JP2005175236A - Solar cell module - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a solar cell module by which cost reduction is attained and execution work is extremely easy, while securing mechanical strength which is equivalent to or higher than that of a conventional solar cell module with a frame. <P>SOLUTION: In the solar cell module 1, a solar cell panel 2 is supported in a framework in which a photovoltaic device group 9 performing photoelectric conversion is sealed by a covering material. A fitting mounting member to fix on the installation surface 6 of a structure is provided on a non-light-receiving surface which is a backside of the solar cell panel 2. The fitting mounting member comprises a slide member 3 which is fixed to the non-light-receiving surface of the solar cell panel 2, and a guide member 7 which is fixed to the installation surface 6 of the structure and guides the slide member 3 to be fitted with it. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a solar cell module comprising a solar cell panel that performs photoelectric conversion and a member for attaching the solar cell panel to a structure such as a roof or a wall surface.

  Many solar cell modules have been installed in the past as solar power generation systems that are installed on structures such as roofs and wall surfaces to supplement household power, and are used as frames on the four sides of solar cell panels that perform photoelectric conversion. Frame is provided. As this type of solar cell module, for example, a solar cell panel using a glass substrate is used, and an aluminum frame is used as a frame surrounding its four sides.

  FIG. 21 is an example of a conventional solar cell module with a frame, in which (a) is a plan view showing a state seen from the light receiving surface side, and (b) is a rear view showing a state seen from the non-light receiving surface side. . In FIG. 21, 101 is a solar cell module, 102 is a long side aluminum frame, 103 is a short side aluminum frame, 104 is a photovoltaic element, 105 is a mounting hole, and 106 is a terminal box.

  As shown in the figure, a conventional solar cell module 101 is provided with an aluminum frame on four sides of a solar cell panel in which a plurality of photovoltaic elements 104 are arranged vertically and horizontally. After being inserted into the long side end of the panel, the short side aluminum frame 103 is further inserted into the short side end of the solar cell panel, and the frames of the long side and the short side are fixed with tapping screws or the like. Generally, a sealant is applied to the panel holding portion of the aluminum frame, and the solar cell panel and the aluminum frame are fixed by hardening the sealant.

  FIG. 22 is a schematic diagram showing a structure for fixing a conventional solar cell module with an aluminum frame to a gantry. In FIG. 22, 101 is a solar cell module, 102 is a long-side aluminum frame, 107 is a frame, 108 is a fastening member, and 109 is a structure.

  As shown in the drawing, on the back surface of the long-side aluminum frame 102 of the solar cell module 101, as shown in FIG. 21B, there are 8 to 10 mounting holes 105 (16 to 20 in total on both long sides). These mounting holes 105 are used to fix the frame 107 fixed to the structure 109 with fastening members 108 such as bolts and nuts.

  As a technique related to such a solar cell module with a frame, there is a solar cell module proposed in JP-A-10-294485 (Patent Document 1), JP-A 2003-529696 (Patent Document 2), or the like. It is done.

JP-A-10-294485 JP 2003-529696 A

  However, in the conventional solar cell module 101 with a frame, after inserting a solar cell panel into the long side aluminum frame 102, the sealant is filled, and after waiting for the sealant to cure, the short side aluminum frame 103 is attached, and the long side and short side are attached. Since the frames with the sides are fixed with tapping screws or the like, the assembly work takes time and workability is not good. Furthermore, the aluminum frame that sandwiches and holds the solar cell panel has a complicated shape, and there is a problem that the forming process increases the manufacturing cost.

  In addition, in order to install the conventional solar cell module 101 with a frame on the mount 107, it is necessary to fasten and fix it using 16 to 20 fastening members 108 such as bolts and nuts per module. Therefore, when the installation area of the solar cell panel is increased, the number of the fastening members 108 is also increased, so that there is a problem that the construction work is very troublesome and the work man-hour is increased.

  The present invention has been made in view of the above-mentioned problems, and can ensure cost reduction while ensuring mechanical strength equal to or higher than that of a conventional solar cell module with a frame, and can be used for extremely high construction work. The object is to provide an easy solar cell module.

