JP4953745B2 - Concentrating solar power generation unit and concentrating solar power generation device - Google Patents

Description

  The present invention relates to a concentrating solar power generation unit including a solar cell arranged corresponding to the bottom of a long frame, and a concentrating solar power generation configured by juxtaposing such a concentrating solar power generation unit. Relates to the 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, sunlight collected by a condenser lens is used. A concentrating solar power generation device (concentrating solar power generation unit) of a type that takes out electric power by irradiating a solar cell element smaller than the light receiving area of the condensing lens is being put into practical use.

  A concentrating solar power generation device condenses sunlight with a condensing lens and irradiates the solar cell element, so the solar cell element has a small light receiving area that can receive sunlight collected by the optical system Should be provided. That is, 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 usage amount of the solar cell element that is an expensive component in the solar power generation device The cost can be reduced. Due to such advantages, the concentrating solar power generation apparatus is being used for power supply in an area where power can be generated using a large area.

As a concentrating solar power generation device, a simple configuration in which a solar cell module is attached to a support plate is proposed, so that sufficient strength and rigidity can be obtained without increasing the weight, and heat dissipation can be obtained. (For example, refer to Patent Document 1).
JP-A-11-284217

  Energy due to light collection at the light receiving position is extremely large, and measures for preventing damage due to irradiation around the solar cell element are necessary as measures for heat dissipation. In addition, the concentrating solar power generation apparatus is often installed in a region such as a desert where the temperature change is severe, and it is necessary to take measures against thermal expansion against a temperature rise.

  However, the concentrating solar power generation device described in Patent Document 1 has problems in terms of mass productivity, installation workability, maintenance management, etc., because the heat dissipation structure is complicated and large, and the production process is complicated. . In addition, since air permeability to the solar cell module and the lens frame is not considered, the heat storage effect by the concentrated sunlight is large, the solar cell module becomes high temperature, and the photoelectric conversion efficiency is reduced. May cause problems with sex.

  That is, in order to ensure a highly reliable concentrating solar power generation device (concentrating solar power generation unit) that reliably extracts power from sunlight, the solar cell element is mounted and the solar cell element and the optical system It is extremely important to take appropriate measures against heat and light collection when adjusting the positional relationship between the two.

  The present invention has been made in view of such a situation, and has a simple structure to ensure high heat dissipation by providing a vent hole in the longitudinal end of a long frame on which a solar cell is mounted. An object of the present invention is to provide a concentrating solar power generation unit that improves heat resistance and realizes high reliability and power generation efficiency.

  The present invention has a simple structure by adopting a configuration in which a positioning pin provided on a translucent protective plate to which a condenser lens is joined is fitted to a pin fitting portion provided on a side of a long frame. To provide a concentrating solar power generation unit that aligns the condenser lens with the solar cell with high accuracy, prevents unnecessary temperature rise, improves heat resistance, and realizes high reliability and power generation efficiency The purpose.

  The present invention achieves high heat dissipation with a simple structure by arranging a plurality of concentrating solar power generation units each having a vent hole in the longitudinal direction end of the long frame in the short direction of the long frame. Another object of the present invention is to provide a concentrating solar power generation device that secures and improves heat resistance and realizes high reliability and power generation efficiency.

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 irradiated with sunlight through a sunlight irradiation hole formed in the bottom portion, and the sun A solar cell mounting plate on which a battery is mounted and mounted on the back surface of the bottom portion, and a light-transmitting protective plate fixed to the top surface of the side portion, and is a collector that collects and irradiates sunlight on the solar cell. It comprises an optical lens and an end face part covering the longitudinal end of the elongated frame, and has vent holes formed at both ends corresponding to the longitudinal direction of the bottom part.

With this structure, airflow is generated inside the long frame with a simple structure to improve air permeability and improve heat dissipation and heat resistance, thus preventing the temperature rise of solar cells due to the concentrated sunlight. Thus, power generation efficiency and reliability can be improved. In addition, since the vent is located at the bottom of the long frame, it reliably prevents the entry of wind, rain, and dust from the outside, and has good weather resistance (rain resistance, moisture resistance, dust resistance, etc.) and is reliable. It becomes a highly concentrating solar power generation unit. In addition, since airflow passing between the bottom and the condenser lens is generated between both ends of the bottom of the long frame, air permeability at the bottom of the long frame can be reliably improved. It becomes possible, and the temperature rise of a solar cell can be prevented uniformly over the full length of a long frame.

