JP6017178B2 - Solar cell module mounting structure and solar power generation device - Google Patents

Description

  The present invention relates to a solar cell module mounting structure and a solar power generation apparatus when a solar cell module is mounted on the back side of a sound insulation wall.

  Noise barriers may be installed as incidental facilities on roads such as expressways, automobile roads, and railroad tracks as noise countermeasures in the residential environment. The sound insulation wall is installed along the side portion of the traveling path of an automobile or the like, and suppresses noise generated by the traveling of the automobile or the like, and makes it possible to maintain a favorable residential environment in the vicinity.

  In recent years, the use of natural energy has increased in importance, and the installation of solar cell modules has progressed. However, the installation of a general solar cell module has a problem that it spreads on the horizontal plane and the shielding area of the horizontal plane increases, which causes a problem of plant growth, green space conservation and promotion.

  For this reason, a structure has been proposed in which solar cell modules are arranged so as to be arranged in the vertical direction using sound insulation walls. For example, in Patent Document 1, a sheet-like solar cell module is arranged along the back surface of the sound insulation wall, and is fixed to the back surface of the sound insulation wall by a fixture, and the sheet-like solar cell modules are arranged in a vertical direction. The structure being described is described.

  In Patent Document 2, a concave portion is provided on the back plate, and a panel-type solar cell module is housed and disposed in a concave portion that is inclined upward as the ceiling surface approaches the inlet of the concave portion. A structure is described in which the solar cell modules are connected to the back plate through a pair of spacers so that the angle can be adjusted with a gap, and the solar cell modules are arranged in the vertical direction.

  In Patent Document 3, a pair of locking portions formed on the back surface reinforcing plate of the solar cell module is fitted to a pair of hook-shaped locking portions provided on the sound insulation wall surface, and the solar cell module is attached to the sound insulation wall surface. In addition to fixing, it is disclosed that the solar cell module is fixed at an angle with respect to the sound insulation wall surface. Further, in Patent Document 3, from the viewpoint of power generation efficiency, the angle between the light receiving surface and the vertical surface is about 60 degrees. It is considered preferable to install a solar cell module.

JP 2006-270006 A JP 2011-1720 A JP-A-9-209315

  By the way, in order to receive more sunlight and efficiently generate power, the solar cell module is usually installed with the light receiving surface inclined obliquely, and when installing the solar cell module on the outer surface of the sound insulation wall, It is desirable to install the solar cell module so as to be closer to the sound insulation wall as it goes upward. And installation conditions, such as an inclination angle of this solar cell module, are generally set on the basis of maximizing the amount of received sunlight.

  However, as a result of intensive studies by the inventors of the present application, the solar cell module is partially shaded, and some of the series-connected solar cells constituting the solar cell module do not receive light, and the solar cell does not generate electricity. In such a case, it has been found that the entire solar cell module does not generate power due to the influence of the solar cell that does not generate power. When such a situation occurs in a plurality of solar cell modules, the power generation efficiency of the solar power generation device constituted by the solar cell modules is greatly reduced. Therefore, the shade generated in the solar cell modules should be reduced as much as possible. Is required.

  This invention is proposed in view of the said subject, Comprising: The shade which generate | occur | produces in a solar cell module is suppressed as much as possible, and the high power generation efficiency of the solar power generation device comprised with a solar cell module or a solar cell module is ensured. An object of the present invention is to provide a solar cell module mounting structure that can increase the power that can be used in solar power generation, and a solar power generation apparatus that uses this mounting structure.

In the solar cell module mounting structure of the present invention, solar cell modules in which solar cells are connected in series are vertically arranged on the back side opposite to the traveling path of the sound insulation wall, and each of the solar cell modules is attached. The solar cell module mounting structure is provided to be inclined so as to approach the sound insulating wall as it goes upward, and the upper holding portion fixed to the back side of the sound insulating wall and the upper holding portion are separately held on the lower side. The upper and lower ends of each of the solar cell modules are held respectively, and the upper holding portion is formed so that the amount of protrusion in the outer direction is smaller than the lower holding portion, and is provided side by side vertically. The solar cell module, wherein the lower holding portion of the solar cell module and the upper holding portion of the lower solar cell module are separated and arranged vertically. Together but mounted for adjusting the mutual distance, shade, the upper end the solar cell module from the rotatable electrical provisions region of the light receiving surface that occurs on the light receiving surface of the solar cell module by summer solstice culmination altitude sunlight The solar cell module is set so as to be less than the above.
According to this configuration, the solar cell module has an upper holding portion that has a smaller amount of protrusion in the outward direction than the lower holding portion. By setting the solar cell module so that the shade generated on the light receiving surface of the module is less than the specified area from the upper end of the light receiving surface, the upper part of the light receiving surface of the solar cell module in which the shade is usually higher is higher. By ensuring the light reception corresponding to the sun, the shade generated on the light receiving surface of the solar cell module can be suppressed as much as possible, the generation of solar cells that do not generate power, and the entire solar cell module due to the effect of power generation. The situation of disappearing can be suppressed as much as possible. Therefore, the high power generation efficiency of the solar battery module or the solar power generator configured by the solar battery module can be ensured, and the electric power that can be used for solar power generation can be increased. In addition, stable power generation at the time when the power demand in summer becomes very large can be realized, and the stability of power supply corresponding to the time and time zone when the power demand is high can be improved. In addition, it is possible to attach to the existing sound insulation wall back plate or exterior plate, so that the solar cell module can be installed with good workability and low cost, and the existing sound insulation wall can be used effectively. Can be planned. In addition, the upper holding unit and the lower holding unit are separately provided, and the distance between the upper and lower solar cell modules can be adjusted, so that the distance between the upper and lower solar cell modules is appropriately adjusted as necessary. It is possible to easily attach the solar cell module by setting the shade generated on the light receiving surface of the solar cell module to be less than the prescribed region from the upper end of the light receiving surface. In addition, by adjusting the distance between the top and bottom of the solar cell module to suppress or prevent the shade, the amount of protrusion of the lower holding part, the solar cell module, etc. to the outside of the sound insulation wall is kept within a predetermined range such as within the regulation range. be able to.

In the solar cell module mounting structure of the present invention, the solar cell module is mounted by setting the generated shade so that it remains on a part of the light receiving surface of the solar cell in the uppermost row of the solar cell module. It is characterized by.
According to this configuration, the generated shade is set so as to remain on a part of the light receiving surface of the uppermost solar cell of the solar cell module to secure the power generation of the uppermost solar cell, and the solar cell that does not generate power And the situation in which the entire solar cell module due to the influence of the occurrence of power generation can be prevented more reliably.

