CN113890481A - Solar double-frequency-division light energy step power generation device and system - Google Patents
Solar double-frequency-division light energy step power generation device and system Download PDFInfo
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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
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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
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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
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- H02S20/10—Supporting structures directly fixed to the ground
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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
- H02S20/00—Supporting structures for PV modules
- H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
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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
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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
- H02S40/40—Thermal components
- H02S40/42—Cooling means
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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
- H02S40/40—Thermal components
- H02S40/42—Cooling means
- H02S40/425—Cooling means using a gaseous or a liquid coolant, e.g. air flow ventilation, water circulation
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
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Abstract
The invention discloses a solar double-frequency-division light energy stepped power generation device and system. The device utilizes short wave energy in solar spectrum through a primary photovoltaic module based on the concept of full-spectrum frequency division utilization of solar energy, and reflects unavailable radiation; the secondary photovoltaic module receives the primary reflected radiation and performs primary condensation, generates power by using radiation of a middle near infrared band and reflects residual light which cannot be utilized; the three-stage residual light converging and re-radiating power generation module receives residual light and further condenses the residual light, and performs spectrum adjustment and re-power generation through the absorption radiation combination body. The whole system is formed by arranging a plurality of devices in a large-scale array mode, the gaps in the array are fully utilized while solar full-spectrum efficient power generation is realized, and the utilization rate of the land and the photovoltaic power generation amount of the unit land area are improved.
Description
Technical Field
The invention belongs to the technical field of new energy utilization, and particularly relates to a solar double-frequency-division light energy cascade power generation device and system.
Background
The environmental pollution problem caused by the traditional fossil energy is increasingly severe, and the fossil fuel is in potential energy shortage crisis, thereby bringing great pressure to human society. Wherein CO is used as2The problem of climate change caused by the emission of greenhouse gases is represented, so that governments all over the country increase the strength of carbon reduction plans. Solar energy is used as a green renewable energy source, and has rich resources and no pollution; the solar power generation can realize zero carbon emission, and can perfectly solve the current energy pollution problem and potential energy crisis.
Photovoltaic technology represented by silicon cells can realize direct solar power generation. On one hand, the silicon cell can only respond to partial short wave bands of the solar spectrum, and the radiant energy of the rest wave bands can not be converted into electric energy, so that the silicon cell is heated to further influence the photoelectric conversion efficiency; on the other hand, the radiation energy of the wave band which can not be converted by the silicon cell occupies a considerable proportion of the solar radiation energy, so that a great deal of energy is wasted. Therefore, based on the thermodynamic principle, the gradient order conversion of solar energy is realized from the perspective of energy quality matching, and the method is a core and key problem for realizing the efficient utilization of solar energy.
Meanwhile, when the photovoltaic array is arranged in the existing photovoltaic power plant, on one hand, the photovoltaic cell panel is generally placed according to a certain proper inclination angle in order to maximize the annual total radiant quantity on the inclined plane of the photovoltaic cell panel. Taking a certain distributed photovoltaic power station in Gansu as an example, the angle is generally about 30 degrees. On the other hand, in order to avoid the influence of the previous row of photovoltaic panels on the lighting of the next row of photovoltaic panels to the maximum extent, when the photovoltaic array is arranged, a proper gap is always kept between the two rows of photovoltaic panels. However, since this part of the void cannot directly participate in photovoltaic power generation, in large-scale photovoltaic practice, this inevitably results in inefficient use of land area.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a solar dual-frequency-division light energy cascade power generation device and system, which realize high-efficiency solar power generation by orderly photoelectric conversion of solar energy cascade and improve the photovoltaic power generation capacity of unit land area by reasonable arrangement.
