JP2005240352A - Solar battery module and roof with solar battery - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a solar battery module for effectively suppressing temperature rise due to solar light irradiation while keeping the area of a solar battery array as large as possible. <P>SOLUTION: A surface panel 5 in which solar battery cells 7 are arrayed is in a polygonal shape with at least one apex having an acute inner angle. A cutout 2 as a vent hole is formed in the apex portion having the acute inner angle. A heat radiating chamber communicated with the vent hole for ventilation is formed all over the lower face of the surface panel 5. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a solar cell module that is installed on a roof of a building and generates power using sunlight energy.

  As this type of solar cell module, the one described in Patent Document 1 is conventionally known. FIG. 16 is a cross-sectional view and a plan view of the solar cell module described in Patent Document 1. The solar cell module 100 has a substantially square frame body 101. Support legs 102 are provided at four corners of the frame body 101.

  In addition, a square support plate 103 having a cord hole (not shown) opened at the center is provided in a portion surrounded by the frame body 101. A solar cell array 104 in which a large number of solar cells are arranged in series and parallel is fixed on the support plate 103. The solar cell array 104 has a square shape that is substantially the same type and size as the support plate 103.

  The frame body 101 is fixed at a distance from the roof surface by the four support legs 102. The space between the roof surface and the frame body 101 can be ventilated. Arc-shaped notches 105 are formed at the center of the four outer sides of the frame 101. This notch 105 functions as a ventilation opening.

  FIG. 17 is a diagram illustrating a state in which the solar cell module of FIG. 16 is spread on the roof surface. As shown in FIG. 17, each solar cell module 100 is spread on the roof surface in a state in which the sides are in contact with each other. Moreover, the notch parts 105 of the adjacent solar cell modules 100 are combined with each other to form one ventilation port.

By comprising in this way, a ventilation opening is formed in various places of the combined solar cell module 100 assembly. Solar cell module 100 heated by solar heat radiates heat to the air in the space between the lower surface of solar cell module 100 and the roof surface. The air in the gap is heated and becomes warm. And this warm air is discharged | emitted outside through the said ventilation hole formed in various places. Therefore, the cooling efficiency of the solar cell module 100 is improved and the temperature rise is suppressed. Thereby, the fall of the power generation efficiency of the photovoltaic cell by a temperature rise decreases.
JP 2001-85728 A

  By the way, in the solar cell module 100 as shown in FIG. 16, when the ventilation efficiency when installed on the roof surface is increased to suppress the temperature rise of the solar cell module 100, the notch portion 105 needs to be enlarged. . By the way, in order to increase the area of the notch 105, the width of the frame 101 must be increased. However, when the width of the frame body 101 is increased, it is necessary to reduce the area of the solar cell array 104 accordingly. As a result, the power generation efficiency per unit area of the solar cell module 100 including the surface area of the frame 101 is lowered.

  On the other hand, if the notch part 105 is made small, ventilation efficiency will fall and the effect which suppresses the temperature rise of the solar cell module 100 by sunlight irradiation will also become low. Accordingly, the power generation efficiency of each solar battery cell is lowered, and as a result, the power generation efficiency per unit area of the solar battery module 100 is lowered.

  As described above, in the conventional solar cell module 100, the area of the solar cell array 104 and the temperature rise suppressing effect of the solar cell module 100 are in a contradictory relationship, so the power generation efficiency per unit area of the solar cell module 100 is reduced. There is a limit to raising it.

  In addition, in the solar cell module actually used at present, the width of the upper surface of the frame is often about 10 mm. Thus, at present, in order to enlarge the area of the solar cell array as much as possible, the width of the upper surface of the frame body is made as narrow as possible. Therefore, when the notch is formed in the frame having such a narrow width, the strength of the frame is lowered. In addition, the width of the notch is narrowed and the ventilation efficiency is also lowered.

  Accordingly, an object of the present invention is to provide a solar cell module that can ensure the area of the solar cell array as large as possible and at the same time effectively suppress the temperature rise due to sunlight irradiation.

  According to the first configuration of the solar cell module according to the present invention, the shape of the surface panel in which the solar cells are arranged is a polygonal shape in which the inner angle of at least one vertex is an acute angle, and the inner angle is an acute angle. A notch or vent hole, which is a ventilation port, is formed at a certain apex portion.

