JP2012023293A - Solar cell module, solar cell module assembly, and manufacturing method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a solar cell module to be removed from a support.SOLUTION: According to an embodiment of this invention, a solar cell module assembly 100 includes a solar cell module 1, a first engaging element 31 of a hook-and-loop fastener 3, which is fastened to a back surface 12 that is an opposite side of a light receiving surface 14 of the solar cell module 1, a support 2, and a second engaging element 32 of the hook-and-loop fastener 3, which is fastened to a support surface 22 of the support 2. The solar cell module 1 has flexibility, and the first engaging element 31 and the second engaging element 32 are engaged with each other so as to be removable.

Description

  The present invention relates to a solar cell module assembly, a solar cell module, and a method for manufacturing a solar cell module assembly. More specifically, the present invention relates to a solar cell module assembly including a solar cell module that can be attached to and detached from a support, a solar cell module, and a method for manufacturing the solar cell module assembly.

  A solar cell is a general-purpose power source that uses only light energy such as sunlight as an external energy source and does not require any other fuel supply. For this reason, solar cells are used as a power source for a wide range of applications. Applications include emergency power supply when power supply stops due to a disaster, power supply for self-sufficiency of nomads, and power supply during movement in mountains, isolated islands, deserts and other non-powered areas . Moreover, even if it is a solar cell module fixed and operated as a power supply for self-sufficiency, there are few obstacles at the time of relocation which changes an installation place for the portability of a solar cell.

  In order to obtain electric power from the energy of sunlight by an actual solar cell, it is necessary to attach the solar cell to some support in order to appropriately receive sunlight by the light receiving surface. Typical examples of the support are structures such as buildings and vehicles, and portable items such as mobile phones and bags. One of the specific methods for attaching the solar cell panel or the solar cell module to the support is a method using adhesion. For example, in Patent Document 1 (Japanese Patent Application Laid-Open No. 9-119202), one or a plurality of solar cell panels and at least a heat insulating material and a flat plate material provided on the back side thereof are integrated through an adhesive layer. Has been disclosed. In addition, a method using a hook-and-loop fastener has been proposed as another method for attaching to a support. For example, in Patent Document 2 (Japanese Patent Application Laid-Open No. 2003-229946), a power generation device including a solar cell on the outer surface side of a substrate that can be attached along the back surface side of a mobile phone and one side edge portion of the substrate are provided. And a pair of output terminals connected to the solar cell, and the substrate has attachment means that can be detachably attached to the back side of the mobile phone, and the output terminal is attached to the back side of the mobile phone by the attachment means. There is disclosed a mobile phone charging device characterized in that it is provided in a state in which it can be contacted with a contact-type charging terminal among charging terminals for a battery built in the mobile phone in a state of being attached to the side. Patent Document 2 discloses a technique in which the attaching means is constituted by a male body and a female body of a hook-and-loop fastener. Patent Document 3 includes at least one paver placed on a roof structure, at least one paver fastener attached to the paver, a top surface for receiving light, and a bottom surface on which at least one device fastener is attached. An energy generation system comprising a photovoltaic device is disclosed.

JP-A-9-119202 (summary) JP 2003-229946 A (Claim 3) International Publication No. 2008/063660 Pamphlet (Special Table 2010-1051019, Claim 1)

  By the way, in the above-described conventional method, the detachment operation of temporarily removing the solar cell module from the support such as the heat insulating material or the plate material or the mobile phone main body and then attaching it to the same or another support as necessary is actually performed. Attempting to do so is very difficult. In addition, the solar cell module capable of such an attaching / detaching operation is greatly restricted.

  First, in the technique by adhesion of Patent Document 1, it is difficult to separate and remove the solar cell panel from an assembly obtained by integrating the solar cell panel with a support such as a heat insulating material or a plate material. This is because in order to remove the solar cell panel bonded to the support from the support, it is necessary to apply a very strong force between the solar cell panel and the support so as to break the adhesive layer. If it cannot be removed from the support, even if the solar cell panel or panels are portable, the advantages cannot be utilized.

  Moreover, in the method using the surface fastener of Patent Document 2, if the area of a power generation device including a solar cell or a support is as large as a mobile phone, the attached solar cell module is peeled off from the support such as a mobile phone. Is not impossible. However, when a hook-and-loop fastener is used, it is actually difficult to remove the power generation device by peeling off the hook-and-loop fastener as the area of the solar cell increases. Since the power generation amount is limited when the area of the power generation device including the solar cell is small, the use as a power source is greatly limited.

  And the photovoltaic device (solar cell panel) disclosed by patent document 3 is a structure which contains multiple semiconductor wafers as a photovoltaic cell, for example. Here, Patent Document 3 discloses that a solar cell panel is mechanically coupled to a paver (roofing material) (for example, paragraph 0032 in an international pamphlet of Patent Document 3; Paragraph 0021). Here, the mechanical coupling is realized by a device fastener and a paver fastener, and the coupling is made removable. However, when the size of the solar cell panel including the semiconductor wafer is increased, the removal of the solar cell panel from the mechanically coupled paper (roof material) is actually as described above with respect to Patent Document 2. Have difficulty. Further, if the size of the solar cell panel is small, it is necessary to increase the number of solar cell panels necessary for securing a predetermined area. When the number of solar cell panels increases, the work load at the time of installation and removal of the solar cell panels increases, and the number of electrical connection portions also increases. Therefore, in the configuration disclosed in Patent Document 3, when the solar cell panel is of a size that can be removed, the work load at the time of installing or removing the solar cell panel increases, and the solar cell panel is in operation. Reliability decreases.

  The present invention has been made to solve such problems, and in a solar cell module assembly in which a solar cell module is attached to a support, the support and the solar cell module should be detachable. Therefore, it contributes to the expansion of the use of the solar cell module having portability.

  The inventors of the present application particularly paid attention to a solar cell module assembly in which a support and a solar cell module are integrated using a hook-and-loop fastener. Specifically, a method for expanding a removable solar cell module to a larger area by using a hook-and-loop fastener was examined. As described above, when the hook-and-loop fastener is used, it becomes difficult to peel off the hook-and-loop fastener as the area of the hook-and-loop fastener between the support and the solar cell module increases. Certainly, when the support and the solar cell module are about the size of, for example, a mobile phone case, the hook-and-loop fastener between the solar cell module and the support can be peeled off. However, when the area of the region where the pair of elements constituting the surface fastener are engaged with each other becomes larger than a certain size, it is difficult to peel the surface fastener itself. In particular, when the entire surface of the solar cell module is attached to the support by a hook-and-loop fastener, the area of the solar cell itself is limited by the area in which the hook-and-loop fastener is engaged.

  Therefore, in one aspect of the present invention, a flexible solar cell module and a hook-and-loop fastener that is fixed to the back surface opposite to the light receiving surface of the solar cell module and covers at least a part of the back surface A first engagement element, a rigid support, and a second surface fastener fastened to a support surface of the support and covering at least a portion of the support surface. There is provided a solar cell module assembly including an engagement element, wherein the first engagement element and the second engagement element are engaged with each other in a removable manner. .

  In one embodiment of the present invention, the light receiving surface, the back surface opposite to the light receiving surface, and the first engaging element of the surface fastener fixed to the back surface and covering at least a part of the back surface The first engagement element is removable in a removable manner with respect to the second engagement element of the hook-and-loop fastener that is fixed to the support surface of the support and covers at least a part of the support surface. A flexible solar cell module is provided which is adapted to be engaged with the first engagement element.

  In addition, in one aspect of the present invention, the first engaging element of the hook-and-loop fastener is fixed to the back surface opposite to the light receiving surface of the flexible solar cell module, and at least a part of the back surface is fixed to the first surface. A step of covering with one engagement element; a step of fixing the second engagement element of the surface fastener to a support surface of a support that is a rigid body, and covering at least a part of the support surface with the second engagement element; And detachably engaging the first engagement element with the second engagement element, and attaching the solar cell module to the support surface of the support. A method is provided.

  Touch and close fasteners include any type of surface fastener and are not limited to a particular type. A hook-and-loop fastener is sometimes called a hook and loop fastener. Generally, a hook-and-loop fastener includes a pair of tape-like elements provided with a number of piles on one side. The pair of elements are engaged with each other by being closed so that the pile surfaces are in contact with each other. The pair of engaged elements are disengaged by applying a peeling force so as to be separated from each other. Therefore, each of the pair of elements can be peeled from each other. In addition, when the pair of elements is fixed to each of two objects that are separated from each other, the two objects can be attached to and detached from each other, and can be attached and detached.

  The solar cell module in the present application refers to any element including at least an electro-optical component that operates as a solar cell. The solar cell module includes at least a part of any kind of solar cell, more generally a single or integrated photovoltaic device. As long as it is made in this way, the solar cell module is implemented in any form such as any component, member, or assembly. For this reason, the solar cell module in this application contains the arbitrary photoelectric conversion apparatuses called a solar cell element, a photovoltaic cell, a solar cell panel, etc.

  Further, in the present application, a particularly flexible solar cell module typically uses a thin film semiconductor or an organic material, and is formed on a flexible substrate, for example, to exhibit flexibility as a whole. Means any solar cell module. The solar cell using the thin film semiconductor is not particularly limited, and includes a single nip junction, a solar cell having a pn junction, a tandem type arbitrary solar cell using a plurality of junctions, and the material of the semiconductor. Also, any material typified by silicon and germanium can be included. Further, the crystallinity of the semiconductor layer is selected from arbitrary ones such as amorphous and microcrystalline. Even in a solar cell using organic matter, the material of the power generation layer is not particularly limited. Furthermore, any flexible substrate such as a resin film substrate or a metal thin plate substrate can be employed as the flexible substrate. The flexibility in the present application is defined in detail in relation to the peeling behavior of the hook-and-loop fastener and by corresponding to the stiffness value defined in the present application. This definition will be described in detail in the description of the embodiment.