In order to achieve the above object, a solar cell module according to the present invention is a solar cell module formed by supporting a solar cell panel in which a photovoltaic element group for performing photoelectric conversion is sealed with a covering material in a frame. ,
The non-light-receiving surface to be the back surface of the solar cell panel is provided with a fitting attachment member for fixing to the installation surface of the structure,
The fitting attachment member includes a slide member fixed to the non-light-receiving surface of the solar cell panel, and a guide member fixed to the installation surface of the structure to guide the slide member and fit to the slide member. It is characterized by.
In the solar cell module, it is preferable that one of the slide member and the guide member is a male fitting member and the other is a female fitting member.
Moreover, it is preferable that the slide member has only one degree of freedom in the XYZ axes when the slide member and the guide member are fitted.
Furthermore, it is preferable that the non-light-receiving surface of the solar cell panel is provided in a plurality of rows so that a plurality of slide members run in parallel.
And it is preferable that the said slide member is arrange | positioned in parallel along the longitudinal direction of the non-light-receiving surface of the said solar cell panel.
Furthermore, it is preferable that the slide member is bonded and fixed to a non-light-receiving surface of the solar cell panel.
In addition, it is preferable that the slide member is disposed immediately below a gap portion between photovoltaic elements constituting the solar cell panel.
Or it is preferable to distribute | arrange the said slide member directly under the bypass diode main body connected between the photovoltaic elements which adjoin the solar cell panel.
Further, the solar cell panel has a translucent surface member on the surface of the photovoltaic element group and an insulating film on the back surface, and a sealing material is provided between the translucent surface member and the insulating film. It is preferable that the sealing member is formed, and a reinforcing member is laminated on the back surface of the insulating film and integrally formed by a heating vacuum laminating method, and the slide member is fixed to the reinforcing member.
Furthermore, the reinforcing member is preferably a flat plate.
The reinforcing member is preferably a metal plate.

  The solar cell module according to the present invention has the following excellent effects.

  That is, the non-light-receiving surface that is the back surface of the solar cell panel is provided with a fitting attachment member for fixing to the installation surface of the structure, and this fitting attachment member is fixed to the non-light-receiving surface of the solar cell panel. And a guide member that is fixed to the installation surface of the structure and that guides and fits the slide member. Thus, the conventional solar cell module with a frame is used as the installation surface of the structure. Since it is not necessary to fasten and fix many fastening members as in the case of fixing, the construction work is extremely easy. Furthermore, since the slide member has a structure that fits with a guide member fixed to the installation surface, the slide member itself can replace a part of the function of the conventional fastening member, and the fastening member can be reduced. Cost can be greatly reduced.

  Since one of the slide member and the guide member is a male fitting member and the other is a female fitting member, there is a degree of freedom in design.

  Further, when the slide member and the guide member are fitted, the slide member has only one degree of freedom in the XYZ axes, so the solar cell module is fixed in the two axis directions, and only the remaining one axis direction is used. Since regulation may be required, the number of construction sites for fixing work is greatly reduced, and the workability of construction work is greatly improved.

  Furthermore, since a plurality of slide members are provided in a plurality of rows on the non-light-receiving surface of the solar cell panel so that they run side by side, the central portion of the solar cell panel bends against stress from the outside such as wind pressure. This can be prevented and the stress applied to the solar cell panel can be sufficiently relaxed.

  And since the said slide member is arrange | positioned in parallel along the longitudinal direction of the non-light-receiving surface of the said solar cell panel, it fixes to the non-light-receiving surface of a solar cell panel rather than arrange | positioning a slide member in the width direction. The number of slide members can be reduced. Therefore, it has the same mechanical strength as a conventional solar cell module and can reduce the manufacturing cost of the solar cell module.

  Furthermore, since the slide member is bonded and fixed to the non-light-receiving surface of the solar cell panel, the slide member can be fixed without mechanically scratching the back surface of the solar cell panel. Moreover, since the position which fixes a slide member can be determined according to the intensity | strength after producing a solar cell panel, there exists a freedom degree of design. Furthermore, it is possible to proceed with the fixing operation of the plurality of slide members to the solar cell panel at the same time, and after attaching the two long side frames as in the conventional solar cell module with a frame, No complicated work such as fixing is required.

  In addition, by arranging the slide member directly below the gap portion between the photovoltaic elements constituting the solar cell panel, it is possible to reinforce the solar cell panel where stress is most concentrated with the slide member, The mechanical strength of the solar cell module can be improved.

  Alternatively, the bypass diode element can be prevented from being damaged by arranging the slide member directly below the bypass diode element connected between the adjacent photovoltaic elements constituting the solar cell panel.

  In addition, the solar cell panel has a translucent surface member on the surface of the photovoltaic element group and an insulating film on the back surface, and a sealant seals between the translucent surface member and the insulating film. The reinforcing member is laminated on the back surface of the insulating film and integrally formed by a heating vacuum laminating method, and the slide member is fixed to the reinforcing member. A member can be fixed and manufacture of a solar cell panel is easy.

  Furthermore, since the reinforcing member is a flat plate, it is easy to heat and vacuum laminate the reinforcing member at the time of manufacturing the solar cell panel, and it is easy to bond and fix the slide member.

  And since the reinforcing member is a metal plate, it is easy to heat and vacuum laminate the reinforcing member at the time of manufacturing the solar cell panel, and the solar cell panel can be reinforced from the back surface to increase its strength. .