In order to achieve the above purpose, the invention adopts the technical scheme that:
the invention firstly provides a solar double-frequency-division light energy stepped power generation device which comprises a primary photovoltaic module, a secondary photovoltaic module and a tertiary residual light convergence reradiation power generation module;
the primary photovoltaic module comprises a primary frequency divider and a primary photovoltaic cell; the primary frequency divider is vertically arranged, the 300-plus-900 nm short-wave radiation is transmitted, the sunlight of other wave bands is reflected, and the primary photovoltaic cell absorbs the 300-plus-900 nm short-wave radiation transmitted by the primary frequency divider;
the secondary photovoltaic module comprises a first condenser, a secondary frequency divider and a secondary photovoltaic cell; the first condenser is used for converging sunlight reflected by the first-stage frequency divider, and the second-stage frequency divider is vertically arranged on a light path condensed by the first condenser, transmits near-infrared radiation in the range of 800nm-1800nm, and reflects radiation with wave bands lower than 800nm and higher than 1800 nm; the secondary photovoltaic cell absorbs the near-infrared radiation in the range of 800nm-1800nm transmitted by the secondary frequency divider;
the third-stage residual light converging and reradiating power generation module comprises a second condenser, an absorption radiation assembly and a third-stage photovoltaic cell, wherein the second condenser is used for converging radiation reflected by the second-stage frequency divider and is symmetrically arranged with the second-stage photovoltaic cell about the second-stage frequency divider; the second condenser, the radiation absorption assembly and the third-stage photovoltaic cell are parallel to each other, the absorption surface of the radiation absorption assembly faces the second condenser, and the emission surface faces the third-stage photovoltaic cell.
As the preferred scheme of the invention, the first-stage frequency divider adopts selective transmission glass; the primary photovoltaic cell adopts a silicon cell, the inclination angle of the silicon cell is adjustable, and the angle of the primary photovoltaic cell is adjusted according to the incident light path of 300-900nm short wave radiation so that the incident light path is perpendicular to the primary photovoltaic cell.
As a preferable scheme of the invention, the first condenser preferentially uses a Fresnel condenser lens, and the focal length is slightly larger than the length of the primary photovoltaic cell. The second-stage frequency divider adopts a film infrared filter, can transmit near infrared radiation in the range of 800nm-1800nm and reflect radiation in other spectral ranges. The secondary photovoltaic cell adopts a gallium antimonide photovoltaic cell which can respond to solar radiation below 1800 nm.
As a preferred scheme of the invention, the secondary photovoltaic cell adopts a gallium antimonide photovoltaic cell, and is arranged in front of the focus of the first condenser and parallel to the first condenser.
As a preferred scheme of the invention, the second condenser adopts a fresnel lens; the radiation absorbing assembly substrate is made of tungsten, and the absorbing surface is made of CuO-CuAlO2The emission surface of the composite spectrum selective absorption coating adopts a metal oxide multilayer structure; the three-level photovoltaic cell adopts an indium arsenide cell, and can effectively utilize radiation in a wave band below 3400 nm.
As a preferred scheme of the invention, cooling channels are arranged on the back of the primary photovoltaic cell, the back of the secondary photovoltaic cell and the back of the tertiary photovoltaic cell, the cooling channels are made of aluminum, and the cooling of the photovoltaic cells can be realized through water cooling and other modes.
The invention also provides a solar dual-frequency-division optical energy cascade power generation system which comprises a plurality of dual-frequency-division optical energy cascade power generation devices and a plurality of device brackets; the solar double-frequency-division light energy step power generation device is arranged close to the device bracket in a periodical gapless manner.
Preferably, in the spatial position, the primary photovoltaic cell is arranged above the secondary photovoltaic cell of another adjacent double-frequency-division optical energy cascade power generation device; the third-stage residual light converging and reradiating power generation module is arranged below the first condenser; the second-stage frequency divider is vertically arranged on a light path condensed by the first condenser; the first-stage photovoltaic cell and the first condenser are respectively arranged on the transmission and reflection light paths at two sides of the first-stage frequency divider; the secondary photovoltaic cell and the tertiary afterglow converging reradiation power generation module are respectively arranged on the transmission and reflection light paths at two sides of the secondary frequency divider.
Preferably, the first-stage frequency dividers of each double-frequency-division optical energy cascade power generation device are arranged in parallel and at the same height with each other at a set height.
