JP6735472B2 - Solar cell module - Google Patents

Description

The present invention relates to a solar cell module, particularly relates to a solar cell module including a plurality of solar cells.

In the solar cell module, a plurality of solar cells are sealed with a transparent filler between the front cover member and the back cover member. The plurality of solar cells are arranged in a matrix, and two solar cells adjacent to each other in one direction are connected by an interconnector. A light reflection member is provided in the gap between the solar cells in order to effectively use the sunlight applied to the gap between the solar cells (see, for example, Patent Document 1).

JP, 2013-98496, A

In order to simplify the manufacturing of the solar cell module, a wire film in which two transparent members are connected by a plurality of wires may be used. When the wire film is used for the solar cell module, each of the two transparent members is attached to the adjacent solar cell, and the wire is used as the wiring material. Even if the light reflecting member is arranged between the strings formed by attaching the wire film, the sunlight applied to the gaps between the strings can be effectively used. However, the operation of arranging the light reflecting member after manufacturing the string complicates the manufacturing of the solar cell module.

The present invention has been made in view of these circumstances, and an object thereof is to provide a technique for improving the conversion efficiency of a solar cell module while suppressing the complexity of manufacturing the solar cell module.

In order to solve the above problems, a solar cell module according to an aspect of the present invention includes a plurality of solar cells arranged side by side in a first direction, a plurality of wiring members connecting the plurality of solar cells, and a plurality of wiring members. A plurality of first transparent members arranged on the first surface side of each of the solar cells and bonded to a plurality of wiring members, and a plurality of wirings arranged on the second surface side of each of the plurality of solar cells. A plurality of second transparent members adhered to the material, a first protective member provided on the first surface side of the first transparent member, and a first transparent member on the first surface side of the first transparent member. A first sealing member provided between the first transparent member and the second transparent member, a second transparent member provided on the second surface side of the second transparent member, and a second transparent member provided on the second surface side of the second transparent member. A second sealing member provided between the member and the second protection member . Of the plurality of first transparent members and the plurality of second transparent members, the first transparent member and the second transparent member facing each other sandwich one solar battery cell, and the plurality of first transparent members and the plurality of second transparent members. At least one of the members has a light-reflecting member arranged in a portion where the solar battery cells are not arranged, and the plurality of solar battery cells are arranged in a second direction intersecting with the first direction to form a plurality of first transparent members. At least one of the plurality of second transparent members has light reflecting members arranged on both sides in the second direction sandwiching the portion where the solar cells are arranged, and the first sealing member and the second sealing member are the first protective member. And the softening temperature is lower than that of the second protective member.

Another aspect of the present invention is also a solar cell module . This solar cell module includes a plurality of solar cells arranged side by side in a first direction, a plurality of wiring members connecting the plurality of solar cells, and a plurality of solar cells arranged on a first surface side of each of the plurality of solar cells. A plurality of first transparent members bonded to the plurality of wiring members, and a plurality of second transparent members arranged on the second surface side of each of the plurality of solar cells and bonded to the plurality of wiring members; A first protection member provided on the first surface side of the first transparent member, and a first sealing provided on the first surface side of the first transparent member between the first transparent member and the first protection member. A member, a second protective member provided on the second surface side of the second transparent member, and a second surface provided on the second surface side of the second transparent member between the second transparent member and the second protective member. 2 sealing members. Of the plurality of first transparent members and the plurality of second transparent members, the first transparent member and the second transparent member facing each other sandwich one solar battery cell, and the plurality of first transparent members and the plurality of second transparent members. At least one of the members has a light-reflecting member arranged in a portion where the solar battery cells are not arranged, and the plurality of solar battery cells are arranged in a second direction intersecting with the first direction to form a plurality of first transparent members. At least one of the plurality of second transparent members has the light reflecting member arranged on one side in the second direction with respect to the portion where the solar battery cells are arranged, and the first sealing member and the second sealing member have the first protection. The softening temperature is lower than that of the member and the second protection member.

According to the present invention, it is possible to improve the conversion efficiency of the solar cell module while suppressing the complexity of manufacturing the solar cell module.

It is a top view which shows the structure of the solar cell module which concerns on Example 1 of this invention. It is sectional drawing which shows the structure of the solar cell module of FIG. It is a perspective view of the resin sheet used in the solar cell module of FIG. It is another sectional view which shows the structure of the solar cell module of FIG. It is sectional drawing which shows the structure of the 2nd transparent member of FIG. It is sectional drawing which shows another structure of the 1st transparent member of FIG. It is a perspective view of the resin sheet used in the solar cell module concerning Example 2 of the present invention. It is sectional drawing which shows the structure of the solar cell module which concerns on Example 2 of this invention. 9A and 9B are cross-sectional views showing the configuration of the second transparent member of FIG. It is sectional drawing which shows another structure of the 1st transparent member of FIG. It is sectional drawing which shows the structure of the solar cell module which concerns on Example 3 of this invention. It is a perspective view of the resin sheet used in the solar cell module of FIG. It is sectional drawing which shows another structure of the 1st transparent member of FIG.

(Example 1)
Before specifically explaining the present invention, an outline will be given. Example 1 of the present invention relates to a solar cell module in which a plurality of solar cells are arranged in a matrix. In the solar cell module, the sealing member is arranged between the first protection member and the second protection member, and the plurality of solar battery cells are sealed by the sealing member. At that time, two adjacent solar cells are connected by a wire film. As described above, in the wire film, two transparent members are connected by a plurality of wires, and each transparent member is attached to the solar battery cell. Since the wire serves as a wiring material, the string is formed by connecting the plurality of solar cells arranged in the extending direction of the wire with the plurality of wire films. Of the sunlight incident from the first protection member, the components that pass through between the strings do not reach the solar cells and therefore do not contribute to power generation. In order to improve the conversion efficiency of a solar cell module, it is desired to make such a component reach a solar cell. Therefore, by disposing a light reflecting member between the strings, the sunlight passing through between the strings is reflected by the light reflecting member to reach the solar battery cell.

Wire films are used to simplify the manufacture of solar cell modules. However, the manufacturing of the solar cell module is complicated by adding the steps of manufacturing a plurality of strings and then arranging them and then disposing the light reflecting member between them. In order to improve the conversion efficiency of the solar cell module while suppressing the complexity of manufacturing the solar cell module, in this embodiment, the size of one transparent member of the wire film is adjusted to the size of the solar cell. However, the size of the other transparent member is made larger than the size of the solar battery cell. Further, a light reflecting member is arranged in a portion of the other transparent member where the solar cell is not attached. That is, a wire film in which the light reflecting member is previously arranged is used. In the following description, “parallel” and “vertical” include not only perfect parallel and vertical, but also cases where parallel and vertical deviate from each other within an error range. Further, "substantially" means that they are the same within a rough range.