In the solar cell module mounting structure of the present invention, solar cell modules in which solar cells are connected in series are vertically arranged on the back side opposite to the traveling path of the sound insulation wall, and each of the solar cell modules is attached. The solar cell module mounting structure is provided to be inclined so as to approach the sound insulating wall as it goes upward, and the upper holding portion fixed to the back side of the sound insulating wall and the upper holding portion are separately held on the lower side. The upper and lower ends of each of the solar cell modules are held respectively, and the upper holding portion is formed so that the amount of protrusion in the outer direction is smaller than the lower holding portion, and is provided side by side vertically. The solar cell module, wherein the lower holding portion of the solar cell module and the upper holding portion of the lower solar cell module are separated and arranged vertically. Together but mounted for adjusting the mutual distance, the shade generated by the summer solstice culmination altitude of sunlight on the light receiving surface of the solar cell module, set so as not to light receiving surface of the solar cell module, wherein A solar cell module is attached.
According to this configuration, the solar cell module has an upper holding portion that has a smaller amount of protrusion in the outward direction than the lower holding portion. By setting the solar cell module so that the shade generated on the light receiving surface of the module does not cover the light receiving surface of the solar cell module, it is possible to increase the sun to a higher altitude with respect to the upper part of the light receiving surface of the solar cell module where the normal shade is generated. It is possible to secure the corresponding light reception, eliminate the shade generated on the light receiving surface of the solar cell module, and prevent the generation of solar cells that do not generate power and the situation where the entire solar cell module does not generate power due to the influence thereof. Therefore, the high power generation efficiency of the solar battery module or the solar power generator configured by the solar battery module can be ensured, and the electric power that can be used for solar power generation can be increased. In addition, stable power generation at the time when the power demand in summer becomes very large can be realized, and the stability of power supply corresponding to the time and time zone when the power demand is high can be improved. In addition, it is possible to attach to the existing sound insulation wall back plate or exterior plate, so that the solar cell module can be installed with good workability and low cost, and the existing sound insulation wall can be used effectively. Can be planned. In addition, the upper holding unit and the lower holding unit are separately provided, and the distance between the upper and lower solar cell modules can be adjusted, so that the distance between the upper and lower solar cell modules is appropriately adjusted as necessary. The solar cell module can be easily attached by setting so that the shade generated on the light receiving surface of the solar cell module is not applied to the light receiving surface. In addition, by adjusting the distance between the top and bottom of the solar cell module to suppress or prevent the shade, the amount of protrusion of the lower holding part, the solar cell module, etc. to the outside of the sound insulation wall is kept within a predetermined range such as within the regulation range. be able to.

Mounting structure of the solar cell module of the present invention, the tip portion extending in a direction along the travel path in the outward direction of the tip of the upper holding portion extends in a direction along the travel path in the outward direction of the distal end of the lower retaining portion It is provided inside the line connecting the tip portion and the upper end of the light receiving surface of the solar cell module held by the upper holding portion directly below the lower holding portion.
According to this configuration, sunlight that can enter the solar cell module without being blocked by the upper lower holding portion can be prevented from being blocked by the upper holding portion that holds the solar cell module. The solar cell module can receive light that is not shielded from light by the lower holding portion located in the position.

The solar power generation device of the present invention is characterized by having at least a part of the solar cell module attached by the solar cell module mounting structure of the present invention.
According to this configuration, it is possible to obtain a solar power generation device that has high power generation efficiency and excellent stability of the amount of power that can be used.

The solar power generation device of the present invention is the above solar power generation device including a power conditioner that converts electric power obtained from a solar cell module from direct current to alternating current and outputs the power conditioner, and the power conditioner is input from the solar cell module. A booster circuit that boosts the DC voltage of the power to be generated; an inverter that converts the boosted power from DC to AC and outputs; and drive control that controls the drive operation by supplying the generated power of the solar cell module as a control power supply And an auxiliary capacitor that temporarily stores the generated power of the solar cell module and supplies auxiliary power when the power conditioner is activated.
According to this configuration, when the power conditioner is started, a large amount of power required for starting the solar cell module can be obtained from both the power generation of the solar cell module and the charge stored in the auxiliary capacitor, and the power generation amount of the solar cell module is small. In addition, the power conditioner can be activated and operated to further increase the power available by solar power generation.

In the solar power generation device of the present invention, the control power of the drive control unit is supplied from a branch between the output side of the solar cell module and the booster circuit, and the output side of the inverter The second control power supplied from the branch between the external system power supplies is selected and supplied according to a predetermined condition.
According to this configuration, the DC power generated by the solar cell module, the AC power output from the power conditioner, and the AC power supplied from the external system power supply are appropriately adjusted and used to operate the power conditioner more continuously. This makes it possible to further increase the power available by solar power generation.

The solar power generation device of the present invention is the above solar power generation device including a solar cell module abnormality detection device, and the abnormality detection device includes a power generation voltage of one solar cell module and a power generation voltage of another solar cell module. And when the power generation voltage of the one solar cell module and the power generation voltage of the other solar cell module are compared with each other, and the comparison result exceeds a predetermined set time when the state outside the allowable range of the predetermined condition, An abnormality detection unit that determines that the solar cell module having the lower power generation voltage is abnormal, and a notification unit that notifies the abnormality of the solar cell module determined to be abnormal.
According to this configuration, the solar power module is relatively shaded by comparing the power generation voltage of one solar cell module with another solar cell module and detecting an abnormality on the condition of a predetermined set time. It is possible to avoid erroneously detecting an abnormality when sunlight for the battery module is temporarily insufficient, and it is possible to detect an abnormality of the solar cell module in which an abnormality has actually occurred. Moreover, in addition to the abnormality which the solar cell module is not generating electric power, the abnormality which the power generation voltage of the solar cell module is falling can also be detected as abnormality. Furthermore, it becomes possible to quickly and surely correct the influence of an abnormal solar cell module on solar power generation, which contributes to an increase in available power by solar power generation.

  According to the solar cell module mounting structure or the solar power generation device of the present invention, with respect to the upper part of the light receiving surface of the solar cell module that is normally shaded, the light reception corresponding to the higher altitude sun is secured, and the solar cell module The shade generated on the light receiving surface can be suppressed or eliminated as much as possible, and the generation of solar cells that do not generate power and the situation where the entire solar cell module does not generate power due to the influence can be suppressed or prevented as much as possible. Therefore, the high power generation efficiency of the solar battery module or the solar power generator configured by the solar battery module can be ensured, and the electric power that can be used for solar power generation can be increased. In addition, stable power generation at the time when the power demand in summer becomes very large can be realized, and the stability of power supply corresponding to the time and time zone when the power demand is high can be improved. In addition, it is possible to attach to the existing sound insulation wall back plate or exterior plate, so that the solar cell module can be installed with good workability and low cost, and the existing sound insulation wall can be used effectively. Can be planned.

