JP6059879B2 - Support structure for supporting solar panel - Google Patents

Description

The present invention relates to an improvement of the supporting member fixing structure of the solar cell panel.

  In recent years, with the increase in the size of solar cell panels, production costs have been reduced and power generation efficiency has been improved, and the weight per sheet tends to increase. Furthermore, since the solar cell panel is installed outdoors, it is important to have a structure that can easily withstand the influence of the natural environment and can withstand, for example, the pressure of wind and rain or the pressure of snow load due to snowfall.

  The solar cell panel, for example, encloses a solar cell and a filler in a gap in which a pair of glass plates composed of a light-receiving side glass plate (front glass plate) and a non-light-receiving side glass plate (back glass plate) are opposed to each other. It has the structure which seals between the peripheral parts of a glass plate airtightly with a sealing material. Moreover, when modularizing a solar cell panel, there are a thing which provides a frame material in the peripheral part of a solar cell panel, and a thing which does not use a frame material. Each module has a structure that suppresses bending of the solar cell panel by adhering and fixing a support member (also referred to as “back frame”) to the back surface of the solar cell panel (see, for example, Patent Document 1).

  Since the glass plate used for the solar cell panel has a thickness of about 1 to 5 mm, it is bent so that the central portion is recessed downward and the peripheral portion is warped upward by the pressure of wind or snow. In order to suppress such bending of the central portion, a plurality of support members are fixed to the back surface of the solar cell panel. And as a means for fixing the support member to the back surface of the solar cell panel, a fixing method is adopted in which the back surface of the solar cell panel and the fixed surface of the support member are bonded with an adhesive.

  In this fixing method using an adhesive, the stress acting on the back surface of the solar cell panel is dispersed by making the thickness of the adhesive uniform and suppressing variation in the adhesive strength between the solar cell panel and the support member. Thus, it is manufactured so that stress concentration does not occur at a specific location on the back surface of the solar cell panel.

  Here, as a means for suppressing the stress concentration as described above, the spacer for keeping the thickness of the adhesive uniform is between the back surface of the solar cell panel and the fixed surface of each supporting member together with the adhesive. Be placed. A resin material or the like is used as the spacer.

JP 2011-109072 A

  A silicone adhesive is used as an example of an adhesive that fixes the support member to the back surface of the solar cell panel. In addition, in a solar cell panel production line, after a spacer and an adhesive are formed on the back surface of the solar cell panel or the fixed surface of the support member using a dispenser device, the fixed surface of the support member is used as the back surface of the solar cell panel. Adhere to and fix. At that time, the adhesive is in a fluid state, and the spacer is arranged on the fixed surface of the support member, and the spacer has a predetermined gap with the back surface of the solar cell panel. Therefore, the adhesive has a uniform thickness in the gap. Filled.

  That is, in order to fix the support member to the back surface of the solar cell panel, a spacer such as a resin and an adhesive are disposed at a predetermined position between the back surface of the solar cell panel and the support member. And the space | interval of the back surface of a solar cell panel and a supporting member is kept constant with a spacer, and the adhesive agent is filled into the gap | interval.

  As described above, after the support member is placed on the back surface of the solar cell panel on which the spacers and the adhesive are formed, the solar cell panel is conveyed while the adhesive is in a fluid state, and the support member is vibrated in the process. When propagating or an external force is applied to the support member, the fixing position of the support member may be shifted with respect to the back surface of the solar cell panel.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a support member fixing structure of the solar cell panel in which the above-described problems.

  In order to solve the above problems, the present invention has the following means.

The present invention is a support member fixing structure for fixing the support member supporting the back surface of the solar cell panel to the back surface of the solar cell panel with an adhesive,
Uniformly coercive Chi the thickness of the adhesive between the support member and the back surface of the solar cell panel, and has a spacer front surface to have a tacky and less
On the fixed surface of the support member opposed to the rear surface of the front Symbol solar panels, a plurality of the spacers in the longitudinal direction of the support member are disposed at predetermined intervals, and the adhesive between the spacer between A plurality of rows formed by arranging the agents are arranged at predetermined intervals in the width direction of the support member, and a space is formed between the adjacent rows .

