JP5230585B2 - Solar cell module and manufacturing method thereof - Google Patents

Description

  The present invention relates to a solar cell module installed in a building such as a house or a building, and a manufacturing method thereof.

  Conventionally, as a solar cell module, a transparent substrate (glass) is arranged on the light receiving surface side, and a plurality of solar cells connected in series are arranged side by side on the back surface side of the transparent substrate, and the plurality of solar cells are sealed. A solar cell module having a structure in which a solar cell panel is configured by sealing with a stop resin and a frame is attached to a peripheral portion of the solar cell panel is known. In this solar cell module, a predetermined strength is secured by the transparent substrate and the frame.

  A solar cell module is generally installed in a building such as a house or a building and exposed to wind and rain. And the force which works so that it may push down vertically may act by the snow accumulation etc. which accumulated on the surface. Since the solar cell module has a flat plate shape with the surface as a light receiving surface, the solar cell module is bent so as to bend downward by receiving a force acting so as to be pushed down vertically. Therefore, it has been conventionally proposed to arrange a reinforcing frame on the back surface of the module so that the module is not bent and damaged downward. By adopting such a structure, when the module is bent downward, it can be prevented from being damaged without being bent by a predetermined amount or more by being pressed against the reinforcing frame (for example, see Patent Document 1).

International Publication No. 2008/139610 Specification

  In general, the reinforcing frame is disposed so as to cross the center of the back surface of the solar cell module, and is fixed to two long side frames facing each other. Conventionally, a cutout for inserting the reinforcing frame has been provided at the fixing position of the reinforcing frame of the long side frame. That is, the notch was provided in the center part of the longitudinal direction of two long side frames.

  On the other hand, the force pushed down vertically by the above-mentioned snow accumulation or the like acts most on the central portion of the solar cell module. Therefore, there is a notch at the position where the pressing force of the solar cell module is the largest, and it is necessary to secure a predetermined strength at a portion other than the notch, which causes an increase in cost and improves. It was sought after.

  This invention is made | formed in view of the above, Comprising: It aims at providing the solar cell module which can enlarge intensity | strength without accompanying a cost increase, and its manufacturing method.

  In order to solve the above-described problems and achieve the object, a solar cell module of the present invention includes a solar cell panel formed by arranging a plurality of solar cells and outer edges of two opposite sides of the solar cell panel. A first frame and a second frame each having a U-shaped support section having a U-shaped cross-section that is provided on the back side of the panel holding section and supports the panel holding section; Extending across the back surface of the solar cell panel, both ends are fixed in the U-shaped support portions of the first frame and the second frame, and the solar cell panel is supported when the solar cell panel is bent to the back surface side. A notch for inserting both ends of the reinforcing frame into the U-shaped support portion on the back side wall of the U-shaped support portion at a position different from the longitudinal center position of the first frame and the second frame. Wherein the but has been formed.

  Moreover, the manufacturing method of the solar cell module of the present invention includes a solar cell panel in which a plurality of solar cells are arranged side by side, and a panel that extends along outer edges of two opposite sides of the solar battery panel and protects the outer edge. A first frame and a second frame that are provided on the back surface side of the holding portion and the panel holding portion and have a U-shaped supporting portion having a U-shaped cross section for supporting the panel holding portion, and so as to cross the back surface of the solar cell panel And a reinforcing frame for supporting the solar cell panel when the solar cell panel is bent to the back surface side, both ends of which are fixed in the U-shaped support portions of the first frame and the second frame. In this manufacturing method, a notch is formed in the back side wall of the U-shaped support portion at a position different from the longitudinal center position of the first frame and the second frame, and both ends of the reinforcing frame are Was inserted into the mold support, then, by rotating or sliding the reinforcing frame and moving in a fixed position.

  According to the present invention, the solar cell panel can be supported by the reinforcing frame when the solar cell panel bends to the back side, and is cut out at a position different from the longitudinal center position of the first frame and the second frame. By forming, the strength of the solar cell module can be increased. Moreover, since the reinforcing frame moves to the fixed position with both ends inserted into the U-shaped support part, the solar battery panel is not contacted and the solar battery panel is not damaged.

