CN111371399B - Optical fiber conduction solar photovoltaic power generation system - Google Patents
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/20—Optical components
- H02S40/22—Light-reflecting or light-concentrating means
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
- G02B19/0038—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with ambient light
- G02B19/0042—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with ambient light for use with direct solar radiation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S10/00—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
- H02S10/20—Systems characterised by their energy storage means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/52—PV systems with concentrators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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Abstract
The invention discloses an optical fiber conduction solar photovoltaic power generation system which comprises a light collection unit, a conduction unit and a power generation unit, wherein the light collection unit is of an optical fiber light collection layer structure and comprises a reflection layer and an optical fiber braided layer which are sequentially arranged from bottom to top, and the optical fiber braided layer is braided into a surface by an optical fiber bundle without a cladding; the transmission unit is an optical fiber transmission device, the input end of the optical fiber transmission device is connected with the tail end of the optical fiber bundle of the optical fiber braid layer, and the output end of the optical fiber transmission device is connected with the power generation unit. Compared with the traditional light collector, the optical fiber light collecting layer structure has the advantages that the adopted optical fiber woven layer has low cost, simple structure, convenient manufacture and the like, the complicated optical element light collecting system and sunlight positioning and tracking system of the traditional light collector are omitted, and the solar ray collecting efficiency of the optical fiber is improved.
Description
Technical Field
The invention belongs to the technical field of solar power generation, and particularly relates to an optical fiber conduction solar photovoltaic power generation system.
Background
The solar photovoltaic power generation system directly converts solar light energy into electric energy through a solar cell and outputs the electric energy to the outside, and is mainly divided into a concentrating power generation system and a non-concentrating power generation system. The concentrating power generation system mainly comprises a solar cell, a light collector and a sunlight positioning and tracking system, the light collector can be used for focusing sunlight to a receiving surface (solar cell) from 1/10 to 1/1000 or even smaller, compared with a non-concentrating power generation system, the concentrating power generation system can greatly reduce the using area of the solar cell and improve the conversion efficiency of the system, the cost of photovoltaic power generation is effectively saved, compared with a flat non-concentrating solar cell, the conversion current of the flat non-concentrating solar cell can be improved by more than 2 times, the power generation efficiency of the flat non-concentrating solar cell can be improved by more than 30%, the using amount of the solar cell is effectively reduced, and the cost of the photovoltaic power generation is reduced. The concentrating power generation system is a high-efficiency power generation mode which organically combines an optical technology and a solar cell power generation technology.
However, the concentrated light power generation system has several problems: (1) the structure of the optical collector is precise and complex, and the whole design and manufacturing difficulty is higher; (2) the sunlight positioning and tracking system has higher requirement on the long-term reliability of the system operation, thereby further increasing the overall cost and the operation and maintenance cost.
The invention discloses a non-tracking concentrating photovoltaic power generation device, which relates to the technical field of solar power generation and comprises photovoltaic power generation units which are connected in series and arranged in a matrix manner and a closed box body packaged outside each photovoltaic power generation unit, wherein a solar cell slice is positioned at the bottom of an optical fiber light cone photovoltaic condenser, the light receiving surface of the solar cell slice is tightly attached to the small end of the optical fiber light cone photovoltaic condenser, and a fixing support is arranged outside the optical fiber light cone photovoltaic condenser and supports and fixes the optical fiber light cone photovoltaic condenser to form the photovoltaic power generation unit. The invention can receive the sunlight rays in all corresponding directions by utilizing the conical optical fibers in all directions, not only can receive direct light, but also can receive diffused light, can realize space large-angle sunlight ray collection without tracking the sun, converts the solar energy into electric energy by the circular solar cell, and solves the problem that the prior art is inapplicable when the incident light rays deviate from the axle center of the condenser greatly.