  According to the present invention, since at least the surface of the spacer that keeps the thickness of the adhesive formed between the back surface of the solar cell panel and the support member at a predetermined value has adhesiveness, the support member is attached to the back surface of the solar cell panel. Can be temporarily fixed. Therefore, in the production line, it is possible to prevent the support member from being displaced from a predetermined fixed position even when vibration or external force is applied until the adhesive is cured, and the reliability of the production process can be improved.

It is a perspective view which shows the state which fixed the supporting member to the back surface of the solar cell panel. It is a longitudinal cross-sectional view which shows the internal structure of a solar cell panel. It is a disassembled perspective view which shows one Example of the supporting member fixing structure of the solar cell panel by this invention. It is a disassembled perspective view which shows the modification 1 of the fixing method of a solar cell panel and a supporting member. It is a disassembled perspective view for demonstrating the procedure of the modification 1 of a fixing method. It is a sectional side view which shows the state after the adhesion fixation of the modification 1. It is a sectional side view which shows the state after the adhesion fixation of the modification 2. It is a perspective view which shows the modification 3 which formed the adhesive agent and the spacer in multiple rows. FIG. 10 is a perspective view exaggeratingly illustrating the degree of bending of a solar cell panel fixed to a pair of support members of Modification 3. 12 is a cross-sectional view showing a positional relationship between adhesives arranged in a plurality of rows of Modification 3 and bending of the solar cell panel. FIG. It is a perspective view which shows the modification 4 of the spacer formed in the to-be-fixed surface of a supporting member, and an adhesive agent. It is a perspective view which shows the modification 5 of the spacer formed in the to-be-fixed surface of a supporting member, and an adhesive agent. It is a top view which shows the modification 6 of the spacer formed in the to-be-fixed surface of a supporting member, and an adhesive agent. 10 is an exploded perspective view showing a fixing method of Modification 6. FIG. It is a longitudinal cross-sectional view which shows the relative position of the solar cell panel after adhesion | attachment of the modification 6, and a supporting member. It is a figure which expands and shows the fixing structure of the edge part vicinity of the solar cell panel of the modification 6. It is a figure which expands and shows operation | movement when a lift acts on the edge part vicinity of the solar cell panel of the modification 6. FIG. 10 is an enlarged perspective view showing a fixing structure in the vicinity of an end portion of a solar cell panel according to Modification 6;

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

[Configuration of solar cell module]
FIG. 1 is a perspective view showing a state in which a support member is fixed to the back surface of the solar cell panel. FIG. 2 is a longitudinal sectional view showing the internal structure of the solar cell panel. 1 and 2, the light receiving surface (light receiving surface side glass plate 22) of the solar cell panel faces downward, and the non-light receiving surface (non-light receiving surface side glass plate 24) faces upward.

  As shown in FIGS. 1 and 2, in the solar cell module 10, the support member 30 that supports the solar cell panel 20 is fixed to the back surface 20 </ b> A with an adhesive 70. The supporting member 30 is a reinforcing member that supports the solar cell panel 20 so as to suppress bending thereof, and is formed of a material having high rigidity such as a metal such as aluminum or stainless steel or a carbon fiber reinforced resin. In addition, the cross-sectional shape of the support member 30 is not particularly limited. For example, the support member 30 is rectangular (square), triangular, round (circular), E-shaped (E-shaped), H-shaped (H-shaped), I-shaped. (I-type), W-shaped (W-shaped), Z-shaped (Z-shaped), etc. may be used.

  Further, the thickness of the adhesive 70 is regulated to a predetermined thickness dimension by a pair of spacers 80A and 80B arranged near both ends in the longitudinal direction of the support member 30 (near the edge of the solar cell panel 20).

  The solar cell panel 20 includes an integrated CIS thin film solar cell element formed on a non-light-receiving surface glass plate 24 together with a solar cell adhesive filler 50 made of ethylene, vinyl acetate (EVA), etc., on a light receiving side glass. It is sealed with a plate 22. A sealing material 60 that seals between the light-receiving side glass plate 22 and the non-light-receiving side glass plate 24 is formed in the gaps 26 at the respective peripheral portions of the light-receiving side glass plate 22 and the non-light-receiving side glass plate 24. .

  The solar cell element may be a thin-film solar cell element other than those described above or a crystalline solar cell element. Further, a resin film (back sheet) may be used in place of the non-light-receiving surface side glass plate 24. Further, a frame member (not shown) that covers the side surface of the solar cell panel 20 may be attached to the peripheral portion of the solar cell panel 20.

