WO2018215963A1 - Panneau solaire amélioré - Google Patents

Panneau solaire amélioré Download PDF

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Publication number
WO2018215963A1
WO2018215963A1 PCT/IB2018/053682 IB2018053682W WO2018215963A1 WO 2018215963 A1 WO2018215963 A1 WO 2018215963A1 IB 2018053682 W IB2018053682 W IB 2018053682W WO 2018215963 A1 WO2018215963 A1 WO 2018215963A1
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WIPO (PCT)
Prior art keywords
light
solar
solar cell
cell assembly
focusing
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Application number
PCT/IB2018/053682
Other languages
English (en)
Inventor
Wee Kim Terence ONG
Original Assignee
7 Corporation Pte. Ltd.
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Publication date
Application filed by 7 Corporation Pte. Ltd. filed Critical 7 Corporation Pte. Ltd.
Publication of WO2018215963A1 publication Critical patent/WO2018215963A1/fr

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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
    • H02S40/44—Means to utilise heat energy, e.g. hybrid systems producing warm water and electricity at the same time
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/052—Cooling means directly associated or integrated with the PV cell, e.g. integrated Peltier elements for active cooling or heat sinks directly associated with the PV cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/0248—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies
    • H01L31/036—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies characterised by their crystalline structure or particular orientation of the crystalline planes
    • H01L31/0392—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies characterised by their crystalline structure or particular orientation of the crystalline planes including thin films deposited on metallic or insulating substrates ; characterised by specific substrate materials or substrate features or by the presence of intermediate layers, e.g. barrier layers, on the substrate
    • H01L31/03921—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies characterised by their crystalline structure or particular orientation of the crystalline planes including thin films deposited on metallic or insulating substrates ; characterised by specific substrate materials or substrate features or by the presence of intermediate layers, e.g. barrier layers, on the substrate including only elements of Group IV of the Periodic Table
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/048—Encapsulation of modules
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/054—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/054—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means
    • H01L31/0543—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means comprising light concentrating means of the refractive type, e.g. lenses
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/054—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means
    • H01L31/0547—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means comprising light concentrating means of the reflecting type, e.g. parabolic mirrors, concentrators using total internal reflection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/054—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means
    • H01L31/0549—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means comprising spectrum splitting means, e.g. dichroic mirrors
    • 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
    • H02S20/32—Supporting structures being movable or adjustable, e.g. for angle adjustment specially adapted for solar tracking
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/005—Reflectors for light sources with an elongated shape to cooperate with linear light sources
    • 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

