JP2015018866A - Frame for solar cell module, and solar cell module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a frame for a solar cell module, that materializes improvement of humidity resistance and a low cost, and the solar cell module.SOLUTION: This frame for the solar cell module that is attached to the periphery of a solar cell panel 2 includes a frame 1 formed by continuously connecting short side frames 1a, 1c and long side frames 1b, 1d corresponding to respective sides of the solar cell panel 2, and the frame 1 has notches 23 notched for bending at a boundary between the short side frame 1a and the long side frame 1b, a boundary between the long side frame 1b and the short side frame 1c, and a boundary between the short side frame 1c and the long side frame 1d, each of the short frames 1a, 1c and the long frames 1b, 1d is attached to each corresponding side of the solar cell panel 2 with the frame 1 rolled around the solar cell panel 2, and the short frames 1a, 1e are overlapped at the fastening spot of the frame.

Description

  The present invention relates to a frame and a solar cell module attached to each side of a crystalline solar cell panel.

  Generally, a solar cell module is installed outdoors in consideration of power generation efficiency in order to generate solar power by irradiating solar cells. Therefore, since the solar cell module is exposed to various external forces such as wind and snow, it is necessary to ensure sufficient rigidity.

  In a crystalline solar cell module, a solar cell is sandwiched between sealing resins, and the sealing resin is sandwiched between a cover glass and a back sheet to form a solar cell sealing body (solar cell panel) with sufficient rigidity. As a means for ensuring, a method of attaching a frame made of aluminum or the like to each side of the solar cell sealing body is general.

  In the crystalline solar cell module, intrusion of moisture or the like that deteriorates the solar cell is prevented by a cover glass on the upper surface, a back sheet on the lower surface, and a frame on each end surface.

  However, for example, in the case of a rectangular crystalline solar cell module, since one frame is attached to each side, there are a total of four gaps between four frames each. There is a risk of becoming. Therefore, in order to improve the moisture resistance of the crystalline solar cell module, it is necessary to close the gap.

  In addition, for example, in a rectangular crystalline solar cell module, four frames are required to attach one frame to each side, and adjacent frames must be fastened by screws or the like. A fastening part is required.

  In order to provide consumers with not only solar cell modules but also cheaper products, it is necessary to reduce costs, but it is also possible to reduce costs by reducing the number of parts. In the case of a solar cell module, if the four fastening portions between the frames described above can be reduced, parts required for fastening can be reduced, and cost reduction can be achieved.

  Patent Document 1 discloses a technique related to frame connection in a solar cell module. Patent Document 1 discloses that an L-shaped joint is inserted between two adjacent frame bars at the corners of a frame, and an exposed portion of the L-shaped joint is covered with a protective sleeve.

  Patent Document 2 discloses a structure in which a frame is bent to cover four sides.

Utility Model Registration No. 3163287 JP 2010-165750 A

  However, even with the technique disclosed in Patent Document 1, a gap is formed between the protective sleeve and the frame bar to form an intrusion path for moisture and the like, and the moisture resistance deteriorates. In addition, since the adjacent frame bars must be fastened by the L-shaped joint and the protective sleeve, it is necessary to fasten at least four places in the rectangular solar cell module.

  Further, even with the technique disclosed in Patent Document 2, there is a problem in that a gap is generated at the corner of the fastening portion of the folded frame to form an intrusion path for moisture and the like and the moisture resistance deteriorates.

  This invention is made | formed in view of the above, Comprising: It aims at obtaining the flame | frame for solar cell modules and solar cell module which implement | achieved the improvement of moisture resistance and cost reduction.

  In order to solve the above-described problems and achieve the object, the present invention provides a frame for a solar cell module attached around a solar cell panel, and a plurality of partial frames corresponding to each side of the solar cell panel are connected. A frame body, the frame body has a cutout portion cut out for bending at a boundary between the partial frames, and each of the plurality of partial frames is wound around the solar cell panel. It is attached to each corresponding side of the solar cell panel, and the partial frames are overlapped at the fastening portion of the frame and are in contact with each other.

  According to the present invention, since the number of fastening points between frames can be reduced to one, the number of fastening parts can be reduced and the cost can be reduced. Moreover, since the end surface of a solar cell panel including a fastening location can be covered completely, invasion of moisture can be reduced and moisture resistance can be improved.

FIG. 1 is a diagram showing a configuration of a first embodiment of a solar cell module according to the present invention. FIG. 2 is a diagram illustrating the configuration of the solar cell module frame according to the first embodiment. FIG. 3 is a cross-sectional view of the solar cell module frame. FIG. 4 is a partially enlarged view of the solar cell module frame. FIG. 5 is a diagram showing a procedure for attaching the solar cell module frame. FIG. 6 is a diagram showing another example of the procedure for attaching the solar cell module frame. FIG. 7 is a diagram showing a configuration of a second embodiment of a solar cell module frame according to the present invention.

