JP2015142096A - Photovoltaic power generation module laminate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a photovoltaic power generation module laminate in which external impact is mitigated and formation of a scratch on the condenser lens surface is reduced, when laminating a plurality of concentrating photovoltaic power generation modules supporting a plurality of condenser lenses above a support housing, by using a general-purpose member.SOLUTION: A concentrating photovoltaic power generation module 2 having a plurality of power generation receivers performing photovoltaic power generation, a plurality of resin condenser lenses having a curved shape and condensing sunlight on the power generation receiver, and a support housing for housing and fixing the power generation receiver and supporting the condenser lens, and a buffer substrate 32 consisting of a planar cushioning material are laminated alternately. Between the photovoltaic power generation module 2 and the buffer substrate 32, a lens protective film 31 composed of a resin film is arranged in contact with at least the surface of the condenser lens.

Description

  The present invention relates to a photovoltaic power generation module laminate, and more particularly to a laminate in which a plurality of photovoltaic power generation modules having a condenser lens are laminated for transportation or the like.

  As a conventional concentrating solar power generation module, a plurality of power generation receivers including solar power generation elements are housed and fixed in a hollow support housing having a bottom plate and a side wall plate, Some have a configuration in which a plurality of condensing lenses having a curved surface shape for concentrating sunlight on each power generation receiver are fixed (for example, see Patent Document 1). This type of concentrating solar power generation module is often installed in a plurality of arrangements in order to obtain high power generation efficiency. In such a case, it is necessary to transport a plurality of concentrating solar power generation modules from the manufacturing location to the installation location.

  In this type of concentrating solar power generation module, in order to collect light, a predetermined distance is provided between the condensing lens and the power generation receiver, and the upper surface is formed of a curved surface. Compared with the flat-plate solar power generation module, a plurality of stacked solar battery modules are bulky. Moreover, in the concentrating solar power generation module, the positional relationship between the condensing lens and the power generation receiver is precisely aligned so that high power generation efficiency can be obtained, and if this positional relationship shifts during transportation, Significant impact on power generation efficiency. In particular, such a shift is likely to occur when the bottom plate and the side wall plate of the support housing are thinned in order to reduce the weight of the entire module. Further, if rubbing occurs between the condensing lens and other constituent members or packing members of the photovoltaic power generation module during transportation, scratches may be formed on the condensing lens, which may affect power generation efficiency. Thus, in order to transport a concentrating photovoltaic power generation module, which is a large and precise optical device, efficiently and while protecting it from an impact, a plurality of concentrating photovoltaic power generation modules are bulky. Therefore, there is a need for a lamination method in which lamination is performed so that impact and vibration can be effectively absorbed and reduced.

  The above-described concentrating solar power generation module provided with a curved condensing lens on the upper surface of the support housing has a non-planar shape on the upper surface. As a method for stably laminating a large number of members having this kind of non-planar shape, for example, in Patent Document 2 and Patent Document 3, when stacking a plurality of uneven thickness resin sheets with uneven thickness in the thickness direction, , A method of putting a cushioning material having a thickness opposite to that of the uneven thickness of the uneven thickness resin sheet, and a pallet having unevenness opposite to the thickness of the thickness of the uneven thickness resin sheet. Describes a method of placing an uneven thickness resin sheet and loading the pallet.

JP 2008-4661 A JP 2009-227772 A JP 2009-226773 A

  When stacking a plurality of concentrating solar power generation modules having a non-planar top surface shape, a buffer member or a fixing member having an opposite non-planar shape is placed between layers as in cushion materials and pallets disclosed in Patent Documents 2 and 3. If it is interposed, there is a possibility that a plurality of photovoltaic power modules can be stably transported while being stacked. However, since the buffer member and the fixing member having such a special non-planar shape are manufactured according to the shape of the object to be transported, a large cost is required. In addition, when friction occurs between a transport target member having a non-planar shape (here, a condenser lens) and a packing member having a reverse non-planar shape such as a cushion material, a large area is formed on the surface of the transport target member. There is a risk that scratches may be formed.

  The problem to be solved by the present invention is that, when a plurality of concentrating solar power generation modules supporting a plurality of condensing lenses are stacked on the upper part of a support housing, impact from the outside is reduced and An object of the present invention is to provide a solar power module laminated body in which the formation of scratches on the surface of the optical lens is reduced using a general-purpose member.

  In order to solve the above-mentioned problem, a concentrating solar power generation module laminate according to the present invention includes a plurality of power generation receivers that perform solar power generation, and a plurality of resin-made condensing sunlight on the power generation receiver. A concentrating solar power generation module having a condensing lens, a support housing that accommodates and fixes the power generating receiver and supports the condensing lens, and a buffer substrate made of a plate-shaped buffer material, The gist is that a lens protective film made of a resin film is disposed between the photovoltaic power generation module and the buffer substrate so as to be in contact with at least the surface of the condenser lens.

  Here, the lens protective film may be wound around the surface of the buffer substrate. Moreover, it is preferable that the said photovoltaic power generation module laminated body is mounted on the pallet while the outer peripheral part is covered with the fixed film which consists of resin films. At least one of the lens protective film and the fixing film is preferably a stretch film made of a polyolefin resin. On the other hand, the buffer substrate may be made of paper or foamed resin. Moreover, it is preferable that the upper surface of the said photovoltaic power generation module laminated body is covered with the light-shielding member which interrupts sunlight.

  Furthermore, a lattice-shaped lens support frame having a lattice interval corresponding to the size of the condenser lens is fixed to the support housing, and each condenser lens is arranged symmetrically about the optical axis. Further, it is preferable that the lens support frame is fixed to the lens support frame from the outside of the condenser lens by screw fastening. The support housing includes a bottom plate to which the power receiver is fixed, and a side wall plate standing on an outer edge portion of the bottom plate, and the side wall plate is a lower plate positioned on the bottom plate side; It has a step structure that is located on the condenser lens side and that is composed of an upper plate disposed on the outer side in the surface direction of the bottom plate than the lower plate, and an intermediate portion that connects between the lower plate and the upper plate. It is preferable. Moreover, the said electric power generation receiver is good to be fixed by screwing to the said baseplate from the outer surface of the baseplate of the said support housing | casing.