Definitions

  • the present application relates to a solar cell assembly.
  • it relates to a solar cell assembly with a solar tracking mechanism.
  • a solar cell assembly is an energy conversion device that con- verts solar radiation into electrical energy.
  • the solar radia- tion refers to electromagnetic radiation given off by the sun, which includes infrared, visible, and ultraviolet light.
  • the solar cell assembly often includes a plurality of solar cells for converting the solar radiation into electrical energy, a cover glass for optical filtering and for protecting the solar cells from external influences, such as radiation, air, dust or water, and an adhesive layer for binding the cover glass to the solar cell and for forming an air-tight seal between the cover glass and the solar cell.
  • a solar cell assembly can be provided with a solar tracking unit for tracking positions of the sun as the sun moves across the sky.
  • the solar tracking unit is configured to position the solar cell assembly for receiving the solar radiation at different times of the day.
  • the solar cell panel includes a solar cell panel body, a metal frame, a light- transmitting rear glass panel, and a junction box.
  • the metal frame includes two opposing grooves which are inlaid with the solar cell panel body and with the light-transmitting rear glass panel.
  • the junction box is provided in an opening junction box cavity that is formed in the metal frame .
  • US4586488A shows a reflective solar tracking system.
  • the system includes a reflector, which is mounted on an assembly that incorporates a drive mechanism for rotating the reflector about two axes to compensate for altitudinal and azimuthal changes in the position of the sun.
  • the system also includes a sensor device which is adapted to point at the sun and to provide control signals to the drive mechanism for moving the reflector in response to solar movement such that sunlight is always reflected onto the collector and at the same time, the sensor device is moved so as to track the sun.
  • the application provides an improved solar cell assembly for solar energy conversion.
  • the solar cell assembly refers to an energy conversion device using solar cells or photovoltaic cells to convert solar radiation into electrical energy.
  • the solar cell refers to an electrical device which is usually made of silicon that has a photovoltaic effect, in which a voltage or an electric current is generated when the silicon is exposed to light.
  • the silicon includes electrons that are usually not free to move from an atom to another atom since the electrons are attracted towards nuclei of atoms by an electrostatic force of attraction.
  • the light strikes the silicon, the light provides energy that is needed to enable some electrons of the silicon to escape from the atoms to become free electrons .
  • These free electrons later flow through an external circuit, which is electrically connected to the solar cell, to form an electric current.
  • the number of the free electrons generated depends on the amount of the light energy the electrons receive. The higher the light intensity, the higher the light energy for providing higher number of free electrons, thereby producing a larger electric current.
  • the solar cell assembly includes an infrared filtering element for receiving solar radiation from the sun and for filtering out infrared light of the solar radiation.
  • the infrared light can be filtered out by reflecting away the infrared light while allowing visible and ultraviolet light of the solar radiation to pass through the infrared filtering element.
  • the solar cell assembly also includes a light concentrating device for receiving the filtered light from the infrared filtering element and for focusing the filtered light onto a spot or an area.
  • the filtered light can be focused either by reflection or by refraction of light.
  • the focused filtered light provides higher light intensity, which contains more energy.
  • the solar cell assembly further includes a solar panel comprising a plurality of solar cells for receiving the focused filtered light from the light concentrating device and for converting the received focused light into electrical energy.
  • the solar cell assembly also includes a vacuum chamber for thermal insulating.
  • the vacuum chamber essentially does not contain anything to allow heat transfer via conduction or convection, thereby providing a thermal insulation layer for minimizing heat transfer through the vacuum chamber.
  • the light concentrating device is provided in the vacuum cham- ber
  • the improved solar cell assembly advantageously provides higher solar energy conversion efficiency because the solar cells receives the focused filtered light, which contains high intensity of visible and ultraviolet light with higher solar energy for energy conversion.
  • the focused filtered light essentially does not contain heat-generating infrared light, which can heat the solar cells to a higher temperature that will negatively influence the energy conversion efficiency of the solar cells.
  • the improved solar cell assembly also has a longer operating life as compared to other solar cell assemblies . This is because the vacuum chamber minimizes heat transfer from the surroundings to the solar cells to induce thermal stress on the solar cells.
  • the light concentrating device includes a plurality of bar-type convex lenses.
  • Each bar-type convex lens refers to a lens that has an elongated bar-like lens body having a cross-sectional shape of a double convex lens.
  • the bar-type convex lenses act to receive light, to refract the received light, and to emit the refracted light.
  • the bar-type convex lenses provide easy and less costly implementation for focusing the filtered light onto numerous solar cells that are located within an area as compared to convex lenses that are available commercially.
