JP5524314B2 - Solar cell device - Google Patents

Description

  The present invention relates to a solar cell device suitable for use in poor climatic conditions such as desert areas.

  Conventionally, a solar cell device of this type is disclosed in Patent Document 1. In Patent Document 1, a rotating body, a plurality of solar battery panels supported by the rotating body so that the attitude can be changed between an open attitude and a closed attitude, and a plurality of solar battery panels, the closed attitude and the open attitude. The solar cell apparatus provided with the opening-and-closing mechanism part which changes an attitude | position between.

  According to this solar cell device, the plurality of solar cell panels are less likely to receive wind by closing the plurality of solar cell panels. For this reason, the destruction by a strong wind etc. can be suppressed. Moreover, by rotating the plurality of solar cell panels in a state where the plurality of solar cell panels are in the open posture, particles such as dust flying in the air are dropped from the solar cell panel. Thereby, the fall of the power generation efficiency by particles, such as dust which flies in the air, can also be controlled.

JP 2012-43936 A

  However, according to the technique disclosed in Patent Document 1, the light-receiving surface of the solar cell panel is easily soiled or damaged by sand dust or the like that flies by the wind. Thereby, light is reflected by the light-receiving surface of the solar cell panel, and the power generation efficiency of the solar cell panel may be reduced.

  Then, an object of this invention is to suppress the fall of the power generation efficiency of a solar cell panel.

  In order to solve the above problem, a solar cell device according to a first aspect includes a support member including a main shaft portion, a plurality of solar cell panels that can be disposed so as to surround the main shaft portion, and the plurality of solar cell panels. The support member can be changed in posture between an open posture extending radially around the main shaft portion and a closed posture extending along the main shaft portion, and can be turned upside down. A support mechanism, and an opening / closing mechanism that changes the position of the plurality of solar battery panels between the closed position and the open position.

In the first aspect, the panel support mechanism section includes a panel support rod having one end connected to the support member so that an angle formed with respect to the main shaft section can be changed, and the panel support rod around the panel support rod. And a support shaft portion that rotatably supports the solar cell panel.

A 2nd aspect is a solar cell apparatus which concerns on a 1st aspect, Comprising: The reverse drive part which rotationally drives the said solar cell panel around the said panel support rod is further provided.

A 3rd aspect is a solar cell apparatus which concerns on a 1st or 2nd aspect, Comprising: The said support member is supported so that the periphery of the axis | shaft of the said main-axis part can rotate.

  According to the first aspect, since the plurality of solar cell panels are supported so that they can be turned upside down, in a strong wind or the like, the solar cell panel is placed in a closed posture with the light receiving surface of the solar cell panel facing inward. I can leave. Thereby, it can suppress that the light-receiving surface of a solar cell panel gets dirty or is damaged, and can suppress the fall of the power generation efficiency of a solar cell panel.

According to the first aspect, by changing the angle of the panel support rod with respect to the main shaft portion, it is possible to change the posture of the plurality of solar battery panels between the open posture and the closed posture. Moreover, a solar cell panel can be reversed upside down by rotating a solar cell panel around a panel support rod.

According to the 2nd aspect, a solar cell panel can be reversely driven.

According to the third aspect, particles such as dust flying in the air are dropped from the solar cell panel by rotating the solar cell panels in a state where the solar cell panels are opened. Thereby, the fall of the power generation efficiency by particles, such as dust which flies in the air, can also be controlled.

It is a perspective view which shows the solar cell apparatus in the state which the solar cell panel closed. It is a perspective view which shows the solar cell apparatus in the state in which the solar cell panel was opened. It is a partial expansion explanatory view of a solar cell device. It is a perspective view which shows the solar cell apparatus in the state in which the solar cell panel was turned upside down and closed.

  Hereinafter, the solar cell device according to the embodiment will be described. 1 is a perspective view showing the solar cell device 10 with the solar cell panel 30 closed, and FIG. 2 is a perspective view showing the solar cell device 10 with the solar cell panel 30 open. FIG. 4 is a partially enlarged explanatory view of the solar cell device 10, and FIG. 4 is a perspective view showing the solar cell device 10 in a state where the solar cell panel 30 is turned upside down and closed.

