JP2000077698A - Insolation tracking generator and method for assembling the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a maintenance free period further for a long period by simply and rapidly assembling an insolation tracking generator at low cost. SOLUTION: The insolation tracking generator comprises a cell assembly 40 having a solar cell 52 held by a heat spreader 50 formed with a dowel joggle 56, a base panel 22 for containing the assembly 40 and having a hole 220 for inserting the joggle 56, and a heat sink panel 23 for radiating heat to be transferred from the assembly 40 via the panel 22 and having a hole 230 for inserting the joggle 56. In this case, the joggles 56 formed at the spreader 50 are penetrated through the holes 220, 230 of the panel 22 and the panel 23, and caulked to fix the assembly 40 and the panel 23 to the panel 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concentrating and tracking power generation device for converting sunlight energy into electric energy by concentrating while tracking the sun, and a method of assembling the same. The present invention relates to a technique for combining a plurality of components used.

[0002]

2. Description of the Related Art Conventionally, as a photovoltaic power generation system, a flat plate type power generation system and a condensing and tracking type power generation system are known. The flat-panel power generation system is configured to extract electric power from, for example, solar cell panels arranged two-dimensionally on the roof of a house. In this flat-panel power generation system, solar cells for performing photoelectric conversion are fixedly arranged, so that a large amount of sunlight is lost depending on the azimuth and elevation angle of the sun, and the effective power generation time is short. is there.

On the other hand, the concentrating and tracking power generation system includes a power generation unit configured by arranging a plurality of solar cells each having a lens on a frame that can rotate up, down, left, and right. Then, by driving the frame in accordance with the signal from the sun position sensor, the power generation unit is controlled so as to always face the sun vertically. Therefore, sunlight is input perpendicularly to the lens, is collected by the lens, and forms an image on the light receiving surface of the solar cell. Thereby, photoelectric conversion is performed in the solar cell, and power generation is performed.
In this concentrating and tracking power generation system, the solar cell is controlled so that the incident angle of the sunlight is always zero or a value near the solar cell, so that power is generated as long as the sunlight is present. Therefore, there is an advantage that the effective power generation time is substantially increased.

FIG. 6 shows a partial configuration of a power generation unit of such a conventional converging / tracking power generation system. This power generation unit includes a cell assembly 100, a base panel 11
0, a heat sink panel 120, and a lens 130.

[0005] The cell assembly 100 is integrally formed by bonding a ceramic substrate 102 on which an electrode pattern is formed, for example, to a heat spreader 101 for diffusing heat, and fixing a solar cell 103 thereon. ing. The shape of the heat spreader 101 is rectangular, and screw holes 104 for attaching the cell assembly 100 to the base panel 110 are formed at four corners. Although electrode leads are drawn from the cell assembly 100, they are not shown.

[0006] A lens 130 is provided above the cell assembly 100, and sunlight is condensed by the lens 130 and guided to the light receiving surface of the solar cell 103. The base panel 110 constitutes a part of the outer casing of the light-tracking power generation system. This base panel 11
0 is a hole 1 for attaching the cell assembly 100.
11 are formed. The heat sink panel 12
0 is provided to dissipate the heat generated in the cell assembly 100 to the outside. The heat sink panel 120 has a hole 121 for attaching the heat sink panel 120 to the base panel 110.

The power generation unit is assembled by connecting the cell assembly 100, the base panel 110, and the heat sink panel 120 configured as described above with screws 140.

[0008]

The power generation unit of the conventional condensing and tracking power generation system has the following problems because it is configured as described above. That is, when screwing the three members such as the cell assembly 100, the base panel 110, and the heat sink panel 120, a lot of labor is required for the alignment of the holes, and there are many screwing places (4 places / cell). Assembly)
It takes time to assemble. In addition, it is necessary to apply a sealing treatment to prevent the entry of dust and water, and a screw loosening treatment to achieve long-term maintenance-free treatment on the screwed part. It becomes necessary and takes time to assemble. Further, since a component called a screw is required, the total cost increases.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to be able to assemble easily, quickly and at low cost, and to realize a long maintenance-free period. It is an object of the present invention to provide a concentrating and tracking power generation device and a method of assembling the same.

