JP6069472B1 - Solar power plant - Google Patents

Abstract

Provided is a solar power generation device capable of increasing power generation efficiency per panel installation area and having a good cost-effectiveness ratio. A plurality of main panels P are rotatably supported with respect to a main frame, and a drive mechanism for controlling an inclination angle of the main panel P is provided, and the main panel P is rotated while being driven by the driving force of the drive mechanism. It is assumed that the light receiving surface of the panel P is a solar power generation device that maintains an inclination angle that is almost directly opposite to sunlight. The sub-panel sP is disposed below the main panel P at a position corresponding to the interval between the main panels P formed when the plurality of main panels P are flush with each other. . [Selection] Figure 1

Description

  The present invention relates to a solar power generation device that uses solar energy.

In order to efficiently use a photovoltaic power generation panel that converts light energy into electric power, it is conventionally known to track sunlight and change the tilt angle of the panel.
As this type, an invention according to Japanese Patent Application Laid-Open No. 2011-108703 described in Patent Document 1 has been conventionally known. FIG. 8 shows a conventional basic configuration for generating electricity while tracking this sunlight.
FIG. 8 is a schematic diagram showing the arrangement of a plurality of solar power generation main panels P.
This conventional apparatus tracks the movement of the sun in the day and makes each main panel P face the sun as much as possible so that the power generation efficiency of each main panel P is maximized.
Each of these main panels P is rotatably supported via a support shaft 1 with respect to a frame (not shown).

Such main panels P are all arranged at equal intervals, with L being the interval between the support shafts 1 of adjacent main panels P. Moreover, when the inclination angle θ of each main panel P is maximized, the shadow of the specific main panel P is behind the specific main panel P in the incident direction of sunlight, as shown by the dotted line in FIG. In FIG. 2, the adjacent main panel P is not covered.
The reason why the inclination angle θ of the main panel P is maximized is to increase the power generation efficiency by making the main panel P face the sun even when the sun is at the lowest position.
When the position of the sun rises, as shown in FIG. 8 (b), the plurality of main panels P are kept substantially flush with each other so as to face the sun so that the solar energy can be utilized to the maximum. Yes.

JP 2011-108703 A JP 2011-0666030 A

  In the conventional apparatus described above, the inclination angle θ of the main panel P is kept at a maximum in order to increase the power generation efficiency when the position of the sun is low in one day. However, as the tilt angle θ is increased, the shadow of the specific main panel is greatly extended, and the shadow is applied to the main panel adjacent to the rear in the sunlight incident direction. If there is a shadow on the adjacent main panel, the power generation efficiency will decrease accordingly, and the meaning of maximizing the tilt angle of the main panel will also be lost.

From such a point of view, a space is maintained between the main panels so that the main panels adjacent to the rear of the incident direction of sunlight are not shaded.
However, if a space is maintained between the main panels, a gap S is formed between the main panels when the tilt angle is smaller than the maximum tilt angle. In particular, when the main panels are flush with each other, that is, in the time zone in which the position of the sun is the highest and the luminance with respect to the main panel is the highest, as shown in FIG. The power generation efficiency is remarkably deteriorated by the gap S.

  As described above, when trying to increase the power generation efficiency when the luminance with respect to the main panel is low, the conventional apparatus increases the loss when the luminance is the highest, and conversely increases the power generation efficiency when the luminance with respect to the main panel is high. Attempts to do so have a trade-off problem that loss increases when brightness is low.

  An object of the present invention is to provide a photovoltaic power generation apparatus that can increase the power generation efficiency per panel installation area and increase the cost-effectiveness ratio regardless of the brightness of the main panel.

In the present invention, a plurality of main panels are rotatably supported with respect to the main frame, and a drive mechanism for the main panel that controls the tilt angle of the main panel is provided. In addition, the tilt angle of the light receiving surface of the main panel facing the sunlight is maintained while being rotated by the driving force of the drive mechanism for the main panel, and when the tilt angle is maximum, the shadow of each main panel is It is assumed that the solar power generation apparatus is provided with a gap that does not cover the main panel adjacent to the rear of the main panel in the incident direction of sunlight.
A sub-panel is disposed below the main panel at a position corresponding to a gap between the main panels formed when the plurality of main panels are flush with each other, and is incident on the gap. sunlight is Ru is received by the sub-panel.
In addition, the rotation of the main panel in this invention may be anything as long as the light receiving surface of the main panel rotates around the axis and tracks sunlight. The axis may be a virtual axis or the center of an actual axis.

