JP2016208779A - Solar power plant - Google Patents

Abstract

Provided is a solar power generation device that improves solar power generation efficiency by causing a solar cell panel to follow the sun with a simple structure. A solar cell comprising a plurality of strip-like solar cell panels 4 and causing the solar cell panel 4 to follow the diurnal motion of the sun so that sunlight enters the light receiving surface 4a of the solar cell panel 4 in a substantially vertical shape. A photovoltaic power generation device, wherein a plurality of panel mounting swing frames 5 to which a plurality of solar cell panels 4 are attached are arranged in parallel, so that the solar cell panels 4 can be adapted to seasonal solar orbit variations. An angle adjustment mechanism 3 for adjusting the direction of the light receiving surface 4a, and a rotation drive mechanism 6 that swings the swing frame 5 in accordance with the diurnal motion of the sun and rotates the plurality of solar battery panels 4. The rotation drive mechanism 6 includes a drive shaft that is rotated by a motor, a plurality of worm gear portions attached to the drive shaft, and a plurality of worm wheel portions that mesh with the worm gear portion and swing the swing frame 5. Thick It is configured to mechanically interlocked the cell panel 4. [Selection] Figure 1

Description

  The present invention relates to a solar power generation device.

  Conventionally, in order to improve the power generation efficiency of the solar power generation device, the solar cell panel is made to follow the diurnal movement of the sun on the orbit so that the light receiving surface of the solar cell panel receives sunlight substantially vertically. A follow-up type solar power generation device has been proposed (see Patent Document 1).

JP 2011-91073 A

  However, the solar power generation device described in Patent Document 1 includes a sensor that detects the position of the sun, and controls the operation of the solar cell panel according to the position of the sun on the orbit detected by the sensor. However, there is a disadvantage that the cost becomes higher.

  Then, an object of this invention is to provide the solar power generation device which makes a solar cell panel follow the sun with a simple structure and improves solar power generation efficiency.

  A solar power generation device according to the present invention includes a plurality of strip-like piece solar cell panels, and the solar cell panel moves the solar diurnal motion so that sunlight enters the light receiving surface of the solar cell panel substantially vertically. A plurality of panel-mounting oscillating frames to which a plurality of the solar cell panels are attached are arranged in parallel so that the solar An angle adjustment mechanism for adjusting the orientation of the light receiving surface of the battery panel, and a rotation drive mechanism for rotating the plurality of solar cell panels by swinging the swing frame according to the diurnal motion of the sun, The rotational drive mechanism includes a drive shaft that is rotationally driven by a motor, a plurality of worm gear portions attached to the drive shaft, and a plurality of worm wheels that mesh with the worm gear portion and swing the swing frame. And by those which are configured to mechanically interlocked the plurality of solar cell panels.

In addition, the solar cell panel has an east direction and a west direction as viewed in a plane in accordance with the sun adjustment position on the solar orbit in summer by the angle adjustment mechanism. It is configured to be displaced over an angular range exceeding 180 degrees.
Further, a plurality of the swinging frames are arranged in parallel on the gantry to form a solar power generation unit, the plurality of the solar power generation units are arranged side by side, and the other end of the one drive shaft in the longitudinal direction. The drive shafts are connected to each other in the longitudinal direction through a universal joint, and the plurality of swing frames are swung by rotationally driving the drive shaft integrally formed by the motor. It is.
The panel mounting swing frame is swingably attached by a plurality of support bars having different lengths.

  According to the solar power generation device of the present invention, the structure is simple and can be manufactured at low cost, and a plurality of solar battery panels are mechanically interlocked by the worm gear part and the worm wheel part to follow the sun. Photovoltaic power generation efficiency can be improved. A plurality of oscillating frames with solar panels attached can be driven by a common motor. The solar battery panel can be controlled very finely by the motor without play in the meshing of the worm gear part and the worm wheel part. A high gear ratio can be realized in a small space by the worm gear part and the worm wheel part, and a high torque can be transmitted to the solar cell panel. The angle adjustment mechanism can easily adjust the orientation of the light-receiving surface of the solar cell panel in response to the seasonal orbital change of the sun. The angle adjustment mechanism can easily cope with solar orbital changes not only in Japan but also at any latitude on the earth, and can be used overseas.