1 is a plan view showing a structure of a solar cell module 100 according to a first embodiment of the present invention. As shown in FIG. 1, a Cartesian coordinate system including an x axis, ay axis, and az axis is defined. The x axis and the y axis are orthogonal to each other in the plane of the solar cell module 100. The z-axis is perpendicular to the x-axis and the y-axis and extends in the thickness direction of solar cell module 100. Further, the positive directions of the x-axis, the y-axis, and the z-axis are defined in the directions of the arrows in FIG. 1, and the negative directions are defined in the direction opposite to the arrows. Of the two main surfaces forming the solar cell module 100 and parallel to the xy plane, the main plane arranged on the positive side of the z axis is the light receiving surface, and the z axis The main plane arranged on the negative direction side of is the back surface. Below, the positive direction side of the z-axis is called the “light-receiving surface side”, and the negative direction side of the z-axis is called the “back surface side”. Therefore, it can be said that FIG. 1 is a plan view from the light-receiving surface side of the solar cell module 100.

The solar cell module 100 includes an eleventh solar cell 10aa,..., A 46th solar cell 10df, a first type wiring member 14, a second type wiring member 16, and a third type wiring, which are collectively referred to as a solar cell 10. The material 18 includes a first frame 20a, a second frame 20b, a third frame 20c, and a fourth frame 20d, which are collectively referred to as a frame 20.

The first frame 20a extends in the x-axis direction, and the second frame 20b extends in the y-axis negative direction from the x-axis positive direction side end of the first frame 20a. The third frame 20c extends in the negative x-axis direction from the y-axis negative direction end of the second frame 20b, and the fourth frame 20d extends to the x-axis negative direction end of the third frame 20c. It connects to the negative side end of the frame 20a on the x-axis. The frame 20 surrounds the outer periphery of the solar cell module 100 and is made of a metal such as aluminum. Here, since the first frame 20a and the third frame 20c are longer than the second frame 20b and the fourth frame 20d, the solar cell module 100 has a rectangular shape that is longer in the x-axis direction than in the y-axis direction.

Each of the plurality of solar battery cells 10 absorbs incident light and generates a photovoltaic force. In particular, the solar battery cell 10 generates electromotive force from the light absorbed on the light receiving surface and also generates photoelectromotive force from the light absorbed on the back surface. The solar cell 10 is formed of a semiconductor material such as crystalline silicon, gallium arsenide (GaAs), or indium phosphide (InP). The structure of the solar battery cell 10 is not particularly limited, but here, as an example, it is assumed that crystalline silicon and amorphous silicon are laminated. Further, the solar battery cell 10 has a quadrangular shape in the xy plane, but may have another shape, for example, an octagonal shape. Although omitted in FIG. 1, a plurality of finger electrodes extending in the y-axis direction are provided in parallel with each other on the light receiving surface and the back surface of each solar cell 10.

The plurality of solar cells 10 are arranged in a matrix on the xy plane. Here, six solar cells 10 are arranged in the x-axis direction. The six solar cells 10 arranged side by side in the x-axis direction are connected in series by the first type wiring member 14 to form one string 12. For example, the 11th solar cell 10aa, the 12th solar cell 10ab,..., The 16th solar cell 10af are connected, and the 1st string 12a is formed. The second string 12b to the fourth string 12d are also formed in the same manner. As a result, the four strings 12 are arranged in parallel in the y-axis direction. As described above, the number of solar battery cells 10 arranged in the x-axis direction is larger than the number of solar battery cells 10 arranged in the y-axis direction. When the x-axis direction is called the "first direction", the y-axis direction is called the "second direction". The number of solar cells 10 included in the string 12 is not limited to “6”, and the number of strings 12 is not limited to “4”.

In order to form the string 12, the first-type wiring member 14 connects the finger electrodes on one light-receiving surface side of the solar cells 10 adjacent to each other in the x-axis direction and the finger electrodes on the other rear surface side. .. For example, the five first type wiring members 14 for connecting the adjacent eleventh solar cell 10aa and twelfth solar cell 10ab are the finger electrodes on the back surface side of the eleventh solar cell 10aa and the twelfth solar cell. The finger electrodes on the light-receiving surface side of the cell 10ab are electrically connected. The number of the first type wiring members 14 is not limited to “5”. The first type wiring member 14 corresponds to the wire described above. The connection between the first type wiring member 14 and the solar cell 10 will be described later. In FIG. 1, the detailed structure of the resin sheet 80 (the first transparent member 40, the second transparent member 42, the light reflecting member 50, etc.) that constitutes the first type wiring member 14 is omitted.

The second type wiring member 16 extends in the y-axis direction and electrically connects the two strings 12 adjacent to each other. For example, the sixteenth solar cell 10af located at the end of the first string 12a in the positive x-axis direction and the second solar cell 10bf located at the end of the second string 12b in the positive x-axis direction are the second It is electrically connected by the seed wiring member 16. Further, the second string 12b and the third string 12c are electrically connected by the second type wiring member 16 on the negative side of the x-axis, and the third string 12c and the fourth string 12d are positive on the x-axis. On the direction side, they are electrically connected by the second type wiring member 16. As a result, the plurality of strings 12 are connected in series by the second type wiring member 16. The width of the second type wiring material 16 in the x-axis direction is preferably larger than the width of the first type wiring material 14 in the y-axis direction.

The second type wiring member 16 is not connected to the eleventh solar battery cell 10aa at the end of the first string 12a on the negative side in the x-axis direction, but the third type wiring member 18 is connected instead. A take-out wiring member (not shown) is connected to the third type wiring member 18. The extraction wiring member is a wiring member for extracting the electric power generated in the plurality of solar battery cells 10 to the outside of the solar battery module 100. The third-type wiring member 18 is also connected to the 41st solar cell 10da at the end of the fourth string 12d on the negative side in the x-axis direction. The width of the third type wiring material 18 in the x-axis direction is preferably wider than the width of the first type wiring material 14 in the y-axis direction, and is the same as the width of the second type wiring material 16 in the y-axis direction. It is preferable to use a grade.

2 is a cross-sectional view showing the structure of the solar cell module 100 along the x-axis, and is a cross-sectional view taken along the line A-A′ of FIG. 1. The solar battery module 100 includes a twelfth solar battery cell 10ab, a thirteenth solar battery cell 10ac, a first type wiring member 14, a first protective member 30, a first sealing member 32, a second sealing member 34, and a second protective member. The member 36, the first transparent member 40, the second transparent member 42, the first adhesive 44, and the second adhesive 46 are included. The upper side of FIG. 2 corresponds to the light receiving surface side, and the lower side corresponds to the back surface side.