  According to this configuration, the number of solar cells that can be spread on the solar cell module by providing a ventilation port is reduced by using an acute-angled apex portion where a solar cell cannot be originally arranged as a ventilation port. Never do. Moreover, the air on the back surface of the front panel of the solar cell module is ventilated through the ventilation port. Therefore, heated air does not collect on the back surface of the front panel. Therefore, the solar cells arranged on the front panel do not become high temperature, and a decrease in power generation efficiency due to a temperature rise can be suppressed.

  According to the 2nd structure of the solar cell module which concerns on this invention, in the said 1st structure, the thermal radiation room which can be ventilated by communicating with the said ventilation hole is formed over the whole lower surface of the said surface panel. And

  According to this configuration, when the front panel is heated by sunlight irradiation, the heat is also radiated to the heat radiating chamber below the front panel. The warm air in the heat radiating chamber is released to the atmosphere through the ventilation port. Therefore, since the cooling efficiency of the surface panel is increased, the solar cell module maintains high power generation efficiency.

  According to the second configuration of the solar cell module according to the present invention, in the first or second configuration, the surface panel has notches or passages that are ventilation openings at a pair of opposed apex portions whose inner angles are acute angles. It is characterized by being formed in a parallelogram shape having pores.

  Thus, if the shape of a solar cell module is made into a parallelogram shape, the pasting efficiency at the time of laying a solar cell module on the roof which has corner buildings, such as a ridge building, a main building, and one way, can be made high. Further, similarly to the case described above, the warm air on the lower surface of the solar cell module is ventilated from the cutout portion (or the vent hole portion). Therefore, the overall power generation efficiency of the solar cell array configured by combining the solar cell modules can be further improved.

  According to the third configuration of the solar cell module according to the present invention, in the first or second configuration, the surface panel has a notch or a vent hole that is a ventilation opening at at least two apex portions whose inner angles are acute angles. It is formed in the triangle shape formed.

  Thus, if the shape of the solar cell module is triangular, in combination with the parallelogram solar cell module or the rectangular solar cell module, the roof having corner ridges such as a ridge, a main building, and one-way The pasting efficiency when laying down the solar cell modules can be increased. Further, similarly to the case described above, the warm air on the lower surface of the solar cell module is ventilated from the cutout portion (or the vent hole portion). Therefore, the overall power generation efficiency of the solar cell array configured by combining the solar cell modules can be further improved.

  According to the fourth configuration of the solar cell module according to the present invention, in the first or second configuration, the surface panel has a notch that is a ventilation opening at two apex portions at both ends of the lower side whose inner angle is an acute angle. It is formed in the trapezoid shape in which the vent hole was formed.

  Thus, if the shape of the solar cell module is a trapezoidal shape, it is combined with the parallelogram solar cell module or the rectangular solar cell module to form a roof having corner ridges such as a ridge, a main building, and a one-way street. The pasting efficiency when laying down the solar cell modules can be increased. Further, similarly to the case described above, the warm air on the lower surface of the solar cell module is ventilated from the cutout portion (or the vent hole portion). Therefore, the overall power generation efficiency of the solar cell array configured by combining the solar cell modules can be further improved.

  According to the first configuration of the roof with solar cells according to the present invention, the shape of the surface panel on which the solar cells are arranged is a polygonal shape in which the inner angle of at least one vertex is an acute angle, and the inner angle is an acute angle. A solar cell module in which a notch or vent hole, which is a ventilation port, is formed at the apex portion is filled in the roof surface in a state where a ventable space communicating with the ventilation port is formed on the lower surface of the surface panel. It is characterized by being laid.

  According to this configuration, by using the acute apex portion as a ventilation port, as described above, many solar cells can be spread on the solar cell module, and the warm air on the lower surface of the solar cell module is ventilated to It is possible to suppress the temperature rise of the battery cell. Therefore, a roof with a solar cell with high power generation efficiency can be provided.

