KR102310962B1 - Fiber-type Solar generator and solar power generation system using the generator - Google Patents

Abstract

The disclosed fiber yarn type photovoltaic generator device includes a core and a clad surrounding the core, and an optical fiber having a plurality of light exit windows on the outer peripheral surface of which the core is exposed, and sunlight mounted on the plurality of light exit windows. A power generation unit may be provided.

Description

Fiber-type solar generator and solar power generation system using the generator

One or more embodiments relate to a fiber yarn type photovoltaic generator and a photovoltaic power generation system to which the same is applied.

In photovoltaic power generation using sunlight, which is an infinite energy source, 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 is used. 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, and includes a visible light range of 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 power generation system includes a direct method in which sunlight is directly incident on the plane of a solar panel, and a condensing method using a reflective mirror or a condensing lens on 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 provide a fiber yarn-type photovoltaic generator capable of significantly increasing power generation efficiency while remarkably reducing an occupied area and a photovoltaic power generation system using the same.

One or more embodiments provide a fiber yarn type solar power generator with low manufacturing cost and reduced installation cost and a photovoltaic power generation system using the same.

One or more embodiments provide a fiber yarn type solar generator capable of effectively protecting a solar panel from thermal shock to extend the lifespan of the solar panel, and a solar power generation system using the same.

A solar generator according to one or more embodiments:

an optical medium through which sunlight travels in one direction; and

and a photovoltaic power generation unit mounted along the optical propagation path of the optical medium to absorb a portion of the propagating light that is branched from the optical medium in a path different from the one direction to generate power.

According to one or more embodiments, the optical medium may be provided by an optical fiber comprising a core and a clad.

According to one or more embodiments, the photovoltaic unit may be provided by a solid solar panel or a flexible solar panel.

Fiber yarn type photovoltaic generator according to one or more embodiments:

an optical fiber comprising a core through which light travels and a cradle covering the core, wherein one or more windows through which a portion of the light traveling through the core is emitted is formed on an outer circumferential surface of the body; and

It may include; one or more solar power units or elements mounted on the one or more windows.

According to one or more embodiments, the window may be provided on the cradle, and the core may be exposed to the outside through the window.

According to one or more embodiments, a saddle in which the photovoltaic unit is mounted may be formed in the window.

According to one or more embodiments, the photovoltaic unit may have a photoelectric conversion structure by an organic or inorganic material stacked structure provided on the window.

According to one or more embodiments, the photovoltaic unit may be provided by an individual device manufactured in the form of a chip.

According to one or more embodiments, a pair of power lines may be formed on the optical fiber in a longitudinal direction of the optical fiber, and the pair of electrodes may be electrically connected to the photovoltaic device.

A solar power system according to one or more embodiments:

support base; and

Including; a fiber-type solar power generator arranged in parallel to a plurality of the support base;

The fiber-type solar generator: includes a core through which light travels and a cradle covering the core, and one or more windows through which a portion of the light traveling through the core exits is formed on the outer circumferential surface of the body optical fiber; and

and one or more solar power units or elements mounted on the one or more windows.

1 is a view showing a basic structure of a fiber yarn type photovoltaic generator according to one or more embodiments.
Figure 2 is a schematic excerpted perspective view, in part, of a fiber-type solar power generator according to one or more embodiments.
3 is a partial longitudinal cross-sectional view showing the optical waveguide structure of the fiber yarn type solar power generator shown in FIG.
4 is a perspective view showing a schematic structure of a photovoltaic module according to one or more embodiments.
5 is an excerpted plan view of a photovoltaic generator applied to a photovoltaic module according to one or more embodiments.
6 is a schematic perspective view of a photovoltaic generator applied to the photovoltaic power module shown in FIG. 5 .
7 is a schematic cross-sectional view showing a support structure of a fiber-type solar power generator in the solar power module shown in FIGS. 5 and 6 .
FIG. 8 is a partially enlarged perspective view of a fiber-type solar power generator in the photovoltaic power module shown in FIGS. 5 and 6 .
9 shows a schematic structure of a photovoltaic system to which the photovoltaic power module shown in FIGS. 5 and 6 is applied.
FIG. 10 schematically shows a state of use of the solar power generation system shown in FIG. 9 .

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 due to 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.

Terms used in the present disclosure 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 exists, and includes 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.

In cases where certain embodiments may be implemented differently, a specific process sequence may be performed differently 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 may be expected, for example depending on manufacturing technology and/or tolerances. Therefore, the embodiments of the present invention should not be construed as being limited to the specific shape of the region shown in the present specification, but should include, for example, a change in shape resulting from a 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 "upper" may include not only directly above in contact, but also above in non-contact.

