CN109654750B - Staggered solar light condensation system - Google Patents
Staggered solar light condensation system Download PDFInfo
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- CN109654750B CN109654750B CN201811618306.8A CN201811618306A CN109654750B CN 109654750 B CN109654750 B CN 109654750B CN 201811618306 A CN201811618306 A CN 201811618306A CN 109654750 B CN109654750 B CN 109654750B
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- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002356 single layer Substances 0.000 description 3
- 108010010803 Gelatin Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- SOCTUWSJJQCPFX-UHFFFAOYSA-N dichromate(2-) Chemical compound [O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O SOCTUWSJJQCPFX-UHFFFAOYSA-N 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
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- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 238000001093 holography Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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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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- 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
Abstract
The application belongs to the technical field of solar energy collection, and particularly relates to a staggered solar energy concentrating system. Because the light-gathering angle of the solar light-gathering system is small, a one-dimensional or two-dimensional sunlight automatic tracking system is generally configured. Although it is not difficult to realize tracking by sophisticated automatic control techniques, the cost of the associated tracking system increases and the failure rate is high. The existing light-gathering system has low light energy utilization rate. The application provides an alternating expression solar energy condensing system, includes a plurality of spotlight units, spotlight unit includes spotlight component and light receiving assembly. The microstructure holographic diffraction pattern manufactured by the holographic technology has the characteristics of high efficiency, light weight, miniaturization, arraying, integration, reproducibility and low price, and can realize the effect of light condensation at a large angle, thereby avoiding the cost increase and high failure rate brought by a tracking system.
Description
Technical Field
The application belongs to the technical field of solar energy collection, and particularly relates to a staggered solar energy concentrating system.
Background
Solar energy is a renewable energy source, has the advantages of universality, cleanability in development and utilization and the like, and has become an effective way for solving the problems of energy shortage, greenhouse effect, environmental pollution and the like. In recent years, with the continuous development of material science and automation technology, people develop various forms of light condensing systems, and the light condensing photovoltaic solar energy combines the traditional solar photoelectric technology with a large-scale heat condensing solar power plant, so that the solar energy production can be greatly strengthened. Concentrating solar (CPV) technology amplifies received solar energy by hundreds of thousands of times through a lens or mirror and then focuses the amplified energy onto a small photovoltaic cell with extremely high efficiency. By amplifying the solar energy, this technique effectively reduces the amount of semiconductor material used in the photovoltaic cell.
However, since the light-gathering angle of the solar light-gathering system is small, a one-dimensional or two-dimensional automatic sunlight tracking system is generally configured. Although it is not difficult to realize tracking by sophisticated automatic control techniques, the cost of the associated tracking system increases and the failure rate is high. The existing light-gathering system has low light energy utilization rate.
Disclosure of Invention
1. Technical problem to be solved
Because the light-gathering angle of the solar light-gathering system is small, a one-dimensional or two-dimensional sunlight automatic tracking system is generally configured. Although it is not difficult to realize tracking by sophisticated automatic control techniques, the cost of the associated tracking system increases and the failure rate is high. The application provides a staggered solar concentrating system, which solves the problem that the light energy utilization rate of the existing concentrating system is low.
2. Technical scheme
In order to achieve the above object, the present application provides an interlaced solar concentrating system, which includes a plurality of concentrating units, where each concentrating unit includes a concentrating component and a light receiving component;
the light condensation component comprises a first volume holographic light condensation plate and a second volume holographic light condensation plate, wherein a plurality of first volume holographic polarizing plates are sequentially arranged on one side of the first volume holographic light condensation plate, and a plurality of second volume holographic polarizing plates are sequentially arranged on one side of the second volume holographic light condensation plate;
the light receiving assembly comprises a first light receiver, a second light receiver and a third light receiver, the first light receiver is arranged on the other side of the first integrated holographic condensing plate, the second light receiver is arranged between the first integrated holographic condensing plate and the second integrated holographic condensing plate, the second light receiver is arranged on the other side of the first integrated holographic condensing plate, and the third light receiver is arranged on the other side of the second integrated holographic condensing plate.
Optionally, the second light receiver is disposed at a diffraction focus position of the first volume holographic light gathering plate and the second volume holographic light gathering plate.
