JP6933715B2 - Solar power system - Google Patents

Description

The present invention relates to a photovoltaic power generation system including a solar cell mount on which a plurality of solar cell panels are mounted and an installation portion of an electric device to which the solar cell panels are electrically connected. It relates to how to install the equipment.

In recent years, photovoltaic power generation systems have been widely used as one of the clean energies with low environmental load. However, in areas with heavy snowfall, snow accumulates on the solar cell panels in winter, and the amount of light received decreases or the sun. The battery panel and its mount may be damaged by the weight of snow. Therefore, in the photovoltaic power generation system for areas with a large amount of snowfall, measures have been taken to avoid the above-mentioned problems.

As an example, those disclosed in Patent Documents 1 and 2 have a structure in which the inclination angle of the mounting base of the solar cell mount can be adjusted. As a result, the tilt angle of the mounting table is reduced in order to increase the amount of light received by the solar cell panel in seasons other than winter. On the other hand, in winter, the tilt angle of the mounting table is increased so that the amount of snow that accumulates on the solar cell panel is reduced and the accumulated snow is more likely to slide down.

Japanese Unexamined Patent Publication No. 2013-219174 (published on October 24, 2013) Utility Model Registration No. 3183334 (Released on May 16, 2013)

By the way, in general, an electric device such as a power conditioner is connected to a solar cell panel, and a storage box thereof may be installed at a ratio of about 1 in 10 to 20 of the solar cell mounts, for example. In addition to this, for example, a junction box, a current collector box, etc. may be installed on the solar cell mount, but in an area with a large amount of snowfall as described above, where to install these boxes becomes a problem.

That is, in the case of a power conditioner, for example, if the storage box is buried in snow, proper ventilation cannot be performed, heat tends to be trapped, and the heat melts the snow and water enters the storage box. In some cases, this may cause various problems. Needless to say, if the storage box is buried in snow, maintenance will be hindered.

Therefore, it is conceivable to install a storage box for these electric devices under the solar cell stand, for example, to protect the snow. Therefore, a sufficient effect cannot be expected. If you try to install it in a place other than the solar cell mount, not only will it require extra space, but you will also need to take additional measures to prevent it from being buried in the snow.

The present invention has been made in consideration of these various points, and an object of the present invention is to secure a suitable installation space for electrical equipment in a photovoltaic power generation system capable of suppressing snow accumulation on a solar cell panel. be.

The photovoltaic power generation system according to the present invention includes a solar cell mount on which a plurality of solar cell panels are mounted, and an installation portion of an electric device to which the solar cell panels are electrically connected. The gantry is provided with a pair of mounting portions on which the solar cell panel is mounted and rotatably connected to each other at the connecting portion, and a holding portion for holding the pair of mounting portions with respect to the support column. , The pair of mounting portions are configured to be foldable so as to bend in a chevron shape with the connecting portion as the top.

Then, the installation portion is provided at a position where the electric device is installed below the pair of mounting portions in a bent state so as to be covered with the solar cell panel and the above-mentioned mounting portion when viewed from above. ing. It should be noted that the description "so as to be covered with the solar cell panel and the above-mentioned mounting portion" does not mean that the electric device is completely covered, that is, without a gap when viewed from above, but from the gap. It also means that the electrical equipment can be seen.

According to the photovoltaic power generation system configured in this way, it is possible to provide an installation part of the electric device capable of effectively suppressing the influence of snow accumulation on the electric device such as a power conditioner connected to the solar cell panel. can.

It is a figure which shows the structure of the photovoltaic power generation system which concerns on Embodiment 1, and is the perspective view which looked at the solar cell pedestal from the back side. It is a front view of the solar cell pedestal which concerns on Embodiment 1. FIG. (A) and (b) are perspective views showing the expanded state and the folded state of the solar cell mount according to the first embodiment, respectively. (A) to (c) are side views showing the expanded state, the state in the middle of folding, and the folded state of the solar cell pedestal according to the first embodiment, respectively. It is a perspective view which shows the installation state of the power conditioner by omitting a part of a solar cell panel. It is a front view which shows the installation state of the power conditioner. It is a side view which shows the installation state of a power conditioner.