  Moreover, what is indicated by the solar cell module in the present application includes an assembly in which additional components added for any purpose are combined. Such additional component elements include, for example, a sealing resin for improving weather resistance and a reinforcing member for ensuring strength while maintaining flexibility. When an assembly is referred to as a solar cell module, the entire assembly is handled as a solar cell module unless separation is scheduled when the hook-and-loop fastener is peeled off.

  In addition, the support member in the present application refers to any object that provides a function of supporting the solar cell module from one surface. The surface of the support that faces the solar cell module side is particularly called a support surface.

  And the solar cell module assembly (solar cell module assembly) in this application means the assembly of the structure which combined the solar cell module and the support body.

  According to some embodiments of the present invention, a solar cell module assembly and a solar cell module can be obtained that can be easily detached from a support and attached to the same or another support as required. Can do.

It is a schematic cross section which shows the structure of the conventional solar cell module assembly. It is a schematic cross section which shows the structure of the solar cell module assembly of one embodiment of this invention. It is the perspective view which looked at the flexible solar cell module removed from the support body from the 1st engagement element side of the surface fastener in the solar cell module assembly of one embodiment of the present invention. It is the perspective view which looked at the support body which removed the flexible solar cell module from the 2nd engagement element side of the surface fastener in the solar cell module assembly of one embodiment of this invention. It is a schematic cross-sectional view showing the configuration of the solar cell module assembly, when one end of the flexible solar cell module is caused to start peeling the hook-and-loop fastener (FIG. 5 (a)), and the peeling proceeds. The structure of the solar cell module assembly at the time (FIG. 5 (b)) when it is made to show is shown. FIG. 3 is a schematic diagram showing a measurement arrangement for determining the value of stiffness introduced in an embodiment of the present invention. It is a schematic cross section which shows the structure (FIG. 7 (a)) of the rigidity examination sample using a board | plate material, and the mode of peeling (FIG.7 (b) and (c)). In embodiment with this invention, it is a schematic cross section of the solar cell module assembly which is a modification which makes the support surface of a support body a curved surface. In embodiment with this invention, it is a perspective view which shows the example of the flexible solar cell module which arrange | positions the 1st engaging element of a surface fastener only in part. In embodiment with this invention, it is a perspective view which shows the example of the support body which arrange | positions the 2nd engaging element of a hook_and_loop | surface fastener only in part. In embodiment with this invention, it is a perspective view which shows the structure of another support body to which the flexible solar cell module of a solar cell module assembly is attached. In embodiment with this invention, it is a schematic cross section of the solar cell module assembly obtained by directly adhering a flexible solar cell module and a support body with an adhesive agent. In embodiment with this invention, it is a schematic cross section which shows the structure of the solar cell module assembly using the support body provided with flexibility.

  Hereinafter, embodiments of the present invention will be described. In the following description, unless otherwise specified, common parts or elements are denoted by common reference numerals throughout the drawings. In the drawings, each element of each embodiment is not necessarily shown in a scale ratio.

<First Embodiment>
One embodiment proposed in the present application combines a flexible solar cell module with a support using a hook-and-loop fastener. For a proper understanding of the significance of the present embodiment, first, a mechanism that the inventors of the present application have identified as a cause of difficulty in peeling the surface fastener in a conventional solar cell module assembly will be described. In short, when a hook-and-loop fastener is to be peeled off in a conventional solar cell module assembly, it is necessary to peel off almost simultaneously in the entire area where the hook-and-loop fastener is engaged. It is said that the necessary force is excessive. A more detailed mechanism will be clarified by the description of the peeling action of the hook-and-loop fastener in the conventional solar cell module assembly.

[Removal behavior of hook-and-loop fastener: When the solar cell module and the support are both rigid bodies (conventional example)]
FIG. 1 is a cross-sectional view showing the structure of a conventional solar cell module assembly 800. A conventional solar cell module assembly 800 generally includes a solar cell module 81, a hook-and-loop fastener 3, and a support 2. Here, the hook-and-loop fastener 3 has a first engagement element 31 and a second engagement element 32. The first engaging element 31 and the second engaging element 32 are engaged with each other within a certain area facing each other. Hereinafter, a surface range in which the first engagement element 31 and the second engagement element 32 engage with each other is referred to as an “engagement region”.

  The solar cell module 81 includes a single crystal solar cell element 84 and a glass plate 86. The glass plate 86 is used for the purpose of preventing accidental breakage of the single crystal solar cell element 84. Since the glass plate 86 is exposed on one surface of the solar cell module 81, the one surface is a light receiving surface 94 that receives irradiation light to the single crystal solar cell 84 when viewed from the entire solar cell module 81. It has become. Therefore, the single crystal solar cell 84 receives external light through the glass plate 86 and generates power. A single crystal solar cell 84 is disposed on the other surface of the solar cell module 81, and the single crystal solar cell 84 is sealed or sealed with a sealing resin 96 for improving weather resistance.

  The first engagement element 31 of the hook-and-loop fastener 3 is fixed to the back surface 92 of the solar cell module 81, that is, the surface opposite to the light receiving surface 94 with sufficient strength. This adhering is realized by adhering the first engaging element 31 to the sealing resin 96. On the other hand, the second engaging element 32 of the surface fastener is fixed to the support surface 22 of the support body 2 with sufficient strength, for example, by adhesion. When the first engaging element 31 and the second engaging element 32 are engaged with each other, when a tensile force that separates them from each other and a shearing force that shifts them are applied, the surface fastener 3 is caused by a reaction force, that is, a reaction to these forces. As a holding effect. As described above, in the conventional solar cell module assembly 800, the solar cell module 81 is attached to the support 2 by the surface fastener 3 having the first engagement element 31 and the second engagement element 32.

  Here, the solar cell module 81 used in the conventional solar cell module assembly 800 is a rigid body. This is because the single crystal solar cell element 84 embedded in the solar cell module 81 is not flexible and the glass plate 86 is not flexible. Hereinafter, the solar cell module 81 is referred to as a “rigid solar cell module 81”. The definitions of the terms “flexibility” and “rigid body” used throughout this application will be described later.

  The surface fastener 3 in the conventional solar cell module assembly 800 that employs the rigid solar cell module 81 exhibits a specific peeling behavior when the rigid solar cell module 81 is detached from the support 2. Specifically, when both the rigid solar cell module 81 and the support body 2 are rigid bodies, when the rigid solar cell module 81 is removed from the support body 2, the engagement of the hook-and-loop fastener 3 is released in a very short time. Is done. In the entire engaging area of the first engaging element 31 and the second engaging element 32, the peeling is completed in a very short time. This peeling behavior is referred to as “cleavage removal” in the present application. Here, even when the area of the engagement area between the first engagement element 31 and the second engagement element 32 is enlarged, both the support 2 and the rigid solar cell module 81 are sufficiently rigid. When it is a high rigid body, the entire surface is peeled off simultaneously. If the separation of the engagement area of the hook-and-loop fastener 3 results in simultaneous separation of the entire surface, a force sufficient to cause the separation simultaneously in the entire engagement area is required. Therefore, as long as the peeling behavior of the hook-and-loop fastener 3 is the entire surface simultaneous peeling, when the area of the engagement area between the first engagement element 31 and the second engagement element 32 is enlarged, the peeling is performed in proportion to the area. The force required for this will also increase.

  When the operation of actually removing the rigid solar cell module 81 from the support 2 is performed, another problem arises. When the area of the engagement area of the first engagement element 31 and the second engagement element 32 is large, force is uniformly applied to the entire engagement area of the first engagement element 31 and the second engagement element 32. It becomes difficult. For this reason, the force applied in order to remove becomes local with respect to the rigid solar cell module 81 and the support body 2.

  Thus, when removing the rigid solar cell module 81 in the solar cell module assembly 800, it is necessary to apply a strong force to the rigid solar cell module 81. Moreover, the force is local to the rigid solar cell module 81 and the support 2. Inevitably, a bending load acts on the rigid solar cell module 81 or the support 2 by the force to be removed. Here, when a bending load of a certain value or more is applied, the rigid solar cell module 81 and the support 2 that do not have flexibility are damaged due to brittle fracture. The breakage typically results in the rigid solar cell module 81 breaking into multiple pieces, or even if it does not result in apparent breakage, the rigid solar cell module 81 is microscopically internal. In some cases, the electrical operation becomes unstable due to destruction. Eventually, when the rigid solar cell module 81 is attached to the support 2 with the hook-and-loop fastener 3 engaged in a wide area, it becomes difficult to remove the rigid solar cell module 81 from the support 2 without damaging it.

  As described above, when the area of the engagement area of the first engagement element 31 and the second engagement element 32 in the hook-and-loop fastener 3 is expanded, the conventional rigid solar cell module 81 is removed from the support 2 without being damaged. This is a difficult mechanism. The cause is due to the peeling behavior of simultaneous peeling of the entire surface fastener 3 when the rigid solar cell module 81 and the support 2 are rigid bodies.

[Peeling behavior of hook-and-loop fastener: When solar cell module is flexible]
Unlike the conventional rigid solar cell module, this embodiment employs a flexible solar cell module. As a result, in this embodiment, it becomes easy to remove the solar cell module from the support. The reason is also clarified by explaining the behavior when the solar cell module is detached from the support.