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings, but the present invention is not limited to this embodiment.

  FIG. 1 is a perspective view showing a solar cell module according to an embodiment of the present invention as viewed from the light-receiving surface side, FIG. 2 is a side view showing the solar cell module of this embodiment, and FIG. The perspective view which shows the installation condition of a battery module, FIG. 4 is a side view which shows the state which fixed the solar cell module of this embodiment to the installation surface of a structure, FIG. 5 is the solar cell panel in the solar cell module of this embodiment. It is a schematic diagram which shows a cross-sectional structure. In these drawings, 1 is a solar cell module, 2 is a solar cell panel, 3 is a slide member, 4 is a photovoltaic element, 5 is an adhesive, 6 is an installation surface of the structure, 7 is a guide member, and 8 is the sun. The sliding direction of the battery module, 9 is a photovoltaic element group, 10 is a sealing material, 11 is a translucent surface member, 12 is an insulating film, and 13 is a reinforcing member.

  As shown in the drawing, the solar cell module 1 of the present embodiment was fixed to a non-light-receiving surface serving as the back surface of the solar cell panel 2 on a guide member 7 fixed to an installation surface 6 of a structure such as a roof or a wall surface. The slide member 3 is attached to the structure by fitting. That is, the non-light-receiving surface of the solar cell panel 2 is provided with a fitting attachment member for fixing to the installation surface 3 of the structure, and this fitting attachment member is provided on the non-light-receiving surface of the solar cell panel 2. The slide member 3 is fixed, and the guide member 7 is fixed to the installation surface 6 of the structure and guides the slide member 3 to be fitted thereto. Therefore, it is not necessary to fasten and fasten a large number of fastening members as in the case of fixing the conventional solar cell module with a frame to the installation surface of the structure, so that the construction work is extremely easy. Furthermore, since the slide member 3 is structured to be fitted to the guide member 7 fixed to the installation surface 6 of the structure, the slide member itself substitutes for a part of the function of the conventional fastening member, Fastening members can be reduced, and costs can be greatly reduced.

  As shown in FIG. 5, in the solar cell panel 2 in the present embodiment, a translucent surface member 11 is disposed on the surface of the photovoltaic element group 9, and an insulating film 12 is disposed on the back surface of the photovoltaic element group 9. Then, the space between the translucent surface member 11 and the insulating film 12 is sealed with a sealing material 10, and a flat reinforcing member 12 is laminated on the back surface of the insulating film 12, and a heating vacuum laminating method is performed. The slide member 3 is fixed to the reinforcing member 13. Therefore, after the solar cell panel 2 is heated and vacuum-laminated, the slide member 3 can be fixed to the reinforcing member 13 located on the back surface thereof, so that the solar cell panel 2 can be easily manufactured.

  As shown in FIGS. 2 and 4, the slide member 3 is bonded and fixed to the non-light-receiving surface of the solar cell panel 2 using an adhesive 5. Therefore, the slide member 3 can be fixed without mechanically damaging the back surface of the solar cell panel 2. Moreover, after producing the solar cell panel 2, the fixed position of the slide member 3 can be determined according to the intensity | strength, and there exists a freedom degree of design.

  Furthermore, the non-light-receiving surface of the solar cell panel 2 is provided in a plurality of rows so that a plurality of slide members 3 run in parallel, and the installation surface 6 of the structure corresponds to the number of the slide members 3. Thus, a plurality of rows of guide members 7 are fixed. Since the plurality of slide members 3 are provided on the non-light-receiving surface of the solar cell panel 2, it is possible to prevent the central portion of the solar cell panel 2 from being bent with respect to stress from the outside such as wind pressure. 2 can be sufficiently relaxed. Thus, even if a plurality of slide members 3 are provided, the slide members 3 are bonded and fixed as described above, so that the fixing operation of the plurality of slide members 3 to the solar cell panel 2 can be advanced simultaneously. Thus, unlike the conventional solar cell module with a frame, a complicated operation of further fixing the short side frame after the two long side frames are attached is not required.

  Hereinafter, each component of the solar cell module 1 of the present embodiment will be described in detail.

[Solar panel]
Regarding the solar cell panel 2 in the present invention, there is no particular limitation, and the photovoltaic element 4 is sealed with a weathering covering material such as a film and a sealing material so that an electrical output can be taken out. Say. Examples of the photovoltaic element 4 used in the solar cell panel 2 include an amorphous microcrystalline silicon stacked photovoltaic element, a crystalline silicon photovoltaic element, a polycrystalline silicon photovoltaic element, and an amorphous silicon photovoltaic element. , Copper indium selenide photovoltaic elements, compound semiconductor photovoltaic elements, and the like. However, since the thin film photovoltaic element has flexibility, it is preferable for producing the solar cell module 1 having a large area. In particular, a photovoltaic element in which a semiconductor active layer or the like as a light conversion member is formed on a flexible conductive substrate is easy to increase in area and has high reliability against bending stress. For example, a stacked photovoltaic element including an amorphous microcrystal silicon type three-layer structure is particularly preferable.