  According to the 2nd structure of the roof with a solar cell which concerns on this invention In the said 1st structure, at least one part of the solar cell module laid by the said roof surface has the shape of the said surface panel that an internal angle is an acute angle. A parallelogram solar cell module formed in a parallelogram shape in which a notch or a vent serving as a ventilation opening is formed in a pair of opposed apex portions, wherein the parallelogram solar cell modules are adjacent to each other The right and left sides of the two parallelogram solar cell modules are in contact with each other, and the pair of parallel sides of the parallelogram solar cell module are parallel to the eaves of the roof surface. It is characterized by being arranged in.

  In this way, by spreading the parallelogram-shaped solar cell modules, it is possible to increase the sticking efficiency to a roof having corner buildings such as a wing, a main building, and a one-way street. Further, as described above, many solar cells can be spread on the solar cell module, and the warm air on the lower surface of the solar cell module is ventilated to suppress the temperature rise of the solar cell. Therefore, the overall power generation efficiency of the roof with solar cells can be further improved.

  As described above, according to the solar cell module according to the present invention, the solar cell module that can be spread on the solar cell module by using the acute apex portion where the solar cell can not be disposed as a ventilation port. The number does not decrease. Further, the air on the back surface of the solar battery module is ventilated through the ventilation port, so that the solar battery cell does not reach a high temperature, and a reduction in power generation efficiency due to temperature rise can be suppressed.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  1 is a plan view and a cross-sectional view taken along line AA of a parallelogram solar cell module according to Embodiment 1 of the present invention, and FIG. 2 is a cross-sectional view of the parallelogram solar cell module according to Embodiment 1 of the present invention. It is a perspective view. In addition, FIG.1 (b) represents the AA arrow directional cross-sectional view of Fig.1 (a).

  The solar cell module 1 is formed in a parallelogram shape in plan view, and notches 2 and 2 are formed in a pair of acute angle portions. The periphery of the solar cell module 1 is constituted by a frame 3, and a plurality of vent holes 4 are formed through the side surface of the frame 3. Here, the air holes 4 are also formed on the side surfaces of the notches 2 and 2 of the frame 3.

  The inner upper part of the frame 3 is closed by the surface panel 5. The front panel 5 is connected to the frame at a position lower than the upper surface of the frame 3. And the solar cell array 6 is being fixed so that it may fit in the recessed part comprised by the frame 3 and the surface panel 5. FIG. This solar cell array 6 is an aggregate in which a large number of rectangular solar cells 7 are connected in series and in parallel.

  At the lower part of the front surface panel 5 inside the frame 3, a hollow heat radiation chamber having a lower surface is formed. The heat of the solar cell array 6 heated by the sunlight irradiation is radiated into the heat radiating chamber through the surface panel 5. The heated warm air in the heat radiating chamber is discharged to the outside through the vent hole 4 and ventilated.

  FIG. 3 is a plan view of the triangular solar cell module according to Example 1 of the present invention and a cross-sectional view taken along line AA, and FIG. 4 is a perspective view of the triangular solar cell module according to Example 1 of the present invention. It is. In addition, FIG.3 (b) represents the AA arrow directional cross-sectional view of Fig.3 (a).

  The solar cell module 10 is formed in a triangular shape in plan view, and notches 11, 12, and 12 are formed in three acute angle portions, respectively. This solar cell module 10 is also configured by a frame 13 on the periphery, and a plurality of vent holes 14 are formed through the side surface of the frame 13. Here, the air holes 14 are also formed on the side surfaces of the notches 11, 12, 12 of the frame body 13.

  The inner upper part of the frame 13 is closed by the surface panel 15. The front panel 15 is connected to the frame at a position lower than the upper surface of the frame 13. And the solar cell array 16 is being fixed so that it may fit in the recessed part comprised by the frame 13 and the surface panel 15. FIG. This solar cell array 16 is also an assembly formed by connecting a large number of rectangular solar cells 7 in series and parallel.

  A hollow heat dissipating chamber having a lower surface is formed at the lower portion of the front panel 15 inside the frame 13. The heat of the solar cell array 16 heated by the sunlight irradiation is radiated into the heat radiating chamber through the surface panel 15. The heated warm air in the heat radiating chamber is discharged to the outside through the vent hole 14 and ventilated.