[0010]

According to a first aspect of the present invention, there is provided a light-gathering / tracking type power generator, which achieves the above object.
A concentrating and tracking power generation device that generates power by photoelectrically converting condensed light while tracking the sun, a plate-like member having a projection formed thereon, and a solar cell held by the plate-like member. A cell assembly containing the cell assembly, a housing having a hole into which a projection formed on the plate-like member is inserted, and a housing formed from the cell assembly. A heat sink panel that dissipates heat conducted through the heat sink panel, the heat sink panel having a hole into which a projection formed in the plate-like member is inserted, and a heat sink panel of the housing and the heat sink panel. The cell assembly and the heat sink panel are configured to be fixed to the housing by penetrating a projection formed on the plate-like member through each hole and caulking.

In the concentrator-tracking power generator according to the first aspect, instead of the conventional screwing, the plate-shaped member of the cell assembly is formed in a hole formed in the housing and the heat sink panel. These three members are fastened by crimping through the projection. Therefore,
Since the projection can be used as a guide pin, the positioning of these three members is simplified, and the screwing operation is not required, so that the assembling time can be reduced. In addition, since the above-mentioned three members are joined by caulking, the sealing performance is excellent, and it is not necessary to perform a screw locking process. The joining operation by swaging is suitable for mass production because it is easy to mechanize. Further, since the screw itself is not required, cost reduction is possible.

[0012] In the concentrator-tracking power generator according to the first aspect, the plate member included in the cell assembly may be a heat spreader for diffusing heat generated in the solar cell. This heat spreader is provided for the purpose of diffusing the heat generated in the solar cell, but by forming a protrusion on the heat spreader, it does not require a new member for fastening the three members, An increase in the number of parts can be suppressed.

The projection formed on the heat spreader of the cell assembly can be formed by half blanking doweling. This processing method is suitable for mass-producing cell assemblies.

A method for assembling a concentrating and tracking power generation apparatus according to a second aspect of the present invention is a condensing and tracking power generating apparatus for generating power by photoelectrically converting condensed light while tracking the sun for the same purpose as described above. A method for assembling a tracking-type power generation device, comprising: a cell assembly including a solar cell and a plate-like member holding the solar cell; A heat sink panel for forming a hole into which the protrusion formed on the plate-like member is inserted, and dissipating heat conducted from the cell assembly through the housing; The cell assembly and the heat sink panel are formed in the housing by forming a hole into which the protrusion is inserted, and caulking the holes formed in the housing and the heat sink panel by passing the protrusions formed in the plate-shaped member through the holes. Fix It is configured to. In this case, the protrusion formed on the cell assembly can be formed by half blanking doweling.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings, taking a concentrating and tracking power generation device to which the present invention is applied as an example.

FIG. 1 is a perspective view, partially cut away, showing the entire external appearance of a converging-tracking type power generation device to which the present invention is applied. This light-gathering-tracking type power generation device is configured by attaching 5 × 3 power generation modules 10 to a frame 12 supported by a support 11. Hereinafter, the 15 power generation modules are collectively referred to as a power generation unit 16.

At the lower end of the column 11, a horizontal drive mechanism 13 for rotating the entire frame 12 in the azimuth direction is provided. Also, a frame 1 is provided at the upper end of the support 11.
Vertical drive mechanism 14 for rotating the whole 2 in the elevation direction
Is provided.

Each power generation module 10 has a plurality of solar cells that generate DC power by irradiating light condensed by a lens, as will be described in detail later. The DC power generated by each solar cell is Are integrated and output to the outside. In this condensing and tracking power generation device, the power generation modules 10 are electrically connected in series. Therefore, the DC power from each power generation module 10 is integrated and output from an external terminal (not shown) to the outside as the power generated by the concentrating and tracking power generation device.

