JP6598728B2 - Solar cell module and solar cell system - Google Patents

Description

  The present invention relates to a solar cell module and a solar cell system having a solar cell module cooling function.

  The solar cell module is generally configured to include a solar cell panel that is a main body of the solar cell module, and a frame that holds the solar cell panel. The solar battery panel is a plurality of solar cells electrically connected in series or in parallel, a transparent substrate disposed on the light receiving surface side of the solar cell and a substrate disposed on the back surface facing the light receiving surface; It has the structure sealed with resin. The frame is disposed around the solar cell panel via a buffer member disposed at a joint with the solar cell panel. In addition, the frame holds the solar cell panel and constitutes an attachment structure with a construction member for installing the solar cell module at the installation location of the solar cell module such as on the roof.

  It is generally known that solar cell modules using silicon crystal solar cells have a reduced power generation performance due to an increase in temperature. Therefore, Patent Document 1 includes, as a technique for cooling the solar cell module, a power generation panel that can receive power and generate power, and a frame frame that is provided on the outer periphery of the power generation panel and fixes the power generation panel. Disclosed is a power generation heat exchange hybrid panel having a solar cell module, a heat transfer sheet capable of transferring heat, and a heat exchange panel provided on the back side of the heat transfer sheet and having a pipe for circulating a heat medium therein. Has been.

JP 2013-115224 A

  However, according to the above conventional technique, there is a problem that the solar cell module becomes heavy when a metal material having good thermal conductivity is used for the piping of the heat exchange panel. When the solar cell module is heavy, the load for mounting the solar cell module increases. Moreover, when using resin material for piping of the heat exchange panel, since the resin material is not high in heat conductivity, there is a problem that the cooling effect of the solar cell module is lowered.

  This invention is made | formed in view of the above, Comprising: It aims at obtaining the solar cell module with the high cooling effect of a solar cell module, suppressing the increase in the weight of a solar cell module.

In order to solve the above-described problems and achieve the object, a solar cell module according to the present invention includes a solar cell panel having a power generation function for generating electric power by photoelectric conversion, a holding unit that holds the periphery of the solar cell panel, and a holding unit. A holding frame having a side surface portion having an opening extending from the portion to the back surface side opposite to the light receiving surface of the solar cell panel, and a spout for passing the coolant to the back surface of the solar cell panel are provided. A hose provided . The solar cell module includes a base portion fixed to the back surface of the solar cell panel, and a support portion that protrudes from the base portion in a direction away from the back surface of the solar cell panel, and the hose is a support portion. By being fitted, a supporting part that supports the hose between the opposing holding frames is provided on the back surface of the solar cell panel.

  According to the present invention, there is an effect that a solar cell module having a high cooling effect on the solar cell module can be obtained while suppressing an increase in the weight of the solar cell module.

It is a top view which shows the structure of the solar cell module concerning Embodiment 1 of this invention, and is the figure which shows the state which looked at the solar cell module from the light-receiving surface side. It is a top view which shows the structure of the solar cell module concerning Embodiment 1 of this invention, and shows the state which looked at the solar cell module from the back surface side facing a light-receiving surface. FIG. 3 is a main part sectional view showing the configuration of the solar cell module according to the first embodiment of the present invention, and is a main part sectional view taken along line III-III in FIG. 2. It is principal part sectional drawing which shows the structure of the solar cell module concerning Embodiment 1 of this invention, and is principal part sectional drawing along the IV-IV line in FIG. Sectional drawing which shows the structure of the solar cell panel concerning Embodiment 1 of this invention typically Sectional drawing which shows the principal part which shows the dispersion | spreading state of the cooling fluid in the solar cell module concerning Embodiment 1 of this invention typically. Sectional drawing which shows the principal part which shows the state by which the support component was provided in the solar cell module concerning Embodiment 1 of this invention. It is principal part sectional drawing which shows typically the state by which the support component was provided in the solar cell module concerning Embodiment 1 of this invention, and sectional drawing along the VIII-VIII line in FIG. It is a schematic diagram which shows the usage example of the solar cell module concerning Embodiment 1 of this invention, and is a schematic diagram which shows the example by which the solar cell module was installed on the agricultural field. The perspective view which shows typically the solar cell module concerning Embodiment 2 of this invention. It is the top view which shows typically the structure of the solar cell system concerning Embodiment 3 of this invention, and is the top view which looked at the solar cell system from the back surface side The figure which shows the structure of the solar cell system concerning Embodiment 4 of this invention. The figure which shows an example of the hardware constitutions of the processing circuit concerning Embodiment 4 of this invention.