  This solar cell device 10 includes a support member 20 including a main shaft portion 22, a plurality of solar cell panels 30, a panel support mechanism portion 40, and an opening / closing mechanism portion 50.

  The support member 20 is a member including an elongated main shaft portion 22 and is erected in a posture in which the main shaft portion 22 is along the vertical axis. Here, the support member 20 is supported so as to be rotatable around a rotation axis X (which is also a central axis of the main shaft portion 22) along the vertical axis.

  More specifically, the support member 20 is rotatably supported on the base 12 via the rotation drive mechanism unit 60. The base 12 is formed in a shape that can be placed in a fixed posture on the ground or a horizontal surface such as the roof of a building. In FIG. 1, the base 12 is formed on a circular plate, but may be a polygonal plate, a structure supported by a plurality of legs, or the like. Moreover, the structure fixed to a wall of a building, a rooftop, etc. with a volt | bolt etc. may be sufficient as a base.

  The support member 20 has a main shaft portion 22 and a connection support portion 24. The main shaft portion 22 is supported on the base 12 via a rotation drive mechanism portion 60 so as to be rotatable in a vertical posture. The connection support portion 24 is attached to the upper end portion of the main shaft portion 22 and is configured to rotate together with the main shaft portion 22. Here, the connection support portion 24 is formed in a polygonal plate shape (preferably a regular polygonal plate shape, here a regular hexagonal plate shape), and the main shaft portion 22 is connected to the center portion thereof. The connection support portion 24 may have a frame structure in which a plate in which holes are formed or a combination of rod-like members is combined. Thereby, the wind can easily pass through the solar cell device 10, and the temperature rise of the solar cell device 10 can be suppressed.

  Each solar cell panel 30 is formed in a square plate shape. Then, the light receiving surface, which is one main surface of the solar cell panel 30, is irradiated with light such as sunlight, whereby power is generated in each solar cell panel 30. And the electric power which generate | occur | produced in the some solar cell panel 30 is taken out as total generated electric power via a solar power generation control apparatus etc. FIG.

  The plurality of solar cell panels 30 are configured to be disposed so as to surround the main shaft portion 22. Here, a plurality of solar cell panels 30 are arranged so as to surround each of the upper part and the lower part of the main shaft part 22. Here, the plurality of solar cell panels 30 are arranged so as to constitute side surfaces of a polygonal column (here, a regular hexagonal column) and surround the main shaft portion 22.

  The panel support mechanism 40 is a member that supports the plurality of solar cell panels 30 with respect to the support member 20. Here, the panel support mechanism unit 40 supports the plurality of solar cell panels 30 so that the posture can be changed between the open posture and the closed posture, and supports the plurality of solar cell panels 30 so that the front and back sides can be reversed. Here, the open posture is a posture in which each solar cell panel 30 extends radially around the main shaft portion 22, and the closed posture is a posture in which each solar cell panel 30 extends along the main shaft portion 22 (that is, The posture surrounding the main shaft portion 22).

  More specifically, the panel support mechanism portion 40 includes a plurality of panel support rods 42 and a support shaft portion 44.

  The plurality of panel support rods 42 are rod-shaped members, and one end portions thereof are connected to the outer periphery of the connection support portion 24 so that the angle formed with respect to the main shaft portion 22 can be changed. The connection positions of the panel support rods 42 with respect to the connection support portion 24 are equally spaced around the outer periphery of the connection support portion 24.

  The support shaft portion 44 is configured to rotatably support the solar cell panel 30 around the panel support rod 42. Here, a support shaft portion 44 is provided on the back surface side of the solar cell panel 30, and the panel support rod 42 is inserted through the support shaft portion 44. Then, the support shaft portion 44 is made rotatable around the panel support rod 42, so that the solar cell panel 30 rotates around the panel support rod 42. Accordingly, the solar cell panel 30 is moved around the panel support rod 42 between the state where the light receiving surface of the solar cell panel 30 faces outward or upward and the state where the light receiving surface of the solar cell panel 30 faces inward or downward. Can be reversed.

  Here, the solar cell panel 30 is supported in two places between the base end side portion and the tip end side portion of the plurality of panel support rods 42 so as to be able to be reversed upside down. The number of solar cell panels 30 supported by each panel support rod 42 may be one or plural.