In the first invention, a sub-frame is provided below the main frame, and one or a plurality of the sub-panels are rotatably provided in the sub-frame. A drive mechanism for the main panel for rotating the sub panel or a drive mechanism for the sub panel different from the drive mechanism is provided, and the drive mechanism for the main panel or the drive mechanism for the sub panel is provided. substantially directly opposite inclination to the light receiving surface is sunlight of the sub-panel while being rotated by the driving force is shall be maintained.

In the second invention, a swing arm is swingably provided on the main frame, and a crank rod for swinging the swing arm is connected to the swing arm. The sub-panel is provided below the pivot point of the swing rod and the swing arm, and the tilt angle of the sub-panel is controlled according to the movement of the crank rod in the axial direction. I try to do it.

In the third aspect of the invention, a common drive mechanism is provided for the main panel and the sub panel. Then, with the driving force of this common driving mechanism, the inclination angle of the main panel and the sub panel is controlled in synchronization.

According to the first invention, when the position of the sun is low and the luminance with respect to the main panel is small, the tilt angle of the main panel is kept at the maximum and the solar panel faces the sun, so that the power generation efficiency can be maintained high.
When each main panel starts moving by tracking sunlight, sunlight incident from the gap between the adjacent panels can be received by the sub panel, so that the power generation efficiency per installation area can be improved.
In addition, when each main panel is flush, it corresponds to the time zone with the highest power generation efficiency, and sunlight incident on the gap generated in that time zone can also be received by the sub panel, so the installation area The amount of power generation per unit can be further increased.

And since a subpanel also opposes sunlight, the power generation efficiency per installation area of a panel can be enlarged further.

According to the second aspect of the invention, the sub-panel can track the sunlight while swinging, so that it can accurately face the light entering from the gap.

According to the third invention, since the drive mechanism can be made one, the cost merit is increased, and it is also easy to synchronize the main panel and the sub panel.

It is the perspective view which looked at the whole reference example of this invention from the back side of the panel. It is a side view of the movable part of the reference example of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic diagram which showed the panel arrangement | positioning of the reference example of this invention, Comprising : (a) is a figure of the state which made the main panel flush, (b) is a figure of the state in which the main panel became the maximum inclination. (C) is a figure of the state which the main panel tracked sunlight from (a) and reached a predetermined angle position. It is a side view of the movable part of 1st Embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic diagram which showed the panel arrangement | positioning of 1st Embodiment of this invention, Comprising: (a) is a figure of the state which became the main panel flush, (b) is the state in which the main panel became the maximum inclination. (C) is a figure of the state which the main panel tracked sunlight from (a) and reached the predetermined angle position. It is a side view of the movable part of 2nd Embodiment of this invention. It is the schematic diagram which showed the panel arrangement | positioning of 2nd Embodiment of this invention, Comprising: (a) is a figure of the state which made the main panel flush, (b) is the state of the state which the main panel became the maximum inclination. (C) is a figure of the state which the main panel tracked sunlight from (a) and reached the predetermined angle position. It is the schematic diagram which showed the panel arrangement | positioning of the conventional apparatus, Comprising: (a) is a figure of a state when a panel is the maximum inclination | tilt angle, (b) is a figure of the state in which the panel became flush.

In the reference example shown in FIGS. 1 to 3, the leg members 6 and 6 are erected on both sides thereof, and the leg members 6 and 6 are rotatable about the shaft 7 with respect to the leg members 6 and 6. The connecting piece G is provided. A main frame F1 is fixed to the upper part of the connecting piece G, and a subframe F2 is fixed to the lower part thereof.
Thus, the main frame F1 and the subframe F2 fixed above and below the connecting piece G are integrally formed around the shaft 7 while being kept parallel to each other by the driving force of a rotation control mechanism (not shown). Rotate.