  In the concentrating solar power generation unit according to the present invention, a vent hole covering portion that covers the vent hole is provided.

  With this configuration, it is possible to prevent wind and rain, dust, and the like from entering the inside of the elongated frame from the vent hole, so that weather resistance can be further improved and reliability can be improved.

  In the concentrating photovoltaic power generation unit according to the present invention, the vent hole covering portion includes a filter.

  With this configuration, it is possible to reliably prevent the entry of wind and rain, dust, and the like from the vent hole, so that it is possible to further improve the weather resistance and improve the reliability.

Moreover, in the concentrating solar power generation unit according to the present invention, the vent hole covering portion includes a vent path in which blade plates facing each other are alternately arranged. Further, the blade is characterized in that it is inclined from the root to the tip in a direction toward the outside of the air passage.

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 hole from the outside, and the reliability can be improved. Furthermore, the additional configuration can more reliably prevent the intrusion of the sand dust Ds, and the sand dust colliding with the blades can be dropped to the outside and the dust can be prevented from adhering to the blades and staying in the air passage. can do.

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, and the partition plate includes the condensing lens. Is arranged at a partition position corresponding to a long lens group unit region formed by arranging a plurality of the long frames in the longitudinal direction of the long frame, and generates a gas flow in the longitudinal direction of the long frame. It is characterized by having a notch .

With this configuration , it is possible to improve the power generation efficiency and reliability by improving the strength of the long frame and the light collection accuracy of the condenser lens. In addition, since the partition plate is arranged at the partition position corresponding to the lens group unit area, the position accuracy and the coupling strength between the translucent protective plate and the solar cell mounting plate and the long frame are improved and high accuracy is achieved. Can be condensed. In addition, even when a partition plate is provided, it ensures air permeability in the flow path (flow path between the end portions) that extends over both of the air holes, and uniformly increases the temperature of the solar cell over the entire length of the long frame. Can be prevented.

In the concentrating solar power generation unit according to the present invention, the partition plate is configured to define a cross-sectional shape in the short direction of the long frame .

With this configuration, it becomes possible to accurately and firmly define the cross-sectional shape in the short direction of the long frame, improve the strength of the long frame, the light collection accuracy of the condensing lens, power generation efficiency, Reliability can be improved .

In the concentrating solar power generation unit according to the present invention, the condensing lenses are arranged in two rows in the longitudinal direction of the translucent protective plate, and the center of the longitudinal row of the lens group unit region Positioning pins positioned corresponding to the center line passing through the centers of the two condensing lenses located on the edge and provided on the edge of the translucent protective plate fit into the pin fitting portion formed on the top surface It is characterized by being.

With this configuration, the condensing lens (translucent protective plate) can be easily and accurately positioned on the solar cell (elongated frame), so that the collected solar light can be irradiated onto the solar cell with high accuracy. This makes it possible to prevent an unnecessary temperature rise and improve heat resistance and power generation efficiency. Further, since the centers of the condensing lenses arranged in two rows in the longitudinal direction of the translucent protective plate are used as a reference, the positioning of the two positioning pins arranged in the longitudinal direction of the translucent protective plate is further enhanced. It becomes possible to carry out with accuracy.

  Moreover, the concentrating solar power generation device according to the present invention is a concentrating solar power generation unit configured by juxtaposing a plurality of concentrating solar power generation units including a long frame in the short direction of the long frame. A solar power generation apparatus, wherein the concentrating solar power generation unit is a concentrating solar power generation unit according to the present invention.

  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.

  Moreover, in the concentrating solar power generation device according to the present invention, the short direction is a horizontal direction.

  With this configuration, the longitudinal direction of the long frame is made to correspond to the vertical direction, so that the air permeability can be further increased and higher reliability can be obtained.

