JP5374467B2 - Pavement block and solar power generation system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pavement block for hardly applying loads of pedestrians or the like to a photovoltaic power generation element and a photovoltaic power generation system including the pavement block. <P>SOLUTION: A pavement block 10A includes: a pavement block body 1; a plurality of protective members 2 installed at an interval from each other on the upper surface of the pavement block 1; and the photovoltaic power generation element 3 installed on the upper surface of the pavement block body 1 between the protective members 2 adjacent to each other, for receiving sunlight and generating power. The upper surface 2a of the protective member 2 is positioned above the upper surface 3a of the photovoltaic power generation element 3. <P>COPYRIGHT: (C)2012,JPO&amp;INPIT

Description

  The present invention relates to a paving block and a photovoltaic power generation system.

  In recent years, solar power generation that uses semi-permanent energy such as sunlight, which does not generate carbon dioxide at the time of power generation, has attracted attention due to increasing interest in global warming problems and fossil fuel depletion problems. Photovoltaic power generation is used in various places. For example, Patent Document 1 discloses an invention in which a photovoltaic power generation element is installed on a paving block that forms a paved surface such as a sidewalk, a park square, and a garden road. It is disclosed.

Japanese Patent Laid-Open No. 6-118887

  However, in the invention described in Patent Document 1, the upper surface of the photovoltaic power generation element is exposed from the upper surface of the paving block and is flush with the upper surface of the paving block. A pedestrian or bicycle passing by may come into contact with the solar power generation element, and the load of the pedestrian or the like is likely to be applied to the solar power generation element, which may cause damage to the solar power generation element.

The present invention has been developed from such a viewpoint, and an object of the present invention is to provide a paving block in which a load of a pedestrian or the like is not easily applied to a photovoltaic power generation element.
It is another object of the present invention to provide a solar power generation system including the paving block.

The paving block according to the present invention includes the paving block main body, the plurality of protective members installed on the upper surface of the paving block main body at intervals, and the adjacent protective member. A solar power generation element installed on the upper surface of the main body and receiving sunlight to generate electric power, wherein the upper surface of the protective member is located above the upper surface of the solar power generation element And further comprising a power transmission terminal for transmitting the power generated by the photovoltaic power generation element to another adjacent paving block, the power transmission terminal being provided on one side surface of the paving block main body. A positive electrode is installed, and a negative electrode is installed on the side surface opposite to the one side surface.

  According to this configuration, the solar power generation element is installed between the adjacent protection members, and the upper surface of the protection member is positioned above the upper surface of the solar power generation element, so that a pedestrian or the like can generate solar power generation. Since it becomes easier to contact the protective member than the element, a load of a pedestrian or the like is easily applied to the protective member, and is difficult to apply to the photovoltaic power generation element.

The present invention further includes a power transmission terminal for transmitting the power generated by the photovoltaic power generation element to another adjacent pavement block, the power transmission terminal of the pavement block main body. It is on one side the cathode installation, the negative electrode that is disposed on the side surface opposite to the side surface of the one.

  According to this configuration, when laying a plurality of paving blocks, it is not necessary to connect the power lines for collecting the generated power to each paving block, so the number of power lines to be used is reduced. The installation space can be reduced.

  Further, the solar cell device further includes a covering member that is installed on the upper surface of the solar power generation element and formed of a material that transmits sunlight, and the upper surface of the protective member is configured to be located above the upper surface of the covering member. It is preferable to do this.

  According to this configuration, the solar power generation element can receive sunlight while protecting the solar power generation element from rain, dust, and the like. Moreover, it becomes difficult for a pedestrian etc. to contact a solar power generation element.

A solar power generation system according to the present invention is a solar cell unit configured by arranging a plurality of paving blocks according to claim 1 or claim 2 and the solar power generation element of the solar cell unit generates power. Conversion means for converting DC power into AC power and supplying the power to a load and / or a commercial power system.

  According to such a configuration, it is possible to realize solar power generation that effectively uses a sidewalk or the like by arranging a plurality of paving blocks including solar power generation elements in parallel to form a solar cell unit.

  ADVANTAGE OF THE INVENTION According to this invention, the solar power generation system provided with the block for paving which the load of a pedestrian etc. cannot apply to a solar power generation element, and the said block for paving can be provided.