  In addition, since the solar cell modules are mounted side by side in the vertical direction on the back side of the sound insulation wall and the spread to the horizontal plane is small, it contributes to good plant growth, green space conservation and promotion, and each of the solar cell modules upwards Since it is provided so as to approach the sound insulation wall as it goes, the solar cell module on the back side of the sound insulation wall, which is often provided at a high position such as a sound insulation wall on an expressway, can suppress glare given to neighboring residents as much as possible. It also contributes to the preservation of the surrounding environment.

The longitudinal cross-sectional view which shows the attachment structure of the solar cell module of 1st Embodiment by this invention. The elements on larger scale of FIG. (A) And (b) is explanatory drawing which shows incidence | injection of sunlight with respect to the solar cell module in the attachment structure of the solar cell module of 1st Embodiment. The block diagram which shows the solar power generation device which has a solar cell module by the attachment structure of 1st Embodiment. The graph which shows the relationship between the shade which arises in a solar cell module, and electric power generation amount. The expanded longitudinal cross-sectional view which shows the attachment structure of the solar cell module of 2nd Embodiment by this invention. The circuit explanatory drawing of the circuit example of a power conditioner. Explanatory drawing which shows the example of a solar cell module and an abnormality detection apparatus. The block diagram of the abnormality detection apparatus of FIG. The flowchart which shows the abnormality detection process in the abnormality detection apparatus of FIG.8 and FIG.9.

[Solar Cell Module Mounting Structure and Solar Power Generation Device of First Embodiment]
A solar cell module mounting structure and a photovoltaic power generation apparatus according to a first embodiment of the present invention will be described.

  The solar cell module mounting structure of the first embodiment, as shown in FIG. 1 and FIG. 2, is a solar cell module 10 mounted side by side in the vertical direction on the back side opposite to the traveling path of the sound insulation wall 600. Each of the solar cell modules 10 is provided so as to be inclined so as to approach the sound insulation wall 600 as it goes upward, and the upper end side and the lower end side thereof are fixed to the back plate or the exterior plate that is the back side of the sound insulation wall 600. It is hold | maintained by the part 20 and the lower side holding | maintenance part 30, respectively.

  In the solar cell module 10, solar cells 11 connected in series are arranged in a matrix in a matrix, and a region where the solar cells 11 are provided is a light receiving surface 12. A non-light-receiving region 13 that is not a light-receiving surface where the solar cells 11 are not provided is provided at the upper and lower edges of the solar cell module 10, and the solar cell module 10 is connected to the upper holding portion 20 in the non-light-receiving region 13. It is held by the lower holding part 30.

  The upper holding part 20 has a substantially trapezoidal cylindrical base body 21 extending in the direction of the travel path, and a groove-like concave part 23 is formed between a pair of holding pieces 22, 22 provided at a predetermined inclination angle from the lower part of the base body 21. A groove-like recess 23 is also formed extending in the direction of the travel path. The recess 23 is fitted with the non-light-receiving region 13 on the upper edge, which is the upper end side of the solar cell module 10, and the upper edge of the solar cell module 10 is held by the recess 23.

  The upper holding portion 20 is provided with a mounting plate 24 that protrudes from the upper portion of the base body 21 in a substantially vertical direction. The mounting plate 24 and the vertical surface 211 of the base body 21 that is continuous with the mounting plate 24 are arranged along the sound insulation wall 600. The upper holding portion 20 is attached to the sound insulation wall 600 by attachments such as bolts 41 and nuts 42 inserted into attachment holes formed in the attachment plate 24.

The upper holding portion 20 is formed to have a smaller protruding amount in the outer direction (the direction opposite to the travel path across the sound insulating wall 600) than the lower holding portion 30 described later. In this example, the base 21 of the upper holding portion 20 is formed. the amount of protrusion of the outer direction of the tip (tip portion extending in a direction along the travel path) is, than the protruding amount of the tip of the outer retaining piece 32 of the lower retaining portion 30 (distal end portion extending in a direction along the travel path) It is set to be small.

Further, in this example, the tip of the tip portion and is base 21 extending along the travel path in the outward direction of the front end of the upper holding portion 20 is, in the direction along the travel path in the outward direction of the front end of the lower holding portion 30 Inward of the line connecting the tip of the holding piece 32, which is the extending tip portion, and the upper end of the light receiving surface 12 of the solar cell module 10 held by the upper holding portion 20 immediately below the lower holding portion 30. Is provided. Thereby, it is possible to prevent the sunlight that can enter the solar cell module 10 without being blocked by the upper lower holding unit 30 from being blocked by the upper holding unit 20 that holds the solar cell module 10. It is possible to ensure that the solar cell module 10 receives sunlight that is not shielded by the lower holding portion 30 located on the upper side.

  Further, an inclined surface 212 that is inclined so as to approach the sound insulation wall 600 as it goes downward is provided between the distal end of the upper holding portion 20 in the outer direction of the base body 21 and the outer holding piece 22 to hold the upper edge. The sunlight is more reliably incident on the light receiving surface 12 of the solar cell module 10.

  The lower holding portion 30 has a substantially triangular cylindrical base 31 extending in the direction of the travel path, and a groove between a pair of holding pieces 32 and 32 protruding at a predetermined inclination angle from the upper portion near the outer front end of the base 31. A concave portion 33 is formed, and the groove-like concave portion 33 is also extended in the direction of the traveling path. A non-light-receiving region 13 on the lower edge, which is the lower end side of the solar cell module 10, is fitted in the recess 33, and the lower edge of the solar cell module 10 is held by the recess 33.

  The lower holding portion 30 is provided with a mounting plate 34 that protrudes in a substantially vertical direction from the lower portion of the base 31, and the inner surface of the mounting plate 34 is located outside the vertical surface 311 of the base 31 of the lower holding portion 30. It is formed to be located. The vertical surface 311 of the base 31 of the lower holding portion 30 is disposed along the sound insulation wall 600, and the mounting plate 34 is disposed in parallel with the back surface of the sound insulation wall 600.

  Except for the lower holding portion 30 attached to the lowermost end, the mounting plate 24 of the upper holding portion 20 is inserted between the mounting plate 34 and the sound insulating wall 600 at the step between the vertical surface 311 and the mounting plate 34. The mounting plate 24 and the mounting plate 34 overlap each other. Then, the lower holding portion 30 is attached to the sound insulation wall 600 by attachments such as bolts 41 and nuts 42 inserted into attachment holes formed at corresponding positions of the attachment plates 24 and 34 arranged in an overlapping manner. Yes. Further, the lower holding portion 30 at the lowermost end is provided with a spacer or the like at a step between the vertical surface 311 and the mounting plate 34 as necessary, and is a bolt inserted into a mounting hole formed in the mounting plate 34. It is attached to the sound insulation wall 600 by attachments such as 41 and nuts 42.