  • the light concentrating device includes at least one receiving mirror for receiving the filtered light and for reflecting the filtered light, and includes a parabolic concave mirror for receiving the filtered light from the receiving mirror and for focusing the received light onto a spot or an area.
  • a light concentrating device can be easily implemented.
  • the infrared filtering element can include an infrared reflective mirror, which reflects the received infrared light away from it .
  • the solar cell can further include a layer of quantum dots that is provided on a surface of the solar cell.
  • the quantum dots refer to semiconductor crystals, such as silicon, of nanometre dimensions.
  • the quantum dot contains atoms that can be excited by light, such as ultraviolet light, to cause electrons of the atoms to a higher energy level. The electrons later return to a lower energy level, causing the atoms to emit photons of light.
  • the wavelength of the emitted light depends on a size of the quantum dot. A bigger quantum dot emits longer wavelength of light while a smaller quantum dot emits shorter wavelength of light.
  • the quantum dot can be sized to be excited by ultraviolet light for emitting a predetermined wavelength of light, such as a wavelength of visible light.
  • the application also provides an improved solar energy conversion device.
  • the solar energy conversion device includes the solar cell assembly that is described above and a solar tracking mechanism that is connected to the solar cell assembly for orienting the solar cell assembly to receive solar radiation despite the changing positions of the sun.
  • the solar tracking mechanism can include a solar sensor, a solar collector, a rotary structure, and a drive mechanism.
  • the solar collector is intended for detecting positions of the sun and for sending detection signals in relation to the position of the sun.
  • the solar collector is used for receiving solar radiation from the sun and for focusing the received solar radiation by reflection onto an area or a spot .
  • the rotary structure is connected to the solar collector and to the solar cell assembly for orienting the solar collector to receive the solar radiation directly from the sun and for positioning the solar cell assembly for receiving the focused solar radiation from the solar collector.
  • the drive mechanism is intended for rotating the rotary structure according to the detection signals from the solar sensor.
  • the rotary structure can include a rotatable platform with a supporting means that is attached to the solar collector and attached to the solar cell assembly.
  • the application also provides a light concentrating module for focusing light onto a spot.
  • the light concentrating module includes an infrared filtering element for receiving light from a light source, which emits visible light, infrared light, ultraviolet light or a combination of thereof and for filtering out the infrared light of the received light while allowing the other light to pass through .
  • the light concentrating module also includes a light concentrating device for receiving the filtered light and for focusing the filtered light to generate a high intense light beam either by reflection or refraction.
  • the light concentrating module further includes a vacuum chamber for thermal insulating.
  • the vacuum chamber is essentially vacuum, which acts as a thermal insulation layer for minimizing heat transfer through the vacuum chamber.
  • the light concentrating device is provided in the vacuum chamber.
  • the light concentrating device can include a plurality of bar- type convex lenses, which are described above.
  • the light concentrating device includes at least one receiving mirror for receiving the filtered light and for reflecting the filtered light, and includes a concave mirror for focusing the received filtered light that is reflected from the receiving mirror onto a focal point or a focal area.
  • the infrared filtering element includes an infrared reflective mirror, which reflects the received infrared light away from it.
  • the application also provides an ultraviolet (UV) light device for curing a coating.
  • the coating refers to a layer of material such as ink, adhesive, or a coating material, which is bonded onto a surface .
  • the UV light device includes an UV light source for emitting light comprising essentially UV light and a reflector for receiving the emitted light as well as for focusing the received light.
  • the UV light device also includes a light concentrating module described above.
  • the light concentrating module is intended for receiving the focused emitted light from the reflector and for filtering out infrared light of the focused emitted light while allowing the UV light of the focused emitted light to pass through.
  • the light concentrating module also acts to focus the filtered UV light onto the coating.
  • Fig. 1 illustrates a schematic diagram of a solar energy conversion device
  • Fig. 2 illustrates a schematic diagram of a solar concen- trator assembly of the solar energy conversion device of Fig • 1,
  • Fig. 3 illustrates an exploded perspective view of a por- tion of the solar concentrator assembly of Fig. 2,
  • Fig. 4 illustrates an elongated convex lens of solar con- centrator assembly of Fig. 3,
  • Fig. 5 illustrates a schematic diagram of another solar concentrator assembly, which is a variant of the so lar concentrator assembly of Figs. 1 and 2,
  • Fig. 6 illustrates a schematic diagram of a further solar concentrator assembly, which is another variant of the solar concentrator assembly of Figs. 1 and 2,
  • Fig. 7 illustrates an exploded perspective view of a por- tion of the solar concentrator assembly of Fig. 6,