  In the photovoltaic power generation module laminate according to the above invention, the buffer substrate is disposed between the layers in which the plurality of concentrating photovoltaic power generation modules are laminated. The buffer substrate absorbs and relieves shocks and vibrations applied to the laminate during transportation and the like. In particular, it is suppressed that an impact is transmitted between the photovoltaic power generation modules, for example, when a certain photovoltaic power generation module collides with another concentrating photovoltaic power generation module. In addition, since the lens protective film made of a resin film is in close contact with the condenser lens, the buffer substrate is not in direct contact with the surface of the condenser lens, and even if the laminate receives an impact, the lens protective film is not in contact with the condenser lens. Friction is less likely to occur. Thereby, even if an impact or vibration is applied to the laminate, it is difficult for the condensing lens to be scratched. As described above, in the photovoltaic module laminate according to the invention, while the concentrating photovoltaic module is laminated in a compact manner, damage caused by impact or vibration during transportation or scratching on the surface of the condensing lens The formation of is suppressed. In addition, a buffer substrate made of a plate-like cushioning material used for forming a laminated body, and a lens protective film made of a resin film are packaging members having special shapes such as a shape opposite to the shape of a condensing lens. Unlikely, it is obtained universally.

  Here, when the lens protective film is wound around the surface of the buffer substrate, the lens protective film can be turned into a condensing lens by simply laminating the buffer substrate around which the lens protective film is wound with the photovoltaic power generation module. A photovoltaic power module stack disposed in contact with the surface of the solar battery can be formed. Thus, the formation of the laminate is simplified and the handleability of the lens protective film is increased.

  In addition, when the photovoltaic module laminate is placed on a pallet and the outer peripheral portion is covered with a fixing film made of a resin film and fixed to the pallet, Since the displacement of the entire laminate with respect to the pallet is suppressed, the laminate can be transported using the pallet in a state where the photovoltaic power generation module is highly protected from impact and vibration. Further, the fixed film prevents water and the like from entering the laminated body.

  And when a lens protective film is a stretch film which consists of polyolefin resin, a lens protective film adheres with respect to a condensing lens, and it is easy to suppress the formation of the damage | wound to a condensing lens. Moreover, when the fixing film is a stretch film made of a polyethylene-based resin, it is easy to firmly hold the laminated state of the photovoltaic power generation module. Due to these effects, formation of scratches on the surface of the condensing lens in the transportation process and deviation of the photovoltaic power generation module in the laminated structure can be highly suppressed. Furthermore, since these films have stretch properties, it is possible to relatively easily wrap the lens protective film around the buffer substrate, cover the outer peripheral portion of the laminate using the fixed film, and fix it to the pallet.

  On the other hand, when the buffer substrate is made of paper or foamed resin, a general-purpose packaging material can be used as the buffer substrate to effectively absorb and mitigate the impact during transportation.

  In addition, when the top surface of the photovoltaic module stack is covered with a light-shielding member that blocks sunlight, the sunlight incident on the uppermost photovoltaic module during transportation etc. enters the support housing. By inadvertently condensing, it is possible to prevent deterioration and damage to the constituent members of the photovoltaic power generation module including the power generation receiver.

  Furthermore, a lattice-like lens support frame having a lattice interval corresponding to the size of the condensing lens is fixed to the support housing, and each condensing lens is a plurality of symmetrically arranged about the optical axis. On the other hand, if it is fixed to the lens support frame from the outside of the condenser lens by screw fastening, the condenser lens may be affected by impact or heat in the solar power generation module during transportation or after installation. Even if they are continuously applied, their influence is easily exerted evenly around the optical axis of the condenser lens, and is not easily concentrated in a specific direction. As a result, the optical axis is unlikely to shift even if it is affected by external force, heat, dead weight, etc., which may lead to deformation of the condenser lens, including impact during transportation of the laminate. The alignment with the power receiver is not easily displaced in a specific direction. In addition, since each condenser lens is fixed to the lens support frame, even if the condenser lens is deformed, the deformation hardly affects other adjacent condenser lenses.

  Further, the support housing has a bottom plate to which the power receiver is fixed and a side wall plate standing on the outer edge of the bottom plate, and the side wall plate is disposed on the bottom plate side and the condenser lens side. In the case of having a step structure composed of an upper plate disposed outside the lower plate in the plane direction of the bottom plate and an intermediate portion connecting the lower plate and the upper plate, due to the effect of the step structure, The surface rigidity of the side wall plate of the support housing is increased. Thereby, even if a photovoltaic power generation module receives an impact during transportation or the like, damage or deviation of the optical alignment hardly occurs. In addition, when installing the photovoltaic power generation module at the installation site, the intermediate portion is placed on the frame using a step structure and fastened with bolts or the like from the bottom plate side. Can be fixed to. That is, it is not necessary to provide a bracket or the like for fixing to the frame on the photovoltaic power generation module. When a bracket or the like is provided, it becomes an obstacle when a plurality of photovoltaic power generation modules are laminated together with a buffer substrate and a lens protective film to constitute a laminate. Since there is no such obstacle, it becomes easy to form a laminated body compactly.

  In addition, when the power generation receiver is fixed to the bottom plate by screws from the outer surface of the bottom plate of the support housing, the member for fixing the power generation receiver is the bottom plate even if a thin bottom plate is used. The power receiver can be firmly fixed to the bottom plate while avoiding a large protrusion from the back surface of the base plate. Thereby, when forming a photovoltaic module laminate, it is possible to suppress the condensing lens of another photovoltaic module from being damaged or the lamination from becoming unstable by a member protruding from the bottom plate. Can do. Further, even if the photovoltaic power generation module receives an impact during transportation or the like, the optical alignment between the power generation receiver and the condensing lens is less likely to occur.

It is a figure which shows the structure of the solar power generation module laminated body concerning one Embodiment of this invention, (a) is a top view, (b) is a side view. Moreover, (c) is sectional drawing of the buffer board | substrate with a film which comprises a laminated body. It is a perspective view which shows the concentrating solar power generation module which comprises the said solar power generation module laminated body. It is a figure which shows the condensing lens of the said concentrating solar power generation module, (a) is a top view, (b) is AA sectional drawing in (a). It is a perspective view of the said concentrating solar power generation module in the state which has not attached the condensing lens. It is a top view of the said concentrating solar power generation module in the state which has not attached the condensing lens. It is a disassembled perspective view which shows the attachment structure of a condensing lens. It is a figure which shows the support housing | casing of the said concentrating solar power generation module, (a) is the figure which looked at the bottom plate from the back side, (b) is the figure which looked at the side wall plate from the side, (c) is the bottom plate and the side wall It is sectional drawing which shows the junction part of a board.

  Hereinafter, a photovoltaic module laminate (hereinafter sometimes simply referred to as “laminate”) according to an embodiment of the present invention, and a concentrating photovoltaic module (hereinafter simply “solar”) constituting the same. The photovoltaic power generation module ”or“ power generation module ”may be referred to with reference to the drawings.

[Concentrated photovoltaic module]
First, the concentrating solar power generation module 2 constituting the solar power generation module stack 1 according to one embodiment of the present invention will be described with reference to FIGS.

