JP2018041840A - Solar cell module and resin sheet - Google Patents

Solar cell module and resin sheet Download PDF

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JP2018041840A
JP2018041840A JP2016175020A JP2016175020A JP2018041840A JP 2018041840 A JP2018041840 A JP 2018041840A JP 2016175020 A JP2016175020 A JP 2016175020A JP 2016175020 A JP2016175020 A JP 2016175020A JP 2018041840 A JP2018041840 A JP 2018041840A
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transparent
disposed
solar cell
transparent member
light reflecting
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JP6735472B2 (en
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優也 中村
Yuya Nakamura
優也 中村
祐 石黒
Hiroshi Ishiguro
祐 石黒
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Panasonic Intellectual Property Management Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y02E10/52—PV systems with concentrators

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Abstract

PROBLEM TO BE SOLVED: To provide a technique improving conversion efficiency of a solar cell module while suppressing an increase in complication of the manufacturing of the solar cell module.SOLUTION: A plurality of first transparent members 40 are arranged on a light receiving surface 22 side of a 12th solar battery cell 10ab,..., and a 42th solar battery cell 10db. A plurality of second transparent members 42 are arranged on a rear surface 24 side of the 12th solar battery cell 10ab,..., and the 42th solar battery cell 10db. One of the first transparent members 40 and one of the second transparent members 42 facing each other sandwich one of the 12th solar battery cell 10ab,..., and the 42th solar battery cell 10db. In at least one of the first transparent members 40 and the second transparent members 42, light reflecting members 50 are arranged at portions where the 12th solar battery cell 10ab,..., and the 42th solar battery cell 10db are not arranged.SELECTED DRAWING: Figure 4

Description

本発明は、太陽電池モジュールに関し、特に複数の太陽電池セルを含む太陽電池モジュールおよび樹脂シートに関する。   The present invention relates to a solar battery module, and more particularly to a solar battery module including a plurality of solar battery cells and a resin sheet.

太陽電池モジュールでは、前面カバー部材と裏面カバー部材との間に複数の太陽電池セルが透明充填材により封止される。複数の太陽電池セルはマトリックス状に配置されるとともに、１つの方向に沿って隣接した２つの太陽電池セルがインターコネクタによって連結される。太陽電池セル間の隙間に照射される太陽光を有効に利用するために、太陽電池セル間の隙間に光反射部材が設けられる（例えば、特許文献１参照）。   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 in one direction are connected by an interconnector. In order to effectively use sunlight irradiated to the gaps between the solar battery cells, a light reflecting member is provided in the gaps between the solar battery cells (see, for example, Patent Document 1).

特開２０１３−９８４９６号公報JP2013-98496A

太陽電池モジュールの製造を簡易にするために、２つの透明部材が複数のワイヤによって接続されたワイヤフィルムを使用することがある。ワイヤフィルムを太陽電池モジュールに使用する場合、２つの透明部材のそれぞれが隣接の太陽電池セルに貼り付けられ、ワイヤが配線材として使用される。このようなワイヤフィルムの貼り付けによって形成されたストリング間に光反射部材を配置しても、ストリング間の隙間に照射される太陽光の有効利用が可能になる。しかしながらストリングを製造してから光反射部材を配置させる作業により、太陽電池モジュールの製造が複雑になる。   In order to simplify the manufacture of the solar cell module, a wire film in which two transparent members are connected by a plurality of wires may be used. When using a wire film for a solar cell module, each of two transparent members is affixed on an adjacent solar cell, and a wire is used as a wiring material. Even if the light reflecting member is arranged between the strings formed by sticking such a wire film, it is possible to effectively use sunlight irradiated to the gaps between the strings. However, the manufacturing of the solar cell module is complicated by the operation of arranging the light reflecting member after manufacturing the string.

本発明はこうした状況に鑑みてなされたものであり、その目的は、太陽電池モジュールの製造の複雑化を抑制しながら、太陽電池モジュールの変換効率を向上させる技術を提供することにある。   This invention is made | formed in view of such a condition, The objective is to provide the technique which improves the conversion efficiency of a solar cell module, suppressing the complexity of manufacture of a solar cell module.

上記課題を解決するために、本発明のある態様の太陽電池モジュールは、第１方向に並んで配置された複数の太陽電池セルと、複数の太陽電池セルを接続する複数の配線材と、複数の太陽電池セルのそれぞれの第１面側に配置され、複数の配線材に接着される複数の第１透明部材と、複数の太陽電池セルのそれぞれの第２面側に配置され、複数の配線材に接着される複数の第２透明部材とを備える。複数の第１透明部材と複数の第２透明部材のうち、互いに対向した第１透明部材と第２透明部材は、１つの太陽電池セルを挟み込み、複数の第１透明部材と複数の第２透明部材の少なくとも一方は、太陽電池セルを非配置の部分に光反射部材を配置する。   In order to solve the above-described problems, a solar cell module according to an aspect of the present invention includes a plurality of solar cells arranged in a first direction, a plurality of wiring members connecting the plurality of solar cells, and a plurality of solar cells. A plurality of first transparent members disposed on the first surface side of each of the solar cells and bonded to the plurality of wiring members; and a plurality of wirings disposed on the second surface side of the plurality of solar cells. A plurality of second transparent members bonded to the material. Among 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 arranges the light reflecting member in a portion where the solar cells are not arranged.

本発明の別の態様は、樹脂シートである。この樹脂シートは、隣接した２つの太陽電池セルの一方の第１面側に配置すべき第１透明部材と、隣接した２つの太陽電池セルの他方の第２面側に配置すべき第２透明部材と、第１透明部材と第２透明部材とを接続する配線材とを備える。配線材は、第１透明部材における太陽電池セル側の面に配置されるとともに、第２透明部材における太陽電池セル側の面に配置され、第１透明部材と第２透明部材の少なくとも一方は、太陽電池セル側の面のうち、太陽電池セルを非配置の部分に光反射部材を配置する。   Another aspect of the present invention is a resin sheet. The resin sheet includes a first transparent member to be disposed on one first surface side of two adjacent solar cells, and a second transparent member to be disposed on the other second surface side of the two adjacent solar cells. A member, and a wiring member that connects the first transparent member and the second transparent member. The wiring member is disposed on the solar cell side surface of the first transparent member, and is disposed on the solar cell side surface of the second transparent member, and at least one of the first transparent member and the second transparent member is A light reflection member is arrange | positioned in the part which does not arrange | position a photovoltaic cell among the surfaces at the side of a photovoltaic cell.

本発明によれば、太陽電池モジュールの製造の複雑化を抑制しながら、太陽電池モジュールの変換効率を向上できる。   ADVANTAGE OF THE INVENTION According to this invention, the conversion efficiency of a solar cell module can be improved, suppressing complication of manufacture of a solar cell module.

本発明の実施例１に係る太陽電池モジュールの構造を示す平面図である。It is a top view which shows the structure of the solar cell module which concerns on Example 1 of this invention. 図１の太陽電池モジュールの構造を示す断面図である。It is sectional drawing which shows the structure of the solar cell module of FIG. 図１の太陽電池モジュールにおいて使用される樹脂シートの斜視図である。It is a perspective view of the resin sheet used in the solar cell module of FIG. 図１の太陽電池モジュールの構造を示す別の断面図である。It is another sectional view showing the structure of the solar cell module of FIG. 図４の第２透明部材の構成を示す断面図である。It is sectional drawing which shows the structure of the 2nd transparent member of FIG. 図４の第１透明部材の別の構成を示す断面図である。It is sectional drawing which shows another structure of the 1st transparent member of FIG. 本発明の実施例２に係る太陽電池モジュールにおいて使用される樹脂シートの斜視図である。It is a perspective view of the resin sheet used in the solar cell module which concerns on Example 2 of this invention. 本発明の実施例２に係る太陽電池モジュールの構造を示す断面図である。It is sectional drawing which shows the structure of the solar cell module which concerns on Example 2 of this invention. 図９（ａ）−（ｂ）は、図８の第２透明部材の構成を示す断面図である。FIGS. 9A and 9B are cross-sectional views showing the configuration of the second transparent member of FIG. 図８の第１透明部材の別の構成を示す断面図である。It is sectional drawing which shows another structure of the 1st transparent member of FIG. 本発明の実施例３に係る太陽電池モジュールの構造を示す断面図である。It is sectional drawing which shows the structure of the solar cell module which concerns on Example 3 of this invention. 図１１の太陽電池モジュールにおいて使用される樹脂シートの斜視図である。It is a perspective view of the resin sheet used in the solar cell module of FIG. 図１１の第１透明部材の別の構成を示す断面図である。It is sectional drawing which shows another structure of the 1st transparent member of FIG.

（実施例１）
本発明を具体的に説明する前に、概要を述べる。本発明の実施例１は、複数の太陽電池セルがマトリックス状に配置された太陽電池モジュールに関する。太陽電池モジュールでは、第１保護部材と第２保護部材との間に封止部材が配置され、封止部材によって複数の太陽電池セルが封止される。その際、隣接した２つの太陽電池セルは、ワイヤフィルムによって接続される。ワイヤフィルムは、前述のごとく、２つの透明部材が複数のワイヤによって接続されており、各透明部材が太陽電池セルに貼り付けられる。ワイヤが配線材の役割を有するので、ワイヤが延びる方向に配置された複数の太陽電池セルを複数のワイヤフィルムで接続することによってストリングが形成される。第１保護部材から入射された太陽光のうち、ストリング間を通り抜けた成分は、太陽電池セルに到達しないので、発電に寄与しない。太陽電池モジュールの変換効率を向上させるために、このような成分を太陽電池セルに到達させることが望まれる。そのために、ストリング間に光反射部材を配置させることによって、ストリング間を通り抜けた太陽光を光反射部材で反射させて太陽電池セルに到達させる。 Example 1
Before describing the present invention in detail, an outline will be described. 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, a sealing member is disposed between the first protective member and the second protective member, and the plurality of solar cells are sealed by the sealing member. In that case, two adjacent photovoltaic 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 a wire has a role of a wiring member, a string is formed by connecting a plurality of solar cells arranged in a direction in which the wire extends with a plurality of wire films. Of the sunlight incident from the first protective member, the component that has passed through between the strings does not reach the solar battery cell and therefore does not contribute to power generation. In order to improve the conversion efficiency of the solar cell module, it is desired that such components reach the solar cell. Therefore, by arranging a light reflecting member between the strings, the sunlight passing between the strings is reflected by the light reflecting member and reaches the solar cells.

ワイヤフィルムは、太陽電池モジュールの製造を簡易にするために使用される。しかしながら、複数のストリングを製造した後にそれらを並べてから、それらの間に光反射部材を配置させる工程を追加することによって、太陽電池モジュールの製造が複雑化する。太陽電池モジュールの製造の複雑化を抑制しながら、太陽電池モジュールの変換効率を向上させるために、本実施例では、ワイヤフィルムのうちの１つの透明部材のサイズが太陽電池セルのサイズに合わされるが、もう１つの透明部材のサイズは太陽電池セルのサイズよりも大きくされる。また、もう１つの透明部材において、太陽電池セルを貼り付けない部分には、光反射部材が配置される。つまり、光反射部材が予め配置されたワイヤフィルムが使用される。なお、以下の説明において、「平行」、「垂直」は、完全な平行、垂直だけではなく、誤差の範囲で平行、垂直からずれている場合も含むものとする。また、「略」は、おおよその範囲で同一であるという意味である。   A wire film is used in order to simplify manufacture of a solar cell module. However, the manufacturing of the solar cell module is complicated by adding a step of arranging the light reflecting members between the plurality of strings after the strings are manufactured. In this embodiment, the size of one transparent member of the wire film is matched to the size of the solar cell in order to improve the conversion efficiency of the solar cell module while suppressing the complexity of manufacturing the solar cell module. However, the size of the other transparent member is made larger than the size of the solar battery cell. Moreover, a light reflection member is arrange | positioned in the part which does not affix a photovoltaic cell in another transparent member. That is, a wire film in which a light reflecting member is arranged in advance is used. 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.