It is the side view which showed one Embodiment of this invention. It is a principal part enlarged side view shown with a partial cross section. It is the top view which showed the solar power generation device of this invention. It is a principal part enlarged front view shown with a partial cross section. It is a simplified perspective view which shows the solar orbit of the Equinox day and the Equinox day. It is the front view which showed the solar power generation device of this invention. It is a simplified perspective view showing a solar orbit in winter. It is the side view which showed the use condition in winter of the solar power generation device of this invention. It is a simplified perspective view which shows the solar orbit of summer. It is the side view which showed the use condition of the summer of the solar power generation device of this invention. It is a simplified top view explaining the displacement of the solar cell panel in summer. It is a perspective view explaining the mode of rotation of a solar cell panel. It is a perspective view explaining the mode of rotation of a solar cell panel. It is a top view which shows a some photovoltaic power generation unit.

Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments.
The present invention relates to a solar tracking (tracking) solar power generation apparatus that causes a solar cell panel to follow the diurnal motion of the sun so that sunlight enters the light receiving surface of the solar cell panel in a substantially vertical shape.
As shown in FIGS. 1 and 3, the solar power generation device of the present invention includes a plurality of strip-like piece solar cell panels 4, and the light receiving surface 4 a of the solar cell panel 4 corresponding to the change in the solar orbit depending on the season. An angle adjustment mechanism 3 for adjusting the direction of the solar cell, and a rotation drive mechanism 6 that rotates the plurality of solar cell panels 4 in accordance with the diurnal motion of the sun.

The solar cell panel 4 is attached to the upper surface 5a of a swingable panel mounting swing frame 5. A plurality of oscillating frames 5 are arranged in parallel with the gantry 8, and the gantry 8 and the plurality of oscillating frames 5 form an integrally connected photovoltaic power generation unit 10.
As shown in FIG. 1, the panel mounting swing frame 5 is formed in a triangular shape in side view, and the first frame member 1 to which the three solar cell panels 4 are fixed in a longitudinal direction (longitudinal direction); A second frame member 2 that is pivotally attached to the first frame member 1 by a hinge portion 7 and supported by a gantry 8 by a plurality of support rods 21, 22, 23, and the first frame member 1 and the second frame member 2. A length-adjustable adjustment frame member 9 connected at the opposite end of the hinge portion 7, and an angle α formed by the hinge portion 7 between the first frame member 1 and the second frame member 2 is The length of the adjustment frame member 9 can be freely changed by adjusting the length. That is, the direction of the light receiving surface 4 a of the solar cell panel 4 is changed by adjusting the length of the adjustment frame member 9 of the swing frame 5. The inclination angle θ shown in FIG. 1 shows the angle formed by the light receiving surface 4a with respect to the horizontal plane when the swinging frame 5 is in the vertical standing state. The length adjustment of the adjustment frame member 9 of the swing frame 5 can be manually operated.

As shown in FIGS. 2 to 4, the rotation drive mechanism 6 is attached to the mount 8 at a predetermined pitch, a motor 11 attached to the gantry 8, a drive shaft 12 connected to the motor 11 to be driven to rotate, and the drive shaft 12. A plurality of worm gear portions 13 and a plurality of worm wheel portions 14 that mesh with the worm gear portions 13 are provided.
The motor 11 is a stepping motor that rotates by a constant small angle by a pulse current, and is electrically controlled by the control unit 25 so that a pulse current that drives the motor 11 in accordance with the diurnal motion of the sun is input. Yes. The pulse current refers to a current having a very short duration so as to pulsate. The worm wheel portion 14 is fixed to the lower end of one support rod 22 among the plurality of support rods 21, 22 and 23 that support the swing frame 5. By the worm gear portion 13 and the worm wheel portion 14, the rotational driving force of the drive shaft 12 is converted into a force that causes the swing frame 5 to swing. Accordingly, the rotational driving force is transmitted to the plurality of worm wheel portions 14 by the plurality of worm gear portions 13 that rotate around the drive shaft 12, the plurality of swing frames 5 swing simultaneously, and the plurality of solar cell panels 4 It is configured to rotate mechanically (linked). Since the motor 11 is a stepping motor and the rotational driving force of the drive shaft 12 is reliably transmitted to the swing frame 5 by the engagement of the worm gear portion 13 and the worm wheel portion 14, the light receiving surface 4a is always directed to the sun. In addition, the rotation of the solar cell panel 4 can be controlled very finely. The worm wheel portion 14 is pivotally attached to a gear support portion 30 fixed to the gantry 8 so as to be rotatable about the swing axis L ₀ , and the worm gear portion 13 is pivotally supported by the gear support portion 30. The meshing state of the portion 14 and the worm gear portion 13 is maintained. In addition, it is possible to change the joining angle of the worm gear part 13 and the worm wheel part 14, and the angle of the support rod 22 can be changed easily.