(Overall configuration)
As shown in FIG. 2, the concentrating solar power generation module 2 includes a support housing 12 and a plurality of condensing lenses (primary optical systems) 11 arranged in a matrix. The support housing 12 includes a substantially rectangular bottom plate 14 constituting a lower surface and a side wall plate 13 erected so as to surround the outer peripheral edge of the bottom plate 14. The condensing lens 11 is supported on the upper side of the side wall plate 13 so as to face the bottom plate 14 and close the opening on the upper side of the side wall plate 13. Hereinafter, when describing the configuration of the photovoltaic power generation module 2, the side on which the bottom plate 14 is disposed may be referred to as “lower”, and the side on which the condenser lens 11 is disposed may be referred to as “upper”.

  Inside the hollow portion formed by the support housing 12 and the condenser lens 11, a plurality of power receivers 21 are arranged and fixed on the bottom plate 14 in a matrix corresponding to each condenser lens 11. (See FIGS. 4 and 5). The power generation receiver 21 receives the incident sunlight collected by the condensing lens 11 and generates power.

The power generation receiver 21 includes a solar power generation element 21a made of a semiconductor, converts the light energy of the collected sunlight into electric energy, and outputs the electric energy. In addition to the solar power generation element 21a, the power generation receiver 21 is an optical member (referred to as a secondary optical system or a homogenizer; not shown) that guides the collected sunlight spatially uniform to the surface of the solar power generation element 21a. And a circuit system (not shown) used for taking out the current obtained by the photovoltaic power generation element 21a.

  As the condensing lens 11, a resin Fresnel lens as shown in FIGS. 3 and 6 is preferably used in that both high condensing characteristics and light weight are compatible. The condensing lens 11 configured as a Fresnel lens has a curved surface shape (for example, a partial spherical shape) that rises in a dome shape with the optical axis O as the center. The curved outer surface (convex surface) 11a serving as the incident surface has a smooth surface. On the other hand, on the inner side surface (concave surface) 11b, a large number of sawtooth-shaped ridges 11c centering on the optical axis O are formed concentrically. The condensing lens 11 is preferably composed of a (meth) acrylic resin such as polymethyl methacrylate (PMMA) or a polycarbonate-based resin as a resin having high light transmittance, weather resistance, and durability. .

  The condensing lens 11 and the power generation receiver 21 are such that the center of the surface (light receiving surface) of the solar power generation element 21a is a focal position on the optical axis O of the condensing lens 11 and the semiconductor surface is the condensing lens 11 It is aligned so as to be perpendicular to the optical axis O. Thereby, when sunlight enters parallel to the optical axis O of the condensing lens 11, it is condensed in a spot shape at the focal position on the surface of the solar power generation element 21a, and power generation is performed at a high current density. Therefore, compared to a flat panel power generation panel that does not include the condenser lens 11, it is possible to perform power generation with high efficiency by using the solar power generation element 21a having a small area.

  Thus, since the solar power generation module 2 collects sunlight and generates power, the light receiving surface of the solar power generation module 2 (surface perpendicular to the optical axis O of the condensing lens 11) is The power generation efficiency is highest when it is directed perpendicular to the incident direction of sunlight. For this reason, the solar power generation module 2 is supported by a solar tracking base (not shown) so that the arrangement angle in the azimuth direction (turning direction) and altitude direction (inclination direction) can be changed. It is controlled so as to face the direction perpendicular to the incident direction. Thereby, even if the position of the sun on the celestial sphere changes, highly efficient power generation can be maintained.

(Power receiver fixed structure)
As described above, the power generation receiver 21 is fixed to the bottom plate 14 of the support housing 12. This fixing may be performed in any way, but is preferably fixed by the following mechanism. That is, a tapped hole (not shown) is formed on the back surface (the surface on the side in contact with the bottom plate 14) of the substrate 21b of the power generating receiver 21, and the bolt 26 is placed at a position corresponding to the tapped hole on the bottom plate 14. A through hole (not shown) that can be inserted is formed in advance. And the electric power receiver 21 is arrange | positioned on the baseplate 14 in the position of a tap hole and a through-hole, the volt | bolt 26 is inserted in a through-hole from the back surface (outer surface of the support housing | casing 12) of the baseplate 14, and the electric power receiver 21 It only has to be tightened in the tapped hole on the back surface of the substrate (see FIG. 7A).

  Conventionally, in this type of power generation module, since the upper surface facing the inside of the support housing 12 is a work surface such as wiring, the power generation receiver 21 is fixed from the upper surface using a fastening member. Specifically, a tapping screw or rivet is attached to the bottom plate 14 from the top surface, a bolt is inserted into the bottom plate 14 from the top surface, and a back surface is fitted with a nut. In these cases, a fastening member such as a tapping screw, a tip portion of a rivet or a nut protrudes outward from the back surface of the bottom plate 14. Usually, since the bottom plate 14 is thinner than the length of the tapping screw or rivet, it is difficult to prevent these tips from protruding from the back surface of the bottom plate 14. Thus, when the fastening member protrudes from the back surface of the bottom plate 14, a large uneven structure is formed on the back surface of the bottom plate 14, and the placement of the power generation module 2 on the plane is not stable, and the condenser lens 11 When optical alignment is performed between the power generation receivers 21, it is difficult to set a reference plane. Further, as described below, when forming the laminated body 1 by stacking a plurality of the power generation modules 2, the fastening members protruding from the bottom plate 14 come into contact with the condensing lens 11 of the other power generation modules 2 to cause scratches. There is a possibility that the stacking state may be disturbed by contacting or fitting the packing member such as the buffer substrate 32 or the lens protective film 31 and so on, and the stacking state may be destabilized.

  On the other hand, as described above, when the power receiver 21 is fixed by screw fastening from the back surface of the bottom plate 14, the member exposed on the back surface of the bottom plate 14 is the head of the bolt 26 used for fastening. It becomes only. The protruding amount of the head of the bolt 26 is smaller than the protruding amount when a tapping screw, a rivet, a nut, or the like is used, and a severe uneven structure is not formed on the back surface of the bottom plate 14. Thereby, the power generation module 2 can be stably placed on a flat surface, and the optical alignment can be adjusted and inspected easily and with high accuracy. Further, when the stacked body 1 is configured, the possibility of damaging the condenser lens 11 of the other power generation module 2 is reduced, and a stable stacked structure can be easily formed. From these viewpoints, the bolt 26 used for fastening preferably has a flat top such as a flat bolt.

