include an organic polymer or inorganic compound photoelectric conversion material formed on a substrate on a flexible metal or inorganic film. According to one or more embodiments, the power generation unit may include a perovskite solar panel or a dye-sensitized solar panel. According to one or more embodiments, the power generation unit is formed directly on the inner wall of the housing. It may include a photoelectric conversion structure, and the solar panel or solar cell mentioned in the following description is not limited to the above specific structure, of course.

FIG. 1 is a perspective view showing a concept of a power generation system using one optical fiber and a plurality of solar panels surrounding it, according to an exemplary embodiment, and FIG. 2 is II of FIG. 1 showing the relationship between the optical fiber and the solar panel. It is a cross-sectional line.

1 and 2 , a plurality of light exit windows 11c through which the light wave 1 passes are formed on the outer peripheral surface of the light exit region Ro of the optical fiber 11 , and a plurality of solar cells are formed around the optical fiber 11 . The power generation unit by the panel 30 is arranged. Here, a portion of the optical fiber partially or wholly surrounded by the solar panel 30 corresponds to the light outgoing portion or light outgoing area Ro, and the portion into which the light wave 1 is injected is the light guide or light guide area ( Ri).

The light wave 1 is injected into the light guide region Ri through the core 11a of the optical fiber 11 , and a part of the light wave 1 traveling through the core 11a in the light exit area RO is converted to the core 11a. ), passes through the light exit window 11c formed in the clad 11b.

The light exit window 11c of the light exit area Ro is formed by partially removing the cladding 11b, and the core 11a is exposed at the bottom thereof. In this embodiment, the light exiting portions 11c of the optical fiber 11 are formed in four radial directions in correspondence with the four solar panels 30 arranged in four directions.

The solar panels 30 are disposed on the light wave propagation path from the light exit window 11c of the optical fiber 11 . The number of solar panels 30 is not limited, and according to another embodiment, two, three, or four, or more are provided so that the light output area of the optical fiber 11 is partially or wholly the solar panel ( 30) can be surrounded by Also, according to another exemplary embodiment, the solar panel 30 may be installed inside the housing 12 having a rectangular or polygonal pillar shape having a plurality of walls 12a surrounding the optical fiber 11 .

The optical fiber 11 is installed in the housing 12 or an internal space provided by a plurality of solar panels 30 inside the housing 12 to supply the light wave 1 to all the solar panels 30 .

3 illustrates the incident of the light wave 1 from the light guide region Ri to the core 11a of the optical fiber 11 and the propagation (emission) of the light wave through the light exit window 11c of the light exit region Ro. 4 is a longitudinal cross-sectional view of the optical fiber 11 , and FIG. 5 is a cross-sectional view of the optical fiber 11 .

3, 4, and 5, the core 11a through which the light wave 1 travels is covered by the cladding 11b. The clad 11b confines the light wave 1 in the core 11a through interfacial reflection and guides the light wave to travel inside the core 11a. The surface of the core 11a is exposed at the bottom or bottom of the light exit window 11c formed in the clad 11b in the light exit area, and therefore, a part of the light wave 1 that has been traveling through the core 11a is partially transmitted through it. come out outside

6 illustrates an optical fiber 11 having a spiral light exiting portion 11d formed in a clad. The spiral type light exiting part 11d may be formed by a groove formed in a spiral shape while rotating around the outer circumferential surface of the optical fiber 11 . This groove may be continuously formed over the entire outer circumferential surface of the optical fiber, or may be partially cut off and formed discontinuously in the clad. However, it goes without saying that various embodiments are not technically limited by the light exit window of a specific structure or shape formed in the clad.

7 schematically shows a photovoltaic power generation unit in the form of a square bar according to an exemplary embodiment.

The photovoltaic unit 10 shown in FIG. 7 includes a housing 12 having a plurality of walls 12a forming an inner space in which the light exit region Ro of the optical fiber 11 is embedded. One or more solar panels 30 are disposed inside the housing 12, partially or entirely enclosing the light exit area Ro of the optical fiber 11 as described in the description of FIGS. 1 and 2 . .