  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 elongated frame on which the solar cell is mounted, high heat dissipation is ensured with a simple structure and heat resistance. This improves the reliability and achieves high reliability and power generation efficiency.

  Moreover, 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 provided on the pin fitting portion provided on the side of the elongated frame. Because it is configured to fit, the condensing lens is aligned with the solar cell with high accuracy with a simple structure, preventing unnecessary temperature rise and improving heat resistance, realizing high reliability and power generation efficiency There is an effect.

  Moreover, according to the concentrating solar power generation device according to the present invention, a plurality of concentrating solar power generation units each having a vent hole in the longitudinal end portion of the long frame in the short direction of the long frame. Since it is juxtaposed, it has the effect of ensuring high heat dissipation with a simple structure, improving heat resistance, and realizing high reliability and power generation efficiency.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<Embodiment 1>
Based on FIG. 1 thru | or FIG. 6, the concentrating solar power generation unit which concerns on Embodiment 1 of this invention is demonstrated.

  FIG. 1 is an exploded perspective view showing an exploded main part of a concentrating solar power generation unit according to Embodiment 1 of the present invention. FIG. 2 is an explanatory view 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 according to the present embodiment includes a translucent protective plate 41 that protects the top surface of the concentrating solar power generation unit 40, and a basic structure of the concentrating solar power generation unit 40. And a solar cell mounting plate 47 on which the plurality of solar cells 10 are mounted. A condensing lens 42 that condenses sunlight is provided on the back surface (long frame 44 side) of the translucent protective plate 41 by, for example, bonding.

  The translucent protective plate 41 and the solar cell mounting plate 47 are each divided into, for example, three long frames 44 in consideration of heat resistance, thermal expansion, productivity, reliability, maintainability, and the like. It is arranged corresponding to. 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 highly accurate light collection. That is, the lens group unit area LA composed of the translucent protective plate 41 and the mounting unit area BA composed of the solar cell mounting board 47 are arranged corresponding to each other.

  The elongate frame 44 has a U-shape composed of a side portion 44s and a bottom portion 44b. An edge 44f of the top surface (the top surface of the side portion 44s) of the long frame 44 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 44f) of the side portion 44s.

  The side portion 44 s 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 disposed corresponding to the edge 44f. The bottom portion 44b holds a pair of opposing side portions 44s, and is configured to mount the solar cell mounting plate 47 on which the solar cell 10 is mounted on the back surface (opposite side of the long frame 44).

  The translucent protection 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. Note that acrylic resin, polycarbonate, or the like can be used 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, 10 × 2 × 5) corresponding to the long lens group unit area LA. ). 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. Note that polycarbonate, glass, or the like can be used instead of the acrylic resin.

  The long frame 44 is integrally formed as a whole including the side portion 44s and the bottom portion 44b by, for example, roll forming a metal plate such as an iron plate or a steel plate. In addition, a sunlight irradiation hole (not shown) for irradiating the solar cell 10 with sunlight condensed by the condenser lens 42 is formed on the bottom 44b. By forming the long frame 44 from a metal plate such as an iron plate or a steel plate, it is possible 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 correspond to the long mounting unit area BA. A solar cell array (for example, 2 × 5 10 cells) is formed. The solar cell mounting plate 47 is made of, for example, an aluminum plate in consideration of weight reduction and heat dissipation. In addition, the solar cell 10 (solar cell element 11) is the center of the condensing unit region FA for each condensing unit region FA configured corresponding to the condensing lens 42 (the focal position of the condensed sunlight: the sun). It is arranged corresponding to the light irradiation hole).

  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. In addition, an appropriate rim 47f for mounting on the bottom 44b is formed around the solar cell mounting plate 47.

  An end face portion 44t is formed by covering the longitudinal end of the long frame 44 with an appropriate plate member. The end face portion 44t 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 collecting concentrated sunlight. The reliability of the power generation unit 40 is improved.

  The long frame 44 includes a vent hole 44v at an end portion in the longitudinal direction. By providing at the end in the longitudinal direction, an air flow can be generated inside the elongated frame 44 to improve heat dissipation (that is, heat resistance). Note that the vent hole 44v is preferably provided in the bottom portion 44b, but may be appropriately provided in the side portion 44s and the end surface portion 44t.