  EMBODIMENT OF THE INVENTION Below, embodiment of the frame for solar cell modules and solar cell module concerning this invention is described in detail based on drawing. Note that the present invention is not limited to the embodiments.

Embodiment 1 FIG.
FIG. 1 is a diagram showing a configuration of a first embodiment of a solar cell module according to the present invention. FIG. 2 is a diagram illustrating the configuration of the solar cell module frame according to the first embodiment. The solar cell module 5 is configured by mounting a frame 1 forming a frame body around a solar cell panel 2. The frame 1 includes a short side frame 1a, a long side frame 1b, a short side frame 1c, a long side frame 1d, and a short side frame 1e forming a partial frame. The short side frames 1 a and 1 c have the same length as the short side of the solar cell panel 2, and the long side frame 1 b has the same length as the long side of the solar cell panel 2. On the other hand, the long side frame 1d is longer than the length of the long side of the solar cell panel 2 by the same amount as the thickness of the side plate 13 described later. The short side frame 1 e is shorter than the short side of the solar cell panel 2. Therefore, the total length of the frame 1 is longer than the length corresponding to the total length of the sides of the solar cell panel 2.

  The frame 1 has a structure in which a portion corresponding to each apex of the solar battery panel 2 (boundary of each of the short side frames 1a, 1c, 1e and the long side frames 1b, 1d) is cut out so as to be easily bent. ing. The notched portion is processed at an angle that reduces the distance between adjacent frames when bent. If the solar cell panel 2 is rectangular (the vertex angle is 90 °), it is preferable to cut out each of the short side frames 1a, 1c, 1e and the long side frames 1b, 1d by 45 °, but it can be easily bent. Any angle can be used as long as the object of achieving it can be achieved. For example, the cutout on the short side frame 1a side may be 60 °, and the cutout on the long side frame 1b side may be 30 °. In order to prevent interference between the short side frames 1a, 1c, 1e and the long side frames 1b, 1d, the notch angle on the short side frames 1a, 1c, 1e side and the notch on the long side frames 1b, 1d side The sum of the angles is equal to or greater than the vertex angle of the solar panel 2.

  FIG. 3 is a cross-sectional view of the solar cell module frame. The frame 1 includes a light receiving surface side holding plate 11, a non-light receiving surface side holding plate 12, and a side plate 13. The solar cell panel 2 is inserted between the light receiving surface side holding plate 11 and the non-light receiving surface side holding plate 12. The short side frame 1e is formed only of the side plate 13 without the light receiving surface side holding plate 11 and the non-light receiving surface side holding plate 12.

  FIG. 4 is a partially enlarged view of the solar cell module frame, and shows an A portion of FIG. 2 in an enlarged manner. The light receiving surface side holding plate 11 and the non-light receiving surface side holding plate 12 are provided with a first cutout surface 21 and a second cutout surface 22, so that adjacent partial frames (short side frame 1 a and long side A notch 23 is formed as a cut portion so as to straddle the side frame 1b). The first notch surface 21 and the second notch surface 22 intersect with each other on the inner side of the side plate 13 and the surface on the side where the solar cell panel 2 is inserted to form a bent portion 24 that has the thinnest width of the frame 1. doing. The width of the bent portion 24 is equal to the thickness of the side plate 13. The notches between the long side frame 1b and the short side frame 1c and between the short side frame 1c and the long side frame 1d have the same structure.

  A method for attaching the solar cell module frame will be described. FIG. 5 is a diagram showing a procedure for attaching the solar cell module frame. As shown to Fig.5 (a), a flame | frame is arrange | positioned at the short side of the solar cell panel 2, and the solar cell panel 2 is inserted in the short side frame 1a.

  Next, as shown in FIG. 5 (b), the long side frame 1b, the short side frame 1c, the long side frame 1d and the short side frame 1e are bent so as to be wound around the solar panel 2 around the notch 23. The solar cell panel 2 is inserted into the side frame 1b. At this time, it is preferable to bend the frame 1 so that the angle formed by the short side frame 1 a and the long side frame 1 b becomes the vertex angle of the solar cell panel 2.

  Next, as shown in FIG. 5C, the short-side frame 1c, the long-side frame 1d, and the short-side frame 1e are folded so as to be wound around the solar panel 2 around the notch 23, and the sun is applied to the short-side frame 1c. Insert the battery panel 2. At this time, it is preferable to bend the frame 1 so that the angle formed by the long side frame 1b and the short side frame 1c becomes the vertex angle of the solar cell panel 2.