  • Fig. 8 illustrates a schematic diagram of another variant of the solar concentrator assembly of Fig. 1, which is used for ultraviolet light (UV) curing,
  • Fig. 9 illustrates a schematic diagram of an UV light de- vice comprising the solar concentrator assembly of
  • Fig. 10 illustrates a schematic diagram of another solar en ergy conversion device
  • Fig. 11 illustrates a schematic diagram of a solar concen- trator assembly of the solar energy conversion device of Fig. 10.
  • details are provided to describe embodiments of the application. It shall be apparent to one skilled in the art, however, that the embodiments may be practiced without such details .
  • Fig. 1 shows an improved solar energy conversion device 1.
  • the improved solar energy conversion device 1 includes an improved solar concentrator assembly 3 with a reflective solar tracking mechanism 6.
  • the solar concentrator assembly 3 is connected to the solar tracking mechanism 6.
  • the reflective solar tracking mechanism 6 includes a rotary structure 51 with a drive mechanism 54, a parabolic solar radiation and a thermal collector 58 with a heat exchanger 59 and with a thermal storage device 60, and a solar tracker 61.
  • the rotary structure 51 is connected to the solar collector 58, to the solar concentrator assembly 3, and to the driving mechanism 54.
  • the driving mechanism 54 is also electrically connected to the solar tracker 61.
  • the solar collector 58 is connected to the heat exchanger 59, which is connected to the thermal storage device 60.
  • the drive mechanism 54 includes an actuation device such as an electric motor.
  • the rotary structure 51 includes a rotatable platform 64, a vertical arm 67, and an inclined arm 70.
  • the rotatable plat- form 64 is connected to the drive mechanism 54 while the vertical arm 67 is connected to the rotatable platform 64 and to the inclined arm 70.
  • the rotatable platform 64 has a rotational axis that is perpendicular to a major surface of the platform 64.
  • a first end of the vertical arm 67 is connected to a part of the major surface of the rotatable platform 64 such that the vertical arm 67 is substantially perpendicular to the major surface of the platform 64.
  • a part of the vertical arm 67 is connected to a first end of the inclined arm 70 such that the inclined arm 70 is inclined relative to the vertical arm 67.
  • a second end of the vertical arm 67 is attached to the solar concentrator assembly 3.
  • a second end of the inclined arm 70 is connected to the solar collector 58 such that the solar collector 58 faces the solar concentrator assembly 3.
  • the parabolic solar collector 58 is made of an elongated ste plate with a cross-sectional shape of a parabola.
  • the solar collector 58 is positioned such that the solar concentrator assembly 3 is approximately at a focal point of a concave re flective surface of the steel plate.
  • the solar tracker 61 includes a sensor device 73.
  • the heat exchanger 59 include pipes that contain heat transfer fluid.
  • the thermal storage device 60 refers to, for examples, a hot water tank or phase change materials that store thermal energy.
  • the solar concentrator assembly 3 includes a hot mirror panel 11, a light-concentrator unit 13, and a solar panel 39.
  • the light-concentrator unit 13 is located between the hot mirror panel 11 and the solar panel 39.
  • the hot mirror panel 11 includes a rectangular panel of infrared-reflecting mirror.
  • the light-concentrator unit 13 includes a vacuum chamber body 21 and a plurality of bar-type convex lenses 35 with a support 42, which are provided inside the vacuum chamber body 21.
  • the convex lens 35 is also called a light-concentrator.
  • the vacuum chamber body 21 is made of, for an example, glass and is provided in a cuboid shape.
  • the vacuum chamber body 21 includes an inner cavity 27, in which air, which transmits heat by conduction or convection, has been essentially evacuated or removed.
  • the inner cavity 27 is essentially vacuum.
  • the vacuum chamber body 21 includes a first outer surface 30 and a second outer surface 33 that is opposite to the first outer surface 30.
  • the first outer surface 30 is adhered to a surface the hot mirror panel 11 while the second outer surface 33 is adhered to a surface the solar panel 39. Edge portions of the hot mirror panel 11, of the vacuum chamber body 21, and of the solar panel 39 are sealed together with sealants 41.
  • Each convex lens 35 has a bar-like lens body having a cross- sectional shape of a double convex lens.
  • the lens body includes an elongated convex light incident surface 37 and an elongated convex light emission surface 38, which is opposite to the elongated light incident surface 37.
  • Two ends the lens body are connected to the support 42, which is attached to inner side walls of the vacuum chamber body 21.
  • the convex lenses 35 are arranged in rows separating from each other such that the light incident surfaces 37 face the hot mirror panel 11 and the light emission surfaces 38 face the solar panel 39.
  • the solar panel 39 includes a plurality of solar cells 49.
  • Each solar cell 49 is provided with a quantum dot layer 47, which is placed on a surface of the solar cell 49 facing the light surfaces 38 of the convex lenses 35.
  • the quantum dot layer 47 is covered with a glass plate 48 such that the quantum dot layer 47 is placed between the solar cell 49 and the cover glass plate 48.
  • the solar cell 49 with the quantum layer 47 is also called a quantum dot solar cell.
  • the quantum dot layer 47 includes one or more quantum dots.
  • the quantum dots refer to semiconductor crystals, such as silicon, of nanometre dimensions. Examples of materials for forming quantum dots include, but are not limited to, MgO, MgS,
  • the solar cells 49 are arranged at a foca 1 plane of the convex lenses 35.
