WO2008038522A1 - Solar energy collection type photovoltaic generation unit and solar energy collection type photovoltaic generation device - Google Patents

Solar energy collection type photovoltaic generation unit and solar energy collection type photovoltaic generation device Download PDF

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Publication number
WO2008038522A1
WO2008038522A1 PCT/JP2007/067798 JP2007067798W WO2008038522A1 WO 2008038522 A1 WO2008038522 A1 WO 2008038522A1 JP 2007067798 W JP2007067798 W JP 2007067798W WO 2008038522 A1 WO2008038522 A1 WO 2008038522A1
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WO
WIPO (PCT)
Prior art keywords
power generation
solar power
generation unit
concentrating solar
vent hole
Prior art date
Application number
PCT/JP2007/067798
Other languages
French (fr)
Japanese (ja)
Inventor
Hiroyuki Yoshida
Original Assignee
Sharp Kabushiki Kaisha
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sharp Kabushiki Kaisha filed Critical Sharp Kabushiki Kaisha
Publication of WO2008038522A1 publication Critical patent/WO2008038522A1/en

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Classifications

    • 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
    • H01L31/052—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
    • H01L31/0521—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 using a gaseous or a liquid coolant, e.g. air flow ventilation, water circulation
    • 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
    • H02S20/10—Supporting structures directly fixed to the ground
    • 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

Definitions

  • the present invention relates to a concentrating solar power generation unit including a solar cell arranged in correspondence with the bottom of a long frame, and a concentrating type configured by juxtaposing such concentrating solar power generation units.
  • the present invention relates to a solar power generation device.
  • Solar power generation devices solar power generation units that convert solar energy into electric power have been put into practical use, but in order to reduce costs and obtain even higher power, the light is collected with a condensing lens.
  • a concentrating solar power generation device condensing solar power generation unit that uses sunlight to irradiate solar cell elements that are smaller than the light receiving area of the condensing lens to extract electric power is being put into practical use.
  • a concentrating solar power generation device condenses sunlight with a condenser lens and irradiates the solar cell element, the solar cell element receives sunlight collected by the optical system. It is sufficient to provide a small light receiving area.
  • the size of the solar cell element can be reduced, so that the solar cell element that is an expensive component in the solar power generation device is used. The amount can be reduced, and the cost can be reduced. Because of these advantages, concentrating solar power generation devices are being used for power supply in areas where power can be generated using a large area.
  • Patent Document 1 JP-A-11 284217
  • the concentrating solar power generation device described in Patent Document 1 has a complicated and large heat dissipation structure, which complicates the production process. Therefore, in terms of mass productivity, installation workability, maintenance management, etc. There is a problem.
  • air permeability to the solar cell module and lens frame is not taken into consideration, the solar cell module with a large heat storage effect due to the concentrated sunlight becomes high temperature, reducing the photoelectric conversion efficiency, etc. May cause problems with sex.
  • the present invention has been made in view of such a situation.
  • a vent in the longitudinal end of a long frame on which a solar cell is mounted high heat dissipation is achieved with a simple structure.
  • the objective is to provide a concentrating solar power generation unit that ensures high heat resistance and achieves high reliability and power generation efficiency.
  • the present invention is simplified by adopting a configuration in which a positioning pin provided on a translucent protective plate to which a condensing lens is joined is fitted to a pin fitting portion provided on a side portion of a long frame.
  • a concentrating solar power generation unit that achieves high reliability and power generation efficiency by aligning the condensing lens with a solar cell with high accuracy, preventing unnecessary temperature rise and improving heat resistance For other purposes.
  • the present invention has a simple structure by juxtaposing a plurality of concentrating solar power generation units each provided with a vent at the longitudinal end of the long frame in the short direction of the long frame.
  • Another object is to provide a concentrating solar power generation system that achieves high reliability and power generation efficiency by ensuring heat radiation and improving heat resistance.
  • a concentrating photovoltaic power generation unit has a long frame having a side portion and a bottom portion.
  • a solar cell disposed corresponding to the bottom portion, and a condensing lens disposed corresponding to the top surface of the side portion for condensing and irradiating sunlight to the solar cell.
  • An optical solar power generation unit characterized in that a vent hole is provided at an end in a longitudinal direction of the elongated frame.
  • the vent hole is formed in the bottom portion.
  • vent is located at the bottom of the concentrating photovoltaic power generation unit, it is possible to reliably prevent the entry of wind and rain, dust and the like from the outside, and weather resistance (rain resistance, A highly reliable concentrating solar power generation unit with good moisture resistance and dust resistance) can be obtained.
  • the vent hole is formed in both the end portions corresponding in the longitudinal direction.
  • the concentrating solar power generation unit according to the present invention is characterized in that it includes a vent hole covering portion that covers the vent hole.
  • the vent hole covering portion includes a filter.
  • the vent hole covering portions are mutually It is characterized by providing an air passage in which slats facing each other are alternately arranged.
  • the elongated frame includes a partition plate arranged perpendicular to the side portion and the bottom portion.
  • the partition plate has a ventilation notch.
  • the concentrating solar power generation unit includes a long frame having a side portion and a bottom portion, a solar cell disposed corresponding to the bottom portion, and sunlight to the solar cell.
  • a concentrating solar power generation unit provided with a condensing lens for condensing and irradiating and having a translucent protective plate fixed to the top surface of the side portion, and corresponds to the center of the condensing lens
  • the positioning pins that are positioned and provided on the edge of the translucent protective plate are fitted into pin fitting portions formed on the top surface.
  • the condensing lens (translucent protective plate) can be easily and accurately positioned on the solar cell (elongated frame), so the collected solar light is irradiated onto the solar cell with high accuracy. It is possible to improve the heat resistance and power generation efficiency by preventing unnecessary temperature rise.
  • the concentrating solar power generation device is configured by arranging a plurality of concentrating solar power generation units each having a long frame in the lateral direction of the long frame.
  • the lateral direction is a horizontal direction.
  • the vent hole is provided at the end in the longitudinal direction of the long frame on which the solar cell is mounted, high heat dissipation is achieved with a simple structure. It has the effect of ensuring heat resistance and ensuring high reliability and power generation efficiency.
  • the positioning pin provided on the translucent protective plate to which the condensing lens is joined is fitted with the pin fitting provided on the side of the long frame. Because it is configured to fit in the joint, the condenser lens is positioned with high accuracy with a simple structure, prevents unnecessary temperature rise and improves heat resistance, and has high reliability and power generation efficiency. If this is realized, the effect will be achieved.
  • the concentrating solar power generation unit including the vent hole at the end in the longitudinal direction of the long frame is connected to the short side of the long frame. Since multiple devices are juxtaposed in the direction, a simple structure ensures high heat dissipation, improves heat resistance, and achieves high V, reliability, and power generation efficiency.
  • FIG. 1 is an exploded perspective view showing a main part of a concentrating solar power generation unit according to Embodiment 1 of the present invention in an exploded manner.
  • FIG. 2 is an explanatory diagram conceptually explaining improvement in air permeability in a tracking state in which the concentrating solar power generation unit shown in FIG. 1 is operated as a vertical type.
  • FIG. 3 is a plan view showing an embodiment of a vent hole applied to the long frame of the concentrating solar power generation unit shown in FIG. 1.
  • FIG. 4 is a perspective view conceptually illustrating a state in which a vent hole covering portion is provided corresponding to the vent hole shown in FIG.
  • FIG. 5 is a cross-sectional view showing a state where the vent hole covering portion shown in FIG. 4 includes a filter.
  • FIG. 6 A modified example of the vent hole covering portion shown in FIG. 4 is described.
  • FIG. 6 (A) is a collection similar to FIG. Sectional view of the vent covering section showing the action of the vent covering section in the tracking state when the photovoltaic solar power unit is operated as a vertical type
  • Fig. 6 (B) is a pause when tracking of Fig. 6 (A) is stopped
  • FIG. 6 is a cross-sectional view of the vent hole covering portion showing the action of the vent hole covering portion in the state.
  • FIG. 7 illustrates a main part of the concentrating solar power generation device according to Embodiment 2 of the present invention.
  • FIG. 7 (A) is a front view showing the top surface side of the concentrating solar power generation unit.
  • Fig. 7 (B) is a side view.
  • FIG. 8 is an exploded perspective view for explaining a fitting form of a positioning pin applied to positioning a translucent protective plate and a side part of a concentrating solar power generation unit according to Embodiment 3 of the present invention.
  • FIG. 9 A cross section through the center of the positioning pin shown in Fig. 8 is shown.
  • Fig. 9 (A) is a cross-sectional view in the short direction of the long frame
  • Fig. 9 (B) is a long shape.
  • a cross-sectional view in the longitudinal direction of the frame shows a state in which the side portion is viewed from the inside of the long frame
  • FIG. 9C is an enlarged cross-sectional view of the positioning pin.
  • a concentrating solar power generation unit according to Embodiment 1 of the present invention will be described with reference to FIGS.
  • FIG. 1 is an exploded perspective view showing the main part of the concentrating solar power generation unit according to Embodiment 1 of the present invention in an exploded manner.
  • FIG. 2 is an explanatory diagram for conceptually explaining the improvement of air permeability in the tracking state in which the concentrating solar power generation unit shown in FIG. 1 is operated as a vertical type.
  • FIG. 3 is a plan view showing an embodiment of a vent hole applied to the long frame of the concentrating solar power generation unit shown in FIG.
  • the concentrating solar power generation unit 40 is a concentrating solar power generation unit.
  • 40 translucent protection plate 41 that protects the top surface
  • long frame 44 that is the basic structure of the concentrating solar power generation unit 40
  • solar cell mounting plate 47 that mounts multiple solar cells 10 .
  • a condensing lens 42 that condenses sunlight is provided, for example, by bonding.
  • the translucent protective plate 41 and the solar cell mounting plate 47 are long in a state of being divided into, for example, three pieces in consideration of heat resistance, thermal expansion, productivity, reliability, maintenance and management, etc. It is arranged corresponding to the shaped frame 44 .
  • the translucent protective plate 41 and the solar cell mounting plate 47 are arranged to correspond to each other in order to improve heat resistance and enable high-precision light collection. That is, the lens group unit region 103 constituted by the translucent protective plate 41 and the mounting unit region 101 constituted by the solar cell mounting plate 47 are arranged corresponding to each other.
  • the long frame 44 has a U-shape including a side portion 441 and a bottom portion 444.
  • An edge 442 of the top surface of the long frame 44 (the top surface of the side portion 441) is configured to fix and hold the translucent protective plate 41. That is, the translucent protective plate 41 is fixed to the top surface (the edge 442) of the side portion 441.
  • the side portion 441 is adjusted to a height that allows the solar cell 10 to correspond to the focal length of the condenser lens 42. That is, the condensing lens 42 is arranged corresponding to the edge 442.
  • the bottom portion 444 is configured to hold a pair of opposing side portions 441 and attach the solar cell mounting plate 47 on which the solar cell 10 is mounted to the back surface (opposite the long frame 44).
  • the translucent protective plate 41 is made of, for example, glass in consideration of translucency, strength, environmental resistance, and the like, and can eliminate the influence of wind and rain from the surrounding environment. It is also possible to use acrylic resin or polycarbonate instead of glass.
  • a plurality of condensing lenses 42 are arranged in a row on the translucent protective plate 41 corresponding to the solar cell 10, and a lens array (for example, 2 ⁇ X) corresponding to the long lens group unit region 103. 10 of 5).