  FIG. 5 is a plan view of the trapezoidal solar cell module according to Example 1 of the present invention and a cross-sectional view taken along line AA, and FIG. 6 is a perspective view of the trapezoidal solar cell module according to Example 1 of the present invention. It is. In addition, FIG.5 (b) represents the AA arrow directional cross-sectional view of Fig.5 (a).

  The solar cell module 20 is formed in a trapezoidal shape in plan view, and notches 21 and 21 are formed in two acute angle portions, respectively. The solar cell module 20 is also configured by a frame 23 on the periphery, and a plurality of vent holes 24 are formed through the side surface of the frame 23. Vent holes 24 are also formed in the side surface of the cutout 21 portion of the frame body 23.

  The inner upper portion of the frame body 23 is closed by the surface panel 25. The front panel 25 is connected to the frame at a position lower than the upper surface of the frame 23. And the solar cell array 26 is being fixed so that it may fit in the recessed part comprised by the frame 23 and the surface panel 25. FIG. This solar cell array 26 is also an assembly formed by connecting a large number of rectangular solar cells 7 in series and parallel.

  A hollow heat dissipating chamber having a lower surface is formed at the lower portion of the front panel 25 inside the frame body 23. The heat of the solar cell array 26 heated by the sunlight irradiation is radiated into the heat radiating chamber through the surface panel 25. The heated warm air in the heat radiating chamber is discharged to the outside through the vent hole 24 and ventilated.

  7 and 8 are views showing a solar cell-attached roof formed by laying the solar cell module according to Example 1 of the present invention on the roof of a building.

  As shown in FIGS. 7 and 8, the roofs 30 and 40 are formed in a rectangular shape with the eaves 31 and 32 facing east and west and the eaves 33 and 34 facing north and south as sides. In the central part of the roof, a land building 35 is formed in parallel with the eaves 33 and 34 of the north and south. This land building 35 is at the highest position. Four corner buildings 36 are formed from both ends of the land building 35 toward the apexes of the four corners of the roof. With these land building 35 and corner building 36 as a boundary, the roof surface facing east and west is Kodaira 37, and the roof surface facing north and south is flat 38.

  7 and 8, solar system modules 1, 10, and 20 are installed on a flat 38 facing south and small flats 37 and 37 facing east and west. The parallelogram-shaped solar cell module 1 installed on each roof surface is installed so that its bottom side and top side are parallel to the eaves. Two solar cell modules 1 adjacent to each other are arranged such that the right oblique side and the left oblique side are connected. The solar cell modules 1 are arranged in a plurality of rows in parallel with the eaves. The solar cell module 10 or the solar cell module 20 is arranged on the right side of the rightmost solar cell module 1. Whether to arrange the solar cell module 10 or the solar cell module 20 is determined in consideration of the size of the roof surface so that as many solar cell modules as possible can be installed.

  Further, the solar cell module 10 of Kodaira 37, 37 uses the solar cell module 10 at a portion closest to the land building 35. If the solar cell module 10 is used at the apex portion as described above, a large number of solar cell modules can be installed in the small flats 37 and 37.

  In the assembly of solar cell modules laid as described above, ventilation openings were formed in various places by the notches 2, 11, 12, and 21 formed in the acute angle portions of the solar cell modules 1, 10, and 20. It becomes a state. Thus, since many ventilation openings are distributed and formed in various places of the aggregate of the solar cell modules, the warm air at the lower part of the solar cell modules 1, 10 and 20 is exhausted upward through the ventilation openings. . Therefore, the heat dissipation efficiency of the solar cell modules 1, 10, and 20 is increased, and the temperature rise due to sunlight irradiation is suppressed. As a result, each solar battery cell 7 is maintained at a relatively low temperature, so that high power generation efficiency can be maintained.

  Moreover, since each solar cell module 1, 10, 20 uses an acute angle portion where the solar cell 7 cannot be installed as a ventilation port, the number of solar cells 7 that can be laid is reduced by providing the ventilation port. There is nothing. Therefore, the area of the solar cell arrays 6, 16, and 26 can be ensured as large as possible, and at the same time, the temperature rise due to sunlight irradiation can be effectively suppressed and high power generation efficiency can be maintained.