  Below, the solar cell module and solar cell system concerning embodiment of this invention are demonstrated in detail based on drawing. Note that the present invention is not limited to the embodiments.

Embodiment 1 FIG.
FIG. 1 is a plan view showing the configuration of the solar cell module 10 according to the first embodiment of the present invention, and shows a state in which the solar cell module 10 is viewed from the light receiving surface side. FIG. 2 is a plan view illustrating the configuration of the solar cell module 10 according to the first embodiment of the present invention, and is a diagram illustrating a state in which the solar cell module 10 is viewed from the back side facing the light receiving surface. FIG. 3 is a principal part sectional view showing the configuration of the solar cell module 10 according to the first embodiment of the present invention, and is a principal part sectional view taken along line III-III in FIG. 2. FIG. 4 is a main part sectional view showing the configuration of the solar cell module 10 according to the first embodiment of the present invention, and is a main part sectional view taken along line IV-IV in FIG. 2. FIG. 5 is a cross-sectional view of an essential part schematically showing the structure of the solar cell panel 20 according to the first embodiment of the present invention.

  The solar cell module 10 includes a solar cell panel 20 having a power generation function of receiving light from the light receiving surface 20a, a holding frame 30 provided around the solar cell panel 20 and holding the solar cell panel 20, and cooling. A hose 40 for spraying the liquid 42.

  The solar cell panel 20 exhibits a plate-like shape that is a polygonal shape when viewed from the light receiving surface 20a side. In the first embodiment, the solar cell panel 20 has a rectangular shape when viewed from the light receiving surface 20a side, that is, in the surface direction of the solar cell panel 20. The solar cell panel 20 is a photoelectric conversion unit that converts sunlight into electric power by photoelectric conversion, and includes a plurality of solar cells 21 arranged in a grid pattern. The solar battery cell 21 has a rectangular shape in the surface direction of the solar battery cell 21. In FIG. 2, illustration of the solar battery cell 21 is omitted for easy understanding of the drawing.

  The solar cell panel 20 includes a light-receiving surface side protection unit 22 made of a glass substrate which is a light-transmitting insulating substrate disposed on the light-receiving surface side of the solar cell panel 20 and a light-transmitting surface disposed on the back surface side facing the light-receiving surface. A plurality of solar cells 21 that are electrically connected in series or in parallel are arranged between the backside protection part 23 made of a glass substrate that is a conductive insulating substrate. The plurality of solar cells 21 are regularly arranged in a lattice shape in the surface direction of the back surface side protection portion 23 in a state of being separated. And the several photovoltaic cell 21 is electrically connected by the interconnector 25 which is an electroconductive connection member.

  Further, the plurality of solar cells 21 are sealed in a sealing portion 24 made of an electrically insulating material sandwiched between the light receiving surface side protection portion 22 and the back surface side protection portion 23. As the electrical insulating material, a light-transmitting material such as ethylene-vinyl acetate (EVA) resin or polyethylene terephthalate (PET) resin is used. In the solar cell panel 20, the light L enters from the light receiving surface side protection part 22 side.

  The interconnector 25 is made of a conductive material, and is formed on the light receiving surface electrode 21 a formed on the light receiving surface of one solar cell 21 and on the back surface of another solar cell 21 adjacent to the solar cell 21. The back electrode 21b is joined with solder. FIG. 5 shows a state in which the adjacent solar cells 21 are electrically connected in series by the interconnector 25.

  The holding frame 30 is provided on each side of the solar cell panel 20 having a polygonal shape. As shown in FIG. 1, one holding frame 30 is provided for one side of the solar cell panel 20. That is, the holding frame 30 can be divided into two pairs of frame members and four frame members, and each frame member is provided on the outer peripheral portion of the solar cell panel 20 to hold the solar cell panel 20.

  The holding frame 30 has a lower side part 31 provided with a space between the back surface 20 b of the solar cell panel 20. The lower side portion 31 faces the outer peripheral edge portion 20c extending along one side of the solar cell panel 20 in the back surface 20b. 3 and 4, the direction from the lower side 31 toward the solar cell panel 20 is the upward direction, the direction from the outer peripheral edge 20 c of the back surface 20 b toward the one side of the solar cell panel 20 is the outer direction, and the outer direction. The opposite direction is the inside direction.

