CN112050485B - Solar cogeneration device - Google Patents

Solar cogeneration device Download PDF

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Publication number
CN112050485B
CN112050485B CN202010878287.3A CN202010878287A CN112050485B CN 112050485 B CN112050485 B CN 112050485B CN 202010878287 A CN202010878287 A CN 202010878287A CN 112050485 B CN112050485 B CN 112050485B
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module
light
light splitting
modules
power generation
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CN112050485A (en
Inventor
陈木生
黄金
胡艳鑫
陈泽雄
盘雪纯
洪悦铭
董书发
郭俊铭
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Guangdong University of Technology
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Guangdong University of Technology
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
    • F24S23/30—Arrangements for concentrating solar-rays for solar heat collectors with lenses
    • F24S23/31—Arrangements for concentrating solar-rays for solar heat collectors with lenses having discontinuous faces, e.g. Fresnel lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S20/00—Solar heat collectors specially adapted for particular uses or environments
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
    • F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
    • F24S23/71—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with parabolic reflective surfaces
    • 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
    • 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
    • H02S40/44—Means to utilise heat energy, e.g. hybrid systems producing warm water and electricity at the same time
    • 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
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • 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
    • 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
    • Y02E10/60—Thermal-PV hybrids

Abstract

The invention relates to a solar cogeneration device, which comprises a light condensation module provided with a light condensation lens, a light splitting module, a photovoltaic power generation module and a heat collection module, wherein the light splitting module comprises a lens provided with a first light splitting surface and a second light splitting surface, both the first light splitting surface and the second light splitting surface are paraboloids, a focal line of a directional light splitter and a focal line of the light condensation lens are in the same straight line, one side of the directional light splitter, which is provided with the second light splitting surface, faces to the heat collection module, and one side of the directional light splitter, which is provided with the first light splitting surface, faces to the photovoltaic power generation module. The light splitting module can adjust the emission direction of the split light, the arrangement of the heat collection module and the photovoltaic power generation module is not restricted by the light splitting module, and the arrangement of each module in the device is easier as required; meanwhile, light split by the light splitting module can be transmitted in a collimating way without being diffused, the heat collecting module and the photovoltaic power generation module can receive more uniform light, and the energy utilization efficiency is higher.

Description

Solar cogeneration device
Technical Field
The invention relates to the technical field of solar energy utilization, in particular to a solar cogeneration device.
Background
With the problem of energy shortage becoming more and more prominent, people pay more and more attention to the development and utilization of solar energy. Among them, solar cells have been widely noticed and researched. However, due to the existence of the forbidden bandwidth, the solar cell can only use the solar radiation in a specific section for photovoltaic power generation, and the solar radiation in other sections is converted into heat energy, so that the surface temperature of the solar cell is increased, the output power of the solar cell is reduced, and even the solar cell is directly burned out and scrapped.
At present, researchers provide a solar cogeneration device based on a frequency division utilization technology, namely solar radiation in a section which cannot be directly utilized by a solar cell is firstly filtered through a frequency divider and converted into heat energy through a heat collection working medium, and solar radiation of other sections is projected onto the solar cell for photoelectric conversion. For example, chinese patent document having publication number "CN 205407659U" and publication number 2016, 7, month 27 discloses a solar distributed cogeneration energy system, which includes a condenser lens and a light splitter (i.e., a frequency divider) located below the condenser lens, wherein both sides below the condenser lens are respectively provided with a photovoltaic power generation module and a thermoelectric module, sunlight enters the light splitter via the condenser lens and is divided into two paths, and one path of light mainly includes visible light and a near-infrared light portion having a wavelength of 1.1 micron or less, and is incident to the photovoltaic power generation module to generate power; the other path of light is the residual waveband, mainly comprises far infrared and ultraviolet parts, and is totally incident to the hot end of the thermoelectric module and converted into heat energy.
However, the optical splitter in the above technical solution does not provide a specific structure, and does not disclose the working principle of the optical splitter, and can only be used for splitting sunlight into two paths, and cannot adjust the divergence degree and transmission distance of the two paths of light, so that the light reaching the photovoltaic power generation module and the thermoelectric module is divergent, and therefore the photovoltaic power generation module and the thermoelectric module can only be passively placed at a position close to the optical splitter, and meanwhile, the energy utilization rate of the whole system is low.