According to the technical scheme, the large end and the small end of each tapered optical fiber are closely attached and densely arranged from inside to outside to form the optical fiber light cone photovoltaic condenser which is integrally in a tapered structure, the small end of the optical fiber light cone photovoltaic condenser faces downwards, the large end of the optical fiber light cone photovoltaic condenser faces upwards, a solar cell slice is located at the bottom of the optical fiber light cone photovoltaic condenser, a light receiving surface of the solar cell slice is closely attached to the small end of the optical fiber light cone photovoltaic condenser, and a fixing support is arranged outside the optical fiber light cone photovoltaic condenser and supports and fixes the optical fiber light cone photovoltaic condenser to form the photovoltaic power generation unit. The optical fiber light cone photovoltaic condenser can utilize the conical optical fibers in all directions to receive the sunlight rays in all corresponding directions, although the gathering and collection of the sunlight rays can be improved compared with the existing optical collector, and a sunlight positioning and tracking system is not needed, the structure of the optical fiber light cone photovoltaic condenser is precise and complex, the whole design and manufacturing difficulty is high, and the operation cost is high.
The invention with the publication number CN105144403B discloses a solar optical fiber photovoltaic power generation device. The device comprises a light condensation unit (1), a light splitting unit (8) and an optical fiber power generation unit; the light condensation unit is used for carrying out light condensation treatment on incident light; the light splitting unit is used for splitting natural light or light processed by the light condensing unit according to the wavelength of the light; the power generation unit is used for converting the light source processed by the light splitting unit into electric energy. The device leads sunlight into the power generation unit for energy conversion after the sunlight is subjected to condensation and light splitting combined treatment, can efficiently and quickly convert solar energy into electric energy, and is large in generated energy and environment-friendly.
In the technical scheme, the optical fiber is mainly applied to a power generation unit, and the defects of precise and complex structure and need of a sunlight positioning and tracking system still exist for a light condensation unit.
The invention patent of publication No. CN102943989A provides a sunlight indoor lighting optical fiber conduction device and a working method thereof. The double-ball joints of the lighting unit and the positioning unit are clamped by the fixed plate and the movable plate in the double-ball joint positioning holes to form a parallel mechanical structure with the double-ball joint combination parallel to each other, and the movable plate is driven by the driving mechanism to enable the lighting unit and the positioning unit to swing in parallel when tracking the sun; the positioning optical fibers are arranged on the cross positioning optical fiber heads in a cross mode, and optical coupling of the positioning optical fibers and the photosensitive elements in one-to-one correspondence is adopted to realize synchronous tracking of all lighting units of the optical fiber conduction device to the sun. The invention has compact appearance and plate shape as a whole, can be mounted on the outer wall of a building without being limited to the roof, is favorable for building integration, and is suitable for natural lighting of shady rooms and basements.
The technical scheme is firstly used for indoor illumination, although optical fibers are adopted for conducting, the lighting unit still has the problem of precise and complex structure, and a positioning unit is required to be matched with and track the sun, so that the operation cost is high.
Disclosure of Invention
The invention aims to provide an optical fiber conduction solar photovoltaic power generation system.
In order to solve the technical problems, the invention adopts the following technical scheme:
an optical fiber conduction solar photovoltaic power generation system comprises a light collection unit, a conduction unit and a power generation unit, wherein the light collection unit is of an optical fiber light collection layer structure and comprises a reflection layer and an optical fiber woven layer which are sequentially arranged from bottom to top, and the optical fiber woven layer is formed by weaving optical fiber bundles without cladding;
the transmission unit is an optical fiber transmission device, the input end of the optical fiber transmission device is connected with the tail end of the optical fiber bundle of the optical fiber braid, and the output end of the optical fiber transmission device is connected with the power generation unit.
The power generation unit comprises a Fresnel lens, a solar cell panel and a storage battery, light transmitted by the output end of the optical fiber transmission device enters the Fresnel lens, is condensed by the Fresnel lens and then enters the solar cell panel to convert solar energy into electric energy, and the electric energy is stored in the storage battery.
The optical fiber braid has two optical fiber bundle ends, wherein one of the optical fiber bundle ends is connected with the input end of the optical fiber conducting device.
The LED light source device comprises an LED light emitting device and an LED light conduction device, the LED light emitting device generates LED light, the LED light enters the input end of the LED light conduction device, and the output end of the LED light conduction device is connected with the tail end of the other optical fiber bundle of the optical fiber braid layer.