  As shown in FIGS. 3 and 4, the holding frame 30 has a rising side portion 32 that is a side portion extending from the lower side portion 31 toward the outer peripheral edge portion 20 c of the back surface 20 b of the solar cell panel 20. Here, the lower side portion 31 projects inward from the rising side portion 32 with respect to the rising side portion 32. The lower side portion 31 may have a portion that protrudes outward from the rising side portion 32. Further, the holding frame 30 has an opening 32 a through which the hose 40 is inserted in the rising side portion 32 as shown in FIG. 4. The opening 32 a is provided in a region in the middle between the upper end and the lower end of the rising side portion 32 so as to penetrate in the thickness direction. One opening 32a or a plurality of openings 32a are provided at intervals in the longitudinal direction of the holding frame 30.

  A holding portion 33 that holds one side of the solar cell panel 20 is formed at an end portion on the solar cell panel 20 side of the rising side portion 32. In addition, the edge part of the standing | starting-up side part 32 in which the holding | maintenance part 33 is formed is called an upper end. The holding portion 33 includes an inner projecting upper side portion 33a projecting inward from the upper end of the rising side portion 32, and an upper extending portion 33b extending upward from the upper end of the rising side portion 32, that is, outside the inner projecting upper side portion 33a. And a sandwiching part 33c that extends inward from the upwardly extending part 33b and sandwiches the solar cell panel 20 between the inner projecting upper side part 33a. Therefore, the rising side portion 32 which is a side surface portion has an opening 32a, and a direction intersecting the in-plane direction of the solar cell panel 20 from the holding portion 33 toward the back surface 20b facing the light receiving surface 20a of the solar cell panel 20. It extends to.

  In the solar cell module 10 according to the first embodiment, the coolant 42 is introduced into the opening 32 a provided in the rising side portion 32 of the holding frame 30 that faces the solar cell panel 20 in the surface direction of the solar cell panel 20. A hose 40 for spraying is inserted. The hose 40 is supported by being inserted through an opening 32 a provided in the holding frame 30.

  FIG. 6 is a cross-sectional view of a principal part schematically showing a sprayed state of the coolant 42 in the solar cell module 10 according to the first embodiment of the present invention. The hose 40 is provided with a plurality of spray ports 41 for spraying the coolant 42 in the hose 40 toward the back surface 20b of the solar cell panel 20 on the surface facing the back surface 20b of the solar cell panel 20. The hose 40 is supplied with a coolant 42 from a coolant supply unit 71 described later. Thereby, the solar cell module 10 can directly spray the coolant 42 supplied from the coolant supply unit 71 from the spray port 41 toward the back surface 20b of the solar cell panel 20, and the cooling sprayed from the spray port 41. With the liquid 42, the solar cell panel 20 can be cooled from the back surface 20b side. That is, the solar cell module 10 has a function of spraying the coolant 42 that can spray the coolant 42 directly toward the back surface 20 b of the solar cell panel 20, and has a cooling function of cooling the solar cell panel 20.

  For the hose 40, rubber or resin material such as rubber hose or vinyl chloride pipe can be used. By using rubber or a resin material for the material of the hose 40, the hose 40 can be reduced in weight and cost compared to the case of using a metal material. Further, as shown in FIGS. 1 and 2, the hose 40 is disposed so as to cross the back surface 20b of the solar cell panel 20 a plurality of times, so that the coolant 42 is scattered from the hose 40 on the back surface 20b of the solar cell panel 20. Can be widened. That is, the hose 40 is disposed so that the protruding portion protruding from the back surface 20b side of the solar cell panel 20 to the outside of the holding frame 30 is folded back and disposed again from the holding frame 30 to the back surface 20b side of the solar cell panel 20. It is preferable that the region corresponding to the back surface 20b of the panel 20 is reciprocated and more preferably a plurality of times. Thereby, the cooling range of the solar cell panel 20 by the coolant 42 can be expanded, and the cooling effect of the solar cell panel 20 by the coolant 42 is further improved. And it is preferable that the cooling range of the solar cell panel 20 by the coolant 42 covers the arrangement area of all the solar cells 21 included in the solar cell panel 20 in the plane of the solar cell panel 20. Thereby, the cooling effect of the solar cell panel 20 by the coolant 42 is further improved.

  As the coolant 42, water that is easily available and inexpensive can be used. The cooling liquid 42 is not limited to water.