[Embodiment 1]
Regarding one embodiment of the present invention, first, the configuration of the solar cell mount 1 of the photovoltaic power generation system according to the present embodiment will be described with reference to FIGS. 1 to 4. FIG. 1 is a perspective view of the solar cell mount 1 viewed from diagonally below, and FIG. 2 is a front view thereof. Further, FIGS. 3A and 3B are perspective views showing an unfolded state and a folded state of the solar cell mount 1, and FIGS. 4A to 4C also show a state in the middle of folding. It is a side view.

As shown in FIGS. 1 and 2, the solar cell mount 1 has a mounting base (a pair of mounting portions 10A and 10B) on which the solar cell panel is mounted, and the mounting base can be displaced with respect to the support column 30. It is provided with a mounting base holding portion (main shaft 40 and a plurality of arms 50) for holding. The mounting table is divided into a pair of mounting portions 10A and 10B at the center thereof, and is connected by a rotation mechanism portion 60 (connecting portion) at the divided portion, and a solar cell array composed of a plurality of solar cell panels on the upper surface thereof. 80A and 80B are mounted.

That is, the pair of mounting portions 10A and 10B rotate around the rotation center line X in the rotation mechanism portion 60, and as shown in FIGS. 3 (b) and 4 (b) and (c), It is bent into a chevron shape with the rotating mechanism portion 60 at the top and folded. Corresponding to the fact that the mounting table is divided into a pair of mounting portions 10A and 10B in this way, in the present embodiment, the solar cell arrays 80A and 80B are mounted on the respective mounting portions 10A and 10B. ..

More specifically, as shown in FIG. 1, the pair of mounting portions 10A and 10B are a combination of vertical rails 20A and horizontal rails 20B in a grid pattern, respectively, and in the present embodiment, the direction of the rotation center line X. Two horizontal rails 20B and 20C extending to the above and four vertical rails 20A orthogonal to the horizontal rails 20B and 20C are combined. In the illustrated example, the four vertical rails 20A and the one horizontal rail 20B are steel materials having a shape to which a fixture or a rail for fixing the solar cell panel can be attached to the upper surface or the lower surface thereof. The remaining one cross rail 20C uses an angle material.

Then, one end portions of the four vertical rails 20A constituting the respective mounting portions 10A and 10B are individually connected to the rotation mechanism portion 60. That is, the rotation mechanism portion 60 includes a round bar-shaped sub-shaft 61 juxtaposed above the main shaft 40 constituting the mounting base holding portion, and the sub-shafts 61 have the above-mentioned mounting portions 10A and 10B. The round holes provided at one end of the vertical rail 20A are extrapolated and rotatably connected.

The vertical rail 20A on the mounting portion 10A side and the vertical rail 20A on the mounting portion 10B side are connected by shifting their positions in the extending direction of the sub-shaft 61 (direction of the rotation center line X). As a result, when the mounting portions 10A and 10B are rotated around the sub-shaft 61, the vertical rails 20A do not come into contact with each other, and the angles formed by the pair of mounting portions 10A and 10B are different. The mounting table can be bent by the rotating mechanism unit 60 so as to be considerably small (for example, 10 to 20 °).

The mounting table holding portion for holding the mounting table (a pair of mounting portions 10A, 10B) made so bendable is fixed to the upper end portion of the support column 30, and is a main shaft extending in the direction of the rotation center line X. 40 and a plurality of arms 50 (eight in the present embodiment) which are arranged apart from each other in the longitudinal direction and extend diagonally upward to support a pair of mounting portions 10A and 10B, respectively. ing.

As shown in FIG. 2, the support column 30 is approximately vertically erected on the ground on which the solar cell mount 1 is installed, but the main shaft 40 is slightly inclined with respect to the ground so as to follow this inclination. The platform is also tilted with respect to the ground. Specifically, the main shaft 40 is fixed by tilting downward in the south direction at an inclination angle of less than 10 degrees with respect to the ground so that the solar cell arrays 80A and 80B face the direction of the sun when the solar cell arrays 80A and 80B are in the south. As a result, the amount of sunlight received can be increased and the amount of power generation can be improved.

