JP2011159910A - Solar power generating apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a solar power generating apparatus in the simplified structure, which orients all light-receiving surfaces of a plurality of solar cell panels having the light-receiving surfaces provided almost along the flat surface, nearly vertically toward the radiating direction of the sun light by tracing movement of the sun. <P>SOLUTION: The solar power generating apparatus is provided with: a panel supporting means for supporting a plurality of solar cell panels to allow the light-receiving surfaces to respectively rotate, keeping in almost parallel conditions with each other around the panel rotating axes almost parallel to a first straight line; a rotation supporting means for supporting the panel supporting means for a fixed object to rotate around the rotating axes of the supporting means almost parallel to a second straight line crossing the first straight line; a panel rotating means for rotating in response to the plurality of solar cell panels around the rotating axes of the panel; and a supporting means rotating means for rotating the panel supporting means around the rotating axes of the supporting means. All light-receiving surfaces of the plurality of solar cell panels are oriented nearly vertically in the radiating direction of the sun light by tracing movement of the sun, only with both rotations of the panel supporting means by the supporting means rotating means, and the plurality of solar cell panels by the panel rotating means. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a solar power generation device, and more specifically, includes a plurality of solar cell panels having a light receiving surface substantially along a plane, and the light receiving surfaces of the plurality of solar cell panels follow the movement of the sun. The present invention relates to a solar power generation device that can be directed substantially perpendicular to the irradiation direction.

Solar power generation devices that generate power by receiving sunlight are attracting attention in order to cope with the prevention of environmental destruction associated with depletion of fossil fuels and increased carbon dioxide emissions (for example, Patent Document 1).
Patent Document 1 states that “the power generation panel can always be directed toward the sun, and the power generation efficiency is improved by the mechanism that tracks the rotation of the earth in accordance with the daylight hours regardless of the season such as summer and winter. It was made for the purpose of “providing an improved tracking solar power generation system” (after paragraph number 0008 in the detailed description of the invention of Patent Document 1). Specifically, as shown in FIG. In addition, a plurality of power generation units U are arranged in a matrix at predetermined intervals in the housing 3, and are configured as a power generation panel 2 that receives sunlight and generates power. The power generation unit U of the power generation unit U is a double angle of the inclination angle of the ground axis E around the axis 10 (second axis β) orthogonal to the first axis α in which the base axis Ua is inclined at the same angle as the installation location (latitude). It is connected to an interlocking mechanism 17 that interlocks and displaces synchronously. It is directly fixed to the rotating base member 8 supported by the frame body 7 constituting the second drive support mechanism 18. The interlocking mechanism 17 uses the base shaft Ua of the plurality of power generation units U as the interlocking shaft 19, etc. It is attached so as to be capable of swinging at intervals, and is configured to be synchronously displaced by a double angle of the inclination angle of the ground axis E by the drive means 20 and the swing transmission shaft 21 provided at the corners of the casing 3. The rotation base member 8 supported by the frame body 7 constituting the second drive support mechanism 18 is installed in the axial direction (latitude) in the same manner as the solar tracking device 1 in the tracking solar power generation system shown in FIG. As the first axis α that is inclined at the same angle as the first axis α, the inclination is fixed to the latitude equal to the latitude in the northern direction in the northern hemisphere and in the southern direction in the southern hemisphere according to the installed latitude. The drive unit of the interlock mechanism 17 is connected to the plurality of power generation units U in the housing 3. The stage 20 is driven, and the light-receiving surface is aligned with the rocking transmission shaft 21 through the interlocking shaft 19 and synchronously displaced in the range of a double angle of the inclination angle of the ground axis E within a range of 47 degrees. The casing 3 constituting the power generation panel 2 is rotated counterclockwise at a constant angular velocity of 15 degrees / hour around the rotation axis (first axis α) of the rotation base member 8. By driving the driving means 9 of the rotating base member 8 to rotate around, the light-receiving surface of the power generation panel 2 can be directed to sunlight according to the movement of the sun "(Patent Document 1). In the detailed description of the invention, paragraph number 0033 subsequent stage to paragraph number 0036) are disclosed.