  In addition, by fixing the power generation receiver 21 by fastening from the back surface of the bottom plate 14, even when the bottom plate 14 is thinned for the purpose of reducing the weight of the power generation module 2, If the thickness of the substrate 21b is sufficiently large, stable fastening can be performed. Thereby, it becomes easy to reduce the weight of the entire power generation module 2. In addition, as a method for fixing the power generating receiver 21 in which the number of members protruding outward from the back surface of the bottom plate 14 is similarly reduced, a method using adhesion, brazing, welding, or the like can be considered in addition to fastening with bolts. However, normally, the substrate 21b of the power generation receiver 21 is made of an aluminum alloy having excellent thermal conductivity, and it is difficult to stably braze or weld the aluminum alloy. Moreover, since the vicinity of the power generation receiver 21 is likely to become a high temperature due to the incidence of sunlight, and the temperature changes drastically, a problem of deterioration of the adhesive occurs when bonding is performed. For these reasons, as described above, as a fixing method for stably fixing the power generation receiver 21 and suppressing the influence of the protrusion of the fastening member from the back surface of the bottom plate 14, the power generation receiver 21 is connected from the back surface of the bottom plate 14 as described above. It is desirable to fix by screw fastening.

(Condensing lens fixing structure)
As described above, in the photovoltaic power generation module 2, the matrix of the condenser lens 11 is supported by the support housing 12 so as to close the opening at the top of the side wall plate 13 of the support housing 12. Here, each condenser lens 11 may be fixed to the support housing 12 in any direction, but is preferably fixed by the following mechanism. That is, as shown in FIG. 3, in the condensing lens 11 having a substantially square outer edge, notches 11d each having a shape in which a circular through hole is divided into a quarter are formed at the tops of the four corners. That is, the four notches 11d are arranged at positions symmetrical with respect to the optical axis O.

  On the other hand, as shown in FIGS. 4 and 5, a lens support frame 22 for fixing the condenser lenses 11 one by one is fixed to the bottom plate 14 of the support housing 12. 4 and 5, illustration of electrical wiring and the like is omitted, and only members necessary for explanation are shown. The lens support frame 22 includes a lens support portion 22a formed as a lattice-like skeleton, and a standing portion 22b that stands on the bottom plate 14 and supports the lens support portion 22a at each intersection of the lattice. The grid intervals P1 and P2 in the lens support portion 22a are equal to the length L of the edge of the outer edge of the condenser lens 11, and at the positions on the bottom plate 14 corresponding to the centers of the grids forming the grid. The power receiver 21 is fixed. And the tap hole 22c is formed in each intersection of a grating | lattice on the upper surface of the lens support part 22a. The position of the upper surface of the lens support portion 22a in the vertical direction is substantially equal to the position of the lowest valley portion 13d of the side wall plate 13 formed in a corrugated shape in accordance with the curved shape of the condenser lens 11.

  The power generation receiver 21 is fixed at a predetermined position of the bottom plate 14 of the support housing 12 and the lens support frame 22 is erected, so that the substantially square condenser lens 11 is placed on each grid of the lens support portion 22a. One is arranged. The edge of the adjacent condenser lens 11 is abutted on the skeleton of the lens support portion 22a. Then, except for the end of the matrix, the tops of the four condenser lenses 11 gather at each intersection of the lattice of the lens support 22a. At the top of each condenser lens 11, a cutout 11 d is formed by dividing a circular through hole into a quarter, so that four cutouts 11 d are gathered at each intersection of the lattice to form one circular shape. A through hole is formed. And the position of this through-hole overlaps the position of the tap hole 22c provided in each intersection of a lattice. In this state, if the bolts 25 are inserted into the through holes and fastened to the tap holes 22 c, the condenser lenses 11 can be fastened and fixed to the lens support frame 22. At the end of the matrix, the condensing lens 11 is similarly fixed to the lens support frame 22 with bolts 25 using one or two notches 11d as appropriate.

  In this way, the condenser lens 11 is fastened to the lens support frame 22 at the positions of the four corners arranged substantially rotationally symmetric with respect to the optical axis O, so that the condenser lens 11 is centered on the optical axis O. The condensing lens 11 is fixed to the lens support frame 22 in a state where a square force is applied. Thereby, as will be described below, the condensing lens 11 and the power generation receiver in the state in which the power generation module 2 is the laminated body 1 being transported and stored, or finally installed on the solar tracking base It is suppressed that the optical alignment between 21 is shifted and the optical axis O of the condenser lens 11 is deviated from the focal position of the power generation receiver 21. That is, the condensing lens 11 is subjected to the influence of heat such as thermal expansion, the application of external force such as transportation impact and strong wind, or the constant weight is continuously applied, so that deformation such as bending is condensed. Even if it occurs in the lens 11, the deformation tends to occur isotropically with respect to the optical axis O. Deformation that is anisotropic (for example, unevenly distributed in one direction) with respect to the optical axis O hardly occurs. Even if the condensing lens 11 is deformed by heat, external force, or the like, the position of the optical axis O of the condensing lens 11 is difficult to shift if the deformation is isotropic with respect to the optical axis O. Thereby, it becomes easy for the power generation module 2 to maintain high power generation performance. In addition, as described above, since the condenser lenses 11 forming the matrix are fixed to the lens support frame 22, even if one condenser lens 11 is deformed, the deformation is It is accommodated by the deformation of the condenser lens 11 and hardly affects other adjacent condenser lenses 11 such as deformation.

  As described above, the condensing lens 11 is fastened at four corners that are substantially rotationally symmetric with respect to the optical axis O. As described above, the notch 11d is formed by dividing the through-hole into a quarter at the top of each condensing lens 11. However, the present invention is not limited to a mode in which one bolt 25 is inserted into one circular through hole formed by assembling four of them and inserted into one tap hole 22c. For example, one circular through hole may be formed in the vicinity of the top of each condenser lens 11 and each condenser lens 11 may be fastened and fixed with four bolts. In this case, four tap holes 22c are formed at each intersection of the lattice of the lens support portion 22a, and four bolts are inserted. However, as described above, the number of places where the screw fastening is performed is set to about ¼ of the entire power generation module 2 by fastening and fixing the top portions of the four adjacent condenser lenses 11 with one bolt 25. Can do. In a situation where a large number of condensing lenses 11 are used to configure one power generation module 2 and a large number of power generation modules 2 are installed, reducing the number of screw fastening points in this way simplifies the manufacturing process. And greatly contribute to the reduction of manufacturing costs.

  In order to prevent rainwater or the like from entering the inside of the support housing 12, the bolt 25 is inserted into the tap hole 22c to fix the condenser lens 11, and then the silicone grease or the like is covered so as to cover the head of the bolt 25. A waterproofing agent is applied. Therefore, in the power generation module 2 after completion of assembly, the bolt 25 for fixing the condenser lens 11 is not visually recognized. In this manner, the top of the condenser lens 11 is fixed to the support housing 12 with the bolt 25 and covered with the waterproof material from above, so that the bolt 25 does not protrude from the outer shell of the power generation module 2. Thereby, when the laminated body 1 is formed using packing members, such as the lens protective film 31 and the buffer substrate 32 as follows, the volt | bolt 25 does not contact these packing members.