The LED light-emitting device is powered by a storage battery of the power generation unit.
The optical fiber braided layer is woven by an unclad optical fiber bundle according to a weft direction method.
And the optical fiber bundles of the optical fiber braided layer are fixed in the synthetic resin matrix.
And a waterproof layer is also arranged above the optical fiber braided layer.
The invention has the beneficial effects that:
1. the light collecting unit is an optical fiber light collecting layer structure and comprises a reflecting layer and an optical fiber braided layer which are sequentially arranged from bottom to top, wherein the optical fiber braided layer is formed by braiding optical fiber bundles without claddings into a surface, when solar rays irradiate the whole section of optical fibers of the optical fiber braided layer, a part of rays are refracted and enter the optical fibers, under the action of the reflecting layer, a part of rays can be reflected inside the optical fibers and are conducted along the direction of the optical fibers, and are finally collected to the tail end of the optical fiber bundle, the other part of rays are refracted and dissipated and are transmitted to the air again, as each optical fiber in the optical fiber braided layer is integrally exposed to the sunlight, the dissipation of the part of refracted optical fibers is compensated, and meanwhile, the optical fiber braided layer is of a surface structure, the received sunlight is more, and the collection efficiency of the optical fibers to the solar rays is improved.
Compared with the traditional light collector, the optical fiber light collecting layer structure has the advantages that the adopted optical fiber braided layer has low cost, simple structure, convenient manufacture and the like, the complicated optical element light collecting system and sunlight positioning and tracking system of the traditional light collector are omitted, although the light collecting efficiency in unit area is inferior to that of the traditional light collector, the braided cloth with any size can be manufactured according to the design requirement due to the fact that the optical fiber bundle is woven into the surface, therefore, sunlight can be collected to the maximum degree under the unfolding condition, and the optical fiber dissipation loss in unit area is made up.
2. The reflecting layer of the optical fiber light-collecting layer structure is designed, and the light energy collected by the optical fiber needs to consider the scattering and refraction loss of the light energy, so that the reflecting layer is added on the bottom surface of the optical fiber light-collecting layer structure, and the purposes of reducing the scattering and refraction loss of the light energy and increasing the light energy collecting efficiency are achieved.
The waterproof layer design of the optical fiber light-collecting layer structure can enhance the hydrophobicity of the whole material, thereby greatly improving the waterproof performance of the material.
3. The invention is also provided with a reverse lighting unit, the reverse lighting unit comprises an LED light-emitting device and an LED light conduction device, the LED light-emitting device generates LED light, the LED light enters the input end of the LED light conduction device, the output end of the LED light conduction device is connected with the tail end of the other optical fiber bundle of the optical fiber braided layer, the LED lighting unit combines the principles of LED lighting and optical fiber conduction, the dissipation characteristics of reflection and refraction of the optical fiber can exist in the process of conducting the light in the pure optical fiber without cladding, the LED light-emitting device adopts different filters to change the color of the light, the whole optical fiber braided layer presents different colors, and the night warning function is realized.
4. The invention utilizes the optical fiber conduction device to collect the gathered sunlight on the Fresnel lens, effectively enhances the intensity of the light through the focusing function of the lens, and realizes the effective conversion of solar energy/electric energy by combining the solar cell panel and the storage battery.
Solar cell panel because the focusing effect of chenille lens has promoted the utilization ratio of light energy by a wide margin to the effectual size that reduces solar cell panel.
5. The invention is suitable for three different power transmission modes of independent photovoltaic power generation, grid-connected photovoltaic power generation and distributed photovoltaic power generation, and has huge market potential and product popularization.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a tank circuit layout of the present invention;
FIG. 3 is a schematic cross-sectional view of an optical fiber light collecting layer structure of the present invention;
FIG. 4 is a schematic view of the solar ray collection principle of the optical fiber light collecting layer structure of the present invention;
FIG. 5 is a schematic diagram of the principle of backward light emission of the structure of the optical fiber light collecting layer of the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings.