The first protection member 30 is arranged on the light receiving surface side of the solar cell module 100 and protects the surface of the solar cell module 100. Moreover, the solar cell module 100 has a rectangular shape surrounded by the frame 20 in the xy plane. The first protective member 30 is made of glass having a light-transmitting property and a water-blocking property, a light-transmitting plastic, or the like. The mechanical strength of the solar cell module 100 is increased by the first protection member 30.

The first sealing member 32 is laminated on the back surface side of the first protection member 30. The 1st sealing member 32 is arrange|positioned between the 1st protection member 30 and the photovoltaic cell 10, and adheres these. As the first sealing member 32, for example, a resin film such as polyolefin, EVA (ethylene vinyl acetate copolymer), PVB (polyvinyl butyral), polyimide, etc., rather than the first protective member 30 and the second protective member 36. A thermoplastic resin having a low softening temperature is used. A thermosetting resin may be used. The first sealing member 32 is formed of a sheet material having a light-transmitting property and having a surface having substantially the same dimensions as the xy plane of the first protection member 30.

The twelfth solar battery cell 10ab and the thirteenth solar battery cell 10ac are stacked on the back surface side of the first protection member 30. Each solar battery cell 10 is arranged with the light receiving surface 22 facing the positive side of the z axis and the back surface 24 facing the negative side of the z axis. When the light receiving surface 22 is called the "first surface", the back surface 24 is called the "second surface". The first-type wiring member 14, the first adhesive 44, and the first transparent member 40 are arranged on the light-receiving surface 22 of the solar battery cell 10, and the first-type wiring member 14, the first transparent member 40, and the first-type wiring member 14, on the back surface 24 of the solar battery cell 10. The second adhesive 46 and the second transparent member 42 are arranged. Here, FIG. 3 is used to describe these arrangements with respect to the solar cell 10.

FIG. 3 is a perspective view of the resin sheet 80 used in the solar cell module 100. The resin sheet 80 is a first light reflecting member 50 a, which is generically referred to as a first type wiring member 14, a first transparent member 40, a second transparent member 42, a first adhesive 44, a second adhesive 46, and a light reflecting member 50. , And a second light reflecting member 50b. The resin sheet 80 corresponds to the wire film described above.

The 1st transparent member 40 is arrange|positioned at the light-receiving surface 22 side of one of the adjacent two photovoltaic cells 10, for example, the 13th photovoltaic cell 10ac. The first transparent member 40 is made of, for example, a transparent resin film having a higher softening temperature than the first sealing member 32 and the second sealing member 34 such as PET (polyethylene terephthalate). The first transparent member 40 has a quadrangular shape having the same size as the solar cell 10 on the xy plane. A first adhesive 44 is arranged on the surface of the first transparent member 40 on the side of the thirteenth solar cell 10ac, and a plurality of first type wiring members 14 are arranged on the first adhesive 44. And a plurality of the first type wiring members 14 are bonded. The first adhesive 44 can adhere the light receiving surface 22 of the thirteenth solar cell 10ac to the first transparent member 40. For the first adhesive 44, for example, EVA is used.

The second transparent member 42 is arranged on the other side of the two adjacent solar cells 10, for example, on the back surface 24 side of the twelfth solar cell 10ab. Like the first transparent member 40, the second transparent member 42 is made of, for example, a transparent resin film such as PET. The second transparent member 42 has a rectangular shape in the xy plane, and its size is larger than that of the solar cell 10. That is, the size of the first transparent member 40 is smaller than the size of the second transparent member 42. The length of the second transparent member 42 in the x-axis direction is equal to the length of the solar cell 10 in the x-axis direction, but the length of the second transparent member 42 in the y-axis direction is y of the solar cell 10. Longer than the axial length. The first region 52 is arranged in the central portion of the second transparent member 42 in the y-axis direction. The first region 52 is a portion where the solar battery cell 10 is to be arranged, and has a rectangular shape having the same size as the solar battery cell 10 in the xy plane. In the second transparent member 42, the second regions 54 are arranged on both sides of the first region 52 in the y-axis direction. The 2nd field 54 is a portion where solar cell 10 is not arranged.

Further, the second adhesive 46 is disposed on the surface of the second transparent member 42 on the twelfth solar cell 10ab side. The first type wiring member 14 is arranged on the second adhesive 46 in the first region 52, and the second transparent member 42 and the plurality of first type wiring members 14 are bonded to each other. With this arrangement, the plurality of first-type wiring members 14 connect the first transparent member 40 and the second transparent member 42. The second adhesive 46 in the first region 52 can bond the back surface 24 of the twelfth solar cell 10ab to the second transparent member 42. On the other hand, the second adhesive 46 in the second region 54 attaches the first light reflecting member 50 a and the second light reflecting member 50 b to the second transparent member 42. The configurations of the first light reflecting member 50a and the second light reflecting member 50b will be described later. EVA is also used for the second adhesive 46, for example.

The resin sheet 80 thus configured is manufactured in advance separately from the manufacturing of the solar cell module 100. When manufacturing the solar cell module 100, the first adhesive 44 is adhered to the light receiving surface 22 of the thirteenth solar cell 10ac, and the second adhesive 46 in the first region 52 is applied to the back surface 24 of the twelfth solar cell 10ab. To be glued. By such adhesion, the first type wiring member 14 causes the finger electrodes (not shown) on the light receiving surface 22 of the thirteenth solar cell 10ac and the finger electrodes (not shown) on the back surface 24 of the twelfth solar cell 10ab. ) And are electrically connected. Returning to FIG.

By bonding the first transparent member 40 and the second transparent member 42 to the other solar battery cells 10 as well, the string 12 as shown in FIG. 1 is formed. The second sealing member 34 is laminated on the back surface side of the first sealing member 32. The second sealing member 34 is provided between the first sealing member 32 and the plurality of solar cells 10, the first type wiring member 14, the second type wiring member 16, the third type wiring member 18, and the first transparent member. The member 40, the second transparent member 42, etc. are sealed. As the second sealing member 34, the same one as the first sealing member 32 can be used. The second sealing member 34 may be integrated with the first sealing member 32 by heating in the laminating/curing process.

The second protection member 36 is laminated on the back surface side of the second sealing member 34 so as to face the first protection member 30. The second protection member 36 protects the back surface side of the solar cell module 100 as a back sheet. As the second protective member 36, a resin film such as PET or PTFE (polytetrafluoroethylene), a laminated film having a structure in which an Al foil is sandwiched between resin films such as polyolefin is used.

