WO2018061704A1

WO2018061704A1 - Photovoltaic module, frames

Info

Publication number: WO2018061704A1
Application number: PCT/JP2017/032348
Authority: WO
Inventors: 淳赤司
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2016-09-30
Filing date: 2017-09-07
Publication date: 2018-04-05
Also published as: CN109792229B; JP6712815B2; JPWO2018061704A1; CN109792229A

Abstract

A photovoltaic module 100 has a solar panel 110, and a first long frame 12a and a second long frame 12b that are disposed respectively at outer edge portions 116 of the solar panel 110. The outer edge portions 116 of the solar panel 110 are fitted into fitting portions 20 in the first long frame 12a and the second long frame 12b. Support portions 22 support the fitting portions 20 from below. The fitting portions 20 each have a tapered shape expanding toward an opening 44 into which each of the outer edge portions 116 of the solar panel 110 is inserted.

Description

Solar cell module, frame

The present invention relates to a solar cell module and a frame to which the frame is attached.

The solar cell module has a module body including a solar cell and a metal frame. The frame includes a support portion and a main body portion, and the module main body is fitted into the opening of the support portion (see, for example, Patent Document 1).

JP 2014-70355 A

In the frame, when the width of the portion into which the solar cell panel as the module body is fitted is sufficiently wider than the thickness of the solar cell panel, the solar cell panel moves in the fitted portion. For this reason, the solar cell panel is not sufficiently fixed. In order to stabilize the fixing of the solar cell panel, it is preferable that the width of the portion into which the solar cell panel is fitted is slightly wider than the thickness of the solar cell panel. However, in such a case, it is difficult to fit the solar cell panel into the frame.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a technique for facilitating fitting of a solar cell panel.

In order to solve the above-described problems, a solar cell module according to an aspect of the present invention includes a solar cell panel and a plurality of frames disposed on an outer edge portion of the solar cell panel. Each of the plurality of frames includes a fitting portion into which the outer edge portion of the solar cell panel is fitted, and a support portion that supports the fitting portion from below. The fitting portion has a tapered shape that widens toward an opening into which the outer edge portion of the solar cell panel is inserted.

Another aspect of the present invention is a frame. The frame includes a fitting portion into which an outer edge portion of the solar cell panel is fitted, and a support portion that supports the fitting portion from below. The fitting portion has a tapered shape that widens toward an opening into which the outer edge portion of the solar cell panel is inserted.

According to the present invention, the solar cell panel can be easily fitted.

It is a top view which shows the structure of the solar cell module which concerns on the Example of this invention. It is sectional drawing which shows the structure of the solar cell module of FIG. It is an expanded sectional view which shows the structure of the 1st long frame of FIG.

An outline will be given before concretely explaining the present invention. The Example of this invention is related with the solar cell module which attached the some flame | frame so that the outer edge part of a solar cell panel might be enclosed. The frame is provided with a fitting portion for fitting the outer edge portion of the solar cell panel, and the outer edge portion of the solar cell panel is fitted from the opening of the fitting portion. When the width of the fitting portion is sufficiently larger than the thickness of the solar cell panel, the degree of freedom of movement of the solar cell panel is generated in the fitting portion, so that the solar cell panel is not sufficiently fixed by the frame. When the width of the fitting portion is slightly larger than the thickness of the solar cell panel, the solar cell panel becomes difficult to move in the fitting portion, and thus the solar cell panel is sufficiently fixed by the frame. However, it becomes difficult to fit the outer edge portion of the solar cell panel into the fitting portion, and the productivity of the solar cell module is lowered.

In order to make it easy to fit the outer edge portion of the solar cell panel while fixing the solar cell panel sufficiently, the frame according to the present embodiment is, while the width of the fitting portion is slightly larger than the thickness of the solar cell panel, It has a tapered shape that widens toward the opening into which the outer edge of the solar cell panel is fitted. In the following description, “parallel” and “vertical” include not only perfect parallel and vertical, but also include cases in which they deviate from parallel and vertical within an error range. Further, “substantially” means that they are the same in an approximate range.