The main advantages of the invention are:
the step sequential conversion of the solar radiation energy is realized through two times of frequency division, and the thermodynamic principle is basically met. The low-grade residual light after the frequency division is performed twice is subjected to residual light convergence and then radiation regulation, three-level photovoltaic power generation is realized, the traditional heat energy conversion technologies such as thermodynamic cycle and the like are not introduced, the volume of the system can be effectively reduced, the direct current output is realized, and devices such as an energy storage battery and the like can be conveniently connected.
The residual light energy after the frequency division for two times is small, the temperature generated after the secondary light condensation and heat collection is low, the light condensation temperature of the system is not more than 1000 ℃, the radiation heat loss of the absorber is reduced, the irreversible loss in the light condensation and heat collection process is reduced, the three-level photovoltaic adopts an indium arsenide (InAs) battery with a long forbidden band, the radiation below 3400nm can be responded, and the heat radiation energy generated after the residual light condensation is effectively utilized. The whole system conforms to the principle of orderly energy release in the aspect of thermodynamics.
On the other hand, the secondary photovoltaic module and the tertiary residual light converging and reradiating power generation module are arranged in the gap of the silicon battery array, and on the basis of the existing photovoltaic array arrangement form, nearly all land areas can participate in photovoltaic power generation, so that the land utilization rate and the photovoltaic power generation amount per unit area are effectively improved.
Drawings
FIG. 1 is a schematic diagram of the system architecture of the present invention.
Fig. 2 is a schematic diagram of the system of the present invention.
Fig. 3 is a schematic diagram of the device array arrangement of the present invention.
Fig. 1 and 2 can be understood with mutual reference.
In the drawings: 1. a first-stage frequency divider; 2. a primary photovoltaic cell; 3. a first condenser; 4. a secondary frequency divider; 5. a secondary photovoltaic cell; 6. a second condenser; 7. a radiation-absorbing assembly; 8. a tertiary photovoltaic cell; 9. A primary photovoltaic cell cooling channel; 10. a secondary photovoltaic cell cooling channel; 11. a tertiary photovoltaic cell cooling channel; 12. a first support surface; 13. a second support surface; 14. a third support surface; 14. a fourth support surface; . 001. A solar radiation optical path; 002. a first-stage frequency divider transmission optical path; 003. a first-level frequency divider reflection light path (a second-level photovoltaic module incident light path); 004. a secondary frequency divider transmission optical path; 005. and the second-stage frequency divider reflects a light path (a third-stage residual light converging and reradiating power generation module incident light path).
Detailed description of the invention
The invention will be further described with reference to the embodiments shown in figures 1, 2 and 3. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 and 2, the solar dual-frequency-division optical energy stepped power generation device of the present invention includes a primary photovoltaic module, a secondary photovoltaic module, and a tertiary residual light converging re-radiation power generation module, which are sequentially disposed according to a radiation light path.
The primary photovoltaic module comprises a primary frequency divider 1, a primary photovoltaic cell 2 and a primary photovoltaic cell cooling channel 9. The primary frequency divider 1 is vertically arranged, so that a sunlight incident light path 001 and a reflection light path 003 are horizontally symmetrical; the primary photovoltaic cell panel 2 is vertically arranged with the primary frequency divider transmission light path 002; the primary frequency divider 1 is connected with a primary photovoltaic cell 2; the primary photovoltaic cell cooling channel 9 is arranged at the bottom of the primary photovoltaic cell 2. The first-stage frequency divider 1 preferentially and selectively transmits glass, can transmit sunlight in a wave band range of 300nm-900nm, reflects solar radiation of other wave bands, and has the advantage of low cost. The primary photovoltaic cell 2 can adopt a silicon cell and can respond to solar radiation below 1000 nm.