Disclosure of Invention
In order to solve the problems of inconvenient system arrangement and low energy utilization rate caused by the fact that the light path of the light splitter cannot be adjusted in the prior art, the invention provides the solar cogeneration device, which can adjust the light path of light emitted by the light splitter, is convenient to arrange and improves the energy utilization rate.
In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides a solar thermal energy cogeneration device, is including the spotlight module, beam splitting module, photovoltaic power generation module and the thermal-arrest module that are provided with condensing lens, beam splitting module is including the lens that is provided with first beam splitting surface and second beam splitting surface, first beam splitting surface with second beam splitting surface is the paraboloid, directional beam splitter's focal line with condensing lens's focal line is in same straight line, directional beam splitter is equipped with one side orientation on second beam splitting surface the thermal-arrest module, directional beam splitter is equipped with one side orientation on first beam splitting surface the photovoltaic power generation module.
In the above technical scheme, the condensing lens may be a linear fresnel lens, sunlight is emitted to the light splitting module after passing through the condensing lens, a first light splitting surface of the light splitting module reflects part of the sunlight to the photovoltaic power generation module, and a second light splitting surface reflects the rest of the sunlight to the condensing module, thereby realizing photoelectric conversion and photothermal conversion. The first light splitting surface and the second light splitting surface are paraboloids, and the optical property of the analog parabola is known as follows: for the paraboloid, the light emitted from the focal line is reflected by the paraboloid and then is emitted out parallel to the axis plane and vertical to the focal line, the focal line of the light splitting module and the focal line of the condensing lens are in the same straight line, the light emitted into the light splitting module through the condensing lens passes through the focal line of the light splitting module, and according to the property of the paraboloid, the direction of the sunlight reflected by the first light splitting surface is the same as the opposite direction of the light emitted from the focal line after being reflected by the first light splitting surface, and the direction of the sunlight reflected by the second light splitting surface is the same as the direction of the light emitted from the focal line after being reflected by the second light splitting surface, so that the two light splitting rays can be transmitted in a collimating way, and the directions can be parallel to the axis plane of the paraboloid, namely the emission directions of the two light splitting rays are parallel to the direction of the light splitting module. In practical use, the emission directions of the two paths of light splitting rays can be adjusted by adjusting the orientation of the light splitting module. Because two paths of light splitting rays can be transmitted in a collimating way, the light is prevented from being dispersed, and the photovoltaic power generation module and the heat collection module can better receive the reflected light.
Preferably, the cross section of the directional beam splitter in the vertical direction is parabolic, the first light splitting surface is an outer surface, and the second light splitting surface is an inner surface. The shape of the directional light splitter can be a long groove shape formed by drawing towards a certain direction by taking a parabola as a prototype, or a cone shape formed by rotating around a rotating shaft by taking the parabola as the prototype and taking the central line of the parabola as the rotating shaft.
Preferably, the directional beam splitter is in the shape of a long groove, and the first light splitting surface and the second light splitting surface are both groove paraboloids. The long-groove-shaped directional light splitter has a larger area, the focal points are also integrated into one focal line, more light rays from the condensing lens can be received and reflected, and the overall conversion efficiency of the device is improved.
Preferably, the directional beam splitter is conical, and the focal point is only one, so that the directional beam splitter can split all received sunlight into two paths of light rays no matter which direction the directional beam splitter faces, and the directions of the two paths of light rays and the direction of the directional beam splitter keep horizontal, so that the direction of the two paths of light rays can be adjusted by a larger margin by the beam splitting module, and the arrangement of the device is facilitated.
Preferably, the light-gathering module further comprises a bracket, a mirror frame connected with the rotating shaft of the bracket, and a driving device for driving the mirror frame to rotate; the condensing lens is arranged on the mirror frame; the focal line of the condensing lens and the axis of the mirror frame are positioned on the same straight line. The driving device can be a motor, and the motor drives the mirror frame to drive the condensing lens to rotate, so that the condensing lens can track the sun and better obtain sunlight. The focal line of the condensing lens is on the same straight line with the axis of the mirror frame. The lens frame is semicircular, and the radius is numerically equal to the focal length of the condensing lens, so that the focal line of the condensing lens can be in the same straight line with the focal line of the directional beam splitter no matter how the condensing lens rotates.