FIG. 1 is a plan view showing a configuration of a solar cell module 100 according to an embodiment of the present invention. The solar cell module 100 includes a first short frame 10a, a second short frame 10b, which are collectively referred to as a short frame 10, a first long frame 12a, a second long frame 12b, which are collectively referred to as a long frame 12, and a solar cell panel 110. .

As shown in FIG. 1, an orthogonal coordinate system consisting of an x-axis, a y-axis, and a z-axis is defined. The x axis and the y axis are orthogonal to each other in the plane of the solar cell panel 110. The z axis is perpendicular to the x axis and the y axis and extends in the thickness direction of the solar cell panel 110. Further, the positive directions of the x-axis, y-axis, and z-axis are each defined in the direction of the arrow in FIG. 1, and the negative direction is defined in the direction opposite to the arrow. Of the two main surfaces forming the solar cell panel 110 and parallel to the xy plane, the main plane disposed on the positive side of the z axis is the light receiving surface 112, and z A main plane disposed on the negative direction side of the shaft is the back surface 114. Hereinafter, the positive direction side of the z axis is referred to as “light receiving surface 112 side” and “upward”, and the negative direction side of the z axis is referred to as “back surface 114 side” and “downward”.

The solar battery panel 110 has a rectangular shape that is longer in the x-axis direction than in the y-axis direction, while including the light receiving surface 112 and the back surface 114 that are opposite to each other in the z-axis direction. A translucent substrate is disposed on the light receiving surface 112 side of the solar cell panel 110, and a back sheet as a back surface protection member is disposed on the back surface 114 side. Moreover, the sealing member is arrange | positioned between the translucent board | substrate and the back sheet | seat, and the several photovoltaic cell is sealed with the sealing member. For example, a glass substrate, a translucent plastic, etc. are used for a translucent substrate, a back film is a resin film such as PET (polyethylene terephthalate), and a laminated film having a structure in which an Al foil is sandwiched between resin films. Is used. For the sealing member, a thermoplastic resin such as a resin film such as polyolefin, EVA (ethylene vinyl acetate), PVB (polyvinyl butyral), or polyimide is used.

The short frames 10 extending in the y-axis direction are arranged at both ends in the x-axis direction of the solar cell panel 110, and the long frames 12 extending in the x-axis direction are arranged at both ends in the y-axis direction of the solar cell panel 110. . The adjacent short frame 10 and the long frame 12 are connected to each other, so that the two short frames 10 and the two long frames 12 are arranged in a frame shape so as to surround the outer edge portion of the solar cell panel 110. It should be noted that a connecting member such as an L-shaped corner piece is used for connecting the adjacent short frame 10 and the long frame 12, but any known technique may be used for the connecting member. Description is omitted. Since the short frame 10 and the long frame 12 are formed by extrusion molding, they have a cross section having the same shape in a direction crossing the extending direction. Further, the short frame 10 and the long frame 12 are made of, for example, aluminum or an aluminum alloy in order to protect the solar cell panel 110.

A terminal box (not shown) is attached to the back surface 114 of the solar cell panel 110. In addition, one end side of each of the two cables is connected to the terminal box, and a connector is connected to the other end side of each of the two cables. The terminal box, cable, and connector are electrically connected to the solar cell panel 110 and take out electric power from the solar cell panel 110. Although the solar cell module 100 is formed by attaching the short frame 10, the long frame 12, the terminal box, the cable, and the connector to the solar cell panel 110, description of the terminal box, the cable, and the connector is omitted below.

FIG. 2 is a cross-sectional view of the solar cell module 100 in FIG. 1, taken along the y-axis, specifically the A-A ′ line. The solar cell panel 110 has a shape that is longer in the y-axis direction than the z-axis direction, and is arranged with the light receiving surface 112 facing the positive direction side of the z-axis and the back surface 114 facing the negative direction side of the z-axis. Each of the positive end on the y axis side and the negative end on the y axis side of the solar cell panel 110 corresponds to the outer edge portion 116 described above.