The secondary photovoltaic module comprises a first condenser 3, a secondary frequency divider 4, a secondary photovoltaic cell 5 and a secondary photovoltaic cell cooling channel 10. The first condenser 3 and the first-stage photovoltaic cell 2 are symmetrically arranged around the vertical direction, so that the first-stage frequency division reflection light path 003 is vertical to the first-stage frequency division reflection light path; the secondary frequency divider 4 is arranged below the primary photovoltaic cell 2 and is vertically arranged, so that the secondary frequency dividing transmission light path 004 and the reflection light path 005 are symmetrical about the vertical direction while the bottom space is fully utilized; the secondary photovoltaic cell 5 is on and perpendicular to the secondary frequency division transmission light path 004; the secondary photovoltaic cell cooling channel 10 is arranged at the bottom of the secondary photovoltaic cell 5.
The first condenser 3 preferably adopts a Fresnel condensing lens, and the purpose is to reduce the area of the secondary photovoltaic cell 5. The second-stage frequency divider 4 preferably adopts a film infrared filter, can transmit near infrared radiation in the range of 800nm-1800nm, and reflects infrared radiation below 800nm and above 1800 nm. And the filtering wave band is moderate, which is beneficial to the processing and manufacturing of the optical filter. The secondary photovoltaic cell 5 is preferably a gallium antimonide photovoltaic cell which is responsive to solar radiation below 1800 nm. Gallium antimonide cells are more technically mature in infrared radiation photovoltaic cells.
The three-stage residual light converging and re-radiating power generation module comprises a second condenser 6, an absorption radiation assembly 7, a three-stage photovoltaic cell 8 and a cooling channel 11 arranged at the bottom of the photovoltaic cell. Along the secondary frequency-division reflection light path 005, the second condenser 6, the radiation-absorbing assembly 7 and the third-stage photovoltaic cell 8 are sequentially arranged and are all perpendicular to the secondary frequency-division reflection light path 005. The second concentrator 6 and the secondary photovoltaic cell 5 are arranged substantially symmetrically with respect to the secondary divider 4. One surface of the absorption radiator 7 facing the secondary frequency division reflection light path 005 is an absorption surface, and one surface facing the tertiary photovoltaic cell 8 is a radiation surface.
SaidThe second condenser 6 preferably uses a fresnel condenser lens for the purpose of secondary condensing, heating and absorbing the radiation combination 7. The radiation absorbing assembly 7 is made of tungsten as a base material, and CuO-CuAlO is adopted as an absorbing surface2The composite spectrum selective absorption coating has low cost, can realize the absorptivity of more than 0.8 and simultaneously maintain the emissivity of about 0.3; the radiation surface can be aluminum oxide/hafnium oxide composite coating (AlO)2/HfO2) Selective radiation can be emitted for the forbidden bandwidth of the tertiary photovoltaic cell 8. Because the energy of the frequency division residual light is reduced, the heat collection temperature after heat re-accumulation can be kept below 1000 ℃, and the outward radiation loss of the radiation absorption assembly 7 can be reduced. In order to match the light condensation temperature, the three-level photovoltaic cell 8 preferably adopts an InAs cell, and can effectively utilize the spectral radiation below 3400 nm. The areas of the concentrated radiation absorbing assembly 7 and the three-level photovoltaic cell 8 are remarkably reduced, so that the cost can be reduced to a certain extent.
The bottoms of the photovoltaic cells 2, 5 and 8 are respectively provided with a cooling channel 9, 10 and 11 which are made of aluminum, and the cooling channels are of pore channel structures and can cool the photovoltaic cells in a water cooling mode.
As shown in fig. 3, the solar dual-frequency-division optical energy cascade power generation system of the present invention includes a plurality of dual-frequency-division optical energy cascade power generation devices shown in fig. 1; the solar dual-frequency-division light energy step power generation device is arranged in close proximity to each other in a periodic gapless mode, so that the gaps in the array are fully utilized while solar full-spectrum efficient power generation is realized, and the utilization rate of the land and the photovoltaic power generation capacity of the unit land area are improved.