As shown in FIG. 1, the panel mounting swing frame 5 is swingably attached to the gantry 8 by a plurality of support bars 21, 22, and 23. The first support bar 21, the second support bar 22, and the third support bar 23 are sequentially connected to the second frame member 2 of the swing frame 5 from the north side. The first support bar 21, the second support bar 22, and the third support bar 23 have different length dimensions L, the first support bar 21 is the shortest, and the second support bar 22 is shorter than the first support bar 21. It is set longer and shorter than the third support rod 23. The second support bar 22 is secured the worm wheel portion 14 to the lower end 22a, a swingable pivot axis L ₀ around the upper end portion 22b is pivotally connected to the second frame member 2 of suspended protrusion 2a ing. The connection point between the lower end of the first support bar 21 and the lower end of the third support bar 23 and the gantry 8 can freely swing freely in the left-right and front-rear directions using a ball joint, and the upper end of the first support bar 21 The connection point between the upper end of the part / third support rod 23 and the second frame member 2 of the swing frame 5 is also formed so as to be freely swingable in the left-right and front-rear directions. The connection point between the lower end of the first support bar 21 and the lower end of the third support bar 23 and the gantry 8 is not disposed on the extension line of the swing axis L ₀ of the worm wheel unit 14.

As shown in FIG. 5, Vernal Equinox Day, and the Autumnal Equinox, sun, upstream from due east (sunrise position E _0), sinking due west (sunset position W _0).
In FIG. 1, the solar cell panel 4 has an inclination angle θ of the light receiving surface 4 a of θ = 90 corresponding to the south-middle altitude Φ ₀ on the solar orbit of the spring equinox or autumn equinox by the angle adjusting mechanism 3. relationship of ° - [Phi] ₀ is set to true.
As shown in FIG. 6, the solar cell panel 4 is rotated in the east-west direction (left-right direction) as indicated by an arrow M in the drawing by the rotation driving mechanism 6 in accordance with the diurnal motion of the sun. Solar panel 4, corresponding to the sunrise position E ₀ · sunset position W ₀ of the day or Autumnal Equinox Equinox orientation of the light receiving surface 4a is about from due east as viewed in plan of the due west 180 It is configured to be displaced over an angular range of degrees.

As shown in FIG. 7, during the period after the autumnal equinox day and before the equinox day (hereinafter referred to as winter), the sunrise position E ₁ and the sunset position W ₁ on the solar orbit are true east and true. Moving from the west to the south, the apparent travel distance of the sun is shortened. That is, the day is shorter than the night. Note that the south-middle altitude Φ ₁ on the solar orbit in winter is smaller than the south-middle altitude Φ ₀ on the spring equinox day or the autumn equinox day.
As shown in FIG. 8, in the solar cell panel 4, the inclination angle θ of the light receiving surface 4 a is set larger than the spring equinox day or the autumn equinox day by the angle adjustment mechanism 3 in correspondence with the solar orbit in winter. . Solar panel 4, corresponding to the sunrise position E ₁ · Sunset position W ₁ of the winter, the orientation of the light receiving surface 4a is smaller angular range than the 180 degrees between due east as viewed in plan of the due west It is comprised so that it may displace over.

As shown in FIG. 9, during the period after the Equinox day and before the Equinox day (hereinafter referred to as “summer season”), the sunrise position E ₂ and the sunset position W ₂ on the solar orbit are true east and true. Moving north from west, the apparent travel distance of the sun will be longer. In other words, the day becomes longer. In addition, the south-middle altitude Φ ₂ on the solar orbit in summer is larger than the south-middle altitude Φ ₀ on an equinox day or an autumn day.
As shown in FIG. 10, in the solar cell panel 4, the angle adjustment mechanism 3 sets the inclination angle θ of the light receiving surface 4a to be smaller than that of the spring equinox day or the autumn equinox day, corresponding to the solar orbit in summer. .
In FIG. 11, the solar cell panel 4 corresponds to the summer sunrise position E ₂ and sunset position W ₂ , and the direction of the light receiving surface 4 a is 180 degrees beyond the east and west directions when viewed in plan. It is configured to displace over a larger angular range.

The state of rotation of the solar cell panel 4 in the summer will be described. As shown in FIG. 12, when the swing frame 5 is in a vertically upright state, the light receiving surface 4a of the solar cell panel 4 is tilted southward. It faces almost upward. The lower end 23a of the lower end portion 21a and the third support rod 23 of the first support rod 21 is not an extension of the oscillation axis _{L 0} of the second support bar 22, the lower end portion 21a of the first support rod 21 , is disposed at a position of the pivot axis L ₀ from the solar cell panel 4 close (inside), a lower end portion 23a of the third support bar 23, away from the solar cell panel 4 than the oscillation axis L ₀ (outer) It is arranged at the position.