  FIG. 7: is principal part sectional drawing which shows typically the state by which the support component 43 was provided in the solar cell module 10 concerning Embodiment 1 of this invention. FIG. 8 is a main part sectional view schematically showing a state in which the support component 43 is provided in the solar cell module 10 according to the first embodiment of the present invention, and a sectional view taken along the line VIII-VIII in FIG. 7. It is. The hose 40 is supported by the openings 32a of the two holding frames 30 facing each other through the solar cell panel 20 in the surface direction of the solar cell module 10, and supports the hose 40 as shown in FIGS. It is preferable to arrange the support component 43 on the back surface 20b side of the solar cell panel 20.

  The support component 43 is provided with a support portion 43b protruding from a flat base portion 40a. The base portion 40 a is fixed to the back surface 20 b of the solar cell panel 20. The fixing method of the base | substrate part 40a is not specifically limited, For example, an adhesive agent can be used. One or a plurality of support parts 43 are arranged at arbitrary positions between the holding frames 30 facing each other on the back surface 20b of the solar cell panel 20 so that the support parts 43b are located below the base part 40a. The support portion 43b has a cross-sectional inner surface shape that follows the cross-sectional outer surface shape of the hose 40, and has an annular shape with a part opened. The support component 43 supports the hose 40 between the holding frames 30 facing each other through the insertion of the hose 40 by fitting the hose 40 into the support portion 43b.

  By providing the support component 43, even when the support interval of the hose 40 becomes long, that is, when the distance between the holding frames 30 facing each other through the insertion of the hose 40 becomes long, the hose 40 is not bent and the hose 40 is not bent. The hose 40 can be supported by suppressing the movement of the hose 40 due to the pressure of the coolant 42 flowing through the tank 40. Moreover, the distance of the back surface 20b of the solar cell panel 20 and the spraying port 41 can be adjusted by adjusting the distance of the support part 43b from the back surface 20b of the solar cell panel 20.

  Further, when the vertical length of the rising side portion 32 of the holding frame 30 is long, the distance between the spray port 41 and the back surface 20b of the solar cell panel 20 is set in advance at the rising side portion 32 when the holding frame 30 is manufactured. Adjustment is possible by changing the position of the opening 32a. Further, the momentum of the coolant 42 sprayed from the spray port 41 toward the back surface 20b of the solar battery panel 20 adjusts the coolant pressure supplied from the coolant supply unit 71 to the hose 40, or the spray port 41 It can be adjusted by adjusting the size. Further, by adjusting the size and shape of the spray port 41, it is possible to spray the coolant 42 in the form of a mist.

  FIG. 9 is a schematic diagram illustrating a usage example of the solar cell module 10 according to the first embodiment of the present invention, and is a schematic diagram illustrating an example in which the solar cell module 10 is installed on the farm ground. In the example shown in FIG. 9, a plurality of solar cell modules 10 shown in the first embodiment are installed using the installation component 50 in a state of being separated upward from the farmland.

  The solar cell module 10 has a spraying function of the coolant 42 as described above. For this reason, the solar cell module 10 is installed on the farm ground as shown in FIG. 9 and water is used as the cooling liquid 42 to cool the solar cell module 10 by being sprayed from the spray port 41 of the hose 40. The water which is the liquid 42 pours onto the farmland crops. Thereby, the solar cell module 10 can have a function of supplying water to the agricultural crops. Here, the hose 40 can further enhance the water supply function to the crop by appropriately adjusting the arrangement in the in-plane direction of the solar cell module 10 according to the positional relationship with the crop.

  In addition, when the solar cell module 10 is installed on the farmland where the solar cell module 10 is installed, another spraying port for spraying water on the farmland crops that are the lower region of the solar cell module 10 is the solar cell panel 20 in the hose 40. It may be provided on the surface not facing the back surface 20b. Since sunlight falls from the area around the solar cell module 10 and the area between the solar cell modules 10 to the crops on the farmland, it is possible to ensure solar radiation on the crops.

  As described above, the solar cell module 10 according to the first embodiment includes the hose 40 having the spray port 41 on the back surface 20b side of the solar cell panel 20, thereby directly supplying the coolant 42 to the solar cell panel 20. It can be spread on the back surface 20b, and the coolant 42 can directly cool the back surface 20b of the solar cell panel 20. Thereby, the solar cell module 10 has a cooling function with a high cooling effect. For this reason, the solar cell module 10 has a higher cooling effect than the case where the solar cell panel 20 is cooled through the pipe using the heat exchange panel in which the heat medium is circulated inside the pipe.