  • the condenser lens 42 is bonded to the translucent protective plate 41 with an appropriate adhesive.
  • the condensing lens 42 is made of, for example, an acrylic resin in consideration of processability and translucency. Polycarbonate, glass, etc. can be used instead of acrylic resin.
  • the long frame 44 is formed by, for example, roll forming a metal plate such as an iron plate or a steel plate. Thus, the whole including the side portion 441 and the bottom portion 444 is integrally formed. Further, a sunlight irradiation hole (not shown) for irradiating the solar cell 10 with sunlight condensed by the condenser lens 42 is formed in the bottom portion 444.
  • the long frame 44 can be made of a metal plate such as an iron plate or steel plate to ensure mechanical strength and weather resistance.
  • the solar cell mounting plate 47 has a long shape corresponding to the translucent protection plate 41, and a plurality of solar cells 10 are mounted in a row in the length direction, and the long mounting unit region 101 has The solar cell array (for example, 2 x 5 10 pieces) is configured correspondingly.
  • the solar cell mounting plate 47 is made of, for example, an aluminum plate in consideration of weight reduction and heat dissipation. Note that the solar cell 10 (solar cell element 11) has a center of the condensing unit region 102 for each condensing unit region 102 corresponding to the condensing lens 42 (the focal position of the collected sunlight: It is arranged corresponding to the light irradiation hole).
  • the solar cell 10 is configured by placing the solar cell element 11 on a receiver substrate 20 that ensures heat dissipation and insulation. Further, an appropriate border 471 for mounting on the bottom portion 444 is formed around the solar cell mounting plate 47.
  • the end face portion 445 is formed by covering the longitudinal end of the long frame 44 with an appropriate plate member.
  • the end face portion 445 improves the strength of the long frame 44 (U-shaped shape), and also protects the solar cell 10 by shielding the inside of the long frame 44 from the outside, thereby concentrating solar cells. Improve the reliability of the photovoltaic unit 40.
  • the elongated frame 44 is provided with a vent 446 at an end in the longitudinal direction. By providing it at the end in the longitudinal direction, an air flow can be generated inside the long frame 44 to improve heat dissipation (that is, heat resistance).
  • the vent hole 446 is preferably provided in the bottom portion 444, but may be appropriately provided in the side portion 441 and the end surface portion 445.
  • the vent hole 446 is positioned at the bottom part of the concentrating solar power generation unit 40 and reliably prevents the entry of wind and rain, dust, etc. from the outside. Therefore, it is possible to obtain a highly reliable, concentrating solar power generation unit 40 with good weather resistance (rain resistance, moisture resistance, dust resistance, etc.).
  • the elongated frame 44 is a partition arranged perpendicular to the side portion 441 and the bottom portion 444.
  • a plate 451 is preferably provided.
  • the partition plate 451 can be easily joined to the side portion 441 by welding, rivets or the like.
  • the partition plate 451 makes it possible to accurately define the cross-sectional shape of the long frame 44 in the short direction, improving the strength of the long frame 44 and the light collection accuracy of the condensing lens 42 to generate power. Efficiency and reliability can be improved.
  • the partition plate 451 is disposed at a position corresponding to the mounting unit region 101 and the lens group unit region 103, so that the translucent protective plate 41, the solar cell mounting plate 47, and the long frame 44 are disposed. Thus, it is possible to improve the position accuracy and the coupling strength with high-precision light collection.
  • the partition plate 451 preferably has a ventilation notch 452.
  • the air permeability heat dissipation
  • the concentrating photovoltaic power generation unit 40 arranged as a vertical type is supported by the support column 81, is in a tracking state in the operating state, and is inclined because it faces the sunlight 202 by the tracking mechanism 82. State ( Figure 2). That is, the concentrating solar power generation unit 40 arranged as a vertical type reliably generates an air flow (flow path 201) because the longitudinal direction of the long frame 44 is the vertical direction (vertical direction).
  • the air flow (flow path 201) is generated inside the elongated frame 44 by the vent hole 446, the air permeability can be reliably improved. Therefore, the temperature rise of the solar cell 10 arranged corresponding to the bottom portion 444 can be prevented uniformly and effectively, and the temperature rise of the solar cell 10 due to the concentrated sunlight 202 can be prevented to generate power. Improve efficiency and reliability with power S.
  • the air holes 446 are preferably formed at both ends (both ends) corresponding to the longitudinal direction of the long frame 44 in order to generate the air flow indicated by the flow path 201.
  • the concentrating solar power generation unit 40 is preferably arranged as a vertical type, but can also be arranged as a horizontal type.
  • the vent hole 446 is configured by a large number of through holes formed at both end portions of the bottom portion 444 (FIG. 3). The size, density, number, etc. of the through-holes effectively generate the flow path 201 in consideration of the strength of the long frame 44 and the rating of the solar cell 10 mounted on the solar cell mounting plate 47. It is possible to appropriately set the air hole 446.
  • FIG. 4 is a perspective view conceptually illustrating a state in which a vent hole covering portion is provided corresponding to the vent hole shown in FIG.
  • FIG. 5 is a cross-sectional view showing a state in which the vent hole covering portion shown in FIG. 4 includes a filter.
  • the air holes 446 are formed of a large number of through holes, there is a risk that wind and rain, dust, etc. may invade from the outside.
  • the long frame 44 includes a vent hole covering portion 447 that covers the vent hole 446.
  • the vent hole covering portion 447 can be formed of, for example, a plate material bent into a U shape. It is joined to the back surface of the bottom portion 444 by, for example, screwing or welding so as to cover the plate material (vent hole covering portion 447) force S folded into a U-shape and the vent hole 446.
  • the vent hole covering portion 447 may be less effective against a force S that can prevent external wind and rain, dust and the like to some extent, strong wind and rain, and fine dust particles.
  • the vent hole covering portion 447 preferably includes a filter 448.
  • the finoleta 448 is configured by, for example, appropriately arranging a strong weather-resistant material (for example, a corrosion-resistant metal) in a space between the bottom portion 444 (the vent hole 446) and the vent hole covering portion 447. Is possible. With this configuration, it is possible to reliably prevent the inside of the long frame 44 from entering the interior of the long frame 44 even against strong wind and rain that does not obstruct the airflow in the flow path 201, fine dust particles, etc. The reliability of the unit 40 can be further improved.
  • a strong weather-resistant material for example, a corrosion-resistant metal
  • FIGS. 6 (A) and 6 (B) illustrate a modification of the vent hole covering portion shown in FIG. 4.
  • FIG. 6 (A) is similar to FIG. Sectional view of the vent hole covering part showing the action of the vent hole covering part in the tracking state when the power generation unit is operated as a vertical type, FIG. 6 (B) is in the dormant state where the tracking of FIG. 6 (A) is stopped. It is sectional drawing of the vent hole covering part which shows the effect
  • the vent hole covering portion 447 includes a vent path 449 configured by alternately arranging blade plates 450 facing each other. Since the blade plates 450 facing each other are alternately arranged, the air passage 449 can be formed in a zigzag shape. The force of forming the air passage 449 in a zigzag shape and the intrusion of the dust 601 carried by the wind 602 entering from the outside toward the air vent 446 can be eliminated by the blades 450.
  • the blade plate 450 acts as a dust-proof wall against the sand dust 601 and the ventilation path. Since the dust 601 is eliminated at the entrance of the 449, it is possible to prevent the dust 601 from entering the inside of the elongated frame 44 through the vent hole 446, and the reliability of the concentrating photovoltaic power generation unit 40 is improved. Improve with S.
  • the vane plate 450 extends from the vent hole 446 to the entrance of the vent passage 449 from the root force to the tip.
  • a concentrating solar power generation device according to Embodiment 2 of the present invention will be described with reference to FIGS. 7 (A) and 7 (B).
  • FIGS. 7A and 7B illustrate a main part of the concentrating solar power generation device according to Embodiment 2 of the present invention
  • FIG. 7B is a front view showing the top side of the solar photovoltaic power generation unit
  • FIG. 7B is a side view.
  • the concentrating solar power generation device 1 includes a plurality of concentrating solar power generation units 40 according to the first embodiment in the short direction of the long frame 44 (for example, nine ) They are arranged side by side.
  • the short direction of the long frame 44 is preferably the horizontal direction as shown in FIG.
  • the concentrating solar power generation unit 40 is arranged in a vertical shape for profit.
  • the concentrating solar power generation device 1 having excellent air permeability, high heat dissipation and improved reliability can be obtained. That is, the flow path 201 in the vertical direction can be configured to increase the air permeability and heat resistance, and the force S can be obtained to obtain higher reliability.
  • the horizontal direction is the short direction, and the short direction can be the vertical direction. Even in this case, since the air holes 446 are provided, it is possible to ensure a certain air permeability.
  • a concentrating solar power generation unit according to Embodiment 3 of the present invention will be described based on FIG. 8 and FIG. 9 (A) to FIG. 9 (C).
  • FIG. 8 is an exploded perspective view for explaining a fitting form of a positioning pin applied to positioning of the translucent protective plate and the side part of the concentrating solar power generation unit according to Embodiment 3 of the present invention. It is. 9 (A) to 9 (C) show a cross section in a plane passing through the center of the positioning pin shown in FIG. 8, and FIG. 9 (A) shows a cross section in the short direction of the long frame.
  • Fig. 9 (B) is a cross-sectional view of the long frame in the longitudinal direction, showing the side viewed from the inside of the long frame, and Fig. 9 (C) is an enlarged cross-sectional view of the positioning pin .
  • the translucent protective plate 41 of the concentrating solar power generation unit 40 is the top surface of the elongated frame 44 (the top surface of the side portion 441). That is, it is fixed to the edge 44 2) and held.
  • the translucent protective plate 41 is provided in advance with a condensing lens 42 that is aligned with the arrangement of the solar cell 10, and the translucent protective plate is provided for the solar cell 10 that is arranged corresponding to the bottom 444. 41 (Condenser lens 42) needs to be fixed to the rim 442 with the correct alignment.
  • a rim 411 is formed around the translucent protective plate 41 corresponding to the rim 442 around the outer periphery (peripheral portion). By bringing the rim 411 and the rim 442 into contact with each other, the translucent protection is provided.
  • the plate 41 is fixed and held on an edge 442 (side portion 441, long frame 44).
  • the alignment between one translucent protective plate 41 and the condensing lenses 42 is made by aligning the ten condensing lenses 42 with the arrangement of the corresponding solar cells 10. This can be done by adhering the condensing lens 42 and the translucent protective plate 41 in a state of being covered.
  • the alignment of the rim 411 and the rim 442 of the translucent protective plate 41 is not easy for the following reasons. That is, since the outer shape becomes large because a large number of the condensing lenses 42 are held, using the outer edge of the translucent protective plate 41 as a reference has a problem in accuracy.
  • the alignment of the translucent protective plate 41 with respect to the solar cell 10 (sunlight irradiation hole: not shown) corresponding to the bottom portion 44 4 is based on the fact that the side portion 441 exists between the solar cell 10 It is difficult because of the distance.
  • the light is collected on the surface (condenser lens mounting surface) facing the edge 442 (the top surface of the side portion 441) of the edge 411.
  • a positioning pin 412 positioned corresponding to the center of the optical lens 421 is provided by bonding.
  • the condensing lens 421 is a condensing lens positioned at the center of the plurality of condensing lenses 42 (lens group unit regions 103) disposed on the translucent protective plate 41. Since the center of the condensing lens 421 arranged in two rows in the short direction of the translucent protective plate 4 1 is used as a reference, the two positioning pins 412 arranged in the longitudinal direction of the translucent protective plate 41 Positioning can be performed with higher accuracy.