  FIG. 2 is a cross-sectional view showing the structure of the solar cell module assembly 100 of the present embodiment. The solar cell module assembly 100 generally includes a solar cell module 1, a hook-and-loop fastener 3, and a support 2. Here, the solar cell module 1 of the present embodiment has flexibility. Hereinafter, the solar cell module 1 is referred to as “flexible solar cell module 1”. The hook-and-loop fastener 3 includes a first engagement element 31 and a second engagement element 32, is configured in the same manner as in the case of the conventional solar cell module assembly 800 described above, and exhibits the same function.

  Giving flexibility to the flexible solar cell module 1 used in the solar cell module assembly 100 means that the solar cell element 4 embedded in the flexible solar cell module 1 is, for example, formed on a flexible resin substrate. This is achieved by forming a thin film semiconductor solar cell formed. The rigid substrate for preventing damage like the glass plate 86 in the case of the conventional solar cell module assembly 800 is not used in the flexible solar cell module 1. The material of the sealing resin 16 is appropriately selected so as not to hinder the flexibility of the flexible solar cell module 1.

  FIG. 3 is a perspective view of the flexible solar cell module 1 removed from the support 2 from the first engagement element 31 side in the solar cell module assembly 100 of the present embodiment. Moreover, FIG. 4 is the perspective view which looked at the support body 2 which removed the flexible solar cell module 1 from the 2nd engagement element 32 side in the solar cell module assembly 100 of this embodiment. As shown in FIG. 3 and FIG. 4, the first engaging element 31 of the hook-and-loop fastener 3 is applied to the entire back surface 12 opposite to the light receiving surface 14 of the flexible solar cell module 1 and the hook-and-loop fastener 3. The second engagement elements 32 are bonded and fixed to the entire support surface 22 of the support 2. As shown in FIG. 2, the flexible solar cell module 1 is attached to the support 2 by the first engagement element 31 and the second engagement element 32 of the hook-and-loop fastener 3.

  When a force is applied to cause the end portion of the flexible solar cell module 1 to move in the direction perpendicular to the support surface 22 of the support 2 in the solar cell module assembly 100 shown in FIG. The engagement of the first engagement element 31 with the second engagement element 32 is released. FIG. 5 is a schematic cross-sectional view showing the configuration of the solar cell module assembly 100. Here, FIGS. 5 (a) and 5 (b) show the time (FIG. 5 (a)) at which the one end of the flexible solar cell module 1 is caused to start peeling the surface fastener 3 (FIG. 5 (a)) and the peeling thereof. The configuration at the time of progress (FIG. 5B) is shown. The flexible solar cell module 1 is removed from the support 2 by advancing such a peeling process of the surface fastener 3.

  In FIG. 5B, the end of the flexible solar cell module 1 at the left end of the drawing in the drawing is drawn upward in the drawing, and the peeled area of the first engagement element 31 expands. Is schematically shown. In the case of removing the flexible solar cell module 1 from the solar cell module assembly 100, the flexible solar cell module 1 is near the boundary between the portion where the hook-and-loop fastener 3 is peeled off and the portion that is engaged. Is bent (FIG. 5B). As shown in FIG. 5 (b), the portion of the flexible solar cell module 1 in the vicinity of the boundary between the peeled portion and the engaged portion is the entire flexible solar cell module 1. Will bend and bend. On the other hand, the part which has been peeled off at that time is rather extended by being pulled by the end where the external force acts and the part where the hook-and-loop fastener 3 is engaged. And if the force which causes the edge part is continuously exerted on the edge part of the flexible solar cell module 1, the area | region which has peeled will expand in the range of the engagement area of the 1st engagement element 31 and the 2nd engagement element 32 It will be done. This state of peeling contrasts with simultaneous simultaneous peeling, and in this application, such peeling behavior of a hook-and-loop fastener is referred to as “progressive peeling”.

  It should be noted that, when the flexible solar cell module 1 is detached from the support 2, when the gradual peeling is realized, the force necessary for the detachment becomes the force itself that advances the peeling of the hook-and-loop fastener 3. . In the solar cell module assembly 100, the separation can be performed if there is enough force to advance the separation of the engagement area where the first engagement element 31 and the second engagement element 32 are engaged with each other. It is. In addition, in the solar cell module assembly 100 that employs the flexible solar cell module 1, the force required for peeling does not relate to the area of the engagement area. This is a characteristic of gradual peeling. In the solar cell module assembly 100 that employs the flexible solar cell module 1, the reason that the removal from the support body 2 is possible regardless of the area of the engagement area is that the peeling behavior of the surface fastener is gradually peeling. This is because.

  In addition, when the flexible solar cell module 1 is detached from the support body 2, the vicinity of the boundary between the portions where the first engaging element 31 and the second engaging element 32 are engaged with each other is separated. Even if it bends or bends, it will not break or cause electrical malfunction. For this reason, even if it removes the flexible solar cell module 1 once attached from the support body 2 and reattaches it to the same or another support body, when operating the flexible solar cell module 1 again, a special trouble does not arise. .

[Definition of rigidity]
Next, parameters serving as indices for distinguishing a flexible solar cell module such as the flexible solar cell module 1 from a rigid solar cell module such as the rigid solar cell module 81 will be described. .

  In this application, attention is focused on whether the structural characteristics of the solar cell module are such that the removal due to peeling of the hook-and-loop fastener is troubled or not. In this application, “rigidity” defined as follows is introduced as an index for distinguishing solar cell modules from this point. FIG. 6 is a schematic diagram showing a measurement arrangement for determining the stiffness value introduced here.

First, a strip-shaped portion having a width of 0.5 to 2 cm and a total length of 5 to 15 cm is cut out from a test object (for example, a solar cell module) whose rigidity is measured to obtain a test piece to be measured. The amount measured for this test piece is the amount of deflection of the other end that occurs when one end in the longitudinal direction of the test piece is fixed and the load P is applied to the other end. (Deflection), that is, displacement δ. The direction in which the load P is applied is a direction perpendicular to the plane of the test piece, that is, the plane of the original DUT. The rigidity k introduced in the present application is the length obtained by dividing the load P by the product of the displacement δ and the width w of the test piece, excluding the fixed portion at one end from the total length of the test piece. It is defined as a value multiplied by L (hereinafter referred to as “effective length L”). That is, the rigidity k introduced in the present application is
k = (P / δ) × (L / w)
It is expressed. The effective length L is 4 to 14 cm with respect to a strip-shaped portion having a total length of 5 to 15 cm.

  The significance of defining the stiffness k in this way is to satisfy the following three requirements for the defined stiffness k. That is, the stiffness k defined under the condition that the thickness does not change from the material of the test piece is as follows: (1) When the width w and the effective length L are constant, the displacement δ is proportional to the load P; 2) When the load P and the width w are constant, the displacement δ is proportional to the effective length L. (3) When the load P and the effective length L are constant, the displacement δ is inversely proportional to the width w. Should be defined to meet the requirement. In order to determine the stiffness k so as to satisfy these requirements, the displacement δ is proportional to the load P and the effective length L and inversely proportional to the width w in the test piece of the member having the same stiffness k value. . Further, since the stiffness k should be inversely proportional to the displacement δ, the stiffness k is defined as the above equation with a fraction having the load P and the effective length L in the numerator and the width w and the displacement δ in the denominator.

  Next, the value of the stiffness k calculated in accordance with the above-described definition, and “rigid body” and “flexible” used to characterize the flexible solar cell module 1 and the support 2 in the present application. Explain the relationship between these expressions. In the present application, the expression “flexible” for the flexible solar cell module 1 is used in contrast to “rigid”. For this reason, arbitrary solar cell modules are classified as either those having flexibility or rigid bodies. In the present application, “rigid body” generally means that the peeling behavior of the hook-and-loop fastener 3 does not pass through the state shown in FIG. 5B in which the flexible solar cell module 1 and the support 2 are bent or bent. Is associated with completion. When the value of the stiffness k is larger than a certain value, it should be noted that even an elastic body is included in the range of “rigid body” in the meaning of the present application. In contrast, in the present application, “having flexibility” generally means that the flexible solar cell module 1 and the support 2 are bent before the peeling is completed in the peeling behavior of the hook-and-loop fastener 3. This is related to passing through the state shown in FIG.

  In this application, it is prescribed to be rigid or flexible by using more specific definitions. First, in order to specifically define that the solar cell module is a rigid body, the rigid body in the present application typically means that the value of the stiffness k calculated in accordance with the above definition is 1 MN / m. It corresponds to being included in the range exceeding. In contrast, the solar cell module having flexibility in this application is typically associated with the value of stiffness k being in the range of 0 MN / m to 1 MN / m. . Among the ranges associated with this flexibility, particularly in the range where the value of the stiffness k is 0.5 MN / m or less, the characteristics and effects resulting from the flexibility are clearly expressed. This is a preferable range for the rigidity k of the battery module.

  The reason why the typical numerical value range that defines the flexibility is determined in this manner is that the property used when the solar cell module has flexibility is mainly because the solar cell module is removed when the module is removed. This is because it bends and bends as shown in FIG. For example, when the flexible solar cell module is of a flexible type having a thickness of 0.85 mm, the value of the rigidity k is 0.0099 MN / m, and another flexible solar of the flexible type having a thickness of 2 mm. The value of rigidity k in the battery module is 0.12 MN / m.

  In addition, the flexible solar cell module also exhibits additional properties as an option. The property is that, for example, the flexible solar cell module is deformed into a shape along the shape of the support surface in a state where it is attached to the support, and the engagement by the surface fastener is maintained in that shape. . The stiffness k exhibited by an actual flexible solar cell module is typically, for example, 0.0099 MN / m or 0.12 MN / m as described above. This degree of rigidity k is not so large as to peel off the hook-and-loop fastener by its own elasticity. For this reason, when the solar cell module has flexibility, it is possible to prevent a problem that the surface fastener 3 is gradually peeled off with the passage of time and the flexible solar cell module is partially removed. be able to.