Japanese Unexamined Patent Publication No. 2007-281058 (for example, paragraph numbers 0001 to 0002, 0008 to 0009, 0033 to 0036 in the summary and detailed description of the invention, FIGS. 1, 3 and 4)

Certainly, in the solar light tracking device 1 disclosed in Patent Document 1, (1) the first axis α is fixed at a slope equal to the installed latitude, and (2) the axis 10 (first) orthogonal to the first axis α. The plurality of power generation units U in the casing 3 are synchronously displaced around the two axes β), and (3) the casing 3 is moved around the rotation axis (first axis α) at a constant angular velocity of 15 degrees / By rotating counterclockwise at times, the light receiving surface of the power generation panel 2 can be directed to sunlight in accordance with the movement of the sun.
However, as described above, the solar light tracking device 1 disclosed in Patent Document 1 includes (1) angle adjustment of the first axis α according to the installed latitude and (3) the housing 3 around the first axis α. Since rotation is required, the frame body 7 is supported on the base 5 via the bearing 6 so as to be rotatable, and the rotation base member 8 supporting the housing 3 is supported on the frame body 7 so as to be rotatable. By doing so, the light-receiving surface of the power generation panel 2 disposed in the housing 3 can be directed to sunlight in accordance with the movement of the sun, and the housing 3 can be a structure having a large size and weight. Must be supported by two axes. For this reason, since two complicated structures for supporting the housing 3 that can be a large structure in both size and weight are required, the configuration of the solar light tracking device 1 becomes complicated (installation cost and maintenance inspection). May increase).

  Therefore, in the present invention, all the light receiving surfaces of the plurality of solar battery panels (power generation panel 2 in Patent Document 1) having a light receiving surface substantially along a plane follow the movement of the sun and are substantially perpendicular to the sunlight irradiation direction. It aims at providing the solar power generation device of the simple structure which can be turned to.

  A solar power generation device of the present invention (hereinafter referred to as “the present device”) is a solar power generation device that is supported by a fixed object and generates power by receiving sunlight, and has a plurality of light receiving surfaces substantially along a plane. Panel support for supporting a solar cell panel and a plurality of solar cell panels so that the light receiving surfaces are substantially parallel to each other around a panel rotation axis that is a rotation axis substantially parallel to the first straight line. And a rotation support means for supporting the panel support means with respect to the fixed object so as to be rotatable around a support means rotation axis which is a rotation axis substantially parallel to the second straight line intersecting the first straight line, and a plurality of rotation support means Panel rotating means for rotating the solar battery panel around the panel rotation axis, and support means rotating means for rotating the panel support means about the support rotation axis. The panel support means by the support means turning means, and the panel By rotating both the plurality of solar cell panels by the rotating means, it follows the movement of the sun and directs all the light receiving surfaces of the plurality of solar cell panels substantially perpendicularly to the sunlight irradiation direction. It is a solar power generation device.

This device is supported by a fixed object and is a solar power generation device that generates power by receiving sunlight, as in the solar tracking device 1 of Patent Document 1, and is described later as well as business sites such as factories and shops. Because of its simple structure and easy installation and maintenance, it is suitable for installation in ordinary houses.
The apparatus includes a plurality (two or more) of solar cell panels, a panel support unit that supports the plurality of solar cell panels, a rotation support unit that supports the panel support unit, and a panel that rotates the plurality of solar cell panels. Rotating means and supporting means rotating means for rotating the panel supporting means.
The solar cell panel is a plate-like panel that generates power by being irradiated with sunlight, and has a light receiving surface substantially along a plane, like the power generation panel 2 of Patent Document 1. Since more power is generated when the light receiving surface is irradiated with more sunlight per unit area, it is preferable that the light receiving surface is oriented perpendicularly to the direction of sunlight irradiation (the light receiving surface is directed toward the sun).
The panel support means is configured such that the light receiving surfaces of the plurality of solar cell panels are substantially parallel to each other, and the plurality of solar cell panels are arranged with a panel rotation axis (the panel rotation axis is a rotation axis substantially parallel to the first straight line). Are supported so as to be pivotable about each other. The state in which the light receiving surfaces are substantially parallel to each other may include a state in which the light receiving surface belongs to one plane at one rotation position with respect to the panel rotation axis.
The rotation support means is a support means rotation axis for the panel support means with respect to the fixed object (the support means rotation axis is a rotation axis substantially parallel to the second straight line intersecting the first straight line). It is supported so that it can rotate. Note that a straight line that intersects the first straight line is selected as the second straight line, but the straight line that intersects the first straight line is a straight line that forms an intersection with the first straight line. Straight lines parallel to straight lines are not included.
The panel rotation means rotates the plurality of solar cell panels supported by the panel support means in conjunction with each other about the panel rotation axis (the plurality of solar cell panels move together).
The supporting means rotating means rotates the panel supporting means for supporting the plurality of solar battery panels around the supporting means rotating shaft.
And in this apparatus, the movement of the sun follows only by both the rotation of the panel support means by the support means rotation means and the rotation of the plurality of solar cell panels by the panel rotation means, The light-receiving surfaces of all of the plurality of solar battery panels are oriented substantially perpendicular to the sunlight irradiation direction.
For this reason, in this apparatus, the panel support means (the housing 3 in Patent Document 1) that supports a plurality of solar cell panels and can be a large-sized structure is supported by only one support means rotation shaft. It is sufficient to support the panel support means (Patent Document 1 in which the housing 3 in the case of Patent Document 1) is supported by two axes. The number of complicated mechanisms for pivoting can be reduced from two to one. For this reason, this device has a simple structure as compared with the solar light tracking device 1 of Patent Document 1, and follows all the light receiving surfaces of the plurality of solar cell panels having the light receiving surfaces substantially along the plane following the movement of the sun. It is a solar power generation device with a simple structure that can be directed substantially perpendicular to the direction of sunlight irradiation. Since the pivotal support mechanism of the panel support means that can be a large structure in both size and weight takes up space with a complicated heavy load and requires maintenance, the reduction in the number of pivotal support mechanisms in this apparatus It reduces the cost of installation and maintenance inspection of this device, increases the degree of freedom of installation location, and makes it easier to install in ordinary houses.