  • a pin fitting portion 443 is formed on the edge 442 so as to correspond to the positioning pin 412.
  • the pin fitting portion 443 can be arranged and formed with high accuracy in alignment with the position of the solar cell 10 (sunlight irradiation hole) when the elongated frame 44 is formed.
  • the translucent protective plate 41 (condensing lens 42) is trimmed 442 (side portion 441, elongated frame). Therefore, the translucent protective plate 41 (collecting lens 42) can be aligned with the solar cell 10 with high accuracy.
  • the positioning pin 412 is positioned with reference to the center of the condensing lens 421 previously bonded to the translucent protective plate 41 so as to correspond to the solar cell 10, the solar cell 10 (long frame It is possible to reliably improve the alignment accuracy of the translucent protective plate 41 (condensing lens 42) with respect to the lens 44 ).
  • the positioning pins 412 are bonded firmly to the edge 411 (translucent protective plate 41) with a double-sided tape 413, for example, and then firmly bonded with an adhesive 414 (FIG. 9 (C)).
  • the pin fitting portion 443 can be reliably fitted.
  • the condensing lens 42 can be aligned with the solar cell 10 with high accuracy. Therefore, it is possible to irradiate the solar cell 10 with high accuracy, and it is possible to prevent unnecessary temperature rise and improve heat resistance and power generation efficiency.
  • the present invention can be suitably used for a concentrating solar power generation unit and a concentrating solar power generation device that condenses light with a condensing lens and converts solar energy into electric power.

Abstract

A solar energy collection type photovoltaic generation unit (40) includes a light transmittance protection plate (41) which protects the top surface of a solar energy collection type photovoltaic generation unit (40) to which a collective lens (42) for collecting solar light is bonded; a prolonged-shaped frame (44) serving as a basic structure of the solar energy collection type photovoltaic generation unit (40); and a solar cell mounting plate (47) on which a plurality of solar cells (10) are mounted. The prolonged-shaped frame (44) has an air vent (446) at the end of the prolong direction so as to generate an air current inside the prolonged-shaped frame (44) to improve heat dissipation (i.e., heat resistance).

Description

明 細 書  Specification
集光型太陽光発電ユニットおよび集光型太陽光発電装置  Concentrating solar power generation unit and concentrating solar power generation device
技術分野  Technical field
[0001] 本発明は、長尺状フレームの底部に対応させて配置した太陽電池を備える集光型 太陽光発電ユニットおよびこのような集光型太陽光発電ユニットを並置して構成する 集光型太陽光発電装置に関する。  [0001] The present invention relates to a concentrating solar power generation unit including a solar cell arranged in correspondence with the bottom of a long frame, and a concentrating type configured by juxtaposing such concentrating solar power generation units. The present invention relates to a solar power generation device.
背景技術  Background art
[0002] 太陽エネルギーを電力に変換する太陽光発電装置 (太陽光発電ユニット）が実用 化されているが、低コスト化を実現し、さらに大電力を得るために、集光レンズで集光 した太陽光を集光レンズの受光面積より小さい太陽電池素子に照射して電力を取り 出すタイプの集光型太陽光発電装置 (集光型太陽光発電ユニット）が実用化されつ つある。  [0002] Solar power generation devices (solar power generation units) that convert solar energy into electric power have been put into practical use, but in order to reduce costs and obtain even higher power, the light is collected with a condensing lens. A concentrating solar power generation device (condensing solar power generation unit) that uses sunlight to irradiate solar cell elements that are smaller than the light receiving area of the condensing lens to extract electric power is being put into practical use.
[0003] 集光型の太陽光発電装置は、太陽光を集光レンズで集光して太陽電池素子に照 射することから、太陽電池素子は、光学系で集光された太陽光を受光できる小さい受 光面積を備えれば良い。つまり、集光レンズの受光面積より小さいサイズの太陽電池 素子で良いことから、太陽電池素子のサイズを縮小することができるので、太陽光発 電装置において高価な構成物である太陽電池素子の使用量を減らすことができ、コ ストを低減することが可能となる。このような利点から、集光型太陽光発電装置は、広 大な面積を利用して発電することが可能な地域などで、電力供給用に利用されつつ ある。  [0003] Since a concentrating solar power generation device condenses sunlight with a condenser lens and irradiates the solar cell element, the solar cell element receives sunlight collected by the optical system. It is sufficient to provide a small light receiving area. In other words, since the solar cell element having a size smaller than the light receiving area of the condensing lens may be used, the size of the solar cell element can be reduced, so that the solar cell element that is an expensive component in the solar power generation device is used. The amount can be reduced, and the cost can be reduced. Because of these advantages, concentrating solar power generation devices are being used for power supply in areas where power can be generated using a large area.
[0004] 集光型太陽光発電装置として、太陽電池モジュールを支持板に取り付けると!/、ぅ簡 単な構成により、重量の増大を招くことなく充分な強度、剛性が得られ、放熱性が得 られるようにしたものが提案されている（例えば特許文献 1参照。）。  [0004] As a concentrating solar power generation device, when a solar cell module is attached to a support plate! /, A simple structure provides sufficient strength and rigidity without increasing the weight, and heat dissipation. There is a proposal that can be obtained (see, for example, Patent Document 1).
特許文献 1 :特開平 11 284217号公報  Patent Document 1: JP-A-11 284217
発明の開示  Disclosure of the invention
発明が解決しょうとする課題  Problems to be solved by the invention
[0005] 受光位置での集光によるエネルギーは極めて大きぐ太陽電池素子周辺への照射 による損傷防止対策などが放熱対策として必要である。また、集光型太陽光発電装 置は、砂漠等の温度変化の激しい地域に設置されることもしばしばであり、温度上昇 に対する熱膨張対策も必要である。 [0005] Irradiation around the solar cell element where the energy due to light collection at the light receiving position is extremely large It is necessary to take measures to prevent damage due to the heat dissipation. In addition, concentrating solar power generators are often installed in areas such as deserts where temperature changes are rapid, and countermeasures against thermal expansion are necessary for temperature rise.
[0006] しかし、特許文献 1に記載の集光型太陽光発電装置は、放熱構造が複雑で大型と なり、生産工程が複雑になることから、量産性、設置作業性、保守管理面などでの問 題がある。また、太陽電池モジュール、レンズフレームに対する通気性が考慮されて いないことから、集光された太陽光による蓄熱作用が大きぐ太陽電池モジュールが 高温になり、光電変換効率を低下させるなど耐熱性、信頼性に問題が生じる恐れが ある。 [0006] However, the concentrating solar power generation device described in Patent Document 1 has a complicated and large heat dissipation structure, which complicates the production process. Therefore, in terms of mass productivity, installation workability, maintenance management, etc. There is a problem. In addition, since air permeability to the solar cell module and lens frame is not taken into consideration, the solar cell module with a large heat storage effect due to the concentrated sunlight becomes high temperature, reducing the photoelectric conversion efficiency, etc. May cause problems with sex.
[0007] すなわち、確実に太陽光から電力を取り出す信頼性の高い集光型太陽光発電装 置 (集光型太陽光発電ユニット）とするために、太陽電池素子の実装、太陽電池素子 と光学系との間の位置関係の調整などにおいて、熱、集光に対する適切な対策を施 すことが極めて重要である。  [0007] That is, in order to obtain a highly reliable concentrating solar power generation device (concentrating solar power generation unit) that reliably extracts power from sunlight, mounting of solar cell elements, solar cell elements and optics In adjusting the positional relationship with the system, it is extremely important to take appropriate measures against heat and light collection.
[0008] 本発明はこのような状況に鑑みてなされたものであり、太陽電池を実装した長尺状 フレームの長手方向の端部に通気孔を備えることにより、簡単な構造で高い放熱性 を確保して耐熱性を向上させ、高い信頼性と発電効率を実現する集光型太陽光発 電ユニットを提供することを目的とする。  [0008] The present invention has been made in view of such a situation. By providing a vent in the longitudinal end of a long frame on which a solar cell is mounted, high heat dissipation is achieved with a simple structure. The objective is to provide a concentrating solar power generation unit that ensures high heat resistance and achieves high reliability and power generation efficiency.
[0009] 本発明は、集光レンズを接合した透光性保護板に設けた位置決めピンを、長尺状 フレームの側部に設けたピン嵌合部に嵌合する構成とすることにより、簡単な構造で 集光レンズを太陽電池に高精度で位置合わせし、不要な温度上昇を防止して耐熱 性を向上させ、高い信頼性と発電効率を実現する集光型太陽光発電ユニットを提供 することを他の目的とする。  [0009] The present invention is simplified by adopting a configuration in which a positioning pin provided on a translucent protective plate to which a condensing lens is joined is fitted to a pin fitting portion provided on a side portion of a long frame. Provide a concentrating solar power generation unit that achieves high reliability and power generation efficiency by aligning the condensing lens with a solar cell with high accuracy, preventing unnecessary temperature rise and improving heat resistance For other purposes.
[0010] 本発明は、長尺状フレームの長手方向の端部に通気孔を備える集光型太陽光発 電ユニットを長尺状フレームの短手方向に複数並置することにより、簡単な構造で高 [0010] The present invention has a simple structure by juxtaposing a plurality of concentrating solar power generation units each provided with a vent at the longitudinal end of the long frame in the short direction of the long frame. High
V、放熱性を確保して耐熱性を向上させ、高!/、信頼性と発電効率を実現する集光型 太陽光発電装置を提供することを他の目的とする。 Another object is to provide a concentrating solar power generation system that achieves high reliability and power generation efficiency by ensuring heat radiation and improving heat resistance.
課題を解決するための手段  Means for solving the problem
[0011] 本発明に係る集光型太陽光発電ユニットは、側部および底部を有する長尺状フレ ームと、前記底部に対応して配置された太陽電池と、前記側部の頂面に対応して配 置され前記太陽電池に太陽光を集光して照射する集光レンズとを備える集光型太陽 光発電ユニットであって、前記長尺状フレームの長手方向の端部に通気孔を備える ことを特徴とする。 [0011] A concentrating photovoltaic power generation unit according to the present invention has a long frame having a side portion and a bottom portion. A solar cell disposed corresponding to the bottom portion, and a condensing lens disposed corresponding to the top surface of the side portion for condensing and irradiating sunlight to the solar cell. An optical solar power generation unit, characterized in that a vent hole is provided at an end in a longitudinal direction of the elongated frame.
[0012] この構成により、簡単な構造で長尺状フレームの内部に気流を発生させて通気性 を向上させ、放熱性、耐熱性を向上できることから、集光された太陽光による太陽電 池の温度上昇を防止して発電効率および信頼性を向上させることができる。  [0012] With this configuration, an air flow can be generated inside the long frame with a simple structure to improve the air permeability and improve the heat dissipation and heat resistance. The temperature rise can be prevented and the power generation efficiency and reliability can be improved.
[0013] また、本発明に係る集光型太陽光発電ユニットでは、前記通気孔は、前記底部に 形成してあることを特徴とする。  [0013] In the concentrating solar power generation unit according to the present invention, the vent hole is formed in the bottom portion.