  The support 2 is a rigid body made of an arbitrary material such as a sufficiently thick metal plate, wood plate, resin plate, tile or the like. Whether the support 2 is a rigid body or not can also be determined by the value of the stiffness k. Even when determining whether the support 2 is a rigid body based on the value of the stiffness k, it is possible to adopt a determination based on the value of the stiffness k in accordance with the same definition as that of the solar cell module. Here, the support body 2 which is a rigid body in the present application is not limited to a uniform material having a high rigidity k. For example, in the support 2 in which the main material is a rigid body and the main material is covered with a material having a high rigidity k, the value of the rigidity k defined as described above cannot exceed 1 MN / m as a whole. In this application, it is assumed to be a rigid body. Further, the conventional rigid solar cell module 81 has a configuration in which a single crystal solar cell element 84 having a silicon layer with a thickness of about 500 μm and a glass plate 86 with a thickness of about 3 to 4 mm, for example, are laminated to each other. Therefore, the value of rigidity k exceeds 10 MN / m and is a rigid body. In the measurement of the stiffness k, for example, a test piece made from a glass plate having a thickness of about 3 mm or a test piece made from a solar cell module using glass having a thickness of about 4 mm as a whole is used. Since the upper limit of the numerical value is 10 MN / m, it is confirmed only that it exceeds 10 MN / m.

[Difference in detachment force depending on stiffness value]
A more specific proposal in the present application is to define the structural properties of a solar cell module suitable for combination with a hook-and-loop fastener by using the value of the stiffness k calculated according to the above definition as an index. It is possible. In order to explain this proposal, the results of the investigation on how the force required to remove the solar cell module attached to the support by the hook-and-loop fastener from the support varies depending on the value of the rigidity k of the solar cell module. Describe. In an experiment to investigate this change, a plate material is attached to a support with a hook-and-loop fastener, and a force (referred to as “detaching force” in this application) that is a threshold required when the plate is removed from the support by force. Measure and do. That is, a peeling experiment is performed between the plate member having a different value of the stiffness k and the support member as if it were a solar cell module. FIG. 7 shows the structure (FIG. 7A) of a sample for examining rigidity (hereinafter referred to as “stiffness examination sample”) using a plate material, and the state of peeling (FIGS. 7B and 7C). It is a schematic cross section which shows.

First, of the first engaging element 31 and the second engaging element 32 of the hook and loop fastener 3, the first engaging element 31 is on the back surface of the plate members 71 to 76, and the second engaging element 32 is the support body 2. Each is fixed to the support surface 22. Then, the plate materials 71 to 76, the hook-and-loop fastener 3 and the support body 2 are set in the arrangement as shown in FIG. The plate members 71 to 76 are a plurality of plate members having different stiffness k values, and any one of the plate members 71 to 76 is attached to the support 2 by the hook-and-loop fastener 3. Since the structure other than the plate material is the same, each of the rigidity examination samples is identified by the plate materials 71 to 76. Table 1 shows the material and thickness of each plate material used for each of the rigidity examination samples. Table 1 also shows the value of the stiffness k obtained from the displacement δ when the size of the test piece is 0.7 cm and the effective length L is 8 cm for each plate. .

  The material of the plate materials 71 to 76 in each rigidity examination sample can be evaluated only for the effect due to the difference in stiffness k in order to investigate the relationship between the detaching force for removing each plate material and the peeling behavior of the surface fastener. Is selected. This is because if the brittle fracture or plastic deformation occurs as in the case of an actual solar cell module, the influence of only the rigidity k on the peeling of the surface fastener cannot be confirmed. Here, SUS304 stainless steel (abbreviated as SUS in Table 1) is adopted as the material of the plate members 71 to 76. The dimensions of the prepared plate materials are a rectangular shape having a width of 10 cm and a length of 10 cm in common except for the thickness, and the thickness of each plate material is as shown in Table 1.

  The hook-and-loop fastener 3 fixes two types of hook-and-loop fasteners having different peel strengths to the plate materials and the supports of all the rigidity examination samples. The peel strength of the hook-and-loop fastener is 0.1 N / cm or 4 N / cm. The arrangement of the hook-and-loop fastener 3 is the entire one surface of each plate member and the entire support surface of the support. The peel strength of the hook-and-loop fastener is measured by a test method described in JIS L 3416, for example.

When preparing the rigidity examination sample as shown in FIG. 7A, the first engagement element 31 fixed to each plate member and the second engagement element 32 fixed to the support 2 are opposed to each other and closed. Then, it is engaged by pressing with an external force. This pressing condition is determined so as to be common to each stiffness examination sample. Specifically, first, the support body 2 is stationary while the support surface 22 to which the second engagement element 32 is fixed is directed vertically upward, and is directed downward to the surface to which the first engagement element 31 is fixed. Plate materials 71 to 76 are placed. Next, a pressurizing flat plate (not shown) is placed from above the plate members 71 to 76. Then, a weight (not shown) is gently placed on the upper surface of the pressurizing flat plate. This weight is adjusted according to each of the plate materials 71 to 76 so that the pressure (surface pressure) applied to the engagement region is 2 N / cm ² by the total mass of the pressing plate and each plate material. Thereafter, the weight and the pressure plate are gently lowered from the plate material. Thus, the engagement condition of the hook-and-loop fastener 3 is made constant for each plate material.

Next, the support 2 is fixed, and a force in a direction to move each plate member away from the support surface 22 is applied to the left end position of the plate member in FIG. While increasing this force at a constant rate, it is observed whether or not the separation between the first engagement element 31 and the second engagement element 32 proceeds. At that time, for each rigidity examination sample, the operation of removing 10 times while recording the maximum value of the force required to completely remove the plates 71 to 76 from the support 2 is performed, and the maximum value of the force recorded in each operation is obtained. On average, the detachment forces of the plate members 71 to 76 are used. To summarize the results, the results shown in Table 2 are obtained when the peel strength of the surface fastener is 0.1 N / cm.

Here, the column of the peeling behavior indicates whether it is gradual peeling or simultaneous peeling on the entire surface. Further, the detachability in Table 2 is expressed by stratifying the detachment force and is based on the criteria as shown in Table 3.

  That is, in the plate materials 71 and 72 (the rigidity k is 0.2 NM / m and 0.5 NM / m, respectively), the plate material 71 is caused by forces of 10 N (1.0 kgf) and 20 N (2.0 kgf), respectively. And 72 can be removed from the support 2. FIG. 7B is a schematic cross-sectional view showing the state of peeling of the plate material observed for the plate materials 71 and 72. As described above, the plate materials 71 and 72 are gradually peeled off while keeping the bent state from the support surface 22 in the same manner as the flexible solar cell module 1 of FIG. 5B. Can be advanced. That is, FIG. 7B shows a state of gradual peeling. Therefore, if the peeling of the hook-and-loop fastener 3 is continuously advanced, it is easy to remove the plate materials 71 and 72 from the support 2. Finally, as shown in FIG. 7C, the plate materials 71 and 72 are detached from the support 2.

  As shown in Table 2, the plate members 73 and 74 can also be removed by a force of 40 N and 200 N (4.1 kgf and 20.4 kgf), respectively, and at that time, schematically shown in FIG. The state of gradual peeling is clearly observed.

  On the other hand, the plate 75 can be peeled only when the force is increased to 600 N (61.2 kgf). In this plate material 75, the peeling behavior of the hook-and-loop fastener 3 is different from the plate materials 71 to 74. Specifically, when the force is increased to 600 N and the engagement between the first engagement element 31 and the second engagement element 32 starts to be released at the end, the entire separation of the engagement area is very short. Complete on time. Separation is completed in an instant without being in the state of FIG. 7 (b), and it is in a state of being removed as shown in FIG. 7 (c). That is, the peeling behavior of the hook-and-loop fastener 3 is simultaneous peeling on the entire surface. The force of 600N at this time is a force necessary for only a very short time. Since this force is a strong force exceeding 500 N, it is difficult for the operator to remove the plate member 75 from the support body only with a pulling force of the hand, for example. In particular, since it is difficult for human power to exert a strong force only for a short time, the workability of the plate material 75 is inferior to the plate materials 71 to 74. In the plate material 76 having a rigidity k larger than that of the plate material 75, even when a strong force of 800 N (81.6 kgf) is applied, the arrangement shown in FIG. 7A is maintained and the plate material 76 does not come off the support 2. Therefore, when the force is increased beyond 800 N in order to investigate how much force is required, the plate member 76 is detached from the support 2 only at 1000 N (100.2 kgf). Also in the case of this plate member 76, as in the case of the plate member 75, the state shown in FIG. 7A is changed to the state shown in FIG. The entire engagement area with the element 32 is peeled at once, and the entire surface is peeled off simultaneously. Since the force of 1000 N is larger than the force of 800 N adopted as a reference, it is determined that it is impossible for the operator to remove the plate 76 from the support by human power.

  In addition, it supplements about the experimental conditions for the investigation of Table 2. The support 2 uses, for example, a thick glass plate, and there is no need to consider its deformation. That is, the investigation results in Table 2 are for the condition that the support 2 is a rigid body. Moreover, the hook-and-loop fastener 3 is selected according to the magnitude | size (width 10cm, length 10cm) of a board | plate material.

  From the results shown in Table 2, when using a surface fastener having a weak peel strength of 0.1 N / cm, using plate materials 71 to 74 having a stiffness k of 0 MN / m to 1 MN / m, It can be seen that the gradual peeling in which the peeling progresses gradually is possible, and the operator can perform the removal work stably. Further, when the plate materials 71 and 72 having a rigidity k of 0.5 MN / m or less are used, the force required for peeling is limited to a value in a range suitable for the work, and thus the workability can be greatly improved.