図１は、本発明の実施例１に係る太陽電池モジュール１００の構造を示す平面図である。図１に示すように、ｘ軸、ｙ軸、ｚ軸からなる直角座標系が規定される。ｘ軸、ｙ軸は、太陽電池モジュール１００の平面内において互いに直交する。ｚ軸は、ｘ軸およびｙ軸に垂直であり、太陽電池モジュール１００の厚み方向に延びる。また、ｘ軸、ｙ軸、ｚ軸のそれぞれの正の方向は、図１における矢印の方向に規定され、負の方向は、矢印と逆向きの方向に規定される。太陽電池モジュール１００を形成する２つの主表面であって、かつｘ−ｙ平面に平行な２つの主表面のうち、ｚ軸の正方向側に配置される主平面が受光面であり、ｚ軸の負方向側に配置される主平面が裏面である。以下では、ｚ軸の正方向側を「受光面側」とよび、ｚ軸の負方向側を「裏面側」とよぶ。そのため、図１は、太陽電池モジュール１００の受光面側からの平面図であるといえる。   FIG. 1 is a plan view showing the structure of a solar cell module 100 according to Embodiment 1 of the present invention. As shown in FIG. 1, a rectangular coordinate system composed 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 module 100. The z axis is perpendicular to the x axis and the y axis and extends in the thickness direction of the solar cell module 100. 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 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 is the back surface. Hereinafter, the positive direction side of the z-axis is referred to as “light-receiving surface side”, and the negative direction side of the z-axis is referred to as “back surface side”. Therefore, FIG. 1 can be said to be a plan view from the light receiving surface side of the solar cell module 100.

太陽電池モジュール１００は、太陽電池セル１０と総称される第１１太陽電池セル１０ａａ、・・・、第４６太陽電池セル１０ｄｆ、第１種配線材１４、第２種配線材１６、第３種配線材１８、フレーム２０と総称される第１フレーム２０ａ、第２フレーム２０ｂ、第３フレーム２０ｃ、第４フレーム２０ｄを含む。   The solar cell module 100 includes eleventh solar cells 10aa,..., 46th solar cell 10df, first type wiring material 14, second type wiring material 16, third type wiring, which are collectively referred to as the solar cell 10. The first frame 20a, the second frame 20b, the third frame 20c, and the fourth frame 20d, which are collectively referred to as the material 18 and the frame 20, are included.

第１フレーム２０ａは、ｘ軸方向に延び、第２フレーム２０ｂは、第１フレーム２０ａのｘ軸の正方向側端からｙ軸の負方向に延びる。また、第３フレーム２０ｃは、第２フレーム２０ｂのｙ軸の負方向側端からｘ軸の負方向に延び、第４フレーム２０ｄは、第３フレーム２０ｃのｘ軸の負方向側端と第１フレーム２０ａのｘ軸の負方向側端とを結ぶ。フレーム２０は、太陽電池モジュール１００の外周を囲んでおり、アルミニウム等の金属で形成される。ここで、第１フレーム２０ａ、第３フレーム２０ｃは、第２フレーム２０ｂ、第４フレーム２０ｄよりも長いので、太陽電池モジュール１００は、ｙ軸方向よりもｘ軸方向に長い矩形状を有する。   The first frame 20a extends in the x-axis direction, and the second frame 20b extends in the negative direction of the y-axis from the x-axis positive side end of the first frame 20a. The third frame 20c extends in the negative direction of the x axis from the negative end of the second frame 20b in the negative direction of the x axis, and the fourth frame 20d extends from the negative end of the third frame 20c in the negative direction of the negative direction of the x axis. The frame 20a is connected to the x-axis negative side end. The frame 20 surrounds the outer periphery of the solar cell module 100 and is formed 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.

複数の太陽電池セル１０のそれぞれは、入射する光を吸収して光起電力を発生する。特に、太陽電池セル１０は、受光面において吸収した光から起電力を発生するとともに、裏面において吸収した光からも光起電力を発生する。太陽電池セル１０は、例えば、結晶系シリコン、ガリウム砒素（ＧａＡｓ）またはインジウム燐（ＩｎＰ）等の半導体材料によって形成される。太陽電池セル１０の構造は、特に限定されないが、ここでは、一例として、結晶シリコンとアモルファスシリコンとが積層されているとする。また、太陽電池セル１０は、ｘ−ｙ平面において、四角形の形状を有するが、その他の形状、例えば、八角形の形状を有してもよい。図１では省略しているが、各太陽電池セル１０の受光面および裏面には、互いに平行にｙ軸方向に延びる複数のフィンガー電極が備えられる。   Each of the plurality of solar cells 10 absorbs incident light and generates photovoltaic power. In particular, the solar cell 10 generates an electromotive force from the light absorbed on the light receiving surface and also generates a photoelectromotive force from the light absorbed on the back surface. The solar battery cell 10 is made of, for example, a semiconductor material such as crystalline silicon, gallium arsenide (GaAs), or indium phosphorus (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 stacked. In addition, 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 to each other on the light receiving surface and the back surface of each solar battery cell 10.

複数の太陽電池セル１０は、ｘ−ｙ平面上にマトリックス状に配列される。ここでは、ｘ軸方向に６つの太陽電池セル１０が並べられる。ｘ軸方向に並んで配置される６つの太陽電池セル１０は、第１種配線材１４によって直列に接続され、１つのストリング１２が形成される。例えば、第１１太陽電池セル１０ａａ、第１２太陽電池セル１０ａｂ、・・・、第１６太陽電池セル１０ａｆが接続されることによって、第１ストリング１２ａが形成される。また、第２ストリング１２ｂから第４ストリング１２ｄも同様に形成される。その結果、４つのストリング１２がｙ軸方向に平行に並べられる。このように、ｘ軸方向に並べられる太陽電池セル１０の数は、ｙ軸方向に並べられる太陽電池セル１０の数よりも多い。ｘ軸方向を「第１方向」とよぶ場合、ｙ軸方向は「第２方向」とよばれる。なお、ストリング１２に含まれる太陽電池セル１０の数は「６」に限定されず、ストリング１２の数は「４」に限定されない。   The plurality of solar battery 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 photovoltaic cells 10 arranged side by side in the x-axis direction are connected in series by the first-type wiring material 14 to form one string 12. For example, the first string 12a is formed by connecting the eleventh solar battery cell 10aa, the twelfth solar battery cell 10ab, ..., the sixteenth solar battery cell 10af. The second string 12b to the fourth string 12d are formed in the same manner. As a result, the four strings 12 are arranged in parallel in the y-axis direction. Thus, the number of the photovoltaic cells 10 arranged in the x-axis direction is larger than the number of the photovoltaic cells 10 arranged in the y-axis direction. When the x-axis direction is called “first direction”, the y-axis direction is called “second direction”. In addition, the number of the photovoltaic cells 10 included in the string 12 is not limited to “6”, and the number of the strings 12 is not limited to “4”.

ストリング１２を形成するために、第１種配線材１４は、ｘ軸方向に隣接した太陽電池セル１０のうちの一方の受光面側のフィンガー電極と、他方の裏面側のフィンガー電極とを接続する。例えば、隣接した第１１太陽電池セル１０ａａと第１２太陽電池セル１０ａｂとを接続するための５つの第１種配線材１４は、第１１太陽電池セル１０ａａの裏面側のフィンガー電極と第１２太陽電池セル１０ａｂの受光面側のフィンガー電極とを電気的に接続する。なお、第１種配線材１４の数は「５」に限定されない。第１種配線材１４は、前述のワイヤに相当する。第１種配線材１４と太陽電池セル１０との接続については後述する。図１では、第１種配線材１４を構成する樹脂シート８０（第１透明部材４０、第２透明部材４２、光反射部材５０、など）の詳細な構造の図示を省略する。   In order to form the string 12, the first type wiring member 14 connects the finger electrode on one light receiving surface side of the photovoltaic cells 10 adjacent in the x-axis direction and the finger electrode on the other back surface side. . For example, the five first-type wiring members 14 for connecting the adjacent eleventh solar cells 10aa and the twelfth solar cells 10ab are the finger electrodes on the back surface side of the eleventh solar cells 10aa and the twelfth solar cells. The finger electrode on the light receiving surface side of the cell 10ab is electrically connected. The number of first-type wiring members 14 is not limited to “5”. The first type wiring member 14 corresponds to the above-described wire. The connection between the first type wiring member 14 and the solar battery 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.) constituting the first type wiring member 14 is omitted.

第２種配線材１６は、ｙ軸方向に延びて、互いに隣接する２つのストリング１２を電気的に接続する。例えば、第１ストリング１２ａのｘ軸の正方向側端に位置する第１６太陽電池セル１０ａｆと、第２ストリング１２ｂのｘ軸の正方向側端に位置する第２６太陽電池セル１０ｂｆは、第２種配線材１６によって電気的に接続される。さらに、第２ストリング１２ｂと第３ストリング１２ｃは、ｘ軸の負方向側において第２種配線材１６によって電気的に接続されるとともに、第３ストリング１２ｃと第４ストリング１２ｄは、ｘ軸の正方向側において第２種配線材１６によって電気的に接続される。その結果、複数のストリング１２は、第２種配線材１６によって直列に接続される。第２種配線材１６のｘ軸方向の幅は、第１種配線材１４のｙ軸方向の幅よりも広いものを用いることが好ましい。   The second type wiring member 16 extends in the y-axis direction and electrically connects two strings 12 adjacent to each other. For example, the sixteenth solar cell 10af located at the positive x-direction end of the first string 12a and the twenty-sixth solar cell 10bf located at the positive x-direction end of the second string 12b are the second Electrical connection is made 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 direction side of the x axis, and the third string 12c and the fourth string 12d are positive of the x axis. Electrical connection is established by the second-type wiring material 16 on the direction side. As a result, the plurality of strings 12 are connected in series by the second type wiring material 16. The width of the second type wiring material 16 in the x-axis direction is preferably wider than the width of the first type wiring material 14 in the y-axis direction.

第１ストリング１２ａのｘ軸の負方向側端における第１１太陽電池セル１０ａａには、第２種配線材１６が接続されておらず、その代わりに第３種配線材１８が接続される。第３種配線材１８には、図示しない取出し配線材が接続される。取出し配線材は、複数の太陽電池セル１０において発電した電力を太陽電池モジュール１００外に取り出すための配線材である。なお、第３種配線材１８は、第４ストリング１２ｄのｘ軸の負方向側端における第４１太陽電池セル１０ｄａにも接続される。第３種配線材１８のｘ軸方向の幅は、第１種配線材１４のｙ軸方向の幅よりも広いものを用いることが好ましく、第２種配線材１６のｙ軸方向の幅と同程度のものを用いることが好ましい。   The second type wiring member 16 is not connected to the eleventh solar cell 10aa at the negative end of the first string 12a in the x-axis direction, and the third type wiring member 18 is connected instead. An extraction wiring material (not shown) is connected to the third type wiring material 18. The extraction wiring material is a wiring material for extracting the electric power generated in the plurality of solar cells 10 to the outside of the solar cell module 100. The third-type wiring member 18 is also connected to the forty-first solar cell 10da at the end of the fourth string 12d on the negative side of the x axis. The width of the third type wiring material 18 in the x-axis direction is preferably larger 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 one having a degree.

図２は、太陽電池モジュール１００の構造を示すｘ軸に沿った断面図であり、図１のＡ−Ａ’断面図である。太陽電池モジュール１００は、第１２太陽電池セル１０ａｂ、第１３太陽電池セル１０ａｃ、第１種配線材１４、第１保護部材３０、第１封止部材３２、第２封止部材３４、第２保護部材３６、第１透明部材４０、第２透明部材４２、第１接着剤４４、第２接着剤４６を含む。図２の上側が受光面側に相当し、下側が裏面側に相当する。   2 is a cross-sectional view taken along the x-axis showing the structure of the solar cell module 100, and is a cross-sectional view taken along the line A-A 'of FIG. The solar cell module 100 includes a twelfth solar cell 10ab, a thirteenth solar cell 10ac, a first type wiring member 14, a first protection member 30, a first sealing member 32, a second sealing member 34, and a second protection. A member 36, a first transparent member 40, a second transparent member 42, a first adhesive 44, and a 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.