  FIG. 9 is a plan view and a cross-sectional view taken along line AA of the parallelogram solar cell module according to Example 2 of the present invention, and FIG. 10 is a diagram of the parallelogram solar cell module according to Example 2 of the present invention. It is a perspective view. In addition, FIG.9 (b) represents the sectional view on the AA arrow line of Fig.9 (a).

  The solar cell module 50 according to the present embodiment has substantially the same shape as the solar cell module 1 shown in FIGS. Accordingly, the same components are denoted by the same reference numerals and description thereof is omitted.

  The solar cell module 50 is different from the solar cell module 1 in that a notch is not formed at an acute angle portion. Instead, ventilation holes 51 and 51 are formed. Even with such a configuration, the same effect as in the first embodiment can be obtained.

  Although only the parallelogram solar cell module 50 has been described here, the same applies to a triangular or trapezoidal solar cell module 50.

  FIG. 11: is the top view and AA arrow directional cross-sectional view of a parallelogram-shaped solar cell module which concerns on Example 3 of this invention. FIG. 12 is a perspective view of a parallelogram solar cell module according to Example 3 of the present invention.

  The solar battery module 60 according to the present embodiment is substantially the same as the solar battery module 1 shown in FIGS. 1 and 2, but in addition to the rectangular solar battery cell 7 as a solar battery cell spread on the upper surface of the front panel 5. This is different in that a right triangular solar cell 61 is used.

  That is, with only the rectangular solar battery cell 7, a large gap can be formed in the oblique side portion of the parallelogram-shaped surface panel 5. Therefore, right-angled triangular solar cells 61 are spread and filled in the gap portion. Thereby, the sticking efficiency of a photovoltaic cell can be made high, and the power generation efficiency of the solar cell module 60 can be improved more.

  In this example, the solar cell module 60 having a parallelogram shape is shown, but the triangular solar cell module as shown in FIGS. 3 and 4 or the trapezoidal solar cell as shown in FIGS. Similarly, with respect to the battery module, the power generation efficiency can be further improved by filling the gaps with the right triangular solar cells 61.

  FIG. 13 is a plan view and a cross-sectional view taken along line AA of the parallelogram solar cell module according to Example 4 of the present invention, and FIG. 14 is a diagram of the parallelogram solar cell module according to Example 4 of the present invention. It is a perspective view. The solar cell module 70 according to the present embodiment has substantially the same form as the solar cell module 60 shown in FIGS. 11 and 12, but a heat radiating chamber surrounded by the frame 3 is formed in the lower part of the surface panel 5. It differs in that the lower surface is flat. Although only the parallelogram-shaped solar cell module is shown in the figure, the triangular or trapezoidal solar cell modules as shown in FIGS. 3 to 6 are configured in the same manner.

  15 is a diagram showing a state in which the solar cell module 70 according to Example 4 of the present invention is installed on the roof surface. When the solar cell module 70 is installed on the roof surface, the vertical beam 81 is fixedly installed at an appropriate interval vertically to the eaves on the roof surface, and the horizontal beam 82 is installed in parallel with the eaves at an appropriate interval on the upper portion thereof. . And the solar cell module 70 is fixedly installed on this upper surface. At this time, as shown in FIG. 15, the solar cell module 70 is installed so that the upper side and the lower side thereof are parallel to the horizontal beam 82. Moreover, it installs so that the hypotenuses of the adjacent solar cell modules 70 and 70 may be connected.

  As a result, a gap is formed in the notch 2, and this becomes the ventilation port 83. If the notch 2 is not provided, if a solar cell module is laid on the horizontal beam 82, the space partitioned by the horizontal beam 82 is filled with warm air, the temperature of the solar cell module rises, and the power generation efficiency decreases. . However, as shown in FIG. 15, by using the solar cell module 70 having the notch 2 and providing the ventilation openings 83 at various places, the lower surface of the solar cell panel 5 has ventilation located above the slope of the roof surface. Warm air is discharged from the opening 83, and cold air flows from the ventilation opening 83 located below the slope of the roof surface. Thereby, the lower surface of the solar cell panel 5 is cooled, and the temperature rise of the solar cell module 70 is suppressed. Therefore, it is possible to maintain high power generation efficiency.