The photovoltaic unit applied to the exemplary embodiments described below is not limited to a specific structure. That is, the photovoltaic unit 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 one or more embodiments, the photovoltaic 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 photovoltaic unit has a structure of an organic polymer or inorganic semiconductor solar cell. According to another embodiment, the photovoltaic unit may include an amorphous or polycrystalline silicon-based solar panel. According to one or more embodiments, the photovoltaic device 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 photovoltaic unit may have a structure of a perovskite solar panel or a dye-sensitized solar panel. According to one or more embodiments,

The photovoltaic unit may include a photoelectric conversion structure directly formed on a window provided on the optical fiber or a saddle provided on the window, or a photoelectric conversion structure that is separately manufactured and attached. Of course, it is not limited to the above specific structure.

1 is a view showing the basic concept of a fiber-type solar power generator 1 according to one or more embodiments, and FIG. 2 is a schematic excerpted perspective view partially showing a fiber-type solar power generator according to one or more embodiments. am..

The optical fiber mentioned in one or more embodiments can be changed or replaced into various forms including an optical medium capable of guiding light.

The photovoltaic generator presented by one or more embodiments is an optical medium through which sunlight travels in one direction, and one or more mounted at a position adjacent to a light propagation path of the optical medium to advance the optical medium and a solar power generation unit that absorbs a portion of light to generate power.

As shown in FIG. 1, various types of photovoltaic generators 1 presented by one or more embodiments are light having a core 10a, which is a medium through which light travels, and a clad 10b surrounding it. A fiber 10 and one or more photovoltaic power generation units 12 disposed or implanted along the longitudinal direction of the optical fiber 10 to receive light from the core 10a to generate electricity.

Referring to FIG. 2 , the optical fiber 10 includes a plastic or glass core 10a, which is a medium through which light travels, and a clad 10b as a cover material to surround and cover it.

The photovoltaic unit 12 is installed on the bottom of the window 15 formed on the outer peripheral surface of the optical fiber 10 , that is, the saddle 13 . The window 15 is a portion in which the clad 10b is locally removed and the core 10a is exposed under the window 15 . The saddle 13 provided on the bottom of the window 15 is a part on which the photovoltaic unit 12 is mounted, and is formed to correspond to the shape of the sun and the bottom of the power generating unit 12 .

On the outer surface of the optical fiber 10, one or more openings or windows 15 through which a part of the light traveling through the core 10a escapes along the extension direction is provided at predetermined intervals. . The window 15 is a portion in which the clad 10b is locally removed and the core 10a is exposed under the window 15 .

A flat saddle 13 is provided at a lower portion of the window 15 by local lateral processing of the optical fiber 10 . The saddle 13 is a part on which the photovoltaic unit 12 is mounted, and is formed to correspond to the shape of the bottom of the sun and the power generating unit 12 . A photovoltaic power generation unit 12 that generates power by light waves supplied from the core 10a is mounted or implanted in the saddle 13 .

In this embodiment, the photovoltaic unit 12 is implemented in the form of a small chip. However, according to one or more embodiments, the photovoltaic unit 12 may be provided by a photoelectric conversion laminate structure directly coated or laminated on the saddle 13 .

As described above, the photovoltaic unit 12 may include a solid solar panel including a rigid substrate or a flexible solar panel including a flexible substrate. According to another embodiment, the photovoltaic unit 12 has a structure of an organic polymer or inorganic semiconductor solar cell.

According to another embodiment, the photovoltaic unit 12 may include an amorphous or polycrystalline silicon-based solar panel. According to one or more embodiments, the photovoltaic unit may include an organic polymer or inorganic compound photoelectric conversion layer formed on a substrate on a flexible metal or inorganic film.

One or more photovoltaic units 12 as described above may be installed on the side of the optical fiber 10 , and a power line or power for supplying power generated from the photovoltaic unit 12 to the outside. A power line 14 is provided.

The power line 14 may connect one or more photovoltaic units 12 in parallel by having a plurality of photovoltaic units 12 both have a bus line shape. To this end, the power line 14 is a negative power line (14n) and a positive power line (positive power line) formed in parallel along the surface of the clad 10b in the longitudinal direction of the optical fiber 10. 14p). These power lines 14n and 14a extend to the saddle 13 on which the photovoltaic unit 12 is mounted or formed so as to be electrically connected to the photovoltaic unit 12 .

3 is a cross-sectional view taken along line I-I of FIG. 2 showing the propagation of light inside the core 10a of the photovoltaic device 10 .

As shown in Fig. 3, a window 15 is formed on the outer circumferential surface of the optical fiber 10, and the photovoltaic unit 12 is mounted on the saddle 13 at the bottom of the window 15, thus Light emitted through the window 15 is incident on the photovoltaic unit 12 . The light incident surface of the photovoltaic unit 12 faces the core 10a, thereby allowing the incident of light from the core 10a. In this embodiment, the saddle 13 may be provided by a flat surface of the core 10a exposed through the window 15, and this flat surface may be formed by physical machining, for example, mechanical cutting. have.

In FIG. 3 , the power line 14 connected to the photovoltaic unit 12 is omitted for convenience. The power line 14 may be formed of an opaque high-conductive material or a transparent conductive material such as ITO, and the transparent power line 14 allows the light from the core 10a to travel to the solar power unit 12 It allows the light to pass through, thus suppressing a decrease in light utilization efficiency. However, according to one or more embodiments, the power line 14 may be formed of an opaque, translucent or transparent material, and the technical scope of the embodiment is not limited by the material selected for the power line 14 . One solar power generation system can be implemented by using a plurality of solar power generation devices as described above.