  Furthermore, from the outer end corresponding to the outer surface of the holding piece 32 outside the base 31 of the lower holding portion 30 to the mounting plate 34, an inclined surface 312 is inclined so as to approach the sound insulating wall 600 as it goes downward. In addition, it is possible to ensure later-described irradiation of sunlight on the light receiving surface 12 of the solar cell module 10 disposed below the lower holding portion 30.

  In addition, the upper holding part 20 and the lower holding part 30 that hold the upper edge of the same solar cell module 10 are connected to the upper holding part 20 and the lower holding part 30 via connecting members 43 that are respectively fixed by bolting or the like. The upper holding part 20 and the lower holding part 30 are connected to each other and the upper holding part 20 and the lower holding part 30 are fixed to each other, so that a standardized predetermined separation distance can be easily and reliably between the upper holding part 20 and the lower holding part 30. It is possible to secure it. Further, the concave portion 23 of the upper holding portion 20 and the concave portion 33 of the lower holding portion 30 that are spaced apart from each other by a predetermined distance are arranged at substantially the same inclination angle at corresponding positions. By fitting the battery module 10, the solar cell module 10 is arranged at a predetermined inclination angle.

  In addition, the upper side holding part 20 and the lower side holding part 30 of this embodiment are separate bodies, and the upper side holding part 30 of the upper side solar cell module 10 provided side by side and the upper side holding part of the lower side solar cell module 10 are provided. Since 20 is also a separate body, it is possible to perform attachment by adjusting the distance between the solar cell modules 10 and 10 arranged above and below. For example, it can arrange | position so that the distance between the upper and lower solar cell modules 10 and 10 may be made longer, and it can fix to the sound insulation wall 600, without attaching the mounting plates 24 and 34. FIG. In this case, a spacer may be provided between the mounting plate 34 and the sound insulation wall 600 as necessary, or the mounting plate 34 may be formed flush with the vertical surface 311.

  Thus, by making the upper side holding part 20 and the lower side holding part 30 as separate bodies, it is possible to perform attachment in which the distance between the solar cell modules 10 and 10 arranged vertically can be adjusted. The distance between the modules 10 and 10 is appropriately adjusted as necessary, and is set so that the shade generated on the light receiving surface 12 of the solar cell module 10 is less than a predetermined region from the upper end of the light receiving surface 12 as described later, or a solar cell The solar cell module 10 can be easily attached by setting so that the shade generated on the light receiving surface 12 of the module 10 does not cover the light receiving surface 12. Further, by adjusting the distance between the upper and lower sides of the solar cell modules 10 and 10 to suppress or prevent the shade, the amount of protrusion of the lower holding portion 30 and the solar cell module 10 etc. to the outside of the sound insulation wall is within the regulation range. It is possible to stay within a predetermined range.

And in the attachment structure of 1st Embodiment, it sets so that the shade which generate | occur | produces in the light-receiving surface 12 of the solar cell module 10 with the sunlight of the south middle altitude of the summer solstice may become less than a regulation area | region from the upper end of the light-receiving surface 12. , The protrusion amount in the outward direction at the tip portion extending in the direction along the traveling path at the tip in the outer direction of the upper holding portion 20 and the lower holding portion 30, the inclination angle of the solar cell module 10, and the upper and lower solar cell modules 10. In this example, the generated shade is set so as to remain on a part of the light receiving surface 12 of the solar cell 11 in the uppermost row of the solar cell module 10. And the solar cell module 10 is attached.

  That is, in the sunlight L1, L2, and L3 in FIG. 3, when the sunlight L3 having the steepest inclination angle from the horizon H is the sunlight in the south-mid altitude in the summer solstice, this corresponds to the case where the solar altitude is lower than this. The sunlight L1 and L2 having a gentle inclination angle is incident on the upper end of the light receiving surface 12 of the solar cell module 10 without being blocked by the lower holding unit 30 and the upper holding unit 20 located on the upper side, and is shaded on the light receiving surface 12. Does not occur. On the other hand, in the sunlight L3, which is the solar light at the mid-high altitude of the summer solstice, a shaded area S is generated from the upper end of the light receiving surface 12 of the solar cell module 10, so that the shaded area S is less than the specified area. In this example, it sets so that it may remain in a part of light-receiving surface 12 of the photovoltaic cell 11 of the uppermost row, and the situation where generation | occurrence | production of the photovoltaic cell 11 which does not generate electric power, or the solar cell module 10 does not generate electric power is suppressed as much as possible. In addition, this regulation area | region is an area | region which the solar cell module 10 can generate electric power, without generating the photovoltaic cell 11 which does not generate electric power.

In addition, instead of setting the shade generated on the light receiving surface 12 of the solar cell module 10 by the sunlight at the south and middle altitudes of the summer solstice to be less than the specified region from the upper end of the light receiving surface 12, Setting is made so that the shade generated on the light receiving surface 12 of the solar cell module 10 by sunlight does not reach the light receiving surface 12 of the solar cell module 10, and the traveling path at the front end in the outer direction of the upper holding portion 20 and the lower holding portion 30. The amount of protrusion of the tip portion extending in the direction along the outer side, the inclination angle of the solar cell module 10, the distance between the upper and lower solar cell modules 10, etc. are regulated so that the solar cell module 10 can be attached. Is also possible.

  That is, in the sunlight L1 and L2 of FIG. 3, when the sunlight L1 whose inclination angle from the horizontal line H is steeper than L2 is the sunlight of the southern middle altitude in the summer solstice, even the sunlight L1 is located on the upper side. It is set so that it will not enter the upper end of the light receiving surface 12 of the solar cell module 10 without being shielded by the lower holding portion 30 and the upper holding portion 20 and will not be shaded by the light receiving surface 12, and The solar cell module 10 is attached so as to prevent occurrence or a situation where the solar cell module 10 does not generate power.

  For reference, FIG. 5 shows the relationship between the shade generated in the solar cell module and the power generation amount. FIG. 5 shows the shade and power generation amount when four 71 W solar cell modules 10 are connected in series, and one solar cell 11 of one of the solar cell modules 10 is shaded (shadowed). Showing the relationship. The rated power generation amount is 284 W (71 W × 4 sheets). Change the length of the shadow, and the power generation amount of the solar cell module 10 of the solar cell 11 with the shadow decreases from the shadow length of about 10 mm, and it is applicable when the shadow length is 30 mm or more. It can be seen that the solar cell module 10 is not generating power.

  And the solar power generation device 200 of 1st Embodiment respond | corresponds to the solar cell module 10 attached with the attachment structure of the solar cell module 10 of 1st Embodiment as a solar cell module corresponding to all or one part. It is comprised as what it has as a solar cell module (refer FIG. 4). In the solar power generation device 200 of FIG. 4, a solar cell array 100 is configured by connecting a plurality of solar cell modules 10 in series, and an abnormality detection device 500 for the solar cell module 10 is provided. The abnormality detection device 500 is provided for each predetermined plurality of solar cell modules 10 in the solar cell array 100, for example, and the abnormality of the corresponding plurality of solar cell modules 10 as in the examples of FIGS. Detect and notify.