In the present apparatus, the second straight line may be substantially vertical.
As a result, the support means rotation axis also becomes substantially vertical. Therefore, the height of the center of gravity of the panel support means is determined at any rotation position around the support means rotation axis of the panel support means by the support means rotation means. Since it is substantially constant (the panel support means rotates horizontally), the panel support means can be smoothly rotated by the support means rotation means.

In this apparatus, the first straight line and the second straight line may be orthogonal (hereinafter referred to as “orthogonal axis main apparatus”).
By doing so, the movement direction of the light-receiving surface due to the rotation of the panel support means by the support means rotation means and the movement direction of the light-receiving surfaces due to the rotation of the plurality of solar cell panels by the panel rotation means are orthogonal to each other. Therefore, it is necessary to follow the movement of the sun and direct the light-receiving surfaces of all of the plurality of solar battery panels to sunlight. The rotation of the solar cell panel can be reduced. This can reduce the energy used for both of these rotations, so that the energy (generated power) generated by the apparatus can be substantially increased (the generated power of the apparatus for these rotations). If this is used, the electric power taken out from the apparatus can be increased.)

In the case of the orthogonal axis device, at least two or more panel rotation axes substantially intersect a reference straight line which is a straight line including the second straight line and perpendicular to the first straight line. The surface may face upward (hereinafter referred to as “reference straight line defining main device”).
By doing so, the panel rotation means is centered on the panel rotation axis by equally displacing the portion of the plurality of solar cell panels that are rotated about the panel rotation axis at an equal distance from the reference straight line. Since the plurality of solar battery panels can be rotated while the plurality of light receiving surfaces are substantially parallel to each other, a link bar (attached so as to displace the portion of the same distance) that is substantially parallel to the reference straight line is used. For example, the apparatus can be easily configured.
Note that the light receiving surface faces upward means that the light receiving surface is illuminated by sunlight irradiated from vertically above, and does not include a state where the light receiving surface is vertical and a state where the light receiving surface is directed downward. Moreover, what the light-receiving surface may face upwards should just be what can follow the movement of the sun and the light-receiving surface can face upwards.

In the case of this apparatus for defining a reference straight line, a plurality of solar cell panels are projected on a projection plane that is a plane parallel to the light receiving surface, regardless of the rotation position of the plurality of solar cell panels around the panel rotation axis. When all of the light-receiving surface is orthographically projected, none of the projections may overlap (hereinafter referred to as “shadeless apparatus”).
In this way, the light receiving surfaces of the plurality of solar cell panels are shaded from each other no matter how the solar light movement surfaces follow the movement of the sun so that the light receiving surfaces of all the solar cell panels are oriented substantially perpendicular to the direction of sunlight irradiation. (No light-receiving surface shades other light-receiving surfaces), so that all the light-receiving surfaces are exposed to sunlight and can efficiently generate power.

In the case of this apparatus without shade, the second straight line and the reference straight line may intersect at an angle of 40 to 50 degrees.
When this apparatus without shade is configured, a dimension (E2) of the apparatus in the second linear direction and a plane perpendicular to the first straight line including the second straight line according to the angle formed by the second straight line and the reference straight line. The ratio (E2 / E1) to the dimension (E1) in the direction perpendicular to the second straight line changes. Normally, the ratio (E2 / E1) closer to 1 is often easier to select the installation location of the apparatus and the construction installation, and for that purpose, the angle at which the second straight line and the reference straight line intersect is set as the lower limit. Preferably, it is 30 degrees or more, more preferably 35 degrees or more, most preferably 40 degrees or more, and the upper limit is preferably 60 degrees or less, more preferably 55 degrees or less, and most preferably 50 degrees or less (most preferably 40 to 50 degrees, most preferably 45 degrees).

In the present apparatus, all of the light receiving surfaces of the plurality of solar battery panels may be in a substantially horizontal state.
In order to receive a lot of sunlight, the light receiving surfaces of multiple solar panels are usually configured to have a large area, but on the other hand, if a strong wind like a typhoon blows on the device, There is a possibility that the light receiving surface is subjected to strong wind and the apparatus including the solar cell panel is damaged. In order to prevent or reduce this, all of the light receiving surfaces of the plurality of solar battery panels may be in a substantially horizontal state (generally, the wind blows in the horizontal direction) in a strong wind ( This reduces the wind receiving area for the wind blowing in the horizontal direction.)