  By providing the vent hole 44v in the bottom portion 44b, the vent hole 44v is positioned at the bottom portion of the concentrating solar power generation unit 40, and it is possible to reliably prevent the entry of wind and rain, dust and the like from the outside. Therefore, the concentrating solar power generation unit 40 having good weather resistance (rain resistance, moisture resistance, dust resistance, etc.) and high reliability can be obtained.

  The elongated frame 44 preferably includes a partition plate 44d arranged perpendicular to the side portion 44s and the bottom portion 44b. The partition plate 44d can be easily joined to the side portion 44s by welding, rivets or the like. The partition plate 44d makes it possible to accurately define the cross-sectional shape of the long frame 44 in the short direction, and improves the strength of the long frame 44 and the light collecting accuracy of the condensing lens 42 to generate power. Efficiency and reliability can be improved.

  The partition plate 44d is disposed at a position corresponding to the mounting unit area BA and the lens group unit area LA, so that the positional accuracy of the translucent protective plate 41, the solar cell mounting board 47, and the long frame 44 is increased. Further, it is possible to improve the coupling strength and perform highly accurate light collection.

  The partition plate 44d preferably has a ventilation cutout 44dw. By having the ventilation notch 44dw, even when the partition plate 44d is provided, airflow generation in the flow path Fp (FIG. 2) is not hindered, and air permeability (heat dissipation) can be reliably maintained. It becomes possible.

  The concentrating solar power generation unit 40 arranged as a vertical type is supported by a support column 81, is in a tracking state in an operating state, and is opposed to the sunlight Ls by a tracking mechanism 82, so that it is in an inclined state ( Figure 2). That is, the concentrating solar power generation unit 40 arranged as a vertical type reliably generates an air flow (flow path Fp) because the longitudinal direction of the long frame 44 is the vertical direction (vertical direction).

  Since airflow (flow path Fp) is generated inside the elongated frame 44 by the vent holes 44v, it is possible to improve the air permeability with certainty. Therefore, the temperature rise of the solar cell 10 arranged corresponding to the bottom portion 44b can be effectively prevented uniformly, and the temperature rise of the solar cell 10 due to the concentrated sunlight Ls can be prevented, thereby generating power efficiency. And reliability can be improved.

  The vent holes 44v are preferably formed at both ends (both ends) corresponding in the longitudinal direction of the long frame 44 in order to generate the air flow indicated by the flow path Fp. That is, 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 vent holes 44v, and the temperature rise of the solar cell 10 can be further prevented, thereby generating 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.

  The vent hole 44v is constituted by a large number of through holes formed at both ends of the bottom 44b (FIG. 3). The size, density, number, etc. of the through-holes are such that the flow path Fp is effectively generated 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 pores 44v.

  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.

  Since the vent hole 44v is formed of a large number of through holes, there is a risk that wind and rain, dust, etc. may enter from the outside. As a countermeasure, it is preferable that the long frame 44 includes a vent hole covering portion 44c that covers the vent hole 44v.

  The vent hole covering portion 44c can be formed of a plate material bent into a U shape, for example. A plate material (vent hole covering portion 44c) bent into a U-shape is joined to the back surface of the bottom portion 44b by, for example, screwing or welding so as to cover the vent hole 44v.

  By adopting 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 44v. Therefore, weather resistance can be further improved and reliability can be improved.

  The vent hole covering portion 44c can prevent wind and rain and dust from the outside to some extent, but the effect may be reduced against strong wind and rain, fine dust and the like. As a countermeasure, the vent hole covering portion 44c preferably includes a filter 44cf.

  The filter 44cf can be configured, for example, by appropriately arranging a filter made of a material having high weather resistance (for example, a corrosion-resistant metal) in a space between the bottom portion 44b (vent hole 44v) and the vent hole covering portion 44c. With this configuration, it is possible to reliably prevent the intrusion into the long frame 44 even against strong wind and rain, fine dust, etc. without interfering with the air flow in the flow path Fp. The reliability of the unit 40 can be further improved.