(Shape of side wall plate of support housing)
The side wall plate 13 of the support housing 12 may have any shape as long as it can stand between the bottom plate 14 and the condenser lens 11 with almost no gap and can secure a sufficient space inside the support housing 12. However, it is desirable to have a shape having a step structure as shown in FIG. That is, the side wall plate 13 is composed of four plate-like members standing on each side of the substantially rectangular bottom plate 14. The side wall plate 13 constituting each surface is formed in a step shape by bending one plate, and includes a lower plate 13a, an intermediate portion 13c, and an upper plate 13b. The lower plate 13 a rises substantially vertically from each side of the outer edge of the bottom plate 14. The upper plate 13b is formed in parallel with the lower plate 13a so as to be disposed on the outer side in the surface direction of the bottom plate 14 with respect to each side of the bottom plate 14. The intermediate portion 13 c is a portion that connects between the lower plate 13 a and the upper plate 13 b and is substantially parallel to the surface of the bottom plate 14. The width of the step between the upper plate 13 b and the lower plate 13 a, that is, the width S of the intermediate portion 13 c is less than or equal to half the length L of the substantially square side that forms the outer edge of one condenser lens 11. Further, in the direction along the side of the bottom plate 14, the upper plate 13b is formed wider than the lower plate 13a, and the difference in length is equal to the width S of the intermediate portion 13c per place. Yes. As a result, the intermediate portion 13c of the four side wall plates 13 is connected to one, and a step structure having a width S and protruding to the outside of the bottom plate 14 is formed over the entire circumference of the support housing 12. ing.

  Thus, the plate | board material which comprises the side wall board 13 has a level | step difference structure, Therefore The assembled electric power generation module 2 can be simply fixed to a solar tracking stand. In other words, if a substantially rectangular frame (not shown) that is larger than the outer shape of the bottom plate 14 but smaller than the shape of the outer periphery connecting the intermediate portion 13c is attached to the sun tracking base, the frame is in a substantially horizontal state. The intermediate portion 13c can be attached to the sun tracking frame by fitting the power generation module 2 into the frame from the bottom plate 14 side and placing the intermediate portion 13c on the frame. Then, a member having a tapped hole, such as a caulking nut, is appropriately attached to the intermediate portion 13c, and the power generation module 2 can be fixed to the frame by inserting and fastening a bolt into the tapped hole from the frame side. . Thus, the fixing operation of the side wall plate 13 can be performed from the frame side in a state where the frame is substantially horizontal, so that the installation operation of the power generation module 2 can be efficiently performed. The space in which the tool is used for fixing is hardly restricted.

  Moreover, the side wall board 13 has high surface rigidity by having the above level | step difference structures. That is, by having a bent structure in the middle, even if the side wall plate 13 receives force in various directions, it is difficult to be deformed. Therefore, the support housing 12 is not easily deformed even when an external force is applied to the support housing 12 during transportation or after installation of the power generation module 2. In addition, fixing to the frame is performed at the intermediate portion 13c of the side wall surface 13, and the bottom plate 14 to which the power generating receiver 21 that is precisely aligned with the condensing lens 11 is fixed is fixed to the frame. By not using it, it is possible to suppress the deviation of the optical alignment between the power generation receiver 21 and the condenser lens 11 due to the deformation of the bottom plate 14 or the like. In particular, when the support housing 12 is thinned to reduce the weight of the power generation module 2 as a whole and is easily deformed, the effect of improving the surface rigidity and suppressing the deviation of the optical alignment is greatly increased. Enjoyed.

  Furthermore, by using the side wall plate 13 for fixing the solar tracking frame to the frame, the space on the bottom plate 14 for fixing the members such as the power generation receiver 21 is a member for fixing the power generation module 2 to the frame. The power receiver 21 (and the condenser lens 11) can be densely arranged. Further, by having the step structure as described above, the output cable connected to the power generation module 2 and various control connectors are arranged on the back surface of the power generation module 2 so as to be along the step of the intermediate portion 13c. And can be fixed to the frame. Thereby, the accident that a cable and a connector are disconnected by a strong wind or the like can be prevented. As described above, the width S of the intermediate portion 13c is set to ½ or less of the length L of the outer edge side of the condenser lens 11, and the condenser lens 11 condenses incident light at a high magnification. In view of this, the stepped structure as described above provided on the side wall plate 13 hardly interrupts the incident light transmitted through the condenser lens 11 and decreases the power generation efficiency.

  Further, as described above, by providing a step structure on the side wall plate 13 and using it for the installation of the power generation module 2 on the frame of the solar tracking base, the power generation module 2 before installation is laminated as described below. Thus, when the laminated body 1 is configured, the laminated body 1 can be formed in a compact (low bulk). When such a step structure is not provided, it is necessary to provide the power generation module 2 with a member such as a bracket for fixing to the solar tracking platform. Such brackets have been used in the past, but are provided so as to protrude outside the power generation module 2, so that interference between the brackets or between the bracket and other components or packing members of the power generation module 2 is possible. Therefore, it becomes difficult to densely stack the power generation modules 2 to form a compact stacked body 1. Further, when the bracket comes into contact with the condensing lens 11 of another power generation module 2, the condensing lens 11 is damaged. The power generation module 2 having a bracket may be transported in a state where a plurality of power generation modules 2 are stacked together with the frame in a state where the power generation module 2 is mounted and fixed on a frame constituting a solar tracking stand or a transport frame having a similar shape. In this case, the laminate 1 is enlarged by the amount of the frame. On the other hand, according to the configuration having the above step structure, it is not necessary to provide a protruding portion such as a bracket, so that the laminate 1 can be formed densely and the formation of scratches on the condenser lens 11 can be suppressed. It becomes possible.

  In the above example, the step structure is provided on all four side wall plates 13, so that each of the effects described above can be greatly enjoyed. Even when these two surfaces are formed in a flat plate shape, a certain effect can be obtained. In the drawing, the through hole 15 provided in the side wall plate 13 is a vent hole. By providing such a vent 15 on the opposing surface, dew condensation inside the hollow portion of the power generation module 2 is prevented. The vent hole 15 is preferably covered with a mesh member (not shown) in order to prevent or reduce entry of dust, insects, and the like.

[Photovoltaic module stack]
Next, an example of the solar power generation module laminate 1 formed using the concentrating solar power generation module 2 as described above will be described.