It is a schematic block diagram of the solar energy power generation system provided with the paving block which concerns on embodiment of this invention. It is a perspective view of the block for paving which concerns on embodiment. It is a side view of the block for paving which concerns on embodiment. It is the XX sectional view taken on the line of FIG. It is a perspective view of the block for paving which concerns on a modification.

DESCRIPTION OF EMBODIMENTS Preferred embodiments of the present invention will be described in detail with reference to the drawings. In the following description, the same reference numerals are used for the same elements, and duplicate descriptions are omitted.
In addition, although this embodiment demonstrates the case where the paving block of this invention is applied to a sidewalk, the intended purpose of the paving block is not limited.

FIG. 1 is a schematic configuration diagram of a photovoltaic power generation system including a paving block according to an embodiment of the present invention.
As shown in FIG. 1, the photovoltaic power generation system PS includes a solar cell unit 10, a conversion unit 20, a power storage unit 30, a distribution board 40, a load 50, a commercial power system 60, and power lines 70 a to 70 i. And a backflow prevention diode 80 are mainly provided.
The sidewalk S is mainly composed of the solar cell unit 10 and a plurality of curbs C and C that are spaced apart from each other in the lateral direction (the width direction of the sidewalk S).

  The solar cell unit 10 has a function of receiving sunlight and generating power. The solar cell unit 10 is configured by arranging a plurality of paving blocks 10A and 10A side by side in the vertical and horizontal directions. The pavement block 10A of the solar cell unit 10 is connected in series in the same column in the vertical direction (the length direction of the sidewalk S), and the power line 70a- is connected to the pavement block 10A located at the end of each column. 70d are connected to each other. The plurality of power lines 70a to 70d are combined into a single power line 70e by a connection box (not shown). The detailed configuration of the paving block 10A will be described later.

  The conversion means 20 has a function of converting DC power generated by the solar cell unit 10 into AC power and supplying the AC power to the load 50 and the commercial power system 60. The conversion means 20 is comprised by the power conditioner, an inverter, etc., for example, and is connected to the solar cell unit 10 via power line 70a-70e.

  The power storage means 30 has a function of storing the generated power. The electric power stored in the electric storage means 30 is used at night or when the commercial power system 60 fails. The power storage means 30 is composed of, for example, an electric double layer capacitor or a secondary battery, and is connected to the solar cell unit 10 via power lines 70a to 70f.

  The distribution board 40 serves as a node between the conversion means 20 and the commercial power system 60, and generates a load 50 (for example, an indoor or outdoor electrical device) from the generated power or the power transmitted from the commercial power system 60. It has the function to distribute to. Distribution board 40 is connected to conversion means 20, load 50, and commercial power system 60 via power lines 70g-70i, respectively.

  The backflow prevention diode 80 has a function of preventing the power sent to the conversion means 20 or the power stored in the power storage means 30 from flowing back to the solar cell unit 10. The backflow prevention diode 80 is installed between the solar cell unit 10 and the conversion means 20 and the power storage means 30. In addition, an overvoltage protection circuit that shuts off power storage when the voltage sent from the solar cell unit 10 exceeds the allowable voltage of the power storage means 30 may be installed at an appropriate place in the solar power generation system PS. A voltage stabilization circuit that keeps the stored voltage constant at all times may be provided.

2 is a perspective view of the paving block according to the embodiment, FIG. 3 is a side view of the paving block according to the embodiment, and FIG. 4 is a sectional view taken along line XX of FIG.
As shown in FIG. 2, the paving block 10 </ b> A includes a paving block main body 1, a plurality of protective members 2 and 2 installed on the upper surface of the paving block main body 1 at intervals, and an adjacent protective member 2. , 2, a plurality of photovoltaic power generation elements 3, 3 installed on the upper surface of the paving block main body 1, and a plurality of covering members 4, 4 installed along the upper surface 3 a of the photovoltaic power generation element 3, It mainly includes power transmission terminals 5 (see FIG. 4) installed on both side surfaces of the paving block main body 1.

  The paving block main body 1 is a concrete member for supporting the protective member 2, the solar power generation element 3, and the like. The pavement block main body 1 of the present embodiment has a rectangular shape in plan view, but may be formed in, for example, a square shape in plan view, a parallelogram shape, a rhombus shape, a triangular shape, or the like.