The main shaft 40 extending substantially horizontally (slightly inclined) from the upper end of the support column 30 has a rectangular closed cross-section structure, has sufficient strength and rigidity, and is further connected to the support column 30 by a square steel material. The brace 31 is provided diagonally. Then, as described above, the arms 50 extend in half (four in the present embodiment) toward the mounting portions 10A and 10B diagonally upward from the main shaft 40.

That is, as shown in FIG. 1, the main shaft 40 has an arm 50 extending toward one mounting portion 10A and an arm 50 extending toward the other mounting portion 10B at four locations separated in the longitudinal direction thereof, respectively. An extending arm 50 is provided as a set. The lower end of each arm 50 is rotatably connected to the main shaft 40, and the upper end is rotatably connected to the vertical rail 20A.

With this configuration, when the mounting bases (a pair of mounting portions 10A and 10B) are bent as described above, the two paired arms 50 rotate in opposite directions in conjunction with the bending, and the angles formed by each other (the angles formed by the two arms 50). Opening angle) changes. For example, as is clear from the side (to be exact, in the direction of the rotation center line X) as shown in FIG. 4, the opening angle of the two arms 50 becomes smaller as the mounting table bends. Along with this, the position of the rotation mechanism portion 60 of the mounting table becomes higher.

That is, in the present embodiment, the mounting table is changed from a deployed state in which a pair of mounting portions 10A and 10B are deployed so as to form one surface to a bent state in which a chevron shape with the rotation mechanism portion 60 as a top is formed. Transforms with. Then, in conjunction with such bending of the mounting table, the mounting table holding portion (main shaft 40, arm 50) moves the rotating mechanism portion 60, which is the bending portion of the mounting table, to a position higher than the deployed state. By moving the ends of the pair of mounting portions 10A and 10B on the opposite side of the rotating mechanism portion 60 to a position lower than the deployed state, the inclination angle of the solar cell arrays 80A and 80B is increased. ing.

A guide mechanism for guiding the sub-shaft 61 with respect to the main shaft 40 is provided between the sub-shaft 61 whose height changes as the mounting table is bent and the main shaft 40. That is, as shown in FIGS. 1 to 4, long guide bars 62 (guide members) made of square steel are rotatably attached to both ends of the sub-shaft 61, and are substantially vertically downward. It is extending.

On the other hand, a square tubular guide rail 63 having a rectangular cross section through which the guide bar 62 can be inserted is attached to the end of the main shaft 40, and the guide bar 62 inserted therein can be slid in the vertical direction. Supports. As a result, as described above, when the arm 50 rotates in conjunction with the bending of the mounting table and the height of the mounting table (that is, the height of the sub-shaft 61 and the rotating mechanism unit 60) changes, the guide By limiting the movement of the guide bar 62 only in the height direction by the rail 63, the movement of the sub-shaft 61 to which the guide bar 62 is connected is also restricted, and the movement in the height direction is stabilized.

The guide rail 63 is not always necessary. For example, the guide bar 62 is formed with a linear groove along the longitudinal direction, and the end of the main shaft 40 is provided with a convex portion that can be inserted into the above-mentioned groove. The movement of the guide bar 62 may be restricted in the height direction by the portion. Further, even if the end portion of the main shaft 40 is not provided with a special structure, a linear groove provided in the guide bar 62 along the longitudinal direction allows the end portion of the main shaft 40 to be inserted as it is. You may.

-Operation of solar cell mount 1-
Hereinafter, the operation of the solar cell mount 1 will be described mainly with reference to FIG. Although FIGS. 4A to 4C are side views of the solar cell mount 1, changes in the positions of the pair of mounting portions 10A and 10B and the pair of arms 50 due to the bending of the mounting base can be easily seen. In addition, the solar cell mount 1 is viewed not in the horizontal direction but in the direction of the rotation center line X of the mounting portions 10A and 10B.

First, in the normal period excluding the snowfall period, as shown in FIG. 4A, the solar cell pedestal 1 is in the deployed state, and the pair of mounting portions 10A and 10B and the solar cell arrays 80A and 80B are held in a flat plate shape. .. This makes it possible to receive light most efficiently. At this time, the opening angle of the two paired arms 50 is maximized.