Optionally, the first bulk holographic polarizing plate has 2 layers or more than 2 layers, and the second bulk holographic polarizing plate has 2 layers or more than 2 layers.
Optionally, the first volume holographic light gathering plate and the second volume holographic light gathering plate are arranged side by side.
Optionally, the plurality of first volume holographic polarizing plates, the first volume holographic light gathering plate and the light receiving assembly are arranged in sequence from top to bottom, and the plurality of second volume holographic polarizing plates, the second volume holographic light gathering plate and the light receiving assembly are arranged in sequence from top to bottom.
Optionally, the first light receiver is an optical energy receiver, a photoelectric receiver, a photo-thermal receiver, or a light guide, the second light receiver is an optical energy receiver, a photoelectric receiver, a photo-thermal receiver, or a light guide, and the third light receiver is an optical energy receiver, a photoelectric receiver, a photo-thermal receiver, or a light guide.
3. Advantageous effects
Compared with the prior art, the staggered solar concentrating system provided by the application has the beneficial effects that:
the application provides an alternating expression solar energy condensing system is through setting up spotlight component and light receiving element, adopts holographic technique to make the holographic diffraction pattern of microstructure, has high efficiency, lightweight, miniaturized, array ization, integrates, can duplicate, low price's characteristic to can realize the effect of a wide-angle spotlight, thereby the cost increase and the high fault rate that tracking system brought have been removed from. By performing the staggered interference recording on the working range of the single-layer holographic plate, the diffraction reproduction light of the volume holographic plate can be focused on the light receiving component in the middle, meanwhile, the light receiving component can receive partial directly-irradiated sunlight, and the overall optical efficiency is improved compared with the condition that each layer only records one side. The staggered solar concentrating system is low in cost, simple in structure and easy to replace, and therefore large-area popularization and use are facilitated.
Drawings
FIG. 1 is a schematic view of an interlaced solar concentrating system according to the present application;
FIG. 2 is a schematic view of the range of light received by a second optical receiver of the present application;
FIG. 3 is a schematic diagram of a first light intensity output of the interlaced solar concentrating system over its operating angular range;
FIG. 4 is a schematic diagram of a second light intensity output of the interlaced solar concentrating system over its range of operating angles;
in the figure: 1-first volume holographic light gathering plate, 2-second volume holographic light gathering plate, 3-first volume holographic polarizing plate, 4-second volume holographic polarizing plate, 5-first light receiver, 6-second light receiver and 7-third light receiver.
Detailed Description
Hereinafter, specific embodiments of the present application will be described in detail with reference to the accompanying drawings, and it will be apparent to those skilled in the art from this detailed description that the present application can be practiced. Features from different embodiments may be combined to yield new embodiments, or certain features may be substituted for certain embodiments to yield yet further preferred embodiments, without departing from the principles of the present application.
Bragg diffraction is selective not only for direction but also for wavelength. Lattice diffraction can be classified according to the type of lattice and the monochromaticity of the light source. According to the lattice classification, one is single crystal bragg diffraction and one is polycrystalline bragg diffraction.
The holography technique is a technique for realizing recording and reproduction of a real three-dimensional image. This image is called a hologram. Unlike other three-dimensional "images," holograms provide "parallax". The presence of parallax allows the viewer to view different aspects of the image by moving back and forth, left and right, and up and down as if there were a real object. A hologram is a picture formed by recording a subject on a high-resolution hologram film using a panoramic camera with a laser light source. In the form of interference fringes. By using the same laser irradiation, virtual and real two stereo images of the original scene can appear in front of and behind the film, and the visual angles are different, and the seen images are also different. A hologram is a three-dimensional image that is very different from a conventional photograph. Conventional photographs present a true physical image, while holograms contain information about the size, shape, brightness, and contrast of the recorded object. This information is stored in a very small but complex interference pattern. This interference pattern is generated by a laser.