The main frame F1 fixed to the connecting piece G as described above includes a pair of long side frames 2 and 2 and short side frames 3 and 3 spanned between both ends of the pair of long side frames 2 and 2. The plane is rectangular.
A plurality of main panels P are bridged between the long side frames 2 and 2, and the main panels P are supported by the long side frames 2 and 2 so that the support shafts 10 and 10 can rotate. ing.
In addition, when the inclination angle θ is maximized, the plurality of main panels P are adjacent to the shadow of the specific main panel P in the sunlight incident direction behind the specific main panel P as in the conventional case. The main panel is not covered.

Further, as shown in FIGS. 1 and 2, a main panel swing arm 8 having an inverted triangle is fixed to one side surface of the main panel P, that is, one side surface adjacent to one long side frame 2. At the same time, a connecting shaft 11 is provided at the lower end of the main panel swing arm 8, and the connecting shaft 11 is rotatably attached to the crank rod 12. Further, all the main panel swing arms 8 are connected by the crank rod 12 so as to swing integrally.
The one long side frame 2 is connected to one end of a drive mechanism 13 that can be expanded and contracted, and the other end is connected to the crank rod 12.

Therefore, when the drive mechanism 13 is expanded and contracted, the crank rod 12 moves in the axial direction, and the main panel swing arm 8 swings along with the movement. If the main panel swing arm 8 swings in this way, the main panel P rotates around the support shaft 10 along with it, and the tilt angle θ in the direction of facing the sun can be controlled.
The drive mechanism 13 incorporates a reduction mechanism (not shown) so that the position can be maintained while maintaining the load at the rotation position of the main panel P.

On the other hand, the sub-frame F2 parallel to the main frame F1 has a plane formed by a pair of long side frames 4 and 4 and short side frames 5 and 5 spanned between both ends of the pair of long side frames 4 and 4. It is rectangular.
The sub panel sP is spanned between the long side frames 4 and 4 and at a position corresponding to the gap between the main panels P. The sub panel sP is fixed by a fixing member 14 such as a bolt in the same plane as the surface surrounded by the sub frame F2. In other words, the main panel P provided on the main frame F1 is rotated about the support shaft 10 and the tilt angle θ is controlled. However, the sub panel sP provided on the subframe F2 is moved to the subframe F2. On the other hand, the fixed state is maintained, and the tilt angle θ is not controlled.

However, each of the main panel P and the sub panel sP rotates around the shaft 7 together with the main frame F1 and the subframe F2.
In other words, in this reference example , the main panel P and the sub panel sP rotate around the so-called seasonal axis (axis 7) together with the main frame F1 and the subframe F2, and the position of the sun that changes according to the season. It is trying to correspond to.
Further, the main panel P rotates about a so-called day axis (support axis 10) so that the inclination angle θ for facing the sun during the day can be controlled.

  1 to 3A, the inclination angle θ of the main panel P is kept zero with respect to the surface surrounded by the main frame F1, and the light receiving surfaces of all the main panels P are flush with each other. Thus, when the main panels P are in a flush state, the gap S between the adjacent main panels P is maximized. Therefore, the irradiation area of the sunlight radiated from between the gaps S to the sub panel sP is also maximized.

  When the drive mechanism 13 is contracted from the above state, the crank rod 12 is moved in the y direction, which is the right direction in FIG. 2, and the main panel swing arm 8 is rotated counterclockwise, and the main panel P is moved counterclockwise. Turn clockwise. Thus, if the main panel P rotates counterclockwise, the inclination angle θ with the light receiving surface directed in the x direction is maintained.

When the drive mechanism 13 is extended, the crank rod 12 moves in the x direction, which is the left direction in FIG. 2, to rotate the main panel swing arm 8 in the clockwise direction and to rotate the main panel P in the clockwise direction. Move. Thus, when the main panel P is rotated in the clockwise direction, the tilt angle θ with the light receiving surface directed in the y direction is maintained.
As described above, the main panel P is rotated clockwise or counterclockwise, whereby the inclination angle θ of the main panel P is controlled.
The expansion / contraction operation of the drive mechanism 13 may be automatically controlled by a controller (not shown) or may be manually controlled.