When the mounting table is bent from the unfolded state and folded so that the pair of mounting portions 10A and 10B form a chevron shape with the sub-shaft 61 at the top, two pairs are formed as shown in FIG. 4 (b). The opening angle of the arm 50 of the arm 50 becomes smaller, and the position of the vertical rail 20A connected to the upper end portion thereof becomes higher. As a result, the main shaft 40 and the arm 50 move the position of the rotation mechanism portion 60 of the mounting table to a position higher than the unfolded state shown in FIG. 4A.

Then, as shown in FIG. 4C, during the snowfall season, the mounting bases (a pair of mounting portions 10A and 10B) are bent to the maximum, and the solar cell mount 1 is put into a folded state. By doing so, the position of the rotation mechanism portion 60 becomes the highest, so that the pair of mounting portions 10A and 10B form a steeper chevron shape as compared with FIG. 4B, and the opening angles of the two paired arms 50 are formed. Is minimized. As a result, the inclination angles of the solar cell arrays 80A and 80B mounted on the pair of mounting portions 10A and 10B, respectively, become large, which makes it easy for the snow falling on the solar cell panel to slide down.

Further, by increasing the inclination angle of the solar cell arrays 80A and 80B in this way, the light receiving surface of the solar cell panel becomes liable to receive the reflected light from the ground, so that the snow accumulated around the solar cell pedestal 1 The solar cell arrays 80A and 80B can easily receive the scattered light from the solar cells. By using the scattered light for power generation in this way, the amount of power generation can be increased.

Therefore, in the present embodiment, as an example, a state in which the inclination angle is about 80 ° is set as a folded state of the solar cell pedestal 1 (a state in which the mounting table is bent to the maximum), and the solar cell pedestal 1 is folded in the snowfall season. The inclination angle is not limited to that, and can be arbitrarily selected in the range of, for example, 60 ° to 90 ° (vertical). The larger the tilt angle, the more the influence of snowfall can be suppressed, and the smaller the tilt angle, the more direct sunlight from the sun can be received, so that the amount of power generation when there is no snowfall can be increased.

-Installation of power conditioner-
As described above, the solar cell mount 1 of the present embodiment is in a folded state during the snowfall season, and the pair of mounting portions 10A and 10B are bent to the maximum, and the inclination angle of the light receiving surface of the solar cell arrays 80A and 80B is increased. Is set to about 80 °. As a result, even if snow is piled up on the surrounding ground, it becomes difficult for snow to be piled up on the solar cell arrays 80A and 80B, so that power can be generated for a longer period of time. The period during which current flows through the power conditioner (hereinafter, also referred to as PCS) connected to the 80B can be lengthened.

In the present embodiment, a so-called distributed photovoltaic power generation system is constructed by installing relatively small-capacity PCSs at a ratio of about 1 in 10 to 20 of the solar cell mount 1. In addition, for example, a junction box, a current collector box, etc. may be installed on the solar cell stand 1, but in an area with a large amount of snowfall, a PCS storage box, a junction box, a current collector box, etc. may be installed on the accumulated snow. The question is where to install it so that it will not be buried.

That is, in the case of PCS, for example, if the storage box is buried in snow and the exhaust port of the cooling fan is blocked, proper ventilation cannot be performed and heat tends to be trapped, which may cause malfunction due to heat. There is. In addition, the heat may melt the snow around the storage box and turn it into water, which may enter the storage box, which may cause various problems such as electric leakage and corrosion. Needless to say, if the storage box is buried in snow, maintenance will be hindered.

In consideration of such an actual situation, the inventor of the present invention installed the above-mentioned foldable solar cell pedestal 1 in an area where the amount of snowfall is actually large, and as a result of repeating experiments and studies, the foldable solar cell pedestal 1 was folded into a mountain shape. It was found that the stand (a pair of mounting portions 10A and 10B) effectively functions as a snow shield. That is, as will be described later with reference to FIGS. 6 and 7, snow does not fall below the pair of folded mounting portions 10A and 10B, and a cavity-like space S is formed.