  • Each solar cell 49 includes a photovoltaic cell, which is provided by silicon that is deposited on a substrate, such as glass.
  • the hot mirror panel 11 of the solar concentrator assembly 3 is intended for reflecting infrared, heat-generating wavelengths of solar radiation away while allowing visible and ultraviolet wavelengths of the solar radiation to pass through for reaching the convex lenses 35.
  • the hot mirror panel 11 prevents the infrared light, which causes heating of an object, from reaching the convex lenses 35.
  • the convex lenses 35 which act as light concentrators, are used for focusing the received visible and ultraviolet light rays by refraction to provide a more intense light beam for projecting onto a spot or a point of the solar cells 49.
  • the increased or concentrated light intensity serves to provide more solar energy to the solar cells 49.
  • the quantum dots of the quantum dot layer 47 have sizes that are adapted to convert the received concentrated ultraviolet light beam into visible light beam of predetermined frequencies for transmitting to the solar cells 49. This can increase the light intensity of the visible light beam to be received by the solar cells 49.
  • the solar cells 49 are intended for converting the received visible light beam directly into electricity.
  • the light of the solar radiation comprises photons that carry energy.
  • the photons strike the solar cells 49 and then bump into electrons of atoms of the solar cells 49, the photons and the electrons exchange energy.
  • This energy exchange causes the electrons, which travel in circular orbits around nuclei of the atoms, to gain energy and later jump from an orbit of low- energy state to another orbit of a higher-energy state, which is further away from the nuclei of the atoms .
  • These energized electrons afterward overcome an electrostatic force of attraction between the electrons and the nuclei of the atoms and then escape from the atoms to become free electrons.
  • the solar energy conversion efficiency of the solar cells 49 depends on the intensity of the received visible light beam. The higher the light intensity of the received visible light beam, the higher the solar energy conversion efficiency of the solar cell 49. Put differently, the quantum dot layer 47 acts to enhance the solar energy conversion efficiency of the solar cells 49 by increasing the light intensity of the visible light beam received by the solar cells 49.
  • the cover glass plate 48 serves to protect the solar cells 49 from external influences, such as air, dust, or water.
  • the vacuum chamber body 21 with the vacuum cavity 27 is used as a thermal insulation layer for minimizing heat transfer vi conduction and convection from the surroundings to the solar cells 49, thereby preventing the temperature of the solar cells 49 from rising. This avoids or eliminates negative influence on an energy conversion efficiency of the solar cells 49 due to a higher temperature.
  • the sensor device 73 of the solar tracker 61 acts to detect posi- tions of the sun, and to send control signals to the drive mechanism 54.
  • the drive mechanism 54 is intended for rotating the rotatable platform 64 by an angular distance according to the received control signals.
  • the rotating platform 64 serves to rotate the vertical arm 67 and the inclined arm 70 together about the rotational axis of the rotatable platform 64 for orienting the solar collector 58 to face towards the sun.
  • the vertical arm 67 and the inclined arm 70 are used for positioning the solar concentrator assembly 3 and the solar collector 58 in predetermined positions.
  • the solar collector 58 serves to receive solar radiation from the sun and to focus or concentrate the received solar radiation onto the solar concentrator assembly 3.
  • the solar tracker 61 enables the solar refle tor 58 and the solar concentrator assembly 3 to move in response to solar movement such that the solar reflector 58 re ceives the solar radiation from the sun and focuses the received solar radiation onto the solar concentrator assembly at any time of the day despite the changing positions of the sun .
  • the solar collector 58 also acts as a thermal absorber or thermal collector for absorbing heat-generating infrared radiation from the sun and for transferring the absorbed heat to the heat exchanger 59.
  • the solar collector 58 provides two functions. It not only acts to focus the solar radiation for providing more solar energy for energy conversion, but also gathers solar heat for heating purpose.
  • the heat exchanger 59 is intended for transferring the heat from the solar collector 58 to the thermal storage device 60.
  • the thermal storage device 60 serves to store the thermal energy received from the heat exchanger 59.
  • Fig. 5 shows another solar concentrator assembly 3a, which is a variant of the solar concentrator assembly 3 described above.
  • the solar concentrator assembly 3a provides another implementation of the light-concentrator unit 13.
  • the solar concentrator assembly 3a includes a hot mirror panel 11a, a light-concentrator unit 13a, and a solar panel 39a.
  • An arrangement of the hot mirror panel 11a, the light-concentrator unit 13a, and the solar panel 39a is similar to the arrangement of the hot mirror panel 11, the light-concentrator unit 13, and the solar panel 39 of the solar concentrator assembly 3.
  • the hot mirror panel 11a and the solar panel 39a include parts, which are similar to the corresponding parts of the hot mirror panel 11 and the solar panel 39 of the solar concentrator assembly 3.
  • the light-concentrator unit 13a includes a vacuum chamber body 21a and a plurality of light-concentrators 24, which are located inside the vacuum chamber body 21a.
  • the vacuum chamber body 21a has features that are similar to the corresponding features of the vacuum chamber body 21 of the solar concentrator assembly 3.