Preferably, the condensing lens is in the shape of a circular arc, and the mirror frame is attached to the condensing lens in shape. The circular arc-shaped condensing lens can collect more sunlight on a focal line, namely, the directional light splitter can receive more sunlight.
Preferably, the photovoltaic power generation module includes two solar cell panels, which are a first solar cell panel and a second solar cell panel, respectively, the first solar cell panel faces the light splitting module, and the second solar cell panel is located on one side of the first solar cell panel away from the light splitting module and is arranged in an inclined manner. One end of the second solar cell panel close to the first solar cell is inclined upwards. The second solar cell panel improves the output power of electric energy on the one hand, and on the other hand, the temperature rise of the first solar cell panel caused by the fact that solar radiation directly irradiates the back face of the first solar cell panel is avoided.
Preferably, each of the light-gathering module, the light-splitting module, the photovoltaic power generation module and the heat collection module is taken as a unit module, and a plurality of unit modules are arranged side by side, and the side by side can be horizontal side by side or vertical side by side.
Preferably, the heat collection module is provided with a plurality of light collection modules, the plurality of light condensation modules, the plurality of light splitting modules and the plurality of photovoltaic power generation modules are arranged on two sides of the heat collection module and are positioned at different heights, the second light splitting surfaces of the light splitting modules face the heat collection module, and the first light splitting surfaces of the light splitting modules face the corresponding photovoltaic power generation modules respectively; the heat collecting modules are respectively matched with the light splitting modules. The solar heat collection module can be provided with one, each light condensation module, each light splitting module and each photovoltaic power generation module are arranged to be one unit module, a plurality of unit modules are distributed on two sides of the heat collection module, and the second light splitting white surface of each light splitting module of each unit module faces the heat collection module. The heat collection module can be provided with a plurality of, and every spotlight module, beam splitting module and photovoltaic power generation module set up to a unit module, and every heat collection module's both sides all are provided with a unit module.
Preferably, the number of the heat collection modules is one, each of the light condensation modules, the light splitting module and the photovoltaic power generation module is combined into one unit module, and the plurality of unit modules are circumferentially distributed around the heat collection module by taking the heat collection module as a circle center. The light splitting module of each unit module faces the heat collecting module, and heat can be concentrated on one heat collecting module.
Compared with the prior art, the invention has the beneficial effects that: the light splitting module can adjust the emission direction of the split light, the arrangement of the heat collection module and the photovoltaic power generation module is not restricted by the light splitting module, and the arrangement of each module in the device is easier as required; meanwhile, light split by the light splitting module can be transmitted in a collimating way without being diffused, the heat collecting module and the photovoltaic power generation module can receive more uniform light, and the energy utilization efficiency is higher. In addition, each module of the invention can be independent, and can form the cogeneration devices of different forms according to the needs, thereby being more convenient to use and obtaining higher grade heat energy.
Drawings
Fig. 1 is a schematic structural diagram of a solar cogeneration apparatus of the invention.
FIG. 2 is a schematic diagram of the structure of the directional beam splitter of the present invention;
FIG. 3 is a schematic diagram of the operation of a solar cogeneration unit of the invention;
fig. 4 is a schematic structural diagram of another embodiment of a solar cogeneration apparatus of the invention;
FIG. 5 is a schematic diagram of the layout of a solar cogeneration unit of the invention;
FIG. 6 is a schematic structural diagram of another arrangement of a solar cogeneration unit of the invention;
fig. 7 is a schematic structural diagram of another arrangement mode of a solar cogeneration device of the invention;
fig. 8 is a schematic structural diagram of another arrangement mode of the solar cogeneration device.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "long", "short", etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the drawings, it is only for convenience of description and simplicity of description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limitations of the present patent, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
The technical scheme of the invention is further described in detail by the following specific embodiments in combination with the attached drawings:
example 1
Fig. 1-3 show an embodiment of a solar cogeneration device, which includes a light condensing module 1 provided with a light condensing lens 101, a light splitting module 2, a photovoltaic power generation module 3, and a heat collecting module 4, where the light splitting module 2 includes a directional light splitter 203 provided with a first light splitting surface 201 and a second light splitting surface 202, the first light splitting surface 201 and the second light splitting surface 202 are both paraboloids, a focal line of the directional light splitter 203 and a focal line of the light condensing lens 101 are in the same straight line, one side of the directional light splitter 203 provided with the second light splitting surface 202 faces the heat collecting module 4, and one side of the directional light splitter 203 provided with the first light splitting surface 201 faces the photovoltaic power generation module 3. In this embodiment, the first dispersing surface 201 is coated with a plurality of layers of Nb2O5And SiO2The prepared frequency division film is obtained by controlling Nb2O5And SiO2The thickness of the film sets the spectral range of reflection and absorption of the frequency-dividing film. The second dispersing surface 202 is a normal highly reflective glass mirror.