Based on this knowledge, in the present embodiment, for example, as shown in FIGS. 5 to 7, a PCS storage box 70 (which may be a connection box or a current collector box) is folded into a mounting table (a pair of mounting portions 10A). , 10B), they are installed so as to be covered by the pair of mounting portions 10A and 10B when viewed from above. Note that FIG. 5 is a perspective view of the solar cell pedestal 1 showing the installation state of the PCS by omitting a part of the solar cell panel, and FIGS. It is a figure and a side view.

As shown in each of these figures, in the present embodiment, the storage box 70 of the PCS has a horizontally long rectangular parallelepiped shape, and is suspended by two stays 71 extending downward from the main shaft 40. Each of these two stays 71 is a combination of a pair of strip-shaped iron plates, and the upper ends thereof are overlapped and fastened to the side surfaces of the main shaft 40 at two positions separated from each other in the longitudinal direction.

At the lower end of the stay 71 extending downward from the main shaft 40, the pair of iron plates are bent in opposite directions to form an L shape, and the bent portions are overlapped with the ceiling surface of the PCS storage box 70. Has been signed. The two stays 71 that suspend the storage box 70 in this way constitute an installation portion of the PCS provided on the main shaft 40 (mounting base holding portion).

As is clear from FIG. 6, the storage box 70 of the PCS is installed so that the bottom surface thereof has a predetermined distance H (for example, about 30 cm) from the ground. By installing the storage box 70 sufficiently away from the ground in this way, even if a small amount of snow accumulates or frost falls, the storage box 70 is less likely to be affected by rust or the like. In addition, a space for wiring and maintenance of the PCS can be secured. For the same reason, a predetermined interval D is also provided between the storage box 70 and the support column 30.

Further, in the present embodiment, the storage box 70 is installed below the cross rail 20B in the pair of folded mounting portions 10A and 10B. Then, as is clear from FIGS. 5 and 7, the cross rail 20B covers the upper part of the storage box 70, and blows through the gap between the pair of mounting portions 10A and 10B together with the main shaft 40 located further above. The snow is blocked so that it does not accumulate in the storage box 70.

That is, as shown in FIG. 7 when the solar cell mount 1 is viewed from the side, the pair of mounting portions 10A and 10B and the solar cell arrays 80A and 80B form a steep mountain shape in the folded state, and the snow falling on them becomes a steep mountain shape. Although it slides down and forms snow pools on the left and right sides of the figure, there is no snow under the pair of mounting parts 10A and 10B, and the PCS storage box 70 is here so that it will not be buried in the snow. A space S in which the space S can be installed is formed.

As described above with reference to FIG. 4 and the like, the pair of mounting portions 10A and 10B are interlocked with each other when the pair of mounting portions 10A and 10B are bent and folded, and the positions of the rotating mechanism portions 60 are located between the mounting portions. It is configured to get higher. Therefore, even if the lower portions of the pair of mounting portions 10A and 10B extend below the main shaft 40 in the folded state, a space in which the storage box 70 can be installed below the pair of mounting portions 10A and 10B is provided. It can be secured.

Moreover, in order to secure a space below the pair of mounting portions 10A and 10B folded in this way, it is also advantageous that the main shaft 40 is not horizontal as in the present embodiment but is slightly inclined. .. That is, as described above, the main shaft 40 is slightly lower on the south side (right side of FIGS. 2 and 5 and 6) of the support column 30, and on the contrary, slightly higher on the north side (left side of the same). That is, in the case where the distance from the ground is large, a larger space can be secured below the pair of mounting portions 10A and 10B in the folded state as compared with the lower one. Installation is more preferable in terms of workability during maintenance.

In addition, in the present embodiment, the storage box 70 is installed inside the vertical rail 20A at the outermost position of the pair of folded mounting portions 10A and 10B (inside in the longitudinal direction of the main shaft 40). In other words, the positions where the two stays 71 are attached to the main shaft 40 are set so as to be so. A guide bar 62 and a guide rail 63 are provided on the outer side of the vertical rail 20A at the outermost positions.