  Finally, as shown in FIG. 5D, the long-side frame 1d and the short-side frame 1e are bent so as to be wound around the solar panel 2 around the notch 23, and the solar cell panel 2 is inserted into the long-side frame 1d. To do. At this time, it is preferable to bend the frame 1 so that the angle formed by the short side frame 1c and the long side frame 1d becomes the vertex angle of the solar cell panel 2. Further, the short side frame 1e is bent and the short side frame 1e is overlapped with the short side frame 1a. After that, the short side frame 1a and the short side frame 1e are fastened with the fastening parts 3, and the frame 1 is attached to the solar cell panel 2. Is completed, and the solar cell module 5 is obtained.

  In the above description, the attachment is started from the short side frame 1a, but the attachment may be started from the long side frame 1d.

  FIG. 6 is a diagram showing another example of the procedure for attaching the solar cell module frame. The attachment of the frame 1 to the solar cell panel 2 does not have to start from the short side frame 1a or the long side frame 1d located at the end, but the long side frame 1b or the short side frame 1c located at the intermediate part. Installation can also be started from. By starting attachment from the long side frame 1b or the short side frame 1c located in the intermediate portion, the space required for the attachment operation can be reduced.

  As in the present embodiment, a solar cell module frame that is longer than the sum of the lengths of the sides of the solar cell panel and that is easily cut off at a position corresponding to each vertex of the solar cell panel By attaching to each side, the contact between the end face of the solar cell panel and the outside air can be minimized, the moisture resistance can be improved, and the life of the solar cell module can be extended. In addition, since there is one fastening portion, the number of parts of the connection parts can be reduced, and cost reduction can be achieved.

  In the present embodiment, the end face of the solar cell panel is completely covered by the frame, and since the outside air needs to enter through the overlapping surface of the frame, the intrusion path becomes longer and the intrusion resistance increases. Intrusion of outside air can be minimized.

  In addition, as long as the thickness of the frame 1 is small and can be easily bent to the vertex angle of the solar cell panel 2, the cutout may not be provided. For example, the width of one of the light receiving surface side holding plate 11 and the non-light receiving surface side holding plate 12 is extremely small, and when the frame 1 is bent, interference between the short side frames 1a and 1c and the long side frames 1b and 1d does not occur. If it is, it can also be set as the structure without a notch.

Embodiment 2. FIG.
FIG. 7 is a diagram showing a configuration of a second embodiment of a solar cell module frame according to the present invention. The light receiving surface side holding plate 11 and the non-light receiving surface side holding plate 12 are provided with a first notch surface 31 and a second notch surface 32 to form a notch 33. The first notch surface 31 and the second notch surface 32 intersect with each other at an intermediate position of the thickness of the side plate 13 to form a bent portion 34 having the thinnest width of the frame 1. That is, when the notch 33 reaches the side plate 13, a groove 35 is formed in the side plate 13. The width of the bent portion 34 (the thickness of the side plate 13 at the groove 35) is thinner than the thickness of the side plate 13 at the portion other than the groove 35.

  Even if the frame 1 for solar cell modules according to the second embodiment is a frame 1 having a thick side plate 13, it is easy to bend at the folding portion 34, and thus can be easily attached to the solar cell panel 2.

  As described above, the solar cell module frame and the solar cell module according to the present invention are useful in that they can prevent intrusion of moisture or the like that deteriorates the solar cells, and in particular, to solar cell modules installed outdoors. Suitable for application.

  1 frame, 1a, 1c, 1e short side frame, 1b, 1d long side frame, 2 solar cell panel, 3 fastening parts, 5 solar cell module, 11 light receiving surface side holding plate, 12 non-light receiving surface side holding plate, 13 side plate 21, 31 1st notch surface, 22, 32 2nd notch surface, 23, 33 Notch, 24, 34 Bending part, 35 Groove.

Claims (5)

A frame for a solar cell module attached around a solar cell panel,
A frame body including a plurality of partial frames corresponding to each side of the solar cell panel;
The frame body has a cut-out part cut out for bending at the boundary between the partial frames,
Each of the plurality of partial frames is attached to each corresponding side of the solar cell panel so that the frame main body is wound around the solar cell panel, and the partial frames overlap each other at a fastening portion of the frame. A frame for a solar cell module, characterized by contacting with   2. The solar cell module frame according to claim 1, wherein the cut portion is formed by a notch having an angle equal to or greater than an apex angle of the solar cell panel. The frame body includes a side plate, a light receiving surface side holding plate extending from one side end of the side plate, and a non-light receiving surface side holding plate extending from the other side end of the side plate. Cross section
The solar cell module frame according to claim 1 or 2, wherein the cut portion is formed by cutting out the light receiving surface side holding plate and the non-light receiving surface side holding plate.   The solar cell module frame according to claim 3, wherein the cut portion reaches the side plate and forms a groove in the side plate. The solar cell panel;
The solar cell module frame according to any one of claims 1 to 4,
A solar cell module comprising: a fastening component that fastens the partial frames at both ends of the solar cell module frame.

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