  Further, the solar power generation apparatus 200 is provided with a power conditioner 300 corresponding to the solar cell array 100. The power conditioner 300 converts the electric power obtained from the solar cell array 100 from direct current to alternating current, and an external system power supply. It outputs to 400 and is connected.

  The mounting structure of the solar cell module 10 of the first embodiment or the photovoltaic power generation apparatus 200 ensures light reception corresponding to the higher altitude with respect to the upper part of the light receiving surface 12 of the solar cell module 10 in which the shade usually occurs. The shade generated on the light receiving surface 12 of the solar cell module 10 can be suppressed or eliminated as much as possible, and the generation of the solar cells 11 that do not generate power and the situation where the entire solar cell module 10 does not generate power as much as possible are avoided. It can be suppressed or prevented. Therefore, the high power generation efficiency of the solar cell module 10 and the solar power generation device 200 configured by the solar cell module 10 can be ensured, and the power that can be used for solar power generation can be increased. In addition, stable power generation at the time when the power demand in summer becomes very large can be realized, and the stability of power supply corresponding to the time and time zone when the power demand is high can be improved. Further, the upper holding part 20 and the lower holding part 30 can be attached to an existing sound insulation wall back plate or exterior plate, and the solar cell module 10 can be installed with good workability and low cost. Therefore, the existing sound insulation wall can be used effectively.

[Solar Cell Module Mounting Structure and Solar Power Generation Device of Second Embodiment]
Next, a solar cell module mounting structure and a photovoltaic power generation apparatus according to a second embodiment of the present invention will be described.

  The solar cell module mounting structure and the photovoltaic power generation apparatus 200 according to the second embodiment have the same basic configuration as that of the first embodiment, but as shown in FIG. 20a and the lower side holding | maintenance part 30a differ from 1st Embodiment.

  The upper holding portion 20a has an elongated plate-like substrate 21a extending in the direction of the travel path. A substantially L-shaped holding piece 22a is provided at the lower end of the substrate 21a in a sectional view and bent from the upper end of the substrate 21a. A mounting plate 23a protruding in a substantially vertical direction is provided. The attachment plate 23a is attached to the sound insulation wall 600 by attachments such as bolts 41 and nuts 42. Further, a separate Z-shaped holding piece 24a in cross-sectional view is screwed to the substrate 21a via a spacer, and the tip end of the holding piece 22a extending in parallel at a predetermined inclination angle and the tip end of the holding piece 24a A space is formed between the non-light receiving region 13 at the upper edge of the solar cell module 10 at a predetermined inclination angle.

The tip of the upper holding portion 20a in the outer direction is the tip of the separate holding piece 24a in the outer direction (tip portion extending in the direction along the traveling path), and the amount of protrusion is the tip of the lower holding portion 30a in the outer direction. It has become naturally smaller than, further, the tip portion extending in a direction along the travel path in the outward direction of the front end of the upper holding portion 20a extends in a direction along the travel path in the outward direction of the front end of the lower holding part 30a Naturally, it is provided on the inner side of the line connecting the tip portion and the upper end of the light receiving surface 12 of the solar cell module 10 held by the upper holding portion 20a immediately below the lower holding portion 30a.

  The lower holding portion 30a has an elongated plate-like substrate 31a extending in the direction of the traveling path, and a substantially L-shaped holding piece 32a is provided at the upper end of the substrate 31a in a sectional view, and from the lower end of the substrate 31a. A mounting plate 33a that is bent and protrudes in a substantially vertical direction is provided. The attachment plate 33a is attached to the sound insulation wall 600 by attachments such as bolts 41 and nuts 42. In addition, a separate L-shaped holding piece 34a in a cross-sectional view is screwed to the substrate 31a, and the holding piece 34a extends in parallel at a predetermined inclination angle between the tip end of the holding piece 32a and the tip end of the holding piece 34a. A space is formed, and the non-light-receiving region 13 on the lower edge of the solar cell module 10 is fitted into the space at a predetermined inclination angle. In addition, although the upper side holding | maintenance part 20a and the outer side holding | maintenance part 30a of an example of illustration are not connected, it is also possible to connect with a connection member.

  In the mounting structure of the second embodiment, as in the first embodiment, the shade generated on the light receiving surface 12 of the solar cell module 10 by sunlight at the south and middle altitudes in the summer solstice is less than the specified region from the upper end of the light receiving surface 12. In this example, the shade generated is set so that it stays on a part of the light receiving surface 12 of the solar cell 11 in the uppermost row of the solar cell module 10, and the solar cell module 10 is attached. Yes. Similarly to the first embodiment, setting is made so that the shade generated on the light receiving surface 12 of the solar cell module 10 by the sunlight at the south and middle altitudes in the summer solstice does not reach the light receiving surface 12 of the solar cell module 10. It is also possible to attach the battery module 10. Moreover, the solar power generation device 200 in the second embodiment is the same as that in the first embodiment.

  In 2nd Embodiment, cost reduction can be aimed at by making the upper side holding | maintenance part 20a and the lower side holding | maintenance part 30a into a simpler structure. Moreover, since the front-end | tip of the outer side direction of the upper side holding | maintenance part 20a becomes a front-end | tip of the holding piece 24a which hold | maintains the upper edge of the solar cell module 10 from the outside, the protrusion amount to the outer side direction of the lower side holding | maintenance part 30a and a solar cell Regardless of the inclination angle of the module 10, the upper holding portion 20 a can substantially prevent the incident of sunlight from being incident on the upper end of the light receiving surface 12 of the solar cell module 10. The degree can be increased. Moreover, since it is the structure which fixes the upper side holding | maintenance part 20a and the lower side holding | maintenance part 30a to the sound insulation wall 600 from the beginning, the distance adjustment of the upper and lower solar cell modules 10 and 10 becomes easy. In addition, the configuration corresponding to the first embodiment has the same effects as the first embodiment.

[Examples of power conditioners in the first and second embodiments]
Next, the example of the power conditioner in the solar power generation device 200 of 1st, 2nd embodiment is demonstrated.

  As shown in FIG. 7, the power conditioner 300 of this example is provided by being connected to a solar cell array 100 configured by connecting a plurality of solar cell modules 10 attached in the mounting structure in series or in parallel, The electric power obtained from the solar cell module 10 attached by the mounting structure or the like, that is, the electric power obtained from the solar cell array 100 is converted from direct current to alternating current, and output to the external system power source 400 to be interconnected. The external system power supply 400 in the illustrated example is a three-phase three-wire AC200V, and 401 is an electric wire corresponding to each of the U phase, V phase, and W phase.