[Mounting structure of support member 30]
FIG. 3 is an exploded perspective view showing an embodiment of the support member fixing structure of the solar cell panel 20 according to the present invention. As shown in FIG. 3, in the solar cell panel support member fixing structure 90, the support member 30 formed in a rod shape is fixed to the back surface 20 </ b> A of the solar cell panel 20 by the adhesive 70, and the adhesive 70 is formed. Spacers 80 are provided on both sides in the longitudinal direction of the formation range (adhesion region H).

  Butyl rubber is used as the spacers 80A and 80B. Butyl rubber is a polymer material that is black and has elasticity and adhesion to the surface at room temperature. The elasticity has sufficient strength to be used as a spacer, and has sufficient adhesive strength to adhere to the support member 30 or the back surface 20A of the solar cell panel and temporarily fix them. The butyl rubber may be preliminarily formed in a predetermined shape and thickness, or heated to have a predetermined shape and thickness using a dispenser device. You may apply | coat and arrange | position like this.

  Further, the spacers 80A and 80B may be any one having an adhesive force on the surface. For example, butyl rubber may be applied to the surface of a metal piece or a plastic piece, or an adhesive may be applied.

  Thus, since the surfaces of the spacers 80A and 80B have adhesiveness, the spacers 80A and 80B themselves have a temporary fixing function for securing a mutual fixing position between the solar cell panel 20 and the support member 30. In particular, since it takes a considerable time for the adhesive 70 to cure, even if vibration or acceleration is applied in the process of transporting the solar cell panel 20 in the production line, it is supported by the solar cell panel 20 due to the adhesiveness of the spacer 80. The relative fixed position with respect to the member 30 is held so as not to shift.

  As a method of arranging the spacers 80A and 80B, in the method of applying heat by using a dispenser device, the surface of the spacers 80A and 80B is further enhanced in adhesiveness by the heating temperature. Furthermore, the height dimension (thickness) of the spacers 80A and 80B can be set to have an arbitrary thickness depending on a combination of conditions such as the discharge amount and the moving speed of the resin material by the dispenser device. Therefore, by defining the height dimension (thickness) of the spacer 80, the distance between the solar cell panel 20 and the support member 30 can also be set to an arbitrary dimension.

  A predetermined amount of the adhesive 70 is applied to an arbitrary range with respect to a predetermined support member mounting position on the back surface 20 </ b> A of the solar cell panel 20.

  Further, after the adhesive 70 is formed at a predetermined position on the back surface 20A of the solar cell panel 20, the load on the support member 30 is sticky until the adhesive 70 is cured and generates a sufficient adhesive force. Supported by the spacer 80.

[Procedure for fixing with adhesive]
As shown in FIG. 3, as a procedure 1 </ b> A for fixing the solar cell panel 20 and the support member 30, an adhesive 70 is applied to the adhesion region H that fixes the support member 30 on the back surface 20 </ b> A of the solar cell panel 20. To do. In the next procedure 2A, adhesive spacers 80 are disposed on both sides in the support member extending direction (Y direction) of the bonding region H where the adhesive 70 on the back surface 20A of the solar cell panel 20 is formed. The procedures 1A and 2A may be the reverse of the above procedure (after the spacer 80 is arranged in the procedure 1A, the adhesive 70 is applied in the procedure 2A).

  In the procedure 3A, the support member 30 is placed on the adhesive 70 formed on the back surface 20A of the solar cell panel 20 and the spacers 80A and 80B having adhesiveness. At that time, the fixed surface (lower surface) of the support member 30 is temporarily fixed to the solar cell panel 20 by the adhesiveness of the surfaces of the spacers 80A and 80B. Therefore, even when the adhesive 70 is not cured, the fixing position of the support member 30 to the solar cell panel 20 is bonded by the vibration and acceleration in the process of transporting the solar cell panel 20 due to the adhesiveness of the surfaces of the spacers 80A and 80B. It is held so as not to deviate from the region H.

  Further, in the procedure 3A, since the entire length of the support member 30 is longer than that of the solar cell panel 20, the adhesive 70 formed on the back surface 20A of the solar cell panel 20 and the spacers 80A and 80B having adhesiveness are used. When mounting on top, alignment is performed such that the protruding length of the support member 30 in the longitudinal direction from the edge of the solar cell panel 20 has a predetermined dimension.