  • Each light-concentrator 24 includes a pair of elongated flat mirrors 80 and an elongated parabolic concave mirror 83.
  • the flat mirrors 80 and the concave mirror 83 are arranged such that the flat mirrors 80 are positioned inclined towards each other for receiving light rays and for reflecting the received light rays onto an inner surface the concave mirror 83.
  • the concave mirror 83 is also arranged such that solar cells 49a of the solar panel unit 16a of the solar concentrator assembly 3a are positioned at a focal plane of the concave mirror 83.
  • the concave mirror 83 serves to focus or concentrate the received light rays from the flat mirrors 80 by reflection to provide a light beam of high intensity for projecting onto the solar cells 49a of the solar panel 39a.
  • Fig. 6 shows a further solar concentrator assembly 3b, which is another variant of the solar concentrator assembly 3.
  • the solar concentrator assembly 3b includes a hot mirror panel lib, a light-concentrator unit 13b, and a solar panel unit 16.
  • the light-concentrator unit 13b is located between the hot mirror panel lib and the solar panel unit 16.
  • the hot mirror panel lib includes a rectangular panel of infrared-reflecting mirror.
  • the light-concentrator unit 13b includes a vacuum chamber body 21b and a light-concentrator panel 23 which is provided inside the vacuum chamber body 21b.
  • the vacuum chamber body 21b is provided in a cuboid shape.
  • the vacuum chamber body 21b includes a vacuum cavity 27b.
  • the vacuum chamber body 21b is placed between the hot mirror panel lib and the solar panel unit 16 such that the vacuum chamber body 21b contacts the hot mirror panel lib and the solar panel unit 16. Edge portions of the hot mirror panel lib, of the vacuum chamber body 21b, and of the solar panel unit 16 are sealed together with sealants 41b.
  • the light-concentrator panel 23 includes a plurality of apertures 25 that are arranged in an array. Each aperture 25 is mounted with a convex lens 36.
  • the convex lens 36 is arranged such that surfaces of the convex lens 36 faces the hot mirror panel lib and the solar panel unit 16.
  • the solar panel unit 16 includes a solar panel 39b, a plurality of supporting means 43, and a backing plate 46.
  • the supporting means 43 is positioned between the solar panel 39b and the backing plate 46.
  • the solar panel 39b includes a plurality of solar cells 49b with a quantum dot layer.
  • the solar cells 49b are arranged such that each solar cell 49b faces a corresponding convex lens 36 of the light-concentrator panel 23 and it is placed at a predetermined position that is located at a focal point of the corresponding convex lens 36.
  • Each solar cell 49b includes a photovoltaic cell.
  • the photovoltaic cell is provided by silicon that is deposited on a substrate, such as glass.
  • the supporting means 43 is arranged such that each supporting means 43 supports a corresponding solar cell 49b in a predetermined position.
  • the supporting means 43 which are made of thermal conductive material, are provided on the backing plate 46 for conducting heat away from the solar cells 49b.
  • the hot mirror panel 11 is coated with a layer of infrared reflective material for increasing its ability to reflect infrared light.
  • the light-concentrator 24 can include an elongated planoconvex lenses with a lens body having a cross-sectional shape of a plano-convex lens, gradient-index (GRIN) lenses having a refractive index gradient increasing from its centre plane, Fresnel lenses, hybrid lenses having a cylindrical lens in the centre and a set of total internal refection (TIR) structures on the edges, parabolic reflectors, or pairs of compound parabolic reflective mirrors.
  • GRIN gradient-index
  • TIR total internal refection
  • the improved solar energy conversion device 1 provides several advantages .
  • the improved solar energy conversion device 1 provides higher solar energy conversion efficiency because the solar cells 49 receives high intensity of solar radiation from the light-con centrators . Furthermore, the hot mirror panel 11 prevents heat-generating infrared light from reaching the solar cells 49 to heat the solar cells 49 to a higher temperature, which will lower the energy conversion efficiency of the solar cell
  • the solar energy conversion device 1 also has a longer operat ing life as compared to other solar cell assemblies, wherein solar cells of these solar cell assemblies receive infrared light. This is because thermal stress on the solar cells 49 i minimized by preventing the infrared light from heating the solar cells 49 and by the vacuum chamber body 21, which minimizes heat being transferred from the surroundings to the solar cells 49.
  • Fig. 8 shows a light concentrator module 79, which is another variant of the solar concentrator assembly 3. This light con- centrator module 79 can be used for ultraviolet (UV) curing of ink or a coating on a surface.
  • UV ultraviolet
  • the light concentrator module 79 includes a hot mirror panel 81, a light-concentrator unit 85, and a glass plate 89.
  • the light-concentrator unit 85 is located between the hot mirror panel 81 and the glass plate 89. Edge portions of the hot mirror panel 81, of the light-concentrator unit 85, and of the glass plate 89 are sealed together with sealants 91.
  • the hot mirror panel 81 and the light-concentrator unit 85 have features, which are similar to the features of the hot mirror panel 11 and the light-concentrator unit 13 of the s lar concentrator assembly 3.
  • the light concentrator module 79 is positioned relative to an UV lamp 93, which emits essentially UV light and some infrared light as a by-product, and relative to an elliptical reflector 97 having a concave surface such that UV light rays and infrared light rays emitted from the UV lamp 93 are being reflected by the concave surface of the reflector 97 to focus onto the light concentrator module 79.