  The power conditioner 300 converts electric power obtained from the solar cell module 10 or the solar cell array 100 from direct current to alternating current, and outputs it. The solar cell array 100 is connected via an input-side switch 301 and a backflow prevention diode 302. And a smoothing capacitor C1 for smoothing the input DC power, a booster circuit 310 for boosting the input DC power, and connected to the external system power supply 400 via the output-side switch 303. Two voltage dividing capacitors C2 and C3 connected in series, an inverter 320 that converts the boosted power from direct current to alternating current and outputs, a drive control unit 330 that controls the drive operation, and a drive control unit 330 A first power supply unit 340 and a second power supply unit 350 that supply power for operation are provided.

  The step-up circuit 310 includes a step-up inductor L, a diode D, and a switching element S1 in which a freewheeling diode D1 is connected in antiparallel, and the switching element S1 is connected between the step-up type inductor L and the diode D. ing. Furthermore, an auxiliary capacitor C4 is connected in parallel to the DC power input side from the solar cell array 100 in the booster circuit 310, and the electric power input from the solar cell array 100 is temporarily stored in the auxiliary capacitor C4. When the power conditioner 300 that requires a large amount of power is started, the power necessary for the booster circuit 310 is supplied by both the power from the solar cell array 100 and the auxiliary power stored in the auxiliary capacitor C4, and the amount of power generation is smaller. In addition, it is possible to assist the activation of the power conditioner 300 with the electric charge stored in the auxiliary capacitor C4.

  The inverter 320 is a three-phase line voltage control type and a half-bridge type, and includes four sets of switching elements S2 to S5 to which the freewheeling diodes D2 to D5 are connected in antiparallel, and the switching element S2 connected in series. , S3 and S5 connected in series are connected in parallel. Outputs (U-phase and W-phase) are taken out from the midpoints of the series-connected switching elements S2 and S3 and the midpoints of the series-connected switching elements S4 and S5, respectively, and the voltage dividing capacitors C2 and C3 The ground phase (V phase) is taken out from the point.

  The drive control unit 330 is configured by a microcomputer having an arithmetic processing unit, a storage unit, and the like. According to a control program set in the storage unit, the on / off control of the switching element S1 of the booster circuit 310 and the switching of the inverter 320 are performed. The entire control of the power conditioner 300 such as on / off control of the elements S2 to S5 is performed. The power conditioner 300 includes, for example, a voltage detector that detects the output voltage of DC power generated by the solar cell array 100, a current detector that detects the output current of the solar cell array 100, a voltage dividing capacitor C2, A voltage detector for detecting the DC link voltage by C3, a current detector for detecting the output AC current of the inverter 320, a voltage detector (not shown) for detecting the three-phase line voltage of the external system power supply 400, etc. are provided as appropriate. These detection signals are taken into the drive control unit 330, and the drive control unit 330 performs a predetermined control operation.

  The DC power of the solar cell array 100 can be input to the first power supply unit 340 by branching from both sides of the smoothing capacitor C1 corresponding to the input side of the booster circuit 310. The DC power of the solar cell array 100 is input to the first power supply unit 340 in a state where the switch 304 is opened and closed and the switch 304 is closed. The first power supply unit 340 adjusts the input DC power of the solar cell array 100 by stepping down the power and supplies it to the drive control unit 330.

  Further, the output side switch 303 connected to the external system power supply 400 and the inverter 320 branch from the W-phase and V-phase electric wires 401, and the second power supply unit 350 receives the AC power of the external system power supply 400 and the like. The AC power output from the inverter 320 can be input, and the switch 305 is opened and closed under the control of the drive control unit 330. The AC power is input to the second power supply unit 350 with the switch 305 closed. The The second power supply unit 350 adjusts the input AC power of the solar cell array 100 by stepping down, AC / DC conversion, and the like, and supplies the AC power to the drive control unit 330 as DC power.

  When the solar cell array 100 performs normal power generation, the drive control unit 330 closes the switch 304 and controls a part of the DC power generated by the solar cell array 100 by the first power supply unit 340. For example, the DC link voltage to be detected, the output voltage of the solar cell array 100 to be detected, or the calculated value from these values, the threshold value stored in the storage unit, the voltage of the external system power supply 400, etc. Alternatively, in contrast to the calculated value or the like, when a predetermined condition is satisfied, such as when the DC link voltage of the solar cell array 100 is less than the threshold value, the switch 304 is turned off and the switch 305 is turned on, so that the second power supply unit 350, the power extracted from the output side of the inverter 320, that is, the AC power of the external system power supply 400 or the AC power output from the inverter 320 It adapted to receive a supply part as a control power supply, a first control power supply and the second control power is supplied to the drive control unit 330 selects and according to a predetermined condition other words.

  When the drive control unit 330 is supplied with control power from the second power supply unit 350, a part of the DC power of the solar cell array 100 supplied to the drive control unit 330 from the first power supply unit 340 is The power conditioner 300 is input to the booster circuit 310 without being consumed by itself, contributes to boosting of the DC link voltage, and maintains the state of the reverse power flow to the external system power supply 400 of the DC power generated by the solar cell array 100 or It becomes possible to recover. Therefore, the power conditioner 300 can be operated even when the power generation amount of the solar cell array 100 is small, such as early morning, evening, or in cloudy weather, and the generated power at this time can be used effectively. When a predetermined condition is satisfied, for example, when the DC link voltage of the solar cell array 100 is equal to or higher than the threshold, the switch 304 is turned on and the switch 305 is turned off to supply the first power from the second power supply unit 350. The supply source of the control power to the drive control unit 330 is switched to the unit 350.

  The solar power generation apparatus 200 including the power conditioner 300 of this example uses the auxiliary capacitor C4 to generate a large amount of power necessary for starting the power conditioner 300, and the power generation of the solar cell module 10 or the solar cell array 100 and the auxiliary capacitor C4. The power conditioner 300 can be started and operated even when the amount of power generation is small, and the power available by solar power generation can be further increased. In addition, the power conditioner 300 is used by appropriately adjusting and using the DC power generated by the solar cell module 10 or the solar cell array 100, the AC power output from the power conditioner 300, and the AC power supplied from the external system power supply 400. It becomes possible to operate more continuously, and it is possible to further increase the power available by solar power generation.

[Example of abnormality detection apparatus in first and second embodiments]
Next, an example of the abnormality detection device 500 in the solar power generation device 200 of the first and second embodiments will be described.

  The abnormality detection device 500 of this example is provided in the plurality of solar cell modules 10 attached with the above-described attachment structure, and the abnormality detection device 500 includes an abnormality detection unit 510 and a branch line 520 as shown in FIG. And an abnormality display unit 530 corresponding to the notification unit. In the example of FIG. 8, one abnormality detection device 500 is provided for the four solar cell modules 10 a to 10 d connected in series with the connection line 50. The abnormality display unit 530 has an abnormality indicator lamp 531 corresponding to each of the solar cell modules 10a to 10d, and any one or more of the abnormality indicator lamps 531 are lit or blinking, thereby corresponding solar cell modules 10a to 10d. Any one or more abnormalities are announced.