FIG. 4 is another cross-sectional view showing the structure of the solar cell module 100. This is a cross-sectional view of the solar cell module 100 along the y-axis, and is a cross-sectional view taken along the line B-B′ of FIG. The first transparent member 40 is arranged on the light receiving surface 22 side of each solar cell 10, and the second transparent member 42 is arranged on the back surface 24 side of each solar cell 10. That is, the first transparent member 40 and the second transparent member 42 facing each other sandwich one solar battery cell 10. Here, the first adhesive 44 and the first type wiring member 14 are arranged on the surface of the first transparent member 40 on the solar cell 10 side, and the solar cell 10 side of the second transparent member 42 is arranged. The second adhesive 46 and the first-type wiring material 14 are arranged on the surface.

In each solar cell 10, the second transparent member 42 and the second adhesive 46 project from the solar cell 10 in the positive and negative directions of the y-axis. The first light reflecting member 50a is disposed on the positive side of the z-axis of the second adhesive 46 at the portion protruding toward the positive side of the y-axis. On the other hand, the second light reflecting member 50b is arranged on the positive side of the z-axis of the second adhesive 46 in the portion protruding toward the negative side of the y-axis. That is, the first light reflecting member 50a and the second light reflecting member 50b are arranged on both sides of the second transparent member 42 in the y-axis direction sandwiching the portion where the solar cell 10 is arranged. The first light reflecting member 50a and the second light reflecting member 50b are arranged such that the 12th solar battery cell 10ab, the 22nd solar battery cell 10bb, the 32nd solar battery cell 10cb, and the 42nd solar battery are arranged in the y-axis direction. This is done for each of the battery cells 10db.

Therefore, the 1st light reflection member 50a and the 2nd light reflection member 50b project so that it may stick out to the space|interval between two adjacent photovoltaic cells 10, for example, the 12th photovoltaic cell 10ab and the 22nd photovoltaic cell 10bb. It is placed in a proper position. Specifically, the second light reflecting member 50b arranged on the negative side of the y-axis of the twelfth solar cell 10ab and the first light arranged on the positive side of the y-axis of the twenty-second solar cell 10bb. The reflecting member 50a is arranged between the twelfth solar battery cell 10ab and the twenty-second solar battery cell 10bb. Further, as shown in FIG. 1, the twelfth solar battery cell 10ab is included in the first string 12a extending in the x-axis direction, and the twenty-second solar battery cell 10bb is included in the second string 12b extending in the x-axis direction. Further, as shown in FIG. 3, the first light reflecting member 50a and the second light reflecting member 50b extend also in the x-axis direction. Therefore, it can be said that the 1st light reflection member 50a and the 2nd light reflection member 50b are arrange|positioned in the position which projects in the clearance gap between two adjacent strings 12.

Here, the 1st light reflection member 50a and the 2nd light reflection member 50b which oppose are arrange|positioned so that an end side surface may mutually contact so that a gap may be covered without mutually overlapping. However, the first light-reflecting member 50a and the second light-reflecting member 50b which face each other may be arranged such that a part thereof overlaps. In that case, the tip portion of the first light reflecting member 50a and the tip portion of the second light reflecting member 50b overlap in the z-axis direction. The configurations of the first light reflecting member 50a and the second light reflecting member 50b will be described below with reference to FIG.

FIG. 5 is a cross-sectional view showing the configuration of the second transparent member 42. This is a sectional view in the same direction as FIG. On the second transparent member 42, the first type wiring member 14, the second adhesive 46, the first light reflecting member 50a and the second light reflecting member 50b, which are collectively referred to as the light reflecting member 50, are arranged. The light reflection member 50 includes a resin base material 56 and a reflection film 58.

The second transparent member 42 has the first region 52 arranged at the central portion in the y-axis direction and the second regions 54 arranged at both end portions in the y-axis direction. In the first region 52, the second adhesive 46 is disposed on the z-axis positive direction side of the second transparent member 42, and the plurality of first-type wiring members 14 are arranged on the z-axis positive direction side of the second adhesive 46. Are placed. On the other hand, in the second region 54, the second adhesive 46 is disposed on the positive side of the second transparent member 42 in the z-axis direction, and the first light reflecting member 50a is placed on the positive side of the second adhesive 46 in the z-axis. The second light reflecting member 50b is arranged. As described above, since the first light reflecting member 50a and the second light reflecting member 50b have the same shape, the light reflecting member 50 will be described below.

The light reflecting member 50 has a resin base material 56 and a reflective film 58 formed on the surface of the resin base material 56. The resin base material 56 is made of, for example, PET or acrylic. The reflection film 58 is, for example, a metal film made of a metal such as aluminum or silver, and is an aluminum vapor deposition film here. On the surface of the resin substrate 56, a plurality of protrusions having a substantially triangular cross section in the yz plane are arranged in the y-axis direction. Since the protrusion extends in the x-axis direction, the resin base material 56 has a shape in which a plurality of substantially triangular prisms having a bottom surface in the yz plane and extending in the x-axis direction are arranged in the y-axis direction. This corresponds to arranging a plurality of triangular groove shapes extending in the x-axis direction in the y-axis direction. Further, the reflection film 58 is formed similarly to the shape of the surface of the resin base material 56. In this way, the resin base material 56 and the reflection film 58 are laminated, and the light reflection member 50 having a plurality of protrusions on the surface is configured.

The plurality of protrusions scatter the sunlight that has entered the solar cell module 100 and has passed through the gaps between the adjacent solar cells 10, so that the interface between the first protective member 30 and the air layer, or the first protective member 30. And is reflected at the interface between the first sealing member 32. Due to such reflection, the sunlight is guided to the solar battery cell 10. The thickness of the resin base material 56 is, for example, 50 μm to 500 μm. The height between the protrusion and the groove is 5 μm or more and 100 μm or less, and the interval (pitch) between adjacent protrusions is 20 μm or more and 400 μm or less. Here, the height between the protrusion and the groove is 12 μm, and the interval (pitch) between the adjacent protrusions is 40 μm. In the light reflecting member 50, the triangular groove shapes extending in the x-axis direction are arranged in the y-axis direction, but the light reflecting member 50 is not limited to this and may be any one that can scatter sunlight. The shape may be a conical shape, a quadrangular pyramid shape, a polygonal pyramid shape, or a combination of these shapes.

Until now, the light reflecting member 50 is arranged on the second transparent member 42. On the other hand, the light reflecting member 50 may be arranged on the first transparent member 40 instead of the second transparent member 42. Here, such a configuration will be described with reference to FIG. FIG. 6 is a cross-sectional view showing another configuration of the first transparent member 40. This is a cross-sectional view in the same direction as FIGS. 4 and 5. On the first transparent member 40, the first type wiring member 14, the first adhesive 44, the first light reflecting member 50a and the second light reflecting member 50b, which are collectively referred to as the light reflecting member 50, are arranged. The light reflection member 50 includes a resin base material 56, a reflection film 58, and an adhesive 60.