  Each panel support rod 42 opens and closes in a state where each solar cell panel 30 is supported by each panel support rod 42 in a posture along the tangential direction of the circle centered on the main shaft portion 22. In a posture in which each panel support rod 42 extends along the main shaft portion 22 along the vertical direction, each of the solar cell panels 30 is disposed in a closed posture. In addition, each of the solar battery panels 30 is disposed in an open position in a posture in which each panel support rod 42 is inclined in a direction away from the main shaft portion 22 with a connection portion at one end thereof as a center. Each solar cell panel 30 may be maintained in an intermediate posture between the open posture and the closed posture.

  In addition, here, a reversal drive unit 70 that rotationally drives the solar cell panel 30 around the panel support rod 42 is further provided. The inversion driving unit 70 is attached to each panel support rod 42 and is configured to rotationally drive the solar cell panel 30 that is rotatably supported with respect to the panel support rod 42. Such a reversal drive unit 70 can be realized, for example, by a configuration in which the rotational driving force of the motor is transmitted to the solar cell panel 30 via a gear, pulley, or a combined rotation transmission mechanism. The rotation position restriction for reversing the solar cell panel 30 may be realized by a physical stopper that stops the contact when the solar cell panel 30 is rotated 180 degrees, or is performed by controlling the amount of rotation of the motor. However, the inversion driving unit 70 may be omitted and the solar cell panel 30 may be inverted manually. In this case, in order to maintain the light receiving surface or back surface of the solar cell panel 30 in an outward or upward state, a position holding component such as a ball plunger may be provided on the panel support rod 42.

  The opening / closing mechanism unit 50 is configured to change the posture of the plurality of solar battery panels 30 between the closed posture and the open posture. Here, the opening / closing mechanism section 50 includes a movable section 52 that can move along the main shaft section 22 and a plurality of connecting rod-shaped sections 54 that connect each solar cell panel 30 to the movable section. One end of each connecting rod-like portion 54 is swingably connected to the movable portion 52, and the other end of the connecting rod-like portion 54 is swingably connected to the panel support rod 42. Here, the other end portion of the connecting rod-like portion 54 is connected to a middle portion in the longitudinal direction of the panel support rod 42, that is, a portion between the two solar cell panels 30 supported by the panel support rod 42. The other end portion of the connecting rod-like portion 54 may be directly connected to the panel support rod 42 or may be connected via the inversion driving portion 70 or the like. Further, the other end portion of the connecting rod-like portion 54 may be connected to the tip portion of the panel support rod 42. In this case, the number of solar cell panels 30 supported by each panel support rod 42 may be one.

  When the movable portion 52 is moved downward, the other end portion of each connecting rod-shaped portion 54 moves downward along the main shaft portion 22 and one end portion of each connecting rod-shaped portion 54 faces the main shaft portion 22 side. Drawn in. Thereby, each solar cell panel 30 is changed in posture to the closed posture (see the solid lines in FIGS. 1 and 3 and FIG. 4). On the other hand, when the movable portion 52 is moved upward, the other end portion of each connecting rod-shaped portion 54 moves upward along the main shaft portion 22, and one end portion of each connecting rod-shaped portion 54 moves away from the main shaft portion 22. It is pushed toward. Thereby, each solar cell panel 30 is changed in posture to the open posture (two-dot chain line in FIGS. 2 and 3).

  In the present embodiment, the opening / closing mechanism unit 50 includes the linear actuator 58 as an opening / closing drive unit that drives the plurality of solar battery panels 30 to change the posture between a closed posture and an open posture. As the linear actuator 58, a linear motor, a hydraulic cylinder, an air cylinder, or the like can be used. The linear actuator 58 has a rod portion 59 that can be driven back and forth, and is attached to the main shaft portion 22. Further, the tip of the rod part 59 is connected to the movable part 52. Then, by moving the rod portion 59 forward and backward from the linear actuator 58, the movable portion 52 moves up and down along the main shaft portion 22, and the solar cell panels 30 move between the closed posture and the open posture along with the raising and lowering. The posture is changed between the two.

  However, the linear actuator 58 as the opening / closing drive unit may be omitted, and the movable unit 52 may be moved up and down manually. In this case, in order to maintain the movable portion 52 at each of the upper and lower positions, a position holding component such as a ball plunger may be provided on the main shaft portion 22.