[Photovoltaic element group]
Since there is a limit to the electrical characteristics (voltage, output, etc.) of the single photovoltaic element, a plurality of photovoltaic elements 4 are electrically connected in series and parallel so as to obtain the desired electrical characteristics. This is referred to as a photovoltaic element group 9. Each photovoltaic element 4 has a positive electrode and a negative electrode so that it can be serially paralleled.

  In addition, a bypass diode (not shown) is connected to the photovoltaic element group 9 in parallel in order to prevent the photovoltaic element 4 from being reverse-biased during light shielding. As this bypass diode, a general rectifying silicon diode, a Schottky barrier diode, or the like is useful.

[Encapsulant]
The sealing material 10 is required to have weather resistance, adhesiveness, filling property, heat resistance, cold resistance, impact resistance, etc., and ethylene-vinyl acetate copolymer (EVA), ethylene-ethyl acrylate copolymer (EEA), polyolefin resin, urethane resin, silicone resin, or fluorine resin. Among these, EVA has balanced physical properties for solar cell applications and is preferably used, but is not limited thereto.

(Translucent surface member)
The translucent surface member (surface coating material) 11 is required to have a performance for ensuring long-term reliability in outdoor exposure of the solar cell panel 2 including weather resistance, contamination resistance, and mechanical strength. A vinylidene fluoride resin, a polyvinyl fluoride resin, a tetrafluoroethylene-ethylene copolymer (ETFE), or the like is preferably used, but is not limited thereto.

[Insulating film]
The insulating film 12 is provided to maintain insulation between the photovoltaic element group 9 and the reinforcing member 13 laminated on the back surface, and a material such as polyethylene terephthalate (PET) or nylon is used. Moreover, the film which laminated | stacked integrally the resin similar to the above-mentioned sealing material 10 may be sufficient.

(Reinforcing member)
The reinforcing member 13 used on the non-light-receiving surface side of the solar cell panel 2 in the present embodiment can use a material having weather resistance. For example, a metal plate such as a stainless steel plate, a plated steel plate, or a galvalume steel plate is used, but the present invention is not limited to this. The reinforcing member is preferably a flat plate. When the reinforcing member 13 is a flat plate, it is easy to heat and vacuum laminate the reinforcing member 13 at the time of manufacturing the solar cell panel 2, and the slide member 13 can be easily bonded and fixed. Furthermore, when the reinforcing member 13 is a metal plate, the solar cell panel can be reinforced from the back surface to increase its strength.

(Slide member)
The slide member 3 in the present invention is a member having a shape that can be fitted to the convex portion or concave portion of the guide member 7 fixed to the installation surface 6 such as a roof or a wall surface. The long member which has only the freedom degree of 1 axial direction among these. When the slide member 3 and the guide member 7 are fitted to each other, the slide member 3 has only one degree of freedom in the XYZ axes, so the solar cell module 1 is fixed in the two axis directions, and only the remaining one axis direction. It is only necessary to regulate this, and the number of fixed work places is greatly reduced, and the workability of construction work is greatly improved.

  Further, one of the slide member 3 and the guide member 7 may be a male fitting member and the other may be a female fitting member, and there is a degree of freedom in design. As shown in FIG. 6, as the slide member 3, for example, a member having a convex portion having a T-shaped or H-shaped cross section from the reinforcing member 13 located on the back surface of the solar cell panel 2, or an opening concave portion is provided in the solar cell panel. A channel-shaped member facing the installation surface 6 from the reinforcing member 13 located on the back surface of the plate 2 can be used.

  The slide member 3 in the present invention also has a function of reinforcing the mechanical strength of the solar cell panel 2, and the mechanical strength is at least sufficient to satisfy the wind pressure strength of the solar cell module 1. is necessary.

  In order to maintain the mechanical strength of the solar cell module 1, it is effective to arrange the slide members 3 in a plurality of rows so as to run in parallel along the longitudinal direction of the solar cell module 1. By arranging, the number of slide members 3 attached to the solar cell panel 2 can be reduced as compared with the case of arranging along the width direction. As a result, the manufacturing process can be shortened and the manufacturing cost can be reduced.

  The material of the slide member 3 in the present invention is preferably a material having the above-described mechanical strength, and specifically includes steel, FRP, aluminum, and a composite of these materials.

