JP2016182001A - Solar cell module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a solar cell module capable of stably maintaining a power generation function even under such a condition that an external force is applied to a solar cell module body from the outside.SOLUTION: A solar cell module 10 includes: a solar cell module body 11; a frame body 17 disposed at a peripheral edge of the solar cell module body. In a non-light receiving surface 10B of the solar cell module body, a long-sized support member α is fixed on the non-light receiving surface by a fixing member β and is disposed, being spaced from the frame body.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a solar cell module including a solar cell module main body and a frame body arranged on the periphery thereof. More specifically, the present invention relates to a solar cell module that can flexibly cope with a solar cell module body that receives external pressure from the light incident surface side toward the non-incident surface side.

  In recent years, efforts have been actively made to use sunlight, which is natural energy, as electric power. As one of the typical usages, a solar cell module is placed on a desired object placed outside a building, and the solar cells contained in the solar cell module receive sunlight to perform photoelectric conversion. Solar power generation, such as using the power obtained by doing this as private power consumption or selling surplus power.

  Such a solar cell module includes a solar cell module main body and a frame body arranged on the periphery of the solar cell module main body, and the frame body is used by being fixed to the object by a predetermined mount. Known (for example, Patent Document 1). Since such a solar cell module is installed outdoors, it is used in an environment exposed to wind and rain, dust, snowfall, and the like. Therefore, the solar cell module may fall into a state in which an external force is applied from the sunlight incident side to the non-incident side. The solar cell module main body has a configuration in which solar cells are electrically connected. When the external force is excessively applied, there is a problem that the electrical connection is easily damaged.

  For this reason, in areas where storms and heavy snow are often encountered, it has been extremely difficult to install solar cell modules outdoors and operate them constantly. Therefore, it has been expected to develop a solar cell module capable of maintaining a stable power generation function even under conditions where external force is applied to the solar cell module body such as storms or heavy snow.

JP 2013-120772 A

  The present invention has been made in view of the above circumstances, and provides a solar cell module capable of maintaining a stable power generation function even under conditions where external force is applied to the solar cell module body. The purpose is to do.

The solar cell module according to claim 1 of the present invention is a solar cell module including a solar cell module main body and a frame body arranged on a peripheral edge of the solar cell module main body. On the light receiving surface, a long support member is fixed to the non-light receiving surface by a fixing member, and is arranged apart from the frame.
The solar cell module according to claim 2 of the present invention is the solar cell module according to claim 1, wherein the longitudinal direction of the support member is the short side direction or the longitudinal direction of the solar cell module body on the non-light-receiving surface of the solar cell module body. It is characterized by being either one or both directions.
The solar cell module according to claim 3 of the present invention is the solar cell module according to claim 1 or 2, wherein when the solar cell module body receives an external pressure from the light receiving surface side toward the non-light receiving surface side, the solar cell module body is arranged on the non-light receiving surface. A part or all of the support member formed is configured to abut on a gantry that fixes the frame to an object.

  The solar cell module of the present invention is in a state where the solar cell module main body is fixed by a frame body arranged on the periphery thereof. In this state, when an external force (for example, gravity due to snow) is applied to the solar cell module body from the light-receiving surface side to the non-light-receiving surface side, the solar cell module body is affected by the external force and the central region of the solar cell module body Is forced to deform so as to form a convex portion on the non-light-receiving surface side.

  Under the situation where such deformation is forced, in the solar cell module of the present invention, the long support member is fixed to the non-light-receiving surface of the solar cell module body by the fixing member. Therefore, the support member plays a role of a splint for the non-light-receiving surface of the solar cell module main body, so that the degree of deformation forming a convex portion in the central region of the solar cell module main body is reduced.

  Moreover, in the solar cell module of this invention, since the supporting member is spaced apart from the said frame, it can escape from the frame, without fixing a supporting member to a frame. Therefore, the support member having the above-described configuration can play a role of a splint more flexibly along the deformation of the non-light-receiving surface of the solar cell module body without being affected by the frame.

Therefore, even under conditions where external force is applied to the solar cell module body, problems such as the solar cell itself contained in the solar cell module body or electrical connection between the solar cells are eliminated. Is done.
Therefore, the present invention contributes to the provision of a solar cell module capable of maintaining a stable power generation function even under conditions where external force is applied to the solar cell module body.