[Modification 1]
FIG. 4A is an exploded perspective view showing a first modification of the method for fixing the solar cell panel 20 and the support member 30. FIG. 4B is an exploded perspective view for explaining the procedure of Modification 1 of the fixing method.

  As shown in FIG. 4A, in the procedure 1B of the first modification, the adhesive 70 is applied to the fixing range (bonding region H) of the fixed surface 30A of the support member 30. In the next procedure 2B, adhesive spacers 80A and 80B are disposed on both sides in the support member extending direction (Y direction) of the bonding region H where the adhesive 70 of the fixed surface 30A of the support member 30 is formed. The procedures 1B and 2B may be the reverse of the above procedure (after the spacers 80A and 80B are arranged in the procedure 1B, the adhesive 70 is applied in the procedure 2B).

  In procedure 3B, the back surface 20A of the solar cell panel 20 is placed on the adhesive 70 and the spacers 80A and 80B formed on the fixed surface 30A of the support member 30, and the two members are brought into close contact with each other. At that time, the fixed surface 30A of the support portion 30 is temporarily fixed to the back surface 20A of the solar cell panel 20 by the adhesiveness of the surfaces of the spacers 80A and 80B. Therefore, even when the adhesive 70 is not cured, the fixing position of the support member 30 with respect to the solar cell panel 20 is held so as not to deviate from the adhesion region H due to vibration and acceleration in the process of transporting the solar cell panel 20.

  Further, in procedure 3B, since the entire length of the support member 30 is longer than that of the solar cell panel 20, the adhesive 70 formed on the back surface 20A of the solar cell panel 20 and the spacers 80A and 80B having adhesiveness are used. When mounting on top, alignment is performed such that the protruding length of the support member 30 in the longitudinal direction from the edge of the solar cell panel 20 has a predetermined dimension.

  Further, in step 3B, as shown in FIG. 4B, the adhesive 70 formed on the fixed surface 30A of the support member 30 and the adhesive spacers 80A and 80B are on the lower surface side, and the upper surface side of the solar cell panel 20 It is also possible to place both members in close contact with each other by placing them on the rear surface 20A.

  FIG. 5 is a side cross-sectional view showing a state after the adhesive fixing of the first modification. As shown in FIG. 5, the gap between the fixed surface 30A (upper surface) of the support member 30 and the rear surface 20A (lower surface) of the solar cell panel 20 is spaced by a pair of adhesive spacers 80A and 80B. 92 is formed, and the adhesive 70 is filled between the pair of spacers 80A and 80B in the gap 92.

[Modification 2]
FIG. 6 is a side sectional view showing a state after the adhesive fixing of the second modification. As shown in FIG. 6, the spacers 80 </ b> A to 80 </ b> C of the second modification are provided at three locations in the extending direction (Y direction) of the support member 30. In the fixing structure of the second modification, a pair of spacers 80A and 80B having adhesiveness are disposed at positions facing the edge of the solar cell panel 20, and further, adhesive is provided at an intermediate position between the edges of the solar cell panel 20. It is set so that the third spacer 80C having

  Then, the adhesive 70 is filled between the spacers 80 </ b> A to 80 </ b> C formed at three positions on the back surface 20 </ b> A of the solar cell panel 20 or the fixing position of the fixed surface 30 </ b> A of the support member 30. It is assumed that the intermediate portion of the solar cell panel 20 bends downward due to its own weight by increasing the separation distance between the pair of spacers 80A and 80B disposed at both ends due to the enlargement (larger area) of the solar cell panel 20. The In this fixing structure, adhesive spacers 80 </ b> A to 80 </ b> C are formed at three locations in the extending direction (Y direction) of the support member 30, so the height of the gap 92 in the intermediate portion of the solar cell panel 20 in the Y direction. The dimension in the direction is also secured to a predetermined dimension.

  Therefore, even when the enlargement of the solar cell panel 20 is promoted, the thickness of the adhesive 70 in the extending direction (Y direction) of the support member 30 can be made uniform.