In this apparatus, the rotation of the panel support means by the support means rotation means and the rotation of the plurality of solar cell panels by the panel rotation means are controlled in accordance with the assumed movement of the sun. There may be.
In this device, in order to follow the movement of the sun and direct the light-receiving surfaces of all of the plurality of solar battery panels substantially perpendicular to the sunlight irradiation direction, the position information of the sun to which the light-receiving surface should be directed is necessary. In order to obtain the position information of the sun, there are methods based on the actual sun by observing the actual sun in the sky or detecting the direction of the sunlight that is actually shining, Or calculated by a computer according to a program) or using the position information of the sun assumed by a chart showing the orbit of the sun. If you use a method that uses solar position information that is assumed by calculations, etc., you do not need to be based on the actual sun. The cost required for the arrangement can be reduced compared to the case of using a detector for detecting the solar position and the direction of sunlight irradiation, etc. In addition, even when the sun position is not clear, such as cloudy, the light receiving surface can be directed to the correct sun position.

It is a right view of the solar power generation device (this device) of the present invention of one embodiment. FIG. 2 is a rear view of the apparatus (as viewed from the direction of arrow B in FIG. 1). It is a right view of this apparatus which shows the state which rotated the light-receiving surface from the state of FIG. It is a right view of this apparatus which shows the state which rotated the light-receiving surface from the state of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the present invention is not limited by these.

FIG. 1 is a right side view of a solar power generation device (this device) 11 according to an embodiment of the present invention (a state in which light receiving surfaces 63a, 63b, and 63c of solar cell panels 61a, 61b, and 61c described later are substantially vertical). FIG. 2 is a rear view of the apparatus 11 (shown as seen from the direction of arrow B in FIG. 1), and FIG. 3 is a light receiving surface 63a, 63b, 63c (described later) from the state of FIG. Is a right side view of the apparatus 11 showing a state where the light receiving surfaces 63a, 63b, and 63c are at an angle of about 45 degrees with respect to the vertical (shown from the same position as FIG. 1). 4 is a right side of the apparatus 11 showing a state in which the light receiving surfaces 63a, 63b, 63c are further rotated from the state of FIG. 3 (a state where the light receiving surfaces 63a, 63b, 63c are substantially horizontal). Plan view (shown from the same position as FIG. 1) A.
The apparatus 11 will be described with reference to FIGS. 1 to 4. In the figure, the vertical upward direction is indicated by an arrow A1, and the vertical downward direction is indicated by an arrow A2.

  The apparatus 11 is roughly based on a base 21 fixed on a horizontal installation surface 101 (for example, a concrete floor surface) and a base so as to stand vertically upward (in the direction of arrow A1) from the base 21. A base shaft portion 31 fixed to the base portion 21, a support portion 41 mounted on the base portion 21 so as to be rotatable around the base shaft portion 31, and a pivotally supported by the support portion 41. Panel holding portions 51a, 51b, 51c, solar cell panels 61a, 61b, 61c attached and held to the panel holding portions 51a, 51b, 51c, and links for rotating the panel holding portions 51a, 51b, 51c, respectively. A pair of rods 71 (as shown in FIG. 2), a link driving unit 81 that drives the link rod 71, and a support that rotates the support unit 41 around the base shaft portion 31 with respect to the base unit 21. A drive unit 91; That. In addition, in order to facilitate the understanding of the relationship between the base portion 21, the base shaft portion 31, and the support portion 41, the base shaft portion 31 in the drawing shows a cross section by a plane including an axis C described later. Yes.

  The base 21 is combined with a plurality of rod-like lower members 25 (mounted from the upper side, like a “field” when viewed from above) mounted and fixed on a horizontal installation surface 101 (here, a concrete floor surface). And a plurality of bar-shaped upper members 23 mounted on the lower member 25 and fixed to the lower member 25, and a plurality of bar-shaped upper members 23 attached to the upper surfaces of the upper members 23. The upper surface of the upper surface plate 27 is a smooth surface substantially belonging to a plane (horizontal plane) parallel to the installation surface 101. The surface plate 27 (see FIG. 2, not shown in other drawings). Is forming.

  The base shaft portion 31 includes a shaft main body portion 31a configured by a tubular member having a hollow right circular cylinder shape (a right circular cylinder with an axis C described later as an axis), and an edge portion attached to the outer surface of the shaft main body portion 31a. And a plurality of plate-like leg portions 31b (specifically, radially attached to the outer peripheral surface of the shaft main body portion 31a) and formed by the shaft main body portion 31a. A plurality of plate-like leg portions 31b is a base portion so that a shape axis (axis C coinciding with an imaginary straight line indicated by a dotted line in the figure) is substantially perpendicular to the installation surface 101. 21 (upper member 23).