  Moreover, the solar cell module 10 can easily attach the spraying function of the coolant 42 by simply inserting the hose 40 into the opening 32a in the rising side portion 32 of the holding frame 30 when the solar cell module 10 is installed. The spraying function of the coolant 42 can be realized with a simple structure. Moreover, since the cooling mechanism of the solar cell module 10 does not need to circulate the cooling liquid 42, replacement of the cooling liquid 42 and complicated maintenance are not necessary, and the maintainability is excellent. By using water as the coolant 42, an increase in cost due to the coolant 42 can be suppressed, and an inexpensive running cost can be realized.

  Further, by using a hose 40 made of rubber or a resin material as a member constituting the conveyance path of the cooling liquid 42, the solar cell module 10 can be compared with a case where a metal material is used as a member constituting the conveyance path of the cooling liquid 42. The increase in weight can be suppressed, and the solar cell module 10 can be realized at low cost. By suppressing the increase in the weight of the solar cell module 10 by the hose 40, it is possible to suppress an increase in load when the solar cell module 10 is attached.

  Therefore, the solar cell module 10 according to the first embodiment can realize a solar cell module having a cooling function with a high cooling effect while suppressing an increase in weight and cost of the solar cell module 10.

Embodiment 2. FIG.
FIG. 10 is a perspective view schematically showing the solar cell module 11 according to the second embodiment of the present invention. Solar cell module 11 in the second embodiment is a modification of solar cell module 10 shown in the first embodiment, and has a configuration in which solar cells 21 are partially removed from solar cell panel 20. That is, in the solar cell panel 20, the solar cells 21 are not arranged in the plane of the solar cell panel 20, and light incident from the light receiving surface 20 a of the solar cell panel 20 is transmitted to the back surface 20 b of the solar cell panel 20. A window portion having translucency. Since the solar cell 21 is not disposed in the window portion, the window portion has a configuration in which the sealing portion 24 is laminated between the light receiving surface side protection portion 22 and the back surface side protection portion 23.

  In the solar cell module 11, the solar cell 21 is partially removed from the state in which the solar cells 21 are arranged in a lattice shape as shown in FIG. That is, the solar cells 21 are not arranged in a part of the lattice shape that is the array shape of the solar cells 21. Thereby, when the solar cell module 11 is installed and used in the state spaced apart upward from the farmland as shown in FIG. 9, it can adjust the amount of solar radiation to the crop. The water spray from the hose 40 of the solar cell module 11 should just cool the solar cell 21 which is an electric power generation element. Therefore, it is sufficient if the hose 40 is disposed only in the region where the solar cells 21 are disposed in the in-plane direction of the back surface side protection part 23, that is, in the in-plane direction of the solar cell module 11. However, you may arrange | position in the area | region where the photovoltaic cell 21 is not arrange | positioned in the in-plane direction of the solar cell module 11. FIG.

  Here, in the solar cell panel 20, the light-receiving surface side protection part 22 arrange | positioned at the light-receiving surface side and the back surface side protection part 23 arrange | positioned at the back surface side are the glass substrates which have translucency. For this reason, in the solar cell module 11, sunlight passes through the light-receiving surface side protection unit 22 and the back surface side protection unit 23 and falls on the crops in the window portion where the solar cells 21 are not disposed. Thereby, the amount of solar radiation to agricultural products can be increased more.

  As described above, in the second embodiment, the solar cell module 11 is installed on the farm ground and water is used as the cooling liquid 42 to cool the solar cell module 11 and supply water to the farmland crops. Is possible. Moreover, the solar radiation amount to a crop can be increased more by installing the solar cell module 11 which has the structure from which the photovoltaic cell 21 was partially removed in the solar cell panel 20 on farm ground.

Embodiment 3 FIG.
FIG. 11 is a plan view schematically showing the configuration of the solar cell system 60 according to the third embodiment of the present invention, and is a plan view of the solar cell system 60 viewed from the back side. In the solar cell system 60 according to the third embodiment, a plurality of solar cell modules 10 having the same configuration align the longitudinal direction of each solar cell module 10 in the same direction and align the short direction in the same direction. Are arranged in a grid on the same plane. In the solar cell system 60, a plurality of solar cell modules 10, a solar cell module 101, a solar cell module 102, a solar cell module 103, are arranged in a lattice shape, and the hose 40 of each solar cell module 10 is connected in series. Has been. In addition, in FIG. 11, illustration of the photovoltaic cell 21 is abbreviate | omitted in order to make a figure legible. The solar cell module 101 is located on one end side of the plurality of solar cell modules 10 to which the hose 40 is connected in series.