A sealing member or end caps 13 and 14 are coupled to both ends of the housing 12 , and an optical fiber 11 passes through one end cap 13 . The end caps 13 and 14 may have an inner space of the housing 12 isolated from the outside, and may be in a vacuum state. The inner space of the housing 12 in a vacuum state prevents light scattering or absorption by moisture or foreign substances, thereby increasing light use efficiency for power generation.

8 is a cross-sectional view taken along line II-II of FIG. 7, and FIG. 9 is a three-dimensional view of the cross-sectional view of FIG.

7, 8, and 9, the housing 12 has the shape of a rectangular bar having a rectangular cross section, and the light exit area of the optical fiber 11 is located in the center thereof. In addition, ribs (lib, 12a) in a diagonal direction from the four corners of the housing toward the inner center extend a predetermined length to support the optical fiber 11 provided at the inner center of the housing. Then, the solar panel 30 is installed on each of the inner surfaces of the four walls 12a inside the housing 12 .

The solar panel 30 is not limited by a specific material or structure, and may be installed on the inner wall of the housing 12 in the state of a finished body formed on a separate substrate, and according to another embodiment, the housing ( 12) may be formed by coating the photoelectric conversion material and electrodes on both sides of the inner wall itself.

10 shows a partial structure of a photovoltaic unit in which a plurality of optical fibers are installed inside a housing according to another embodiment, and FIG. 11 illustrates an optical fiber applicable to the photovoltaic unit shown in FIG. and Fig. 12 illustrates the direction of light exiting from the optical fiber in the housing.

Referring to FIG. 10 , the solar panel 30 is installed or formed on the inner wall of the housing 12 in the shape of a rectangular hollow rod. Then, the optical fibers 11 are provided at the four inner corners of the housing 12 . In this structure, as shown in FIG. 11, an optical fiber 11 having a light exit window 11c through which light waves are emitted in only one direction is applied. At this time, as shown in FIG. 12 , the optical fiber 11 has an outgoing light direction (arrow) toward the inner space of the housing 12, and at this time, the light outgoing direction is directed to the inner center (solid arrow) or two opposite sides away from it. It can be oriented to face any one of the solar panels (dotted arrow).

13 is a three-dimensional view of a schematic housing internal structure of a photovoltaic unit according to another embodiment, and FIG. 14 is a cross-sectional view taken along line III-III of FIG. 13 .

13 and 14, the housing 15 has the shape of a circular or elliptical pipe or tube, and has a plurality of ribs 15a extending from the inner wall of the housing 15 to the center at its inner center. The optical fiber 11 supported by the optical fiber 11 is positioned, and the solar panel 33 is attached or formed on the inner surface of the housing 15 . The solar panel 30 is a laminated structure including a photoelectric conversion material and an electrode on the inner wall of the housing 15 itself, and may be formed directly on the inner wall. According to another embodiment, a flexible solar panel based on a flexible film It can be replaced by a panel. In this embodiment, the difference in the travel distance of the light wave for each solar panel part from the optical fiber 11 is smaller than the difference in the travel distance in the solar power unit of the rectangular housing of the above-described embodiment.

15 schematically illustrates a structure of a housing of a photovoltaic unit according to another embodiment. The housing 16 in this embodiment has a hollow cylindrical shape, and an inner wall 16a of a corrugated wavy shape is formed therein. Thus, in the cross section of the housing, the inner space of the housing has a corrugated wavy or star shape. According to this structure, therefore, the wavy inner wall 16a has a greatly expanded area.

A photoelectric conversion structure for solar power generation may be laminated on the corrugated inner wall 16a, and one or more of the above-described optical fibers of various types may be installed therein.

Also, the protrusion of the inner wall of the corrugation may support the optical fiber positioned in the central region of the inner space.

Fig. 16 schematically shows a solar power generating structure of a power generation system by a plurality of photovoltaic units, and Fig. 17 partially shows a lower part of the solar power generating structure shown in Fig. 16 .