  In addition, the slide member 3 in the present invention is preferably provided immediately below the gap portion between the photovoltaic elements 4 of the photovoltaic element group 9 constituting the solar cell module 1. The gap between the photovoltaic element 4 and the photovoltaic element 4 of the photovoltaic element group 9 is the mechanically weakest part, and a slide member 3 wider than the gap is provided immediately below the gap. As a result, the mechanical strength of the solar cell module 1 is greatly improved.

  Furthermore, the slide member 3 in the present invention is preferably provided immediately below the bypass diode element of the photovoltaic element group 9 constituting the solar cell panel 2. The bypass diode element is a portion that is vulnerable to stress. By providing a slide member directly below the bypass diode element, the bypass diode element can be prevented from being damaged or broken.

  As described above, the slide member 3 is bonded and fixed to the reinforcing member 13 located on the back surface of the solar cell panel 2 using the adhesive 5, and a plurality of slide members 3 run side by side on the back surface of the solar cell panel 2. Are arranged in a plurality of rows.

〔adhesive〕
The adhesive 5 used in the present invention is required to have weather resistance and water resistance. As the adhesive 5, an epoxy adhesive such as a silicon sealant, a silicon adhesive, or the like can be used.

(Guide member)
The guide member 7 in the present invention is a member that is fixed to the installation surface 6 of a structure such as a roof or a wall surface and has a shape that can be fitted to the slide member 3 that is fixed to the back surface of the solar cell panel 2 described above. Yes, one of the slide member 3 and the guide member 7 may be a male fitting member and the other may be a female fitting member. For example, when the reinforcing member 13 is a member having a convex portion having a T-shaped or H-shaped cross section, a channel shape in which the opening concave portion faces the back surface of the solar cell panel 2 as the guide member 7. These members can be used. When the reinforcing member 13 is a channel-shaped member with the opening concave portion facing the installation surface 6, a member having a convex portion having a T-shaped or H-shaped cross section is used as the guide member 7. The guide member 7 is also preferably a long member. However, when the installation surface to which the guide member 7 is attached is composed of a member having sufficient mechanical strength, the guide member 7 is not necessarily long. There is no need to be a short piece member. In this case, it is necessary that at least two guide members 7 are fitted to one slide member 3 to maintain the bonding strength with the slide member 3.

[Heating vacuum lamination method]
The vacuum laminating method used as a method for manufacturing the solar cell panel 2 in the present embodiment is used for manufacturing the solar cell panel 2 having a large area. As a procedure of the heating vacuum laminating method, the photovoltaic element group 9, the films 11 and 12, the sealing material 10, and the reinforcing member 13 constituting the solar cell panel 2 are laminated in a vacuum laminating apparatus, and vacuuming is performed. The air existing between the materials is degassed. Next, it heats up in this vacuumed state, heats up, reaches the temperature for the sealing material 10 to bridge | crosslink or harden | cure, This temperature is hold | maintained for a predetermined time until the sealing material 10 fully hardens | cures. Thereafter, the system is cooled to stop evacuation, and the atmospheric pressure is returned to form a laminate. This method is convenient for increasing the area of the solar cell panel 2 because the solar cell panel 2 is made using a sheet-like material. In consideration of easiness of lamination, the reinforcing member 13 is preferably a flat plate as described above.

  Examples of the present invention will be described in detail below, but the present invention is not limited to these examples.

[Example 1]
The solar cell module of Example 1 is coated with a coating material made of ETFE, EVA, and PET, and laminated with a molten Zn55% -Al-based alloy-plated steel plate (galvalume steel plate) as a reinforcing member. From a solar cell panel using photovoltaic elements, an H-shaped slide member made of aluminum, an adhesive for joining the solar cell panel and the slide member, and a guide member fixed to the installation surface of a structure such as a roof or a wall surface It is configured.

  7 is a perspective view of the solar cell module of Example 1 as viewed from the light receiving surface side, FIG. 8 is a perspective view of the solar cell module of this example as viewed from the non-light receiving surface side, and FIG. It is a side view which shows the solar cell module of a present Example. In these drawings, 21 is a solar cell module, 22 is a solar cell panel, 23 is a slide member, 24 is an amorphous microcrystal laminated photovoltaic element group, 25 is a reinforcing member, 26 is a junction box, and 27 is a bypass diode. Elements 28 are EVA, 29 is ETFE, 30 is PET, and 31 is a silicon adhesive.

  As shown in the drawing, a plurality of rows of slide members 23 are bonded and fixed to the back surface of the solar cell panel 22 in this embodiment so as to run in parallel along the longitudinal direction, and a junction is formed between the slide members. A box 26 is provided.