The cross section of the directional beam splitter 203 in the vertical direction is parabolic, the first light splitting surface 201 is an outer surface, and the second light splitting surface 202 is an inner surface. The directional beam splitter 203 is elongated and the first and second splitting surfaces 201 and 202 are both parabolic and grooved. The long-groove-shaped directional beam splitter 203 has a larger area, the focal points are also integrated into a focal line, more light rays from the condensing lens can be received and reflected, and the overall conversion efficiency of the device is improved.
Specifically, the light-gathering module 1 further comprises a support 102, a frame 103 connected with the support 102 through a rotating shaft, and a driving device 104 for driving the frame 103 to rotate; the condenser lens 101 is mounted on the frame 103; the focal line of the condenser lens 101 is aligned with the axis of rotation of the lens frame 103. The driving device 104 may be a motor, and the motor drives the mirror frame 103 to drive the condensing lens 101 to rotate, so that the condensing lens 101 can track the sun, and better obtain the sunlight. The focal line of the condenser lens 101 is aligned with the axis of rotation of the lens frame 103. The lens frame 103 is semicircular and has the same radius as the focal length of the condenser lens 101, so that the focal line of the condenser lens 101 can be aligned with the focal line of the directional beam splitter 203 no matter how the condenser lens 101 rotates. In this embodiment, the condensing lens is a cylindrical linear fresnel lens.
The condenser lens 101 is in the shape of a circular arc, and the lens frame 103 is attached to the outer shape of the condenser lens 101. The circular arc-shaped condenser lens 101 can collect more sunlight on the focal line, i.e. the directional beam splitter 203 can receive more sunlight.
In addition, the photovoltaic power generation module 3 includes two solar cell panels, which are a first solar cell panel 301 and a second solar cell panel 302, respectively, the first solar cell panel faces the light splitting module 2, and the second solar cell panel 302 is located on one side of the first solar cell panel 301 away from the light splitting module 2 and is obliquely arranged. One end of the second solar cell panel 302 adjacent to the first solar cell is inclined upward. The second solar cell panel 302 improves the output power of the electric energy, and on the other hand, avoids the temperature rise of the first solar cell panel 301 caused by the direct irradiation of the solar radiation on the back surface of the first solar cell panel 301.
In the present embodiment, the light splitting module 2, the photovoltaic power generation module 3, and the heat collection module 4 are all placed on a height-adjustable stage.
The working principle or working process of the embodiment is as follows: the sunlight is emitted to the light splitting module 2 after passing through the condensing lens 101, the first light splitting surface 201 of the light splitting module 2 reflects part of the sunlight to the photovoltaic power generation module 3, and the second light splitting surface 202 reflects the rest part of the sunlight to the condensing module 1, so that photoelectric conversion and photo-thermal conversion are realized. The first light splitting surface 201 and the second light splitting surface 202 are both paraboloids, and the optical properties of the analog parabola can be known: for a paraboloid, light rays emitted from a focal line are reflected by the paraboloid and then emitted out parallel to an axis plane and perpendicular to the focal line, the focal line of the light splitting module 2 and the focal line of the condensing lens 101 are in the same straight line, light rays emitted into the light splitting module 2 through the condensing lens 101 pass through the focal point of the light splitting module 2, according to the property of the paraboloid, the sunlight reflecting direction of the first light splitting surface 201 is the same as the opposite direction of the light rays emitted from the focal line after being reflected by the first light splitting surface 201, and the sunlight reflecting direction of the second light splitting surface 202 is the same as the sunlight reflecting direction of the light rays emitted from the focal line after being reflected by the second light splitting surface 202, so that two paths of light splitting light rays can be transmitted in a collimating way, and the emitting direction is parallel to the orientation of the light splitting module 2. In practical use, the emission directions of the two paths of light splitting rays can be adjusted by adjusting the orientation of the light splitting module 2. Because two paths of light splitting rays can be transmitted in a collimating way, the light is prevented from being dispersed, and the photovoltaic power generation module and the heat collection module can better receive the reflected light.