第１保護部材３０は、太陽電池モジュール１００の受光面側に配置されており、太陽電池モジュール１００の表面を保護する。また、太陽電池モジュール１００は、ｘ−ｙ平面において、フレーム２０に囲まれるような矩形状を有する。第１保護部材３０には、透光性および遮水性を有するガラス、透光性プラスチック等が使用される。第１保護部材３０によって太陽電池モジュール１００の機械的強度が高くされる。   The first protection member 30 is disposed on the light receiving surface side of the solar cell module 100 and protects the surface of the solar cell module 100. 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 light-transmitting and water-blocking glass, light-transmitting plastic, or the like. The first protective member 30 increases the mechanical strength of the solar cell module 100.

第１封止部材３２は、第１保護部材３０の裏面側に積層される。第１封止部材３２は、第１保護部材３０と太陽電池セル１０との間に配置されて、これらを接着する。第１封止部材３２として、例えば、ポリオレフィン、ＥＶＡ（エチレン酢酸ビニル共重合体）、ＰＶＢ（ポリビニルブチラール）、ポリイミド等の樹脂フィルムのような、第１保護部材３０および第２保護部材３６よりも軟化温度が低い熱可塑性樹脂が使用される。なお、熱硬化性樹脂が使用されてもよい。第１封止部材３２は、透光性を有するとともに、第１保護部材３０におけるｘ−ｙ平面と略同一寸法の面を有するシート材によって形成される。   The first sealing member 32 is stacked on the back 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 adhere | attaches these. As the first sealing member 32, for example, a resin film such as polyolefin, EVA (ethylene vinyl acetate copolymer), PVB (polyvinyl butyral), polyimide, or the like, 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 translucency and having a surface having substantially the same dimensions as the xy plane in the first protection member 30.

第１２太陽電池セル１０ａｂ、第１３太陽電池セル１０ａｃは、第１保護部材３０の裏面側に積層される。各太陽電池セル１０は、ｚ軸の正方向側に受光面２２を向け、ｚ軸の負方向側に裏面２４を向けて配置される。受光面２２を「第１面」とよぶ場合、裏面２４は「第２面」とよばれる。太陽電池セル１０の受光面２２には、第１種配線材１４、第１接着剤４４、第１透明部材４０が配置され、太陽電池セル１０の裏面２４には、第１種配線材１４、第２接着剤４６、第２透明部材４２が配置される。ここでは、太陽電池セル１０に対するこれらの配置を説明するために、図３を使用する。   The twelfth solar cell 10ab and the thirteenth solar cell 10ac are stacked on the back surface side of the first protection member 30. Each photovoltaic cell 10 is arranged with the light receiving surface 22 facing the positive direction side of the z-axis and the back surface 24 facing the negative direction side of the z-axis. When the light receiving surface 22 is referred to as a “first surface”, the back surface 24 is referred to as a “second surface”. The first type wiring member 14, the first adhesive 44, and the first transparent member 40 are disposed on the light receiving surface 22 of the solar battery cell 10, and the first type wiring member 14, A second adhesive 46 and a second transparent member 42 are disposed. Here, FIG. 3 is used in order to explain these arrangements with respect to the solar battery cell 10.

図３は、太陽電池モジュール１００において使用される樹脂シート８０の斜視図である。樹脂シート８０は、第１種配線材１４、第１透明部材４０、第２透明部材４２、第１接着剤４４、第２接着剤４６、光反射部材５０と総称される第１光反射部材５０ａ、第２光反射部材５０ｂを含む。樹脂シート８０は前述のワイヤフィルムに相当する。   FIG. 3 is a perspective view of a resin sheet 80 used in the solar cell module 100. The resin sheet 80 includes a first light reflecting member 50a collectively 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. The second light reflecting member 50b is included. The resin sheet 80 corresponds to the aforementioned wire film.

第１透明部材４０は、隣接した２つの太陽電池セル１０の一方、例えば、第１３太陽電池セル１０ａｃの受光面２２側に配置される。第１透明部材４０は、例えば、ＰＥＴ（ポリエチレンテレフタラート）等の第１封止部材３２および第２封止部材３４よりも軟化温度が高い透明な樹脂フィルムで構成される。第１透明部材４０は、ｘ−ｙ平面において、太陽電池セル１０と同等サイズの四角形の形状を有する。第１透明部材４０における第１３太陽電池セル１０ａｃ側の面には第１接着剤４４が配置され、第１接着剤４４には複数の第１種配線材１４が配置され、第１透明部材４０と複数の第１種配線材１４とが接着される。第１接着剤４４は、第１３太陽電池セル１０ａｃの受光面２２を第１透明部材４０に接着可能である。第１接着剤４４には、例えば、ＥＶＡが使用される。   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 1st transparent member 40 is comprised with the transparent resin film whose softening temperature is higher than the 1st sealing member 32 and the 2nd sealing member 34, such as PET (polyethylene terephthalate), for example. The first transparent member 40 has a quadrangular shape that is the same size as the solar battery cell 10 in the xy plane. A first adhesive 44 is disposed on the surface of the first transparent member 40 on the thirteenth solar cell 10ac side, and a plurality of first-type wiring members 14 are disposed on the first adhesive 44. And the plurality of first-type wiring members 14 are bonded together. The first adhesive 44 can bond the light receiving surface 22 of the thirteenth solar battery cell 10ac to the first transparent member 40. For example, EVA is used for the first adhesive 44.

第２透明部材４２は、隣接した２つの太陽電池セル１０の他方、例えば、第１２太陽電池セル１０ａｂの裏面２４側に配置される。第２透明部材４２は、第１透明部材４０と同様に、例えば、ＰＥＴ等の透明な樹脂フィルムで構成される。第２透明部材４２は、ｘ−ｙ平面において、四角形の形状を有し、そのサイズは太陽電池セル１０よりも大きい。つまり、第１透明部材４０のサイズは第２透明部材４２のサイズよりも小さくされる。第２透明部材４２のｘ軸方向の長さは、太陽電池セル１０のｘ軸方向の長さと同等であるが、第２透明部材４２のｙ軸方向の長さは、太陽電池セル１０のｙ軸方向の長さよりも長い。第２透明部材４２におけるｙ軸方向の中央部分には、第１領域５２が配置される。第１領域５２は、太陽電池セル１０を配置すべき部分であり、ｘ−ｙ平面において、太陽電池セル１０と同等サイズの四角形の形状を有する。また、第２透明部材４２において、第１領域５２を挟むｙ軸方向の両側には、第２領域５４がそれぞれ配置される。第２領域５４は、太陽電池セル１０を非配置の部分である。   The 2nd transparent member 42 is arrange | positioned at the back surface 24 side of the other of the adjacent two photovoltaic cells 10, for example, the 12th photovoltaic cell 10ab. Similar to 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 quadrangular shape in the xy plane, and the size thereof is larger than that of the solar battery cell 10. That is, the size of the first transparent member 40 is made smaller than the size of the second transparent member 42. The length of the second transparent member 42 in the x-axis direction is the same as 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. It is longer than the axial length. The first region 52 is disposed in the center 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 disposed, and has a quadrangular shape of the same size as the solar battery cell 10 in the xy plane. In the second transparent member 42, the second regions 54 are disposed on both sides in the y-axis direction across the first region 52, respectively. The second region 54 is a portion where the solar battery cell 10 is not arranged.

さらに、第２透明部材４２における第１２太陽電池セル１０ａｂ側の面には第２接着剤４６が配置される。第１領域５２における第２接着剤４６には第１種配線材１４が配置され、第２透明部材４２と複数の第１種配線材１４とが接着される。この配置により、複数の第１種配線材１４は、第１透明部材４０と第２透明部材４２とを接続する。また、第１領域５２における第２接着剤４６は、第１２太陽電池セル１０ａｂの裏面２４を第２透明部材４２に接着可能である。一方、第２領域５４における第２接着剤４６は、第１光反射部材５０ａ、第２光反射部材５０ｂを第２透明部材４２に取り付ける。第１光反射部材５０ａ、第２光反射部材５０ｂの構成は後述する。第２接着剤４６にも、例えば、ＥＶＡが使用される。   Further, a second adhesive 46 is disposed on the surface of the second transparent member 42 on the twelfth solar battery cell 10ab side. The first type wiring member 14 is disposed in 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. 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 battery 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. For example, EVA is also used for the second adhesive 46.

このように構成された樹脂シート８０は、太陽電池モジュール１００の製造とは別に予め製造されている。太陽電池モジュール１００を製造する際、第１接着剤４４が第１３太陽電池セル１０ａｃの受光面２２に接着され、第１領域５２における第２接着剤４６が第１２太陽電池セル１０ａｂの裏面２４に接着される。このような接着により、第１種配線材１４は、第１３太陽電池セル１０ａｃの受光面２２におけるフィンガー電極（図示せず）と、第１２太陽電池セル１０ａｂの裏面２４におけるフィンガー電極（図示せず）とを電気的に接続する。図２に戻る。   The resin sheet 80 configured as described above is manufactured in advance separately from the manufacturing of the solar cell module 100. When manufacturing the solar cell module 100, the 1st adhesive agent 44 is adhere | attached on the light-receiving surface 22 of 13th photovoltaic cell 10ac, and the 2nd adhesive agent 46 in 1st area | region 52 is attached to the back surface 24 of 12th photovoltaic cell 10ab. Glued. By such adhesion, the first-type wiring member 14 is provided with finger electrodes (not shown) on the light receiving surface 22 of the thirteenth solar cell 10ac and finger electrodes (not shown) on the back surface 24 of the twelfth solar cell 10ab. Are electrically connected to each other. Returning to FIG.

第１透明部材４０と第２透明部材４２の接着が、他の太陽電池セル１０に対してもなされることによって、図１に示すようなストリング１２が形成される。第２封止部材３４は、第１封止部材３２の裏面側に積層される。第２封止部材３４は、第１封止部材３２との間で、複数の太陽電池セル１０、第１種配線材１４、第２種配線材１６、第３種配線材１８、第１透明部材４０、第２透明部材４２等を封止する。第２封止部材３４には、第１封止部材３２と同様のものを用いることができる。また、ラミネート・キュア工程における加熱によって、第２封止部材３４は第１封止部材３２と一体化されていてもよい。   The first transparent member 40 and the second transparent member 42 are bonded to the other solar cells 10 to form the string 12 as shown in FIG. The second sealing member 34 is stacked on the back side of the first sealing member 32. Between the second sealing member 34 and the first sealing member 32, the plurality of solar cells 10, the first type wiring material 14, the second type wiring material 16, the third type wiring material 18, and the first transparent member. The member 40, the second transparent member 42, and the like are sealed. The same material as the first sealing member 32 can be used for the second sealing member 34. Further, the second sealing member 34 may be integrated with the first sealing member 32 by heating in the laminating and curing process.

第２保護部材３６は、第１保護部材３０に対向するように、第２封止部材３４の裏面側に積層される。第２保護部材３６は、バックシートとして太陽電池モジュール１００の裏面側を保護する。第２保護部材３６としては、ＰＥＴ、ＰＴＦＥ（ポリテトラフルオロエチレン)等の樹脂フィルム、Ａｌ箔をポリオレフィン等の樹脂フィルムで挟んだ構造を有する積層フィルムなどが使用される。   The second protection member 36 is stacked on the back surface side of the second sealing member 34 so as to face the first protection member 30. The 2nd 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, or the like is used.

図４は、太陽電池モジュール１００の構造を示す別の断面図である。これは、太陽電池モジュール１００のｙ軸に沿った断面図であり、図１のＢ−Ｂ’断面図である。各太陽電池セル１０の受光面２２側には第１透明部材４０が配置され、各太陽電池セル１０の裏面２４側には第２透明部材４２が配置される。つまり、互いに対向した第１透明部材４０と第２透明部材４２は、１つの太陽電池セル１０を挟み込む。ここで、第１透明部材４０のうちの太陽電池セル１０側の面には、第１接着剤４４、第１種配線材１４が配置され、第２透明部材４２のうちの太陽電池セル１０側の面には、第２接着剤４６、第１種配線材１４が配置される。   FIG. 4 is another cross-sectional view showing the structure of the solar cell module 100. This is a cross-sectional view along the y-axis of the solar cell module 100, and is a cross-sectional view taken along the line B-B 'of FIG. A first transparent member 40 is disposed on the light receiving surface 22 side of each solar cell 10, and a second transparent member 42 is disposed 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. The second adhesive 46 and the first type wiring member 14 are disposed on the surface.