FIG. 1 is a perspective view of a solar cell module according to Embodiment 1 of the present invention as viewed from the back side. FIG. 2 is a perspective view showing a state of an initial process of assembling the solar cell module according to Embodiment 1 of the present invention. FIG. 3 is an exploded perspective view of a main part of the solar cell panel. 4 is a cross-sectional view taken along line DD of FIG. 1 showing a cross section of the second frame. FIG. 5 is a perspective view showing a state in which the reinforcing frame is inserted from the back surface side into the intermediate assembly in which the frame is attached to the outer edge portion of the solar cell panel. FIG. 6 is a perspective view showing a state where the inserted reinforcing frame is rotated and moved to a fixed position. FIG. 7 is an enlarged view of a portion surrounded by a one-dot chain line in FIG. 6 showing a state in which the inserted reinforcing frame is rotated and moved to a fixed position. FIG. 8 is a perspective view showing a state in which the reinforcing frame that has been rotated and moved to the fixed position is screwed. FIG. 9 is a perspective view showing details of the shape of the reinforcing frame. FIG. 10 is a cross-sectional view taken along line AA in FIG. 1 showing a state in which the reinforcing frame is bridged between the first frame and the second frame. FIG. 11: is the perspective view seen from the back surface side of Embodiment 2 of the solar cell module concerning this invention. FIG. 12: is the perspective view seen from the back surface side of Embodiment 3 of the solar cell module concerning this invention.

  Embodiments of a solar cell module and a manufacturing method thereof according to the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

Embodiment 1 FIG.
FIG. 1 is a perspective view of a solar cell module according to Embodiment 1 of the present invention as viewed from the back side. FIG. 2 is a perspective view showing a state of an initial process of assembling the solar cell module according to Embodiment 1 of the present invention. FIG. 3 is an exploded perspective view of a main part of the solar cell panel. In addition, FIG. 2 has shown a mode that the solar cell module was seen from the table | surface (light-receiving surface) side. On the other hand, FIG.1 and FIG.3 has shown a mode that the solar cell module was seen from the back side.

  1 and 2, a solar cell module 50 includes a substantially rectangular flat plate-like solar cell panel 40 and a rectangular shape that surrounds the outer edge of the solar cell panel 40 over the entire circumference and supports the solar cell panel 40 from a mounting base or the like. And a frame-like frame 10. The frame 10 includes a first frame 11 and a second frame 12 that cover two opposing long sides, a third frame 13 and a fourth frame 14 that cover two opposing short sides, and a back surface side of the solar cell panel 40. A reinforcing frame 15 is provided between the first frame 11 and the second frame 12.

  The reinforcing frame 15 has both ends on the back side of the solar cell panel 40 so as to extend in parallel with the third frame 13 and the fourth frame 14 through the center P of the solar cell panel 40 and cross the solar cell panel 40. Are fixed to the first frame 11 and the second frame 12. The fixing positions of the first frame 11 and the second frame 12 of the reinforcing frame 15 are indicated by A and B in FIG. When the downward pressing force due to snow accumulated on the surface acts as shown by white arrows in FIG. 1, the solar cell panel 40 bends downward (upper side in FIG. 1) to bend, but the reinforcing frame It can be prevented from being damaged without being pressed and bent more than a predetermined amount.

  As a feature of the present embodiment, the first frame 11 and the second frame 12 are separated from each other by the same distance in the different directions from the center in the longitudinal direction. Notches 21 and 22 are formed. A terminal box 16a and a cable 16b extending from the terminal box 16a are provided on the back surface of the solar cell panel 40.

  As shown in FIG. 3, the laminated body constituting the main part of the solar cell panel 40 includes a light-transmitting substrate 1 made of a transparent material such as glass and a light-receiving surface side sealed made of a transparent resin from the light-receiving surface side. A solar cell array 5 in which a material (first resin layer) 2, a plurality of solar cells 3 arranged in a grid pattern, and lead wires 4 connecting the plurality of solar cells 3 in series are wired; A back side sealing material (second resin layer) 6 made of a transparent resin and a back sheet 7 having excellent weather resistance are laminated in this order. The light-receiving surface side sealing material 12 and the back surface side sealing material 15 are integrated by heat treatment, and the solar cell array 6 is resin-sealed to form a resin sealing layer. The solar cell module 50 is manufactured by covering the outer peripheral edge of the laminated body having such a configuration with a frame 10 (FIGS. 1 and 2) (not shown) over the entire circumference.

  FIG. 4 is a cross-sectional view taken along the line DD of FIG. 1 showing a cross section of the second frame 12. FIG. 4 shows a cross section of the second frame 12, but the first frame 11 has a similar shape. As shown in FIG. 4, the first frame 11 and the second frame 12 include a panel holding portion 18 having a U-shaped cross section provided on the light receiving surface side (lower side in FIG. 4) of the solar cell module, and the solar cell module. And a U-shaped support portion 19 having a U-shaped cross section provided on the back surface side (upper side in FIG. 4).