  As shown in FIGS. 1 (a) and 1 (b), the photovoltaic power generation module laminate 1 has the above-described concentrating type formed with a support housing 12 and a condensing lens 11 having a curved shape as an outer shell. A plurality of photovoltaic power generation modules 2 are stacked in a direction connecting the bottom plate 14 of the support housing 12 and the condenser lens 11. And the buffer board | substrate 3 with a film is arrange | positioned between each power generation module 2, and it is in the state by which the power generation module 2 and the buffer board | substrate 3 with a film were laminated | stacked alternately. As shown in FIG. 1C, the buffer substrate 3 with a film is obtained by winding a lens protective film 31 made of a resin film around the surface of a buffer substrate 32 made of a plate-like buffer material.

  A pallet 4 is disposed under the lowermost power generation module 2, and a laminated structure including the power generation module 2 and the buffer substrate 3 with a film is placed on the pallet 4. On the other hand, a light-shielding film 7 that blocks sunlight is provided on the condensing lens 11 of the uppermost power generation module 2.

  The laminated structure of the power generation module 2 placed on the pallet 4 and covered with the light-shielding film 7 on the upper surface and the shock-absorbing substrate 3 with the film is formed integrally with the pallet 4 and the light-shielding film 7 with the outer periphery of the fixed film 5 made of resin film It is wrapped around A fixing band 6 made of a string or rubber is further stretched around the outer periphery of the fixing film 5. Each power generation module 2 and the buffer substrate 3 with a film are fixed to the pallet 4 in a state where the movement relative to each other is restricted by the fixed film 5 and the fixed band 6.

  If such a solar power generation module laminate 1 is formed, it can be stored, transported, etc. in a batch with a plurality of power generation modules 2 being laminated. In this laminated body 1, a large number of power generation modules 2 are stacked only via the plate-shaped buffer substrate 3 with a film, and are directly placed on the pallet 4. Further, only the fixed film 5 and the fixed band 6 are disposed on the outer periphery thereof. That is, the height of the laminated body 1 is a height obtained by adding the thickness of the buffer substrate 32 and the thickness of the pallet 4 to the height of all the power generation modules 2 except for the thickness of the film member. . Further, the area occupied by the stacked body 1 is substantially equal to the area occupied by one power generation module 2 except for the portion of the pallet 4. Thus, the laminated body 1 can be formed very compactly. In addition, by stacking a plurality of power generation modules 2, loads and impacts are easily applied evenly throughout the surface of the power generation module 2, and it is difficult to concentrate on specific portions within the surface. Thereby, the deformation | transformation of the support housing | casing 12 by a load and an impact, and the shift | offset | difference of the optical alignment between the condensing lens 11 and the electric power generation receiver 21 are suppressed.

  Since the buffer substrate 32 is interposed between the layers of the stacked power generation modules 2, even if an impact or vibration is applied to the stacked body 1 during transportation or the like, the shock or vibration is absorbed or absorbed by the buffer substrate 32. Alleviated and transmitted to the power generation module 2 of each layer is suppressed. Further, since the lens protective film 31 is wound around the buffer substrate 32, the buffer substrate 32 does not directly contact the surface of the condenser lens 11, but instead the lens protective film 31 contacts the condenser lens 11. Become.

  As will be described below, the buffer substrate 32 is made of paper or foamed resin, and the surface thereof has a concavo-convex structure resulting from the fiber structure or foamed structure, and often has low smoothness. Also, these materials are relatively hard. When the surface of the buffer substrate 32 directly contacts the surface of the condenser lens 11 and receives an impact or vibration during transportation or the like, scratches are easily formed on the surface of the condenser lens 11 due to friction. The scratches may reduce the light transmittance and light condensing property of the condensing lens 11 and may reduce the power generation performance of the power generation module 2. On the other hand, when the lens protective film 31 is interposed between the condenser lens 11 and the buffer substrate 32, the buffer substrate 32 is prevented from coming into contact with the condenser lens 11 and being damaged. The lens protective film 31 is made of a resin film, and the resin film generally has a very smooth surface, is soft, and has high flexibility. Therefore, even if the lens protective film 31 is in contact with the condenser lens 11, it is less likely to damage the condenser lens 11 than in the case where the buffer substrate 32 is in direct contact. Further, the lens protective film 31 is easily adhered to the condensing lens 11 which is also made of a resin, and even if the laminated body 1 receives an impact or vibration, the lens protective film 31 is not easily displaced from the condensing lens 11. As a result, the surface of the condenser lens 11 is less likely to be scratched.

  Since the lens protective film 31 is easily maintained in close contact with the condenser lens 11, as described above, the lens protective film 31 is wound around the buffer substrate 32 to form the buffer substrate 3 with film. Even if the laminated body 1 using this is subjected to impact or vibration, the lens protective film 31 is difficult to move with respect to the condenser lens 11. Only the buffer substrate 32 causes movement and deformation with respect to the power generation module 2, and absorbs and relaxes the applied shock and vibration. Thus, by using the buffer substrate 32 and the lens protective film 31 together, it is possible to achieve both a buffering action and prevention of the condensing lens 11 from being damaged.

  As a specific material of the buffer substrate 32, when the laminated body 1 receives an impact or vibration from the outside, the shock absorber or the vibration is absorbed and reduced, and damage to the power generation module 2 can be prevented or sufficiently suppressed. Anything is acceptable. Specific examples of the buffer substrate 32 include those made of paper such as corrugated cardboard, or those made of foamed resin from the viewpoint of being a general-purpose product having a high buffering action and available at low cost. Examples of the foamed resin include those made of polystyrene resin, polypropylene resin, and urethane resin.

  On the other hand, the lens protective film 31 may be made of any resin, but preferably has stretch properties. As a result, the condenser lens 11 of the power generation module 2 is in close contact with the condensing lens 11 and can be easily wound around the plate-like buffer substrate 32 without wrinkles or undulations. Further, even when the lens protection film 31 is heated by irradiation of sunlight or the like during transportation of the laminated body 1, in order to maintain the function of protecting the condenser lens 11, it is also attached to the condenser lens 11. In order to prevent sticking and transfer, the lens protection film 31 preferably has a heat resistant temperature of 65 ° C. or higher. Specifically, as the lens protective film 31, it is preferable to use a polyolefin-based resin, particularly a polyethylene-based resin, as a resin having high heat resistance that can be easily formed into a stretchable film. Examples of the polyethylene resin include low density polyethylene (LDPE), linear low density polyethylene (LLDPE), metallocene LLDPE, ethylene-vinyl acetate copolymer (EVA), ethylene- (meth) acrylate polymer, ethylene- A (meth) acrylic acid copolymer etc. can be mentioned. These may be used alone or in combination of two or more. As described above, since the resin foam structure may damage the condensing lens 11, the resin constituting the lens protection film 31 is preferably not foamed.