It is a figure which shows one Embodiment of the solar cell module which concerns on this invention, (a) is sectional drawing, (b) is a bottom view (arrangement example of a supporting member). The bottom view which shows the other example of arrangement | positioning of a supporting member. Various sectional views in the short direction of the support member. Sectional drawing which shows the state by which the solar cell module was fixed to the target object with the mount frame. Sectional drawing which shows the state in which external force was added with respect to the solar cell module of FIG. The figure which shows one Embodiment of the target object in which a solar cell module is mounted.

Hereinafter, an embodiment of a solar cell module according to the present invention will be described with reference to the drawings.
1A and 1B are diagrams showing an embodiment of the solar cell module of the present invention, in which FIG. 1A is a cross-sectional view, and FIG. 1B is a bottom view (example of arrangement of support members). The solar cell module 10 includes a solar cell module main body 11 and a frame body (also referred to as a frame) 17 disposed on the periphery of the solar cell module main body, and the periphery of the solar cell module main body is framed via a sealing material 16. It is fixed by the body 17.

  The solar cell module body 11 is a structure in which a plurality of solar cells 11a are connected in series with each other by terminal tabs 11b of the solar cells 11a. The solar cell module body 11 is sealed with a resin body 12, and a glass 13 is disposed on the light receiving surface 10A side, and a back sheet 14 is disposed on the non-light receiving surface 10B side. Both ends of the series connection in the solar cell module main body 11 are electrically connected to the output terminals 15 a and 15 b of the terminal box 15 placed on the back sheet 14.

  As shown in FIG. 1A, in the solar cell module 10, the non-light-receiving surface 10B of the solar cell module main body 11 has a support member α made of a long rigid body fixed to the non-light-receiving surface 10B. It is fixed by the member β. Further, as shown in FIG. 1B, the support member α and the fixing member β are disposed on the non-light-receiving surface 10 </ b> B of the solar cell module body 11 so as to be separated from the frame body 17.

  When the solar cell module main body 11 is subjected to an external force from the light receiving surface 10A side toward the non-light receiving surface 10B side, the fixing member β absorbs deformation of the solar cell module main body 11 due to its flexibility. The support member α that is relaxed and placed on the fixing member β can function as a splint and simultaneously exhibit two actions and effects of suppressing deformation of the solar cell module body 11. When the laminated body of the support member α and the fixing member β has a long shape, the action / effect is improved.

  For example, if one laminated body of the support member α and the fixing member β is provided on the non-light-receiving surface 10B, the non-light-receiving surface 10B of the solar cell module body 11 is rectangular as shown in FIG. If it is assumed that it has a shape, it can have versatility by being positioned along the diagonal. That is, it becomes possible to correspond to the thickness of the solar cell module body 11 regardless of whether the direction of deformation is the longitudinal direction or the short direction.

  Further, since both the support member α and the fixing member β are separated from the frame body 17, the stacked body of the support member α and the fixing member β is not directly bound by the frame body 17. That is, the laminated body of the support member α and the fixing member β can be flexibly deformed according to the influence of the external force that the non-light receiving surface 10B of the solar cell module body 11 receives from the light receiving surface 10A side.

For example, the arrangement shown in FIGS. 2 and 3 is suitable in order to stably exhibit the action and effect that the above-described laminated body of the support member α and the fixing member β has a long shape.
FIG. 2A shows a case where the longitudinal direction of the laminated body of the support member α and the fixing member β is arranged in parallel along the longitudinal direction of the solar cell module body 11. This is an arrangement example in which three laminates α (x1), α (x2), and α (x3) having different thicknesses and lengths are provided. The number of laminates is not limited to three, but one Alternatively, there may be a plurality. There are no particular restrictions on the individual thicknesses and lengths of the laminates and the relative positions of the laminates on the non-light-receiving surface 10B.

  FIG. 2B shows a case where the longitudinal direction of the laminate of the support member α and the fixing member β is arranged in parallel along the short direction of the solar cell module body 11. This is an arrangement example in which four laminates α (y1), α (y2), α (y3) having different thicknesses and lengths are provided, and the number of laminates is not limited to four, but one Alternatively, there may be a plurality. There are no particular restrictions on the individual thicknesses and lengths of the laminates and the relative positions of the laminates on the non-light-receiving surface 10B.