Note that how many times the maximum tilt angle is set is determined as follows. For example, if the main panel P is close to 90 degrees, a strong wind will hit the main panel P, which is disadvantageous in terms of strength. Therefore, first, the maximum allowable inclination angle θ is determined based on the weather conditions of the installation location.
Once the maximum allowable tilt angle θ is determined as described above, next, assuming that the position of the sun is at a lower position in the power generation possible time zone, the sunlight at the lower position is relative to the main panel P. Determine the orthogonal angular position.

The maximum tilt angle is determined on the assumption that the sun is at the lowest position within the range determined from the viewpoint of strength and in the power generation possible time zone.
Therefore, the maximum inclination angle is relatively determined according to the strength of the device and the area where the device is installed.
The distance between the main frame F1 and the subframe F2 is such that the main panel P does not intersect the fixed sub panel sP when the main panel P is at the maximum inclination angle.

In this reference example , the movement is performed using the drive mechanism 13 that uses electricity as power, but the drive mechanism 13 can be used even by a method such as hydraulic pressure. Moreover, if the rotation movement of the main panel P is a mechanism which can control rotation of each main panel P, the control method will not ask | require. For example, various mechanisms can be used, such as a device that performs rotation control with a chain or wire, or a device that controls rotation with a rack and pinion.

In the reference example , description is made using four main panels P and three sub panels sP corresponding to the main panels P. However, the number of the main panels P may be plural. As the panel sP, the number obtained by subtracting 1 from the number of the main panels P can be used.
Furthermore, in this reference example , the main panel P and the sub panel sP all use the same shape panel, but the main panel P and the sub panel sP may not have the same shape.

Next, the operation of this reference example will be described.
FIGS. 3A to 3C are schematic views showing the arrangement and operation of the solar power generation main panel P and sub panel sP of the reference example .
In this reference example , the inclination angles θ of the plurality of main panels P are continuously changed. And it is made to rotate so that the shadow by the sunlight orthogonal to the main panel P may not cover the adjacent main panel P, facing the main panel P to the sun.

In a time zone that is half of the power generation possible time zone, for example, in the morning time zone, the main panel P is rotated in the direction of the arrow α from the state where the maximum tilt angle shown in FIG. Change from zero to zero.
When each main panel P tracks sunlight while gradually reducing the inclination angle θ, the length of the shadow in the direction of the adjacent main panel P is reduced by the amount the inclination angle θ is reduced. Then, when a gap S is formed between the arrival point of the shadow with respect to the sub panel sP and the adjacent end of each main panel P, sunlight enters the gap S and irradiates the sub panel sP.

In addition, from the sunrise to the power generation possible time zone where the sun is low, the inclination angle θ of each main panel P is set to the maximum inclination as shown in FIG. I try to keep it.
That is, even in the time zone from sunrise, by maintaining the inclination angle θ of the main panel P at the maximum inclination angle, it is possible to generate power while making sunlight close to a right angle with respect to the light receiving surface.

FIG. 3C shows a state in which the main panel P has moved while tracking the sunlight, and the sunlight has entered between the adjacent main panels P and P. FIG. And the width | variety which sunlight injects between the adjacent main panels P and P becomes large gradually until the light-receiving surface of all the main panels P becomes flush.
Then, when the inclination angle θ of each main panel P becomes zero with respect to the surface surrounded by the main frame F1, and the light receiving surfaces of all the main panels P are flush with each other, as shown in FIG. In addition, the width of sunlight entering the gap S between the adjacent main panels P and P is maximized.
In this way, sunlight incident between the adjacent main panels P, P is also received by the sub-panel sP fixed at a position corresponding to the gap S when all the main panels P are flush with each other. Therefore, power is generated without waste in the power generation possible time zone when sunlight is the strongest.