  Actually, when the laminated body 1 is formed by directly contacting the condensing lens 11 of the power generation module 2 with the buffer substrate 32 made of corrugated cardboard or foamed resin without using the lens protective film 31 together, the condensing is performed after transportation. While many scratches were confirmed on the lens 11, no scratches were formed on the condenser lens 11 when the lens protective film 31 made of polyethylene was wound around the buffer substrate 32.

  Since the lens protective film 31 plays a role of suppressing the formation of scratches on the condensing lens 11 by being in close contact with the condensing lens 11, it is preferable that the lens protective film 31 has a smooth surface. The smoothness of the material itself (smoothness when the lens protective film 31 is stretched and evaluated without wrinkles and undulations) is preferably 500 nm or less in terms of arithmetic average roughness Ra. Moreover, it is preferable that the unevenness | corrugation of the surface in the state arrange | positioned on the surface of the condensing lens 11 is 2 mm or less. If it is the polyolefin-type resin which has the above stretch properties, it will be easy to achieve such a smooth surface. In addition, from the viewpoint of effectively suppressing the formation of scratches on the condensing lens 11 and facilitating winding around the buffer substrate 32 while maintaining smoothness, the lens protective film 31 may have a thickness of 50 μm or less. preferable. On the other hand, from the viewpoint of ensuring the handleability, the thickness is preferably 5 μm or more.

  As described above, the fixing film 5 holds the stacked state of the power generation module 2 and the buffer substrate 3 with the film and fixes the power generation module 2 to the pallet 4, as well as external objects such as rainwater and dust inside the stacked body 1. It also plays a role in preventing the invasion. As the fixing film 5, it is preferable to use a film made of the same resin as the lens protective film 31 as described above. In particular, in view of the role of the fixing film 5 as described above, it is preferable that the fixing film 5 also has stretch properties so that the fixing film 5 can be wound around the outer periphery of the laminated body 1 without a gap.

  The light shielding film 7 may be any film as long as it can block the transmission of sunlight, such as a resin film mixed with a substance that absorbs or scatters sunlight. When the light-shielding film 7 is not provided, when sunlight is incident on the power generation module 2 positioned at the uppermost layer of the laminate 1 during transportation of the laminate 1, the light is collected by the condenser lens 11 and generated. There is a possibility of causing unexpected damage or malfunction to the module 2 or the like. The light shielding film 7 plays a role of preventing such a situation. The light shielding film 7 may be hung on the surface of the uppermost power generation module 2 in the form of a sheet, or, like the lens protection film 31, is wound around the buffer substrate 32 and disposed on the uppermost power generation module 2. May be. Further, when the light shielding film 7 is made of a resin having a smooth surface and there is no possibility of scratching the condenser lens 11, the light shielding film 7 is directly brought into contact with the condenser lens 11 of the uppermost power generation module 2. When the light shielding film 7 may damage the condensing lens 11, a lens protective film 31 may be appropriately interposed between the condensing lens 11 and the light shielding film 7. When the buffer substrate 32 can sufficiently shield sunlight, the buffer substrate 3 with the same film as that sandwiched between the layers is disposed on the uppermost power generation module 2 instead of the light shielding film 7. May be.

  As the pallet 4, a general-purpose pallet used for loading and transporting articles can be used. The pallet 4 is preferably provided with a drain hole or a grid so that water that has entered the inside of the support housing 12 of the power generation module 2 due to rainfall or the like during transportation can be discharged. If rainwater accumulates inside the support housing 12, it may lead to corrosion of the bottom plate 14 of the support housing 12.

  In the configuration described above, as shown in FIG. 1, the lens protective film 31 is wound around the outer periphery of the buffer substrate 32 and constitutes the laminate 1 in the state of the buffer substrate 3 with a film. Thus, once the lens protective film 31 is smoothly wound around the buffer substrate 32, the power generation module 2 and the buffer substrate 3 with the film are alternately stacked, so that the buffer is provided between the layers of the power generation module 2. A state in which the substrate 32 is interposed and the surface of the condenser lens 11 is protected by the lens protective film 31 can be easily formed. It is easy to disassemble the laminate 1 after transportation. Further, it is easy to reuse the lens protection film 31. However, in view of the role of the lens protective film 31 for protecting the condensing lens 11 from being damaged, the lens protective film 31 only needs to be disposed between the condensing lens 11 and the buffer substrate 32, and is not necessarily as described above. In addition, the buffer substrate 3 with a film wound around the outer periphery of the buffer substrate 32 one or more times may not be taken. For example, although the handling property at the time of formation and disassembly of the laminated body 1 and the efficiency of reuse are low, the lens protection film 31 is prepared as a sheet body independent of the buffer substrate 32, and the power generation module 2 → the lens protection film 31. It may be laminated in the order of → buffer substrate 32 → power generation module 2 →. Alternatively, the lens protection film 31 may be wound around the power generation module 2 and alternately stacked with the buffer substrate 32.

  As described above, when the buffer substrate 3 with a film is formed by winding the lens protective film 31 around the buffer substrate 32, the state of being wound around the outer periphery of the buffer substrate 32 is maintained only by the self-adhesiveness of the lens protective film 31. Alternatively, as shown in FIG. 1C, the winding end portion 33 may be joined to the middle portion of the lens protection film 31 by heat fusion or the like. However, as described above, the buffer substrate 32 effectively absorbs and relaxes the impact applied to the laminated body 1 by causing movement and deformation of the power generation module 2, while the lens protection film 31 is It is in close contact with the surface of the condenser lens 11 and does not follow the movement or deformation of the buffer substrate 32, thereby protecting the condenser lens 11 from being damaged. Therefore, it is better that the lens protection film 31 is not fixed to the buffer substrate 32 in a state where it cannot move with respect to the buffer substrate 32. If the lens protective film 31 is wound around the buffer substrate 32 and the winding end portion 33 is joined to the lens protective film 31 itself by thermal fusion or the like as shown in FIG. It is not bonded to the substrate 32, and the space between the buffer substrate 32 and the lens protective film 31 is within a margin formed between the buffer substrate 32 and the lens protective film 31 when the lens protective film 31 is wound. Relative movement is allowed. From the viewpoint of effectively suppressing the formation of scratches on the condensing lens 11, the joining portion 31 by heat fusion or the like is not in the condensing lens 11 side of the lower power generation module 2 in the laminated body 1 but in the upper power generation. It is preferable to arrange the module 2 on the bottom plate 14 side. Further, the number of times the lens protection film 31 is wound around the outer periphery of the buffer substrate 32 is not limited to one, and may be two or more. By winding the lens protective film 31 twice or more, the formation of scratches on the condenser lens 11 due to impact or vibration during transportation can be further suppressed.