The support part 41 is inserted into the support part main body part 43 formed by fixing a plurality of rod-shaped members to each other and the shaft main body part 31a of the base shaft part 31 formed on the lower surface of the support part main body part 43 (free fitting). A shaft fitting hole 45, a bearing portion 47 attached to the inner surface of the shaft fitting hole 45 and fitted around the shaft main body 31a so as to be rotatable around the axis C, and attached to the lower surface of the support main body 43. And a wheel portion 49 (see FIG. 2, not shown in FIGS. 1, 3, and 4) that rolls on the upper surface of the upper surface plate 27 of the base portion 21.
1, 3, and 4, the wheel portions 49 are not illustrated in FIGS. 1, 3, and 4, but six (two of them are shown in FIG. 2) on the circumference around the axis C at approximately equal intervals. Is attached to the lower surface of the support portion main body 43, and the upper surface of the upper surface plate 27 can be smoothly rolled along the circumference.
As described above, the support portion 41 (support portion main body portion 43) rotates around the axis C of the shaft main body portion 31a by the bearing portion 47 attached to the inner surface of the shaft insertion hole 45 on the lower surface of the support portion main body portion 43. The support portion 41 is rotated around the axis C with respect to the base portion 21 by rolling on the upper surface of the upper surface plate 27 of the plurality of wheel portions 49 along the circumference centered on the axis C. Can be smoothly rotated. Note that the axis C is substantially the center of gravity of the rotating portion around the axis C including the support portion 41, the panel holding portions 51a, 51b, 51c, the solar battery panels 61a, 61b, 61c, the link rod 71, and the link driving portion 81. Since it passes, the rotating part can smoothly rotate around the axis C. Further, in addition to the support portion 41 being pivotally supported around the axis C of the shaft main body portion 31 a with respect to the base portion 21, the support portion 41 is also supported by rolling of the upper surface plate 27 of the plurality of wheel portions 49. Therefore, even when a load (for example, an actual load or a wind receiving load) is applied to the support portion 41, the load can be well distributed to the shaft main body portion 31 a and the upper surface plate 27 and transmitted to the base portion 21. For this reason, compared with the case where the load is transmitted only to the shaft main body portion 31a without the plurality of wheel portions 49, the load on the shaft main body portion 31a can be reduced. Maintenance and inspection of the main body 31a can be reduced (this increases the degree of freedom of installation of the apparatus 11).

  The three panel holding portions 51a, 51b, and 51c have the same structure and dimensions, and the same one is used. The panel holding parts 51a, 51b, 51c are support parts for the support plate parts 53a, 53b, 53c and the support plate parts 53a, 53b, 53c arranged to support the solar cell panels 61a, 61b, 61c from the back surface. 41 (supporting portion main body 43) is a support plate portion that is pivotally supported around a rotation shaft 55a, 55b, 55c (here, parallel to the installation surface 101 and substantially horizontal). Portions 57a, 57b, 57c, thereby rotating the solar cell panels 61a, 61b, 61c with respect to the support portion 41 (support portion main body portion 43) by rotating shafts 55a, 55b, 55c (solar cell panel). 61a, 61b, 61c are substantially parallel to the planar light receiving surfaces 63a, 63b, 63c).

  A pair of link rods 71 are provided on the support plate portions support portions 57a, 57b, and 57c of the panel holding portions 51a, 51b, and 51c, and the rotation shafts 59a, 59b, and 59c (see FIGS. 1, 3, and 4). In FIG. 2, the rotation shafts 55a, 55b, and 55c overlap with the rotation shafts 55a, and are not shown in the drawing. Here, the rotation shaft 59a, the rotation shaft 55a, the rotation shaft 59b, the rotation shaft 55b, the rotation shaft 59c, and the rotation shaft 55c are substantially parallel to each other. The three distances between the distance between the rotating shaft 59b and the rotating shaft 55b, and the distance between the rotating shaft 59c and the rotating shaft 55c are substantially equal to each other. Yes. Each of the pair of link rods 71 has a length between the rotation shaft 59a and the rotation shaft 59b along the longitudinal direction, and between the rotation shaft 59b and the rotation shaft 59c along the longitudinal direction. The light receiving surfaces 63a, 63b, and 63c are parallel to each other (for example, FIG. 1 and FIG. 4, including a state belonging to one plane as shown in FIG. 3). In this state, by moving the link bar 71 in the longitudinal direction, the solar cell panels 61a, 61b, 61c can be rotated while the light receiving surfaces 63a, 63b, 63c remain parallel to each other. It can be rotated around the moving shafts 55a, 55b, 55c.