  The solar cell panel 22 is manufactured by a heating vacuum laminating method using a vacuum laminating apparatus, and then a silicon adhesive is applied to a molten Zn 55% -Al alloy-plated steel plate as the reinforcing member 25 located on the back surface of the solar cell panel 22. The H-shaped slide member 23 was bonded and fixed using 31. By adopting such an integral laminated structure, the solar cell module 21 can be produced without significantly reducing the strength of the solar cell panel itself even if the thickness of the molten Zn 55% -Al alloy-plated steel plate 25 is reduced. Is possible.

  Further, the four slide members 23 are arranged so as to run in parallel along the long side direction of the solar cell panel 22 with a predetermined interval in the width direction, so that the strength of the solar cell module 21 can be maintained. it can. Furthermore, the stress and distortion of the solar cell panel 22 applied to the arrangement area of the diode element 27 can be reduced by arranging the slide member 23 immediately below the area of the solar cell panel 22 where the bypass diode element 27 is arranged. Therefore, the diode element 27 can be prevented from being damaged or broken.

  In addition, as described above, the junction box 26 for taking out the electrical output is provided between the slide members provided on the back surface of the solar cell panel 22.

  FIG. 10 is a plan view showing a state of the structure of the amorphous microcrystal silicon type photovoltaic element group used in the solar cell panel in this embodiment as seen from the light receiving surface side, and FIG. 11 shows the solar cell panel in this embodiment. It is the schematic diagram which expanded the electrical connection part of the amorphous microcrystal laminated | stacked photovoltaic device to comprise. In these figures, 24 is a photovoltaic element group, 27 is a Schottky barrier diode, 32 is an amorphous microcrystal stacked photovoltaic element, 33 is a diode terminal, 35 is a positive terminal of the photovoltaic element, and 36 is light. The negative electrode terminal of the photovoltaic element, 37 is an interconnector, and 38 is an electrical connection part of the photovoltaic element.

  In this embodiment, 16 amorphous microcrystal stacked photovoltaic elements 32 are connected in series, and a Schottky barrier diode 27 is provided for every two amorphous microcrystal stacked photovoltaic elements 32 connected in series. It has been.

  FIG. 12 is an explanatory diagram showing a situation in which the solar cell module of the present embodiment is fixed to the installation surface of the structure. In FIG. 12, 21 is a solar cell module, 22 is a solar cell panel, 23 is a slide member, 39 is an installation surface of a structure, 40 is a guide member, 41 is a cap member, and 42 is a slide direction of the solar cell module.

  As shown in the drawing, a slide-shaped member 23 having an H-shaped cross section provided on the back surface of the solar cell panel 22 is provided on a channel-shaped guide member 40 that is fixed to the installation surface 39 of a structure such as a roof or a wall and closed at one end. The solar cell module 21 was fixed to the installation surface 39 of the structure by covering the cap member 41 on the open end. In this embodiment, the number of cap members 41 may be four per module.

  According to the configuration of the present embodiment, the solar cell module 21 can be manufactured with the same mechanical strength as that of the prior art, and at the same time, the installation work of the solar cell module 21 is much easier than the conventional fastening and fastening with the fastening member. Further, when it is necessary to remove the solar cell module 21, the solar cell module 21 can be removed very easily by simply removing the cap member 41 from the guide member 40 and sliding the slide member 23.

  Therefore, according to the present embodiment, it is possible to provide a solar cell module that has a mechanical strength comparable to that of a conventional solar cell module, can be reduced in cost, and is extremely easy to perform construction work. it can.

[Example 2]
The solar cell module of Example 2 is coated with a coating material made of ETFE, EVA and PET, and laminated with a molten Zn55% -Al alloy-plated steel plate (galvalume steel plate) as a reinforcing member. It is composed of a solar cell panel using photovoltaic elements, a slide member made of aluminum, an adhesive for joining the solar cell panel and the slide member, and a guide member fixed to the installation surface of a structure such as a roof or a wall surface. ing.

  The configuration of the photovoltaic element and photovoltaic element group used in this example, the material of the solar cell panel, the shape of the slide member, and the construction status are the same as in Example 1.

  13 is a perspective view showing the solar cell module of Example 2 as seen from the light receiving surface side, FIG. 14 is a side view showing the solar cell module of this example, and FIG. It is a perspective view which shows the state seen from the light-receiving surface side. In these drawings, 51 is a solar cell module, 52 is a solar cell panel, 53 is a slide member, 54 is an amorphous microcrystal laminated photovoltaic element group, 56 is a gap portion, 57 is a bypass diode element, and 58 is EVA. , 59 is ETFE, 60 is PET, 61 is a reinforcing member, 62 is a silicone adhesive, and 63 is a junction box.