  As described above, in the power generation module 2 constituting the stack 1, (1) the power generation receiver 21 is fixed to the bottom plate 14 of the support housing 12 from the back side, and (2) the condenser lens 11. Are fixed to the lens support frame 22 at the four corners from above, and (3) the side wall plate 13 of the support housing 12 preferably has a step structure. Since each power generation module 2 constituting the laminate 1 has these configurations, the laminate provided by the laminate structure itself of the laminate 1 using the buffer substrate 32 and the lens protective film 31 as described above. The effect of forming 1 in a compact manner and the effect of both reducing impact and preventing the condensing lens 11 from being damaged are further enhanced.

  That is, (1) since the power generating receiver 21 is fixed to the bottom plate 14 of the support housing 12 from the back side, a member protruding to the back side of the bottom plate 14 is a relatively small and flat member such as the head of the bolt 26. Can only be. Further, (2) the condenser lens 11 is fixed to the support housing 12 by the method described above, and the head of the bolt 25 used for fixing is covered with a waterproof material, so that the condenser lens 11 The member for fixing does not protrude outside the power generation module 2. (3) By adopting a method of fixing the power generation module 2 to the frame of the solar tracking frame using the step structure of the side wall plate 13, a bracket or the like for fixing to the frame protrudes from the support housing 12. There is no need to provide them. Thus, since there are few members which protrude outside the power generation module 2, a large number of power generation modules 2 can be integrated by simply stacking them with the buffer substrate 3 with a film interposed therebetween, and a compact and stable laminate 1 can be obtained. Can be configured.

  Moreover, since there are few members which protrude outside the electric power generation module 2, it is prevented that those members contact and give an impact to the adjacent electric power generation module 2 in the laminated body 1, and damage is prevented. In particular, (1) the pointed member does not protrude greatly from the bottom plate 14 for fixing the power generation receiver 21, and (3) the side wall plate 13 or the bottom plate of the support housing 12 is a bracket or the like for fixing to the frame. By not projecting from 14, the members projecting from one power generation module 2 are effectively suppressed from forming scratches on the condensing lens 11 of another power generation module 2 disposed in the lower layer. Moreover, when those members protrude from the power generation module 2, the packing members such as the buffer substrate 32, the lens protection film 31, and the fixing film 5 are brought into contact with or caught on, and the packing members are easily damaged. Then, there is a possibility that the impact mitigating function and the lens protecting function of these packing members are deteriorated. In addition, it becomes difficult to reuse these packing materials. On the other hand, since there are few members protruding as described above, the formation of scratches on the condenser lens 11 can be effectively suppressed, the function of the packaging material can be easily maintained, and the reusability can be increased. Can do.

  Further, the power generation module 2 has the above-described configurations (1) to (3), thereby having high physical strength and high resistance to impact and vibration. Specifically, (1) the power generation receiver 21 is firmly fixed to the bottom plate 14 of the support housing 12 by screw fastening from the back surface of the bottom plate 14, and (2) the condenser lens 11 is attached to the lens support frame 22 at the four corners. By being fixed, the optical axis O is not easily displaced due to deformation of the condenser lens 11 even when subjected to an impact or the like. (3) The side wall plate 13 of the support housing 12 has a step structure. The surface rigidity of the body 12 is high. With these effects, even if an impact or vibration is applied to the laminate 1 during transportation, the probability of physical damage or optical alignment shift occurring in each power generation module 2 is reduced.

  As mentioned above, although embodiment of this invention was described in detail, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of this invention. For example, as a power generation module that constitutes a laminate together with a buffer substrate and a lens protective film similar to the above, a concentrating solar power generation module having a support housing and a condensing lens can be used regardless of the structure details. Can be applied. In addition, the power receiver fixing method, the condensing lens fixing method, the shape of the side wall plate of the support housing, etc. described as the preferred configuration of the concentrating solar power generation module above are not flat surfaces but flat plate concentrators. The present invention can be applied to various concentrating solar power generation modules when including an optical lens.

DESCRIPTION OF SYMBOLS 1 (Solar power generation module) Laminate body 2 (Condensation type solar power generation module 3) Buffer board 4 with film Pallet 5 Fixed film 6 Fixed band 7 Light-shielding film 11 Condensing lens 11d Notch 12 Support housing 13 Side wall plate 13a Lower plate 13b Upper plate 13c Intermediate portion 14 Bottom plate 21 Power generation receiver 21b Substrate 22 Lens support frame 22a Lens support portion 22b Standing portion 22c Tap hole 25 Bolt 26 Bolt

Claims (9)

A plurality of power generation receivers for performing solar power generation, a plurality of resin condensing lenses for condensing sunlight on the power generation receiver, and a support for housing and fixing the power generation receiver and supporting the condensing lens A concentrating solar power generation module having a housing;
The buffer substrate made of a plate-shaped buffer material is alternately laminated,
A photovoltaic module laminate, wherein a lens protective film made of a resin film is disposed between the photovoltaic module and the buffer substrate in contact with at least the surface of the condenser lens. .   The photovoltaic module laminate according to claim 1, wherein the lens protective film is wound around a surface of the buffer substrate.   The said photovoltaic power generation module laminated body is mounted on the pallet, the outer peripheral part is covered with the fixed film which consists of a resin film, and it is being fixed to the said pallet. Solar power module stack.   4. The photovoltaic module laminate according to claim 1, wherein at least one of the lens protective film and the fixed film is a stretch film made of a polyolefin-based resin. 5.   5. The photovoltaic module laminate according to claim 1, wherein the buffer substrate is made of paper or foamed resin. 6.   6. The photovoltaic power module stack according to claim 1, wherein an upper surface of the photovoltaic power module stack is covered with a light shielding member that blocks sunlight. A grid-like lens support frame having a grid interval corresponding to the size of each condenser lens is fixed to the support housing.
The said condensing lens is being fixed to the said lens support frame by the screw fastening from the outer side of the said condensing lens in the several point arrange | positioned symmetrically centering | focusing on the optical axis. The solar power generation module laminated body of any one of these. The support housing includes a bottom plate to which the power generation receiver is fixed, and a side wall plate standing on an outer edge portion of the bottom plate,
The side wall plate includes a lower plate located on the bottom plate side, an upper plate located on the condenser lens side and disposed on the outer side of the bottom plate in the surface direction, and between the lower plate and the upper plate. The solar power generation module laminate according to any one of claims 1 to 7, wherein the solar power generation module laminate has a step structure including an intermediate portion connecting the two.   The solar power generation according to any one of claims 1 to 8, wherein the power generation receiver is fixed by screwing to the bottom plate from an outer surface of the bottom plate of the support housing. Module laminate.

Images