A sun position sensor 15 for detecting the sun position is provided at a predetermined portion (upper portion in FIG. 1) of the frame 12. A signal indicating the direction of the sun obtained from the sun position sensor 15 (hereinafter, referred to as a "sun position sensor signal") is supplied to a control unit (not shown). The control unit operates the horizontal drive mechanism 13 and the vertical drive mechanism 14 based on the sun position sensor signal from the sun position sensor 15 so that the light receiving surface of the power generation unit 16 always vertically faces the sun. As a result, the concentrating and tracking power generation device always generates power while tracking the sun.

Next, the details of the power generation module 10 will be described with reference to FIG.
This will be described with reference to FIG. In this embodiment, 4 × 3 solar cells are used for one power generation module 10. Note that the number of solar cells used in the power generation module 10 is not limited to the above, and can be arbitrarily determined.

As shown in the exploded perspective view of FIG. 2, the power generation module 10 includes a lens 20, a lens frame 21, a base panel 22, and a heat sink panel 23. The housing of the present invention corresponds to the lens frame 21. In addition, about the assembling method of the power generation module 10,
Details will be described later.

The lens 20 is constituted by a plate member made of, for example, acrylic resin, which is functionally divided into 4 × 3 regions, and a Fresnel lens 30 is formed in each of the 12 regions. . The twelve Fresnel lenses 30 are attached to the twelve cell assemblies 4 attached to the base panel 22.
0 (the details will be described later). When the Fresnel lens 30 is exposed to the atmosphere, the light transmittance of the Fresnel lens 30 may deteriorate over time. In order to avoid such a problem, it is preferable to provide, for example, an ultraviolet cut glass on the upper surface of the lens 20.

The lens frame 21 is formed in a box shape having upper and lower surfaces opened by, for example, resin. The weight of the power generation unit 16 is reduced by using resin. Further, a stopper 27 is formed on the outer surface of the lens frame 21. This lens frame 21
Is a lens (not shown) formed on the top of the lens 20.
And functions as a spacer for securing a distance corresponding to the focal length of each Fresnel lens 30.

The base panel 22 is formed in a box shape with an open top. The frame 29 formed at the upper end of the base panel and the stopper 27 of the lens frame 21
The lens frame 21 and the base panel 22 are firmly connected to each other by, for example, screws. As shown in FIG.
× 3 cell assemblies 40 are arranged. Dowel holes 220 for penetrating dowels 56 formed in the heat spreader 50 described later are formed at four corners of a region corresponding to each cell assembly 40 on the bottom surface of the base panel 22. A method for attaching the cell assembly 40 to the base panel 22 will be described later in detail.

The twelve cell assemblies 40 are electrically connected in series via the electrode leads of each cell assembly 40. This series connection is realized by connecting different electrode leads of adjacent cell assemblies 40 with a bus bar 41. The positive electrode lead of the cell assembly 40 at one end of the twelve cell assemblies 40 connected in series is connected to the first output terminal 24 provided on one side surface of the base panel 22 and the cell assembly 40 at the other end. Are connected to the second output terminals 25 provided on the other side surface of the base panel 22, respectively. Then, power is taken out from the first output terminal 24 and the second output terminal 25.

The heat sink panel 23 is attached to the bottom surface of the base panel 22. At a position (not shown in FIG. 2) corresponding to the dowel hole 220 of the base panel 22 on the upper surface of the heat sink panel 23, a dowel hole is formed for the same purpose as the dowel hole 220 of the base panel 22. 230 are formed. A method of attaching the heat sink panel 23 to the base panel 22 will be described later in detail. The heat sink panel 23 is provided with a plurality of heat radiation fins. The radiation fins act to increase the dissipation of heat generated in each cell assembly 40 attached to the base panel 22.