  FIG. 6 is an explanatory diagram for explaining a modification of the vent hole covering portion shown in FIG. 4, and (A) is a tracking state in which the concentrating solar power generation unit is operated as a vertical type similarly to FIG. 2. FIG. 5B is a cross-sectional view of the vent hole covering portion showing the action of the vent hole covering portion, and FIG. 9B is a cross sectional view of the vent hole covering portion showing the action of the vent hole covering portion in the resting state where the tracking of FIG. .

  The vent hole covering portion 44c according to the present modification includes a vent path 44w configured by alternately arranging blade plates 44wp facing each other. Since the blade plates 44wp facing each other are alternately arranged, the air passage 44w can be formed in a zigzag shape. Since the air passage 44w is formed in a zigzag shape, the intrusion of the sand dust Ds carried by the wind Fiw entering the air hole 44v from the outside can be eliminated by the blade plate 44wp.

  That is, even in the tracking state (FIG. (A)) and the resting state (FIG. (B)), the blade plate 44wp acts as a dust barrier against the dust Ds, and the ventilation path 44w. Since the dust Ds is eliminated at the entrance of the air, it becomes possible to prevent the dust Ds from entering the inside of the long frame 44 from the vent hole 44v, and the reliability of the concentrating solar power generation unit 40 is improved. Can be made.

  In addition, it is preferable that the blade 44wp is inclined from the root to the tip in the direction from the vent hole 44v toward the entrance (outside) of the vent path 44w. With this configuration, the intrusion of the sand dust Ds can be more reliably prevented, and the sand dust Ds colliding with the blade plate 44wp is dropped to the outside so that the sand dust Ds adheres to the blade plate 44wp and stays in the air passage 44w. This can be prevented. That is, by providing the blade plate 44 wp with the above-described inclination, it is possible to reliably prevent the intrusion of the dust Ds at the entrance of the air passage 44 w and to act as a dust-proof wall (vent air passage 44 w) having a high dust prevention effect. be able to.

<Embodiment 2>
Based on FIG. 7, the concentrating solar power generation device which concerns on Embodiment 2 of this invention is demonstrated.

  FIG. 7 is an explanatory diagram for explaining a main part of the concentrating solar power generation device according to Embodiment 2 of the present invention, and (A) is a front view showing the top side of the concentrating solar power generation unit. (B) is a side view.

  The concentrating solar power generation device 1 according to the present embodiment includes a plurality of (for example, nine) concentrating solar power generation units 40 according to the first embodiment in the lateral direction of the long frame 44. Configured. The short direction of the long frame 44 is preferably the horizontal direction as shown in FIG. With this configuration, since the concentrating solar power generation unit 40 can be arranged and operated in a vertical manner, as shown in FIG. 2, the concentrating type has excellent air permeability, high heat dissipation, and improved reliability. It can be set as the solar power generation device 1. That is, the flow path Fp in the vertical direction can be configured to increase air permeability and heat resistance, and higher reliability can be obtained.

  In the present embodiment, the short direction is the horizontal direction, but the short direction may be the vertical direction. Even in this case, since the air holes 44v are provided, it is possible to ensure a certain air permeability.

<Embodiment 3>
Based on FIG. 8, FIG. 9, the concentrating solar power generation unit which concerns on Embodiment 3 of this invention is demonstrated.

  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 portion of the concentrating solar power generation unit according to Embodiment 3 of the present invention. 9 is a cross-sectional view taken along a plane passing through the center of the positioning pin shown in FIG. 8, (A) is a cross-sectional view of the long frame in the short direction, and (B) is a longitudinal view of the long frame. The state which looked at the side part from the inner side of an elongate frame with sectional drawing in a direction is shown, (C) is an expanded sectional view of a positioning pin.

  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 long frame 44 (the top surface of the side portion 44s, that is, the edging). 44f) and held. The translucent protective plate 41 is provided in advance with a condenser lens 42 that is aligned with the arrangement of the solar cells 10, and the translucent protective plate 41 with respect to the solar cells 10 that are arranged corresponding to the bottom 44 b. It is necessary to fix the condensing lens 42 to the edge 44f in a state where the condenser lens 42 is accurately aligned.