As shown in fig. 1 to 5, an optical fiber conduction solar photovoltaic power generation system of the present invention includes a light collection unit, a conduction unit and a power generation unit. The light collecting unit is an optical fiber light collecting layer structure 1 and comprises a reflecting layer 11 and an optical fiber braided layer 12 which are sequentially arranged from bottom to top, wherein the optical fiber braided layer 12 is formed by braiding an unclad optical fiber bundle into a surface according to a weft direction method. The optical fiber braid 12 has two optical fiber bundle ends.
As shown in fig. 4, when the sunlight irradiates on the whole optical fiber of the optical fiber braid 12, a part of the sunlight is refracted and enters the optical fiber, under the action of the reflective layer, a part of the sunlight is reflected inside the optical fiber and conducted along the direction of the optical fiber, and finally collected to the tail end of the optical fiber bundle, and another part of the sunlight is refracted and dissipated to be transmitted to the air again.
Compared with the traditional light collector, the optical fiber light collecting layer structure of the invention has the advantages of low cost, simple structure, convenient manufacture and the like of the adopted optical fiber braided layer 12, omits a light collecting system and a sunlight positioning and tracking system of complex optical elements of the traditional light collector, and has the advantages that although the light collecting efficiency per unit area is not as good as that of the traditional light collector, but the braided cloth with any size can be manufactured according to the design requirement due to the adoption of the optical fiber bundle woven surface, so that the sunlight can be collected to the maximum extent under the condition of expansion, and the optical fiber.
The reflecting layer 11 is a silver coating, and the light energy collected by the optical fiber needs to be considered in scattering and refraction loss of the light energy, so that the reflecting layer is added on the bottom surface of the optical fiber light collecting layer structure, and the purposes of reducing scattering and refraction loss of the light energy and increasing the collection efficiency of the light energy are achieved.
The optical fiber bundle of the optical fiber braid 12 may be fixed in a synthetic resin matrix. The synthetic resin takes reinforced unsaturated polyester, epoxy resin and phenolic resin as matrix materials, and the forming process can be flexibly selected according to the shape, technical requirements, application and quantity of products.
A waterproof layer 13 (a nano waterproof coating) can be arranged above the optical fiber braided layer 12, so that the hydrophobicity of the whole material can be enhanced, and the waterproof performance of the material is greatly improved.
The conducting unit is an optical fiber conducting device 2, the input end of the optical fiber conducting device 2 is connected with the tail end of one optical fiber bundle of the optical fiber braid, and the output end of the optical fiber conducting device 2 is connected with the power generating unit. The optical fiber conducting device is a cladded optical fiber bundle.
The power generation unit comprises a Fresnel lens 31, a solar cell panel 32 and a storage battery 33, light transmitted by the output end of the optical fiber conduction device 2 enters the Fresnel lens 31, is condensed by the Fresnel lens 31 and then enters the solar cell panel 32 to convert solar energy into electric energy, and the electric energy is stored in the storage battery 33.
The invention utilizes the optical fiber conduction device to collect the gathered sunlight on the Fresnel lens 31, effectively enhances the intensity of the light through the focusing function of the lens, and realizes the effective conversion of solar energy/electric energy by combining the solar cell panel 32 and the storage battery 33.
The optical fiber conduction solar photovoltaic power generation system further comprises a reverse lighting unit, and the reverse lighting unit only works at night. The reverse lighting unit comprises an LED light emitting device 41 and an LED light conducting device 42, the LED light emitting device 41 generates LED light, the LED light enters an input end of the LED light conducting device 42, and an output end of the LED light conducting device 42 is connected with the other optical fiber bundle end of the optical fiber braid 12.
In the present embodiment, the LED lighting device 41 is powered by the battery of the power generation unit. The LED light-conducting device is a cladded fiber bundle.
The principle of single combination of LED illumination and optical fiber conduction of reverse illumination is as shown in figure 5, and as the dissipation characteristic that the reflection and refraction of optical fiber can exist in the process of conducting light in pure optical fiber without cladding is utilized, the LED light-emitting device adopts different filters to change the color of light, the whole optical fiber braided layer presents different colors, and the night warning function is realized.