That is, as is clear from FIG. 6, the storage box 70 of the PCS is installed inside the vertical rail 20A, the guide bar 62, and the guide rail 63 at the outermost positions of the pair of mounting portions 10A and 10B, respectively. , The guide bar 62 and the guide rail 63 are designed to block the snow blown from the side of the gantry. As a result, as shown in FIG. 6 when the solar cell mount 1 is viewed from the front, even if snow is piled up on the side thereof, almost no snow is piled up below the pair of mounting portions 10A and 10B. A space S in which the storage box 70 of the PCS can be installed is formed so as not to be buried in the snow.

As described above, in the photovoltaic cell stand 1 of the present embodiment, first, the pair of mounting portions 10A and 10B are folded to form a steep mountain shape, and the inclination angle of the solar cell arrays 80A and 80B is increased. Therefore, it is possible to suppress snow accumulation on the solar cell arrays 80A and 80B in an area with a large amount of snowfall. Further, when the pair of mounting portions 10A and 10B are bent in a chevron shape, the rotating mechanism portion which is a connecting portion between the pair of mounting portions 10A and 10B is lifted and placed at a high position as the arm 50 rotates. By moving to, even if the tilt angle of the solar cell arrays 80A and 80B is increased, a certain distance can be secured between the lowest position of the down-tilted solar cell array and the ground, and the solar cell arrays 80A and 80B can be moved to. It becomes difficult to be buried in the snow that has accumulated on the ground around the gantry.

Further, since the tilt angle of the solar cell arrays 80A and 80B becomes large, the light receiving surface of the solar cell panel can easily receive the scattered light from the snow accumulated on the ground, so that the scattered light can also be effectively used for power generation. Can be done.

Further, a space S in which snow does not accumulate is formed below the pair of mounting portions 10A and 10B which are folded in this way to form a steep chevron, and by installing the PCS storage box 70 in this space S, it is formed. Will not be buried in the snow. Therefore, the heat exhaust port of the storage box 70 is blocked by snow, and proper ventilation is not possible, so that heat tends to be trapped and malfunctions occur, or the heat melts the snow and water invades the storage box 70. As a result, various problems such as corrosion and electric leakage can be suppressed.

In particular, in the present embodiment, by installing the PCS storage box 70 below the horizontal rail 20B at the lowest position of the pair of mounting portions 10A and 10B having a chevron shape as described above, the pair of mounting portions It is possible to block the snow blown from the upper gap between 10A and 10B. Further, by installing the storage box 70 inside the vertical rail 20A and the guide bar 62 at the outermost positions of the mounting portions 10A and 10B, it is possible to block the snow blown from the side.

In the present embodiment, the PCS is exemplified as the electric device installed in the installation portion, but the electric device adopted in the present invention is not limited to the PCS, and sensors such as a temperature sensor and a humidity sensor are used. , A current collector box or junction box that collects the output of multiple solar cell arrays that are required separately when the PCS does not have a current collection function, and a monitoring device that detects information such as solar cell panel failures and power generation status. Various devices can be adopted, such as security devices and communication devices that transmit such information to the management system of the power plant. Further, among these devices, there are some having a storage box and some having no storage box as in the case of PCS, but the present invention can be applied even when there is no storage box, and moreover, a plurality of the above-mentioned devices can be used. It can also be aggregated and stored in a storage box for installation.

[Embodiment 2]
Other embodiments of the present invention will be described below. For convenience of explanation, the same reference numerals will be added to the members having the same functions as the members described in the first embodiment, and the description thereof will be omitted. First, in the second embodiment, although not shown, the solar cell mount 1 does not include the guide bar 62 and the guide rail 63, thereby reducing the weight and cost. In this case as well, it is preferable that the storage box 70 of the PCS is installed below the horizontal rail 20B at the lowest position and inside the vertical rail 20A at the outermost position, as in the first embodiment.

[Embodiment 3]
In the third embodiment, although not shown, the stay 71 for suspending the PCS storage box 70 is not provided on the main shaft 40 of the solar cell mount 1, and instead, the storage box 70 is supported by a stay extending sideways from the support column 30. doing. Alternatively, or in addition to this, a support member may be provided so as to extend upward from the foundation provided on the ground and support the storage box 70 from below.