Next, the configuration of the cell assembly 40 is as follows.
This will be described with reference to the side view shown in FIG. The cell assembly 40 includes a heat spreader 50, a substrate 51, a solar cell 52, a secondary condenser lens (SOE) 53, a positive electrode lead 54, and a negative electrode lead 55.

The heat spreader 50 is a solar cell 5
2 to diffuse the heat generated by the collected light.
The heat spreader 50 is connected to the cell assembly 40
Is also used as a fastener for attaching the base to the base panel 22. That is, the dowels 56 are formed at the four corners of the heat spreader 50 (portions where the conventional screw holes are provided) by half blanking doweling. This dowel 56 corresponds to the projection of the present invention.

A substrate 51 is adhered on the heat spreader 50. The substrate 51 is formed of, for example, a ceramic substrate on which an electrode pattern (not shown) is formed. A solar cell 52 is fixed on the substrate 51, and electrodes (not shown) of the solar cell 52 are connected to electrode patterns formed on the substrate 51.

A secondary condenser lens (SOE) 53 is adhered on the solar cell 52. The secondary condenser lens 53 is provided to absorb the optical axis shift of the Fresnel lens 30. That is, even if the light from the Fresnel lens 30 is incident on a position shifted from the center of the upper surface of the secondary condenser lens 53, the total incident light is totally reflected by the inner wall surface of the secondary condenser lens 53, so that the total incident light is It is led to the cell 52.

A positive electrode lead 54 and a negative electrode lead 55 are connected to the electrode pattern formed on the substrate 51. The positive electrode lead 54 and the negative electrode lead 5
Electric power from the solar cell 52 is taken out to the outside via 5.

The cell assembly 4 configured as described above
At 0, the light collected by Fresnel lens 30 is
The light is guided to the upper surface of the secondary condenser lens 53. Almost all the light guided to the upper surface of the secondary condenser lens 53 is transmitted through the secondary condenser lens 53 and guided to the light receiving surface of the solar cell 52. As a result, photoelectric conversion is performed in the solar cell 52, and power is output from the positive electrode lead 54 and the negative electrode lead 55 as power.

Next, a method of assembling the power generation module 10 will be described with reference to FIGS. First, the base panel 22 is placed on the heat sink panel 23, and the position of the dowel hole 220 of the base panel 22 and the position of the dowel hole 230 of the heat sink panel 23 are matched. This alignment need not be strictly performed. Next, the cell assembly 40 is sequentially placed on the base panel 22 while inserting the dowels 56 formed in the heat spreader 50 into the dowel holes 220 and 230. At this time, since the dowels 56 function as a kind of guide pins, the dowel holes 220 of the base panel 22 and the dowel holes 230 of the heat sink panel 23 exactly match when all the cell assemblies 40 are mounted. become.

Next, with the entire cell assembly 40 mounted on the base panel 22, the power generation module 10 is set on a caulking machine, and the dowels 56 are simultaneously pressed to caulk. Thereby, for example, as shown in FIG. 5, the three members such as the heat spreader 50, the base panel 22, and the heat sink panel are firmly connected. In the caulking machine, it is not necessary to caulk all the dowels 56 at the same time, and it may be configured to caulk one by one or several.

According to this embodiment, the three members such as the heat spreader 50, the base panel 22 and the heat sink panel are joined by caulking, so that the assembling time can be drastically shortened as compared with the conventional screw fastening, and This coupling method is suitable for mass production. Further, since the dowels 56 formed on the heat spreader 50 can be used as guide pins, the labor required for the above-mentioned three-member alignment can be reduced.

Further, since the sealing performance is improved by the connection by caulking, there is no need to perform a sealing process for preventing the entry of dust and water, and a long maintenance-free period can be realized. Also, since it is not necessary to perform a screw loosening prevention process, the assembling time is reduced. Further, since screws are unnecessary, the cost of parts and the management cost thereof can be reduced.