[0014] この構成により、通気孔は集光型太陽光発電ユニットの底部に位置することから、 外部からの風雨、砂塵などの浸入を確実に防止することが可能となり、耐候性（耐雨 性、耐湿性、耐塵性など）が良ぐ信頼性の高い集光型太陽光発電ユニットとすること ができる。  [0014] With this configuration, since the vent is located at the bottom of the concentrating photovoltaic power generation unit, it is possible to reliably prevent the entry of wind and rain, dust and the like from the outside, and weather resistance (rain resistance, A highly reliable concentrating solar power generation unit with good moisture resistance and dust resistance) can be obtained.
[0015] また、本発明に係る集光型太陽光発電ユニットでは、前記通気孔は、前記長手方 向で対応する両方の前記端部に形成してあることを特徴とする。  [0015] Further, in the concentrating solar power generation unit according to the present invention, the vent hole is formed in both the end portions corresponding in the longitudinal direction.
[0016] この構成により、長尺状フレームの両方の端部間を通過する気流を発生させること から、通気性を確実に向上させることが可能となり、長尺状フレームの全長にわたつ て太陽電池の温度上昇を均一に防止することができる。 [0016] With this configuration, since airflow passing between both ends of the long frame is generated, it is possible to improve air permeability with certainty, and the solar frame over the entire length of the long frame. The temperature rise of the battery can be prevented uniformly.
[0017] また、本発明に係る集光型太陽光発電ユニットでは、前記通気孔を被覆する通気 孔被覆部を備えることを特徴とする。 [0017] Further, the concentrating solar power generation unit according to the present invention is characterized in that it includes a vent hole covering portion that covers the vent hole.
[0018] この構成により、風雨、砂塵などが通気孔から長尺状フレームの内部へ浸入するこ とを防止できることから、さらに耐候性を向上させて、信頼性を向上させることができる [0018] With this configuration, it is possible to prevent wind and rain, dust, and the like from entering the inside of the long frame from the air vents, so that weather resistance can be further improved and reliability can be improved.
[0019] また、本発明に係る集光型太陽光発電ユニットでは、前記通気孔被覆部は、フィル タを備えることを特 ί毁とする。 [0019] Further, in the concentrating solar power generation unit according to the present invention, the vent hole covering portion includes a filter.
[0020] この構成により、通気孔から風雨、砂塵などが浸入することを確実に防止できること から、さらに耐候性を向上させることが可能となり、信頼性を向上させることができる。 [0020] With this configuration, it is possible to reliably prevent intrusion of wind and rain, dust, and the like from the vent hole, so that weather resistance can be further improved and reliability can be improved.
[0021] また、本発明に係る集光型太陽光発電ユニットでは、前記通気孔被覆部は、相互 に対向する羽根板を交互に配置した通気路を備えることを特徴とする。 [0021] Further, in the concentrating solar power generation unit according to the present invention, the vent hole covering portions are mutually It is characterized by providing an air passage in which slats facing each other are alternately arranged.
[0022] この構成により、通気路をジグザグ状とすることができることから、砂塵が外部から通 気孔へ進入することを確実かつ容易に防止することが可能となり、信頼性を向上させ ること力 Sでさる。 [0022] With this configuration, since the air passage can be formed in a zigzag shape, it is possible to reliably and easily prevent dust from entering the air holes from the outside, and to improve reliability S I'll do it.
[0023] また、本発明に係る集光型太陽光発電ユニットでは、前記長尺状フレームは、前記 側部および前記底部に対して垂直に配置された仕切り板を備えることを特徴とする。  [0023] Further, in the concentrating solar power generation unit according to the present invention, the elongated frame includes a partition plate arranged perpendicular to the side portion and the bottom portion.
[0024] この構成により、長尺状フレームの短手方向での断面形状を正確かつ強固に画定 することにより、長尺状フレームの強度、集光レンズの集光精度を向上させて、発電 効率、信頼性を向上させることが可能となる。  [0024] With this configuration, the cross-sectional shape in the short direction of the long frame is accurately and firmly defined, thereby improving the strength of the long frame and the light collection accuracy of the condensing lens, thereby improving the power generation efficiency. It becomes possible to improve reliability.
[0025] また、本発明に係る集光型太陽光発電ユニットでは、前記仕切り板は、通気用切り 欠きを有することを特徴とする。  [0025] Further, in the concentrating solar power generation unit according to the present invention, the partition plate has a ventilation notch.
[0026] この構成により、仕切り板を設けた場合でも、通気性を確保することが可能となる。  With this configuration, even when a partition plate is provided, it is possible to ensure air permeability.
[0027] また、本発明に係る集光型太陽光発電ユニットは、側部および底部を有する長尺 状フレームと、前記底部に対応して配置された太陽電池と、該太陽電池に太陽光を 集光して照射する集光レンズが設けられ前記側部の頂面に固定された透光性保護 板とを備える集光型太陽光発電ユニットであって、前記集光レンズの中心に対応して 位置決めされ前記透光性保護板の縁取りに設けられた位置決めピンが、前記頂面 に形成されたピン嵌合部に嵌合してあることを特徴とする。  [0027] Further, the concentrating solar power generation unit according to the present invention includes a long frame having a side portion and a bottom portion, a solar cell disposed corresponding to the bottom portion, and sunlight to the solar cell. A concentrating solar power generation unit provided with a condensing lens for condensing and irradiating and having a translucent protective plate fixed to the top surface of the side portion, and corresponds to the center of the condensing lens The positioning pins that are positioned and provided on the edge of the translucent protective plate are fitted into pin fitting portions formed on the top surface.
[0028] この構成により、集光レンズ (透光性保護板)を高精度で容易に太陽電池 (長尺状 フレーム）に位置決めできることから、集光された太陽光を高精度に太陽電池に照射 することが可能となり、不要な温度上昇を防止して耐熱性と発電効率を向上させるこ とが可能となる。  [0028] With this configuration, the condensing lens (translucent protective plate) can be easily and accurately positioned on the solar cell (elongated frame), so the collected solar light is irradiated onto the solar cell with high accuracy. It is possible to improve the heat resistance and power generation efficiency by preventing unnecessary temperature rise.
[0029] また、本発明に係る集光型太陽光発電装置は、長尺状フレームを備える集光型太 陽光発電ユニットを前記長尺状フレームの短手方向に複数並置して構成してある集 光型太陽光発電装置であって、前記集光型太陽光発電ユニットは、本発明に係る集 光型太陽光発電ユニットであることを特徴とする。  [0029] Further, the concentrating solar power generation device according to the present invention is configured by arranging a plurality of concentrating solar power generation units each having a long frame in the lateral direction of the long frame. A concentrating solar power generation device, wherein the concentrating solar power generation unit is a concentrating solar power generation unit according to the present invention.
[0030] この構成により、通気性を確保して、放熱性、耐熱性を向上させることから、信頼性 、発電効率を向上させることが可能となる。 [0031] また、本発明に係る集光型太陽光発電装置では、前記短手方向は、水平方向であ ることを特徴とする。 [0030] With this configuration, air permeability is ensured and heat dissipation and heat resistance are improved, so that reliability and power generation efficiency can be improved. [0031] Further, in the concentrating solar power generation device according to the present invention, the lateral direction is a horizontal direction.
[0032] この構成により、長尺状フレームの長手方向を垂直方向に対応させることから、通 気性をさらに大きくすることが可能となり、さらに高い信頼性を得ることができる。 発明の効果  [0032] With this configuration, since the longitudinal direction of the long frame corresponds to the vertical direction, the air permeability can be further increased, and higher reliability can be obtained. The invention's effect
[0033] 本発明に係る集光型太陽光発電ユニットによれば、太陽電池を実装した長尺状フ レームの長手方向の端部に通気孔を備えることから、簡単な構造で高い放熱性を確 保して耐熱性を向上させ、高い信頼性と発電効率を実現するという効果を奏する。  [0033] According to the concentrating solar power generation unit according to the present invention, since the vent hole is provided at the end in the longitudinal direction of the long frame on which the solar cell is mounted, high heat dissipation is achieved with a simple structure. It has the effect of ensuring heat resistance and ensuring high reliability and power generation efficiency.
[0034] また、本発明に係る集光型太陽光発電ユニットによれば、集光レンズを接合した透 光性保護板に設けた位置決めピンを、長尺状フレームの側部に設けたピン嵌合部に 嵌合する構成とすることから、簡単な構造で集光レンズを太陽電池に高精度で位置 合わせし、不要な温度上昇を防止して耐熱性を向上させ、高い信頼性と発電効率を 実現するとレ、う効果を奏する。  [0034] Further, according to the concentrating solar power generation unit according to the present invention, the positioning pin provided on the translucent protective plate to which the condensing lens is joined is fitted with the pin fitting provided on the side of the long frame. Because it is configured to fit in the joint, the condenser lens is positioned with high accuracy with a simple structure, prevents unnecessary temperature rise and improves heat resistance, and has high reliability and power generation efficiency. If this is realized, the effect will be achieved.
[0035] また、本発明に係る集光型太陽光発電装置によれば、長尺状フレームの長手方向 の端部に通気孔を備える集光型太陽光発電ユニットを長尺状フレームの短手方向に 複数並置することから、簡単な構造で高い放熱性を確保して耐熱性を向上させ、高 V、信頼性と発電効率を実現するとレ、う効果を奏する。  [0035] Further, according to the concentrating solar power generation device according to the present invention, the concentrating solar power generation unit including the vent hole at the end in the longitudinal direction of the long frame is connected to the short side of the long frame. Since multiple devices are juxtaposed in the direction, a simple structure ensures high heat dissipation, improves heat resistance, and achieves high V, reliability, and power generation efficiency.
図面の簡単な説明  Brief Description of Drawings
[0036] [図 1]本発明の実施の形態 1に係る集光型太陽光発電ユニットの主要部を分解して 示す分解斜視図である。  FIG. 1 is an exploded perspective view showing a main part of a concentrating solar power generation unit according to Embodiment 1 of the present invention in an exploded manner.
[図 2]図 1に示した集光型太陽光発電ユニットを縦型として稼動させた追尾状態での 通気性の向上を概念的に説明する説明図である。  FIG. 2 is an explanatory diagram conceptually explaining improvement in air permeability in a tracking state in which the concentrating solar power generation unit shown in FIG. 1 is operated as a vertical type.
[図 3]図 1で示した集光型太陽光発電ユニットの長尺状フレームに適用した通気孔の 実施例を示す平面図である。  FIG. 3 is a plan view showing an embodiment of a vent hole applied to the long frame of the concentrating solar power generation unit shown in FIG. 1.
[図 4]図 3で示した通気孔に対応させて通気孔被覆部を設けた状態を概念的に説明 する斜視図である。  FIG. 4 is a perspective view conceptually illustrating a state in which a vent hole covering portion is provided corresponding to the vent hole shown in FIG.
[図 5]図 4で示した通気孔被覆部がフィルタを備えた状態を示す断面図である。  FIG. 5 is a cross-sectional view showing a state where the vent hole covering portion shown in FIG. 4 includes a filter.
[図 6]図 4で示した通気孔被覆部の変形例を説明しており、図 6 (A)は図 2と同様に集 光型太陽光発電ユニットを縦型として稼動させた追尾状態での通気孔被覆部の作用 を示す通気孔被覆部の断面図、図 6 (B)は図 6 (A)の追尾を停止した休止状態での 通気孔被覆部の作用を示す通気孔被覆部の断面図である。 [FIG. 6] A modified example of the vent hole covering portion shown in FIG. 4 is described. FIG. 6 (A) is a collection similar to FIG. Sectional view of the vent covering section showing the action of the vent covering section in the tracking state when the photovoltaic solar power unit is operated as a vertical type, Fig. 6 (B) is a pause when tracking of Fig. 6 (A) is stopped FIG. 6 is a cross-sectional view of the vent hole covering portion showing the action of the vent hole covering portion in the state.