The first transparent member 40 has the first region 52 arranged at the central portion in the y-axis direction and the second regions 54 arranged at both end portions in the y-axis direction. In the first region 52, the first adhesive 44 is disposed on the negative side of the first transparent member 40 in the z-axis direction, and the plurality of first-type wiring members 14 are disposed on the negative side of the first adhesive 44 in the z-axis direction. Are placed. On the other hand, in the second region 54, the first adhesive 44 is arranged on the negative side of the z axis of the first transparent member 40, and the first light reflecting member 50a is arranged on the negative side of the z axis of the first adhesive 44. The second light reflecting member 50b is arranged. In this case as well, the first light reflecting member 50a and the second light reflecting member 50b have the same shape, and will be described below as the light reflecting member 50.

The light reflecting member 50 includes a resin base material 56, a reflective film 58 formed on the surface of the resin base material 56, and an adhesive 60. The resin base material 56 and the reflective film 58 are configured in the same manner as before, but are arranged so that the direction in the z-axis direction is opposite to that in the past. The adhesive 60 is arranged on the positive side of the resin substrate 56 in the z-axis direction. The adhesive 60 is formed in the same manner as the first adhesive 44 and is adhered to the first adhesive 44. The plurality of protrusions of the light reflection member 50 having such a configuration also scatter the sunlight that has entered the solar cell module 100 and passed through the gaps between the adjacent solar battery cells 10, and the first protection member 30 and the air layer. And the interface between the first protective member 30 and the first sealing member 32. Due to such reflection, the sunlight is guided to the solar battery cell 10.

Below, the manufacturing method of the solar cell module 100 is demonstrated. First, the resin sheet 80 in which the light reflecting member 50 is arranged on the second transparent member 42 is prepared. By overlapping the first transparent member 40 of the resin sheet 80 on one of the two adjacent solar cells 10 and by overlapping the second transparent member 42 of the resin sheet 80 on the other of the two adjacent solar cells 10. , String 12 is generated. The first protective member 30, the first sealing member 32, the string 12, the second sealing member 34, and the second protective member 36 are sequentially stacked in this order from the positive direction to the negative direction of the z-axis to form a laminate. Is generated. Following this, a laminating and curing step is performed on the laminated body. In this step, air is removed from the laminated body, and the laminated body is heated and pressed to integrate the laminated body. In the vacuum laminating in the laminating/curing process, the temperature is set to about 50 to 140° C. as described above. Further, the terminal box is attached to the second protection member 36 with an adhesive.

According to the present embodiment, the second transparent member 42 arranges the light reflecting member 50 in a portion where the solar battery cells 10 are not arranged, and therefore reflects the sunlight incident between two adjacent solar battery cells 10. can do. Further, since the sunlight incident between the two adjacent solar cells 10 is reflected, the sunlight incident between the two adjacent solar cells 10 can effectively contribute to power generation. Further, since the sunlight incident between the two adjacent solar battery cells 10 is effectively contributed to the power generation, the conversion efficiency of the solar battery module 100 can be improved.

Further, since the resin sheet 80 in which the light reflecting member 50 is arranged on the second transparent member 42 is used, it is only necessary to attach the first transparent member 40 and the second transparent member 42 to the two adjacent solar battery cells 10. The string 12 can be generated. Moreover, since the string 12 is generated only by sticking the first transparent member 40 and the second transparent member 42 to the two adjacent solar battery cells 10, it is possible to suppress the manufacturing complexity of the solar battery module 100. Further, since the resin sheet 80 in which the light reflecting member 50 is arranged on the second transparent member 42 is used, it is possible to improve the conversion efficiency of the solar cell module 100 while suppressing the manufacturing complexity of the solar cell module 100.

Moreover, since the 1st transparent member 40 may arrange|position the light reflection member 50 in the part where the photovoltaic cell 10 is not arrange|positioned instead of the 2nd transparent member 42, the freedom of a structure can be improved. In addition, the first type wiring member 14 is arranged between the light receiving surface 22 side of one of the two solar cells 10 and the first transparent member 40, and the back surface 24 side of the other of the two solar cells 10 is disposed. Since the first type wiring member 14 is also arranged between the second transparent member 42 and the second transparent member 42, the resin sheet 80 can be used. Further, since the resin sheet 80 is used, manufacturing can be simplified.

The second transparent members 42 are adjacent to each other because the light reflecting members 50 are arranged on both sides in a direction different from the extending direction of the first-type wiring member 14 so as to sandwich the portion where the solar battery cells 10 are arranged. The sunlight incident on the gap between the two strings 12 can be reflected. Further, instead of the second transparent member 42, the first transparent member 40 sandwiches the portion where the solar battery cells 10 are arranged so as to sandwich the portions where the first-type wiring member 14 extends, on both sides of the light reflecting member. Since 50 may be arranged, the degree of freedom of configuration can be improved. Further, since the size of the first transparent member 40 is smaller than the size of the second transparent member 42, it is possible to reduce the loss when transmitting the sunlight incident from the first protective member 30. Further, since the loss when transmitting the sunlight incident from the first protection member 30 is reduced, the conversion efficiency of the solar cell module 100 can be improved.

Further, since the resin sheet 80 in which the light reflecting members 50 are provided on both sides in a direction different from the direction in which the first type wiring member 14 extends so as to sandwich the portion where the solar battery cells 10 are arranged is used, The resin sheet 80 having the same structure can be used for the fourth string 12d. Moreover, since the resin sheet 80 having the same configuration is used in the first string 12a to the fourth string 12d, the material cost of the solar cell module 100 can be reduced.

The outline of one aspect of the present invention is as follows. A solar battery module 100 according to an aspect of the present invention includes a plurality of solar battery cells 10 arranged side by side in a first direction, a plurality of first type wiring members 14 connecting the plurality of solar battery cells 10, and a plurality of wiring members 14. A plurality of first transparent members 40 arranged on the light receiving surface 22 side of each of the solar cells 10 and bonded to the plurality of first type wiring members 14, and arranged on the back surface 24 side of each of the plurality of solar cells 10. And a plurality of second transparent members 42 bonded to the plurality of first-type wiring members 14. Of the plurality of first transparent members 40 and the plurality of second transparent members 42, the first transparent member 40 and the second transparent member 42 facing each other sandwich one solar battery cell 10 and the plurality of first transparent members 40. At least one of the plurality of second transparent members 42 arranges the light reflection member 50 in a portion where the solar cell 10 is not arranged.

The plurality of solar cells 10 are arranged in a second direction intersecting the first direction, and at least one of the plurality of first transparent members 40 and the plurality of second transparent members 42 is a portion where the solar cells 10 are arranged. The light reflecting members 50 may be arranged on both sides in the second direction sandwiching.

The size of each of the plurality of first transparent members 40 is smaller than the size of each of the plurality of second transparent members 42.