[Modification 3]
FIG. 7A is a perspective view showing Modification 3 in which adhesive 70 and spacers 80 are formed in a plurality of rows. As shown in FIG. 7A, in the third modification, the adhesive 70 and the adhesive spacers 80 </ b> A to 80 </ b> C are dispersed in the first row and second row adhesive regions X <b> 1 and X <b> 2 in the lateral width direction of the support member 30. Deploy. As described above, the adhesive 70 and the spacers 80A to 80C having adhesiveness in the lateral width direction of the support member 30 are formed in a plurality of rows in the left-right direction (X direction) (two rows of adhesive regions X1 and X2 in FIG. 7A). By doing so, it is possible to avoid stress concentration on the bent portion (curved portion) of the solar cell panel 20. In the third modification, the first row and the second row of adhesive regions X1 and X2 are provided. However, the present invention is not limited to this, and the third row of adhesive regions may be provided in accordance with the lateral width of the support member 30. .

  For example, when the solar cell panel 20 receives lift force that is lifted by receiving upward wind pressure, if the adhesive area of the adhesive 70 is wide, the back surface of the solar cell panel 20 on both the left and right sides of the adhesive 70. There is a risk of stress concentration at 20A. This phenomenon is caused by the fact that the back surface 20A of the solar cell panel 20 maintains a planar state in the adhesive region H of the adhesive 70, whereas the both sides of the adhesive region H receive a lifting force that is directed upward from below. This is because the solar cell panel 20 in the vicinity of the boundary is deformed (curved) at an acute angle with respect to the bonding region H, and tensile stress acts.

  FIG. 7B is a perspective view exaggeratingly illustrating the degree of bending of the solar cell panel 20 fixed to the pair of support members 30 of the third modification. As shown in FIG. 7B, when a lifting force Fa (lifting force) acts on the lower surface of the solar cell panel 20 due to wind pressure, the solar cell panel 20 to which each support member 30 is bonded is separated from the support member 30. The region will be greatly bent due to the lift.

  FIG. 7C is a cross-sectional view showing the positional relationship between the adhesives 70 arranged in a plurality of rows and the bending of the solar cell panel 20 in Modification 3. As shown in FIG. 7C, in the third modification, a space 100 is formed between the adhesive 70 in the adhesive region X1 (first row) and the adhesive 70 in the adhesive region X2 (second row). . The solar cell panel 20 is fixed to the bonding regions X1 and X2 formed in two rows with respect to the fixed surface 30A of the support member 30, and the range facing the space 100 between the bonding regions X1 and X2 is not fixed. It is an area.

  Therefore, the non-fixed region of the solar cell panel 20 that protrudes to the left and right sides from the fixed surface 30A of the support member 30 bends upward. At the same time, in the space 100 between the adhesive 70 in the first row X1 and the adhesive 70 in the second row X2, the solar cell panel 20 can be bent downward. Therefore, the solar cell panel 20 is not deformed at an acute angle in the vicinity of the boundary between the bonding regions, and bends so as to be gently curved in a region facing the space 100 formed between the bonding regions X1 and X2. become. As a result, the tensile stress of the solar cell panel 20 is relaxed, and local stress concentration can be avoided. Furthermore, by dividing the adhesive region into a plurality of rows (two or more rows), the area of the adhesive 70 that comes into contact with the atmosphere increases, and the curing time of the adhesive 70 can be shortened.

[Modification 4]
FIG. 8 is a perspective view showing a fourth modification of the spacer 80 and the adhesive 70 formed on the fixed surface 30 </ b> A of the support member 30. As shown in FIG. 8, in Modification 4, the adhesive 70 </ b> A is formed in a disk shape on the fixed surface 30 </ b> A of the support member 30 by the dispenser device. Since the outer periphery of the formation pattern of the adhesive 70 </ b> A has a cylindrical shape, it can be uniformly cured from the surface toward the center, and the time until the center portion is cured is shortened.

[Modification 5]
FIG. 9 is a perspective view showing a modified example 5 of the spacers 80 </ b> A to 80 </ b> C and the adhesive 70 formed on the fixed surface 30 </ b> A of the support member 30. As shown in FIG. 9, in the modified example 5, the adhesive 70 </ b> B and the adhesive spacers 80 </ b> A to 80 </ b> C are dispersed in two rows of adhesive regions X <b> 1 and X <b> 2 in the lateral width direction (X direction) of the support member 30, Adhesive 70 </ b> B and adhesive spacers 80 </ b> A to 80 </ b> C are formed in a dispersed manner in the extending direction (Y direction) of the support member 30.