As the support member α, a member having rigidity is preferably used, and examples thereof include a metal material that is lightweight and excellent in corrosion resistance, such as aluminum and its alloys, magnesium and its alloys. In addition, a weather-resistant resin or a carbon material is desirable.
As the fixing member β, it is important to select a material having excellent adhesion to the support member α and the back sheet 14. For example, silicone, double-sided tape, acrylic resin, EVA (hot melt), synthetic resin type And inorganic and organic adhesives.

FIG. 3 is various cross-sectional views of the support member α in the short direction. The support member α is stably fixed to the non-light-receiving surface 10B of the solar cell module body 11 via the fixing member β by including a first portion that forms one surface in contact with the fixing member β in the cross section in the short direction. The
Further, the solar cell module body 11 receives an external force, warps from the light receiving surface 10A toward the non-light receiving surface 10B, and reduces the degree to which the non-light receiving surface 10B has a convex shape. It is good to provide the 2nd site | part extended to.

FIG. 3A shows a case where the cross section is T-shaped (α1), where the first portion α11 forms one surface in contact with the fixing member β and the end portion α12 of the second portion is warped, and the non-light-receiving surface 10B. The farthest from.
FIG. 3B shows a case where the cross section is I-shaped (the shape of Roman numeral 1) (α2), the first portion α21 forms one surface in contact with the fixing member β, and the other surface α22 of the second portion is When warped, it is farthest from the non-light receiving surface 10B.
FIG. 3C shows a case where the cross section has a Roman numeral 2 and is in the shape of 2 (α3). As in FIG. 3B, the first portion α31 forms one surface in contact with the fixing member β. When the other surface α32 of the part warps, it is farthest from the non-light receiving surface 10B.

FIG. 3D shows a case where the shape is □ (α4), where the first portion α41 forms one surface in contact with the fixing member β, and is farthest from the non-light-receiving surface 10B when the other surface α42 of the second portion warps. .
FIG. 3E shows a case where the shape is ▽ (α5). The first portion α51 forms one surface in contact with the fixing member β, and is farthest from the non-light-receiving surface 10B when the top portion α52 of the second portion warps.

  In addition, although not shown, there are a case where the shape is a semicircle, and a case where a semicircular arc portion forms a waveform. The support member α includes the above-described support member α and the fixing member while reducing the weight by using a thin tubular member with the inside as a space, including the cases of FIGS. 3 (d) and 3 (e). Since the effect | action and effect which provide the laminated body of (beta) are also acquired, it is more preferable.

  The solar cell module according to the present invention is placed on an object as shown in FIG. 6, for example. Below, although the structural example whose target object is a roof of a house is demonstrated, a target object is not limited to the roof of a house.

FIG. 6 is a diagram illustrating an embodiment of an object on which a solar cell module is placed.
As the object on which the solar cell module is placed, there are a plurality of rafters 112, 112,..., And a ground plate 113 supported by the rafters 112, which constitute the roof 111 of the house 110 and are arranged at predetermined intervals. Can be mentioned.

  Examples of the house 110 include a gable-type house with a wooden structure and a dormitory-type house. These houses 110 are composed of a plurality of side walls 121 rising from the ground surface (the ground), a roof 111 covering a space defined by the side walls 121, and the like.

  The roof 111 includes a plurality of rafters 112, 112... Which are to be a framework, and a field plate 113 supported by the rafters 112, 112. In addition, a member (board material) 139 for covering a roof such as a steel plate or a tile is installed on the base plate 113.

  As shown in FIG. 4A, in the solar cell module 10, the module fixing bracket 20 is the roof bracket in a state in which the outer surface and the outer upper surface of the frame body 17 are held in contact by the module fixing bracket 20. It is fixed with screws 22 to the rafter 112 of the roof 111 with the (mounting base) 21, the brazing material 139, and the field board 113.

  Thereby, the surface (lower surface in FIG. 4) of the supporting member α provided on the non-light-receiving surface 10B of the solar cell module body 11 constituting the solar cell module 10 via the fixing member β is a roof metal fitting (mounting base). It is a position facing 21.