The first protective member 30 is provided on the light receiving surface 22 side of the first transparent member 40, and is provided between the first transparent member 40 and the first protective member 30 on the light receiving surface 22 side of the first transparent member 40. The first sealing member 32, the second protection member 36 provided on the back surface 24 side of the second transparent member 42, and the back surface 24 side of the second transparent member 42, and the second transparent member 42 and the second protection member. The second sealing member 34 provided between the member 36 and the member 36 may be further included. The first sealing member 32 and the second sealing member 34 have lower softening temperatures than the first protective member 30 and the second protective member 36.

The softening temperatures of the plurality of first transparent members 40 and the plurality of second transparent members 42 are higher than those of the first sealing member 32 and the second sealing member 34.

Another aspect of the present invention is a resin sheet 80. The resin sheet 80 should be arranged on one light receiving surface 22 side of two adjacent solar cells 10 and the first transparent member 40 on the other back surface 24 side of two adjacent solar cells 10. The second transparent member 42 and the first-type wiring member 14 that connects the first transparent member 40 and the second transparent member 42 are provided. The first-type wiring member 14 is arranged on the surface of the first transparent member 40 on the solar cell 10 side, and is arranged on the surface of the second transparent member 42 on the solar cell 10 side. At least one of the second transparent members 42 arranges the light reflecting member 50 on a portion of the surface on the solar cell 10 side where the solar cell 10 is not arranged.

(Example 2)
Next, a second embodiment will be described. Similar to Example 1, Example 2 relates to a solar cell module including a string formed by attaching a transparent member of a resin sheet in which a light reflecting member is arranged in advance to a solar battery cell. In the first embodiment, the first light reflecting member and the second light reflecting member are disposed on both sides of the first transparent member or the second transparent member with the first region interposed therebetween. On the other hand, in the second embodiment, the light reflecting member is arranged only on one side of the first region of the first transparent member or the second transparent member. The solar cell module 100 according to the second embodiment is of the same type as in FIGS. 1 and 2. Here, the difference from the above will be mainly described.

FIG. 7 is a perspective view of the resin sheet 80 used in the solar cell module 100. This is shown as in FIG. The resin sheet 80 includes the first type wiring member 14, the first transparent member 40, the second transparent member 42, the first adhesive 44, the second adhesive 46, and the light reflecting member 50. The 1st transparent member 40 is arrange|positioned at the light-receiving surface 22 side of one of the adjacent two photovoltaic cells 10, for example, the 13th photovoltaic cell 10ac of FIG. The first transparent member 40 has a quadrangular shape having the same size as the solar cell 10 on the xy plane. The first adhesive 44 is arranged on the surface of the first transparent member 40 on the thirteenth solar cell 10ac side, and the plurality of first-type wiring members 14 are arranged on the first adhesive 44.

The second transparent member 42 is arranged on the other side of the two adjacent solar cells 10, for example, on the back surface 24 side of the twelfth solar cell 10ab in FIG. The second transparent member 42 has a rectangular shape in the xy plane, and its size is larger than that of the solar cell 10. The length of the second transparent member 42 in the x-axis direction is equal to the length of the solar cell 10 in the x-axis direction, but the length of the second transparent member 42 in the y-axis direction is y of the solar cell 10. Longer than the axial length. The first region 52 is arranged on the y-axis positive direction side of the second transparent member 42, and the second region 54 is arranged on the y-axis negative direction side of the second transparent member 42. Further, the second adhesive 46 is disposed on the surface of the second transparent member 42 on the twelfth solar cell 10ab side. The first type wiring member 14 is arranged on the second adhesive 46 in the first area 52, and the light reflecting member 50 is arranged on the second adhesive 46 in the second area 54.

FIG. 8 is a sectional view showing the structure of the solar cell module 100 according to the second embodiment of the present invention. This is shown as in FIG. In the 22nd solar battery cell 10bb, the 32nd solar battery cell 10cb, and the 42nd solar battery cell 10db, the second transparent member 42 and the second adhesive 46 project from the solar battery cell 10 toward the negative side of the y-axis. The light reflecting member 50 is disposed on the positive side of the z-axis of the second adhesive 46 in the portion protruding toward the negative side of the y-axis. That is, the light reflecting member 50 is arranged on one side of the second transparent member 42 in the y-axis direction with respect to the portion where the solar battery cells 10 are arranged.

On the other hand, in the twelfth solar cell 10ab, the second transparent member 42 and the second adhesive 46 project from the solar cell 10 in the negative y-axis direction and also in the positive direction. The light reflecting member 50 is arranged on the positive side of the second adhesive 46 on the positive side of the z-axis in each of the portions that project on the negative side and the positive side of the y-axis. In the twelfth solar battery cell 10ab, the second transparent member 42 and the second adhesive 46 do not protrude in the positive y-axis direction, and the light reflection member 50 may not be disposed there.

The light reflecting member 50 is arranged at a position so as to project into the gap between two adjacent solar cells 10, for example, the twelfth solar cell 10ab and the twenty-second solar cell 10bb. Specifically, the light reflection member 50 arranged on the negative direction side of the y-axis of the twelfth solar battery cell 10ab is arranged between the twelfth solar battery cell 10ab and the twenty-second solar battery cell 10bb. Further, as shown in FIG. 1, the twelfth solar battery cell 10ab is included in the first string 12a extending in the x-axis direction, and the twenty-second solar battery cell 10bb is included in the second string 12b extending in the x-axis direction. Further, as shown in FIG. 7, the light reflecting member 50 also extends in the x-axis direction. Therefore, it can be said that the light reflecting member 50 is arranged at a position that projects into the gap between the two adjacent strings 12.

9A and 9B are cross-sectional views showing the configuration of the second transparent member 42. These are shown as in FIG. In FIG. 9A, the first type wiring member 14, the second adhesive 46, and the light reflecting member 50 are arranged on the second transparent member 42. The light reflection member 50 includes a resin base material 56 and a reflection film 58.

The second transparent member 42 has the first region 52 arranged on the positive side of the y-axis and the second region 54 arranged on the negative side of the y-axis. In the first region 52, the second adhesive 46 is disposed on the z-axis positive direction side of the second transparent member 42, and the plurality of first-type wiring members 14 are arranged on the z-axis positive direction side of the second adhesive 46. Are placed. On the other hand, in the second region 54, the second adhesive 46 is arranged on the positive side of the second transparent member 42 in the z-axis direction, and the light reflecting member 50 is arranged on the positive direction side of the z-axis of the second adhesive 46. To be done. With such a configuration, the width of the second region 54 in the y-axis direction is larger than, for example, twice the width of the one second region 54 in the first embodiment in the y-axis direction.