  The panel holding part 18 surrounds the outer edge part of the solar cell panel 40 over the entire circumference, holds the outer edge part, and protects the outer edge part. On the other hand, the U-shaped support portion 19 is formed on the back side of the panel holding portion 18 over the entire length of the frame to reinforce the panel holding portion 18 and the solar cell panel 40 is provided on the roof of the building. It is supported from a mounting stand (not shown). The U-shaped support portion 19 includes three walls, that is, a panel side wall 19a and a back side wall 19c provided to face each other, and a central wall 19b provided therebetween. The panel side wall 19a of the U-shaped support part 19 may be considered to be integrated with the back side wall of the panel holding part 18. The reinforcing frame 15 (not shown) is housed and fixed at the U-shaped support portion 19 at both ends (FIG. 10).

  A more detailed structure will be described along the procedure for attaching the reinforcing frame 15. FIG. 5 is a perspective view showing a state in which the reinforcing frame is inserted from the back surface side into the intermediate assembly in which the frame is attached to the outer edge portion of the solar cell panel. FIG. 6 is a perspective view showing a state where the inserted reinforcing frame is rotated and moved to a fixed position. FIG. 7 is an enlarged view of a portion surrounded by a one-dot chain line in FIG. 6 showing a state in which the inserted reinforcing frame is rotated and moved to a fixed position. FIG. 8 is a perspective view showing a state in which the reinforcing frame that has been rotated and moved to the fixed position is screwed.

  The first cutout 21 and the second cutout 22 are provided so as to be at different positions in the longitudinal direction when the first frame 11 and the second frame 12 are arranged to face each other. Specifically, the first notch 21 and the second notch 22 are provided at positions that are point-symmetric with respect to the center P of the solar cell panel 40 of the first frame 11 and the second frame 12. Thus, by providing the first notch 21 and the second notch 22 at positions that are point-symmetric with respect to the center P, the first frame 11 and the second frame 12 have the same shape, and the number of component types is reduced. I am trying.

  As shown in FIG. 5, the reinforcing frame 15 is inclined with respect to the final fixed position (a straight line connecting the fixed positions A and B), and the first notch 21 and the second notch. 22, it is dropped between the first frame 11 and the second frame 12. The reinforcing frame 15 thus inserted between the first frame 11 and the second frame 12 is then rotated in a predetermined direction as shown by arrows in FIG. B is positioned. As shown in FIGS. 7 and 8, the first frame 11 and the second frame 12 are fastened by a fixing screw 25.

  As shown in FIG. 7, the second notch 22 is formed in the back side wall 19 c of the U-shaped support part 19 of the second frame 12. The size of the second notch 22 is such that when the reinforcing frame 15 is dropped from the second notch 22, the end of the reinforcing frame 15 is placed on the panel side wall 19 a of the U-shaped support part 19. It is sized to ride. The first notch 21 is also formed in the first frame 11 in the same manner. When the reinforcing frame 15 rotates or slides and moves to the fixed position, the end portion of the reinforcing frame 15 extends from the dropped position to the fixed positions A and B, and the side wall of the U-shaped support part 19. It moves between 19a and the back side wall 19c. By adopting such a structure, the reinforcing frame 15 is prevented from coming into contact with the back sheet 7 and the back sheet 7 is prevented from being damaged.

  FIG. 9 is a perspective view showing details of the shape of the reinforcing frame 15. As shown in FIG. 9, the reinforcing frame 15 has an I-shaped cross section including a long flat plate-like vertical piece 15a and long flat plate-like horizontal pieces 15b and 15c extending in the longitudinal direction on both sides of the vertical piece 15a. It is made. A female screw hole 15d into which the fixing screw 25 engages is screwed into both ends of the vertical piece 15a (FIGS. 7 and 8).

  FIG. 10 is a cross-sectional view taken along the line AA in FIG. 1 showing a state in which the reinforcing frame 15 is bridged between the first frame 11 and the second frame 12. As shown in FIG. 10, when the reinforcing frame 15 is rotated or slid along the surface of the solar cell panel 40, the movement is not prevented by interfering with the horizontal pieces 15b and 15c of the reinforcing frame 15. An escape groove 19d is formed in the central wall 19b of the U-shaped support portion 19 of the first frame 11 and the second frame 12 at positions facing the horizontal pieces 15b, 15c.

  At the fixed positions A and B of the first frame 11 and the second frame 12, small pieces of stoppers 27 and 28 are formed on the central wall 19a of the U-shaped support portion 19 toward the center of the solar cell panel 40. It is erected. The stoppers 27 and 28 are in contact with the ends of the rotating reinforcing frame 15 and press the reinforcing frame 15 to the fixed positions A and B. That is, the stoppers 27 and 28 are provided so as to come into contact with the surface on the opposite side to the first notch 21 and the second notch 22 of the reinforcing frame 15 fixed at the fixing positions A and B.