[図 7]本発明の実施の形態 2に係る集光型太陽光発電装置の主要部を説明しており 、図 7 (A)は集光型太陽光発電ユニットの天面側を示す正面図、図 7 (B)は側面図で ある。  FIG. 7 illustrates a main part of the concentrating solar power generation device according to Embodiment 2 of the present invention. FIG. 7 (A) is a front view showing the top surface side of the concentrating solar power generation unit. Fig. 7 (B) is a side view.
[図 8]本発明の実施の形態 3に係る集光型太陽光発電ユニットの透光性保護板と側 部との位置決めに適用する位置決めピンの嵌合形態を説明する分解斜視図である。  FIG. 8 is an exploded perspective view for explaining a fitting form of a positioning pin applied to positioning a translucent protective plate and a side part of a concentrating solar power generation unit according to Embodiment 3 of the present invention.
[図 9]図 8で示した位置決めピンの中心を通る面での断面を示し、図 9 (A)は長尺状 フレームの短手方向での断面図、図 9 (B)は長尺状フレームの長手方向での断面図 で長尺状フレームの内側から側部を見た状態を示し、図 9 (C)は位置決めピンの拡 大断面図である。 [Fig. 9] A cross section through the center of the positioning pin shown in Fig. 8 is shown. Fig. 9 (A) is a cross-sectional view in the short direction of the long frame, and Fig. 9 (B) is a long shape. A cross-sectional view in the longitudinal direction of the frame shows a state in which the side portion is viewed from the inside of the long frame, and FIG. 9C is an enlarged cross-sectional view of the positioning pin.
符号の説明 Explanation of symbols
1 集光型太陽光発電装置  1 Concentrating solar power generator
10 太陽電池  10 Solar cell
11 太陽電池素子  11 Solar cell element
20 レシーバ基板  20 Receiver board
40 集光型太陽光発電ユニット  40 Concentrating solar power generation unit
41 透光性保護板  41 Translucent protective plate
411 縁取り  411 Border
412 位置決めピン  412 Positioning pin
42 集光レンズ  42 condenser lens
44 長尺状フレーム  44 Long frame
441 側部  441 side
442 縁取り  442 Border
443 ピン嵌合部  443 Pin fitting
444 底部  444 Bottom
445 端面部 446 通気孔 445 End face 446 Vent
447 通気孔被覆部  447 Vent cover
448 フイノレタ  448 Huinoleta
449 通気路  449 Airway
450 羽根板  450 slats
451 仕切り板  451 divider
452 通気用切り欠き  452 Notch for ventilation
47 太陽電池実装板  47 Solar cell mounting board
471 縁取り  471 Border
81 支柱  81 prop
82 追尾機構部  82 Tracking mechanism
101 実装単位領域  101 Mounting unit area
102 集光単位領域  102 Condensing unit area
103 レンズ群単位領域  103 Lens unit unit area
201 流路  201 flow path
601 砂塵  601 dust
602 風  602 wind
発明を実施するための最良の形態  BEST MODE FOR CARRYING OUT THE INVENTION
[0038] 以下、本発明の実施の形態を図面に基づいて説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0039] <実施の形態 1〉 <Embodiment 1>
図 1〜図 6を参照しつつ、本発明の実施の形態 1に係る集光型太陽光発電ユニット を説明する。  A concentrating solar power generation unit according to Embodiment 1 of the present invention will be described with reference to FIGS.
[0040] 図 1は、本発明の実施の形態 1に係る集光型太陽光発電ユニットの主要部を分解し て示す分解斜視図である。図 2は、図 1に示した集光型太陽光発電ユニットを縦型と して稼動させた追尾状態での通気性の向上を概念的に説明する説明図である。図 3 は、図 1で示した集光型太陽光発電ユニットの長尺状フレームに適用した通気孔の 実施例を示す平面図である。  FIG. 1 is an exploded perspective view showing the main part of the concentrating solar power generation unit according to Embodiment 1 of the present invention in an exploded manner. FIG. 2 is an explanatory diagram for conceptually explaining the improvement of air permeability in the tracking state in which the concentrating solar power generation unit shown in FIG. 1 is operated as a vertical type. FIG. 3 is a plan view showing an embodiment of a vent hole applied to the long frame of the concentrating solar power generation unit shown in FIG.
[0041] 本実施の形態に係る集光型太陽光発電ユニット 40は、集光型太陽光発電ユニット 40の天面を保護する透光性保護板 41、集光型太陽光発電ユニット 40の基本構造 体となる長尺状フレーム 44、複数の太陽電池 10を実装する太陽電池実装板 47を備 える。透光性保護板 41の裏面（長尺状フレーム 44側）には、太陽光を集光する集光 レンズ 42が例えば接合により設けてある。 [0041] The concentrating solar power generation unit 40 according to the present embodiment is a concentrating solar power generation unit. 40 translucent protection plate 41 that protects the top surface, long frame 44 that is the basic structure of the concentrating solar power generation unit 40, and solar cell mounting plate 47 that mounts multiple solar cells 10 . On the back surface of the translucent protective plate 41 (on the long frame 44 side), a condensing lens 42 that condenses sunlight is provided, for example, by bonding.
[0042] 透光性保護板 41および太陽電池実装板 47は、耐熱性、熱膨張性、生産性、信頼 性、保守管理性などを考慮して例えばそれぞれ 3個に分割された状態で長尺状フレ ーム 44に対応して配置してある。透光性保護板 41および太陽電池実装板 47は、耐 熱性を向上して高精度の集光を可能とするために相互に対応させて配置してある。 つまり、透光性保護板 41で構成されるレンズ群単位領域 103、太陽電池実装板 47 で構成される実装単位領域 101は、相互に対応して配置される。 [0042] The translucent protective plate 41 and the solar cell mounting plate 47 are long in a state of being divided into, for example, three pieces in consideration of heat resistance, thermal expansion, productivity, reliability, maintenance and management, etc. It is arranged corresponding to the shaped frame 44 . The translucent protective plate 41 and the solar cell mounting plate 47 are arranged to correspond to each other in order to improve heat resistance and enable high-precision light collection. That is, the lens group unit region 103 constituted by the translucent protective plate 41 and the mounting unit region 101 constituted by the solar cell mounting plate 47 are arranged corresponding to each other.
[0043] 長尺状フレーム 44は、側部 441および底部 444で構成される U字型としてある。長 尺状フレーム 44の天面（側部 441の頂面）の縁取り 442は、透光性保護板 41を固定 、保持する構成としてある。つまり、透光性保護板 41は、側部 441の頂面（縁取り 44 2)に固定される。  [0043] The long frame 44 has a U-shape including a side portion 441 and a bottom portion 444. An edge 442 of the top surface of the long frame 44 (the top surface of the side portion 441) is configured to fix and hold the translucent protective plate 41. That is, the translucent protective plate 41 is fixed to the top surface (the edge 442) of the side portion 441.
[0044] 側部 441は、集光レンズ 42の焦点距離に太陽電池 10を対応させる高さに調整して ある。つまり、集光レンズ 42は、縁取り 442に対応して配置してある。また、底部 444 は、対向する一対の側部 441を保持し、太陽電池 10を実装した太陽電池実装板 47 を裏面（長尺状フレーム 44の反対側）に装着する構成としてある。  The side portion 441 is adjusted to a height that allows the solar cell 10 to correspond to the focal length of the condenser lens 42. That is, the condensing lens 42 is arranged corresponding to the edge 442. The bottom portion 444 is configured to hold a pair of opposing side portions 441 and attach the solar cell mounting plate 47 on which the solar cell 10 is mounted to the back surface (opposite the long frame 44).
[0045] 透光性保護板 41は、透光性、強度、耐環境性などを考慮して例えばガラスで構成 してあり、周囲環境からの風雨の影響を排除することが可能としてある。なお、ガラス の代わりにアクリル樹脂、ポリカーボネートなどとすることも可能である。  The translucent protective plate 41 is made of, for example, glass in consideration of translucency, strength, environmental resistance, and the like, and can eliminate the influence of wind and rain from the surrounding environment. It is also possible to use acrylic resin or polycarbonate instead of glass.
[0046] 集光レンズ 42は、太陽電池 10に対応させて透光性保護板 41に列状に複数配置さ れ、長尺状のレンズ群単位領域 103に対応させてレンズアレイ（例えば 2 X 5の 10個 )を構成している。集光レンズ 42は、適宜の接着剤で透光性保護板 41に接着してあ る。集光レンズ 42は、加工性、透光性などを考慮して例えばアクリル樹脂で形成して ある。なお、アクリル樹脂の代わりにポリカーボネート、ガラスなどとすることも可能であ  A plurality of condensing lenses 42 are arranged in a row on the translucent protective plate 41 corresponding to the solar cell 10, and a lens array (for example, 2 × X) corresponding to the long lens group unit region 103. 10 of 5). The condenser lens 42 is bonded to the translucent protective plate 41 with an appropriate adhesive. The condensing lens 42 is made of, for example, an acrylic resin in consideration of processability and translucency. Polycarbonate, glass, etc. can be used instead of acrylic resin.
[0047] 長尺状フレーム 44は、鉄板、鋼板などの金属板を例えばロールフォーミング加工す ることにより、側部 441および底部 444を含めて全体を一体として形成してある。また 、底部 444には、集光レンズ 42により集光された太陽光を太陽電池 10に照射するた めの太陽光照射穴（不図示）が形成してある。長尺状フレーム 44は、鉄板、鋼板など の金属板で構成することにより、機械的強度および耐候性を確保することが可能とな [0047] The long frame 44 is formed by, for example, roll forming a metal plate such as an iron plate or a steel plate. Thus, the whole including the side portion 441 and the bottom portion 444 is integrally formed. Further, a sunlight irradiation hole (not shown) for irradiating the solar cell 10 with sunlight condensed by the condenser lens 42 is formed in the bottom portion 444. The long frame 44 can be made of a metal plate such as an iron plate or steel plate to ensure mechanical strength and weather resistance.
[0048] 太陽電池実装板 47は、透光性保護板 41に対応させて長尺状としてあり、長さ方向 へ太陽電池 10を列状に複数実装され、長尺状の実装単位領域 101に対応させて太 陽電池アレイ (例えば 2 X 5の 10個）を構成している。太陽電池実装板 47は、軽量化 および放熱性を考慮して例えばアルミニウム板で構成してある。なお、太陽電池 10 ( 太陽電池素子 11 )は、集光レンズ 42に対応して構成される集光単位領域 102毎に 集光単位領域 102の中心 (集光された太陽光の焦点位置:太陽光照射穴）に対応さ せて配置してある。 [0048] The solar cell mounting plate 47 has a long shape corresponding to the translucent protection plate 41, and a plurality of solar cells 10 are mounted in a row in the length direction, and the long mounting unit region 101 has The solar cell array (for example, 2 x 5 10 pieces) is configured correspondingly. The solar cell mounting plate 47 is made of, for example, an aluminum plate in consideration of weight reduction and heat dissipation. Note that the solar cell 10 (solar cell element 11) has a center of the condensing unit region 102 for each condensing unit region 102 corresponding to the condensing lens 42 (the focal position of the collected sunlight: It is arranged corresponding to the light irradiation hole).