The system also comprises a plurality of brackets with the same structure, as shown in fig. 3, the upper half part of each bracket is of an L-shaped surface structure consisting of a first supporting surface 12 and a second supporting surface 13, and the top end of the first supporting surface 12 and the bottom end of the second supporting surface 13 are respectively connected with the upper end and the lower end of the first-stage frequency divider 1 which are vertically arranged to form a triangular structure; the lower half part of the bracket comprises a third supporting surface 14 and a fourth supporting surface 15 which are vertically arranged and used for supporting a triangular structure, wherein the top end of the third supporting surface 14 is respectively connected with the bottom end of the first supporting surface 12 and the top end 13 of the second supporting surface, and the top end of the fourth supporting surface 15 is connected with the bottom end of the second supporting surface 13.
As shown in fig. 3, in the same support, a primary photovoltaic module of one of the solar dual-frequency-division optical energy stepped power generation devices is arranged on the L-shaped surface structure, and a secondary frequency divider and a secondary photovoltaic cell of another adjacent device are arranged between the third supporting surface 14 and the fourth supporting surface 15. One end of the primary condenser 3 is arranged at the top end of the third supporting surface of one bracket, and the other end thereof is arranged at the top end of the fourth supporting surface of the adjacent bracket. And a second condenser, an absorption radiation assembly and a third-stage photovoltaic cell are arranged between the third supporting surface of one bracket and the fourth supporting surface of the adjacent bracket.
The bracket is preferably made of aluminum alloy, and has the advantages of low price, corrosion resistance and strong bearing capacity; the first supporting surface, the second supporting surface and the fourth supporting surface are all sealed and light-proof, namely, two sides of the surfaces are light-proof. The third supporting surface is a light-transmitting surface (shown by dotted lines in fig. 3), and is composed of a plurality of aluminum alloy supporting rods which are located around and form a supporting structure.
The integrated cascade power generation device of solar double frequency division and residual light convergence reradiation is particularly designed by firstly carrying out primary frequency division on the full spectrum of sunlight, then carrying out secondary frequency division on the primary light-gathering of the rest spectrum and then carrying out secondary light-gathering utilization on the residual light. Compared with a design scheme of condensing light and dividing frequency, the method can reduce radiation energy loss caused by condensing light and heating. Referring to fig. 3, the system is arranged in a sequential array. In fig. 3, the primary photovoltaic cells are arranged alternately with appropriate gaps, which is a common array arrangement for large-scale arrangement of photovoltaic cell panels, and is intended to ensure the lighting of each photovoltaic cell panel. The specific working process of the whole array device is as follows:
The whole system utilizes the components such as the first-stage frequency divider 1, the second-stage frequency divider 4, the first-stage photovoltaic cell 2, the second-stage photovoltaic cell 5, the first condenser 3 and the like to realize primary and secondary frequency division of the solar spectrum. The second condenser 6, the absorption radiation assembly 7, the third-level photovoltaic cell 8 and other components form a residual light convergence re-radiation photovoltaic power generation module, so that full-spectrum cascade power generation of sunlight is completed, and the principle of thermodynamic energy ordered release is fundamentally met. On the premise of the existence of inevitable large-area gaps in the existing large-scale photovoltaic array, the device disclosed by the invention fully utilizes the partial gaps and the bottom space to arrange the secondary photovoltaic module and the tertiary afterglow converging reradiation power generation module, realizes the efficient utilization of the full spectrum stepped frequency division of sunlight and the efficient utilization of the land, and is reasonable and feasible in space arrangement planning.