各太陽電池セル１０において、第２透明部材４２と第２接着剤４６は、太陽電池セル１０からｙ軸の正方向側および負方向側に突出する。ｙ軸の正方向側に突出した部分において、第２接着剤４６のｚ軸の正方向側に第１光反射部材５０ａが配置される。一方、ｙ軸の負方向側に突出した部分において、第２接着剤４６のｚ軸の正方向側に第２光反射部材５０ｂが配置される。つまり、第１光反射部材５０ａと第２光反射部材５０ｂは、第２透明部材４２において、太陽電池セル１０を配置した部分を挟むｙ軸方向の両側に配置される。このような第１光反射部材５０ａと第２光反射部材５０ｂの配置は、ｙ軸方向に並んだ第１２太陽電池セル１０ａｂ、第２２太陽電池セル１０ｂｂ、第３２太陽電池セル１０ｃｂ、第４２太陽電池セル１０ｄｂのそれぞれに対してなされる。   In each solar cell 10, the second transparent member 42 and the second adhesive 46 protrude from the solar cell 10 to the positive direction side and the negative direction side of the y axis. The first light reflecting member 50a is disposed on the positive direction side of the z-axis of the second adhesive 46 in the portion protruding to the positive direction side of the y-axis. On the other hand, the second light reflecting member 50b is disposed on the positive side of the z-axis of the second adhesive 46 in the portion protruding in the negative direction of the y-axis. That is, the 1st light reflection member 50a and the 2nd light reflection member 50b are arrange | positioned in the 2nd transparent member 42 on the both sides of the y-axis direction on both sides of the part which has arrange | positioned the photovoltaic cell 10. As shown in FIG. The arrangement of the first light reflecting member 50a and the second light reflecting member 50b is such that the twelfth solar cell 10ab, the twenty-second solar cell 10bb, the thirty-second solar cell 10cb, and the forty-second solar are aligned in the y-axis direction. It is made for each of the battery cells 10db.

そのため、第１光反射部材５０ａと第２光反射部材５０ｂは、隣接した２つ太陽電池セル１０、例えば、第１２太陽電池セル１０ａｂと第２２太陽電池セル１０ｂｂとの間の隙間に張り出すような位置に配置される。具体的には、第１２太陽電池セル１０ａｂのｙ軸の負方向側に配置された第２光反射部材５０ｂと、第２２太陽電池セル１０ｂｂのｙ軸の正方向側に配置された第１光反射部材５０ａとが、第１２太陽電池セル１０ａｂと第２２太陽電池セル１０ｂｂとの間に配置される。また、図１に示したように、第１２太陽電池セル１０ａｂはｘ軸方向に延びる第１ストリング１２ａに含まれ、第２２太陽電池セル１０ｂｂはｘ軸方向に延びる第２ストリング１２ｂに含まれる。さらに、図３に示したように第１光反射部材５０ａ、第２光反射部材５０ｂはｘ軸方向にも延びる。そのため、第１光反射部材５０ａと第２光反射部材５０ｂは、隣接した２つのストリング１２の間の隙間に張り出すような位置に配置されるともいえる。   Therefore, the first light reflecting member 50a and the second light reflecting member 50b are projected to the gap between two adjacent solar cells 10, for example, the twelfth solar cell 10ab and the twenty-second solar cell 10bb. It is arranged in the position. Specifically, the second light reflecting member 50b disposed on the negative direction side of the y-axis of the twelfth solar battery cell 10ab and the first light disposed on the positive direction side of the y-axis of the twenty-second solar battery cell 10bb. The reflection member 50a is disposed 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. Furthermore, as shown in FIG. 3, the first light reflecting member 50a and the second light reflecting member 50b also extend in the x-axis direction. Therefore, it can be said that the first light reflecting member 50 a and the second light reflecting member 50 b are arranged at positions that project into the gap between the two adjacent strings 12.

ここでは、対向する第１光反射部材５０ａと第２光反射部材５０ｂが、互いに重なることなく隙間を覆うように互いの端部側面が接するように配置されている。しかしながら、対向する第１光反射部材５０ａと第２光反射部材５０ｂは、一部同士が重なるように配置されてもよい。その場合、第１光反射部材５０ａの先端部分と第２光反射部材５０ｂの先端部分がｚ軸方向に重なる。以下では、図５を使用しながら、第１光反射部材５０ａと第２光反射部材５０ｂの構成を説明する。   Here, the first light reflecting member 50a and the second light reflecting member 50b facing each other are arranged so that the end side surfaces thereof are in contact with each other so as to cover the gap without overlapping each other. However, the first light reflecting member 50a and the second light reflecting member 50b that face each other may be arranged so as to partially overlap each other. 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. Below, the structure of the 1st light reflection member 50a and the 2nd light reflection member 50b is demonstrated, using FIG.

図５は、第２透明部材４２の構成を示す断面図である。これは、図４と同一方向の断面図である。第２透明部材４２には、第１種配線材１４、第２接着剤４６、光反射部材５０と総称される第１光反射部材５０ａ、第２光反射部材５０ｂが配置される。光反射部材５０は、樹脂基材５６、反射膜５８を含む。   FIG. 5 is a cross-sectional view showing the configuration of the second transparent member 42. This is a cross-sectional view in the same direction as FIG. In the second transparent member 42, the first type wiring member 14, the second adhesive 46, and the first light reflecting member 50 a and the second light reflecting member 50 b collectively called the light reflecting member 50 are arranged. The light reflecting member 50 includes a resin base material 56 and a reflective film 58.

第２透明部材４２は、ｙ軸方向の中央部分に第１領域５２を配置するとともに、ｙ軸方向の両端部分のそれぞれに第２領域５４を配置する。第１領域５２において第２透明部材４２のｚ軸の正方向側には第２接着剤４６が配置され、第２接着剤４６のｚ軸の正方向側には複数の第１種配線材１４が配置される。一方、第２領域５４において第２透明部材４２のｚ軸の正方向側には第２接着剤４６が配置され、第２接着剤４６のｚ軸の正方向側には第１光反射部材５０ａ、第２光反射部材５０ｂが配置される。前述のごとく、第１光反射部材５０ａと第２光反射部材５０ｂは同一の形状を有するので、以下では光反射部材５０として説明する。   The second transparent member 42 arranges the first region 52 in the central portion in the y-axis direction, and arranges the second regions 54 in both end portions in the y-axis direction. In the first region 52, the second adhesive 46 is disposed on the positive side of the second transparent member 42 in the z-axis, and the plurality of first-type wiring members 14 are disposed on the positive side of the second adhesive 46 in the z-axis. Is 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, and the first light reflecting member 50a is disposed on the positive side of the second adhesive 46 in the z-axis. The second light reflecting member 50b is disposed. 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.

光反射部材５０は、樹脂基材５６と、樹脂基材５６の表面に形成された反射膜５８とを有する。樹脂基材５６は、例えば、ＰＥＴまたはアクリル等によって構成される。また、反射膜５８は、例えば、アルミニウムまたは銀等の金属からなる金属膜であり、ここでは、アルミニウム蒸着膜である。樹脂基材５６の表面には、ｙ−ｚ平面において略三角形形状の断面を有した突起がｙ軸方向に複数並べられる。この突起はｘ軸方向に延びるので、樹脂基材５６は、ｙ−ｚ平面に底面を有してｘ軸方向に延びる略三角柱がｙ軸方向に複数並べられた形状を有する。これは、ｘ軸方向に延びる三角溝形状がｙ軸方向に複数並べられることに相当する。また、樹脂基材５６の表面の形状と同様に、反射膜５８が形成される。このように、樹脂基材５６と反射膜５８とが積層され、表面に複数の突起を備えた光反射部材５０が構成される。   The light reflecting member 50 includes a resin base material 56 and a reflective film 58 formed on the surface of the resin base material 56. The resin substrate 56 is made of, for example, PET or acrylic. The reflective film 58 is 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 base material 56, a plurality of protrusions having a substantially triangular cross section in the yz plane are arranged in the y-axis direction. Since this 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 a plurality of triangular groove shapes extending in the x-axis direction being arranged in the y-axis direction. Further, the reflective film 58 is formed in the same manner as the shape of the surface of the resin base material 56. Thus, the resin base material 56 and the reflective film 58 are laminated | stacked, and the light reflection member 50 provided with several protrusion on the surface is comprised.

複数の突起は、太陽電池モジュール１００に入射し、かつ隣接した太陽電池セル１０の隙間を通り抜けた太陽光を散乱させて、第１保護部材３０と空気層との界面、あるいは第１保護部材３０と第１封止部材３２との界面で反射させる。このような反射により、太陽光は、太陽電池セル１０へと導かれる。樹脂基材５６の厚さは、例えば５０μｍ〜５００μｍである。突起と溝部との間の高さが５μｍ以上かつ１００μｍ以下であり、隣接した突起の間隔（ピッチ）が２０μｍ以上かつ４００μｍ以下である。ここでは、突起と溝部の間の高さが１２μｍであり、隣接した突起の間隔（ピッチ）が４０μｍである。なお、光反射部材５０は、ｘ軸方向に延びる三角溝形状がｙ軸方向に並べられているとしたが、これに限定されるものではなく、太陽光を散乱させることができるものであれば、円錐形状、四角錐形状、多角錐形状、あるいはこれらの形状の組合せであってもよい。   The plurality of protrusions are incident on the solar cell module 100 and scatter the sunlight that has passed through the gaps between the adjacent solar cells 10, so that the interface between the first protection member 30 and the air layer, or the first protection member 30. And reflected at the interface between the first sealing member 32 and the first sealing member 32. Due to such reflection, 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 adjacent protrusions is 40 μm. In addition, although the light reflection member 50 assumed that the triangular groove shape extended in an x-axis direction was arranged in the y-axis direction, it is not limited to this, If it can scatter sunlight , A cone shape, a quadrangular pyramid shape, a polygonal pyramid shape, or a combination of these shapes.

これまでは、第２透明部材４２に光反射部材５０が配置される。一方、第２透明部材４２ではなく、第１透明部材４０に光反射部材５０が配置されてもよい。ここでは、図６を使用しながら、そのような構成を説明する。図６は、第１透明部材４０の別の構成を示す断面図である。これは、図４、図５と同一方向の断面図である。第１透明部材４０には、第１種配線材１４、第１接着剤４４、光反射部材５０と総称される第１光反射部材５０ａ、第２光反射部材５０ｂが配置される。光反射部材５０は、樹脂基材５６、反射膜５８、接着剤６０を含む。   Until now, the light reflecting member 50 is disposed on the second transparent member 42. On the other hand, the light reflecting member 50 may be disposed not on the second transparent member 42 but on the first transparent member 40. 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. The first transparent member 40 includes the first type wiring member 14, the first adhesive 44, and the first light reflecting member 50 a and the second light reflecting member 50 b that are collectively referred to as the light reflecting member 50. The light reflecting member 50 includes a resin base material 56, a reflective film 58, and an adhesive 60.

第１透明部材４０は、ｙ軸方向の中央部分に第１領域５２を配置するとともに、ｙ軸方向の両端部分のそれぞれに第２領域５４を配置する。第１領域５２において第１透明部材４０のｚ軸の負方向側には第１接着剤４４が配置され、第１接着剤４４のｚ軸の負方向側には複数の第１種配線材１４が配置される。一方、第２領域５４において第１透明部材４０のｚ軸の負方向側には第１接着剤４４が配置され、第１接着剤４４のｚ軸の負方向側には第１光反射部材５０ａ、第２光反射部材５０ｂが配置される。ここでも、第１光反射部材５０ａと第２光反射部材５０ｂは同一の形状を有するので、以下では光反射部材５０として説明する。   In the first transparent member 40, the first region 52 is disposed at the central portion in the y-axis direction, and the second regions 54 are disposed at both end portions in the y-axis direction. In the first region 52, the first adhesive 44 is disposed on the negative direction side of the first transparent member 40 in the z axis, and the plurality of first-type wiring members 14 are disposed on the negative direction side of the first adhesive 44 in the z axis. Is placed. On the other hand, in the second region 54, the first adhesive 44 is disposed on the negative direction side of the first transparent member 40 in the z axis, and the first light reflecting member 50a is disposed on the negative direction side of the first adhesive 44 in the z axis. The second light reflecting member 50b is disposed. Also here, 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.