Referring to fig. 1 to 4, the application provides a staggered solar concentrating system, which includes a plurality of concentrating units, wherein each concentrating unit includes a concentrating component and a light receiving component;
the light condensation component comprises a first volume holographic light condensation plate 1 and a second volume holographic light condensation plate 2, wherein a plurality of first volume holographic polarizing plates 3 are sequentially arranged on one side of the first volume holographic light condensation plate 1, and a plurality of second volume holographic polarizing plates 4 are sequentially arranged on one side of the second volume holographic light condensation plate 2;
the light receiving component comprises a first light receiver 5, a second light receiver 6 and a third light receiver 7, the first light receiver 5 is arranged on the other side of the first integrated holographic light gathering plate 1, the second light receiver 6 is arranged between the first integrated holographic light gathering plate 1 and the second integrated holographic light gathering plate 2, the second light receiver 6 is arranged on the other side of the first integrated holographic light gathering plate 1, and the third light receiver 7 is arranged on the other side of the second integrated holographic light gathering plate 2.
The first holographic polarizing plate 3 and the second holographic polarizing plate 4 only diffract and deflect light rays with specific angles, and finally the first holographic condensing plate 1 and the second holographic condensing plate 2 diffract and condense the light rays; the working range of the single-layer holographic plate is subjected to staggered interference recording, so that the diffraction reconstruction light of the volume holographic plate can be focused on the light receiving component in the middle, meanwhile, the light receiving component can receive partial sunlight which is directly irradiated, due to the Bragg diffraction phenomenon of the volume holographic structure, each layer of holographic structure can only diffract light rays at a specific angle, and light rays at other angles directly penetrate through the holographic structure, so that the effect of large-angle tracking-free condensation is realized; the volume holographic plate is a three-dimensional volume holographic structure, the manufacturing material is photopolymer or gelatin dichromate, and the manufacturing method is laser interference. Every two multilayer volume holographic plates connected in parallel and a light receiving component for receiving light in the middle comprise a first light receiver 5, a second light receiver 6 and a third light receiver 7 to form a light condensing unit, except that the lowest layer is a volume holographic light condensing plate, other layers are volume holographic polarizing plates which are used for deflecting light rays at different angles, and finally the light rays are diffracted and focused by the volume holographic light condensing plate and then utilized, so that the integral optical efficiency is improved.
The number of the light-gathering units is also set according to actual requirements.
Further, the second light receiver 6 is disposed at the diffraction focus of the first volume hologram light collecting plate 1 and the second volume hologram light collecting plate 2.
As shown in fig. 2, θ1And theta2The diffraction angles of the short-wave and long-wave light rays, respectively, which satisfy the geometrical conditions shown in the figure.
Further, the first bulk holographic polarizing plate 3 has 2 or more layers, and the second bulk holographic polarizing plate 4 has 2 or more layers.
The specific number of layers depends on the actual design, and the overall optical efficiency is reduced as the number of layers increases. Wherein, FIG. 3 is a schematic diagram of light intensity output of 2 layers; FIG. 4 is a graph of the light intensity output for 3 layers.
Further, the first volume holographic optical collecting plate 1 and the second volume holographic optical collecting plate 2 are arranged side by side.
Further, the plurality of first volume holographic polarizing plates 3, the first volume holographic light gathering plate 1 and the light receiving assembly are arranged in sequence from top to bottom, and the plurality of second volume holographic polarizing plates 4, the second volume holographic light gathering plate 2 and the light receiving assembly are arranged in sequence from top to bottom.
Here, the direction in which light is incident is referred to as upward.
Further, the first light receiver 5 is a light energy receiver, a photoelectric receiver, a photo-thermal receiver or a light guide, the second light receiver 6 is a light energy receiver, a photoelectric receiver, a photo-thermal receiver or a light guide, and the third light receiver 7 is a light energy receiver, a photoelectric receiver, a photo-thermal receiver or a light guide.
The application provides an alternating expression solar energy condensing system is through setting up spotlight component and light receiving element, adopts holographic technique to make the holographic diffraction pattern of microstructure, has high efficiency, lightweight, miniaturized, array ization, integrates, can duplicate, low price's characteristic to can realize the effect of a wide-angle spotlight, thereby the cost increase and the high fault rate that tracking system brought have been removed from. By performing the staggered interference recording on the working range of the single-layer holographic plate, the diffraction reproduction light of the volume holographic plate can be focused on the light receiving component in the middle, meanwhile, the light receiving component can receive partial directly-irradiated sunlight, and the overall optical efficiency is improved compared with the condition that each layer only records one side. The staggered solar concentrating system is low in cost, simple in structure and easy to replace, and therefore large-area popularization and use are facilitated.