FIG. 9B shows a configuration different from that of FIG. The width of the second transparent member 42 in the y-axis direction in FIG. 9B is narrower than the width of the second transparent member 42 in the y-axis direction in FIG. 9A. for that reason. In FIG. 9A, the entire surface of the light reflecting member 50 on the negative side of the z axis is adhered to the second adhesive 46, whereas in FIG. Only a part of the negative side surface is bonded to the second adhesive 46.

Until now, the light reflecting member 50 is arranged on the second transparent member 42. On the other hand, the light reflecting member 50 may be arranged on the first transparent member 40 instead of the second transparent member 42. Here, such a configuration will be described with reference to FIG. FIG. 10 is a cross-sectional view showing another configuration of the first transparent member 40. This is shown as in FIG. The first type wiring member 14, the first adhesive 44, and the light reflecting member 50 are arranged on the first transparent member 40. The light reflection member 50 includes a resin base material 56, a reflection film 58, and an adhesive 60.

The first transparent member 40 has the first region 52 arranged on the positive side of the y-axis and the second region 54 arranged on the negative side of the y-axis. The configuration in the first area 52 is similar to that in FIG. On the other hand, in the second region 54, the first adhesive 44 is arranged on the negative side of the z axis of the first transparent member 40, and the light reflecting member 50 is arranged on the negative side of the z axis of the first adhesive 44. To be done. The light reflection member 50 is different from that in FIG. 6 only in the width in the y-axis direction, and is configured similarly to FIG. 6.

According to the present embodiment, the second transparent member 42 has the light reflecting member 50 arranged on one side in a direction different from the direction in which the first-type wiring member 14 extends with respect to the portion where the solar battery cells 10 are arranged. Therefore, sunlight that has entered the gap between the two adjacent strings 12 can be reflected. According to the present embodiment, the conversion efficiency in the twelfth solar battery cell 10ab and the forty-second solar battery cell 10db arranged at the end portion in the y-axis direction can be improved more easily than in the first embodiment. In Example 1, the width of the light reflecting member 50 on the positive side of the y-axis of the twelfth solar battery cell 10ab and the width of the light reflecting member 50 on the negative side of the y-axis of the 42nd solar battery cell 10db were: The distance is about half the distance between adjacent solar cells 10. However, according to this embodiment, the width of the light reflecting member 50 on the positive side of the y-axis of the twelfth solar cell 10ab and the light reflecting member 50 on the negative side of the y-axis of the 42nd solar cell 10db. The width of can be about the distance between the adjacent solar cells 10, and the utilization rate of the irradiated sunlight can be improved. Further, the first transparent member 40 instead of the second transparent member 42 is provided on one side of the portion where the solar battery cells 10 are arranged in a direction different from the direction in which the first type wiring member 14 extends. Can be arranged, so that the degree of freedom in configuration can be improved.

The outline of one aspect of the present invention is as follows. The plurality of solar cells 10 are arranged in a second direction intersecting the first direction, and at least one of the plurality of first transparent members 40 and the plurality of second transparent members 42 is a portion where the solar cells 10 are arranged. On the other hand, the light reflecting member 50 may be arranged on one side in the second direction.

(Example 3)
Next, a third embodiment will be described. Example 3 relates to a solar cell module including a string formed by sticking a transparent member of a resin sheet on which a light reflecting member is arranged in advance to a solar cell, as in the case of the third embodiment. Until now, the light reflecting member is arranged in the gap between two adjacent strings. On the other hand, in Example 3, the light reflecting member is arranged in the gap between the two solar cells adjacent to each other in one string. The solar cell module 100 according to the second embodiment is of the same type as that of FIG. Here, the difference from the above will be mainly described.

FIG. 11 is a cross-sectional view showing the structure of the solar cell module 100 according to the third embodiment of the present invention. This is shown as in FIG. The solar battery module 100 includes a twelfth solar battery cell 10ab, a thirteenth solar battery cell 10ac, a first type wiring member 14, a first protective member 30, a first sealing member 32, a second sealing member 34, and a second protective member. The member 36, the first transparent member 40, the second transparent member 42, the first adhesive 44, the second adhesive 46, and the light reflecting member 50 are included.

The twelfth solar battery cell 10ab and the thirteenth solar battery cell 10ac are stacked on the back surface side of the first protection member 30. The first-type wiring material 14, the first adhesive 44, and the first transparent member 40 are arranged on the light-receiving surface 22 of the solar cell 10, and the first-type wiring material 14, The second adhesive 46, the second transparent member 42, and the light reflecting member 50 are arranged. Here, FIG. 12 is used to explain these arrangements with respect to the solar battery cells 10.

FIG. 12 is a perspective view of the resin sheet 80 used in the solar cell module 100. This is shown as in FIG. The resin sheet 80 includes the first type wiring member 14, the first transparent member 40, the second transparent member 42, the first adhesive 44, the second adhesive 46, and the light reflecting member 50. The 1st transparent member 40 is arrange|positioned at the light-receiving surface 22 side of one of the adjacent two photovoltaic cells 10, for example, the 13th photovoltaic cell 10ac of FIG. The first transparent member 40 has a quadrangular shape having the same size as the solar cell 10 on the xy plane. The first adhesive 44 is arranged on the surface of the first transparent member 40 on the thirteenth solar cell 10ac side, and the plurality of first-type wiring members 14 are arranged on the first adhesive 44.

The second transparent member 42 is arranged on the other side of the two adjacent solar cells 10, for example, on the back surface 24 side of the twelfth solar cell 10ab in FIG. The second transparent member 42 has a rectangular shape in the xy plane, and its size is larger than that of the solar cell 10. The length of the second transparent member 42 in the y-axis direction is equal to the length of the solar cell 10 in the y-axis direction, but the length of the second transparent member 42 in the x-axis direction is x of the solar cell 10. Longer than the axial length. The first region 52 is arranged on the negative side of the x-axis of the second transparent member 42, and the second region 54 is arranged on the positive side of the x-axis of the second transparent member 42. Further, the second adhesive 46 is disposed on the surface of the second transparent member 42 on the twelfth solar cell 10ab side. The first type wiring member 14 is arranged on the second adhesive 46 in the first area 52, and the light reflecting member 50 is arranged on the second adhesive 46 in the second area 54. Returning to FIG.

In the twelfth solar cell 10ab, the second transparent member 42 and the second adhesive 46 protrude from the twelfth solar cell 10ab in the positive direction of the x-axis. The light reflecting member 50 is arranged on the positive side of the z-axis of the second adhesive 46 in the portion protruding toward the positive side of the x-axis. That is, the light reflecting member 50 is arranged on one side of the second transparent member 42 in the x-axis direction with respect to the portion where the solar cell 10 is arranged.