  As described above, according to the solar cell module 50 of the present embodiment, the U-shaped support portion 19 of the first frame 21 and the second frame 12 extends at both ends so as to cross the back surface of the solar cell panel 40. It has a reinforcing frame 15 that is fixed inside and supports the solar cell panel 40 when the solar cell panel 40 is bent to the back side, and is different from the longitudinal center positions of the first frame 11 and the second frame 12. A first notch 21 and a second notch 22 for inserting both ends of the reinforcing frame 15 into the U-shaped support part 19 are formed on the rear side wall of the U-shaped support part 19 at the position. Therefore, the solar cell panel 40 can be supported by the reinforcing frame 15 when the solar cell panel 40 is bent to the back surface side, and the first frame 11 and the second frame 12 are different from the longitudinal center positions. By forming the first cutout 21 and the second cutout 22, the rigidity of the solar cell module 50 can be improved and the reinforcing frame 15 can be moved to a fixed position without contacting the solar cell panel 40. The solar cell panel 40 is not damaged.

  In the present embodiment, the reinforcing frame 15 is bridged between the first frame 11 and the second frame 12, but the reinforcing frame 15 is bridged between the third frame 13 and the fourth frame 14. Also good. In this case, the first notch 21 and the second notch 22 are formed in the third frame 13 and the fourth frame 14.

  Further, in the first frame 11 and the second frame 12 of the present embodiment, when the reinforcing frame 15 is rotated or slid, the side of the reinforcing frame 15 is prevented from interfering with the horizontal pieces 15b and 15c of the reinforcing frame 15. A relief groove 19d is formed in the central wall 19b of the U-shaped support portion 19 at a position facing the pieces 15b and 15c. The width of the relief groove 19d is slightly larger than the thickness of the lateral pieces 15b and 15c. Thus, when the reinforcing frame 15 rotates or slides along the surface of the solar cell panel 40, it may be used as a guide groove for guiding the movement of the reinforcing frame 15.

Embodiment 2. FIG.
FIG. 11: is the perspective view seen from the back surface side of Embodiment 2 of the solar cell module concerning this invention. In the solar cell module 51 of the present embodiment, notches 21B and 22B for inserting the reinforcing frame 15 at positions different from each other in the same direction from the longitudinal center of the first frame 11 and the second frame 12. Is formed. The first cutout 21 </ b> B and the second cutout 22 are provided at different positions in the longitudinal direction of the first frame 11 and the second frame 12. That is, the first notch 21B and the second notch 22B are provided at positions that are not point-symmetrical with respect to the center P of the solar cell panel 40 of the first frame 11 and the second frame 12.

  The reinforcing frame 15 is dropped between the first frame 11 and the second frame 12 from the first cutout 21B and the second cutout 22B while being inclined with respect to the final fixing positions A and B. Inserted and inserted. After that, it is slid and rotated in a predetermined direction to be positioned at final fixed positions A and B. A stopper (not shown) is provided so as to abut on a surface opposite to the first notch 21B and the second notch 22B of the reinforcing frame 15 fixed at the fixing positions A and B, that is, on the same side surface. ing.

  According to the solar cell module 51 of the present embodiment, the effect that the first frame 11 and the second frame 12 have the same shape cannot be obtained, but other effects similar to those of the first embodiment can be obtained. it can.

Embodiment 3 FIG.
FIG. 12: is the perspective view seen from the back surface side of Embodiment 3 of the solar cell module concerning this invention. In the solar cell module 52 of the present embodiment, a first reinforcement frame 15B and a second reinforcement frame 15C are provided at a predetermined distance across the center P of the solar cell panel 40. Notches 21C and 22C for inserting the first reinforcing frame 15B and the second reinforcing frame 15C are provided at the fixing positions of the first reinforcing frame 15B.

  The second reinforcing frame 15C is inserted from the notches 21C and 22C, slid to its own fixing position, and fastened by a fixing screw (not shown). The first reinforcing frame 15B is inserted from the notches 21C and 22C, and is fastened to the position with a fixing screw (not shown) as it is.

  According to the solar cell module 52 of the present embodiment, when two reinforcing frames are provided, the same effect as in the second embodiment can be obtained.

  The solar cell module according to the present invention is useful for a solar cell module installed in a building such as a house or a building, and is particularly suitable for a solar cell module installed in a region where there is a lot of snow or a region where severe wind and rain occur. Yes.