  The branch line 520 includes a connection line 50 connected to one end of the solar cell module 10a corresponding to one end of the series-connected solar cell modules 10a to 10d, and a connection line 50 connecting the solar cell modules 10a and 10b to each other. The solar cell modules 10b and 10c are connected to each other, the solar cell modules 10c and 10d are connected to each other, and the solar cells corresponding to the other end of the series-connected solar cell modules 10a to 10d. The branch lines 520 are connected to the connection lines 50 connected to the other end of the module 10d, and each branch line 520 connects the connection line 50 to the abnormality detection unit 510. The voltages V 1, V 2, V 3, V 4 and V 5 of each connection line 50 are taken into the abnormality detection unit 510 via the branch line 520.

  As illustrated in FIG. 9, the abnormality detection unit 510 includes a voltage acquisition unit 511, a voltage comparison unit 512, an abnormality determination unit 513, and a display control unit 514. Each of the voltage acquisition unit 511, the voltage comparison unit 512, the abnormality determination unit 513, and the display control unit 514 includes an arithmetic processing unit such as a CPU, a storage unit, and the like. The storage unit includes a control program and a process in a predetermined storage area. Predetermined data used in is stored, and each unit performs a predetermined operation according to the control program.

  The voltage acquisition unit 511 generates the power generation voltage Va = V2−V1 of the solar cell module 10a and the power generation of the solar cell module 10b from the voltages V1, V2, V3, V4, and V5 of each connection line 50 input from the branch line 520. The voltage Vb = V3-V2, the power generation voltage Vc = V4-V3 of the solar cell module 10c, and the power generation voltage Vd = V5-V4 of the solar cell module 10d are calculated and acquired.

  The voltage comparison unit 512 is a comparison formula for determining whether or not the relative comparison value between the power generation voltage of one solar cell module 10 and the power generation voltage of another solar cell module 10 is within an allowable range, The setting coefficient or setting value used in the comparison formula is stored in the storage unit, and one solar cell module 10 is used at an appropriate timing such as every several milliseconds to one second by using the comparison formula and the setting coefficient. And the other solar cell module 10 are compared with each other to determine whether or not the comparison value is outside the allowable range.

  For example, when the power generation voltage of one solar cell module 10 is Vm, the power generation voltage of another solar cell module 10 is Vn, and the setting coefficient is α, this comparison formula is expressed as α · Vm−Vn> 0, α · Vn. It is possible to determine that −Vm> 0 and out of the allowable range in either case. This is because the generated voltage is low when one of the generated voltages of the two solar cell modules 10 and 10 is less than a certain ratio (for example, 0.5 in the case of 50%) indicated by α of the other generated voltage. 6 is a comparison formula for detecting an abnormality caused by a decrease in generated voltage of the solar cell module 10 of the other side.

  As another comparative expression, for example, when the power generation voltage of one solar cell module 10 is Vm, the power generation voltage of another solar cell module 10 is Vn, and the set value β is Vm−Vn> β, Vn− It is possible to determine that Vm> β and out of the allowable range in either case. This is to detect an abnormality caused by a decrease in the power generation voltage of the solar cell module 10 having the lower power generation voltage when the difference between the power generation voltages of the two solar cell modules 10 and 10 exceeds a set value (threshold value) indicated by β. This is a comparison formula.

  The solar cell modules 10 for comparing the generated voltages with each other are adjacent solar cell modules 10 such as the solar cell modules 10a and 10b in the illustrated example, the solar cell modules 10c and 10c, and the solar cell modules 10c and 10d. Then, it is preferable that the solar cell modules 10 and 10 having closer environmental conditions can be compared with each other. However, for example, the solar cell modules 10a and 10c and the solar cell modules 10b and 10d are compared with each other and abnormal. It is also possible to detect.

  The abnormality determination unit 513 determines whether the comparison value between the power generation voltage of one solar cell module 10 and the power generation voltage of the other solar cell module 10 in the voltage comparison unit 512 is outside the allowable range. Data indicating the state of the lower solar cell module 10 is temporarily stored in the storage unit, and the power generation of one solar cell module 10 is performed using the set duration time separately stored in the storage unit. It is determined whether or not the state where the comparison value between the voltage and the generated voltage of the other solar cell module 10 is outside the allowable range continues beyond the set duration, and continues beyond the set duration. If it is determined, the solar cell module 10 with the lower power generation voltage is determined to be abnormal.

  In response to the abnormality determination of the abnormality determination unit 513, the display control unit 514 performs lighting or blinking control of the abnormality display lamp 531 corresponding to the solar cell module 10 with the lower power generation voltage in that state, and the abnormality display unit 530 The abnormality indicator lamp 531 notifies the outside of the abnormality of the solar cell module 10 in which the abnormality is determined.

  And in the abnormality detection process in the abnormality detection apparatus 500 of this example, as shown in FIG. 10, the voltage acquisition part 511 calculates and acquires the power generation voltage Va-Vd of the solar cell modules 10a-10d (S101), and voltage The comparison unit 512 compares the generated voltages of the solar cell modules 10a and 10b, the solar cell modules 10b and 10c, and the solar cell modules 10c and 10d, respectively, and determines whether or not the comparison value is outside the allowable range. (S102). In response to the determination that it is outside the allowable range, the abnormality determination unit 513 determines whether or not the state outside the allowable range continues beyond the set duration (S103), and exceeds the set duration. If it is determined that the solar cell module 10 with the lower generated voltage in that state is abnormal, it is determined that there is an abnormality (S104). The display control unit 514 notifies the abnormality to the outside by turning on or blinking the abnormality indicator lamp 531 corresponding to the solar cell module 10 in which the abnormality is determined (S105).

  The solar power generation device 200 including the abnormality detection device 500 of the present example is temporarily shaded by detecting an abnormality by relatively comparing the power generation voltages of one solar cell module 10 and another solar cell module 10. It is possible to avoid erroneously detecting an abnormality when the sunlight for the solar cell module 10 is temporarily insufficient, such as when an error occurs, and detecting an abnormality of the solar cell module 10 in which an abnormality has actually occurred Can do. Moreover, in addition to the abnormality which the solar cell module 10 is not generating electric power, the abnormality which the power generation voltage of the solar cell module 10 is falling can also be detected as abnormality. Furthermore, the influence of the abnormal solar cell module 10 on the photovoltaic power generation can be corrected quickly and surely, which contributes to an increase in available power by the photovoltaic power generation. In addition, since only one abnormality detecting device 500 needs to be provided for a plurality of solar cell modules 10, it is possible to reduce the installation space and cost of the abnormality detecting device.