  On the other hand, the support shaft 10 is further rotated in the direction of the arrow α in the latter half of the power generation possible time zone in which all the main panels P are flush with each other, for example, in the afternoon time zone. And in the evening when the sun becomes low, it will be in the state which faced the opposite of FIG.3 (b). At this time, each main panel P faces the west and the inclination angle θ is maximized.

As described above, in the apparatus of this reference example , the main panel P is movable, and the light receiving surface can be almost directly opposed to sunlight. When compared with the fixed type of the power generation panel, the installation area of the main panel P The power generation efficiency per hit can be increased.
Further, when each main panel P starts to move by tracking sunlight that is orthogonal, sunlight incident between the adjacent main panels P and P can be received by the sub panel sP, so that sunlight is wasted. It can be used for power generation without doing.
When each main panel P becomes flush, it corresponds to the time zone with the highest power generation efficiency, and sunlight incident on the gap S generated in that time zone can be received by the sub panel sP, so The amount of power generation per area can be further increased.

When power generation is completed in the evening, each main panel P in the opposite state of FIG. 3B is rotated in the direction opposite to the arrow α direction so that the main panel P becomes flush. Through the state shown in FIG. 3A, the state shown in FIG. 3B, which is the maximum inclination in the east direction, is maintained the next morning so that the player can start from there.
Further, the angle between the main frame F1 and the subframe F2 can be adjusted in accordance with the seasonal sun movement.

Furthermore, in the above reference example , the inclination angle θ is continuously adjusted in accordance with the direction of the sun during the power generation possible time period in which the sunlight becomes strong, but the adjustment of the inclination angle θ depends on the time period. It may be performed intermittently so that the same tilt angle θ is maintained for a certain time.
Further, the inclination angle θ of the main panel P is controlled according to the position of the sun by using a tracking sensor for tracking sunlight or calculating the position of the sun based on the data of the scientific chronology. May be. In addition, the inclination angle θ of the main panel P and the inclination angle θ of the main frame F1 and the like can be automatically moved and controlled in accordance with the day's movement of the sun.

In the first embodiment shown in FIGS. 4 and 5, the sub panel sP can also control the inclination angle θ in synchronization with the main panel P.
Note that the configuration for controlling the inclination angle θ of the main panel P is the same as the reference example, uses the same reference numerals as the reference example for their construction, a detailed description thereof will be omitted.

Three sub-panels sP having the same size and the same shape as the main panel P are arranged on the long side frame 4 of the sub-frame F2 provided in the connecting piece G so as to be parallel to the main frame F1 as in the reference example. 12, the main panel swing arm 8, and the connecting shaft 11.
Further, a sub-panel swing arm 9 having an inverted triangle is fixed to a side surface of the sub-main panel sP that is the same side surface as the main-panel swing arm 8 provided on the main panel P. As with the main panel swing arm 8, the sub panel swing arm 9 is provided with a support shaft 15, and is rotatably supported by the long side frame 4 of the sub frame F2.
A connecting shaft 11 is provided at the lower end of the sub-panel swing arm 9, and the connecting shaft 11 is rotatably attached to the crank rod 16. By means of this crank bar 16, all the sub-panel swing arms 9 swing together.
The crank rod 16 as described above is linked to the crank rod 12 of the main frame F1 via a linkage mechanism (not shown) so that the crank rods 12 and 16 can move in the same direction while being synchronized.

  Therefore, if the drive mechanism 13 is driven and the crank rod 12 of the main frame F1 is moved in the axial direction, the crank rod 16 of the subframe F2 is also moved by the same amount in the same direction. Thus, if both crank rods 12 and 16 move by the same amount in the same direction, the main panel P and the sub panel sP always maintain the same inclination angle θ.

As described above, in the first embodiment, the crank rods 12 and 16 are linked via a linkage mechanism (not shown). For example, a drive mechanism is provided separately for each of the crank rods 12 and 16, You may make it control the operation direction and operation amount of these drive mechanisms via the control mechanism which is not illustrated.
In any case, in the first embodiment, as long as the main panel P and the sub panel sP rotate synchronously and can always maintain the same inclination angle θ, the configuration for synchronizing them is not limited.