[Embodiment 4]
In the fourth embodiment, although not shown, the pair of mounting portions 10A and 10B constituting the mounting base of the solar cell mount 1 has only one horizontal rail 20B, for example, two of the first embodiment. It is arranged at a position between the cross rails 20B and 20C. In this case, the solar cell arrays 80A and 80B are placed on the vertical rail 20A. Alternatively, each mounting portion 10A, 10B may have only one vertical rail 20A, and the solar cell arrays 80A, 80B may be mounted on the horizontal rails 20B, 20C located on the vertical rail 20A.

[Embodiment 5]
The solar cell mount 1 of the first embodiment rotatably connects one end of the vertical rails 20A of the pair of mounting portions 10A and 10B to the sub-shaft 61 to form one rotation mechanism portion 60. However, the present invention is not limited to this, and a plurality of rotation mechanism units 60 may be provided. For example, one rotation mechanism unit 60 may be arranged between the adjacent vertical rails 20A. In this configuration, the mounting table is bent by rotating each of the plurality of solar cell panels separated by the rotation mechanism portion 60 as a boundary.

〔summary〕
The photovoltaic power generation system according to the first aspect of the present invention includes a solar cell mount (1) on which a plurality of solar cell panels (80A, 80B) are mounted, and an electric device (1) to which the solar cell panels are electrically connected. A pair of mounting portions (71) of the PCS) are provided, and the solar cell mounts are mounted on each of the solar cell mounts and rotatably connected to each other by the connecting portion (60). A chevron having a portion (10A, 10B) and a holding portion (40, 50) for holding the pair of mounting portions with respect to the support column (30), and the pair of mounting portions having the connecting portion as a top. It is configured to be foldable so that it bends. Then, the installation portion is provided at a position where the electric device is installed below the pair of mounting portions in a bent state so as to be covered with the solar cell panel and the above-mentioned mounting portion when viewed from above. ing.

According to the photovoltaic power generation system having such a configuration, the pair of mounting portions on which the solar cell panels are mounted on the solar cell mount are configured to be foldable so as to bend in a mountain shape, so that the sun can be used in areas with a large amount of snowfall. Snow accumulation on the battery panel can be suppressed, and by installing an electric device such as a PCS in the space formed below the pair of bent mounting portions, it is buried in the snow. It is possible to effectively suppress the trouble caused by the accident.

The photovoltaic power generation system according to the second aspect of the present invention is configured to install the installation portion in the first aspect in a state where the bottom surface of the electric device is separated from the ground. That is, the installation portion may be provided on, for example, a solar cell mount or the ground, but if it is installed sufficiently away from the ground as described above, rust is unlikely to occur even if a small amount of snow accumulates or frost falls. Become. In addition, a space for wiring and maintenance of electrical equipment can be secured.

In the photovoltaic power generation system according to the third aspect of the present invention, the holding portion of the solar cell pedestal in the second aspect is the main shaft (40) extending in the direction of the rotation center line of the pair of mounting portions, and the main shaft (40). A plurality of arms (50) rotatably connected to the shaft and extending diagonally upward are provided, and an upper end portion of each of the plurality of arms is rotatably connected to the above-described mounting portion. .. Then, the installation unit shall install the electric device below the main shaft. In this way, when the pair of mounting portions are bent, their positions are raised, so that it is easy to secure an installation space for electrical equipment below the main shaft. In addition, the main shaft can block snow from above.

In the photovoltaic power generation system according to the fourth aspect of the present invention, the pair of mounting portions of the solar cell mount according to the third aspect are provided with horizontal rails (20B, 20C) extending in the direction of the rotation center line (X). The vertical rails (20A) intersecting with the vertical rails (20A) are combined in a grid pattern. Then, the installation portion shall install the electric device below the lowest position of the cross rail in the pair of mounting portions in the bent state. In this way, the snow from above can be blocked by the cross rail as well as the main shaft.