光反射部材５０は、樹脂基材５６と、樹脂基材５６の表面に形成された反射膜５８と、接着剤６０を有する。樹脂基材５６、反射膜５８はこれまでと同様に構成されるが、ｚ軸方向の向きがこれまでとは反対向きに配置される。樹脂基材５６のｚ軸の正方向側には接着剤６０が配置される。接着剤６０は、第１接着剤４４と同様に形成され、第１接着剤４４に接着される。このような構成における光反射部材５０の複数の突起も、太陽電池モジュール１００に入射し、かつ隣接した太陽電池セル１０の隙間を通り抜けた太陽光を散乱させて、第１保護部材３０と空気層との界面、あるいは第１保護部材３０と第１封止部材３２との界面で反射させる。このような反射により、太陽光は、太陽電池セル１０へと導かれる。   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. Although the resin base material 56 and the reflective film 58 are configured in the same manner as before, the orientation in the z-axis direction is arranged in the opposite direction. An adhesive 60 is disposed on the positive side of the z-axis of the resin base material 56. The adhesive 60 is formed in the same manner as the first adhesive 44 and is bonded to the first adhesive 44. The plurality of protrusions of the light reflecting member 50 having such a configuration also enter the solar cell module 100 and scatter the sunlight passing through the gaps between the adjacent solar cells 10, and the first protective member 30 and the air layer. Or at the interface between the first protective member 30 and the first sealing member 32. Due to such reflection, sunlight is guided to the solar battery cell 10.

以下では、太陽電池モジュール１００の製造方法について説明する。まず、第２透明部材４２に光反射部材５０が配置された樹脂シート８０が用意される。隣接した２つの太陽電池セル１０の一方に樹脂シート８０の第１透明部材４０を重ね合せるとともに、隣接した２つの太陽電池セル１０の他方に樹脂シート８０の第２透明部材４２を重ね合わせることによって、ストリング１２が生成される。ｚ軸の正方向から負方向に向かって、第１保護部材３０、第１封止部材３２、ストリング１２、第２封止部材３４、第２保護部材３６が順に重ね合わせられることによって、積層体が生成される。これに続いて、積層体に対して、ラミネート・キュア工程がなされる。この工程では、積層体から空気を抜き、加熱、加圧して、積層体を一体化する。ラミネート・キュア工程における真空ラミネートでは、温度が前述のごとく、５０〜１４０℃程度に設定される。さらに、第２保護部材３６に対して、端子ボックスが接着剤にて取り付けられる。   Below, the manufacturing method of the solar cell module 100 is demonstrated. First, a resin sheet 80 in which the light reflecting member 50 is disposed 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 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 of the z axis toward the negative direction. Is generated. Following this, a laminate curing process is performed on the laminate. In this step, air is extracted from the laminated body, and heated and pressurized to integrate the laminated body. In vacuum laminating in the laminating and curing process, the temperature is set to about 50 to 140 ° C. as described above. Furthermore, a terminal box is attached to the second protective member 36 with an adhesive.

本実施例によれば、第２透明部材４２は、太陽電池セル１０を非配置の部分に光反射部材５０を配置するので、隣接した２つの太陽電池セル１０の間に入射する太陽光を反射することができる。また、隣接した２つの太陽電池セル１０の間に入射する太陽光が反射されるので、隣接した２つの太陽電池セル１０の間に入射する太陽光を発電に有効に寄与させることができる。また、隣接した２つの太陽電池セル１０の間に入射する太陽光を発電に有効に寄与させるので、太陽電池モジュール１００の変換効率を向上できる。   According to the present embodiment, the second transparent member 42 arranges the light reflecting member 50 in the portion where the solar battery cell 10 is not arranged, and therefore reflects the sunlight incident between the two adjacent solar battery cells 10. can do. Moreover, since the sunlight which injects between the two adjacent photovoltaic cells 10 is reflected, the sunlight which enters between the two adjacent solar cells 10 can be effectively contributed to power generation. Moreover, since the sunlight which injects between the two adjacent photovoltaic cells 10 contributes effectively to electric power generation, the conversion efficiency of the solar cell module 100 can be improved.

また、第２透明部材４２に光反射部材５０を配置させた樹脂シート８０を使用するので、第１透明部材４０と第２透明部材４２とを隣接した２つの太陽電池セル１０に貼り付けるだけでストリング１２を生成できる。また、第１透明部材４０と第２透明部材４２とを隣接した２つの太陽電池セル１０に貼り付けるだけでストリング１２が生成されるので、太陽電池モジュール１００の製造の複雑化を抑制できる。また、第２透明部材４２に光反射部材５０を配置させた樹脂シート８０を使用するので、太陽電池モジュール１００の製造の複雑化を抑制しながら、太陽電池モジュール１００の変換効率を向上できる。   In addition, since the resin sheet 80 in which the light reflecting member 50 is disposed on the second transparent member 42 is used, the first transparent member 40 and the second transparent member 42 are simply attached to the two adjacent solar cells 10. A string 12 can be generated. Moreover, since the string 12 is produced | generated only by sticking the 1st transparent member 40 and the 2nd transparent member 42 to the two adjacent photovoltaic cells 10, the complexity of manufacture of the solar cell module 100 can be suppressed. Moreover, since the resin sheet 80 in which the light reflecting member 50 is disposed on the second transparent member 42 is used, the conversion efficiency of the solar cell module 100 can be improved while suppressing the manufacturing complexity of the solar cell module 100.

また、第２透明部材４２の代わりに第１透明部材４０が、太陽電池セル１０を非配置の部分に光反射部材５０を配置してもよいので、構成の自由度を向上できる。また、２つの太陽電池セル１０の一方の受光面２２側と第１透明部材４０との間に第１種配線材１４が配置されるとともに、２つの太陽電池セル１０の他方の裏面２４側と第２透明部材４２との間にも第１種配線材１４が配置されるので、樹脂シート８０を使用できる。また、樹脂シート８０が使用されるので、製造を簡易にできる。   Moreover, since the 1st transparent member 40 may arrange | position the light reflection member 50 in the part which does not arrange | position the photovoltaic cell 10 instead of the 2nd transparent member 42, the freedom degree of a structure can be improved. In addition, the first type wiring member 14 is disposed between the one light receiving surface 22 side of the two solar cells 10 and the first transparent member 40, and the other back surface 24 side of the two solar cells 10, Since the 1st type wiring material 14 is arrange | positioned also between the 2nd transparent members 42, the resin sheet 80 can be used. Moreover, since the resin sheet 80 is used, manufacture can be simplified.

また、第２透明部材４２は、太陽電池セル１０を配置した部分を挟むように、第１種配線材１４が延びる方向とは異なった方向の両側に光反射部材５０を配置するので、隣接した２つのストリング１２の間の隙間に入射した太陽光を反射できる。また、第２透明部材４２の代わりに第１透明部材４０が、太陽電池セル１０を配置した部分を挟むように、第１種配線材１４が延びる方向とは異なった方向の両側に光反射部材５０を配置してもよいので、構成の自由度を向上できる。また、第１透明部材４０のサイズは第２透明部材４２のサイズよりも小さいので、第１保護部材３０から入射した太陽光を透過させる際の損失を低減できる。また、第１保護部材３０から入射した太陽光を透過させる際の損失が低減されるので、太陽電池モジュール１００の変換効率を向上できる。   Moreover, since the 2nd transparent member 42 has arrange | positioned the light reflection member 50 on the both sides of the direction different from the direction where the 1st type wiring material 14 is extended so that the part which has arrange | positioned the photovoltaic cell 10 may be pinched | interposed, it adjoined. 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 has light reflecting members 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 cells 10 are arranged. Since 50 may be arranged, the degree of freedom of configuration can be improved. Moreover, since the size of the 1st transparent member 40 is smaller than the size of the 2nd transparent member 42, the loss at the time of permeate | transmitting the sunlight which injected from the 1st protective member 30 can be reduced. Moreover, since the loss at the time of permeate | transmitting the sunlight which injected from the 1st protection member 30 is reduced, the conversion efficiency of the solar cell module 100 can be improved.

また、太陽電池セル１０を配置した部分を挟むように第１種配線材１４が延びる方向とは異なった方向の両側に光反射部材５０を設けた樹脂シート８０を用いるので、第１ストリング１２ａから第４ストリング１２ｄにて同じ構成の樹脂シート８０を使用できる。また、第１ストリング１２ａから第４ストリング１２ｄにて同じ構成の樹脂シート８０が使用されるので、太陽電池モジュール１００の材料コストを低減できる。   Moreover, since the resin sheet 80 which provided the light reflection member 50 in the both sides of the direction different from the direction where the 1st type wiring material 14 extends so that the part which has arrange | positioned the photovoltaic cell 10 may be used, from the 1st string 12a The resin sheet 80 having the same configuration can be used in 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.

本発明の一態様の概要は、次の通りである。本発明のある態様の太陽電池モジュール１００は、第１方向に並んで配置された複数の太陽電池セル１０と、複数の太陽電池セル１０を接続する複数の第１種配線材１４と、複数の太陽電池セル１０のそれぞれの受光面２２側に配置され、複数の第１種配線材１４に接着される複数の第１透明部材４０と、複数の太陽電池セル１０のそれぞれの裏面２４側に配置され、複数の第１種配線材１４に接着される複数の第２透明部材４２とを備える。複数の第１透明部材４０と複数の第２透明部材４２のうち、互いに対向した第１透明部材４０と第２透明部材４２は、１つの太陽電池セル１０を挟み込み、複数の第１透明部材４０と複数の第２透明部材４２の少なくとも一方は、太陽電池セル１０を非配置の部分に光反射部材５０を配置する。   The outline of one embodiment of the present invention is as follows. The solar cell module 100 according to an aspect of the present invention includes a plurality of solar cells 10 arranged in the first direction, a plurality of first type wiring members 14 connecting the plurality of solar cells 10, and a plurality of solar cells 10. The plurality of first transparent members 40 disposed on the respective light receiving surfaces 22 of the solar cells 10 and bonded to the plurality of first-type wiring members 14 and the respective rear surfaces 24 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. Among 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 has the light reflecting member 50 disposed in a portion where the solar battery cell 10 is not disposed.

複数の太陽電池セル１０は、第１方向に交差した第２方向にも並べられ、複数の第１透明部材４０と複数の第２透明部材４２の少なくとも一方は、太陽電池セル１０を配置した部分を挟む第２方向の両側に光反射部材５０を配置してもよい。   The plurality of solar cells 10 are also 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 disposed on both sides in the second direction across the gap.

複数の第１透明部材４０のそれぞれのサイズは、複数の第２透明部材４２のそれぞれよりのサイズよりも小さい。   Each size of the plurality of first transparent members 40 is smaller than each size of the plurality of second transparent members 42.

第１透明部材４０の受光面２２側に設けられる第１保護部材３０と、第１透明部材４０の受光面２２側であって、第１透明部材４０と第１保護部材３０との間に設けられる第１封止部材３２と、第２透明部材４２の裏面２４側に設けられる第２保護部材３６と、第２透明部材４２の裏面２４側であって、第２透明部材４２と第２保護部材３６との間に設けられる第２封止部材３４と、をさらに備えてもよい。第１封止部材３２および第２封止部材３４は、第１保護部材３０および第２保護部材３６よりも軟化温度が低い。   The first protective member 30 provided on the light receiving surface 22 side of the first transparent member 40 and the light receiving surface 22 side of the first transparent member 40 provided between the first transparent member 40 and the first protective member 30. 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, the second transparent member 42 and the second protection. A second sealing member 34 provided between the member 36 and the member 36 may be further provided. The first sealing member 32 and the second sealing member 34 have a softening temperature lower than that of the first protection member 30 and the second protection member 36.