  The protection member 2 is a concrete member for preventing a load of a pedestrian, a bicycle, or the like from being applied to the photovoltaic power generation element 3. The protection member 2 has a wall shape, and is installed at equal intervals along the longitudinal direction (one direction) of the paving block main body 1. As shown in FIG. 3, the upper surface 2 a of the protection member 2 is located above the upper surface 3 a of the photovoltaic power generation element 3 and the upper surface 4 a of the covering member 4. In addition, you may set suitably the space | interval G (refer FIG. 3) of the adjacent protection members 2 and 2, for example, it is preferable to set in the range of 10 mm-100 mm, More preferably, it is set to 50 mm or less. Good. Moreover, the number, width dimension, etc. of the protection member 2 may be set as appropriate, and the protection member 2 may be configured integrally or separately from the paving block main body 1.

  The photovoltaic power generation element 3 is a member that receives sunlight to generate power. The photovoltaic power generation element 3 can be appropriately selected from known photovoltaic power generation elements whose photoelectric conversion layer is made of, for example, a silicon-based semiconductor layer, a compound-based semiconductor layer, or an organic-based semiconductor layer. The photovoltaic power generation elements 3 and the protection members 2 are alternately installed along the longitudinal direction of the paving block main body 1.

  The covering member 4 is a member for protecting the solar power generation element 3 from rain, dust, and the like and preventing a pedestrian, a bicycle, and the like from coming into contact with the solar power generation element 3. The covering member 4 is formed of a material that transmits sunlight, such as glass, tempered glass, acrylic resin, polycarbonate resin, and epoxy resin.

  The electric power transmission terminal 5 is a member for transmitting electric power to another paving block 10A disposed adjacent thereto. As shown in FIGS. 2 and 4, the power transmission terminals 5 are installed on both side surfaces of the paving block main body 1 in the short direction, the positive electrode 5 a is installed on one side surface, and the opposite side to the one side surface. The negative electrode 5b is installed on the side surface of the. The power transmission terminal 5 is connected to the photovoltaic power generation element 3 through a conducting wire 6. Further, the paving blocks 10A and 10A in the same row in the vertical direction are arranged side by side so that the power transmission terminals 5 and 5 are in contact with each other.

  The paving block 10A according to the embodiment of the present invention is basically configured as described above. Next, with reference to FIG. 1 to FIG. 4, the paving block 10A according to the present embodiment. The operation of the photovoltaic power generation system PS having the above will be described.

  First, when the solar cell unit 10 receives sunlight, electric power is generated from the solar power generation element 3 of each paving block 10A. Then, the generated electric power is transmitted to another adjacent pavement block 10A via the conductor 6 and the power transmission terminal 5 (see FIGS. 1 and 4). In the present embodiment, the generated power is transmitted in the vertical direction (the direction indicated by the white arrow in FIG. 1).

A part of the generated power is stored in the power storage means 30 through the power lines 70a to 70f. The electric power stored in the power storage means 30 is supplied to street lamps and the like installed along the sidewalk S at night, for example.
A part of the generated power is sent to the conversion means 20 and the distribution board 40 through the power lines 70a to 70e and 70g, and then supplied to the load 50 through the power line 70h. The surplus power may be sold to an electric power company through the commercial power system 60.

  According to the paving block 10 </ b> A according to the present embodiment described above, the solar power generation element 3 is installed between the adjacent protection members 2, 2, and the upper surface 2 a of the protection member 2 is the solar power generation element 3. Since the pedestrian, the bicycle, and the like are easier to contact the protective member 2 than the solar power generation element 3 and the covering member 4 by being positioned above the upper surface 3a and the upper surface 4a of the covering member 4, the load of the pedestrian, etc. Is more likely to be added to the protective member 2 and less likely to be added to the solar power generation element 3.

  Moreover, by providing the power transmission terminal 5 for transmitting the power generated by the photovoltaic power generation element 3 to another adjacent pavement block 10A, a power line for collecting the generated power is provided for each pavement. Since it is not necessary to connect to each block 10A, the number of power lines to be used can be reduced and the installation space can be reduced.

  Further, the covering member 4 formed of a material that transmits sunlight is installed on the upper surface 3a of the solar power generation element 3, thereby protecting the solar power generation element 3 from rain, dust, etc. The element 3 can receive sunlight. Moreover, it becomes difficult for a pedestrian etc. to contact the solar power generation element 3. FIG.