[0049] なお、太陽電池 10は、放熱性および絶縁性を確保するレシーバ基板 20に太陽電 池素子 11を載置して構成してある。また、太陽電池実装板 47の周辺には、底部 444 に装着するための適宜の縁取り 471が形成してある。  Note that the solar cell 10 is configured by placing the solar cell element 11 on a receiver substrate 20 that ensures heat dissipation and insulation. Further, an appropriate border 471 for mounting on the bottom portion 444 is formed around the solar cell mounting plate 47.
[0050] 長尺状フレーム 44の長手方向終端を適宜の板部材で覆うことにより端面部 445が 形成される。端面部 445は、長尺状フレーム 44 (U字型形状）の強度を向上させ、ま た、長尺状フレーム 44の内部を外部から遮蔽することにより太陽電池 10を保護して 集光型太陽光発電ユニット 40の信頼性を向上させる。  [0050] The end face portion 445 is formed by covering the longitudinal end of the long frame 44 with an appropriate plate member. The end face portion 445 improves the strength of the long frame 44 (U-shaped shape), and also protects the solar cell 10 by shielding the inside of the long frame 44 from the outside, thereby concentrating solar cells. Improve the reliability of the photovoltaic unit 40.
[0051] 長尺状フレーム 44は、長手方向の端部に通気孔 446を備える。長手方向の端部に 設けることにより、長尺状フレーム 44内部に気流を発生させて、放熱性（つまり耐熱 性）を向上できる。なお、通気孔 446は、底部 444に設けることが好ましいが、側部 44 1、端面部 445に適宜設けることも可能である。  [0051] The elongated frame 44 is provided with a vent 446 at an end in the longitudinal direction. By providing it at the end in the longitudinal direction, an air flow can be generated inside the long frame 44 to improve heat dissipation (that is, heat resistance). Note that the vent hole 446 is preferably provided in the bottom portion 444, but may be appropriately provided in the side portion 441 and the end surface portion 445.
[0052] 通気孔 446を底部 444に設けることにより、通気孔 446は集光型太陽光発電ュニッ ト 40の底部に位置することとなり、外部からの風雨、砂塵などの浸入を確実に防止す ることが可能となることから、耐候性 (耐雨性、耐湿性、耐塵性など）が良ぐ信頼性の 高レ、集光型太陽光発電ユニット 40とすることができる。  [0052] By providing the vent hole 446 in the bottom part 444, the vent hole 446 is positioned at the bottom part of the concentrating solar power generation unit 40 and reliably prevents the entry of wind and rain, dust, etc. from the outside. Therefore, it is possible to obtain a highly reliable, concentrating solar power generation unit 40 with good weather resistance (rain resistance, moisture resistance, dust resistance, etc.).
[0053] 長尺状フレーム 44は、側部 441および底部 444に対して垂直に配置された仕切り 板 451を備えることが好ましい。仕切り板 451は、側部 441に対して溶接、リベットな どにより容易に接合することができる。仕切り板 451により、長尺状フレーム 44の短手 方向での断面形状を正確に画定することが可能となり、長尺状フレーム 44の強度、 集光レンズ 42の集光精度を向上させて、発電効率、信頼性を向上させることが可能 となる。 [0053] The elongated frame 44 is a partition arranged perpendicular to the side portion 441 and the bottom portion 444. A plate 451 is preferably provided. The partition plate 451 can be easily joined to the side portion 441 by welding, rivets or the like. The partition plate 451 makes it possible to accurately define the cross-sectional shape of the long frame 44 in the short direction, improving the strength of the long frame 44 and the light collection accuracy of the condensing lens 42 to generate power. Efficiency and reliability can be improved.
[0054] なお、仕切り板 451は、実装単位領域 101およびレンズ群単位領域 103に対応さ せた位置に配置することにより、透光性保護板 41および太陽電池実装板 47と長尺 状フレーム 44との位置精度および結合強度を向上させて高精度の集光を行なうこと が可能となる。  [0054] The partition plate 451 is disposed at a position corresponding to the mounting unit region 101 and the lens group unit region 103, so that the translucent protective plate 41, the solar cell mounting plate 47, and the long frame 44 are disposed. Thus, it is possible to improve the position accuracy and the coupling strength with high-precision light collection.
[0055] 仕切り板 451は、通気用切り欠き 452を有することが好ましい。通気用切り欠き 452 を有することにより、仕切り板 451を設けた場合でも、流路 201 (図 2)での気流の発 生を妨げることが無ぐ通気性 (放熱性）を確実に維持することが可能となる。  The partition plate 451 preferably has a ventilation notch 452. By having the notch 452 for ventilation, even when the partition plate 451 is provided, the air permeability (heat dissipation) can be reliably maintained without hindering the generation of airflow in the channel 201 (Fig. 2). Is possible.
[0056] 縦型として配置された集光型太陽光発電ユニット 40は、支柱 81に支持され、稼動 状態では追尾状態とされ、追尾機構 82により太陽光 202に対向することから、傾斜さ れた状態となる（図 2)。つまり、縦型として配置された集光型太陽光発電ユニット 40 は、長尺状フレーム 44の長手方向が縦方向（垂直方向）となることから、確実に気流 (流路 201)を発生させる。  [0056] The concentrating photovoltaic power generation unit 40 arranged as a vertical type is supported by the support column 81, is in a tracking state in the operating state, and is inclined because it faces the sunlight 202 by the tracking mechanism 82. State (Figure 2). That is, the concentrating solar power generation unit 40 arranged as a vertical type reliably generates an air flow (flow path 201) because the longitudinal direction of the long frame 44 is the vertical direction (vertical direction).
[0057] 通気孔 446により長尺状フレーム 44の内部に気流（流路 201)を発生させることか ら、通気性を確実に向上させることが可能となる。したがって、底部 444に対応して配 置された太陽電池 10の温度上昇を均一に効果的に防止することができ、集光された 太陽光 202による太陽電池 10の温度上昇を防止して、発電効率および信頼性を向 上させること力 Sでさる。  [0057] Since the air flow (flow path 201) is generated inside the elongated frame 44 by the vent hole 446, the air permeability can be reliably improved. Therefore, the temperature rise of the solar cell 10 arranged corresponding to the bottom portion 444 can be prevented uniformly and effectively, and the temperature rise of the solar cell 10 due to the concentrated sunlight 202 can be prevented to generate power. Improve efficiency and reliability with power S.
[0058] 通気孔 446は、流路 201で示す気流を発生させるために、長尺状フレーム 44の長 手方向で対応する両方の端部（両端部）に形成してあることが好ましい。つまり、通気 孔 446相互間で長尺状フレーム 44の全長にわたって太陽電池 10の温度上昇を均 一に効果的に防止することができ、太陽電池 10の温度上昇をさらに防止して、発電 効率および信頼性を向上させることができる。なお、集光型太陽光発電ユニット 40は 、縦型として配置することが好ましいが、横型として配置することも可能である。 [0059] 通気孔 446は、底部 444の両端部に形成された多数の貫通孔により構成してある（ 図 3)。貫通孔の大きさ、密度、個数などは、長尺状フレーム 44の強度、太陽電池実 装板 47に実装された太陽電池 10の定格などを考慮して、流路 201を効果的に発生 する通気孔 446となるように適宜設定することが可能である。 The air holes 446 are preferably formed at both ends (both ends) corresponding to the longitudinal direction of the long frame 44 in order to generate the air flow indicated by the flow path 201. In other words, the temperature rise of the solar cell 10 can be effectively and uniformly prevented over the entire length of the elongated frame 44 between the air holes 446, and further the temperature rise of the solar cell 10 can be further prevented, and the power generation efficiency and Reliability can be improved. The concentrating solar power generation unit 40 is preferably arranged as a vertical type, but can also be arranged as a horizontal type. [0059] The vent hole 446 is configured by a large number of through holes formed at both end portions of the bottom portion 444 (FIG. 3). The size, density, number, etc. of the through-holes effectively generate the flow path 201 in consideration of the strength of the long frame 44 and the rating of the solar cell 10 mounted on the solar cell mounting plate 47. It is possible to appropriately set the air hole 446.
[0060] 図 4は、図 3で示した通気孔に対応させて通気孔被覆部を設けた状態を概念的に 説明する斜視図である。図 5は、図 4で示した通気孔被覆部がフィルタを備えた状態 を示す断面図である。  FIG. 4 is a perspective view conceptually illustrating a state in which a vent hole covering portion is provided corresponding to the vent hole shown in FIG. FIG. 5 is a cross-sectional view showing a state in which the vent hole covering portion shown in FIG. 4 includes a filter.
[0061] 通気孔 446は、多数の貫通孔で形成されることから、外部から風雨、砂塵などが侵 入する恐れがある。この対策として、長尺状フレーム 44は、通気孔 446を被覆する通 気孔被覆部 447を備える構成とすることが好ましい。  [0061] Since the air holes 446 are formed of a large number of through holes, there is a risk that wind and rain, dust, etc. may invade from the outside. As a countermeasure, it is preferable that the long frame 44 includes a vent hole covering portion 447 that covers the vent hole 446.
[0062] 通気孔被覆部 447は、例えば、 U字型に折り曲げられた板材で構成することが可能 である。 U字型に折り曲げられた板材（通気孔被覆部 447)力 S、通気孔 446を被覆す るように底部 444の裏面に例えばネジ止め、溶接などにより結合される。  [0062] The vent hole covering portion 447 can be formed of, for example, a plate material bent into a U shape. It is joined to the back surface of the bottom portion 444 by, for example, screwing or welding so as to cover the plate material (vent hole covering portion 447) force S folded into a U-shape and the vent hole 446.
[0063] この構成とすることにより、風雨、砂塵などが長尺状フレーム 44の内部へ通気孔 44 6から浸入することを防止できることから、さらに耐候性を向上させて、信頼性を向上 させること力 Sでさる。  [0063] With this configuration, it is possible to prevent wind and rain, dust, and the like from entering the inside of the long frame 44 from the vent hole 446, thereby further improving the weather resistance and improving the reliability. Touch with force S.
[0064] 通気孔被覆部 447は、外部からの風雨、砂塵などをある程度防止することが可能で ある力 S、強い風雨、微粒状態の砂塵などに対しては効果が低下する恐れがある。この 対策として、通気孔被覆部 447は、フィルタ 448を備えることが好ましい。  [0064] The vent hole covering portion 447 may be less effective against a force S that can prevent external wind and rain, dust and the like to some extent, strong wind and rain, and fine dust particles. As a countermeasure against this, the vent hole covering portion 447 preferably includes a filter 448.
[0065] フィノレタ 448は、例えば、底部 444 (通気孔 446)と通気孔被覆部 447との間の空間 に適宜耐候性の強レ、素材 (例えば耐食性金属）のフィルタを配置して構成することが 可能である。この構成により、流路 201での気流を妨げることなぐ強い風雨、微粒状 態の砂塵などに対しても、長尺状フレーム 44の内部への侵入を確実に防止でき、集 光型太陽光発電ユニット 40の信頼性をさらに向上させることが可能となる。  [0065] The finoleta 448 is configured by, for example, appropriately arranging a strong weather-resistant material (for example, a corrosion-resistant metal) in a space between the bottom portion 444 (the vent hole 446) and the vent hole covering portion 447. Is possible. With this configuration, it is possible to reliably prevent the inside of the long frame 44 from entering the interior of the long frame 44 even against strong wind and rain that does not obstruct the airflow in the flow path 201, fine dust particles, etc. The reliability of the unit 40 can be further improved.