The first long frame 12a and the second long frame 12b are bilaterally symmetric but are configured in the same manner, and thus will be described below based on the first long frame 12a. Note that the short frame 10 (not shown) may be configured similarly to the long frame 12. The long frame 12 that collectively refers to the first long frame 12a and the second long frame 12b includes a fitting portion 20, a support portion 22, and a bottom portion 26. The fitting portion 20 includes a collar portion 40, a wall portion 42, and a lower surface portion 46. The support portion 22 includes a top surface portion 28 and a hollow portion 30. Here, the fitting part 20, the support part 22, and the bottom part 26 are integrally formed.

The fitting part 20 is arrange | positioned at the positive direction side of the z-axis of the support part 22 mentioned later. A wall 42 is erected in the positive direction of the z-axis from the negative end of the y-axis of the top surface 28 of the support portion 22 and from the positive end of the z-axis of the wall 42 in the positive direction of the y-axis. The collar portion 40 extends toward the top surface portion 28 from above. Here, the surface of the collar portion 40 that faces the top surface portion 28 is the lower surface portion 46. The lower surface portion 46 includes a surface substantially parallel to the top surface portion 28 and a slope. The fitting portion 20 has a groove structure formed by a combination of the top surface portion 28, the wall portion 42, and the lower surface portion 46. The fitting portion 20 has an opening 44 on the positive direction side of the y-axis and a cross section that is recessed toward the negative direction of the y-axis. With such a shape, the outer edge 116 of the solar cell panel 110 is fitted into the fitting portion 20 from the opening 44 side. In addition, the fitting part 20 and the solar cell panel 110 are fixed by a butyl sealant or a silicone adhesive.

The support part 22 supports the fitting part 20 from below, that is, from the negative direction side of the z-axis. On the positive direction side of the support unit 22 in the z-axis direction, the top surface portion 28 is disposed so as to face the lower surface portion 46. The support portion 22 has a substantially rectangular cross section, and the hollow portion 30 is provided by a hollow structure. One piece of the connecting member having an L shape is inserted into the hollow portion 30. The remaining piece of the connecting member is inserted into the hollow portion 30 of the short frame 10 adjacent to the first long frame 12a. The bottom portion 26 protrudes in the positive direction of the y axis from the negative direction side of the z axis of the support portion 22 and from the positive direction side of the y axis, and has a plate shape. The bottom portion 26 may be omitted.

With such a structure, the first long frame 12a and the second long frame 12b make the opening 44 of the fitting portion 20 face each other in the y-axis direction. By inserting the solar cell panel 110 from these openings 44, the fitting portion 20 of the first long frame 12a and the fitting portion 20 of the second long frame 12b are connected to the outer edge portions 116 at both ends of the solar cell panel 110. Mating.

FIG. 3 is used to describe the structure of the fitting portion 20 for fitting the solar cell panel 110 in more detail. FIG. 3 is an enlarged cross-sectional view showing the configuration of the first long frame 12a. This is shown as in FIG. As described above, in order to stably fix the solar cell panel 110 by the fitting portion 20, the width “b” of the fitting portion 20 in the z-axis direction is slightly smaller than the thickness “a” of the solar cell panel 110. Widened. In that case, it becomes difficult to insert the solar cell panel 110 into the fitting portion 20.