  In addition, each adhesive 70B has an elongated shape (rectangular shape) at a predetermined interval in a plurality of locations on the extending direction (Y direction) of the bonding regions X1 and X2 so as not to contact the spacers 80A to 80C having adhesiveness. Formed. Thereby, each adhesive 70B is further subdivided to increase the surface area and shorten the curing time accordingly.

[Modification 6]
FIG. 10A is a plan view showing a modified example 6 of the spacers 80 </ b> A to 80 </ b> C and the adhesive 70 formed on the fixed surface 30 </ b> A of the support member 30. As shown in FIG. 10A, in Modification 6, the entire length of the support member 30 is longer than the width L in the Y direction of the solar cell panel 20, and the spacers 80A and 80B having adhesiveness are solar cell panels 20. Are arranged so as to be located on the inner side of the end surface 20B in the Y direction (indicated by a dashed line in FIG. 10A).

  The end surface 20B of the solar cell panel 20 (in other words, the end surface of the light-receiving surface side glass plate 22 and / or the non-light-receiving surface glass plate 24 included in the solar cell panel 20) has minute micro cracks that are generated during cutting. To do. The microcracks are minute irregularities, and when the lift Fa and the load F1 applied to the solar cell panel 20 are concentrated on the end surface 20B of the solar cell panel, the microcrack is expanded from there to a large crack, and the solar cell panel 20 may be broken. There is. Therefore, in order to prevent the microcrack from expanding into a large crack, the portion serving as a support point for the lift Fa and the load F1 is arranged away from the end face 20B of the solar cell panel 20 where the microcrack exists.

  That is, in the modified example 6, as a means for suppressing expansion of cracks in the end surface 20B of the solar cell panel 20, the adhesive spacers 80A and 80B are located in the Y direction above the end surface 20B of the solar cell panel 20 serving as a crack generation source. It is arranged away from the inside by dimension L2.

  Further, the adhesive 70B is also formed at a position shifted inward by a dimension L1 in the Y direction from the end face 20B of the solar cell panel 20 that is a generation source of cracks. In addition, the space | interval L2 and the space | interval L4 may exist in the both sides of the Y direction of spacer 80A, 80B which has adhesiveness.

  Here, the distance L2 between the end surface 20B of the solar cell panel 20 and the end portions of the spacers 80A and 80B is 20 mm or more. Further, the distance L1 between the end surface 20B of the solar cell panel 20 and the end of the adhesive 70B is 60 mm or more.

  By doing in this way, it can be set as the structure where the expansion of the crack from the end surface 20B of the solar cell panel 20 does not arise easily.

  The dimensions L3 and L4 other than the above can be set to arbitrary dimensions by adjusting the set values of the dispenser device.

  FIG. 10B is an exploded perspective view showing a fixing method of Modification 6. As shown in FIG. 10B, a mark 30 </ b> C is provided on the fixed surface 30 </ b> A of the support member 30 so as to face the relative position of the end surface 20 </ b> B of the solar cell panel 20. Then, after the plurality of spacers 80A to 80C and the plurality of adhesives 70B having the above-described adhesive properties are intermittently formed in the adhesion regions X1 and X2 of the support member 30, the back surface 20A of the solar cell panel 20 is placed at a predetermined fixing position. The fixed surface 30A of the support member 30 is opposed.

  Further, the mark 30 </ b> C provided on the fixed surface 30 </ b> A of the support member 30 is aligned with the end surface 20 </ b> B of the solar cell panel 20. The support member 30 thus aligned is pressed and bonded to the back surface 20 </ b> A of the solar cell panel 20.

  FIG. 10C is a longitudinal cross-sectional view showing the relative positions of the solar cell panel 20 and the support member 30 after the adhesion of Modification 6. As shown in FIG. 10C, the edges of the spacers 80A and 80B having adhesiveness with respect to the end face 20B of the solar cell panel 20 are positioned on the inner side by the dimension L2 in the Y direction, and the edge of the adhesive 70B is in the Y direction. It is located on the inner side by the dimension L1.