[0066] 図 6 (A)および図 6 (B)では、図 4で示した通気孔被覆部の変形例を説明しており、 図 6 (A)が図 2と同様に集光型太陽光発電ユニットを縦型として稼動させた追尾状態 での通気孔被覆部の作用を示す通気孔被覆部の断面図、図 6 (B)が図 6 (A)の追 尾を停止した休止状態での通気孔被覆部の作用を示す通気孔被覆部の断面図で ある。 [0066] FIGS. 6 (A) and 6 (B) illustrate a modification of the vent hole covering portion shown in FIG. 4. FIG. 6 (A) is similar to FIG. Sectional view of the vent hole covering part showing the action of the vent hole covering part in the tracking state when the power generation unit is operated as a vertical type, FIG. 6 (B) is in the dormant state where the tracking of FIG. 6 (A) is stopped. It is sectional drawing of the vent hole covering part which shows the effect | action of the vent hole covering part. is there.
[0067] 本変形例に係る通気孔被覆部 447は、相互に対向する羽根板 450を交互に配置 して構成した通気路 449を備える。相互に対向する羽根板 450を交互に配置するこ とから、通気路 449をジグザグ状とすることができる。通気路 449をジグザグ状とする こと力 、外部から通気孔 446に向かって侵入する風 602が運ぶ砂塵 601の侵入を 、羽根板 450で排除することが可能となる。  [0067] The vent hole covering portion 447 according to the present modification includes a vent path 449 configured by alternately arranging blade plates 450 facing each other. Since the blade plates 450 facing each other are alternately arranged, the air passage 449 can be formed in a zigzag shape. The force of forming the air passage 449 in a zigzag shape and the intrusion of the dust 601 carried by the wind 602 entering from the outside toward the air vent 446 can be eliminated by the blades 450.
[0068] つまり、図 6 (A)の追尾状態であっても、また、図 6 (B)の休止状態であっても、羽根 板 450が砂塵 601に対して防塵壁として作用し、通気路 449の入り口で砂塵 601を 排除することから、砂塵 601が通気孔 446から長尺状フレーム 44の内部へ侵入する ことを防止することが可能となり、集光型太陽光発電ユニット 40の信頼性を向上させ ること力 Sでさる。  That is, even in the tracking state of FIG. 6 (A) and in the resting state of FIG. 6 (B), the blade plate 450 acts as a dust-proof wall against the sand dust 601 and the ventilation path. Since the dust 601 is eliminated at the entrance of the 449, it is possible to prevent the dust 601 from entering the inside of the elongated frame 44 through the vent hole 446, and the reliability of the concentrating photovoltaic power generation unit 40 is improved. Improve with S.
[0069] なお、羽根板 450は、根元力、ら先端にかけて、通気孔 446から通気路 449の入り口  [0069] It should be noted that the vane plate 450 extends from the vent hole 446 to the entrance of the vent passage 449 from the root force to the tip.
(外側）へ向力、う方向に傾斜させてあることが好ましい。この構成により、砂塵 601の 侵入をより確実に防止することができ、また、羽根板 450に衝突した砂塵 601を外部 へ落下させて砂塵 601が羽根板 450に付着して通気路 449に滞留することを防止す ること力 Sできる。つまり、羽根板 450に上述した傾斜を持たせることにより、砂塵 601の 侵入を通気路 449の入り口で確実に防止することが可能となり、砂塵防止効果の高 V、防塵壁（通気路 449)として作用させること力 Sできる。  It is preferable to incline in the direction toward the outside (outward). With this configuration, the dust 601 can be more reliably prevented from entering, and the dust 601 that has collided with the blades 450 is dropped to the outside, and the dust 601 adheres to the blades 450 and stays in the air passage 449. The ability to prevent this is possible. In other words, by providing the blade plate 450 with the above-described inclination, it is possible to surely prevent the intrusion of dust 601 at the entrance of the air passage 449. Force to act S
[0070] <実施の形態 2〉  <Embodiment 2>
図 7 (A)および図 7 (B)を参照しつつ、本発明の実施の形態 2に係る集光型太陽光 発電装置を説明する。  A concentrating solar power generation device according to Embodiment 2 of the present invention will be described with reference to FIGS. 7 (A) and 7 (B).
[0071] 図 7 (A)および図 7 (B)では、本発明の実施の形態 2に係る集光型太陽光発電装 置の主要部を説明しており、図 7 (A)が集光型太陽光発電ユニットの天面側を示す 正面図、図 7 (B)が側面図である。  [0071] FIGS. 7A and 7B illustrate a main part of the concentrating solar power generation device according to Embodiment 2 of the present invention, and FIG. 7B is a front view showing the top side of the solar photovoltaic power generation unit, and FIG. 7B is a side view.
[0072] 本実施の形態に係る集光型太陽光発電装置 1は、実施の形態 1に係る集光型太陽 光発電ユニット 40を長尺状フレーム 44の短手方向に複数 (例えば、 9個）並置して構 成してある。長尺状フレーム 44の短手方向は、図 7 (A)に示すように水平方向とする ことが好ましい。この構成により、集光型太陽光発電ユニット 40を縦型に配置して稼 動させることができることから、図 2で示したとおり通気性に優れ、放熱性が高く信頼 性を向上させた集光型太陽光発電装置 1とすることができる。つまり、垂直方向での 流路 201を構成して通気性、耐熱性を大きくすることが可能となり、さらに高い信頼性 を得ること力 Sでさる。 [0072] The concentrating solar power generation device 1 according to the present embodiment includes a plurality of concentrating solar power generation units 40 according to the first embodiment in the short direction of the long frame 44 (for example, nine ) They are arranged side by side. The short direction of the long frame 44 is preferably the horizontal direction as shown in FIG. With this configuration, the concentrating solar power generation unit 40 is arranged in a vertical shape for profit. As shown in FIG. 2, the concentrating solar power generation device 1 having excellent air permeability, high heat dissipation and improved reliability can be obtained. That is, the flow path 201 in the vertical direction can be configured to increase the air permeability and heat resistance, and the force S can be obtained to obtain higher reliability.
[0073] なお、本実施の形態では、短手方向を水平方向としてある力 短手方向を垂直方 向とすることも可能である。この場合でも、通気孔 446を有することから、一定の通気 性を確保することが可能となる。  [0073] In the present embodiment, the horizontal direction is the short direction, and the short direction can be the vertical direction. Even in this case, since the air holes 446 are provided, it is possible to ensure a certain air permeability.
[0074] <実施の形態 3〉  <Embodiment 3>
図 8、図 9 (A)〜図 9 (C)に基づいて、本発明の実施の形態 3に係る集光型太陽光 発電ユニットを説明する。  A concentrating solar power generation unit according to Embodiment 3 of the present invention will be described based on FIG. 8 and FIG. 9 (A) to FIG. 9 (C).
[0075] 図 8は、本発明の実施の形態 3に係る集光型太陽光発電ユニットの透光性保護板 と側部との位置決めに適用する位置決めピンの嵌合形態を説明する分解斜視図で ある。図 9 (A)〜図 9 (C)では、図 8で示した位置決めピンの中心を通る面での断面 を示しており、図 9 (A)は長尺状フレームの短手方向での断面図、図 9 (B)は長尺状 フレームの長手方向での断面図で長尺状フレームの内側から側部を見た状態を示し 、図 9 (C)は位置決めピンの拡大断面図である。  FIG. 8 is an exploded perspective view for explaining a fitting form of a positioning pin applied to positioning of the translucent protective plate and the side part of the concentrating solar power generation unit according to Embodiment 3 of the present invention. It is. 9 (A) to 9 (C) show a cross section in a plane passing through the center of the positioning pin shown in FIG. 8, and FIG. 9 (A) shows a cross section in the short direction of the long frame. Fig. 9 (B) is a cross-sectional view of the long frame in the longitudinal direction, showing the side viewed from the inside of the long frame, and Fig. 9 (C) is an enlarged cross-sectional view of the positioning pin .
[0076] 本実施の形態では、実施の形態 1で説明したとおり、集光型太陽光発電ユニット 40 の透光性保護板 41は、長尺状フレーム 44の天面（側部 441の頂面、つまり縁取り 44 2)に固定され、保持される。透光性保護板 41には、太陽電池 10の配置に位置合わ せされた集光レンズ 42が予め設けてあり、底部 444に対応して配置された太陽電池 10に対して透光性保護板 41 (集光レンズ 42)を正確に位置合わせした状態で縁取 り 442に固定する必要がある。  In the present embodiment, as described in the first embodiment, the translucent protective plate 41 of the concentrating solar power generation unit 40 is the top surface of the elongated frame 44 (the top surface of the side portion 441). That is, it is fixed to the edge 44 2) and held. The translucent protective plate 41 is provided in advance with a condensing lens 42 that is aligned with the arrangement of the solar cell 10, and the translucent protective plate is provided for the solar cell 10 that is arranged corresponding to the bottom 444. 41 (Condenser lens 42) needs to be fixed to the rim 442 with the correct alignment.
[0077] 透光性保護板 41の周囲（外周部）には、縁取り 442に対応させて縁取り 411が形 成してあり、縁取り 411と縁取り 442とを当接させることにより、透光性保護板 41を縁 取り 442 (側部 441、長尺状フレーム 44)に固定して保持する構成としてある。  [0077] A rim 411 is formed around the translucent protective plate 41 corresponding to the rim 442 around the outer periphery (peripheral portion). By bringing the rim 411 and the rim 442 into contact with each other, the translucent protection is provided. The plate 41 is fixed and held on an edge 442 (side portion 441, long frame 44).
[0078] 1枚の透光性保護板 41と集光レンズ 42 (例えば 10個）との間での位置合わせは、 1 0個の集光レンズ 42を対応する太陽電池 10の配置に整合させた状態で集光レンズ 42と透光性保護板 41とを接着することにより行なうことが可能である。 [0079] し力、し、透光性保護板 41の縁取り 411と縁取り 442との位置合わせは、次の理由な どから容易ではない。つまり、集光レンズ 42を多数保持することから外形が大きくなる 透光性保護板 41の外形端部を基準とすることは精度上の問題がある。また、底部 44 4に対応する太陽電池 10 (太陽光照射穴：不図示）を基準として透光性保護板 41の 位置合わせをすることは側部 441が間に存在して太陽電池 10との距離が離れている ことから困難である。 [0078] The alignment between one translucent protective plate 41 and the condensing lenses 42 (for example, ten) is made by aligning the ten condensing lenses 42 with the arrangement of the corresponding solar cells 10. This can be done by adhering the condensing lens 42 and the translucent protective plate 41 in a state of being covered. [0079] The alignment of the rim 411 and the rim 442 of the translucent protective plate 41 is not easy for the following reasons. That is, since the outer shape becomes large because a large number of the condensing lenses 42 are held, using the outer edge of the translucent protective plate 41 as a reference has a problem in accuracy. In addition, the alignment of the translucent protective plate 41 with respect to the solar cell 10 (sunlight irradiation hole: not shown) corresponding to the bottom portion 44 4 is based on the fact that the side portion 441 exists between the solar cell 10 It is difficult because of the distance.
[0080] したがって、本実施の形態では、透光性保護板 41の位置決め構造として、縁取り 4 11の縁取り 442 (側部 441の頂面）に対向する面 (集光レンズ載置面）に集光レンズ 421の中心に対応させて位置決めされた位置決めピン 412を接着して設けてある。  Therefore, in the present embodiment, as the positioning structure of the translucent protective plate 41, the light is collected on the surface (condenser lens mounting surface) facing the edge 442 (the top surface of the side portion 441) of the edge 411. A positioning pin 412 positioned corresponding to the center of the optical lens 421 is provided by bonding.