  As shown in FIG. 13, when the second support bar 22 is swung by 90 ° and the solar cell panel 4 is rotated from the upward direction to the horizontal direction, the third support bar 23 is swung together with the solar cell panel 4. Since the third support bar 23 is connected to the swing frame 5 and maintains a certain distance from the second support bar 22, the third support bar 23 swings at an angle of less than 90 ° while tilting toward the second support bar 22 (north side). . The first support bar 21 also swings with the solar cell panel 4 when the second support bar 22 is swung by 90 °. In order to maintain a certain distance from the second support rod 22, the first support rod 21 swings at an angle exceeding 90 ° while tilting to the second support rod 22 side (south side). That is, when the solar cell panel 4 has a difference in the rotation radius due to the difference in length between the first support bar 21, the second support bar 22, and the third support bar 23, the solar cell panel 4 receives light when rotated 90 degrees and turned in the horizontal direction. The surface 4a is inclined northward. In addition, since the fulcrum points of the first support rod 21, the second support rod 22, and the third support rod 23 are not arranged on the same straight line, the first support rod 21 and the third support rod 23 are moved in accordance with the swing. 2 Inclining to the support rod 22 side, the light receiving surface 4a of the solar cell panel 4 can be inclined to the north by a predetermined angle.

As shown in FIG. 14, a plurality of photovoltaic power generation units 10, 10 in which a plurality of swing frames 5 are arranged side by side on the gantry 8 are arranged side by side, and the other end of the drive shaft 12 in the longitudinal direction 12 a The drive shaft 12 is connected to a longitudinal end portion 12a via a universal joint 24, and the drive shafts 12 and 12 are integrally driven by a motor 11 to rotate the plurality of swing frames 5. It is configured to swing.
That is, when a plurality of photovoltaic power generation units 10 and 10 are used side by side, the motor 11 is shared, and the rotational driving force of the (one) motor 11 is driven via the universal joint 24 and the drive shafts 12 and 12. Communicate with each other. By connecting the drive shafts 12 and 12 with the universal joint 24, the drive shafts 12 and 12 can be installed corresponding to the undulation of the ground, and the arrangement of the photovoltaic power generation units 10 and 10 can be freely changed. Moreover, increase / decrease in the number of the photovoltaic power generation units 10 and 10 can be performed easily. Therefore, the solar power generation device according to the present invention can be installed not only on an idle land but also on an upper part of a farmland or a parking lot, and can effectively use a dead space.

In the present invention, the design can be changed. For example, the number of swing frames 5 arranged in parallel to the gantry 8 and the number of solar battery panels 4 to which the swing frames 5 are attached can be freely increased or decreased. Can do.
Further, a plurality of swinging frames 5 to which a plurality of solar cell panels 4 are attached are arranged in parallel on a gantry 8 to form a connected and integrated solar power generation unit 10, thereby making the plurality of solar cell panels into a large panel. Compared to conventional solar power generation devices that are fixed, it is less susceptible to wind and snow.

  As described above, the photovoltaic power generation apparatus according to the present invention includes a plurality of strip plate-like solar battery panels 4, and the solar battery panel so that sunlight enters the light receiving surface 4 a of the solar battery panel 4 substantially vertically. 4 is a solar power generation device that follows the diurnal motion of the sun, and a plurality of panel mounting swing frames 5 to which a plurality of solar battery panels 4 are attached are arranged in parallel, An angle adjusting mechanism 3 for adjusting the orientation of the light receiving surface 4a of the solar cell panel 4 in response to the orbital change, and a plurality of solar cell panels 4 by oscillating the oscillating frame 5 according to the diurnal motion of the sun. A rotation drive mechanism 6 that rotates. The rotation drive mechanism 6 is engaged with the worm gear unit 13 and is oscillated by meshing with the drive shaft 12 that is rotationally driven by the motor 11, the plurality of worm gear units 13 that are attached to the drive shaft 12, and the worm gear unit 13. Shake the moving frame 5 Since the plurality of solar battery panels 4 are mechanically interlocked and connected by the plurality of worm wheel portions 14 to be operated, the structure is simple and can be manufactured at low cost, and the plurality of solar battery panels 4 are connected to the worm gear. It is possible to improve the photovoltaic power generation efficiency by mechanically interlocking and connecting the part 13 and the worm wheel part 14 to follow the sun. A plurality of swing frames 5 to which the solar cell panel 4 is attached can be driven by a common motor. Without any play in meshing between the worm gear portion 13 and the worm wheel portion 14, very fine control is possible by the motor 11 (stepping motor), and the solar cell panel 4 can reliably follow the sun. A high gear ratio can be realized in a small space by the worm gear portion 13 and the worm wheel portion 14, and a high torque can be transmitted to the solar cell panel 4. The angle adjustment mechanism 3 can easily adjust the direction of the light receiving surface 4a of the solar cell panel 4 in response to seasonal orbital changes of the sun. With the angle adjustment mechanism 3, not only in Japan but also at any latitude on the earth, it can easily cope with solar orbital changes and can be used overseas.