  • the hot mirror panel 81 of the light concentrator module 79 then receives the reflected UV light and the infrared light. It later reflects away the received infrared light and allows the received UV light to pass through and travel towards the light-concentrator unit 85.
  • the light-concentrator unit 85 afterward receives the UV light and then focuses the received UV light to generate a high intense UV light beam for projecting onto a surface 99 that is coated with a material such as ink, coating, or adhesive.
  • the high intense UV light beam then acts to cure the coating.
  • the light concentrator module 79 advantageously provides high intensity of UV light that is needed for facilitating the coating material to be bonded with the surface 99 firmly and quickly, without a need for a higher power UV lamp, thereby reducing an operating cost of UV curing. It also removes infrared wavelengths of light to avoid shrinkage and bending of a thin sheet after curing.
  • Fig. 10 shows another improved solar energy conversion device 101.
  • the improved solar energy conversion device 101 includes a reflective solar tracking module 106 with an improved solar concentrator assembly 3c, which is connected to the solar tracking module 106.
  • the solar tracking module 106 includes a parabolic solar radiation collector 109 with an actuation mechanism 112, which is connected to the solar radiation collector 109.
  • the parabolic solar radiation collector 109 includes two parabolic light reflective glass plates 113, a shaft 116, and a light sensor 118.
  • the glass plates 113 are pivotally connected to the shaft 116 and are pivotally movable such that the solar concentrator assembly 3c is essentially located at an focus line of the respective parabolic glass plates 113.
  • the light sensor 118 is mounted on one of the parabolic glass plates 113.
  • the glass plates 113 are coated with a layer of light reflective material.
  • the actuation mechanism 112 is connected to the shaft 116.
  • the solar concentrator assembly 3c includes parts that correspond to the parts of the solar concentrator assembly 3, which is described above.
  • the arrangement of the parts of the solar concentrator assembly 3c and the arrangement of the parts of the solar concentrator assembly 3 are similar.
  • the solar concentrator assembly 3c further includes a thermally conductive casing 120 with multiple radiators or heat sink fins 123, which are attached to an outer surface of the casing 120.
  • the parts of the solar concentrator assembly 3c are provided inside the casing 120, wherein a solar panel 39c of the solar concentrator assembly 3c is located next to the heat sink fins 123.
  • the parabolic light reflective glass plates 113 are intended for receiving sunlight and for concentrating or focusing the received sunlight, by reflection, onto the solar concentrator assembly 3c.
  • the light sensor 118 acts to detect positions of the sun, and to send control signals to the actuation mechanism 112.
  • the actuation mechanism 112 is used for rotating the shaft 116 according to the received control signals.
  • the rotating shaft 116 acts to pivotally move the glass plates 113 for focusing sunlight onto the solar concentrator assembly 3c as the position of the sun moves .
  • the solar panel 39c of the solar concentrator assembly 3c acts to convert the received sunlight into electrical energy.
  • the heat sink fins 123 of the solar concentrator assembly 3c are intended for conducting heat from the solar panel 39c to lower the temperature of the solar panel 39c.
  • a solar cell assembly for solar energy conversion comprising
  • an infrared filtering element for filtering out infrared light
  • a light concentrating device for focusing the filtered light
  • a solar panel comprising a plurality of solar cells for converting the focused light into electrical energy
  • the light concentrating device is provided in the vacuum chamber.
  • At least one receiving mirror for receiving the filtered light
  • a solar energy conversion device comprising
  • a solar cell assembly of one of items 1 to 5 and a solar tracking mechanism being connected to the solar cell assembly for orienting the solar cell assembly to receive solar radiation.
  • a solar sensor for detecting positions of the sun and for sending detection signals
  • a solar collector for receiving solar radiation from the sun and for focusing the solar radiation
  • a rotary structure being connected to the solar collector and to the solar cell assembly for orienting the solar collector to receive the solar radiation from the sun and for positioning the solar cell assembly for receiving the focused solar radiation from the solar collector, and
  • the rotary structure comprises a rotatable platform with a supporting means that is attached to the solar collector and attached to the solar cell assembly.
  • a light concentrating module for focusing light comprising an infrared filtering element for filtering out infrared light ,
  • a light concentrating device for focusing the filtered light
  • the light concentrating device is provided in the vacuum chamber.
  • the light concentrating module according to item 9 wherein the light concentrating device comprises a plurality of bar-type convex lenses.
  • At least one receiving mirror for receiving the filtered light
  • a concave mirror for focusing the filtered light from the receiving mirror.
  • UV light device for curing a coating
  • an UV light source for emitting light comprising essentially UV light
  • a light concentrating module according to items 9 to 12 for filtering out infrared light of the focused emitted light from the reflector and for focusing the filtered UV light onto the coating.