Under such circumstances, in order to facilitate the insertion of the solar cell panel 110 into the fitting portion 20, the fitting portion 20 is directed toward the opening 44 into which the outer edge portion 116 of the solar cell panel 110 is inserted. That is, it has a tapered shape that widens toward the positive side of the y-axis. More specifically, the top surface portion 28 of the support portion 22 is formed in a planar shape on the xy plane. On the other hand, the lower surface portion 46 of the collar portion 40 includes a sloped structure that rises toward the positive direction side of the z-axis toward the positive direction side of the y-axis. This inclined structure corresponds to a tapered shape. The width of the fitting portion 20 in the middle portion of the tapered shape is “c”, and the width “c” is sufficiently larger than the thickness “a”. In this manner, it becomes easy to insert the solar cell panel 110 into the fitting portion 20 from the opening 44. After the solar cell panel 110 is inserted, the outer edge portion 116 of the solar cell panel 110 is fitted between the top surface portion 28 and a portion substantially parallel to the top surface portion 28 of the lower surface portion 46 of the collar portion 40. .

As shown in FIG. 3, the length in the y-axis direction of the tapered shape of the lower surface portion 46 of the first long frame 12a is indicated as “L”. On the other hand, the length in which the lower surface portion 46 and the solar cell panel 110 overlap when the insertion of the solar cell panel 110 into the fitting portion 20 is the shallowest is indicated as “D”. In each member used for the solar cell module 100, in order to absorb the tolerance of the size of the translucent substrate, etc., four outer edge portions 116 surrounding the solar cell panel 110 from four sides, each short frame 10, each long frame A slight space is provided between the 12 wall portions 42. That is, the entire solar cell panel 110 may be shifted toward the first long frame 12a side or the second long frame 12b side, and the position of the outer edge portion 116 of the solar cell panel 110 in the y-axis direction is not necessarily constant. In the present embodiment, the case where the outer edge portion 116 of the solar cell panel 110 is inserted most shallowly with respect to the fitting portion 20 of the first long frame 12a means that the fitting portion 20 of the second long frame 12b in FIG. This is a case where the solar cell panel 110 is pushed in as much as possible. In this embodiment, since “D” is made larger than “L”, even when the insertion of the solar cell panel 110 into the fitting portion 20 is the shallowest, the solar cell module is in a portion other than the tapered shape. 100 is fitted. That is, even in such a case, the solar cell panel 110 is sufficiently fixed by the fitting portion 20.

Below, the manufacturing method of the solar cell module 100 is demonstrated. First, the short frame 10 and the long frame 12 are prepared so as to surround the outer edge portion 116 of the solar cell module 100. Subsequently, the outer edge portion 116 of the solar cell panel 110 is fitted to the fitting portion 20 of the short frame 10 and the long frame 12. At that time, the connecting member is inserted into the hollow portion 30 of the support portion 22 of the short frame 10 and the long frame 12.

According to the embodiment of the present invention, the fitting portion 20 has a tapered shape that widens toward the opening 44 into which the outer edge portion 116 of the solar cell panel 110 is inserted, so that the solar cell panel 110 can be easily fitted. Moreover, since the lower surface part 46 has a taper shape, the solar cell panel 110 can be easily fitted. Further, since the solar cell panel 110 can be easily fitted, the width of the fitting portion 20 and the thickness of the solar cell panel 110 can be made close to each other. Moreover, since the width | variety of the fitting part 20 and the thickness of the solar cell panel 110 become close, the solar cell panel 110 can be stably fixed by the fitting part 20. FIG. Further, the length “L” of the tapered shape of the lower surface portion 46 overlaps the lower surface portion 46 of the main frame and the solar cell panel 110 when the solar cell panel 110 is pushed into the fitting portion 20 of the opposite frame. Since it is shorter than the length “D”, the solar cell panel 110 can be stably fixed.

The outline of this example is as follows. The solar cell module 100 according to an aspect of the present invention includes a solar cell panel 110 and a plurality of long frames 12 arranged on the outer edge portion 116 of the solar cell panel 110. Each of the plurality of long frames 12 includes a fitting portion 20 into which the outer edge portion 116 of the solar cell panel 110 is fitted, and a support portion 22 that supports the fitting portion 20 from below. The fitting portion 20 has a tapered shape that widens toward the opening 44 into which the outer edge portion 116 of the solar cell panel 110 is inserted.