複数の第１透明部材４０および複数の第２透明部材４２は、第１封止部材３２および第２封止部材３４よりも軟化温度が高い。   The plurality of first transparent members 40 and the plurality of second transparent members 42 have higher softening temperatures than the first sealing member 32 and the second sealing member 34.

本発明の別の態様は、樹脂シート８０である。この樹脂シート８０は、隣接した２つの太陽電池セル１０の一方の受光面２２側に配置すべき第１透明部材４０と、隣接した２つの太陽電池セル１０の他方の裏面２４側に配置すべき第２透明部材４２と、第１透明部材４０と第２透明部材４２とを接続する第１種配線材１４とを備える。第１種配線材１４は、第１透明部材４０における太陽電池セル１０側の面に配置されるとともに、第２透明部材４２における太陽電池セル１０側の面に配置され、第１透明部材４０と第２透明部材４２の少なくとも一方は、太陽電池セル１０側の面のうち、太陽電池セル１０を非配置の部分に光反射部材５０を配置する。   Another aspect of the present invention is a resin sheet 80. The resin sheet 80 should be disposed on the first light-receiving surface 22 side of the two adjacent solar cells 10 and on the other back surface 24 side of the two adjacent solar cells 10. The 2nd transparent member 42 and the 1st type wiring material 14 which connects the 1st transparent member 40 and the 2nd transparent member 42 are provided. The first type wiring member 14 is disposed on the surface of the first transparent member 40 on the solar cell 10 side, and is disposed on the surface of the second transparent member 42 on the solar cell 10 side. At least one of the 2nd transparent members 42 arrange | positions the light reflection member 50 in the part by which the photovoltaic cell 10 is not arrange | positioned among the surfaces at the side of the photovoltaic cell 10. FIG.

（実施例２）
次に、実施例２を説明する。実施例２は、実施例１と同様に、光反射部材が予め配置された樹脂シートの透明部材を太陽電池セルに貼り付けることによって形成したストリングを含む太陽電池モジュールに関する。実施例１では、第１透明部材あるいは第２透明部材の第１領域を挟んだ両側に第１光反射部材と第２光反射部材が配置される。一方、実施例２では、第１透明部材あるいは第２透明部材の第１領域の一方向側だけに光反射部材が配置される。実施例２に係る太陽電池モジュール１００は、図１、図２と同様のタイプである。ここでは、これまでとの差異を中心に説明する。 (Example 2)
Next, Example 2 will be described. Example 2 is related 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 Example 1. In Example 1, a 1st light reflection member and a 2nd light reflection member are arrange | positioned on both sides which pinched | interposed the 1st area | region of the 1st transparent member or the 2nd transparent member. On the other hand, in Example 2, the light reflecting member is disposed only in one direction of the first region of the first transparent member or the second transparent member. The solar cell module 100 according to Example 2 is the same type as that shown in FIGS. Here, it demonstrates centering on the difference from before.

図７は、太陽電池モジュール１００において使用される樹脂シート８０の斜視図である。これは、図３と同様に示される。樹脂シート８０は、第１種配線材１４、第１透明部材４０、第２透明部材４２、第１接着剤４４、第２接着剤４６、光反射部材５０を含む。第１透明部材４０は、隣接した２つの太陽電池セル１０の一方、例えば、図２の第１３太陽電池セル１０ａｃの受光面２２側に配置される。第１透明部材４０は、ｘ−ｙ平面において、太陽電池セル１０と同等サイズの四角形の形状を有する。第１透明部材４０における第１３太陽電池セル１０ａｃ側の面には第１接着剤４４が配置され、第１接着剤４４には複数の第１種配線材１４が配置される。   FIG. 7 is a perspective view of a 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 side 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 that is the same size as the solar battery cell 10 in the xy plane. A first adhesive 44 is disposed on the surface of the first transparent member 40 on the thirteenth solar cell 10ac side, and a plurality of first-type wiring members 14 are disposed on the first adhesive 44.

第２透明部材４２は、隣接した２つの太陽電池セル１０の他方、例えば、図２の第１２太陽電池セル１０ａｂの裏面２４側に配置される。第２透明部材４２は、ｘ−ｙ平面において、四角形の形状を有し、そのサイズは太陽電池セル１０よりも大きい。第２透明部材４２のｘ軸方向の長さは、太陽電池セル１０のｘ軸方向の長さと同等であるが、第２透明部材４２のｙ軸方向の長さは、太陽電池セル１０のｙ軸方向の長さよりも長い。第２透明部材４２におけるｙ軸の正方向側には第１領域５２が配置され、第２透明部材４２におけるｙ軸の負方向側には第２領域５４が配置される。さらに、第２透明部材４２における第１２太陽電池セル１０ａｂ側の面には第２接着剤４６が配置される。第１領域５２における第２接着剤４６には第１種配線材１４が配置され、第２領域５４における第２接着剤４６には光反射部材５０が配置される。   The 2nd transparent member 42 is arrange | positioned at the back surface 24 side of the other of the adjacent two photovoltaic cells 10, for example, the 12th photovoltaic cell 10ab of FIG. The second transparent member 42 has a quadrangular shape in the xy plane, and the size thereof is larger than that of the solar battery cell 10. The length of the second transparent member 42 in the x-axis direction is the same as 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. It is longer than the axial length. The first region 52 is disposed on the positive side of the second transparent member 42 in the y axis, and the second region 54 is disposed on the negative direction side of the second transparent member 42 in the y axis. Further, a second adhesive 46 is disposed on the surface of the second transparent member 42 on the twelfth solar battery cell 10ab side. The first type wiring member 14 is disposed on the second adhesive 46 in the first region 52, and the light reflecting member 50 is disposed on the second adhesive 46 in the second region 54.

図８は、本発明の実施例２に係る太陽電池モジュール１００の構造を示す断面図である。これは、図４と同様に示される。第２２太陽電池セル１０ｂｂ、第３２太陽電池セル１０ｃｂ、第４２太陽電池セル１０ｄｂにおいて、第２透明部材４２と第２接着剤４６は、太陽電池セル１０からｙ軸の負方向側に突出する。ｙ軸の負方向側に突出した部分において、第２接着剤４６のｚ軸の正方向側に光反射部材５０が配置される。つまり、光反射部材５０は、第２透明部材４２において、太陽電池セル１０を配置した部分に対してｙ軸方向の片側に配置される。   FIG. 8 is a cross-sectional view showing the structure of the solar cell module 100 according to Example 2 of the present invention. This is shown as in FIG. In the twenty-second solar cell 10bb, the thirty-second solar cell 10cb, and the forty-second solar cell 10db, the second transparent member 42 and the second adhesive 46 protrude from the solar cell 10 toward the negative direction 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 at the portion protruding in the negative direction of the y-axis. That is, the light reflecting member 50 is disposed on one side in the y-axis direction with respect to the portion where the solar battery cell 10 is disposed in the second transparent member 42.

一方、第１２太陽電池セル１０ａｂにおいて、第２透明部材４２と第２接着剤４６は、太陽電池セル１０からｙ軸の負方向側に突出するとともに、正方向側にも突出する。ｙ軸の負方向側と正方向側のそれぞれに突出した部分において、第２接着剤４６のｚ軸の正方向側に光反射部材５０が配置される。なお、第１２太陽電池セル１０ａｂにおいて、第２透明部材４２と第２接着剤４６はｙ軸の正方向側に突出せず、そこに光反射部材５０が配置されなくてもよい。   On the other hand, in the twelfth solar battery cell 10ab, the second transparent member 42 and the second adhesive 46 protrude from the solar battery cell 10 to the negative direction side of the y axis and also to the positive direction side. The light reflecting member 50 is disposed on the positive direction side of the z-axis of the second adhesive 46 in the portions protruding to the negative direction side and the positive direction 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 on the positive direction side of the y axis, and the light reflecting member 50 may not be disposed there.

光反射部材５０は、隣接した２つ太陽電池セル１０、例えば、第１２太陽電池セル１０ａｂと第２２太陽電池セル１０ｂｂとの間の隙間に張り出すような位置に配置される。具体的には、第１２太陽電池セル１０ａｂのｙ軸の負方向側に配置された光反射部材５０が、第１２太陽電池セル１０ａｂと第２２太陽電池セル１０ｂｂとの間に配置される。また、図１に示したように、第１２太陽電池セル１０ａｂはｘ軸方向に延びる第１ストリング１２ａに含まれ、第２２太陽電池セル１０ｂｂはｘ軸方向に延びる第２ストリング１２ｂに含まれる。さらに、図７に示したように光反射部材５０はｘ軸方向にも延びる。そのため、光反射部材５０は、隣接した２つのストリング１２の間の隙間に張り出すような位置に配置されるともいえる。   The light reflecting member 50 is disposed at a position that protrudes into a gap between two adjacent solar cells 10, for example, a twelfth solar cell 10ab and a twenty-second solar cell 10bb. Specifically, the light reflecting member 50 arranged on the negative direction side of the y-axis of the twelfth solar cell 10ab is arranged between the twelfth solar cell 10ab and the twenty-second solar 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. Furthermore, 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 disposed at a position that protrudes into a gap between two adjacent strings 12.

図９（ａ）−（ｂ）は、第２透明部材４２の構成を示す断面図である。これらは、図５と同様に示される。図９（ａ）において第２透明部材４２には、第１種配線材１４、第２接着剤４６、光反射部材５０が配置される。光反射部材５０は、樹脂基材５６、反射膜５８を含む。   FIGS. 9A and 9B are cross-sectional views illustrating the configuration of the second transparent member 42. These are shown as in FIG. In FIG. 9A, the first transparent wiring member 14, the second adhesive 46, and the light reflecting member 50 are disposed on the second transparent member 42. The light reflecting member 50 includes a resin base material 56 and a reflective film 58.

第２透明部材４２は、ｙ軸の正方向側に第１領域５２を配置するとともに、ｙ軸の負方向側に第２領域５４を配置する。第１領域５２において第２透明部材４２のｚ軸の正方向側には第２接着剤４６が配置され、第２接着剤４６のｚ軸の正方向側には複数の第１種配線材１４が配置される。一方、第２領域５４において第２透明部材４２のｚ軸の正方向側には第２接着剤４６が配置され、第２接着剤４６のｚ軸の正方向側には光反射部材５０が配置される。このような構成のため、第２領域５４のｙ軸方向の幅は、実施例１における１つの第２領域５４のｙ軸方向の幅よりも大きく、例えば２倍である。   The second transparent member 42 arranges the first region 52 on the positive direction side of the y axis and the second region 54 on the negative direction side of the y axis. In the first region 52, the second adhesive 46 is disposed on the positive side of the second transparent member 42 in the z-axis, and the plurality of first-type wiring members 14 are disposed on the positive side of the second adhesive 46 in the z-axis. Is placed. On the other hand, in the second region 54, the second adhesive 46 is disposed on the positive direction side of the second transparent member 42 in the z axis, and the light reflecting member 50 is disposed on the positive direction side of the second adhesive 46 in the z axis. Is done. Due to such a configuration, the width of the second region 54 in the y-axis direction is larger than the width of one second region 54 in the first embodiment in the y-axis direction, for example, twice.

図９（ｂ）は、図９（ａ）とは別の構成を示す。図９（ｂ）における第２透明部材４２のｙ軸方向の幅は、図９（ａ）における第２透明部材４２のｙ軸方向の幅よりも狭い。そのため。図９（ａ）において光反射部材５０のｚ軸の負方向側の面全体が第２接着剤４６に接着されているのに対して、図９（ｂ）において光反射部材５０のｚ軸の負方向側の面の一部だけが第２接着剤４６に接着される。   FIG. 9B shows a configuration different from that in FIG. The width of the second transparent member 42 in FIG. 9B in the y-axis direction is narrower than the width of the second transparent member 42 in FIG. 9A in the y-axis direction. for that reason. 9A, the entire surface on the negative side of the z-axis of the light reflecting member 50 is bonded to the second adhesive 46, whereas in FIG. 9B, the z-axis of the light reflecting member 50 is Only a part of the surface on the negative direction side is bonded to the second adhesive 46.