Furthermore, Table 4 shows the results of a peeling experiment performed by attaching the plate members 71 to 76 to the support 2 with a surface fastener having a peeling strength as large as 4 N / cm.

Note that the detaching force of the plate member 76 in Table 4 indicates that the plate member 76 cannot be removed within the range of the measurement upper limit value (1000 N) of the measuring device. Further, the detachment criteria used for stratification are the same as in Table 3.

  The peeling behavior in the case of using a hook-and-loop fastener having a peeling strength of 4 N / cm is the same as that of each plate material in Table 2 except for the plate material 76. That is, in the plate materials 71 to 74, the state of gradual peeling as schematically shown in FIG. 7B is clearly observed. On the other hand, in the plate member 75, the state of FIG. 7B is not observed, but the entire surface is peeled off simultaneously, and the state directly changes from the state of FIG. 7A to FIG. 7C. Since the plate material 76 cannot be measured with a force exceeding 1000 N from the measurement limit of the measuring device, the hook-and-loop fastener 3 does not peel off and the plate material cannot be removed in the rigidity examination sample.

  Further, with respect to the detachability in the case of using the surface fastener having a peel strength of 4 N / cm, there are some different results as compared with the case of the surface fastener of 0.1 N / cm. That is, even in the case of a hook-and-loop fastener having a peel strength of 4 N / cm, when the plate materials 71 to 74 having a stiffness k of 0 MN / m or more and 1 MN / m or less are used, the gradual peeling that gradually advances the peeling of the hook-and-loop fastener is realized. Thus, the work to be removed by the operator can be performed stably. However, when a surface fastener of 4 N / cm is used, even if the plate has a rigidity k of 0.5 MN / m or less, the force required for peeling is not reduced to the extent that the work becomes easier.

  From the peeling experiment using the above plate material, it is confirmed that the solar cell module is “flexible” when the measured stiffness k is 0 MN / m or more and 1 MN / m or less, more preferably 0.5 MN / m. It is reasonable to relate to cases of m or less. And especially in the range of flexibility, when the value of rigidity k is 0.5 MN / m or less, there is an advantage that work becomes easy in combination with a hook-and-loop fastener having a weak peel strength. On the contrary, it is reasonable that the support and the solar cell module should be handled as “rigid bodies” when the rigidity k exceeds 1 MN / m. These numerical ranges are determined based on specific experimental conditions. Accordingly, these numerical ranges are given as examples.

[Rigidity value and detachment force in actual solar cells and components]
Next, an experiment in which the same peeling experiment as that performed using the plate material is performed using the actual solar cell module and member will be described. The sample produced in this experiment (hereinafter referred to as “real sample”) is specified by the type or member of the solar cell. Specifically, each real sample uses solar cells and members as shown in Table 5 instead of the plate material. The values of the respective stiffness k are also shown in Table 5. The size of each real sample is 10 cm wide and 10 cm long.

In addition, the size of the test piece for measuring the value of rigidity k shown in Table 5 is 2.5 cm in width for solar cell modules A and B, 8 cm in effective length, 0.5 cm in width for solar cell module C and glass plate F, and effective. The length is 15 cm, and the metal plates D and E (Galbarium steel plate (registered trademark)) have a width of 0.7 cm and an effective length of 8 cm. As shown in Table 5, the value of stiffness k for the actual sample using “solar cell module C” and “glass plate F” exceeds 10 MN / m, which is the upper limit of the measurable range, and cannot be measured.

Tables 6 and 7 show the results of peeling experiments on actual samples using the solar cells and members shown in Table 5. Table 6 shows the results of employing surface fasteners having a peel strength of 0.1 N / cm, and Table 7 shows the results of employing surface fasteners having a peel strength of 4 N / cm.


Table 3 shows the criteria for detachable stratification in Tables 6 and 7.

  As shown in Tables 6 and 7, the solar cell module A (rigidity: 0.0099 MN / m) and the solar cell module B (rigidity: 0.12 MN / m) are both problematic for removal in the actual sample. Does not occur. In this case, gradual peeling as shown in FIG. 7B is realized. Even if the results of Table 6 and Table 7 are compared, the separation force between the case where the peel strength of the surface fastener is 0.1 N / cm (Table 6) and the case where it is 4 N / cm (Table 7). Although there is a difference, the difference is only in the range of whether removal is easy or not easy. On the other hand, in the case of the metal plate D (rigidity: 2.7 MN / m) and the metal plate E (rigidity: 5.4 MN / m), the peel strength of the hook-and-loop fastener is 0.1 N / cm (Table 6). Even so, the detachment force for detaching the actual sample exceeds 1000 N, and detachment is impossible. Furthermore, in the actual sample using the solar cell module C (rigidity: more than 10 MN / m) or the glass plate F (both stiffness: more than 10 MN / m)), the solar cell module C (stiffness: more than 10 MN / m)) Battery module C and glass plate F will be damaged. For this reason, the real sample using the solar cell module C and the glass plate F cannot be removed.

  Moreover, the result of the peeling experiment based on the actual sample using the actual solar cell or member is “flexibility” based on the value of the stiffness k obtained by the peeling experiment using the rigidity examination sample of the plate materials 71 to 76 or It is consistent with the “rigid” association. That is, in an actual solar cell module, a real sample using the solar cell modules A and B to be provided with flexibility can be easily or can be removed. On the other hand, in an actual solar cell module, the real sample of the solar cell module C to be rigid cannot be removed. Moreover, even if it is a real sample using the metal plates D and E which do not use glass and are not easily damaged, it is impossible to remove them because both have a value of more than 1 MN / m and rigidity k. As described above, the result of the peeling experiment based on the actual sample is consistent with the association of “flexibility” or “rigid body” based on the value of the stiffness k.

[Preferred range of engagement area]
When the conventional rigid solar cell module 81 is used, even if the rigid solar cell module 81 can be detached when the area of the engagement area of the hook-and-loop fastener is small, the removal becomes difficult if the area is increased. Specifically, it becomes difficult to remove the rigid solar cell module 81 from the support body 2 when the engagement area of the surface fastener is larger than a certain area. In the present embodiment, the limit value of this area is 100 cm ² . This point will be described.

The fact that the above-mentioned limit value of the area is 100 cm ² is explained as follows from the results of Tables 2 and 4 in which a surface fastener having a weak peel strength is employed. The area of the engagement area between the first engagement element 31 and the second engagement element 32 of the hook-and-loop fastener 3 is set to 100 cm ² when the results obtained in Tables 2 and 4 are obtained. Here, it should be noted that the peeling behavior of the hook-and-loop fastener 3 is greatly different between the case of the plate members 71 to 74 and the case of the plate members 75 and 76 in Table 2. That is, while the plate materials 71 to 74 are gradually peeled, the plate materials 75 and 76 are all peeled simultaneously (Tables 2 and 4). In the peeling behavior of the hook-and-loop fastener 3, when the peeling gradually occurs like the plate materials 71 to 74 in FIG. 7B, the detachment force has little relation to the area of the engagement area. On the other hand, when the entire surface is peeled simultaneously like the plate members 75 and 76, the detachment force increases in proportion to the area of the engagement area. Therefore, the change in the detachment force when the area of the engagement area is further expanded to exceed the area of the engagement area of 100 cm ² can be easily inferred from the results of Tables 2 and 4. That is, in the plate materials 71 to 74, it should be possible to remove the plate material from the support member even if the area of the engagement area exceeds 100 cm ² . This is because even if the area of the engagement area is increased, if a technique such as peeling from a narrow side is employed, there will be no problem in peeling the hook-and-loop fastener. On the other hand, if the area of the engagement area in the plate members 75 and 76 is expanded beyond 100 cm ² , the detachment force increases in proportion thereto, and the removal should only become more difficult.

Of course, when an actual rigid solar cell module 81 is used in place of the plates 75 and 76, an increase in the force required for removal from the support causes further difficulty. As described above, the strong force causes a bending load on the rigid solar cell module 81, and the possibility of the rigid solar cell module 81 being damaged increases. Also from this point, if the engagement area of the hook-and-loop fastener exceeding 100 cm ² is applied to the rigid solar cell module 81, it is difficult to remove the rigid solar cell module 81 from the support 2 from the point of breakage.

Thus, from the comparison between the case of the plate members 71 to 74 and the case of the plate members 75 and 76 shown in the results of Tables 2 and 4, it is flexible when the engagement area of the surface fastener having an area exceeding 100 cm ² is applied. It can be seen that it is particularly advantageous to employ the solar cell module 1. In other words, when the rigid solar cell module 81 is attached to a rigid support with a surface fastener having an area of engagement exceeding 100 cm ² , it is difficult or impossible to remove the solar cell module. If the battery module is the flexible solar battery module 1, such difficulty does not occur even if the area of the solar battery module is 100 cm ² or more. For this reason, combined with the portability of the flexible solar cell module 1 itself, the application of the solar cell module assembly 100 employing the flexible solar cell module 1 is greatly expanded.

[Selection of hook and loop fastener]
The hook-and-loop fastener 3 can use any type of hook-and-loop fastener. The first engaging element 31 and the second engaging element 32 of the hook-and-loop fastener 3 can be either of the same type or different type. Here, when the first engagement element 31 and the second engagement element 32 are of different types, the first engagement element 31 and the second engagement element 32 may be a male body and a female body, respectively. On the contrary, each may be a female body and a male body. The first engaging element 31 and the second engaging element 32 of the surface fastener 3 are typically formed in a tape shape and used in pairs. A plurality of piles for engagement are planted on one surface of each tape-like engagement element. Each engaging element is of any type. For example, in the first engagement element 31 and the second engagement element 32 used as a pair, a combination of one and the other is used as a hook tape and a loop tape, respectively, and a hook tape and a napping A tape, a mushroom tape and a loop tape, a mushroom tape and a napping tape, and the like are employed. In these examples, the hook tape and the mushroom tape are sometimes called a male body, and the loop tape and the napping tape are sometimes called a female body. In addition, in each drawing of this application, each pile of the 1st engaging element 31 and the 2nd engaging element 32 of the hook_and_loop | surface fastener 2 is typically shown only by the regular arrangement | sequence of a rectangular parallelepiped.