16 and 17, a plurality of photovoltaic power generation units 10 aligned in one direction (up and down in the drawing) are two-dimensionally densely arranged on one plane. The photovoltaic power generation unit 10 includes a housing 12 in the form of a square tube and an optical fiber having a light exit area Ro on one side inside the housing 12 . These solar power generation units 10 are concentrated in two directions to implement a large-scale solar power structure 40 .

In the solar power structure shown in Fig. 16, the light guide regions Ri of the countless optical fibers 11 provided thereon are bundled (bundled) into one or a plurality of bundles, and the sunlight for each bundle is transmitted by an optical system. converge

18 is a schematic configuration diagram of a power generation system to which the solar power structure shown in FIGS. 16 and 17 is applied.

As shown in FIG. 18 , the front end of the external optical fiber of the solar power structure 40 shown in FIG. 16 , that is, the light guide part Ri of the optical fiber is bundled into one, and the facets of a plurality of optical fibers are integrated. A common light incident surface or light incident portion 41 is formed, and an optical system 50 for converging sunlight to the light incident portion 41 is installed therein.

In the exemplary embodiment as described above, a well-known perovskite solfa panel or cell may be applied as the solfa panel of the solar power generation unit. A perovskite solar panel or solar cell comprises a perovskite structural compound.

Although shown and described in relation to specific embodiments in the present disclosure, it is understood in the art that the present invention can be variously improved and changed without departing from the spirit or field of the present invention provided by the following claims. It is intended to be clear that those with ordinary knowledge can easily know.

Claims (16)

A light output region including a core through which a light wave travels and a cladding covering the core, and a light output region including a light output window formed through the clad, and a light guide for guiding the light wave to the light output region at least one optical fiber provided with a light guide region;
a power generation part facing the optical fiber and including at least one solar panel configured to generate electricity by a light wave from the light exit area; And
Including; a tube-type housing having a plurality of walls and a plurality of corners where the walls are connected to each other to provide an internal space in which the optical fiber and the solar panel are located;
An optical fiber is installed in at least one of the corners, and the solar panel is installed to face the at least one optical fiber,
A plurality of light exit windows are formed in a longitudinal direction of the optical fiber to face the solar panel, and
The inner space of the housing is isolated from the outside by end caps fixed to both ends of the housing to maintain an airtight or vacuum state, a bar-type photovoltaic power generation unit. According to claim 1,
The solar panel is formed or installed on an inner surface of a wall facing the at least one optical fiber, a bar-type photovoltaic power generation unit. delete 3. The method of claim 1 or 2,
The housing has a rectangular structure with four walls surrounding the optical fiber,
The optical fiber is installed at four corners by the walls of the housing, and
A bar-type photovoltaic power generation unit in which a solar panel into which light from an optical fiber facing each wall is incident is formed or installed on each of the walls. 5. The method of claim 4,
The wall of the housing has an inner wall of a corrugated form,
A bar-type photovoltaic power generation unit, wherein a solar panel is formed on the inner wall. 3. The method of claim 1 or 2,
The wall of the housing has an inner wall of a corrugated form,
A bar-type photovoltaic power generation unit, wherein a solar panel is formed on the inner wall. 7. The method of claim 6,
The housing has a rectangular structure with four walls surrounding the optical fiber,
The optical fiber is installed at the four corners by the four walls, and
A bar-type photovoltaic power generation unit in which a solar panel through which light from an optical fiber facing each wall is incident is formed or installed on the four walls. delete delete delete A plurality of bar-type photovoltaic power generation units according to claim 1 or 2; And
A photovoltaic system comprising a; an optical structure for supplying light waves to the photovoltaic unit by converging sunlight into the light guide region of the optical fiber of a plurality of bar-type photovoltaic units. 12. The method of claim 11,
The housing of each of the plurality of bar-type photovoltaic units has a rectangular structure with four walls surrounding the optical fiber,
The optical fiber is installed at four corners by the walls of the housing, and
In each of the walls, a solar panel to which light from an optical fiber facing each wall is incident is formed or installed, a solar power generation system. 12. The method of claim 11,
The wall of the housing has an inner wall of a corrugated form,
A solar panel is formed on the inner wall, the photovoltaic unit is a photovoltaic system. delete delete delete

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