  An edge 41f is formed around the outer periphery of the translucent protective plate 41 so as to correspond to the edge 44f. The edge 41f and the edge 44f are brought into contact with each other so that the translucent protective plate 41 is trimmed. 44f (side portion 44s, long frame 44) is fixed and held.

  The alignment between one translucent protective plate 41 and the condensing lenses 42 (for example, ten) is performed in a state in which the ten condensing lenses 42 are aligned with the arrangement of the corresponding solar cells 10. This can be done by bonding the optical lens 42 and the translucent protective plate 41.

  However, alignment of the edge 41f and the edge 44f of the translucent protective plate 41 is not easy for the following reasons. That is, there is a problem in accuracy to use the outer end portion of the translucent protection plate 41 whose outer shape becomes larger because a large number of condenser lenses 42 are held as a reference. Further, 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 44b is a distance from the solar cell 10 with the side portion 44s existing therebetween. Is difficult because it is far away.

  Therefore, in the present embodiment, as a positioning structure of the translucent protective plate 41, the condensing lens 42c is provided on a surface (condenser lens mounting surface) facing the rim 44f (the top surface of the side portion 44s) of the rim 41f. Positioning pins 41p positioned corresponding to the center are adhered and provided.

That is, the positioning pin 41p is bonded to a position obtained optically with high accuracy on an extension line extending from the center line passing through the centers of the two condenser lenses 42c in the center of the two rows to the border 41f. The condensing lens 42c is a condensing lens located at the center of the plurality of condensing lenses 42 (lens group unit areas LA) disposed on the translucent protective plate 41. Since the centers of the condensing lenses 42c arranged in two rows in the short direction of the translucent protective plate 41 are used as a reference, the positioning of the two positioning pins 41p arranged in the longitudinal direction of the translucent protective plate 41 is determined. it is possible to perform more accurately the.

  Further, the edge 44f is formed with a pin fitting portion 44p corresponding to the positioning pin 41p. The pin fitting portion 44p 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.

  Therefore, by positioning and fitting the positioning pin 41p to the opposing pin fitting portion 44p, the translucent protective plate 41 (condensing lens 42) is trimmed to the edge 44f (side portion 44s, long frame 44). It becomes possible to align with high accuracy, and as a result, the translucent protective plate 41 (condensing lens 42) can be aligned with the solar cell 10 with high accuracy.

  Since the positioning pin 41p is positioned with reference to the center of the condensing lens 42c previously bonded to the translucent protective plate 41 so as to correspond to the solar cell 10, the translucency with respect to the solar cell 10 (long frame 44) is transmitted. It is possible to reliably improve the alignment accuracy of the property protection plate 41 (the condensing lens 42).

  Since the center of the condensing lens 42c located at the center in the longitudinal direction among the plural (for example, ten) condensing lenses 42 is used as a reference point, the translucent protection plate 41 is transparent at both end positions in the longitudinal direction. It is possible to minimize the influence (positional displacement) due to thermal expansion of the optical protective plate 41, the long frame 44, and the solar cell mounting plate 47, and to improve heat resistance and power generation efficiency. Become.

  The positioning pin 41p is bonded firmly to the edge 41f (translucent protective plate 41) with, for example, a double-sided tape 41pb, and then firmly bonded with an adhesive 41pa (FIG. 9C). In this configuration, the fitting to the portion 44p can be reliably performed.

  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. Can be irradiated to the solar cell 10 with high accuracy, and an unnecessary temperature rise can be prevented to improve heat resistance and power generation efficiency.