  When a plurality of supports to which the flexible solar cell module 1 may be attached are used, the second engaging elements 32 fixed to the respective supports are fixed to the flexible solar cell module 1. The first engagement element 31 and the first engagement element 31 are unified. This is because the flexible solar cell module 1 can be attached to and detached from each support.

  The first engagement element 31 and the second engagement element 32 of the hook-and-loop fastener 3 cover at least a part of each surface of the back surface of the flexible solar cell module 1 and the support surface of the support body 2. Although the material of the first engagement element 31 and the second engagement element 32 is not particularly limited, for example, a polymer material such as polyethylene, polypropylene, polyamide, polyester, or metal is adopted. Further, the fixing method between the flexible solar cell module 1 and the first engagement element 31 and between the support 2 and the second engagement element 32 is not particularly limited. For example, fixing methods using adhesion, welding, fusion, and sewing can be used alone or in combination.

  There is a preferred range for the peel strength of the surface fastener 3 of the present embodiment. Specifically, for the hook-and-loop fastener 3, one having a lower limit of peel strength of preferably 0.1 N / cm or more, more preferably 0.2 N / cm or more is used. The upper limit of the peel strength of the hook-and-loop fastener 3 is preferably 4 N / cm or less, and more preferably 2 N / cm or less. If the peel strength of the hook-and-loop fastener 3 is weak, for example, the flexible solar cell module 1 may fall off the support 2 only by wind force acting on the flexible solar cell module 1. When the peel strength is 0.1 N / cm or more, such a drop-out hardly occurs, and when the peel strength is 0.2 N / cm or more, the drop-off does not occur. Moreover, when peeling strength exceeds 2 N / cm, at the time of the operation | work which removes the flexible solar cell module 1, it becomes difficult to peel off the surface fastener 3, and workability | operativity falls. Furthermore, when peeling strength exceeds 4 N / cm, the probability that the flexible solar cell module 1 will be damaged, for example by an excessive bending load increases.

<First Embodiment: Modification 1>
[Apply to curved surface]
The flexible solar cell module 1 employed in the present embodiment can be deformed along the support surface of the support body due to its own flexibility. For this reason, the support surface to which the flexible solar cell module 1 can be attached is not limited to a flat surface. That is, even a solar cell module assembly having a curved support surface is included in this embodiment.

  FIG. 8 is a cross-sectional view of a modified solar cell module assembly 200 in which the support surface of the support is a curved surface in the present embodiment. The solar cell module assembly 200 has the same structure as the solar cell module assembly 100 shown in FIG. 2 except that the support surface 22C of the support 2C is curved.

  Here, when the 1st engagement element 31 and the 2nd engagement element 32 are tape-shaped, the 1st engagement element 31 and the 2nd engagement element 32 itself are also provided with flexibility. For this reason, the first engagement element 31 and the second engagement element 32 bend or bend along the shape not only on the support surface of the support body but also on the back surface of the flexible solar cell module 1. The hook-and-loop fastener 3 exerts sufficient engagement force on the support surface 2C as in the case of the solar cell module assembly 100 using the flat support surface 2 shown in FIG.

  Further, the support surface 22C of the support 2C has a curved surface shape corresponding to the geometric characteristics when the flexible solar cell module 1 is bent. Specifically, in the case of the flexible solar cell module 1 that can be expanded along a plane and allowed to be bent so as to be wound into a roll shape, for example, the support surface 22C is, for example, acceptable. It is regarded as a developable surface. Note that the developable surface generally refers to a curved surface that can be superimposed on a flat surface by an operation of simply unfolding each part without expansion or contraction. For example, the cylindrical and conical side surfaces are both developable surfaces, but the spherical surface is not a developable surface.

  Thus, this embodiment is applied also when a support surface is a curved surface. If the solar cell module is a conventional rigid body having a certain area or more, the support surface of the support body needs to conform to the shape of the rigid solar cell module. . That is, when the conventional rigid solar cell module is used, a great restriction is imposed on the shape of the support surface of the support. On the other hand, in this embodiment which combines the flexible solar cell module 1 with the hook-and-loop fastener 3, there is no special restriction | limiting in the shape of the support surface of a support body.

  In addition, it should be noted that the flexible solar cell module 1 of the solar cell module assembly 200 can be the same as that of the solar cell module assembly 100. For example, the same flexible solar cell module 1 is attached to a flat support surface in some cases and normally operates as a power source as a part of the solar cell module assembly 100, and in other cases, is attached to a curved support surface. It is also possible to operate normally as a power source as a part of the solar cell module assembly 200.

<First Embodiment: Modification 2>
[Embodiment Using Flexible Solar Cell Module: Partially Arranged Surface Fastener]
In the description so far, the hook-and-loop fastener 3 has been described on the assumption that the entire area of the first engagement element 31 is engaged with the entire area of the second engagement element 32, and all the areas of both are the engagement areas. . However, in this embodiment, it is not essential that the hook-and-loop fastener is disposed on the entire back surface of the flexible solar cell module or the entire support surface of the support. That is, for example, a modification in which the first engagement element 31 and the second engagement element 32 of the hook-and-loop fastener 3 are fixed so as to cover only a part of the back surface of the solar cell module or only a part of the support surface is also of the present embodiment. Can be implemented as part.

  FIG. 9 is a perspective view showing an example of a flexible solar cell module in which the first engaging element 31 of the hook-and-loop fastener 3 is arranged only in part. FIG. 10 is a perspective view showing an example of a support body in which the second engaging element 32 of the hook-and-loop fastener 3 is arranged only in part. As shown in FIGS. 9 and 10, the first engagement element 31 or the second engagement element 32 of the hook-and-loop fastener 3 according to the present embodiment can take a structure that is disposed only on a part of the surface to be fixed. . In addition, the combination of the 1st engagement element 31 or the 2nd engagement element 32 arrange | positioned only in one part which can be implemented as this embodiment is the following three cases typically. First, the first engagement element 31 is disposed only on a part of the flexible solar cell module 1 and the second engagement element 32 is disposed on the entire surface of the support 2. Second, when the first engagement element 31 is disposed on the entire back surface 12 of the flexible solar cell module 1 and the second engagement element 32 is disposed only on a part of the support surface 22 of the support 2. It is. Third, both the first engagement element 31 and the second engagement element 32 are respectively only a part of the back surface 12 of the flexible solar cell module 1 and a part of the support surface 22 of the support 2. It is a case where it is arranged only.

  When the first engaging element 31 or the second engaging element 32 of the hook-and-loop fastener 3 is disposed only on a part of the flexible solar cell module 1 or the support 2, the arrangement pattern is a lattice pattern or a checkered pattern. , Polka dots, stripes, etc. The striped pattern is a striped pattern in which, for example, when the flexible solar cell module 1 has a rectangular shape, a large number of lines extending in a direction along one of the peripheral edges of the flexible solar cell module 1 are arranged. is there. This stripe pattern is formed by one or a plurality of line-shaped unit engagement elements 31a or unit engagement elements 32a included in the first engagement element 31 or the second engagement element 32 (FIG. 9 or FIG. 10). ). Here, when arranged in a striped pattern, the direction in which the unit engagement element 31 a or the unit engagement element 32 a extends is the direction in which peeling proceeds when the flexible solar cell module 1 is removed from the support 2. It becomes possible to turn to. Of the stripes, a stripe pattern in which each unit engagement element extends in parallel with the direction in which peeling proceeds is particularly referred to as a vertical stripe, and a stripe pattern in which each unit engagement element extends in a direction perpendicular thereto is referred to as a horizontal stripe. Therefore, whether it becomes a vertical stripe shape or a horizontal stripe shape is determined by the relationship with the direction in which peeling of the surface fastener 3 proceeds when the flexible solar cell module 1 is removed. For example, when the flexible solar cell module 1 shown in FIG. 9 is reversed with the left and right sides of the paper as the axis and is attached to the support 2 shown in FIG. 10, either one of the left and right ends of the paper If the flexible solar cell module 1 is removed so that peeling proceeds from the first to the other end, the stripe patterns in FIGS. 9 and 10 are vertically striped.

  Generally, it is possible to save the cost of the hook-and-loop fastener 3 by arranging one or both of the first engagement element 31 and the second engagement element 32 only on a part of the surface to be fixed. There is. This has another advantage. The advantage is unique when a striped pattern, particularly a vertical striped pattern, is employed. Specifically, the unit engagement element 31a or the unit engagement element 32a is arranged so that one or both of the first engagement element 31 and the second engagement element 32 have a vertically striped pattern. . In this vertical striped arrangement, while the peeling of the hook-and-loop fastener 3 proceeds, the boundary between the peeling area of the hook-and-loop fastener 3 and the engaging area is the same continuous unit engaging element. It progresses seamlessly. Therefore, the width of the unit engagement element from which the engagement is released is constant during the progress of the peeling, and the force necessary for the peeling is constant throughout the progress of the peeling. If the peeled area has an arrangement pattern that moves from the engaged part to the non-engaged part or vice versa at the break of the unit engaging element, the peeled area is engaged. The advancing speed at the boundary with the region is rapidly accelerated or decelerated, and strong stress may be partially generated in the flexible solar cell module 1 or the support 2. Such a phenomenon does not occur in the vertical stripe pattern, and the peeling of the surface fastener proceeds smoothly. That is, the vertical stripe pattern is more advantageous in that the flexible solar cell module 1 or the support 2 is prevented from being damaged due to unexpected acceleration and deceleration that occur during the progress of the gradual peeling.