これまでは、第２透明部材４２に光反射部材５０が配置される。一方、第２透明部材４２ではなく、第１透明部材４０に光反射部材５０が配置されてもよい。ここでは、図１０を使用しながら、そのような構成を説明する。図１０は、第１透明部材４０の別の構成を示す断面図である。これは、図６と同様に示される。第１透明部材４０には、第１種配線材１４、第１接着剤４４、光反射部材５０が配置される。光反射部材５０は、樹脂基材５６、反射膜５８、接着剤６０を含む。   Until now, the light reflecting member 50 is disposed on the second transparent member 42. On the other hand, the light reflecting member 50 may be disposed not on the second transparent member 42 but on the first transparent member 40. 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 disposed on the first transparent member 40. The light reflecting member 50 includes a resin base material 56, a reflective film 58, and an adhesive 60.

第１透明部材４０は、ｙ軸の正方向側に第１領域５２を配置するとともに、ｙ軸の負方向側に第２領域５４を配置する。第１領域５２における構成は図６と同様である。一方、第２領域５４において第１透明部材４０のｚ軸の負方向側には第１接着剤４４が配置され、第１接着剤４４のｚ軸の負方向側には光反射部材５０が配置される。光反射部材５０は、図６と比較してｙ軸方向の幅が異なっているだけであり、図６と同様に構成される。   In the first transparent member 40, the first region 52 is disposed on the positive direction side of the y axis, and the second region 54 is disposed on the negative direction side of the y axis. The configuration in the first region 52 is the same as in FIG. On the other hand, in the second region 54, the first adhesive 44 is disposed on the negative direction side of the first transparent member 40 in the z axis, and the light reflecting member 50 is disposed on the negative direction side of the first adhesive 44 in the z axis. Is done. The light reflecting member 50 is different from that in FIG. 6 only in the width in the y-axis direction, and is configured in the same manner as in FIG.

本実施例によれば、第２透明部材４２は、太陽電池セル１０を配置した部分に対して、第１種配線材１４が延びる方向とは異なった方向の片側に光反射部材５０を配置するので、隣接した２つのストリング１２の間の隙間に入射した太陽光を反射できる。本実施例によれば、実施例１に比べｙ軸方向の端部に配置される第１２太陽電池セル１０ａｂ、第４２太陽電池セル１０ｄｂでの変換効率を向上させやすくなる。実施例１では、第１２太陽電池セル１０ａｂのｙ軸の正方向側の光反射部材５０の幅、および、第４２太陽電池セル１０ｄｂのｙ軸の負方向側の光反射部材５０の幅は、隣り合う太陽電池セル１０の間の距離の約半分程度となる。しかし、本実施例によれば、第１２太陽電池セル１０ａｂのｙ軸の正方向側の光反射部材５０の幅、および、第４２太陽電池セル１０ｄｂのｙ軸の負方向側の光反射部材５０の幅を、隣り合う太陽電池セル１０の間の距離程度とすることができ、照射される太陽光を利用率を向上させることができる。また、第２透明部材４２の代わりに第１透明部材４０が、太陽電池セル１０を配置した部分に対して、第１種配線材１４が延びる方向とは異なった方向の片側に光反射部材５０を配置してもよいので、構成の自由度を向上できる。   According to the present embodiment, the second transparent member 42 arranges the light reflecting member 50 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 cells 10 are arranged. Therefore, sunlight incident on the gap between the two adjacent strings 12 can be reflected. According to the present embodiment, it becomes easier to improve the conversion efficiency in the twelfth solar cell 10ab and the forty-second solar cell 10db disposed at the end in the y-axis direction as compared to the first embodiment. In Example 1, the width of the light reflecting member 50 on the positive direction side of the y-axis of the twelfth solar cell 10ab and the width of the light reflecting member 50 on the negative direction side of the y-axis of the forty-second solar cell 10db are This is about half of the distance between the adjacent solar cells 10. However, according to the present embodiment, the width of the light reflecting member 50 on the positive direction side of the y-axis of the twelfth solar cell 10ab and the light reflecting member 50 on the negative direction side of the y-axis of the forty-second solar cell 10db. The width of can be set to about the distance between the adjacent solar battery cells 10, and the utilization rate of the irradiated sunlight can be improved. Further, instead of the second transparent member 42, the first transparent member 40 has a light reflecting member 50 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 cell 10 is disposed. The degree of freedom of configuration can be improved.

本発明の一態様の概要は、次の通りである。複数の太陽電池セル１０は、第１方向に交差した第２方向にも並べられ、複数の第１透明部材４０と複数の第２透明部材４２の少なくとも一方は、太陽電池セル１０を配置した部分に対して第２方向の片側に光反射部材５０を配置してもよい。   The outline of one embodiment of the present invention is as follows. The plurality of solar cells 10 are also 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. However, the light reflecting member 50 may be disposed on one side in the second direction.

（実施例３）
次に、実施例３を説明する。実施例３は、これまでと同様に、光反射部材が予め配置された樹脂シートの透明部材を太陽電池セルに貼り付けることによって形成したストリングを含む太陽電池モジュールに関する。これまでは、隣接した２つのストリング間の隙間に光反射部材が配置される。一方、実施例３では、１つのストリングにおいて隣接した２つの太陽電池セル間の隙間に光反射部材が配置される。実施例２に係る太陽電池モジュール１００は、図１と同様のタイプである。ここでは、これまでとの差異を中心に説明する。 (Example 3)
Next, Example 3 will be described. Example 3 is related with the solar cell module containing the string formed by affixing the transparent member of the resin sheet in which the light reflection member was previously arrange | positioned on a photovoltaic cell like the past. Until now, the light reflecting member is disposed in the gap between two adjacent strings. On the other hand, in Example 3, a light reflecting member is arranged in a gap between two adjacent solar cells in one string. The solar cell module 100 according to Example 2 is the same type as that in FIG. Here, it demonstrates centering on the difference from before.

図１１は、本発明の実施例３に係る太陽電池モジュール１００の構造を示す断面図である。これは、図２と同様に示される。太陽電池モジュール１００は、第１２太陽電池セル１０ａｂ、第１３太陽電池セル１０ａｃ、第１種配線材１４、第１保護部材３０、第１封止部材３２、第２封止部材３４、第２保護部材３６、第１透明部材４０、第２透明部材４２、第１接着剤４４、第２接着剤４６、光反射部材５０を含む。   FIG. 11 is a cross-sectional view showing the structure of the solar cell module 100 according to Example 3 of the present invention. This is shown as in FIG. The solar cell module 100 includes a twelfth solar cell 10ab, a thirteenth solar cell 10ac, a first type wiring member 14, a first protection member 30, a first sealing member 32, a second sealing member 34, and a second protection. The member 36, the 1st transparent member 40, the 2nd transparent member 42, the 1st adhesive agent 44, the 2nd adhesive agent 46, and the light reflection member 50 are included.

第１２太陽電池セル１０ａｂ、第１３太陽電池セル１０ａｃは、第１保護部材３０の裏面側に積層される。太陽電池セル１０の受光面２２には、第１種配線材１４、第１接着剤４４、第１透明部材４０が配置され、太陽電池セル１０の裏面２４には、第１種配線材１４、第２接着剤４６、第２透明部材４２、光反射部材５０が配置される。ここでは、太陽電池セル１０に対するこれらの配置を説明するために、図１２を使用する。   The twelfth solar cell 10ab and the thirteenth solar cell 10ac are stacked on the back surface side of the first protection member 30. The first type wiring member 14, the first adhesive 44, and the first transparent member 40 are disposed on the light receiving surface 22 of the solar battery cell 10, and the first type wiring member 14, The second adhesive 46, the second transparent member 42, and the light reflecting member 50 are disposed. Here, FIG. 12 is used in order to explain these arrangements with respect to the solar battery cell 10.

図１２は、太陽電池モジュール１００において使用される樹脂シート８０の斜視図である。これは、図３と同様に示される。樹脂シート８０は、第１種配線材１４、第１透明部材４０、第２透明部材４２、第１接着剤４４、第２接着剤４６、光反射部材５０を含む。第１透明部材４０は、隣接した２つの太陽電池セル１０の一方、例えば、図１１の第１３太陽電池セル１０ａｃの受光面２２側に配置される。第１透明部材４０は、ｘ−ｙ平面において、太陽電池セル１０と同等サイズの四角形の形状を有する。第１透明部材４０における第１３太陽電池セル１０ａｃ側の面には第１接着剤４４が配置され、第１接着剤４４には複数の第１種配線材１４が配置される。   FIG. 12 is a perspective view of a 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 that is the same size as the solar battery cell 10 in the xy plane. A first adhesive 44 is disposed on the surface of the first transparent member 40 on the thirteenth solar cell 10ac side, and a plurality of first-type wiring members 14 are disposed on the first adhesive 44.

第２透明部材４２は、隣接した２つの太陽電池セル１０の他方、例えば、図１１の第１２太陽電池セル１０ａｂの裏面２４側に配置される。第２透明部材４２は、ｘ−ｙ平面において、四角形の形状を有し、そのサイズは太陽電池セル１０よりも大きい。第２透明部材４２のｙ軸方向の長さは、太陽電池セル１０のｙ軸方向の長さと同等であるが、第２透明部材４２のｘ軸方向の長さは、太陽電池セル１０のｘ軸方向の長さよりも長い。第２透明部材４２におけるｘ軸の負方向側には第１領域５２が配置され、第２透明部材４２におけるｘ軸の正方向側には第２領域５４が配置される。さらに、第２透明部材４２における第１２太陽電池セル１０ａｂ側の面には第２接着剤４６が配置される。第１領域５２における第２接着剤４６には第１種配線材１４が配置され、第２領域５４における第２接着剤４６には光反射部材５０が配置される。図１１に戻る。   The 2nd transparent member 42 is arrange | positioned at the back surface 24 side of the other of the adjacent two photovoltaic cells 10, for example, the 12th photovoltaic cell 10ab of FIG. The second transparent member 42 has a quadrangular shape in the xy plane, and the size thereof is larger than that of the solar battery 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. It is longer than the axial length. The first region 52 is arranged on the negative direction side of the x axis in the second transparent member 42, and the second region 54 is arranged on the positive direction side of the x axis in the second transparent member 42. Further, a second adhesive 46 is disposed on the surface of the second transparent member 42 on the twelfth solar battery cell 10ab side. The first type wiring member 14 is disposed on the second adhesive 46 in the first region 52, and the light reflecting member 50 is disposed on the second adhesive 46 in the second region 54. Returning to FIG.

第１２太陽電池セル１０ａｂにおいて、第２透明部材４２と第２接着剤４６は、第１２太陽電池セル１０ａｂからｘ軸の正方向側に突出する。ｘ軸の正方向側に突出した部分において、第２接着剤４６のｚ軸の正方向側に光反射部材５０が配置される。つまり、光反射部材５０は、第２透明部材４２において、太陽電池セル１０を配置した部分に対してｘ軸方向の片側に配置される。   In the twelfth solar battery cell 10ab, the second transparent member 42 and the second adhesive 46 protrude from the twelfth solar battery cell 10ab to the positive side of the x axis. The light reflecting member 50 is disposed on the positive direction side of the z-axis of the second adhesive 46 in the portion protruding to the positive direction side of the x-axis. That is, the light reflecting member 50 is disposed on one side in the x-axis direction with respect to the portion where the solar battery cell 10 is disposed in the second transparent member 42.