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  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Photovoltaic Devices (AREA)

Abstract

Cette invention concerne un ensemble photovoltaïque pour la conversion de l'énergie solaire. L'ensemble photovoltaïque comprend un élément de filtrage infrarouge pour filtrer la lumière infrarouge, un dispositif de concentration de lumière pour focaliser la lumière filtrée, un panneau solaire comprenant une pluralité de cellules solaires pour convertir la lumière focalisée en énergie électrique, et une chambre à vide pour isolation thermique. Le dispositif de concentration de lumière est disposé dans la chambre à vide.
PCT/IB2018/053682 2017-05-24 2018-05-24 Panneau solaire amélioré WO2018215963A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1708275.1 2017-05-24
GB1708275.1A GB2562751A (en) 2017-05-24 2017-05-24 Improved solar panel

Publications (1)

Publication Number Publication Date
WO2018215963A1 true WO2018215963A1 (fr) 2018-11-29

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Citations (5)

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Publication number Priority date Publication date Assignee Title
US6363928B1 (en) * 2000-04-04 2002-04-02 Alternative Energy Group, Inc. Solar collection system
US20100288332A1 (en) * 2009-05-12 2010-11-18 Entech Solar, Inc. Solar photovoltaic concentrator panel
US8227686B2 (en) * 2009-02-04 2012-07-24 Honeywell International Inc. Quantum dot solar cell
CN104190606A (zh) * 2014-08-01 2014-12-10 张瑜 一种uv固化灯及其应用
US9423533B2 (en) * 2010-04-26 2016-08-23 Guardian Industries Corp. Patterned glass cylindrical lens arrays for concentrated photovoltaic systems, and/or methods of making the same

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Publication number Priority date Publication date Assignee Title
US5658448A (en) * 1992-11-25 1997-08-19 Lasich; John Beavis Production of hydrogen from solar radiation at high efficiency
DE102006002465A1 (de) * 2006-01-18 2007-07-26 Solartec Ag Konzentrator-Photovoltaik-Vorrichtung mit Positionierungshilfe
US20100012171A1 (en) * 2008-03-05 2010-01-21 Ammar Danny F High efficiency concentrating photovoltaic module with reflective optics
EP2375456A1 (fr) * 2009-03-06 2011-10-12 Suinno Solar Oy Cellule solaire à faible coût
US20110247678A1 (en) * 2010-04-09 2011-10-13 Fan Jong-Hwua Willy Concentrated photovoltaic module and photovoltaic array module having the same
US20120152315A1 (en) * 2010-12-16 2012-06-21 Yi Pang Solar energy collector

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6363928B1 (en) * 2000-04-04 2002-04-02 Alternative Energy Group, Inc. Solar collection system
US8227686B2 (en) * 2009-02-04 2012-07-24 Honeywell International Inc. Quantum dot solar cell
US20100288332A1 (en) * 2009-05-12 2010-11-18 Entech Solar, Inc. Solar photovoltaic concentrator panel
US9423533B2 (en) * 2010-04-26 2016-08-23 Guardian Industries Corp. Patterned glass cylindrical lens arrays for concentrated photovoltaic systems, and/or methods of making the same
CN104190606A (zh) * 2014-08-01 2014-12-10 张瑜 一种uv固化灯及其应用

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GB201708275D0 (en) 2017-07-05

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