  As described above, the solar cell module assemblies 100 and 200 manufactured according to the present embodiment remove the flexible solar cell module 1 from the support 2 (or support 2C), and if necessary. It can be easily reattached to the same or another support.

<Examples and Comparative Examples>
Next, Example 1 and Example 2 of a solar cell module assembly that employs a flexible solar cell module and a hook-and-loop fastener manufactured based on the present embodiment will be described. In addition, Comparative Example 1 of a solar cell module assembly formed by bonding flexible solar cell modules and Comparative Example 2 of a solar cell module assembly employing a conventional rigid solar cell module and a hook-and-loop fastener will be described. To do.

[Example 1]
A sample of Example 1 of the solar cell module assembly having the same structure as that of the solar cell module assembly 100 shown in FIG. 2 was produced. In this Example 1 sample, a flexible type solar cell module 1 having a width of 50 cm, a length of 100 cm, and a thickness of 0.85 mm was used. The value of the rigidity k of the flexible solar cell module 1 is 0.0099 MN / m. The test piece from which the value of the stiffness k was measured had a width w of 2.5 cm and an effective length L of 8 cm. The material located on the back surface 12 side of the sealing resin 16 was an ethylene-tetrafluoroethylene copolymer. The back surface 12 of the sealing resin 16 was subjected to plasma treatment for later adhesion.

  In addition, as the surface fastener 3 in the sample of Example 1, a surface fastener having a peel strength of 4 N / cm when the first engagement element 31 and the second engagement element 32 are combined was used. The first engagement element 31 was a polyamide resin hook tape, that is, a male body. The first engagement element 31 was adhered to the entire back surface 12 of the flexible solar cell module 1 with a butyl rubber adhesive. As described above, the first engagement element 31 of the hook-and-loop fastener 3 is fixed to the back surface 12 opposite to the light receiving surface 14 of the flexible solar cell module 1 and arranged to cover at least a part of the back surface 12.

  The support 2 was a galvalume steel plate having a width of 50 cm, a length of 100 cm, and a thickness of 1.0 mm. The second engagement element 32 is a loop tape made of polyamide resin, that is, a female body. The second engagement element 32 was bonded to the entire support surface 22 of the support 2 with a butyl rubber adhesive. As described above, the second engagement element 32 of the hook-and-loop fastener 3 is fixed to the support surface 22 of the support body 2 and arranged to cover at least a part of the back surface 12 of the support surface 22.

  FIG. 11 is a perspective view showing the structure of another support 2B. The support 2B is a glass plate having a width of 50 cm, a length of 100 cm, and a thickness of 3.0 mm. A second engagement element 32B is bonded to the entire support surface 22B of the support 2B with a butyl rubber adhesive. The peel strength when this second engagement element 32B was combined with the first engagement element 31 was 4 N / cm. The second engagement element 32B was a polyamide resin loop tape, that is, a female body. As described above, the second engaging element 32B of the hook-and-loop fastener 3 is disposed on the rigid support 2B so as to cover at least a part of the support surface 22B.

  In the sample of Example 1 of the configuration of the solar cell module assembly 100 (FIG. 2), a part of the periphery of the flexible solar cell module 1 spreading in a planar shape is gripped, and the flexible solar cell module 1 is partly held there. A force in the direction of pulling toward the light receiving surface 14 was applied. As a result, as shown in FIG. 5A, the hook-and-loop fastener 3 started to peel from the end portion. Subsequently, when the portion of the flexible solar cell module 1 is pulled in the direction of the force, the flexible solar cell module 1 is supported by the support 2 by gradual peeling as schematically shown in FIG. Was partially removed from. That is, since the flexible solar cell module 1 is a flexible type, at the time of the progress of peeling, at least a part of the flexible solar cell module 1 having a planar spread is bent and the peeling of the hook-and-loop fastener 3 proceeds. As a result, the range in which the engagement between the first engagement element 31 and the second engagement element 32 is released has increased. At this time, the detaching force for removing the flexible solar cell module 1 from the support 2 was approximately 60 N. Finally, the entire flexible solar cell module 1 was removed from the support 2. The state where the first engagement element 31 was fixed to the entire back surface 12 of the detached flexible solar cell module 1 was maintained.

  Next, the first engagement element 31 of the flexible solar cell module 1 removed from the support 2 was closed so as to contact the second engagement element 32B of another support 2B, and pressed by an external force. Thus, the first engagement element 31 was releasably engaged with the second engagement element 32B, and the flexible solar cell module 1 was attached to the support surface of the other support 2B. Thus, the flexible solar cell module 1 removed from the support body 2 was able to be attached to the support body 2B again.

  Next, when the end portion of the flexible solar cell module 1 is pulled up in a direction perpendicular to the surface of the support 2B, the flexible solar cell module 1 is a flexible type, and therefore gradually supports the support 2B by peeling. Began to peel off. The peeling in this case was also due to peeling with the engagement surface between the first engagement element 31 and the second engagement element 32B of the hook-and-loop fastener 3 as a boundary surface, that is, peeling of the hook-and-loop fastener 3. At this time, the detaching force for removing the flexible solar cell module 1 from the support 2B was approximately 60N. Finally, the flexible solar cell module 1 was detached from the support 2B. The state where the first engagement element 31 was fixed to the entire back surface of the detached flexible solar cell module 1 was maintained. The process of removing the flexible solar cell module 1 from the support 2B was the same as the process of removing the end of the flexible solar cell module 1 from the support 2 described above.

Then, a peel test was performed using three size examination samples having the same cross-sectional structure as the sample of Example 1 and changed in size, and the size, detachment force, and peel behavior in the case of the flexible solar cell module. , And the detachment relationship was investigated. Table 8 shows the results. The hook-and-loop fastener with a peel strength of 4 N / cm was used. Moreover, the force for removing was set to such an orientation that the peeling proceeds in the longitudinal direction in the size examination samples other than 10 cm × 10 cm. That is, the release of the hook-and-loop fastener proceeds toward the other short side when it is released by a force that causes only one of the sides (short sides) located at both ends in the longitudinal direction of each size examination sample.

  The detachment force in Table 8 was measured in the same manner as the detachment force in Table 4, and the detachability was hierarchized based on Table 3 based on the detachment force. As described above, the difference in the detachment force is moderate between the size examination samples whose areas differ by 1000 times or more, and the removal of the solar cell module 1 was easy or possible in any of the size examination samples.

[Comparative Example 1]
FIG. 12 is a cross-sectional view of a solar cell module assembly 900 obtained by directly fixing the flexible solar cell module 1 and the support 2 with an adhesive. The entire surface of the flexible solar cell module 1 and the support 2 was fixed by the adhesive, and the size was 10 cm wide and 10 cm long. A sample of Comparative Example 1 of a solar cell module assembly having the same structure as that of the solar cell module assembly 900 shown in FIG. 12 was produced. In the sample of Comparative Example 1, the flexible solar cell module 1 and the support 2 were the same type as that used in the sample of Example 1. The flexible solar cell module 1 was bonded to the support 2 with a moisture-curing acrylic modified silicone adhesive 5.

  When the end of the flexible solar cell module 1 was pulled up in a direction perpendicular to the surface of the support 2 in the sample of Comparative Example 1, the flexible solar cell module 1 was removed from the support 2 with a force of up to 500 N. I couldn't. Therefore, when the force was further increased, the solar cell module of the sample of Comparative Example 1 was damaged when the force reached around 750N.

[Comparative Example 2]
A sample of Comparative Example 2 of a solar cell module assembly having the same structure as that of the conventional solar cell module assembly 800 shown in FIG. 1 was produced. In the sample of Comparative Example 2, a single-crystal solar cell element 84 is sealed in the rigid solar cell module 81. Since the single-crystal solar cell element 84 is not flexible, a glass plate 86 is used for the structure of the rigid solar cell module 81 for the purpose of preventing the damage. For this reason, the rigid solar cell module 81 was a rigid body as a whole. The rigid solar cell module 81 had a width of 50 cm, a length of 100 cm, and a thickness of 4.0 mm. The material on the back side of the sealing resin 96 was an ethylene-tetrafluoroethylene copolymer, and the surface was plasma treated. The first engagement element 31, the support body 2, and the second engagement element 32 of the hook-and-loop fastener 3 were the same as those in the sample of Example 1. Further, similarly to the sample of Example 1, the second engagement element 32 was bonded to the support surface 22 of the support 2 with a butyl rubber adhesive.

  Comparative Example 2 When the end of the sample rigid solar cell module 81 was pulled up in a direction perpendicular to the surface of the support 2, the rigid solar cell module 81 was damaged by a force of 600 N.

Then, a peel test was performed using four size examination samples having the same cross-sectional structure as the sample of Comparative Example 2 and varied in size, and the size and detachment force in the case of the rigid solar cell module, the peel behavior, and the removal. The relationship between separability was investigated. Table 9 shows the results. A hook-and-loop fastener having a peel strength of 0.1 N / cm was used. The force for detachment was set so that the peeling proceeded in the longitudinal direction in the size examination samples other than 10 cm × 10 cm.