The caulking may be performed after applying a heat radiation adhesive between the base panel 22 and the heat sink panel 23. In this case, the sealing performance and the heat conduction performance can be further improved.

[0038]

As described in detail above, according to the present invention,
It is possible to provide a light-gathering-tracking-type power generator that can be assembled easily and quickly at low cost, and that can realize a long maintenance-free period, and a method for assembling the same.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing the entire appearance of a converging / tracking power generation device to which the present invention is applied.

FIG. 2 is an exploded perspective view showing a power generation module of the light-tracking power generation device according to the embodiment of the present invention.

FIG. 3 is an exploded perspective view showing the base panel shown in FIG. 2 in detail.

FIG. 4 is a side view showing a configuration of the cell assembly shown in FIG. 3 and a view for explaining an attached state thereof.

FIG. 5 is a diagram for explaining a state where the power generation module of the condensing and tracking power generation device according to the embodiment of the present invention is assembled by caulking.

FIG. 6 is a side view showing a partial configuration of a power generation unit in a conventional condensing and tracking power generation system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Power generation module 11 Prop 12 Frame 13 Horizontal drive mechanism 14 Vertical drive mechanism 15 Sun position sensor 16 Power generation unit 20 Lens 21 Lens frame 22 Base panel 23 Heat sink panel 24 First output terminal 25 Second output terminal 27 Stopper 29 Frame 30 Fresnel lens Reference Signs List 40 Cell assembly 41 Bus bar 50 Heat spreader 51 Substrate 52 Solar cell 53 Secondary condenser lens 54 Positive electrode lead 55 Negative electrode lead 56 Dowel 220, 230 Dowel hole

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Naofumi Nagata 1-10-1, Shinsayama, Sayama City, Saitama Prefecture Honda Engineering Co., Ltd. (72) Inventor Yuzo Nagai 1-10-1, Shinsayama, Sayama City, Saitama Prefecture Hong DA Engineering Co., Ltd. F-term (reference) 5F051 BA17 EA01 JA02 JA09 JA10 JA13 KA03

Claims (5)

[Claims] 1. A concentrating and tracking power generation device for generating electricity by photoelectrically converting condensed light while tracking the sun, comprising: a plate-like member having a projection; A cell assembly including a solar cell formed therein, a housing in which the cell assembly is housed, and a housing formed with a hole into which a protrusion formed in the plate-like member is inserted, and the cell assembly A heat sink panel for dissipating heat conducted through the housing from the heat sink panel, the heat sink panel having a hole into which a projection formed on the plate-like member is inserted, and And a converging / tracking power generator in which the cell assembly and the heat sink panel are fixed to the housing by projecting a protrusion formed on the plate-like member through each hole of the heat sink panel and caulking. 2. The concentrating and tracking power generation device according to claim 1, wherein the plate-like member included in the cell assembly is a heat spreader for diffusing heat generated in the solar cell. 3. The concentrating and tracking power generation device according to claim 3, wherein the protrusion formed on the heat spreader of the cell assembly is formed by half blanking doweling. 4. A method of assembling a concentrating and tracking power generation apparatus for generating electricity by photoelectrically converting condensed light while tracking the sun, comprising: a solar cell; and a plate-like member holding the solar cell. Forming a protrusion on the plate-shaped member of the cell assembly including: a housing for accommodating the cell assembly; forming a hole into which the protrusion formed on the plate-shaped member is inserted; A hole into which a protrusion formed on the plate-like member is inserted is formed in a heat sink panel that dissipates heat conducted through the housing, and the plate-like hole is formed in each hole of the housing and the heat sink panel. A method of assembling a converging / tracking type power generator, wherein the cell assembly and the heat sink panel are fixed to the housing by penetrating a projection formed on a member and caulking. 5. The method according to claim 4, wherein the projection formed on the cell assembly is formed by half blanking doweling.