  One end of a hose 401 that is the hose 40 held by the holding frame 30 of the solar cell module 101 is connected to a coolant supply unit 71 (not shown). The other end of the hose 401 held by the holding frame 30 of the solar cell module 101 and one end of the hose 402 that is the hose 40 held by the holding frame 30 of the solar cell module 102 adjacent to the solar cell module 101 are solar The solar cell module 101 and the solar cell module 102 are connected by a connection hose 44 in a region that does not overlap the solar cell module 101 and the solar cell module 102 in the surface direction of the battery module 101.

  Similarly, the other end of the hose 402 that is the hose 40 held by the holding frame 30 of the solar cell module 102 and the hose that is the hose 40 held by the holding frame 30 of the solar cell module 103 adjacent to the solar cell module 102. One end of 403 is connected by a connection hose 44 in a region that does not overlap the solar cell module 102 and the solar cell module 103 in the surface direction of the solar cell module 102. Similarly, the other end of the hose 40 of the other solar cell module 10 and the one end of the hose 40 of the adjacent solar cell module 10 are connected by the connection hose 44, so that the hoses 40 of the plurality of solar cell modules 10 are connected. Connected in series. The other end of the hose 40 of the solar cell module 10 located on the other end side among the plurality of solar cell modules 10 to which the hose 40 is connected in series is sealed. Since there is no solar cell module 10 above the connection hose 44, the connection hose 44 is not provided with the spout 41.

  In the solar cell module 101, a hose 401 is disposed from the lower left side to the upper right side in FIG. On the other hand, in the solar cell module 102, a hose 402 is disposed from the lower right side to the upper left side in FIG. That is, in the solar cell module 101, one end of the hose 401 protrudes from the holding frame 30 on the lower left side of the solar cell module 101 on the paper surface of FIG. An end protrudes from the holding frame 30 to the outside. On the other hand, in the solar cell module 102, one end of the hose 402 protrudes from the holding frame 30 on the lower right side of the solar cell module 102 on the paper surface of FIG. An end protrudes from the holding frame 30 to the outside. Therefore, the solar cell module 101 and the solar cell module 102 have the same basic structure, but the arrangement of the hose 40 is different.

  As described above, the solar cell modules 101 and 102 having different arrangements of the hose 40 include the long side facing the solar cell module 102 in the solar cell module 101 in the short side direction of the solar cell module 10 of the solar cell system 60, and the sun. In the battery module 102, it arrange | positions by the positional relationship which becomes line symmetrical with respect to the centerline C1 between the long sides which oppose the solar cell module 101. FIG. That is, the solar cell module 101 and the solar cell module 102 are opposed to the other end of the hose 401 protruding from the holding frame 30 of the solar cell module 101 and the one end of the hose 402 protruding from the holding frame 30 of the solar cell module 102. It is arranged at the position to do.

  Further, the solar cell modules 102 and 103 having different arrangements of the hose 40 include a long side facing the solar cell module 103 in the solar cell module 102 in the short side direction of the solar cell module 10 of the solar cell system 60, and a solar cell module. In 103, it arrange | positions by the positional relationship which becomes line symmetrical with respect to the centerline C2 between the long sides which oppose the solar cell module 102. FIG. That is, the solar cell module 102 and the solar cell module 103 are opposed to the other end of the hose 402 protruding from the holding frame 30 of the solar cell module 102 and one end of the hose 403 protruding from the holding frame 30 of the solar cell module 103. It is arranged at the position to do.

  That is, the two solar cell modules 10 adjacent in the connecting direction of the hose 40 include the other end of the hose 40 protruding from the holding frame 30 facing the other solar cell module in one solar cell module, and the other solar cell module. The one end of the hose 40 that protrudes from the holding frame 30 that faces one of the solar cell modules has the same position along the longitudinal direction of the holding frame 30 from which the hose 40 protrudes.

  Thereby, the length of the connection hose 44 can be shortened, the connection between the hoses 40 of the adjacent solar cell modules 10 can be facilitated, and interference with other parts other than the connection part in the hose 40 can be prevented. It can be avoided.

  In addition, although the example which connects all the hose 40 of the several solar cell module 10 arranged in the grid | lattice form in the above was shown in series, in FIG. 11, only the solar cell module 10 adjacent in the vertical direction of a paper surface is connected in series. However, the hoses 40 may be connected in parallel for a row of solar cell modules 10 adjacent to each other in the horizontal direction of the paper in FIG. 11 and in which the hoses 40 are connected in series in the vertical direction.