Next, the operation of the first embodiment will be described.
In the first embodiment, in the power generation possible time zone, the inclination angle θ of the main panel P and the sub panel sP is continuously adjusted so that the main panel P and the sub panel sP face the sun.

FIG. 5A shows that the inclination angle θ of the main panel P and the sub panel sP is zero with respect to the surface surrounded by the frames F1 and F2, and the light receiving surface of the main panel P and the sub panel sP. Each of the light receiving surfaces is in the same state.
Thus, in a state where the tilt angle is zero, the gap S formed between the adjacent main panels P is maximized, and the irradiation area of the sunlight radiated from between the gaps S to the sub panel sP is large. Become the maximum.

FIG. 5B shows that when the inclination angle θ of the main panel P is maximum, the sub panel sP also has the maximum inclination angle, and the main panel P and the sub panel sP adjacent to each other in the vertical direction are maintained in a flush state. I have to.
As described above, when the main panel P and the sub panel sP maintain the maximum inclination angle, the upper and lower main panels P and the sub panel sP are flush with each other in the course of their rotation. The positional relationship that does not match is maintained.
In addition, when the main panel P and the sub panel sP which adjoin in the upper and lower sides maintain the maximum inclination angle which becomes the same as above, the sub panel sP is in the shadow of the main panel P ahead of the sunlight irradiation direction. It hides in.

  Further, FIG. 5C shows a state in which the inclination angle θ between the main panel P and the sub panel sP is smaller than the maximum inclination angle shown in FIG. In this state, the sub panel sP faces the sun, and the irradiation area of the sunlight shining from between the gaps S is maintained. However, the irradiation area at this time is naturally smaller than the irradiation area when the inclination angle θ of the main panel P is set to zero.

Then, in the time zone that is half of the power generation possible time zone, each main panel P is rotated in the direction of the arrow α from the state of FIG. 5B to change the inclination angle θ from the maximum inclination angle to zero. Make P face the sun. In synchronism with the movement of the main panel P, the sub panel sP also rotates in the direction of the arrow α to change the inclination angle θ from the maximum to zero so as to face the sun.
Since the sub panel sP is also directly opposed to the sun in this way, even if the irradiation area is small, the amount of power generation is larger than in the case where the inclination angle θ of the sub panel sP continues to be zero as in the reference example. Become.

When the main panel P continues to rotate in the α direction and the tilt angle θ becomes zero, that is, when the state shown in FIG. 5A is reached, this corresponds to the time zone with the highest power generation efficiency. Sunlight incident on the gap S generated during the time period can be received by the sub panel sP. In other words, in the state shown in FIG. 5A, the irradiation area of sunlight on the sub panel sP is maximized.
Thus, since the irradiation area of the sunlight with respect to the sub panel sP is maximized in the time zone when the sunlight is the strongest, the power generation amount at that time is also maximized.

  On the other hand, in the evening, the main panel P and the sub panel sP are further rotated in the direction of the arrow α until the latter half of the power generation possible time zone in which all the main panels P are flush with each other, while FIG. ) To face the opposite. At this time, each main panel P and each sub panel sP are directed westward to maximize the inclination angle θ.

As described above, in the apparatus according to the first embodiment, the sub panel sP also directly faces sunlight, so that the power generation amount per panel installation area can be further increased. Moreover, since the panel of the same shape as the main panel P can be used, it is excellent in versatility.
Other effects are the same as in the reference example .

In the second embodiment shown in FIGS. 6 and 7, the width of the sub panel sP is made smaller than that of the sub panel sP of the reference example , and the tilt angle θ of the sub panel sP can also be controlled in synchronization with the main panel P. It is a thing. However, the configuration for controlling the inclination angle θ of the main panel P is the same as the above Reference Example, is by the same reference numerals as the reference example for their construction, a detailed description thereof will be omitted.

In the second embodiment shown in FIG. 6, the connecting piece G used in the reference example is omitted, and the short side frames 3 and 3 of the main frame F1 are directly attached to the leg members 6 and 6 so as to be rotatable.