  The rotation drive mechanism 60 rotates the support member 20 together with the panel support rods 42 and the solar cell panels 30. Here, the rotation drive mechanism unit 60 includes a motor and a rotation transmission unit that transmits the rotation of the motor to the main shaft unit 22. The rotation transmission unit is configured by a combination of a plurality of gears and the like, and is configured to appropriately adjust the rotation speed of the motor and transmit it to the main shaft unit 22. The rotational drive mechanism 60 is provided on the base 12 and supports the main shaft 22 so as to be rotationally driven. And the support member 20 is rotationally driven by the rotational drive mechanism part 60, and the some solar cell panel 30 is rotationally driven according to this.

  But this rotation drive mechanism part 60 is abbreviate | omitted, and the main-axis | shaft part 22 may be supported in the state which cannot rotate to the base 12 grade | etc., Or the ability to rotate.

  The linear actuator 58, the rotation drive mechanism 60, and the reverse drive unit 70 are driven and controlled via a drive circuit (not shown) under the control of the control unit 80. The control unit 80 is a general microcomputer including a CPU, a ROM, a RAM, and the like, and drives and controls the linear actuator 58, the rotation drive mechanism unit 60, and the reverse drive unit 70 in accordance with a software program stored in advance. Here, an input unit 82 such as a switch is connected to the control unit 80, and the linear actuator 58, the rotation drive mechanism unit 60, and the reverse drive unit 70 are driven and controlled in accordance with a command input through the input unit 82. For example, when a command for closing the solar cell panel 30 or an open posture is input, the linear actuator 58 is driven and controlled to move up and down according to the command. Further, for example, when a command to rotate or stop the solar battery panel 30 is input, the rotation drive mechanism unit 60 is rotationally driven or stopped in accordance with the command. Further, for example, when a command to reverse the solar cell panel 30 is input, the reverse driving unit 70 is rotationally driven in accordance with the command to rotate the solar cell panel 30 around the panel support rod 42. The inversion of the solar cell panel 30 is preferably performed in an open posture in order to avoid interference between the solar cell panel 30 and the opening / closing mechanism unit 50. Thereby, according to the command input through the input unit 82, the plurality of solar cell panels 30 are set to the open posture or the closed posture, the plurality of solar cell panels 30 are set to the rotation state or the rotation stop state, A plurality of solar cell panels 30 can be inverted.

  According to the solar cell device 10 configured as described above, the plurality of solar cell panels 30 are supported so that the posture can be changed between the closed posture and the open posture, and the plurality of solar cell panels 30 can be turned upside down. It is supported. Specifically, by changing the angle of the panel support rod 42 with respect to the main shaft portion 22, it is possible to change the posture of the plurality of solar battery panels 30 between the open posture and the closed posture, and the panel support rod 42. The solar cell panel 30 can be turned upside down by rotating the solar cell panel around. For this reason, at the time of a strong wind etc., the solar cell panel 30 can be made into a closed attitude | position with the light-receiving surface of the solar cell panel 30 facing inward. Thereby, even if sand dust etc. are sprayed on the solar cell panel 30 at the time of a strong wind etc., it can suppress that the light-receiving surface of the solar cell panel 30 gets dirty or gets damaged. Moreover, it can suppress that snow sprays on the solar cell panel 30 at the time of wind and snow. Thereby, the light-receiving surface of the solar cell panel 30 is maintained in a state suitable for sunlight reception, and a decrease in power generation efficiency of the solar cell panel 30 can be suppressed.

  In addition, when installing this solar cell apparatus 10 in the area where it is easy to accumulate snow, it is good to change installation height according to the amount of snow accumulation estimated. That is, it is better to set the solar cell device 10 at a higher position as the amount of snow is predicted to be larger. Thereby, the posture of the solar battery panel 30 can be smoothly changed from the closed posture to the open posture without being disturbed by snow accumulation.

  Moreover, since the solar cell panel 30 is inverted and driven by the inversion driving unit 70, the solar cell panel 30 can be inverted without directly inverting the solar cell panel 30 by hand. For this reason, even when the solar cell panel 30 is installed in a place where it is difficult to reach such as a high place, the solar cell panel 30 can be easily inverted.