  Moreover, in the above, the hose 40 was provided for every solar cell module 10, and the example which connected between the hose 40 of the adjacent solar cell module 10 with the connection hose 44 was shown, However, One solar hose 40 is adjacent to the sun. You may pass through the opening 32a of the holding frame 30 of the battery module 10 in order. In this case, after disposing the hose 40 on all the solar cell modules 10, the spray port 41 may be provided at a position facing the back surface 20 b of each solar cell module 10 in the hose 40. Thereby, the hose 40 and the connection hose 44 in each solar cell module 10 can be integrally comprised by one hose, and the installation work of the connection hose 44 and the connection hose 44 becomes unnecessary.

  As described above, the solar cell system 60 according to the third embodiment is cooled while suppressing the increase in weight and cost by connecting the hoses 40 of the plurality of solar cell modules 10 by the connection hose 44. A solar cell system 60 having a highly effective cooling function can be realized.

Embodiment 4 FIG.
FIG. 12 is a diagram showing a configuration of a solar cell system 70 according to the fourth embodiment of the present invention. The solar cell system 70 according to the fourth embodiment includes a solar cell module 10, a coolant supply unit 71 that stores a coolant 42 that is supplied to the hose 40 of the solar cell module 10, and a solar cell from the coolant supply unit 71. The pump 72 that is a power source for transporting the coolant 42 to the hose 40 of the module 10, the transport hose 73 that connects the hose 40 of the solar cell module 10 and the coolant supply unit 71, and the power generation amount of the solar cell module 10 A power generation amount measuring unit 74 for measuring and a control unit 75 for controlling the supply of the coolant 42 by the pump 72 are provided. The pump 72 and the control unit 75 and the power generation amount measuring unit 74 and the control unit 75 can communicate with each other.

  The material of the transport hose 73 is not particularly limited, and various materials such as rubber and resin materials can be used.

  The power generation amount measuring unit 74 measures the power generation amount of the solar cell module 10 and transmits the measurement result to the control unit 75. The power generation amount measuring unit 74 can be realized by providing a dedicated configuration unit, or by transmitting the power generation amount of the solar cell module 10 to the control unit 75 from, for example, a power conditioner connected to the solar cell module 10.

  The control unit 75 controls the driving of the pump 72 based on the power generation amount of the solar cell module 10 measured by the power generation amount measurement unit 74, and the coolant from the coolant supply unit 71 to the hose 40 of the solar cell module 10. The on / off of the supply of 42 and the supply amount of the coolant 42 are controlled. The control unit 75 compares the current power generation amount of the solar cell module 10 with the preset scattering reference power generation amount of the solar cell module 10 at a preset cycle. The distribution reference power generation amount is a reference value for determining whether or not to supply the coolant 42 to the hose 40 of the solar cell module 10 and is stored in the control unit 75 in advance. And the control part 75 controls the drive of the pump 72, when it determines with the present electric power generation amount of the solar cell module 10 being larger than the dispersion | distribution reference | standard electric power generation amount, and the solar cell module 10 of the cooling liquid supply part 71 is controlled. The supply of the coolant 42 to the hose 40 is controlled.

  The control unit 75 is realized, for example, as a processing circuit having the hardware configuration shown in FIG. FIG. 13 is a diagram illustrating an example of a hardware configuration of a processing circuit according to the fourth embodiment of the present invention. When the control unit 75 is realized by the processing circuit illustrated in FIG. 13, the control unit 75 is realized by, for example, executing the program stored in the memory 202 by the processor 201 illustrated in FIG. 13. A plurality of processors and a plurality of memories may cooperate to realize the above function. Further, a part of the function of the control unit 75 may be mounted as an electronic circuit, and the other part may be realized using the processor 201 and the memory 202.

  The solar cell module 10, more specifically, the solar cell panel 20, when the amount of solar radiation increases, the amount of power generation increases, and at the same time, the temperature rises due to solar radiation. That is, when the power generation amount of the solar cell module 10 increases, the cooling liquid 42 is sprayed from the hose 40 to the back surface 20b of the solar cell panel 20, thereby suppressing the temperature rise of the solar cell panel 20 and improving the power generation efficiency. Can be made. Moreover, the usage-amount of the coolant 42 can be reduced by spraying the cooling liquid 42 on the back surface 20b of the solar cell panel 20 only when the power generation amount is larger than the spraying reference power generation amount.