The fitting portion 20 is opposed to the top surface portion 28 of the support portion 22 and the top surface portion 28 from above, and the lower surface portion of the collar portion 40 sandwiching the outer edge portion 116 of the solar cell panel 110 between the top surface portion 28. 46 may be provided. The lower surface portion 46 may have a tapered shape.

Among the plurality of long frames 12, the first long frame 12 and the second long frame 12 open the fitting portion 20 while facing each other, and the fitting portion 20 of the first long frame 12 and the second long frame 12 The fitting portion 20 of the long frame 12 fits the outer edge portions 116 at both ends of the solar cell panel 110, and the length in the direction toward the tapered second long frame 12 in the lower surface portion 46 of the first long frame 12. That is, the length of the lower surface portion 46 of the first long frame 12 and the solar cell panel 110 overlapped when the solar cell panel 110 is pushed all the way into the fitting portion 20 of the second long frame 12. short.

Another aspect of the present invention is the long frame 12. The long frame 12 includes a fitting portion 20 into which the outer edge portion 116 of the solar cell panel 110 is fitted, and a support portion 22 that supports the fitting portion 20 from below. The fitting portion 20 has a tapered shape that widens toward the opening 44 into which the outer edge portion 116 of the solar cell panel 110 is inserted.

The present invention has been described based on the embodiments. This embodiment is an exemplification, and it will be understood by those skilled in the art that various modifications can be made to each of those constituent elements or combinations of processing processes, and such modifications are also within the scope of the present invention. .

In this embodiment, a tapered shape is formed on the lower surface portion 46 of the collar portion 40, and the top surface portion 28 is formed in a flat shape. However, the present invention is not limited to this. For example, the top surface portion 28 may be tapered, and the bottom surface 46 of the collar portion 40 may be formed in a flat shape. According to this modification, the degree of freedom of structure can be improved.

In the present embodiment, the top surface portion 28 of the support portion 22 is used as the fitting portion 20. However, the present invention is not limited to this, and for example, the fitting part 20 and the support part 22 may be arranged separately. According to this modification, the degree of freedom of structure can be improved.

10 short frame (frame), 12 long frame (frame), 20 fitting part, 22 support part, 26 bottom part, 28 top part, 30 hollow part, 40 brim part, 42 wall part, 44 opening, 46 bottom face part, 100 Solar cell module, 110 solar cell panel, 112 light receiving surface, 114 back surface, 116 outer edge.

According to the present invention, the solar cell panel can be easily fitted.

Claims

A solar panel,
A plurality of frames disposed on the outer edge of the solar cell panel,
Each of the plurality of frames is
A fitting portion into which an outer edge portion of the solar cell panel is fitted; and
A support portion that supports the fitting portion from below;
The said fitting part has a taper shape which spreads toward the opening in which the outer edge part of the said solar cell panel is inserted, The solar cell module characterized by the above-mentioned.
The fitting portion is
A top surface portion of the support portion;
A lower surface portion of a flange portion facing the top surface portion from above and sandwiching an outer edge portion of the solar cell panel between the top surface portion and
The solar cell module according to claim 1, wherein the lower surface portion has a tapered shape.
Among the plurality of frames, the first frame and the second frame open the fitting portion while facing each other,
The fitting portion of the first frame and the fitting portion of the second frame are fitted to outer edge portions at both ends of the solar cell panel,
The length of the lower surface portion of the first frame in the direction toward the tapered second frame is when the solar cell panel is pushed all the way into the fitting portion of the second frame. 3. The solar cell module according to claim 2, wherein the solar cell module is shorter than a length in which the lower surface portion of the first frame and the solar cell panel overlap each other.
A fitting portion to which the outer edge portion of the solar cell panel is fitted; and
A support portion that supports the fitting portion from below;
The frame, wherein the fitting portion has a tapered shape that widens toward an opening into which an outer edge portion of the solar cell panel is inserted.