The light reflecting member 50 is arranged at a position so as to project into two adjacent solar cells 10, for example, a gap between the twelfth solar cell 10ab and the thirteenth solar cell 10ac. Specifically, the light reflection member 50 arranged on the positive direction side of the x-axis of the twelfth solar battery cell 10ab is arranged between the twelfth solar battery cell 10ab and the thirteenth solar battery cell 10ac. Furthermore, as shown in FIG. 1, since the twelfth photovoltaic cell 10ab is included in the first string 12a extending in the x-axis direction, the light reflecting member 50 is arranged at a position where it projects into the gap in the string 12. It can be said that it is done.

Until now, the light reflecting member 50 is arranged on the second transparent member 42. On the other hand, the light reflecting member 50 may be arranged on the first transparent member 40 instead of the second transparent member 42. Here, such a configuration will be described with reference to FIG. FIG. 13 is a cross-sectional view showing another configuration of the first transparent member 40. This is a sectional view in the same direction as FIG. 11. The first type wiring member 14, the first adhesive 44, and the light reflecting member 50 are arranged on the first transparent member 40. The light reflecting member 50 includes an adhesive 60.

The first transparent member 40 has the first region 52 arranged on the negative side of the x-axis and the second region 54 arranged on the positive side of the x-axis. The configuration in the first area 52 is similar to that in FIG. On the other hand, in the second region 54, the first adhesive 44 is disposed on the negative side of the first transparent member 40 in the z-axis direction, and the first adhesive 44 is disposed on the negative side of the z-axis via the adhesive 60. The light reflecting member 50 is arranged.

According to this embodiment, since the second transparent member 42 has the light reflecting member 50 arranged on one side in the direction in which the first type wiring member 14 extends with respect to the portion where the solar battery cells 10 are arranged, one string is formed. It is possible to reflect the sunlight that has entered the gap in 12. Further, instead of the second transparent member 42, the first transparent member 40 may be arranged with the light reflecting member 50 on one side in the direction in which the first type wiring member 14 extends with respect to the portion where the solar battery cells 10 are arranged. Since it is good, the degree of freedom of configuration can be improved.

The outline of one aspect of the present invention is as follows. At least one of the plurality of first transparent members 40 and the plurality of second transparent members 42 may have the light reflecting member 50 arranged on one side in the first direction with respect to the portion where the solar cells 10 are arranged.

The present invention has been described above based on the embodiments. It should be understood by those skilled in the art that this embodiment is an exemplification, that various modifications can be made to the combinations of the respective constituent elements or the respective processing processes, and that such modifications are within the scope of the present invention. is there.

The first embodiment and the third embodiment may be combined, and the second embodiment and the third embodiment may be combined. According to this modification, the effect of the combination can be obtained.

In Examples 1 to 3, the second adhesive 46 is arranged on the positive side of the second transparent member 42 in the z-axis direction, and the resin base material 56 is attached to the positive side of the second adhesive 46 in the z-axis direction. .. However, not limited to this, for example, the resin base material 56 may be formed on the second region 54 of the second transparent member 42. That is, the resin base material 56 may be integrally formed with the second transparent member 42. According to this modification, the manufacturing of the solar cell module 100 can be further simplified.

DESCRIPTION OF SYMBOLS 10 solar cell, 12 string, 14 1st type wiring material, 16 2nd type wiring material, 18 3rd type wiring material, 20 frame, 22 light receiving surface (1st surface), 24 back surface (2nd surface), 30 1st protection member, 32 1st sealing member, 34 2nd sealing member, 36 2nd protection member, 40 1st transparent member, 42 2nd transparent member, 44 1st adhesive agent, 46 2nd adhesive agent, 50 Light reflection member, 52 1st area|region, 54 2nd area|region, 56 resin base material, 58 reflective film, 60 adhesive agent, 80 resin sheet, 100 solar cell module.

Claims (5)

A plurality of solar cells arranged side by side in the first direction,
A plurality of wiring members that connect the plurality of solar cells,
A plurality of first transparent members arranged on the first surface side of each of the plurality of solar cells and bonded to the plurality of wiring members;
A plurality of second transparent members arranged on the second surface side of each of the plurality of solar cells and bonded to the plurality of wiring members;
A first protection member provided on the first surface side of the first transparent member;
A first sealing member provided on the first surface side of the first transparent member and between the first transparent member and the first protective member;
A second protective member provided on the second surface side of the second transparent member;
A second sealing member provided on the second surface side of the second transparent member and between the second transparent member and the second protective member ,
Of the plurality of first transparent members and the plurality of second transparent members, the first transparent member and the second transparent member facing each other sandwich one solar battery cell,
At least one of the plurality of first transparent members and the plurality of second transparent members has a light reflecting member arranged in a portion where the solar cells are not arranged,
The plurality of solar cells are arranged in a second direction intersecting with the first direction,
At least one of the plurality of first transparent members and the plurality of second transparent members has light reflecting members arranged on both sides in the second direction sandwiching the portion where the solar cells are arranged,
The solar cell module, wherein the first sealing member and the second sealing member have a softening temperature lower than that of the first protective member and the second protective member. A plurality of solar cells arranged side by side in the first direction,
A plurality of wiring members that connect the plurality of solar cells,
A plurality of first transparent members arranged on the first surface side of each of the plurality of solar cells and bonded to the plurality of wiring members;
A plurality of second transparent members arranged on the second surface side of each of the plurality of solar cells and bonded to the plurality of wiring members;
A first protection member provided on the first surface side of the first transparent member;
A first sealing member provided on the first surface side of the first transparent member and between the first transparent member and the first protective member;
A second protective member provided on the second surface side of the second transparent member;
A second sealing member provided on the second surface side of the second transparent member between the second transparent member and the second protective member ,
Of the plurality of first transparent members and the plurality of second transparent members, the first transparent member and the second transparent member facing each other sandwich one solar battery cell,
At least one of the plurality of first transparent members and the plurality of second transparent members has a light reflection member arranged in a portion where the solar cells are not arranged,
The plurality of solar cells are arranged in a second direction intersecting with the first direction,
At least one of the plurality of first transparent members and the plurality of second transparent members has a light reflecting member arranged on one side in the second direction with respect to a portion where the solar battery cells are arranged,
The said 1st sealing member and the said 2nd sealing member have a softening temperature lower than the said 1st protection member and the said 2nd protection member, The solar cell module characterized by the above-mentioned. At least one of the plurality of first transparent members and the plurality of second transparent members has a light reflecting member arranged on one side in the first direction with respect to a portion where the solar battery cells are arranged. The solar cell module according to 1 or 2 . The solar cell module according to any one of claims 1 to 3 , wherein each of the plurality of first transparent members has a size smaller than that of each of the plurality of second transparent members. 3. The sun according to claim 1, wherein the plurality of first transparent members and the plurality of second transparent members have a softening temperature higher than that of the first sealing member and the second sealing member. Battery module.

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