The beneficial effects of this embodiment: the light splitting module 2 can adjust the emitting direction of the split light, so that the arrangement of the light splitting module 2 is not influenced by the heat collecting module 4 and the photovoltaic power generation module 3, and the arrangement of each module in the device is easier as required. Meanwhile, the light split by the light splitting module 2 can be transmitted in a collimating way without divergence, the heat collecting module 4 and the photovoltaic power generation module 3 can receive more uniform light, and the energy utilization efficiency is higher. In addition, each module of the invention can be independent, and can form the cogeneration devices of different forms according to the requirements, thereby being more convenient to use.
Example 2
As shown in fig. 4, another embodiment of a solar cogeneration device is shown, the present embodiment is different from embodiment 1 in that the directional beam splitter 203 is conical and has only one focal point, so that the directional beam splitter 203 only rotates around the focal point, and finally, no matter which direction the directional beam splitter 203 faces, the directional beam splitter 203 can divide all received sunlight into two paths of light rays, and the directions of the two paths of light rays and the direction of the directional beam splitter 203 keep horizontal, so that the beam splitting module 2 can adjust the directions of the two paths of light rays more greatly, thereby facilitating the arrangement of the device.
Other features, operating principles and advantageous effects of the present implementation are consistent with embodiment 1.
Example 3
As shown in fig. 5, another embodiment of a solar cogeneration device is shown, in this embodiment, on the basis of embodiment 1 and embodiment 2, each of the light-gathering module 1, the light-splitting module 2, the photovoltaic power generation module 3 and the heat-collecting module 4 is used as a unit module, and the three unit modules are horizontally arranged side by side.
The beneficial effects of this embodiment: a plurality of heat collecting modules 4 are coupled in a series or parallel connection mode, and then considerable high-temperature heat energy is obtained.
Example 4
As shown in fig. 6, another embodiment of a solar cogeneration device is shown, in this embodiment, on the basis of embodiments 1 and 2, one heat collection module 4 is provided, each light condensation module 1, light splitting module 2 and photovoltaic power generation module 3 are provided as one unit module, six unit modules are provided at two sides of the heat collection module 4 and at different heights, the second light splitting surfaces 202 of the light splitting modules 2 face the heat collection module 4, and the first light splitting surfaces 201 of the light splitting modules 2 face the respective corresponding photovoltaic power generation modules 3; the heat collecting modules 4 are respectively matched with the light splitting modules 2.
The beneficial effects of this embodiment: a plurality of unit modules are easily arranged near the heat collection module 4, and the high-efficiency concentration of a large amount of solar energy is realized by a light transmission method, so that the grade of the heat energy output by the heat collection module 4 is improved, the heat transfer working medium in the heat collection module 4 and the use of related power devices are saved, and the overall economy of the system is improved.
Example 5
As shown in fig. 7, another embodiment of a solar cogeneration device is shown, in this embodiment, on the basis of embodiment 1 and embodiment 2, three heat collection modules 4 may be provided, each light condensation module 1, light splitting module 2 and photovoltaic power generation module 3 are provided as one unit module, and two sides of each heat collection module 4 are provided with one unit module.
Example 6
As shown in fig. 8, another embodiment of the solar cogeneration device is shown, in this embodiment, on the basis of embodiment 2, one heat collection module 4 is provided, each light condensation module 1, the light splitting module 2 and the photovoltaic power generation are combined into one unit module, and the plurality of unit modules are circumferentially and equidistantly distributed around the heat collection module 4 by taking the heat collection module 4 as a circle center. The light splitting module 2 of each unit module faces the heat collecting module 4, and can concentrate heat on one heat collecting module 4.