In the photovoltaic power generation system according to the fifth aspect of the present invention, the pair of mounting portions of the solar cell pedestal according to the third aspect or the fourth aspect are formed by a cross rail extending in the direction of the rotation center line and a vertical crossing thereof. The structure is such that the crosspieces are combined in a grid pattern. Then, the installation portion installs the electric device inside the outermost position of the vertical rail in the direction of the rotation center line. In this way, the vertical rail can block the snow from the side.

In the photovoltaic power generation system according to the sixth aspect of the present invention, in any one of the third to fifth aspects, a sub-shaft in which a connecting portion of a pair of mounting portions of the solar cell mount is arranged in parallel above the main shaft. (61) is provided, and the pair of mounting portions are rotatably connected to the sub-shaft. Further, a long guide member (62) attached to the end portion of the sub-shaft so as to extend downward is provided, and the guide member is slidably engaged with the end portion of the main shaft.

On that basis, the installation unit shall install the electric device inside the installation unit described in advance of the guide member in the extending direction of the main shaft. In this way, the snow from the side can be blocked by the guide member as well as the vertical rail.

The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and the embodiments obtained by appropriately combining the technical means disclosed in the different embodiments. Is also included in the technical scope of the present invention. Furthermore, new technical features can be formed by combining the technical means disclosed in each embodiment.

This international application claims priority based on Japanese Patent Application No. 2017-168850 filed on September 1, 2017, with reference to the entire contents of Japanese Patent Application No. 2017-168850. Incorporated for this international application.

1 Solar cell stand 10A, 10B A pair of mounting parts (mounting stand)
20A Vertical rail 20B, 20C Horizontal rail 30 Strut 40 Main shaft (Mounting stand holding part: Holding part)
50 Arm part (mounting stand holding part: holding part)
60 Rotation mechanism (connecting part)
61 Sub-shaft 62 Guide bar (guide member)
70 Storage box 71 Stay (installation part)
80A, 80B solar cell array (solar cell panel)
X Rotation center line in the rotation mechanism

Claims (4)

A photovoltaic power generation system including a solar cell mount on which a plurality of solar cell panels are mounted and an installation portion of an electric device to which the solar cell panels are electrically connected.
The solar cell mount holds a pair of mounting portions on which the solar cell panel is mounted and rotatably connected to each other at a connecting portion, and a holding portion that holds the pair of mounting portions with respect to a support column. It is configured to be foldable so that the pair of mounting portions bends in a chevron shape with the connecting portion as the top.
The installation portion is provided at a position where the electric device is installed below the pair of mounting portions in a bent state so as to be covered with the solar cell panel and the above-mentioned mounting portion when viewed from above. ,
The holding portion includes a main shaft extending in the direction of the rotation center line of the pair of mounting portions, and a plurality of arms rotatably connected to the main shaft and extending diagonally upward. Each upper end of the arm is rotatably connected to the previously described placement.
The installation unit installs the electric device below the main shaft.
The connecting portion of the pair of mounting portions includes a sub-shaft arranged in parallel above the main shaft, and the pair of mounting portions is rotatably connected to the sub-shaft .
A long guide member attached to the end of the sub-shaft so as to extend downward is provided.
The guide member is slidably engaged up and down with the end of the main shaft.
The photovoltaic power generation system is characterized in that the installation portion installs the electric device inside the installation portion described in advance of the guide member in the extending direction of the main shaft. The photovoltaic power generation system according to claim 1, wherein the bottom surface of the electric device is installed in the installation portion in a state of being separated from the ground. The pair of mounting portions is a combination of a horizontal rail extending in the direction of the rotation center line of the pair of mounting portions and a vertical rail intersecting the horizontal rail in a grid pattern.
The photovoltaic power generation system according to claim 1 or 2 , wherein the installation portion installs the electric device below the lowest position of the cross rail in the pair of mounting portions in a bent state. .. The pair of mounting portions is a combination of a horizontal rail extending in the direction of the rotation center line of the pair of mounting portions and a vertical rail intersecting the horizontal rail in a grid pattern.
The sun according to any one of claims 1 to 3 , wherein the installation portion installs the electric device inside the outermost position of the vertical rail in the direction of the rotation center line. Photovoltaic system.

Images