[About the microcrack prevention effect of Modification 6]
FIG. 11A to FIG. 11C explain in detail the effect of preventing the microcracks of the modified example 6 of FIG. 10 from expanding into large cracks. FIG. 11A is an enlarged view showing a fixing structure near the end 20B of the solar cell panel 20 of Modification 6. An adhesive spacer 80A is disposed at a position retracted inward from the end face 20B of the solar cell panel 20 by a dimension L2 in the Y direction. Further, the adhesive 70B is provided on the inner side of the end surface 20B by a dimension L1 in the Y direction.

  FIG. 11B is an enlarged view showing the operation when the lift Fa acts on the solar cell panel 20 of Modification 6. When the lift Fa from the lower side to the upper side acts on the solar cell panel 20, the end surface 20B of the solar cell panel 20 is bent away from the adhesive spacer 80A. At this time, since the distance from the end surface 20B of the solar cell panel 20 that is the starting point of the crack to the edge of the adhesive 70B where the stress is concentrated is separated from L1, a large stress is applied to the end surface 20B of the solar cell panel 20. Does not work. Therefore, even when the lift Fa is received, the micro cracks on the end surface 20B of the solar cell panel 20 are prevented from expanding into large cracks.

  FIG. 11C is an enlarged perspective view showing a fixing structure near the end 20B of the solar cell panel 20 of Modification 6. As shown in FIG. 11C, when a load F1 from the top to the bottom acts on the solar cell panel 20, the solar cell panel 20 is supported by the spacer 80A (80B). That is, since the distance from the end surface 20B of the solar cell panel 20 that is the starting point of the crack to the edge of the spacer 80A (80B) where the stress is concentrated is separated from L2, a large stress is applied to the end surface 20B of the solar cell panel 20. Does not work. Therefore, even when the load F1 is received, the micro cracks on the end surface 20B of the solar cell panel 20 are suppressed from expanding into large cracks.

  By doing in this way, it can be set as the structure which is hard to produce the expansion of the crack from the end surface 20B of the solar cell panel 20 not only with the lift Fa from the downward direction but with respect to the load F1 from the upward direction.

DESCRIPTION OF SYMBOLS 10 Solar cell module 20 Solar cell panel 20A Back surface 20B End surface 22 Light reception side glass plate 24 Non-light reception side glass plate 26 Gap | interval 30 Support member 30A Fixed surface 40 Solar cell 50 Adhesive filler 60 for solar cells Sealing material 70, 70A, 70B Adhesive 80, 80A-80C Spacer 90 Support member fixing structure 92 Gap 100 Space X1, X2 Adhesive region

Claims (8)

A support member fixing structure for fixing a support member supporting the back surface of the solar cell panel to the back surface of the solar cell panel with an adhesive,
Uniformly coercive Chi the thickness of the adhesive between the support member and the back surface of the solar cell panel, and has a spacer front surface to have a tacky and less
On the fixed surface of the support member opposed to the rear surface of the front Symbol solar panels, a plurality of the spacers in the longitudinal direction of the support member are disposed at predetermined intervals, and the adhesive between the spacer between A plurality of rows formed by arranging the agents are arranged at predetermined intervals in the width direction of the support member, and a space is formed between the adjacent rows. Support member fixing structure.   The support member fixing structure for a solar cell panel according to claim 1, wherein the spacer is a member having adhesiveness on at least a surface and formed in a predetermined shape in advance.   The support member fixing structure for a solar cell panel according to claim 1, wherein the spacer is a resin layer in which a heated resin material is formed to a predetermined thickness.   The support member fixing structure for a solar cell panel according to any one of claims 1 to 3, wherein the spacer is formed of butyl rubber.   The said spacer is the supporting member fixing structure of the solar cell panel in any one of Claims 1-4 arrange | positioned at least on the both sides of the formation range of the said adhesive agent in the extension direction of the said supporting member.   The support member fixing structure for a solar cell panel according to any one of claims 1 to 5, wherein the spacer is disposed so as to be located on an inner side than a peripheral portion of a back surface of the solar cell panel.   The said spacer is intermittently arrange | positioned in the several places of the extension direction of the to-be-fixed surface of the said supporting member facing the back surface of the said solar cell panel, The said adhesive agent was distribute | arranged between each of several said spacers. Item 7. A solar cell panel support member fixing structure according to any one of Items 1 to 6. Support member fixing structure of a solar cell panel according to any one of arranged the adhesive is intermittent manner arranged claims 1-7 between the spacer between the columns.

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