Although the present application has been described above with reference to specific embodiments, those skilled in the art will recognize that many changes may be made in the configuration and details of the present application within the principles and scope of the present application. The scope of protection of the application is determined by the appended claims, and all changes that come within the meaning and range of equivalency of the technical features are intended to be embraced therein.
Claims (6)
1. An interlaced solar concentrating system, comprising: the device comprises a plurality of light gathering units, wherein each light gathering unit comprises a light gathering component and a light receiving component;
the light condensation component comprises a first volume holographic light condensation plate (1) and a second volume holographic light condensation plate (2), wherein a plurality of first volume holographic polarizing plates (3) are sequentially arranged on one side of the first volume holographic light condensation plate (1), and a plurality of second volume holographic polarizing plates (4) are sequentially arranged on one side of the second volume holographic light condensation plate (2);
the light receiving assembly comprises a first light receiver (5), a second light receiver (6) and a third light receiver (7), the first light receiver (5) is arranged on the other side of the first holographic optical collecting plate (1), the second light receiver (6) is arranged between the first holographic optical collecting plate (1) and the second holographic optical collecting plate (2), the second light receiver (6) is arranged on the other side of the first holographic optical collecting plate (1), and the third light receiver (7) is arranged on the other side of the second holographic optical collecting plate (2).
2. The interlaced solar concentrating system of claim 1, wherein: the second light receiver (6) is arranged at the diffraction focusing positions of the first volume holographic light gathering plate (1) and the second volume holographic light gathering plate (2).
3. The interlaced solar concentrating system of claim 1, wherein: the first volume holographic polarizing plate (3) is 2 layers or more than 2 layers, and the second volume holographic polarizing plate (4) is 2 layers or more than 2 layers.
4. The interlaced solar concentrating system of claim 1, wherein: the first volume holographic light gathering plate (1) and the second volume holographic light gathering plate (2) are arranged side by side.
5. The interlaced solar concentrating system of claim 1, wherein: the plurality of first holographic polarizing plates (3), the first holographic light gathering plate (1) and the light receiving assembly are sequentially arranged from top to bottom, and the plurality of second holographic polarizing plates (4), the second holographic light gathering plate (2) and the light receiving assembly are sequentially arranged from top to bottom.
6. The interleaved solar concentrating system according to any one of claims 1 to 5 wherein: the first light receiver (5) is a light energy receiver, a photoelectric receiver, a photo-thermal receiver or a light guide device, the second light receiver (6) is a light energy receiver, a photoelectric receiver, a photo-thermal receiver or a light guide device, and the third light receiver (7) is a light energy receiver, a photoelectric receiver, a photo-thermal receiver or a light guide device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811618306.8A CN109654750B (en) | 2018-12-28 | 2018-12-28 | Staggered solar light condensation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811618306.8A CN109654750B (en) | 2018-12-28 | 2018-12-28 | Staggered solar light condensation system |
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| Publication Number | Publication Date |
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| CN109654750A CN109654750A (en) | 2019-04-19 |
| CN109654750B true CN109654750B (en) | 2020-04-17 |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8307822B2 (en) * | 2008-10-06 | 2012-11-13 | Hewlett-Packard Development Company, L.P. | High efficiency solar energy devices and methods |
| US9105783B2 (en) * | 2009-01-26 | 2015-08-11 | The Aerospace Corporation | Holographic solar concentrator |
| US8251563B2 (en) * | 2009-05-29 | 2012-08-28 | Sharp Kabushiki Kaisha | Polarized diffractive backlight |
| CN102544171A (en) * | 2010-12-21 | 2012-07-04 | 财团法人工业技术研究院 | Multi-band light collection and energy conversion module |
| CN108563007A (en) * | 2017-12-13 | 2018-09-21 | 清华大学深圳研究生院 | A kind of multilayer volume holographic uniform focus system |
| CN108633534A (en) * | 2018-06-02 | 2018-10-12 | 福建农建发展有限公司 | A kind of the sunlight volume holographic optical splitter and light-dimming method of plant factor |
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