As shown in FIG. 6, sub-panel swing arms 17, 17 are swingably attached to the long side frames 2, 2 via support shafts 18. The sub-panel swing arms 17 and 17 correspond to the intermediate positions of the gaps S formed when the inclination angle θ of the main panel P is zero.
Further, the sub-panel swing arm 17 is rotatably attached to the crank rod 12 below the support shaft 18 via a connecting shaft 20 serving as a linkage point of the present invention. Then, all the sub-panel swing arms 17 are connected by the crank rod 12 so as to swing integrally with the main panel swing arm 8 of the main panel.

Further, the sub-panel sP is fixed by a fixing member 19 such as a bolt at the other end of the sub-panel swing arm 17 and below the connecting shaft 20 that is the linkage point.
The horizontal width of the sub panel sP has a horizontal width that corresponds to the length of the gap S that is maximized when the inclination angle θ of the main panel P is zero. Have the same length. Accordingly, the sub panel sP corresponds to the maximum gap S when the inclination angle θ of the main panel P becomes zero.

  Further, the rotation trajectories of the main panel P and the sub panel sP in the necessary rotation range do not interfere with each other. In addition, the said rotation required range is a rotation range required in order to track sunlight.

On the other hand, a drive mechanism 13 is provided between the long side frame 2 of the main frame F1 and the crank rod 12. Accordingly, when the drive mechanism 13 is driven, the crank rod 12 moves in the axial direction, and the main panel swing arm 8 and the sub panel swing arm 17 swing simultaneously with the movement of the crank rod 12. To do.
Since the main panel swing arm 8 and the sub panel swing arm 17 can be swung simultaneously in this way, the inclination angle θ between the main panel P and the sub panel sP can be controlled simultaneously.
Accordingly, only one drive mechanism 13 for controlling the inclination angle θ between the main panel P and the sub panel sP is sufficient, and the cost merit is increased correspondingly, and the main panel P and the sub panel sP can be synchronized. It will be easy.
Further, since the sub panel sP can track sunlight while swinging, the sub panel sP can be accurately opposed to the light entering from the gap S.
Other configurations are the same as those of the reference example .

In the second embodiment, in the power generation possible time zone, the inclination angle θ of the main panel P and the sub panel sP is controlled so that the main panel P and the sub panel sP face the sun.
7A shows that the inclination angle θ of the main panel P and the sub panel sP is zero with respect to the surface surrounded by the frames F1 and F2, and that the light receiving surface of the main panel P and the sub panel sP Each of the light receiving surfaces is in the same state.
Thus, in the state where the inclination angle θ is zero, the gap S formed between the adjacent main panels P is maximized, and the sub-panel sP is irradiated with sunlight that enters the gap S. The area is maximized.

  FIG. 7B shows a state in which a part of the sub panel sP is arranged so as to cover the back surface of the main panel when the inclination angle θ of the main panel P is maximum. The sub panel sP also has the maximum inclination, and the sub panel sP prevents the main panel P and the sub panel sP from interfering with each other when the inclination angle θ of the main panel P is the maximum inclination. Just as you did.

  Further, FIG. 7C shows a state in which the inclination angle θ between the main panel P and the sub panel sP is smaller than the maximum inclination angle shown in FIG. Even in this state, the sub panel sP faces the sun, and the irradiation area of the sunlight shining through the gap S is maintained. However, the irradiation area at this time is naturally smaller than the irradiation area when the inclination angle θ of the main panel P is set to zero.

Then, during the half of the power generation possible time zone, each main panel P is rotated in the direction of arrow α from the state of FIG. 7B to change the tilt angle θ from the maximum tilt angle to zero, and each main panel Make P face the sun. In synchronism with the movement of the main panel P, the sub panel sP also rotates in the direction of the arrow β to change the inclination angle θ from the maximum to zero so as to face the sun.
Since the sub panel sP is also directly opposed to the sun in this way, even if the irradiation area is small, the amount of power generation is larger than in the case where the inclination angle θ of the sub panel sP continues to be zero as in the reference example. Become.