光反射部材５０は、隣接した２つ太陽電池セル１０、例えば、第１２太陽電池セル１０ａｂと第１３太陽電池セル１０ａｃとの間の隙間に張り出すような位置に配置される。具体的には、第１２太陽電池セル１０ａｂのｘ軸の正方向側に配置された光反射部材５０が、第１２太陽電池セル１０ａｂと第１３太陽電池セル１０ａｃとの間に配置される。さらに、図１に示したように、第１２太陽電池セル１０ａｂはｘ軸方向に延びる第１ストリング１２ａに含まれるので、光反射部材５０は、ストリング１２内の隙間に張り出すような位置に配置されるともいえる。   The light reflecting member 50 is disposed at a position so as to protrude into the gap between two adjacent solar cells 10, for example, the twelfth solar cell 10 ab and the thirteenth solar cell 10 ac. Specifically, the light reflecting member 50 disposed on the positive side of the twelfth solar cell 10ab in the x-axis direction is disposed between the twelfth solar cell 10ab and the thirteenth solar cell 10ac. Further, as shown in FIG. 1, since the twelfth solar battery cell 10ab is included in the first string 12a extending in the x-axis direction, the light reflecting member 50 is disposed at a position where it projects into the gap in the string 12. It can be said that.

これまでは、第２透明部材４２に光反射部材５０が配置される。一方、第２透明部材４２ではなく、第１透明部材４０に光反射部材５０が配置されてもよい。ここでは、図１３を使用しながら、そのような構成を説明する。図１３は、第１透明部材４０の別の構成を示す断面図である。これは、図１１と同一方向の断面図である。第１透明部材４０には、第１種配線材１４、第１接着剤４４、光反射部材５０が配置される。光反射部材５０は、接着剤６０を含む。   Until now, the light reflecting member 50 is disposed on the second transparent member 42. On the other hand, the light reflecting member 50 may be disposed not on the second transparent member 42 but on the first transparent member 40. 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 cross-sectional view in the same direction as FIG. The first type wiring member 14, the first adhesive 44, and the light reflecting member 50 are disposed on the first transparent member 40. The light reflecting member 50 includes an adhesive 60.

第１透明部材４０は、ｘ軸の負方向側に第１領域５２を配置するとともに、ｘ軸の正方向側に第２領域５４を配置する。第１領域５２における構成は図１１と同様である。一方、第２領域５４において第１透明部材４０のｚ軸の負方向側には第１接着剤４４が配置され、第１接着剤４４のｚ軸の負方向側には接着剤６０を介して光反射部材５０が配置される。   In the first transparent member 40, the first region 52 is disposed on the negative direction side of the x axis, and the second region 54 is disposed on the positive direction side of the x axis. The configuration in the first region 52 is the same as that in FIG. On the other hand, in the second region 54, the first adhesive 44 is disposed on the negative direction side of the first transparent member 40 in the z-axis, and the first adhesive 44 is disposed on the negative direction side of the z-axis via the adhesive 60. A light reflecting member 50 is disposed.

本実施例によれば、第２透明部材４２は、太陽電池セル１０を配置した部分に対して、第１種配線材１４が延びる方向の片側に光反射部材５０を配置するので、１つのストリング１２内の隙間に入射した太陽光を反射できる。また、第２透明部材４２の代わりに第１透明部材４０が、太陽電池セル１０を配置した部分に対して、第１種配線材１４が延びる方向の片側に光反射部材５０を配置してもよいので、構成の自由度を向上できる。   According to the present embodiment, the second transparent member 42 has the light reflecting member 50 disposed on one side in the direction in which the first type wiring member 14 extends with respect to the portion where the solar battery cell 10 is disposed. The sunlight that has entered the gap in 12 can be reflected. Moreover, even if the 1st transparent member 40 arrange | positions the light reflection member 50 on the one side of the direction where the 1st type wiring material 14 is extended with respect to the part which has arrange | positioned the photovoltaic cell 10 instead of the 2nd transparent member 42. Since it is good, the freedom degree of a structure can be improved.

本発明の一態様の概要は、次の通りである。複数の第１透明部材４０と複数の第２透明部材４２の少なくとも一方は、太陽電池セル１０を配置した部分に対して第１方向の片側に光反射部材５０を配置してもよい。   The outline of one embodiment 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 dispose the light reflecting member 50 on one side in the first direction with respect to the portion where the solar cells 10 are disposed.

以上、本発明について、実施例をもとに説明した。この実施例は例示であり、それらの各構成要素あるいは各処理プロセスの組合せにいろいろな変形例が可能なこと、また、そうした変形例も本発明の範囲にあることは当業者に理解されるところである。   In the above, this invention was demonstrated based on the Example. This embodiment is an exemplification, and it will be understood by those skilled in the art that various modifications can be made to the respective components or combinations of the respective treatment processes, and such modifications are also within the scope of the present invention. is there.

実施例１と実施例３とを組み合わせてもよく、実施例２と実施例３とを組み合わせてもよい。本変形例によれば、組合せによる効果を得ることができる。   Example 1 and Example 3 may be combined, and Example 2 and Example 3 may be combined. According to this modification, the effect by the combination can be obtained.

本実施例１から３において、第２透明部材４２のｚ軸の正方向側に第２接着剤４６が配置され、第２接着剤４６のｚ軸の正方向側に樹脂基材５６が取り付けられる。しかしながらこれに限らず例えば、樹脂基材５６は、第２透明部材４２の第２領域５４上に形成されてもよい。つまり、樹脂基材５６は第２透明部材４２と一体的に形成されてもよい。本変形例によれば、太陽電池モジュール１００の製造をさらに簡易にできる。   In the first to third embodiments, the second adhesive 46 is disposed on the positive direction side of the second transparent member 42 in the z axis, and the resin base material 56 is attached on the positive direction side of the second adhesive 46 in the z axis. . However, the present invention is 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 formed integrally with the second transparent member 42. According to this modification, the manufacturing of the solar cell module 100 can be further simplified.

１０ 太陽電池セル、 １２ ストリング、 １４ 第１種配線材、 １６ 第２種配線材、 １８ 第３種配線材、 ２０ フレーム、 ２２ 受光面（第１面）、 ２４ 裏面（第２面）、 ３０ 第１保護部材、 ３２ 第１封止部材、 ３４ 第２封止部材、 ３６ 第２保護部材、 ４０ 第１透明部材、 ４２ 第２透明部材、 ４４ 第１接着剤、 ４６ 第２接着剤、 ５０ 光反射部材、 ５２ 第１領域、 ５４ 第２領域、 ５６ 樹脂基材、 ５８ 反射膜、 ６０ 接着剤、 ８０ 樹脂シート、 １００ 太陽電池モジュール。   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 First protective member, 32 First sealing member, 34 Second sealing member, 36 Second protective member, 40 First transparent member, 42 Second transparent member, 44 First adhesive, 46 Second adhesive, 50 Light reflecting member, 52 1st area | region, 54 2nd area | region, 56 Resin base material, 58 Reflective film, 60 Adhesive agent, 80 Resin sheet | seat, 100 Solar cell module.

Claims (8)

第１方向に並んで配置された複数の太陽電池セルと、
複数の前記太陽電池セルを接続する複数の配線材と、
前記複数の太陽電池セルのそれぞれの第１面側に配置され、前記複数の配線材に接着される複数の第１透明部材と、
前記複数の太陽電池セルのそれぞれの第２面側に配置され、前記複数の配線材に接着される複数の第２透明部材とを備え、
前記複数の第１透明部材と前記複数の第２透明部材のうち、互いに対向した前記第１透明部材と前記第２透明部材は、１つの前記太陽電池セルを挟み込み、
前記複数の第１透明部材と前記複数の第２透明部材の少なくとも一方は、前記太陽電池セルを非配置の部分に光反射部材を配置することを特徴とする太陽電池モジュール。 A plurality of solar cells arranged side by side in the first direction;
A plurality of wiring members connecting the plurality of solar cells;
A plurality of first transparent members disposed 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 disposed on the second surface side of each of the plurality of solar cells and bonded to the plurality of wiring members;
Among 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 cell,
At least one of the plurality of first transparent members and the plurality of second transparent members has a light reflecting member disposed in a portion where the solar cells are not disposed. 前記複数の太陽電池セルは、第１方向に交差した第２方向にも並べられ、
前記複数の第１透明部材と前記複数の第２透明部材の少なくとも一方は、前記太陽電池セルを配置した部分を挟む第２方向の両側に光反射部材を配置することを特徴とする請求項１に記載の太陽電池モジュール。 The plurality of solar cells are also arranged in a second direction intersecting the first direction,
2. At least one of the plurality of first transparent members and the plurality of second transparent members has light reflecting members disposed on both sides in a second direction across a portion where the solar cells are disposed. The solar cell module according to. 前記複数の太陽電池セルは、第１方向に交差した第２方向にも並べられ、
前記複数の第１透明部材と前記複数の第２透明部材の少なくとも一方は、前記太陽電池セルを配置した部分に対して第２方向の片側に光反射部材を配置することを特徴とする請求項１に記載の太陽電池モジュール。 The plurality of solar cells are also arranged in a second direction intersecting the first direction,
The at least one of the plurality of first transparent members and the plurality of second transparent members has a light reflecting member disposed on one side in a second direction with respect to a portion where the solar cells are disposed. 1. The solar cell module according to 1. 前記第１透明部材の第１面側に設けられる第１保護部材と、
前記第１透明部材の第１面側であって、前記第１透明部材と前記第１保護部材との間に設けられる第１封止部材と、
前記第２透明部材の第２面側に設けられる第２保護部材と、
前記第２透明部材の第２面側であって、前記第２透明部材と前記第２保護部材との間に設けられる第２封止部材と、をさらに備え、
前記第１封止部材および前記第２封止部材は、前記第１保護部材および前記第２保護部材よりも軟化温度が低いことを特徴とする請求項２または３に記載の太陽電池モジュール。 A first protective 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;
4. The solar cell module according to claim 2, 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. 5. 前記複数の第１透明部材と前記複数の第２透明部材の少なくとも一方は、前記太陽電池セルを配置した部分に対して第１方向の片側に光反射部材を配置することを特徴とする請求項２から４のいずれか１項に記載の太陽電池モジュール。   The at least one of the plurality of first transparent members and the plurality of second transparent members has a light reflecting member disposed on one side in a first direction with respect to a portion where the solar cells are disposed. The solar cell module according to any one of 2 to 4. 前記複数の第１透明部材のそれぞれのサイズは、前記複数の第２透明部材のそれぞれよりのサイズよりも小さいことを特徴とする請求項１から５のいずれか１項に記載の太陽電池モジュール。   6. The solar cell module according to claim 1, wherein a size of each of the plurality of first transparent members is smaller than a size of each of the plurality of second transparent members. 前記複数の第１透明部材および前記複数の第２透明部材は、前記第１封止部材および前記第２封止部材よりも軟化温度が高いことを特徴とする請求項４に記載の太陽電池モジュール。   5. The solar cell module according to claim 4, wherein the plurality of first transparent members and the plurality of second transparent members have higher softening temperatures than the first sealing member and the second sealing member. . 隣接した２つの太陽電池セルの一方の第１面側に配置すべき第１透明部材と、
隣接した２つの太陽電池セルの他方の第２面側に配置すべき第２透明部材と、
前記第１透明部材と前記第２透明部材とを接続する配線材とを備え、
前記配線材は、前記第１透明部材における前記太陽電池セル側の面に配置されるとともに、前記第２透明部材における前記太陽電池セル側の面に配置され、
前記第１透明部材と前記第２透明部材の少なくとも一方は、前記太陽電池セル側の面のうち、前記太陽電池セルを非配置の部分に光反射部材を配置することを特徴とする樹脂シート。 A first transparent member to be disposed on one first surface side of two adjacent solar cells;
A second transparent member to be disposed on the other second surface side of two adjacent solar cells;
A wiring material for connecting the first transparent member and the second transparent member;
The wiring member is disposed on the solar cell side surface of the first transparent member, and is disposed on the solar cell side surface of the second transparent member,
At least one of the first transparent member and the second transparent member is a resin sheet in which a light reflecting member is disposed on a portion of the surface on the solar cell side where the solar cells are not disposed.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111211190A (en) * 2018-11-22 2020-05-29 松下电器产业株式会社 Solar cell module
CN111403508A (en) * 2018-12-14 2020-07-10 松下电器产业株式会社 Solar cell module

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111211190A (en) * 2018-11-22 2020-05-29 松下电器产业株式会社 Solar cell module
CN111403508A (en) * 2018-12-14 2020-07-10 松下电器产业株式会社 Solar cell module

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