[Modifications of Embodiment, etc.]
The invention disclosed in this specification is specified by changing these partial configurations to other configurations disclosed in this specification, in addition to the configurations of each invention, embodiment, and example, to the extent applicable. Or those specified by adding other configurations disclosed in this specification to those configurations, or those obtained by deleting these partial configurations to the extent that partial effects can be obtained, Is included.

  For example, the upper holding portions 20 and 20a and the lower holding portions 30 and 30a in the above embodiment are exemplifications, and can be appropriately configured within the scope of the gist of the present invention. Moreover, what includes the solar cell module which is not the solar cell module mounting structure of the present invention in part depending on the location or the like is also included in the solar power generation device of the present invention. Moreover, the power conditioner in this invention is applicable also in the case of the solar power generation device by the attachment structure which is not the attachment structure of the solar cell module of this invention, or a solar cell module.

  The present invention can be used when solar power generation is performed by attaching a solar cell module to a sound insulation wall.

DESCRIPTION OF SYMBOLS 10, 10a, 10b, 10c, 10d ... Solar cell module 11 ... Solar cell 12 ... Light-receiving surface 13 ... Non-light-receiving area 20 ... Upper side holding part 21 ... Base | substrate 211 ... Vertical surface 212 ... Inclined surface 22 ... Holding piece 23 ... Recessed part 24 ... Mounting plate 20a ... Upper holding portion 21a ... Substrate 22a, 24a ... Holding piece 23a ... Mounting plate 30 ... Lower holding portion 31 ... Base 311 ... Vertical surface 312 ... Inclined surface 32 ... Holding piece 33 ... Recess 34 ... Mounting plate 30a ... Lower holding portion 31a ... Substrate 32a, 34a ... Holding piece 33a ... Mounting plate 41 ... Bolt 42 ... Nut 43 ... Connecting member 100 ... Solar cell array 200 ... Solar power generation device 300 ... Power conditioner 301, 303, 304, 305 ... Switch 302 ... Backflow prevention diode 310 ... Boost circuit 320 ... Inverter 330: Drive control unit 340: First power supply unit 350: Second power supply unit C1: Smoothing capacitor C2, C3: Voltage dividing capacitor C4: Auxiliary capacitor L: Boosting inductor D: Diodes D1, D2, D3, D4, D5 ... Freewheeling diode S1, S2, S3, S4, S5 ... Switching element 400 ... External system power supply 401 ... Electric wire 500 ... Abnormality detection device 510 ... Abnormality detection unit 511 ... Voltage acquisition unit 512 ... Voltage comparison unit 513 ... Abnormality determination 514 ... Display control unit 50 ... Connection line 520 ... Branch line 530 ... Abnormal display unit 531 ... Abnormal indicator lamp 600 ... Sound insulation wall L1, L2, L3 ... Sunlight H ... Horizontal line S ... Shade area

Claims (8)

Solar cell modules connected in series with solar cells are mounted in a vertical direction on the back side opposite to the traveling path of the sound insulation wall, and each of the solar cell modules is inclined so as to approach the sound insulation wall as it goes upward. A solar cell module mounting structure provided as
The upper holding part fixed to the back side of the sound insulation wall and the lower holding part separate from the upper holding part, the upper end side and the lower end side of each of the solar cell modules are respectively held,
The upper holding portion is formed with a smaller amount of protrusion in the outer direction than the lower holding portion,
The lower holding part of the upper solar cell module provided side by side and the upper holding part of the lower solar cell module are separated, and the solar cell modules arranged above and below are separated from each other. Is adjustable and attached,
The solar cell is set such that the shade generated on the light receiving surface of the solar cell module by sunlight at the south-mid altitude in the summer solstice is less than a prescribed region where the solar cell module can generate power from the upper end of the light receiving surface. A solar cell module mounting structure, wherein the module is mounted.   2. The solar cell according to claim 1, wherein the solar cell module is mounted such that the generated shade is set so as to remain on a part of a light receiving surface of the uppermost solar cell of the solar cell module. Module mounting structure. Solar cell modules connected in series with solar cells are mounted in a vertical direction on the back side opposite to the traveling path of the sound insulation wall, and each of the solar cell modules is inclined so as to approach the sound insulation wall as it goes upward. A solar cell module mounting structure provided as
The upper holding part fixed to the back side of the sound insulation wall and the lower holding part separate from the upper holding part, the upper end side and the lower end side of each of the solar cell modules are respectively held,
The upper holding portion is formed with a smaller amount of protrusion in the outer direction than the lower holding portion,
The lower holding part of the upper solar cell module provided side by side and the upper holding part of the lower solar cell module are separated, and the solar cell modules arranged above and below are separated from each other. Is adjustable and attached,
The solar cell module is mounted in such a manner that the shade generated on the light receiving surface of the solar cell module by the sunlight at the south and middle altitudes of the summer solstice does not reach the light receiving surface of the solar cell module. Battery module mounting structure. Outward tip distal portion extending in a direction along the travel path of the upper retaining portion, and a tip portion extending in a direction along the travel path in the outward direction of the distal end of the lower retaining portion, immediately below the lower retaining portion The solar cell module according to any one of claims 1 to 3, wherein the solar cell module is provided on an inner side than a line connecting an upper end of a light receiving surface of the solar cell module held by the upper holding portion. Mounting structure. A solar power generation device comprising at least a part of the solar cell module attached by the solar cell module mounting structure according to any one of claims 1 to 4 . It is a solar power generation device of Claim 5 provided with the power conditioner which converts the electric power obtained from a solar cell module from direct current to alternating current, and outputs it,
The power conditioner is
A booster circuit that boosts a DC voltage of power input from the solar cell module;
An inverter that converts the boosted power from direct current to alternating current and outputs,
The generated power of the solar cell module is supplied as a control power source, and has a drive control unit that controls the drive operation,
The solar power generation device, wherein an auxiliary capacitor that temporarily stores generated power of the solar cell module and supplies auxiliary power when starting the power conditioner is provided in the booster circuit. A control power source of the drive control unit is supplied from a first control power source supplied from a branch between the output side of the solar cell module and the booster circuit, and from a branch between the output side of the inverter and an external system power source. The photovoltaic power generation apparatus according to claim 6, wherein the second control power to be supplied is selected and supplied according to a predetermined condition. It is a solar power generation device in any one of Claims 5-7 provided with the abnormality detection apparatus of a solar cell module,
As the abnormality detection device,
The power generation voltage of one solar cell module and the power generation voltage of another solar cell module are obtained, the power generation voltage of the one solar cell module and the power generation voltage of the other solar cell module are mutually compared, and the comparison result is An abnormality detection unit that determines that the solar cell module with the lower power generation voltage is abnormal when the state outside the allowable range of the predetermined condition exceeds a predetermined setting time;
A notification unit for notifying the abnormality of the solar cell module determined as the abnormality;
A solar power generation apparatus comprising:

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