  As shown in the drawing, three slide members 53 in the present embodiment are arranged in parallel along the long side direction of the solar cell panel 52, and the mechanical strength of the solar cell panel 22 can be maintained. Further, since the slide member 53 is disposed immediately below the gap portion 56 between the photovoltaic elements in the amorphous microcrystal stacked photovoltaic element group 54 constituting the solar cell panel 22, the solar cell of the gap portion 56 is provided. The stress and strain on the panel 52 can be reduced. Since the strength of the gap portion 56 is normally maintained at the thickness of the molten Zn 55% -Al alloy-plated steel plate as the reinforcing member 61, the thickness of the reinforcing member 61 is implemented by configuring as in this embodiment. It is possible to make it thinner than Example 1.

  Note that a junction box 63 is provided separately for the positive electrode and the negative electrode between the slide members on the back surface of the solar cell panel 22.

Example 3
The solar cell module of Example 3 was coated with a coating material made of ETFE, EVA and PET, and laminated with a molten Zn55% -Al alloy-plated steel plate (galvalume steel plate) as a reinforcing member, and laminated with an amorphous microcrystal. Solar cell panel using photovoltaic element, channel-shaped long slide member made of aluminum, adhesive for joining solar cell panel and slide member, and fixing surface of structure such as roof and wall surface It consists of a guide member.

  16 is a perspective view showing the solar cell module of Example 3 as viewed from the light receiving surface side, FIG. 17 is a perspective view of the solar cell module of this example as viewed from the non-light receiving surface side, and FIG. It is a side view which shows the solar cell module of a present Example. In these figures, 71 is a solar cell module, 72 is a solar cell panel, 73 is a slide member, 74 is an amorphous microcrystal laminated photovoltaic element group, 75 is a reinforcing member, 76 is a junction box, and 77 is a bypass diode. Element 78 is EVA, 79 is ETFE, 80 is PET, 81 is a silicon adhesive.

  As shown in the drawing, three long slide members 73 are bonded and fixed in parallel to a molten Zn 55% -Al alloy-plated steel plate as the reinforcing member 75 located on the back surface of the solar cell panel 72 in this embodiment. A junction box 76 is provided between the slide members. In this embodiment, the slide member 73 has a channel shape with a C-shaped cross section.

  FIG. 19 is an explanatory diagram illustrating a situation in which the solar cell module of the present embodiment is fixed to the installation surface of the structure, and FIG. 20 is an explanatory diagram illustrating a state in which the solar cell module of the present embodiment is fixed to the installation surface of the structure. is there. In these figures, 71 is a solar cell module, 72 is a solar cell panel, 73 is a slide member, 75 is a reinforcing member, 82 is an installation surface of a structure, 83 is a guide member, 84 is a slide direction of the solar cell module, 85 Is a bolt.

  As shown in the figure, on the installation surface 82 of a structure such as a roof or a wall surface, a guide member 83 having an H-shaped cross section is separated in the length direction and the width direction by a predetermined interval, and three pieces in the length direction, the width direction. Are arranged in three pieces. A channel-like slide member 73 provided on the back surface of the solar cell panel 72 is slid and fitted to these guide members 83, and bolts 85 are penetrated in the width direction of the six slide members 73 at both ends of the solar cell module 71. The solar cell module was fixed so as not to move in the sliding direction 84 by being screwed.

  In the present embodiment, the guide member 83 is not a long piece but a plurality of short piece members, and is arranged at predetermined intervals in the length direction and the width direction as described above. The guide member 83 is preferably a long member. However, when the installation surface 82 to which the guide member 83 is attached is composed of a member having sufficient mechanical strength, it is not always long as in this embodiment. There is no need to be a short piece member.

  According to the present embodiment, the same operational effects as those of the first and second embodiments can be obtained, but in particular, the material cost of the guide member 83 can be reduced.