When the main panel P continues to rotate in the α direction and the inclination angle θ becomes zero, that is, when the state shown in FIG. 7A is reached, it corresponds to the time zone with the highest power generation efficiency. Sunlight incident on the gap S generated during the time period can be received by the sub panel sP. In other words, in the state of FIG. 7A, the irradiation area of sunlight on the sub panel sP is maximized.
Thus, since the irradiation area of the sunlight with respect to the sub panel sP is maximized in the time zone when the sunlight is the strongest, the power generation amount at that time is also maximized.

  On the other hand, while the main panel P is further rotated in the direction of the arrow α and the sub panel sP is further rotated in the direction of the arrow β until the second half of the power generation possible time zone in which all the main panels P are in the same plane, In the evening, it turns to the opposite of FIG. At this time, each main panel P faces the west, and the inclination angle θ is set to the maximum inclination angle, and a part of the sub panel sP is disposed on the back surface of the main panel.

As described above, in the apparatus according to the second embodiment, since the sub panel sP also directly faces sunlight, the power generation amount per panel installation area can be further increased.
Further, the width of the sub panel sP is reduced to about the gap S, and sunlight is oscillated while swinging the light receiving surface of the sub panel sP according to the sunlight incident between the adjacent main panels P and P. Since tracking is possible, it is possible to accurately face the light entering from the gap.
Other effects are the same as in the reference example .

  This is useful for solar power generators in places where the installation area is limited.

P main panel, sP sub panel, θ inclination angle, 1 support shaft, F1 main frame, F2 subframe, L interval, S gap, 6 leg member, 8 main panel swing arm, 9, 17 sub panel swing arm 10, 15, 18 support shaft, 11, 20 connection shaft, 12, 16 crank rod, 13 drive mechanism

Claims (3)

A plurality of main panels are rotatably supported with respect to the main frame, and a drive mechanism for the main panel that controls the tilt angle of the main panel is provided. The drive mechanism of the drive mechanism for the main panel rotates. However, when the light receiving surface of the main panel is maintained at an inclination angle that is almost directly opposite to the sunlight, and when the inclination angle is maximum, the shadow of each main panel is adjacent to the main panel adjacent to the incident direction of sunlight. A solar power generation device provided with a gap that does not take place,
The sun which is in a position corresponding to the gap between the main panels formed when the plurality of main panels are flush with each other, and has a sub panel disposed below the main panel, and is incident on the gap While light is received by the sub-panel ,
A sub-frame is provided below the main frame, and one or more sub-panels are rotatably provided on the sub-frame, and the drive mechanism for the main panel for rotating the sub-panel or A drive mechanism for the sub panel different from the drive mechanism is provided, and the light receiving surface of the sub panel faces the sunlight substantially while being rotated by the drive force of the drive mechanism for the main panel or the drive mechanism for the sub panel. A solar power generation device that maintains the tilt angle . A plurality of main panels are rotatably supported with respect to the main frame, and a drive mechanism for the main panel that controls the tilt angle of the main panel is provided. The drive mechanism of the drive mechanism for the main panel rotates. However, when the light receiving surface of the main panel is maintained at an inclination angle that is almost directly opposite to the sunlight, and when the inclination angle is maximum, the shadow of each main panel is adjacent to the main panel adjacent to the incident direction of sunlight. A solar power generation device provided with a gap that does not take place,
The sun which is in a position corresponding to the gap between the main panels formed when the plurality of main panels are flush with each other, and has a sub panel disposed below the main panel, and is incident on the gap While light is received by the sub-panel,
A swing arm is swingably provided on the main frame, and a crank rod for swinging the swing arm is connected to the swing arm, and the swing arm is configured to swing with the crank rod. A photovoltaic power generation apparatus in which the sub panel is provided below a linkage point with a moving arm, and the tilt angle of the sub panel is controlled according to the axial movement of the crank rod . 3. A common drive mechanism is provided for the main panel and the sub panel, and the inclination angle of the main panel and the sub panel is controlled in synchronization with the drive force of the common drive mechanism. Solar power generator.

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