The link drive unit 81 has one end (here, the lower end) side that is mounted on the support unit 41 (support unit main body 43) so as to be rotatable about the rotation shaft 82, and is built in the expansion / contraction main unit 83. And an electric motor 85 (including a speed reducer) for driving a ball screw (not shown). By rotating a ball screw (not shown) built in the expansion / contraction main body 83 in the forward and reverse directions by the electric motor 85, the expansion / contraction main body 83 can be freely expanded / contracted (in the direction of arrow D in FIG. 1).
The other end (here, the upper end) of the expansion / contraction main body 83 is attached to the link rod 71 so as to be rotatable about a rotation shaft 87, and the expansion / contraction direction of the expansion / contraction main body 83 (the direction of arrow D in FIG. 1). Is substantially along the longitudinal direction of the link rod 71, so that the link rod 71 can be reciprocated in the longitudinal direction by expanding and contracting the expansion / contraction main body 83. By reciprocating along, the solar cell panels 61a, 61b, 61c can be rotated forward and backward around the rotation shafts 55a, 55b, 55c while keeping the light receiving surfaces 63a, 63b, 63c parallel to each other. (Note that the rotation range of the solar cell panels 61a, 61b, 61c around the rotation shafts 55a, 55b, 55c is in the state of FIG. 1 in one direction and the state in FIG. 4 in the other direction. Figure 3 shows them A substantially intermediate state limits.).

The support unit drive unit 91 includes an electric motor 93 attached to the base unit 21 (upper member 23), a drive gear member 95 attached to a rotation shaft (substantially parallel to the axis C) of the electric motor 93, and a support unit 41 ( And a driven gear member 97 which is attached to the support main body 43) and meshes with the drive gear member 95 and can rotate about the axis C.
Therefore, by rotating the electric motor 93 forward and backward, the drive gear member 95 is rotated forward and backward, and the driven gear member 97 engaged with the drive gear member 95 rotates forward and backward about the axis C. Thus, the support portion 41 can be rotated forward and backward about the axis C with respect to the base portion 21.

The apparatus 11 is connected with a control unit (not shown).
The control unit includes a computer storing a computer program for calculating the position of the sun at the location according to information (specifically, longitude and latitude) that can specify the location where the apparatus 11 is installed, and the computer A rotation command unit that rotates the electric motor 85 and the electric motor 93 in accordance with a signal to be generated. The computer itself has time information generating means for generating information on the current date and time, and the location in the information (information that can specify the location is input to the computer in advance). The position of the sun is calculated every predetermined time (for example, 5 minutes) and according to the calculated position of the sun (so that the light receiving surfaces 63a, 63b, 63c are substantially perpendicular to the irradiation direction of the sunlight) The rotation command unit is instructed to rotate the electric motor 85 and the electric motor 93. The rotation command unit that receives the command from the computer rotates the motor 85 and the motor 93 according to the command. Such a computer program for calculating the sun position is well-known and will not be described here.
Thus, by controlling the rotation of the electric motor 85 and the electric motor 93 in accordance with the sun position calculated by the computer according to the program, a separate means for detecting the solar position is not required (a detector for detecting the solar position, etc.). Compared to the case of using it, the cost required for the installation can be reduced, and the malfunction of detectors and foreign matters can be prevented.) In addition, when the sun position is not clear such as cloudy weather Also, the light receiving surfaces 63a, 63b, and 63c can be directed to the correct sun position.
As described above, the light receiving surface 63a with respect to the irradiation direction of the sunlight is obtained by the rotation about the axis C by the rotation of the electric motor 93 and the rotation around the rotation shafts 55a, 55b and 55c by the rotation of the electric motor 85. The solar cell panels 61a, 61b, 61c can generate power efficiently by directing 63b, 63c substantially vertically. The electric power generated by these solar cell panels 61a, 61b, 61c is collected and used as it is for household power applications (for example, lighting, air conditioning, etc.) or used for such applications after being stored in a power storage device. Or even sell electricity.