  Furthermore, according to the solar power generation system PS provided with the paving block 10A according to the present embodiment, it is possible to realize solar power generation that effectively uses the sidewalk S composed of a plurality of paving blocks 10A, 10A. .

As mentioned above, although preferred embodiment was described about this invention, this invention is not limited to the said embodiment, A design change is possible suitably in the range which does not deviate from the meaning of this invention.
In the present embodiment, the paving block 10A of the present invention is applied to the sidewalk S. However, the present invention is not limited to this, and may be applied to, for example, a passage, a road, a park square, and a garden road.

  Moreover, although the pavement block 10A of this embodiment is connected in series for every same row in the vertical direction, the present invention is not limited to this, and may be connected in series for every same row in the horizontal direction, for example. In this case, the power transmission terminals 5 are installed on both side surfaces in the longitudinal direction of the paving block main body 1.

  Moreover, although the protection member 2, the photovoltaic power generation element 3, and the coating | coated member 4 of this embodiment are extended so that it may become parallel to a vertical direction, it is not limited to this, It cross | intersects a vertical direction ( It may extend so as to be orthogonal.

  Moreover, in this embodiment, although the protection member 2 is formed along the transversal direction of the block main body 1 for paving, it is not limited to this, For example, it forms in the grid | lattice form as shown in FIG. May be. That is, the protection member 2 includes a plurality of first protection parts 21 and 21 extending along the short direction of the pavement block main body 1, and intersects (orthogonally) the first protection parts 21 and 21 to provide a pavement block. You may comprise from the 2nd protection parts 22 and 22 extended along the longitudinal direction of the main body 1. FIG. According to such a configuration, it is possible to prevent a pedestrian's foot, a bicycle wheel, or the like from entering between the adjacent first protection portions 21 and 21, so that a load on the pedestrian or the like is further applied to the photovoltaic power generation element 3. It becomes difficult. In addition, you may set suitably the space | interval of the adjacent 1st protection parts 21 and 21, the space | interval of the adjacent 2nd protection parts 22 and 22, the number of 1st protection parts 21 and the 2nd protection parts 22, a width dimension, etc. .

  Moreover, in this embodiment, although the several photovoltaic power generation element 3 was installed, it is not limited to this, Between a pair of protection members 2 and 2 installed at intervals, a single The structure which installs the photovoltaic device 3 may be sufficient.

  Moreover, in this embodiment, although the coating | coated member 4 was installed, it is not limited to this, The coating | coated member 4 may be abbreviate | omitted.

  Further, the solar power generation system PS including the paving block 10A according to the present embodiment includes the power storage unit 30, but is not limited thereto, and the power storage unit 30 may be omitted.

PS Photovoltaic power generation system 10 Solar cell unit 10A Pavement block 1 Pavement block main body 2 Protective member 2a Upper surface 3 Photovoltaic power generation element 3a Upper surface 4 Cover member 4a Upper surface 5 Power transmission terminal 5a Positive electrode 5b Negative electrode 6 Conductor 20 Conversion means 30 Power storage Means 40 Distribution board 50 Load 60 Commercial power system 70a-70i Power line 80 Backflow prevention diode S Sidewalk C Curb G G Interval

Claims (3)

Paving block body,
A plurality of protective members installed on the upper surface of the paving block main body at intervals, and
Between the adjacent protection members, installed on the upper surface of the paving block main body, a solar power generation element that receives sunlight to generate power, and
A paving block comprising
The upper surface of the protective member is located above the upper surface of the photovoltaic element ,
A power transmission terminal for transmitting the power generated by the solar power generation element to another paving block disposed adjacent thereto;
The power transmission terminal has a positive electrode on one side of the pavement block main body and a negative electrode on a side opposite to the one side . It further includes a covering member that is installed on the upper surface of the solar power generation element and formed of a material that transmits sunlight,
The upper surface of the protective member, paving block according to claim 1, characterized in that located above the upper surface of the covering member. A solar cell unit configured by arranging a plurality of the paving blocks according to claim 1 or 2 ;
A solar power generation system, comprising: conversion means for converting direct current power generated by the solar power generation element of the solar cell unit into alternating current power and supplying the alternating current power to a load and / or a commercial power system.

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