The detachment force in Table 9 was measured in the same manner as the detachment force in Table 4. The detachability was hierarchized based on Table 3 from the detachment force. The relationship between the area and the detachability in the case of the rigid solar cell module is greatly different from the relationship between the area and the detachability in the case of the same cross-sectional structure as the sample of Example 1 shown in Table 8 above. In the case of the rigid solar cell module, at the stage of an area of 3 cm × 5 cm, that is, 15 cm ² , separation is possible, but the detachment force has already been 150 N. Moreover, the peeling behavior was simultaneous peeling on the entire surface. This is a result of reflecting that the solar cell module is a rigid body. The size review sample having an area of 5 cm × 10 cm, that is, 50 cm ² , and the size review sample having an area of 10 cm × 10 cm, that is, 100 cm ² are both rigid solar powers when the removal force is 400 N. The battery module has been damaged.

<First Embodiment: Other Modifications>
Like the Example mentioned above, this embodiment can be implemented also as an installation method of a flexible solar cell module. That is, in this embodiment, the first engaging element of the hook-and-loop fastener that is fixed to the back surface opposite to the light receiving surface of the solar cell module and covers at least a part of the back surface is fixed to the support surface of the support body that is a rigid body. And attaching the solar cell module to the support surface of the support by releasably engaging the second engagement element of the surface fastener that covers at least a part of the support surface. It is also implemented as an installation method.

  Furthermore, this embodiment can also be implemented as a method for removing the flexible solar cell module. That is, in this embodiment, the first engaging element of the hook-and-loop fastener that is fixed to the back surface opposite to the light receiving surface of the solar cell module and covers at least a part of the back surface is fixed to the support surface of the support body that is a rigid body. And a method for removing the flexible solar cell module, including the step of peeling from the second engaging element of the hook-and-loop fastener covering at least a part of the support surface.

  This method of removing the flexible solar cell module can also be implemented as an even more advantageous removal method. That is, in the above-described method for removing a flexible solar cell module, a step of gripping a part of the periphery of the flexible solar cell module spreading in a planar shape, and a part of the solar cell module facing the light receiving surface of the solar cell module. Applying a pulling force, pulling a portion of the solar cell module caused in the force direction while deflecting at least a portion of the planar extension of the solar cell module, and a first engagement element Advantageously, expanding the range of the solar cell module in which the engagement with the second engagement element is released, and separating the first engagement element and the second engagement element from each other. is there. By combining such steps, the gradual peeling of the hook-and-loop fastener is realized.

<Second Embodiment>
The present invention can also be implemented as an embodiment different from the first embodiment described above. In 2nd Embodiment, the support body which is not a rigid body, ie, the support body provided with flexibility, is employ | adopted.

  FIG. 13 is a cross-sectional view showing the structure of a solar cell module assembly 300 using the support body 2F having flexibility or flexibility. The solar cell module assembly 300 is produced by attaching the flexible solar cell module 1 described in the first embodiment to a support surface 2F of a support body 2F having flexibility with a surface fastener 3.

  Also in the solar cell module assembly 300 of the present embodiment, the peeling behavior of the hook-and-loop fastener 3 is gradually peeling as described in relation to FIG. 5 in the first embodiment. That is, the first engagement element 31 of the hook-and-loop fastener 3 fixed to the back surface 12 of the flexible solar cell module 1 gradually starts from the second engagement element 32 fixed to the support surface 22F of the support 2F. It is possible to peel off. Therefore, the problem of difficulty of removal does not occur when the area of the hook-and-loop fastener engaging area increases as in the case where the rigid solar cell module 81 is employed.

  In addition to facilitating the removal of the solar cell module, the flexible solar cell module 1 having flexibility in the present embodiment also brings another positive technical significance. First, when the support body 2F has flexibility and a deformation | transformation is accept | permitted, the flexible solar cell module 1 attached to the support body 2F with the hook_and_loop | surface fastener 3 maintains the attached state. . Here, the situation of the flexible solar cell module 1 when the support body 2F has flexibility is shown in FIG. 2 and FIG. 2 in which the flat and curved support bodies are respectively employed in the description of the first modification of the first embodiment. It can be said that both situations of 8 are combined. Therefore, the flexible solar cell module 1 has flexibility so that it can be adapted to both the planar support 2 (FIG. 2) and the curved support 2C (FIG. 8). It deform | transforms so that its own shape may be adapted also to the deformation | transformation of the support body 2F. That is, in this embodiment, the solar cell module assembly 300 has flexibility as a whole.

  The fact that the solar cell module assembly 300 exhibits flexibility as a whole has been described in the first embodiment as a support to which the flexible solar cell module 1 is attached by the surface fastener 3. This means that all of the support 2, the support 2C, and the support 2F are included. For this reason, the second embodiment in which the support is not limited to a rigid body is an embodiment that removes the restriction on the selection range of the support to which the flexible solar cell module 1 is attached by the hook-and-loop fastener 3, and the solar cell module is portable. This contributes to further expansion of applications that take advantage of. Another advantage of the overall flexibility of the solar cell module assembly 300 is another advantage. That is, the same applies to the solar cell module assembly 300 in which the flexible solar cell module 1 is combined with the flexible support cell 2F when the flexible support cell 2F is handled on the premise of flexibility. Can be handled. For example, when the support body 2F having flexibility is wound in a roll shape when stored, the solar cell module assembly 300 in which the flexible solar cell module 1 is attached to the support body 2F is also a roll shape. It becomes possible to wind it. Examples of the flexible support body 2F include any flexible material such as a tent film used outdoors and various film structures used for building roofs. Can do.

  The embodiment of the present invention has been specifically described above. The above-described embodiments and examples are described for explaining the invention, and the scope of the invention of the present application should be determined based on the description of the claims. Moreover, the modification which exists in the scope of the present invention including other combinations of each embodiment is also included in a claim.

  The present invention contributes to the widespread use of any power device or electrical device that includes such a solar cell as a part thereof by expanding the use of the solar cell module or the solar cell module assembly.

100, 200, 800, 900 Solar cell module assembly 1 Flexible solar cell module 81 Rigid solar cell module 12, 92 Back surface 14, 94 Light receiving surface 16, 96 Sealing resin 2, 2B, 2C, 2F Support member 22, 22B, 22C, 22F Support surface 3 Surface fastener 31 First engagement element 32, 32B Second engagement element 31a, 32a Unit engagement element 4, 84 Solar cell element 5 Moisture curable acrylic modified silicone adhesive 71-76 Plate material 86 glass plate

Claims (19)

A solar cell module having flexibility;
A first engaging element of a hook-and-loop fastener that is fixed to the back surface opposite to the light receiving surface of the solar cell module and covers at least a part of the back surface;
A support that is a rigid body;
A second engagement element of the hook-and-loop fastener that is fixed to the support surface of the support and covers at least a part of the support surface;
The solar cell module assembly in which the first engagement element and the second engagement element are detachably engaged with each other. The solar cell module assembly according to claim 1, wherein a value of rigidity k of the solar cell module is 0 MN / m or more and 1 MN / m or less. The solar cell module assembly according to claim 2, wherein a value of rigidity k of the solar cell module is 0.5 MN / m or less. The solar cell module according to claim 1, wherein the flexibility of the solar cell module is such that the surface fastener is gradually peeled when the solar cell module is detached from the support. Assembly. The solar cell module assembly according to claim 1, wherein the peel strength of the surface fastener is 0.1 N / cm or more and 4 N / cm or less. The solar cell module assembly according to claim 5, wherein the peel strength of the surface fastener is 0.2 N / cm or more and 2 N / cm or less. The solar cell module assembly according to any one of claims 1 to 6, wherein the support surface of the support is a curved surface. The solar cell module according to any one of claims 1 to 6, wherein an area of an engagement area in which the first engagement element and the second engagement element are engaged with each other is 100 cm ² or more. Assembly. Either the first engagement element or the second engagement element includes one or more line-shaped unit engagement elements,
The solar cell module assembly according to any one of claims 1 to 6, wherein the unit engaging element has a stripe pattern extending along one of the peripheral edges of the solar cell module. A light receiving surface;
A back surface opposite to the light receiving surface;
A first engaging element of a hook-and-loop fastener fixed to the back surface and covering at least a part of the back surface;
The first engagement element is releasably engaged with the second engagement element of the hook-and-loop fastener that is fixed to the support surface of the support and covers at least a part of the support surface. A flexible solar cell module. The solar cell module according to claim 10, wherein a value of rigidity k of the solar cell module is 0 MN / m or more and 1 MN / m or less. The solar cell module according to claim 11, wherein a value of rigidity k of the solar cell module is 0.5 MN / m or less. The solar cell module according to claim 10, wherein the flexibility of the solar cell module is such that when the solar cell module is removed from the support, the surface fastener is gradually peeled off. . The solar cell module according to claim 10, wherein the peel strength of the hook-and-loop fastener is 0.1 N / cm or more and 4 N / cm or less. The solar cell module according to claim 14, wherein the peel strength of the surface fastener is 0.2 N / cm or more and 2 N / cm or less. The solar cell module according to claim 10, wherein the support is a rigid body. The solar cell module according to any one of claims 10 to 16, wherein an area of an engagement area in which the first engagement element engages with the second engagement element is 100 cm ² or more. The first engagement element includes one or more line-shaped unit engagement elements;
The solar cell module according to claim 10, wherein the unit engagement element has a stripe pattern extending along one of the peripheral edges of the solar cell module. Fixing the first engaging element of the hook-and-loop fastener to the back surface opposite to the light receiving surface of the solar cell module having flexibility, and covering at least a part of the back surface with the first engaging element;
Fixing the second engagement element of the hook-and-loop fastener to a support surface of a support that is a rigid body, and covering at least a part of the support surface with the second engagement element;
Engaging the first engagement element with the second engagement element in a releasable manner and attaching the solar cell module to the support surface of the support body. A method for manufacturing a solar cell module assembly .