  As described above, the present device 11 is a solar power generation device that is supported by a fixed object (here, the horizontal installation surface 101) and generates power by receiving sunlight, and the light receiving surfaces 63a and 63b substantially along the plane. , 63c and the plurality of solar cell panels 61a, 61b, 61c and the plurality of solar cell panels 61a, 61b, 61c are shown as a first straight line (shown as a dotted line L1 in FIG. 2). The light receiving surfaces 63a, 63b, and 63c are respectively rotated while keeping the light receiving surfaces 63a, 63b, and 63c substantially parallel to each other around the panel rotation shafts 55a, 55b, and 55c that are substantially parallel to the first straight line. Panel support means (moving support section 41 and panel holding parts 51a, 51b, 51c are configured here) that is movably supported, and panel support means (support section 41 and panel holding parts 51a, 51b, 1c.) With respect to a fixed object (horizontal installation surface 101), the support means rotation is a rotation axis substantially parallel to a second straight line (shown as a dotted line L2 in the figure) intersecting the first straight line L1. Rotation support means (here, configured to include a base portion 21 and a base shaft portion 31) that supports the moving shaft (here, the axis C) so as to be rotatable, and a plurality of solar cells Panel rotation means for rotating the panels 61a, 61b, 61c around the panel rotation shafts 55a, 55b, 55c (here, a link bar 71 and a link drive unit 81 are included). Here, the panel rotation means rotates the plurality of solar battery panels 61a, 61b, 61c with respect to a fixed object (horizontal installation surface 101) in association with the panel rotation shafts 55a, 55b, 55c. ) And panel support means (support portion 41 and panel holding portion) 1a, 51b, 51c.) Supporting means rotating means (here, supporting part drive unit 91 is configured to rotate the supporting means rotating shaft (axis C)). Then, the support means rotating means is a panel support means (having support portion 41 and panel holding portions 51a, 51b, 51c) with respect to a fixed object (horizontal installation surface 101), and a support means rotating shaft (axis C). Of the panel support means (having the support part 41 and the panel holding parts 51a, 51b, 51c) by the support means rotation means (support part drive part 91). Both rotation and rotation of the plurality of solar cell panels 61a, 61b, 61c by the panel rotation means (having the link rod 71 and the link driving unit 81) (rotation about the axis C, Panel rotation shaft 55a, 55b, 55c center rotation) The solar power generation device that follows the movement of the sun and can direct all the light receiving surfaces 63a, 63b, 63c of the plurality of solar cell panels 61a, 61b, 61c substantially perpendicular to the direction of sunlight irradiation. It is. Here, the panel rotating means (here, including the link rod 71 and the link driving unit 81) includes a plurality of solar battery panels 61a, 61b, 61c as panel support means (supporting part 41). And panel holding portions 51a, 51b, 51c) (here, part of the panel support means (to the support portion 41)) and pivoting around the panel pivot shafts 55a, 55b, 55c. It is something to be made.

In the present apparatus 11, the second straight line L2 is substantially vertical, thereby having panel support means (support part 41 and panel holding parts 51a, 51b, 51c) by support means rotating means (support part drive part 91). )), The height of the center of gravity of the panel support means (having the support portion 41 and the panel holding portions 51a, 51b, 51c) is substantially constant, and the support means rotation means (support portion). The panel support means (having the support part 41 and the panel holding parts 51a, 51b, 51c) by the drive part 91) can be smoothly rotated.
In the present apparatus 11, the first straight line L1 and the second straight line L2 are orthogonal to each other.
In the present apparatus 11, a reference straight line that is a plane that includes the second straight line L2 and is perpendicular to the first straight line L1 (the surface shown in FIGS. 1, 3, and 4) and that intersects the second straight line L2. (Indicated in FIG. 1, FIG. 3 and FIG. 4 as a dotted line LC.) At least two (here, 3) panel rotation shafts 55a, 55b, and 55c substantially intersect (FIG. 1, FIG. 3 and FIG. In FIG. 4, panel rotation shafts 55a, 55b, and 55c are substantially present on the reference straight line LC.) The light receiving surfaces 63a, 63b, and 63c face upward (in FIG. 1, the light receiving surfaces 63a, 63b, and 63c). Is vertical, but when the solar cell panels 61a, 61b, 61c rotate in the direction from FIG. 1 to FIG. 3, the light receiving surfaces 63a, 63b, 63c face upward.

In the present apparatus 11, the plurality of solar battery panels 61a, 61b, 61c are parallel to the light receiving surfaces 63a, 63b, 63c regardless of the pivot position about the panel pivot shafts 55a, 55b, 55c. A plurality of projection planes (an example of the projection plane includes a plane indicated by a dotted line P in FIGS. 1 and 3 and a plane including the installation plane 101 in FIG. 4). When all of the light receiving surfaces 63a, 63b, and 63c of the solar cell panels 61a, 61b, and 61c are orthographically projected, none of the projections overlap each other.
In the apparatus 11, the second straight line L2 and the reference straight line LC intersect at an angle of 40 to 50 degrees (the angle Q in FIGS. 1, 3 and 4 where Q = about 45 degrees). It is.
In addition, in the present apparatus 11, all of the light receiving surfaces 63a, 63b, 63c of the plurality of solar cell panels 61a, 61b, 61c can be in a substantially horizontal state (state shown in FIG. 4).
Moreover, in this apparatus 11, rotation of the panel support means (it has the support part 41 and panel holding | maintenance part 51a, 51b, 51c) by the support means rotation means (support part drive part 91), and panel rotation. The rotation of the plurality of solar cell panels 61a, 61b, 61c by means (having the link rod 71 and the link driving unit 81) is assumed to be the movement of the sun (here, the sun calculated by the computer according to the program). It is controlled according to (movement).