4 is a plan view illustrating a planar photovoltaic module 100 having a plurality of fiber-type photovoltaic power generation devices 1 as described above, and FIG. 5 is a partial enlarged view of the optical fiber 10. One light The arrangement structure of the photovoltaic unit 12 is shown on the fiber 10 .

As shown in FIGS. 4 and 5 , a plurality of photovoltaic power generation devices 1 in which a plurality of photovoltaic units 12 are implanted on one base 101 are arranged side by side. Power lines 14 as described above are formed on each of the photovoltaic elements 1 , and these photovoltaic elements 1 are supported by suitable support structures. As shown in Fig. 5, each fiber-type solar power generator 1 has a saddle 13 as described above, which is arranged long in the longitudinal direction with respect to the optical fiber 11 formed at regular intervals. .

6 is a schematic perspective view of the photovoltaic power generation module 100 shown in FIG. 4 , and FIG. 7 is a partial cross-sectional view showing the support structure of the optical fiber 10 by the spacer 102 . As shown in FIG. 6 , as a support structure, a plurality of spacers 102 in the form of a triangular pyramid are disposed on the upper surface of the base 101 in the form of a square net or an X-Y matrix. A photovoltaic device 1 on which a solar power unit 12 is mounted or implanted is sandwiched between the spacers 102 . The spacer 102 can effectively fix (hold) the optical fiber 10 of the photovoltaic device 1 by having appropriate elasticity and flexibility, and also, as shown in FIG. 7, two adjacent spacers 102 ), the lower portion of the curved arc-shaped bottom, ie, the curved surface portion of the base 101, can support the optical fiber 10 more stably. According to one or more embodiments, separately manufactured spacers 102 may be attached to the base 101, or they may be integrally formed.

8 is a partially enlarged view of the above-described solar power module 100 . Referring to FIG. 8 , a plurality of photovoltaic generators 1 are arranged side by side between the triangular pyramid-shaped spacers 102 . A negative power line 14n and a positive power line 14p formed side by side along the surface of the optical fiber 10 in the longitudinal direction, for example, the surface of the clad 10b are formed side by side, and these power lines ( 14n and 14p are formed extending toward the end of the optical fiber 10 . The technical scope of one or more embodiments is not limited by a specific arrangement form or structure of the power line 14 .

9 illustrates a photovoltaic system 110 by stacking a plurality of photovoltaic modules 100 .

As shown in FIG. 9 , the photovoltaic power generation module 100 shown in FIG. 4 is multi-stacked, and these multiple photovoltaic modules 100 constitute one large-capacity power generation system 110 . The scale of the large-capacity power generation system is determined by the number of stacked photovoltaic modules. Wiring for each photovoltaic module may depend on various types of commonly known wiring structures, and according to another embodiment, one end of the photovoltaic generator of the photovoltaic module is coupled in the form of a plug in a module unit to form a socket structure It may be provided with a connection module of. The connection module may have a function of an intermediate interface for connecting the power line of the solar power module to an external distribution line.

10 is a schematic configuration diagram of a power generation system to which the solar power structure shown in FIG. 9 is applied.

As shown in Fig. 10, the external optical fiber of the photovoltaic system 110, that is, one common light incident surface by the integration of facets of a plurality of optical fibers by bundling the front end of the optical fiber 10 or The light incident part 11 is formed, and the optical system 111 for converging sunlight to the light incident part 11 is installed here.

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 (20)

an optical fiber comprising a core through which light travels and a clad covering the core;
one or more windows formed in the clad of the optical fiber and formed by the local removal of the clad to expose the core thereunder;
one or more saddles having a flat surface formed by physical machining of a core exposed at the bottom of the one or more windows;
One or more solar power elements installed in the one or more saddles to absorb a portion of the light traveling through the core to generate electricity; and
A fiber yarn type photovoltaic generator comprising a; a pair of power lines formed along the longitudinal direction on the outer circumferential surface of the optical fiber and electrically connected to the one or more photovoltaic power generation elements. delete According to claim 1,
The photovoltaic device is manufactured in the form of a chip, and is provided by a solid solar panel in the form of a chip including a substrate of a hard material or a flexible solar panel including a flexible substrate. delete delete delete According to claim 1,
The photovoltaic device has a photoelectric conversion structure by an organic or inorganic material layered structure, a fiber yarn type photovoltaic generator. delete delete delete delete delete delete delete delete A solar cell comprising a plurality of fiber-type photovoltaic generators according to any one of claims 1, 3, or 7, and one or more supporting bases in which the plurality of fiber-type photovoltaic generators are arranged in parallel. photovoltaic module; and
An optical system for supplying sunlight to the optical fibers of the fiber-type photovoltaic generator; having, a photovoltaic system. delete delete delete delete

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