DESCRIPTION OF SYMBOLS 1 Translucent board | substrate 2 Light-receiving surface side sealing material 3 Solar cell 4 Lead wire 5 Solar cell array 6 Back surface side sealing material 7 Back sheet 10 Frame 11 1st frame 12 2nd frame 13 3rd frame 14 4th frame 15, 15B, 15C Reinforcement frame 15a Vertical piece 15b, 15c Horizontal piece 15d Female screw hole 16a Terminal box 16b Cable 18 Panel holding part 19 U-shaped support part 19a Panel side wall 19b Central wall 19c Back side wall 19d Escape groove 21, 21B, 21C 1st notch 22, 22B, 22C 2nd notch 25 Fixing screw 27, 28 Stopper 40 Solar cell panel 50 Solar cell module A, B Fixing position P Center of solar cell panel

Claims (7)

A solar cell module having a solar cell panel formed by arranging a plurality of solar cells,
Each of the solar cell panels extends along two opposing outer edges, a panel holding part that protects the outer edge, and a U-shaped cross section that is provided on the back side of the panel holding part and supports the panel holding part. A first frame and a second frame having a U-shaped support portion of the mold;
The solar cell panel extends across the back surface of the solar cell panel, and both end portions are fixed in the U-shaped support portion at the first position of the first frame and the second position of the second frame, And a reinforcing frame that supports the solar cell panel when bent to the back side,
A back side wall of the U-shaped support portion at a third position different from both the longitudinal center position of the first frame and the first position, the longitudinal center position of the second frame, and the second position. Cutouts for inserting both end portions of the reinforcing frame into the U-shaped support portion are formed on the back side wall of the U-shaped support portion at a fourth position different from any of the above,
The third position and the fourth position are different in the longitudinal direction of the solar cell module,
Moving both ends of the reinforcing frame inserted into the U-shaped support part from the notch of each of the first frame and the second frame to the first position and the second position; The solar cell module, wherein the reinforcing frame is fixed to the first frame and the second frame. The reinforcing frame extends and is fixed so as to cross the center of the back surface of the solar cell panel,
The solar cell module according to claim 1, wherein the third position and the fourth position are point-symmetric with respect to a center of the solar cell panel. The notch is formed on a back side wall of the U-shaped support portion of the first frame and the second frame, and the size of the notch is determined when the reinforcing frame is inserted from the notch. The solar cell module according to claim 1 or 2, wherein an end portion of the reinforcing frame is sized so as to ride on a panel side wall of the U-shaped support portion. A stopper is provided at a fixed position of the reinforcing frame of the U-shaped support portion of the first frame and the second frame so as to abut against the end portion of the reinforcing frame and stop the movement of the reinforcing frame. the solar cell module according to any one of claims 1 3, characterized in that. The reinforcing frame has an I-shaped cross section including a vertical piece and a horizontal piece extending in the longitudinal direction on both sides of the vertical piece,
An escape groove is formed in a central wall of the U-shaped support portion of the first frame and the second frame so as not to buffer the lateral piece when the reinforcing frame rotates along the solar cell panel surface. The solar cell module according to any one of claims 1 to 4 , wherein: The reinforcing frame has an I-shaped cross section including a vertical piece and a horizontal piece extending in the longitudinal direction on both sides of the vertical piece,
End portions of the central walls of the U-shaped support portions of the first frame and the second frame are along the first frame and the second frame when the reinforcing frame rotates along the solar cell panel surface. The solar cell module according to any one of claims 1 to 4 , wherein a guide groove is formed so as to move. A solar panel formed by arranging a plurality of solar cells,
Each of the solar cell panels extends along two opposing outer edges, a panel holding part that protects the outer edge, and a U-shaped cross section that is provided on the back side of the panel holding part and supports the panel holding part. A first frame and a second frame having a U-shaped support portion of the mold;
The solar cell panel extends across the back surface of the solar cell panel, and both end portions are fixed in the U-shaped support portion at the first position of the first frame and the second position of the second frame, In a method for manufacturing a solar cell module comprising a reinforcing frame that supports the solar cell panel when bent to the back side,
A back side wall of the U-shaped support portion at a third position different from both the longitudinal center position of the first frame and the first position, the longitudinal center position of the second frame, and the second position. with any different Ri, and of the third and position, forms a notch in each of the back side wall of the U-shaped support of a fourth position longitudinally position that Do different of the solar cell module Aside,
In the third position and the fourth position, both end portions of the reinforcing frame are inserted into the U-shaped support portions of the first frame and the second frame through the notches, respectively.
Thereafter, the reinforcing frame is rotated or slid to move both ends of the reinforcing frame to the first position and the second position,
Both ends of the moved reinforcing frame are fixed to the first frame and the second frame. A method of manufacturing a solar cell module.

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