It is a disassembled perspective view which decomposes | disassembles and shows the principal part of the concentrating solar power generation unit which concerns on Embodiment 1 of this invention. It is explanatory drawing which illustrates notably the improvement of the air permeability in the tracking state which operated the concentrating solar power generation unit shown in FIG. 1 as a vertical type. It is a top view which shows the Example of the vent hole applied to the elongate frame of the concentrating solar power generation unit shown in FIG. FIG. 4 is a perspective view conceptually illustrating a state in which a vent hole covering portion is provided corresponding to the vent hole illustrated in FIG. 3. It is sectional drawing which shows the state in which the ventilation hole coating | coated part shown in FIG. 4 was equipped with the filter. It is explanatory drawing explaining the modification of the ventilation hole covering part shown in FIG. 4, (A) is the ventilation hole covering in the tracking state which operated the concentrating photovoltaic power generation unit as a vertical type like FIG. FIG. 6B is a cross-sectional view of the vent hole covering portion showing the action of the vent hole covering portion in a resting state in which the tracking of FIG. It is explanatory drawing explaining the principal part of the concentrating solar power generation device which concerns on Embodiment 2 of this invention, (A) is a front view which shows the top | upper surface side of a concentrating solar power generation unit, (B) Is a side view. It is a disassembled perspective view explaining the fitting form of the positioning pin applied to positioning with the translucent protection board and side part of the concentrating solar power generation unit which concerns on Embodiment 3 of this invention. It is sectional drawing in the surface which passes along the center of the positioning pin shown in FIG. 8, (A) is sectional drawing in the transversal direction of an elongate frame, (B) is a cross section in the longitudinal direction of an elongate frame. The state which looked at the side part from the inner side of the elongate frame in a figure is shown, (C) is an expanded sectional view of a positioning pin.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Concentration type solar power generation device 10 Solar cell 11 Solar cell element 20 Receiver board 40 Concentration type solar power generation unit 41 Translucent protective plate 41f Edge 41p Positioning pin 42 Condensing lens 44 Long frame 44s Side part 44f Edge 44p Pin fitting portion 44b Bottom portion 44t End surface portion 44v Ventilation hole 44c Ventilation hole covering portion 44cf Filter 44w Ventilation path 44wp Blade plate 44d Partition plate 44dw Ventilation cutout 47 Solar cell mounting plate 47f Border 81 Tracking mechanism BA Unit area Ds Dust FA Condensing unit area Fiw Wind Fp Flow path LA Lens group unit area

Claims (10)

A long frame having side portions and a bottom portion, a solar cell irradiated with sunlight through a solar light irradiation hole formed in the bottom portion, and a sun mounted with the solar cell mounted on the back surface of the bottom portion A battery mounting plate, a condensing lens disposed on a translucent protective plate fixed to the top surface of the side portion and condensing and irradiating the solar cell with sunlight, and a longitudinal end of the elongated frame And an end surface part covering
A concentrating solar power generation unit comprising vents formed at both ends corresponding to the longitudinal direction of the bottom.   The concentrating solar power generation unit according to claim 1, further comprising a vent hole covering portion that covers the vent hole.   The concentrating solar power generation unit according to claim 2, wherein the vent hole covering portion includes a filter.   The concentrating solar power generation unit according to claim 2, wherein the vent hole covering portion includes a vent passage in which blades facing each other are alternately arranged.   The concentrating solar power generation unit according to claim 4, wherein the blades are inclined in a direction from the base to the tip toward the outside of the ventilation path. The long frame includes a partition plate disposed perpendicular to the side and the bottom, and the partition plate includes a plurality of the condensing lenses disposed in a longitudinal direction of the long frame. 6. The collection according to claim 5 , further comprising: a ventilation notch that is arranged at a partition position corresponding to a long lens group unit region to be generated and generates an air flow in a longitudinal direction of the long frame. Optical solar power generation unit. The concentrating solar power generation unit according to claim 6 , wherein the partition plate is configured to define a cross-sectional shape in a short direction of the long frame. The condensing lenses are arranged in two rows in the longitudinal direction of the translucent protective plate, and a center line passing through the centers of the two condensing lenses located at the center of the longitudinal row of the lens group unit region. positioning pins provided on the border of being positioned to correspond the translucent protective plate, claims 1, characterized in that are fitted into pin fitting portion formed on the top surface according to claim 7 The concentrating solar power generation unit according to any one of the above. A concentrating solar power generation apparatus configured by arranging a plurality of concentrating solar power generation units including a long frame in parallel in the short direction of the long frame,
The concentrating solar power generation apparatus according to any one of claims 1 to 8 , wherein the concentrating solar power generation unit is the concentrating solar power generation unit. The concentrating solar power generation device according to claim 9 , wherein the short direction is a horizontal direction.

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