The embodiment also discloses an energy storage circuit of the Optical Fiber Conduction solar Photovoltaic power generation System, as shown in fig. 2, the energy storage circuit mainly comprises four main parts, namely an OFCPVS power generation array (Optical Fiber Conduction Photovoltaic System, abbreviated as OFCPVS), a controller and an inverter.
OFCPVS power generation array: the power generation device mainly comprises a series-parallel connection assembly, an anti-reflux diode and a bypass diode, wherein the series-parallel connection assembly is composed of OFCPVS power generation monomers. The OFCPVS power generation monomers are connected in series or in parallel according to the requirements of a system to form a matrix or a square matrix, convert solar energy into electric energy under the irradiation of sunlight, and are core components of photovoltaic power generation. The anti-reflux diode can effectively prevent the current from reversely flowing from the storage battery to the OFCPVS power generation array and protect the failed OFCPVS power generation unit. The bypass diode can protect the bypassed component from being damaged by higher forward bias voltage or heat generated by 'hot spot effect'; a controller: the system is used for controlling the working state of the whole system and playing the roles of overcharge protection and over-discharge protection on the storage battery; an inverter: the inverter can be carried out according to the requirement of a load power supply, so that the electric energy converted by the photovoltaic array can be used by common electric equipment after being converted.
The invention makes the design of the optical fiber conduction solar photovoltaic power generation system possible, the system is also suitable for three different power transmission modes of independent photovoltaic power generation, grid-connected photovoltaic power generation and distributed photovoltaic power generation, and the system has huge market potential and product popularization.
Although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that: modifications and equivalents may be made thereto without departing from the spirit and scope of the invention and it is intended to cover in the claims the invention as defined in the appended claims.
In the description of the present invention, it is to be understood that the terms "front", "back", "upper", "lower", "left", "right", "middle" and "one", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the scope of the present invention.
Claims (5)
1. The utility model provides an optical fiber conduction solar photovoltaic power generation system, includes light harvesting unit, conduction unit and electricity generation unit, its characterized in that: the light collecting unit is an optical fiber light collecting layer structure and comprises a reflecting layer and an optical fiber braided layer which are sequentially arranged from bottom to top, wherein the optical fiber braided layer is formed by braiding an optical fiber bundle without a cladding layer according to a weft direction method;
the transmission unit is an optical fiber transmission device, the input end of the optical fiber transmission device is connected with the tail end of the optical fiber bundle of the optical fiber braid, and the output end of the optical fiber transmission device is connected with the power generation unit;
the optical fiber braid layer is provided with two optical fiber bundle tail ends, wherein one optical fiber bundle tail end is connected with the input end of the optical fiber conducting device;
the LED light source device comprises an LED light emitting device and an LED light conduction device, the LED light emitting device generates LED light, the LED light enters the input end of the LED light conduction device, and the output end of the LED light conduction device is connected with the tail end of the other optical fiber bundle of the optical fiber braid layer.
2. The fiber optic conduction solar photovoltaic power generation system of claim 1, wherein: the power generation unit comprises a Fresnel lens, a solar cell panel and a storage battery, light transmitted by the output end of the optical fiber transmission device enters the Fresnel lens, is condensed by the Fresnel lens and then enters the solar cell panel to convert solar energy into electric energy, and the electric energy is stored in the storage battery.
3. The fiber optic conduction solar photovoltaic power generation system of claim 1, wherein: the LED light-emitting device is powered by a storage battery of the power generation unit.
4. The fiber optic conduction solar photovoltaic power generation system of any one of claims 1-3, wherein: and the optical fiber bundles of the optical fiber braided layer are fixed in the synthetic resin matrix.
5. The fiber optic conduction solar photovoltaic power generation system of any one of claims 1-3, wherein: and a waterproof layer is also arranged above the optical fiber braided layer.
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| CN202010273746.5A CN111371399B (en) | 2020-04-09 | 2020-04-09 | Optical fiber conduction solar photovoltaic power generation system |
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| CN202010273746.5A CN111371399B (en) | 2020-04-09 | 2020-04-09 | Optical fiber conduction solar photovoltaic power generation system |
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