  In addition, it is preferable that the plurality of solar cell panels 30 be in a closed posture when the wind is strong (preferably also at night). In addition, it is preferable to keep the plurality of solar cell panels 30 in an open posture during daytime and when there is no wind (preferably even during a weak wind).

  That is, by making the plurality of solar cell panels 30 in a closed posture, the plurality of solar cell panels 30 are less likely to receive wind. The destruction of the solar cell device 10 can be suppressed. In the daytime, even when the plurality of solar cell panels 30 are in the closed posture, the solar cell panel 30 on the side facing the sun is irradiated with sunlight, so that power generation can be expected.

  On the other hand, when there is no wind or light winds in the daytime, the plurality of solar cell panels 30 are kept in an open posture, so that the plurality of solar cell panels 30 can effectively receive sunlight to generate power.

  At these times, by rotating the plurality of solar cell panels 30, particles such as dust flying in the air and snow are shaken off from the solar cell panel 30. Thereby, the fall of the power generation efficiency by particles, such as dust flying in the air, and snow adhering to the solar cell panel 30 can also be suppressed.

  In particular, when the rotation driving mechanism unit 60 continues the rotation of the plurality of solar cell panels 30, particles such as dust flying in the air are more reliably dropped from the solar cell panel 30. Thereby, the fall of the power generation efficiency by particles, such as dust which flies in the air, can be suppressed more reliably.

  Moreover, since each solar cell panel 30 is cooled by rotating the several solar cell panel 30 at the time of electric power generation, deterioration by heat_generation | fever is suppressed and durability improves. Moreover, since sunlight is temporally dispersed and irradiated to the plurality of solar cell panels 30, the degree of deterioration of the solar cell panels 30 is averaged, and the lifetime of the solar cell device 10 as a whole is improved.

  The rotation of the plurality of solar cell panels 30 may be performed only when the plurality of solar cell panels 30 are in the open posture, may be performed in both the open posture and the closed posture, and is temporarily performed regardless of the posture. May be made.

  In the present embodiment, the user of the present solar cell device 10 operates through the input unit 82 according to the weather conditions, etc. day and night, thereby switching the plurality of solar cell panels 30 between the closed posture and the open posture, and the rotating state. It is assumed that the rotation is stopped and the solar battery panel 30 is reversed.

  However, on the basis of the output of a wind sensor that detects the intensity of wind, an illuminance sensor that detects the presence or absence of light such as sunlight, a plurality of solar cell panels 30 are provided in a strong wind (preferably also at night). The solar cell panel 30 is inverted so that the back surface of the solar cell panel 30 faces outward, and the plurality of solar cell panels 30 are opened in the daytime and when there is no wind (preferably even during low winds). In addition, the light receiving surface of the solar cell panel 30 may be outward or downward. In other cases, either a closed posture or an open posture may be used.

  As described above, the present invention has been described in detail. However, the above description is illustrative in all aspects, and the present invention is not limited thereto. It is understood that countless variations that are not illustrated can be envisaged without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 10 Solar cell apparatus 12 Base 20 Support member 22 Main shaft part 24 Rotation end part 30 Solar cell panel 40 Panel support mechanism part 42 Panel support rod 44 Support axis part 60 Rotation drive mechanism part 70 Reverse drive part

Claims (3)

A support member including a main shaft portion;
A plurality of solar cell panels that can be disposed so as to surround the main shaft portion;
The plurality of solar cell panels can be changed in posture between an open posture extending radially about the main shaft portion and a closed posture extending along the main shaft portion with respect to the support member, and front and back A panel support mechanism that supports the reversible;
An opening / closing mechanism for changing the position of the plurality of solar battery panels between the closed position and the open position;
Equipped with a,
The panel support mechanism unit has a panel support rod having one end connected to the support member so that an angle formed with respect to the main shaft unit can be changed, and rotatably supports the solar cell panel around the panel support rod. A solar cell device including a supporting shaft portion . The solar cell device according to claim 1,
A solar cell device further comprising an inversion drive unit that rotationally drives the solar cell panel around the panel support rod . The solar cell device according to claim 1 or 2,
The solar cell device , wherein the support member is rotatably supported around an axis of the main shaft portion .

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