[0081] つまり、位置決めピン 412は、 2列の中央にある 2個の集光レンズ 421の中心を通る 中心線を縁取り 411まで延長した延長線上で光学的に高精度で求めた位置に接着 してある。なお、集光レンズ 421は、透光性保護板 41に配置された複数の集光レン ズ 42 (レンズ群単位領域 103)の中央に位置する集光レンズである。透光性保護板 4 1の短手方向で 2列に配置された集光レンズ 421の中心を基準とすることから、透光 性保護板 41の長手方向に配置された 2つの位置決めピン 412の位置決めをさらに 高精度行なうことが可能となる。  That is, the positioning pin 412 is bonded to the position obtained optically with high accuracy on the extended line extending from the center line passing through the centers of the two condenser lenses 421 at the center of the two rows to the rim 411. It is. The condensing lens 421 is a condensing lens positioned at the center of the plurality of condensing lenses 42 (lens group unit regions 103) disposed on the translucent protective plate 41. Since the center of the condensing lens 421 arranged in two rows in the short direction of the translucent protective plate 4 1 is used as a reference, the two positioning pins 412 arranged in the longitudinal direction of the translucent protective plate 41 Positioning can be performed with higher accuracy.
[0082] また、縁取り 442には、位置決めピン 412に対応させてピン嵌合部 443が形成して ある。ピン嵌合部 443は、長尺状フレーム 44を構成するときに、太陽電池 10 (太陽光 照射穴）の位置と整合させて高精度に配置、形成することが可能である。  Further, a pin fitting portion 443 is formed on the edge 442 so as to correspond to the positioning pin 412. The pin fitting portion 443 can be arranged and formed with high accuracy in alignment with the position of the solar cell 10 (sunlight irradiation hole) when the elongated frame 44 is formed.
[0083] したがって、位置決めピン 412を対向するピン嵌合部 443に位置決めして嵌合する ことにより、透光性保護板 41 (集光レンズ 42)を縁取り 442 (側部 441、長尺状フレー ム 44)に高精度に位置合わせすることが可能となり、結果として透光性保護板 41 (集 光レンズ 42)を太陽電池 10に高精度に位置合わせすることができる。  Therefore, by positioning and fitting the positioning pin 412 to the opposing pin fitting portion 443, the translucent protective plate 41 (condensing lens 42) is trimmed 442 (side portion 441, elongated frame). Therefore, the translucent protective plate 41 (collecting lens 42) can be aligned with the solar cell 10 with high accuracy.
[0084] 太陽電池 10に対応させて透光性保護板 41に予め接合された集光レンズ 421の中 心を基準に位置決めピン 412の位置決めをすることから、太陽電池 10 (長尺状フレ ーム 44)に対する透光性保護板 41 (集光レンズ 42)の位置合わせ精度を確実に向 上させることが可能となる。 [0084] Since the positioning pin 412 is positioned with reference to the center of the condensing lens 421 previously bonded to the translucent protective plate 41 so as to correspond to the solar cell 10, the solar cell 10 (long frame It is possible to reliably improve the alignment accuracy of the translucent protective plate 41 (condensing lens 42) with respect to the lens 44 ).
[0085] 複数（例えば 10個）の集光レンズ 42の中で長手方向の中央に位置する集光レンズ 421の中心を基準点とすることから、透光性保護板 41の長手方向の両端位置での 透光性保護板 41、長尺状フレーム 44、太陽電池実装板 47の熱膨張による伸びの 影響 (位置ずれ)を最小限とすることが可能となり、耐熱性、発電効率を向上させるこ とが可能となる。 [0085] Among the plural (for example, ten) condensing lenses 42, the condensing lens positioned at the center in the longitudinal direction Since the center of 421 is used as the reference point, the effect of elongation due to thermal expansion of the translucent protective plate 41, the long frame 44, and the solar cell mounting plate 47 at both longitudinal end positions of the translucent protective plate 41 (Position deviation) can be minimized, and heat resistance and power generation efficiency can be improved.
[0086] なお、位置決めピン 412は、例えば両面テープ 413で縁取り 411 (透光性保護板 4 1)に接着して仮止めした後、接着剤 414で強固に接着され（図 9 (C) )、ピン嵌合部 4 43への嵌合を確実に行なえる構成としてある。  Note that the positioning pins 412 are bonded firmly to the edge 411 (translucent protective plate 41) with a double-sided tape 413, for example, and then firmly bonded with an adhesive 414 (FIG. 9 (C)). Thus, the pin fitting portion 443 can be reliably fitted.
[0087] 上述したとおり、本実施の形態に係る集光型太陽光発電ユニット 40によれば、集光 レンズ 42を太陽電池 10に高精度で位置合わせできることから、集光レンズ 42により 集光された太陽光を高精度に太陽電池 10に照射することが可能となり、不要な温度 上昇を防止して耐熱性、発電効率を向上させることが可能となる。  [0087] As described above, according to the concentrating solar power generation unit 40 according to the present embodiment, the condensing lens 42 can be aligned with the solar cell 10 with high accuracy. Therefore, it is possible to irradiate the solar cell 10 with high accuracy, and it is possible to prevent unnecessary temperature rise and improve heat resistance and power generation efficiency.
[0088] 本発明は、その主旨または主要な特徴から逸脱することなぐ他のいろいろな形で 実施すること力 Sできる。そのため、上述の実施形態はあらゆる点で単なる例示にすぎ ず、限定的に解釈してはならない。本発明の範囲は特許請求の範囲によって示すも のであって、明細書本文にはなんら拘束されない。さらに、特許請求の範囲の均等 範囲に属する変形や変更は、全て本発明の範囲内のものである。  [0088] The present invention can be implemented in various other forms without departing from the spirit or main features thereof. Therefore, the above-described embodiment is merely an example in all respects and should not be interpreted in a limited manner. The scope of the present invention is indicated by the claims, and is not restricted by the text of the specification. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.
[0089] なお、この出願 (ま、 曰本で 2006年 9月 26曰 ίこ出願された特願 2006— 260929号 に基づく優先権を請求する。その内容はこれに言及することにより、本出願に組み込 まれるものである。また、本明細書に引用された文献は、これに言及することにより、 その全部が具体的に組み込まれるものである。  [0089] Note that this application (or Japanese Patent Application No. 2006-260929, filed September 26, 2006 in Japan, is claimed as a priority). In addition, all references cited in this specification are specifically incorporated by reference to this document.
産業上の利用可能性  Industrial applicability
[0090] 本発明は、集光レンズで集光して太陽エネルギーを電力に変換する集光型太陽光 発電ユニットおよび集光型太陽光発電装置に好適に利用することができる。  The present invention can be suitably used for a concentrating solar power generation unit and a concentrating solar power generation device that condenses light with a condensing lens and converts solar energy into electric power.

Claims

請求の範囲 The scope of the claims
[1] 側部および底部を有する長尺状フレームと、前記底部に対応して配置された太陽 電池と、前記側部の頂面に対応して配置され前記太陽電池に太陽光を集光して照 射する集光レンズとを備える集光型太陽光発電ユニットであって、  [1] A long frame having a side portion and a bottom portion; a solar cell disposed corresponding to the bottom portion; and a solar cell disposed corresponding to the top surface of the side portion to collect sunlight. A concentrating solar power generation unit comprising a condensing lens for illuminating
前記長尺状フレームの長手方向の端部に通気孔を備えることを特徴とする集光型 太陽光発電ユニット。  A concentrating solar power generation unit comprising a vent hole at an end portion in a longitudinal direction of the long frame.
[2] 前記通気孔は、前記底部に形成してあることを特徴とする請求項 1に記載の集光型 太陽光発電ユニット。  [2] The concentrating solar power generation unit according to [1], wherein the vent hole is formed in the bottom portion.
[3] 前記通気孔は、前記長手方向で対応する両方の前記端部に形成してあることを特 徴とする請求項 1に記載の集光型太陽光発電ユニット。  [3] The concentrating solar power generation unit according to [1], wherein the air holes are formed in both of the end portions corresponding in the longitudinal direction.
[4] 前記通気孔を被覆する通気孔被覆部を備えることを特徴とする請求項 1に記載の 集光型太陽光発電ユニット。 [4] The concentrating solar power generation unit according to [1], further comprising a vent hole covering portion that covers the vent hole.
[5] 前記通気孔被覆部は、フィルタを備えることを特徴とする請求項 4に記載の集光型 太陽光発電ユニット。 5. The concentrating solar power generation unit according to claim 4, wherein the vent hole covering portion includes a filter.
[6] 前記通気孔被覆部は、相互に対向する羽根板を交互に配置した通気路を備えるこ とを特徴とする請求項 4に記載の集光型太陽光発電ユニット。  6. The concentrating solar power generation unit according to claim 4, wherein the vent hole covering portion includes a vent path in which blades facing each other are alternately arranged.
[7] 前記長尺状フレームは、前記側部および前記底部に対して垂直に配置された仕切 り板を備えることを特徴とする請求項 1に記載の集光型太陽光発電ユニット。 7. The concentrating solar power generation unit according to claim 1, wherein the elongated frame includes a partition plate arranged perpendicular to the side portion and the bottom portion.
[8] 前記仕切り板は、通気用切り欠きを有することを特徴とする請求項 7に記載の集光 型太陽光発電ユニット。 8. The concentrating solar power generation unit according to claim 7, wherein the partition plate has a ventilation notch.
[9] 側部および底部を有する長尺状フレームと、前記底部に対応して配置された太陽 電池と、該太陽電池に太陽光を集光して照射する集光レンズが設けられ前記側部の 頂面に固定された透光性保護板とを備える集光型太陽光発電ユニットであって、 前記集光レンズの中心に対応して位置決めされ前記透光性保護板の縁取りに設 けられた位置決めピンが、前記頂面に形成されたピン嵌合部に嵌合してあることを特 徴とする集光型太陽光発電ユニット。 [9] An elongate frame having a side portion and a bottom portion, a solar cell disposed corresponding to the bottom portion, and a condensing lens for condensing and irradiating sunlight to the solar cell is provided. A concentrating solar power generation unit including a translucent protective plate fixed to the top surface of the concentrating solar power generation unit, positioned corresponding to the center of the condensing lens, and provided at an edge of the translucent protective plate. A concentrating solar power generation unit characterized in that the positioning pin is fitted into a pin fitting portion formed on the top surface.
[10] 長尺状フレームを備える集光型太陽光発電ユニットを前記長尺状フレームの短手 方向に複数並置して構成してある集光型太陽光発電装置であって、 前記集光型太陽光発電ユニットは、請求項 1ないし請求項 9のいずれか一つに記 載の集光型太陽光発電ユニットであることを特徴とする集光型太陽光発電装置。 前記短手方向は、水平方向であることを特徴とする請求項 10に記載の集光型太陽 光発電装置。 [10] A concentrating solar power generation apparatus configured by arranging a plurality of concentrating solar power generation units including a long frame in parallel in a short direction of the long frame, The concentrating solar power generation apparatus according to any one of claims 1 to 9, wherein the concentrating solar power generation unit is the concentrating solar power generation unit according to any one of claims 1 to 9. 11. The concentrating solar power generation device according to claim 10, wherein the short direction is a horizontal direction.
PCT/JP2007/067798 2006-09-26 2007-09-13 Solar energy collection type photovoltaic generation unit and solar energy collection type photovoltaic generation device WO2008038522A1 (en)

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