It is a perspective view which shows the state which looked at one Embodiment of the solar cell module which concerns on this invention from the light-receiving surface side. It is a side view which shows the solar cell module of this embodiment. It is a perspective view which shows the installation condition of the solar cell module of this embodiment. It is a side view which shows the state which fixed the solar cell module of this embodiment to the installation surface of the structure. It is a schematic diagram which shows the cross-section of the solar cell panel in the solar cell module of this embodiment. It is a schematic diagram which shows the cross-sectional shape of the slide member in the solar cell module of this embodiment. It is a perspective view which shows the state which looked at the solar cell module of Example 1 from the light-receiving surface side. It is a perspective view which shows the state which looked at the solar cell module of Example 1 from the non-light-receiving surface side. 1 is a side view showing a solar cell module of Example 1. FIG. It is a top view which shows the state which looked at the structure of the amorphous micro crystal silicon type photovoltaic element group used for the solar cell panel in Example 1 from the light-receiving surface side. It is the schematic diagram which expanded the electrical connection part of the amorphous microcrystal lamination type photovoltaic element which comprises the solar cell panel in a present Example. It is explanatory drawing which shows the condition which fixes the solar cell module of Example 1 to the installation surface of a structure. It is a perspective view which shows the state which looked at the solar cell module of Example 2 from the light-receiving surface side. 6 is a side view showing a solar cell module of Example 2. FIG. It is a perspective view which shows the state which looked at the solar cell module of Example 2 from the non-light-receiving surface side. It is a perspective view which shows the state which looked at the solar cell module of Example 3 from the light-receiving surface side. It is a perspective view which shows the state which looked at the solar cell module of Example 3 from the non-light-receiving surface side. 6 is a side view showing a solar cell module of Example 3. FIG. It is explanatory drawing which shows the condition which fixes the solar cell module of Example 3 to the installation surface of a structure. It is explanatory drawing which shows the state which fixed the solar cell module of Example 3 to the installation surface of a structure. It is an example of the conventional solar cell module with a flame | frame, (a) is a top view which shows the state seen from the light-receiving surface side, (b) is a rear view which shows the state seen from the non-light-receiving surface side. It is a schematic diagram which shows the fixation structure to the mount frame of the conventional solar cell module with an aluminum frame.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Solar cell module 2 Solar cell panel 3 Slide member 4 Photovoltaic element 5 Adhesive 6 Structure installation surface 7 Guide member 8 Slide direction of solar cell module 9 Photovoltaic element group 10 Sealing material 11 Translucent surface Member 12 Insulating film 13 Reinforcing member 21 Solar cell module 22 Solar cell panel 23 Slide member 24 Amorphous microcrystal laminated photovoltaic element group 25 Reinforcing member 26 Junction box 27 Bypass diode element 28 EVA
29 ETFE
30 PET
31 Silicon Adhesive 32 Amorphous Micro Crystal Laminated Photovoltaic Element 33 Diode Terminal 35 Photovoltaic Element Positive Terminal 36 Photovoltaic Element Negative Terminal 37 Interconnector 38 Photovoltaic Element Electrical Connection 39 Structure Installation Surface 40 Guide member 41 Cap member 42 Slide direction 51 of solar cell module 51 Solar cell module 52 Solar cell panel 53 Slide member 54 Amorphous microcrystal laminated photovoltaic element group 56 Gap portion 57 Bypass diode element 58 EVA
59 ETFE
60 PET
61 Reinforcing member 62 Silicone adhesive 63 Junction box 71 Solar cell module 72 Solar cell panel 73 Slide member 74 Amorphous microcrystal laminated photovoltaic element group 75 Reinforcing member 76 Junction box 77 Bypass diode element 78 EVA
79 ETFE
80 PET
81 Silicon Adhesive 82 Structure Installation Surface 83 Guide Member 84 Solar Cell Module Slide Direction 85 Volts

Claims (11)

A solar cell module comprising a solar cell panel in which a photovoltaic element group for performing photoelectric conversion is sealed with a covering material and supported in a frame body,
The non-light-receiving surface to be the back surface of the solar cell panel is provided with a fitting attachment member for fixing to the installation surface of the structure,
The fitting attachment member includes a slide member fixed to the non-light-receiving surface of the solar cell panel, and a guide member fixed to the installation surface of the structure to guide the slide member and fit to the slide member. A solar cell module characterized by comprising:   The solar cell module according to claim 1, wherein one of the slide member and the guide member is a male fitting member and the other is a female fitting member.   The solar cell module according to claim 1 or 2, wherein when the slide member and the guide member are fitted, the slide member has only one degree of freedom in the XYZ axes.   4. The solar cell module according to claim 1, wherein a plurality of slide members are provided in a plurality of rows on the non-light-receiving surface of the solar cell panel so as to run in parallel.   The solar cell module according to claim 4, wherein the slide member is disposed in parallel along a longitudinal direction of a non-light-receiving surface of the solar cell panel.   The solar cell module according to claim 1, wherein the slide member is bonded and fixed to a non-light-receiving surface of the solar cell panel.   The solar cell module according to any one of claims 1 to 6, wherein the slide member is arranged immediately below a gap portion between photovoltaic elements constituting the solar cell panel.   The sun according to any one of claims 1 to 6, wherein the slide member is arranged directly under a bypass diode body connected between adjacent photovoltaic elements constituting the solar cell panel. Battery module.   The solar cell panel has a translucent surface member on the surface of the photovoltaic element group and an insulating film on the back surface, and a sealant seals between the translucent surface member and the insulating film. The reinforcing member is laminated on the back surface of the insulating film and integrally formed by a heating vacuum laminating method, and the slide member is fixed to the reinforcing member. The solar cell module according to.   The solar cell module according to claim 9, wherein the reinforcing member is a flat plate. The solar cell module according to claim 10, wherein the reinforcing member is a metal plate.

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