  Note that the number of solar cell modules 10 included in the solar cell system 70 according to the fourth embodiment may be one, and a plurality of solar cell modules 10 are electrically connected as shown in the third embodiment, and The hose 40 may be configured to be connected. In the case of a configuration in which a plurality of solar cell modules 10 are connected, the power generation amount measuring unit 74 measures the total power generation amount of the connected plurality of solar cell modules 10.

  As described above, the solar cell system 70 according to the fourth embodiment includes the solar cell module 10, the coolant supply unit 71, the transport hose 73, the pump 72, the power generation amount measurement unit 74, and the control unit 75. With. Thereby, the solar cell system 70 according to the fourth embodiment can automatically spray the coolant 42 on the solar cell module 10, and can automatically cool the solar cell module 10 to improve the power generation efficiency. it can.

  The configuration described in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and can be combined with other configurations without departing from the gist of the present invention. The part can be omitted or changed.

  10, 11, 101, 102, 103 Solar cell module, 20 Solar cell panel, 20a Light-receiving surface, 20b Back surface, 20c Outer periphery, 21 Solar cell, 22 Light-receiving surface side protection unit, 23 Back surface side protection unit, 24 Seal Stopping part, 25 interconnector, 30 holding frame, 31 lower side part, 32 rising side part, 32a opening, 33 holding part, 33a inner projecting upper side part, 33b upper extension part, 33c clamping part, 40, 401, 402, 403 Hose, 40a Base part, 41 Spray port, 42 Coolant, 43 Support part, 43b Support part, 44 Connection hose, 50 Installation part, 60, 70 Solar cell system, 71 Coolant supply part, 72 Pump, 73 Transport hose, 74 Power generation amount measurement unit, 75 control unit, 201 processor, 202 memory, C1, C2 center line.

Claims (10)

A solar cell panel having a power generation function for generating electricity by photoelectric conversion;
A holding frame having a holding part for holding the periphery of the solar cell panel, and a side part having an opening extending from the holding part to the back side facing the light receiving surface of the solar cell panel;
A hose that is inserted through the opening and provided with a spout for spraying the cooling liquid onto the back surface of the solar cell panel;
With
A base portion fixed to the back surface of the solar cell panel; and a support portion that protrudes from the base portion in a direction away from the back surface of the solar cell panel, and the hose is fitted into the support portion. By providing a supporting part for supporting the hose between the holding frames facing each other on the back surface of the solar cell panel,
A solar cell module characterized by. A solar cell module,
A solar cell panel having a power generation function for generating electricity by photoelectric conversion;
A holding frame having a holding part for holding the periphery of the solar cell panel, and a side part having an opening extending from the holding part to the back side facing the light receiving surface of the solar cell panel;
A hose that is inserted through the opening and provided with a spout for spraying the cooling liquid onto the back surface of the solar cell panel;
With
Including another spraying port for spraying the coolant in a lower region of the solar cell module in a state where the solar cell module is installed at an installation location;
A solar cell module characterized by. The coolant is water;
The solar cell module according to claim 1 or 2. The hose is arranged to cross the back surface of the solar cell panel a plurality of times,
The solar cell module according to any one of claims 1 to 3, wherein: The solar cell panel is
A light-receiving surface side protection portion that is disposed on the light-receiving surface side of the solar cell panel and is made of a translucent insulating substrate;
A back-side protection part made of a translucent insulating substrate disposed on the back side facing the light-receiving surface of the solar cell panel;
A plurality of solar cells arranged and sealed in the surface direction of the light receiving surface side protection portion between the light receiving surface side protection portion and the back surface side protection portion;
With
The solar cell panel has a window portion having translucency;
The solar cell module according to claim 4. The hose is disposed on a back surface of the solar battery cell;
The solar cell module according to claim 5. A plurality of the solar cell modules according to any one of claims 1 to 6, wherein the hoses of the adjacent solar cell modules are connected by a connection hose,
A solar cell system characterized by The solar cell module according to any one of claims 1 to 6,
A coolant supply section for storing the coolant supplied to the hose of the solar cell module;
A pump for conveying the coolant from the coolant supply to the hose;
A transport hose connecting the hose and the coolant supply unit;
A solar cell system comprising: A power generation amount measuring unit for measuring the power generation amount of the solar cell module;
A controller for controlling the supply of the coolant by the pump;
The solar cell system according to claim 8, comprising: A plurality of the solar cell modules are electrically connected and arranged, and the hoses of the adjacent solar cell modules are connected by a connection hose,
The power generation amount measuring unit measures the power generation amount of the connected solar cell modules as a whole;
The solar cell system according to claim 9.

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