  In FIG. 4A, the symbol d represents the separation distance between the surface of the support member α and the roof fitting (mounting base) 21. FIG. 4B is a bottom view of the solar cell module main body 11, that is, a plan view of the solar cell module main body 11 as viewed from the roof metal fitting (mounting base) 21 side. 4A, an arrow F represents an external force applied from the light receiving surface 10A toward the non-light receiving surface 10B due to, for example, wind and snow, and FIG. 4 shows a state where the external force F does not exist.

  FIG. 5 shows a state in which an external force F is applied from the light receiving surface 10A side of the solar cell module body 11 toward the non-light receiving surface 10B. In this case, under the influence of the external force F, the non-light-receiving surface 10B of the solar cell module body 11 warps in the direction of the arrow d. As a result, when the maximum warpage amount dmax is reached, the surface (the lower surface in FIG. 4) of the support member α provided on the non-light-receiving surface 10B of the solar cell module body 11 via the fixing member β is the roof metal fitting. (Stand) 21 and a part or the whole are in contact.

  That is, according to the configuration of the present invention, the roof metal fitting (mounting base) 21 functions as a stopper and regulates the amount of warping that the surface of the support member α moves in the direction of the arrow d. The light receiving surface 10B does not fall into a situation where warping occurs without limit. That is, according to the present invention, the maximum value dmax of the amount of warpage that occurs when an external force F is applied can be defined in advance by the distance between the opposing surfaces of the support member α and the roof bracket (mounting base). Bring battery module.

  The maximum value dmax of the warpage amount described above is “opposed to the support member α provided via the fixing member β” for each site where the solar cell module is installed, and further for each solar cell module. By appropriately selecting a combination with the “metal fittings for the roof”, it can be set in detail at the installation site. Therefore, according to the present invention, it is possible to provide a solar cell module that can flexibly cope with various conditions at the installation site.

  Therefore, according to the present invention, it is possible to maintain a stable power generation function even under conditions in which an external force is applied to the solar cell module body, for example, in an environment in which an external force is applied due to wind, rain, or snow. A possible solar cell module is obtained.

  In the present invention, the fixing member β is provided between the non-light-receiving surface 10B of the solar cell module body 11 and the contact surface of the first portion (for example, α11 shown in the drawing) of the support member α. At that time, for example, silicone and an acrylic resin adhesive are used in combination, and first, an adhesive is applied to the central area of the contact surface, and the support member α is temporarily fixed to the non-light-receiving surface 10B of the solar cell module body 11 ( After temporarily fixing), a method of filling the peripheral area of the contact surface with silicone to obtain a final fixed state is preferable.

  According to this method, the worker can provide the support member α via the fixing member β at the site where the solar cell module is installed. Therefore, the operator applies the external force F while finely adjusting the relative distance from the object (in the above-described specific example, the roof bracket (mounting base)) that is in contact with the support member α, which varies from site to site. Installation work that optimizes the positional relationship between the two is possible.

  Therefore, the present invention can flexibly cope with an installation site where the solar cell module is installed outdoors and is always operated in an area often hit by storms or heavy snow. It also contributes to the provision of solar cell modules with excellent installation flexibility.

  The present invention is widely applicable to solar cell modules. Such a solar cell module constitutes an application site installed in an environment exposed to external forces such as wind and rain or snow, for example, a case installed on the roof of a house or the roof of a building, a large-scale power generation system, and the like. And a case installed on the sea.

  α support member, β fixing member, 10 solar cell module, 10A light receiving surface, 10B non-light receiving surface, 11 solar cell module main body, 16 sealing material, 17 frame.

Claims (3)

A solar cell module comprising a solar cell module main body and a frame disposed on the periphery of the solar cell module main body,
In the non-light-receiving surface of the said solar cell module main body, the elongate support member is fixed to this non-light-receiving surface by the adhering member, and is spaced apart from the said frame, The solar cell module characterized by the above-mentioned. The longitudinal direction of the support member is one of the short direction and the long direction of the solar cell module main body, or both on the non-light-receiving surface of the solar cell module main body. The solar cell module described. When the solar cell module body receives an external pressure from the light receiving surface side toward the non-light receiving surface side, a part or all of the support member disposed on the non-light receiving surface fixes the frame body to the object. The solar cell module according to claim 1, wherein the solar cell module is configured to abut on a gantry.

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