Claims (10)
1. The utility model provides a two frequency-splitting light energy step power generation facility of solar energy which characterized in that: the system comprises a primary photovoltaic module, a secondary photovoltaic module and a tertiary residual light converging reradiation power generation module;
the primary photovoltaic module comprises a primary frequency divider and a primary photovoltaic cell; the primary frequency divider is vertically arranged, the 300-plus-900 nm short-wave radiation is transmitted, the sunlight of other wave bands is reflected, and the primary photovoltaic cell absorbs the 300-plus-900 nm short-wave radiation transmitted by the primary frequency divider;
the secondary photovoltaic module comprises a first condenser, a secondary frequency divider and a secondary photovoltaic cell; the first condenser is used for converging sunlight reflected by the first-stage frequency divider, and the second-stage frequency divider is vertically arranged on a light path condensed by the first condenser, transmits near-infrared radiation in the range of 800nm-1800nm, and reflects radiation with wave bands lower than 800nm and higher than 1800 nm; the secondary photovoltaic cell absorbs the near-infrared radiation in the range of 800nm-1800nm transmitted by the secondary frequency divider;
the third-stage residual light converging and reradiating power generation module comprises a second condenser, an absorption radiation assembly and a third-stage photovoltaic cell, wherein the second condenser is used for converging radiation reflected by the second-stage frequency divider and is symmetrically arranged with the second-stage photovoltaic cell about the second-stage frequency divider; the second condenser, the radiation absorption assembly and the third-stage photovoltaic cell are parallel to each other, the absorption surface of the radiation absorption assembly faces the second condenser, and the emission surface faces the third-stage photovoltaic cell.
2. The solar dual-frequency-division optical energy cascade power generation device according to claim 1, wherein: the first-stage frequency divider adopts selective transmission glass; the primary photovoltaic cell adopts a silicon cell, the inclination angle of the silicon cell is adjustable, and the angle of the primary photovoltaic cell is adjusted according to the incident light path of 300-900nm short wave radiation so that the incident light path is perpendicular to the primary photovoltaic cell.
3. The solar dual-frequency-division optical energy cascade power generation device according to claim 1, wherein: the first condenser adopts a Fresnel lens, the focal length of the first condenser is slightly larger than the length of the first-stage photovoltaic cell, and the first-stage condenser and the first-stage photovoltaic cell are symmetrically arranged in the vertical direction.
4. The solar dual-frequency-division optical energy cascade power generation device according to claim 1, wherein: the second-stage frequency divider adopts a thin film infrared filter.
5. The solar dual-frequency-division optical energy cascade power generation device according to claim 1, wherein: the secondary photovoltaic cell is a gallium antimonide photovoltaic cell and is arranged in front of the focus of the first condenser and parallel to the first condenser.
6. The solar dual-frequency-division optical energy cascade power generation device according to claim 1, wherein: the second condenser adopts a Fresnel lens; the radiation absorbing assembly substrate is made of tungsten, and the absorbing surface is made of CuO-CuAlO2The emission surface of the composite spectrum selective absorption coating adopts a metal oxide multilayer structure; the three-level photovoltaic cell adopts an indium arsenide cell.
7. The solar dual-frequency-division optical energy cascade power generation device according to claim 1, wherein: the back of the first-level photovoltaic cell, the back of the second-level photovoltaic cell and the back of the third-level photovoltaic cell are all provided with cooling channels, and the cooling channels are made of aluminum.
8. A solar dual-frequency-division optical energy cascade power generation system, which comprises a plurality of dual-frequency-division optical energy cascade power generation devices as claimed in any one of claims 1 to 7 and a plurality of device brackets; the solar double-frequency-division light energy step power generation device is arranged close to the device bracket in a periodical gapless manner.
9. The solar dual-frequency-division optical energy cascade power generation system of claim 8, wherein, in a spatial position, the primary photovoltaic cell is arranged above the secondary photovoltaic cell of another adjacent dual-frequency-division optical energy cascade power generation device; the third-stage residual light converging and reradiating power generation module is arranged below the first condenser; the second-stage frequency divider is vertically arranged on a light path condensed by the first condenser; the first-stage photovoltaic cell and the first condenser are respectively arranged on the transmission and reflection light paths at two sides of the first-stage frequency divider; the secondary photovoltaic cell and the tertiary afterglow converging reradiation power generation module are respectively arranged on the transmission and reflection light paths at two sides of the secondary frequency divider.
10. The solar dual-frequency-division optical energy cascade power generation system of claim 8, wherein the primary frequency dividers of each dual-frequency-division optical energy cascade power generation device are arranged in parallel and at equal height, the primary frequency dividers and the secondary frequency dividers are arranged in parallel, and the mounting height of the primary frequency dividers is higher than that of the secondary frequency dividers.
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