The beneficial effects of this embodiment: a plurality of unit modules are easily arranged near the heat collection module 4, and the high-efficiency concentration of a large amount of solar energy is realized by a light transmission method, so that the grade of the heat energy output by the heat collection module 4 is improved, the heat transfer working medium in the heat collection module 4 and the use of related power devices are saved, and the overall economy of the system is improved.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (9)

1. A solar cogeneration device comprises a light gathering module (1) provided with a light gathering lens (101), a light splitting module (2), a photovoltaic power generation module (3) and a heat collecting module (4), and is characterized in that the light splitting module (2) comprises a directional light splitter (203) provided with a first light splitting surface (201) and a second light splitting surface (202), the first light splitting surface (201) and the second light splitting surface (202) are paraboloids, a focal line of the directional light splitter (203) and a focal line of the light gathering lens (101) are in the same straight line, one side of the directional light splitter (203) provided with the second light splitting surface (202) faces the heat collecting module (4), and one side of the directional light splitter (203) provided with the first light splitting surface (201) faces the photovoltaic power generation module (3); the light-gathering module (1) further comprises a support (102), a lens frame (103) connected with the support (102) in a rotating mode and a driving device (104) for driving the lens frame (103) to rotate; the condenser lens (101) is mounted on the lens frame (103); the focal line of the condensing lens (101) and the axis of the lens frame (103) rotating are on the same straight line, the lens frame (103) is semicircular, and the radius of the lens frame is the same as the focal length of the condensing lens (101).
2. A solar cogeneration apparatus according to claim 1, wherein said directional beam splitter (203) has a parabolic vertical cross-section, said first light splitting surface (201) being an outer surface and said second light splitting surface (202) being an inner surface.
3. A solar cogeneration unit according to claim 2, wherein said directional beam splitter (203) is elongated in the shape of a trough, and said first splitting surface (201) and said second splitting surface (202) are both parabolic in the shape of a trough.
4. A solar cogeneration unit according to claim 2, characterised in that said directional beam splitter (203) is conical and has a parabolic cross-section.
5. A solar cogeneration device according to claim 1, wherein said condenser lens (101) is arc-shaped, and said mirror frame (103) is fitted to the outer shape of said condenser lens (101).
6. A solar cogeneration unit according to claim 1, characterized in that the photovoltaic power generation module (3) comprises two solar panels, respectively a first solar panel (301) and a second solar panel (302), said first solar panel facing the light splitting module (2), said second solar panel (302) being positioned on the side of said first solar panel (301) remote from said light splitting module (2) and being inclined.
7. A solar cogeneration apparatus according to any one of claims 3-6, wherein each of said concentrator module (1), said light-splitting module (2), said photovoltaic power generation module (3) and said heat collection module (4) is provided as a unit module, and a plurality of unit modules are arranged side by side.
8. The solar cogeneration apparatus according to any one of claims 3-6, wherein a plurality of heat collection modules (4) are provided, a plurality of light concentration modules (1), light splitting modules (2) and photovoltaic power generation modules (3) are provided at two sides of the heat collection modules (4) and at different heights, the second light splitting surfaces (202) of the light splitting modules (2) face the heat collection modules (4), and the first light splitting surfaces (201) of the light splitting modules (2) face the corresponding photovoltaic power generation modules (3); the heat collection modules (4) are respectively matched with the light splitting modules (2).
9. The solar cogeneration apparatus according to any one of claims 3 to 6, wherein the heat collection module (4) is provided with a plurality of light concentration modules (1), the light splitting module (2) and the photovoltaic power generation module are combined into one unit module, and the plurality of unit modules are circumferentially distributed around the heat collection module (4) by taking the heat collection module (4) as a circle center.
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US8283554B2 (en) * 2005-12-19 2012-10-09 Corning Incorporated Method and apparatus for concentrating light
CN2913955Y (en) * 2006-06-29 2007-06-20 中国科学技术大学 Heat self-dissipating solar energy accumulation type photovoltaic electricity generating system
FR2951251B1 (en) * 2009-10-08 2012-03-30 Soitec Silicon On Insulator ENERGY GENERATION SYSTEM COMBINING THERMAL SOLAR ENERGY AND PHOTOVOLTAIC ENERGY
US9773934B2 (en) * 2014-10-01 2017-09-26 Sharp Laboratories Of America, Inc. Hybrid Trough solar power system using photovoltaic two-stage light concentration
CN204271978U (en) * 2014-11-05 2015-04-15 中国华能集团清洁能源技术研究院有限公司 A kind of solar thermoelectric coproduction device
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