In addition, the solar cell panel 4 has an angle adjustment mechanism 3 that corresponds to the sunrise position E ₂ and the sunset position W ₂ on the solar orbit in the summer, and the direction of the light receiving surface 4a is the east direction as viewed in plan. Therefore, the solar cell panel 4 can be operated with the light receiving surface 4a facing the sun in accordance with the summer sun orbit.

  Further, a plurality of swing frames 5 are arranged in parallel on the gantry 8 to form a solar power generation unit 10, the plurality of solar power generation units 10, 10 are arranged side by side, and the longitudinal direction of one drive shaft 12 The end portion 12a is connected to the longitudinal end portion 12a of the other drive shaft 12 through a universal joint 24, and the motor 11 rotates the connected integral drive shafts 12 and 12 to drive a plurality of swing frames. The number of photovoltaic power generation units 10 can be changed by connecting the drive shafts 12 and 12. A plurality of photovoltaic power generation units 10, 10 can be installed according to the undulations of the ground. In addition to installing on idle land, it can be installed on top of farmland, parking lots, etc., and dead space can be used effectively.

  Further, since the panel mounting swing frame 5 is swingably mounted by a plurality of support rods 21, 22, and 23 having different lengths L, the solar panel 4 can be placed in an angular range of 180 degrees or more. The solar cell panel 4 can be operated so that the light receiving surface 4a faces the sun in accordance with the summer solar orbit.

DESCRIPTION OF SYMBOLS 3 Angle adjustment mechanism 4 Solar cell panel 4a Light-receiving surface 5 Oscillating frame 6 Rotation drive mechanism 8 Base 10 Solar power generation unit 11 Motor 12 Drive shaft 12a Longitudinal direction end part 13 Worm gear part 14 Warm wheel part 21 Support rod 22 Support rod 23 Support rod 24 Universal joint L Length E ₂ Sunrise position on the solar orbit in summer ₂ W Sunset position on the solar orbit in summer ₂

Claims (4)

The solar cell panel (4) is provided with a plurality of strip plate-like solar cell panels (4), and the solar cell panel (4) is placed on a solar day so that the sunlight enters the light receiving surface (4a) of the solar cell panel (4) in a substantially vertical shape. A solar power generation device that follows a circumferential motion,
A plurality of panel mounting swing frames (5) to which a plurality of the solar cell panels (4) are attached are arranged in parallel,
An angle adjusting mechanism (3) for adjusting the direction of the light receiving surface (4a) of the solar cell panel (4) corresponding to the seasonal orbital change of the sun, and the swing frame according to the diurnal motion of the sun A rotational drive mechanism (6) that swings (5) and rotates the plurality of solar cell panels (4),
The rotational drive mechanism (6) includes a drive shaft (12) rotated by a motor (11), a plurality of worm gear portions (13) attached to the drive shaft (12), and the worm gear portion (13). A plurality of solar cell panels (4) are mechanically interlocked and connected to each other by a plurality of worm wheel portions (14) that mesh with each other to swing the swing frame (5). Solar power generator. The solar cell panel (4) has the light-receiving surface (4a) corresponding to the sunrise position (E ₂ ) and sunset position (W ₂ ) on the solar orbit in summer by the angle adjustment mechanism (3). The solar power generation device according to claim 1, wherein the direction of is displaced over an angular range larger than 180 degrees beyond the east direction and the west direction when seen in a plan view. A plurality of the swing frames (5) are juxtaposed on the gantry (8) to form a photovoltaic power generation unit (10),
A plurality of the photovoltaic power generation units (10) and (10) are arranged side by side, and a longitudinal end (12a) of one drive shaft (12) is connected to a longitudinal end ( 12a) are connected via a universal joint (24), and the drive shafts (12) and (12) are integrally driven by the motor (11) to rotate the plurality of swing frames (5). The photovoltaic power generation apparatus according to claim 1 or 2, wherein the photovoltaic power generation apparatus is configured to swing.   The panel mounting swing frame (5) is swingably attached by a plurality of support bars (21) (22) (23) having different length dimensions (L). 3. The solar power generation device according to 3.

Images