It is the top view and AA arrow sectional drawing of the parallelogram-shaped solar cell module which concerns on Example 1 of this invention. It is a perspective view of the parallelogram-shaped solar cell module which concerns on Example 1 of this invention. It is the top view and AA arrow sectional drawing of the triangular solar cell module which concerns on Example 1 of this invention. It is a perspective view of the triangular solar cell module which concerns on Example 1 of this invention. It is the top view and AA arrow sectional drawing of the trapezoidal solar cell module which concerns on Example 1 of this invention. It is a perspective view of the trapezoidal solar cell module which concerns on Example 1 of this invention. It is a figure showing the roof with a solar cell formed by laying | laying the solar cell module which concerns on Example 1 of this invention on a ridge roof. It is a figure showing the roof with a solar cell formed by laying | laying the solar cell module which concerns on Example 1 of this invention on a ridge roof. It is the top view and AA arrow sectional drawing of the parallelogram-shaped solar cell module which concerns on Example 2 of this invention. It is a perspective view of the parallelogram-shaped solar cell module which concerns on Example 2 of this invention. It is the top view and AA arrow directional cross-sectional view of a parallelogram-shaped solar cell module concerning Example 3 of the present invention. It is a perspective view of the parallelogram-shaped solar cell module which concerns on Example 3 of this invention. It is the top view and AA arrow directional cross-sectional view of a parallelogram-shaped solar cell module which concerns on Example 4 of this invention. It is a perspective view of the parallelogram-shaped solar cell module which concerns on Example 4 of this invention. It is a figure showing the state which installs the solar cell module which concerns on Example 4 of this invention on a roof surface. It is sectional drawing and a top view of a solar cell module given in patent documents 1. It is a figure showing the state which spread | laid the solar cell module of FIG. 16 on the roof surface.

Explanation of symbols

1,10,20,50,60,70 Solar cell module 2,11,12,21 Notch 3,13,23 Frame 4,14,24 Air vent 5,15,25 Surface panel 6,16,26 Sun Battery array 7,61 Solar cell 30,40 Side roof 31,32,33,34 houses 35 Land building 36 Corner building 37 Kodaira 38 Flat 51 Ventilation hole 81 Vertical beam 82 Horizontal beam 83 Ventilation port

Claims (7)

The shape of the surface panel on which the solar cells are arranged is a polygonal shape in which the inner angle of at least one apex is an acute angle, and a notch or a vent hole that is a ventilation opening is formed in the apex portion where the inner angle is an acute angle. A solar cell module characterized by comprising: 2. The solar cell module according to claim 1, wherein a heat dissipating chamber that communicates with and vents to the ventilation port is formed over the entire lower surface of the front panel. The said surface panel is formed in the parallelogram shape by which the notch or ventilation hole which is a ventilation port was formed in a pair of opposing vertex part which an internal angle is an acute angle. Solar cell module. 3. The solar cell according to claim 1, wherein the surface panel is formed in a triangular shape in which a notch or a vent serving as a ventilation opening is formed in at least two apex portions whose inner angles are acute angles. module. The said surface panel is formed in the trapezoid shape by which the notch or ventilation hole which is a ventilating hole was formed in the two vertex parts of the lower edge both ends where an internal angle is an acute angle. Solar cell module. The shape of the surface panel on which the solar cells are arranged is a polygonal shape in which the inner angle of at least one apex is an acute angle, and a notch or a vent hole that is a ventilation opening is formed in the apex portion where the inner angle is an acute angle. The roof with solar cells is characterized in that the solar cell module is filled and laid on the roof surface in a state where an air-permeable space communicating with the ventilation port is formed on the lower surface of the front panel. At least a part of the solar cell module laid on the roof surface has a parallelogram shape in which notches or vent holes serving as ventilation openings are formed at a pair of opposed apex portions where the shape of the surface panel is an acute angle. A parallelogram solar cell module formed on
Each of the parallelogram solar cell modules is in contact with the right oblique side and the left oblique side of two parallelogram solar cell modules adjacent to each other, and the pair of parallel sides of the parallelogram solar cell module is the roof surface. The roof with solar cells according to claim 6, wherein the roof is disposed on the roof surface so as to be parallel to the eaves.

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