In this apparatus 11, the panel support means (support part) by the support means rotating means (support part drive part 91) can be achieved by orienting the light receiving surfaces 63a, 63b, 63c substantially perpendicular to the irradiation direction of the sunlight. 41 and panel holding portions 51a, 51b, 51c) and a plurality of solar cell panels 61a, 61b, 61c by panel rotation means (having link rod 71 and link driving portion 81). This is achieved only by both rotation (rotation about the axis C, rotation about the panel rotation shafts 55a, 55b, and 55c) (particularly, a panel that can be a structure having a large size and weight). Since the support means (having the support part 41 and the panel holding parts 51a, 51b, 51c) is rotated only by one axis), the structure is simple and the size and weight can be easily reduced. High degree Rukoto can. For example, it can be installed on a roof of a general house, a veranda, a roof of a commercial building, etc., and can generate power with high efficiency even in a town or in an expensive place. In addition, since the structure is simple, manufacturing and maintenance costs can be reduced.
Moreover, in this apparatus 11, since all the several solar cell panel 61a, 61b, 61c is rotated via the link stick | rod 71 by one link drive part 81, rotation of the some solar cell panel 61a, 61b, 61c is carried out. Since the structure of the mechanism is also simple, the structure of the apparatus 11 can be simplified and the size and weight can be easily reduced.
The rotating shafts 55a, 55b, 55c and the bearing portion 47 are movable parts by using high water resistance and high corrosion resistance, light weight and high hardness polymer bearings (resin bearings having self-lubricating properties). Maintenance and inspection work such as lubrication and inspection can be greatly reduced, and operating costs can be reduced.

DESCRIPTION OF SYMBOLS 11 This apparatus 21 Base part 23 Upper member 25 Lower member 27 Upper surface board 31 Base shaft part 31a Shaft main body part 31b Leg part 41 Support part 43 Support part main body part 45 Shaft insertion hole 47 Bearing part 49 Wheel part 51a, 51b, 51c Panel holding portion 53a, 53b, 53c Support plate portion 55a, 55b, 55c Rotating shaft 57a, 57b, 57c Support plate portion supporting portion 59a, 59b, 59c Rotating shaft 61a, 61b, 61c Solar cell panel 63a, 63b, 63c Light-receiving surface 71 Link rod 81 Link drive unit 82 Rotating shaft 83 Telescopic body unit 85 Electric motor 87 Rotating shaft 91 Support unit driving unit 93 Electric motor 95 Driving gear member 97 Driven gear member 101 Installation surface

Claims (8)

A solar power generation device that is supported by a fixed object and generates power by receiving sunlight,
A plurality of solar cell panels having a light receiving surface substantially along a plane;
Panel support means for supporting each of the plurality of solar battery panels so that the light receiving surfaces are substantially parallel to each other around a panel rotation axis which is a rotation axis substantially parallel to the first straight line;
Rotation support means for supporting the panel support means with respect to a fixed object so as to be rotatable around a support means rotation axis that is a rotation axis substantially parallel to a second straight line intersecting the first straight line;
Panel rotation means for rotating a plurality of solar battery panels in conjunction with a panel rotation axis;
Supporting means rotating means for rotating the panel supporting means about the supporting means rotating shaft,
Only the rotation of the panel support means by the support means rotation means and the rotation of the plurality of solar cell panels by the panel rotation means follow the movement of the sun, and A solar power generation device that directs the light receiving surface substantially perpendicular to the direction of sunlight irradiation.     The solar power generation device according to claim 1, wherein the second straight line is substantially vertical.     The solar power generation device according to claim 1 or 2, wherein the first straight line and the second straight line are orthogonal to each other. At least two or more panel rotation axes substantially intersect a reference straight line that is a straight line that includes the second straight line and that is perpendicular to the first straight line.
The solar power generation device according to claim 3, wherein the light receiving surface faces upward.     Regardless of the rotation position of the plurality of solar cell panels around the panel rotation axis, all of the light receiving surfaces of the plurality of solar cell panels are orthographically projected onto a projection surface that is parallel to the light receiving surface. The solar power generation device according to claim 4, wherein none of the projections overlap.     The solar power generation device according to claim 5, wherein the second straight line and the reference straight line intersect at an angle of 40 to 50 degrees.     The solar power generation device of any one of Claims 1 thru | or 6 which can take the state from which all the light-receiving surfaces of a several solar cell panel become substantially horizontal.     The rotation of the panel support means by the support means rotation means and the rotation of the plurality of solar cell panels by the panel rotation means are controlled in accordance with the assumed movement of the sun. The solar power generation device of any one of thru | or 7.

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