JP2019186258A - Series connection structure of fibrous photovoltaic elements and cloth type solar cell including fibrous photovoltaic elements connected in series connection structure - Google Patents
Series connection structure of fibrous photovoltaic elements and cloth type solar cell including fibrous photovoltaic elements connected in series connection structure Download PDFInfo
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Abstract
Description
本発明は、繊維状光発電素子の直列接続構造と該直列接続構造で接続された繊維状光発電素子を備える布型太陽電池に関し、さらに詳しくは、例えば上着、ズボン、シャツやスカートなどの衣料品や、ベルト、帽子、手袋、ストール、鞄、横断幕、幟、ロールスクリーン、シェード、カーテン、テント等の一部に用いられる布型太陽電池に関する。 The present invention relates to a series connection structure of fibrous photovoltaic elements and a cloth type solar cell including the fibrous photovoltaic elements connected in the series connection structure, and more specifically, for example, a jacket, a trouser, a shirt or a skirt. The present invention relates to a cloth type solar cell used for a part of clothing, a belt, a hat, a glove, a stall, a bag, a banner, a bag, a roll screen, a shade, a curtain, a tent and the like.
太陽電池は、複数のパネル状の太陽電池素子からなり、各太陽電池素子はインナーリード線を用い電気的に接続されている。例えばインナーリード線としてハンダがコーティングされており、このハンダにより太陽電池素子上の電極と電気的に接続する技術が公知である。 The solar cell is composed of a plurality of panel-like solar cell elements, and each solar cell element is electrically connected using an inner lead wire. For example, solder is coated as an inner lead wire, and a technique of electrically connecting to an electrode on a solar cell element by this solder is known.
また、太陽電池モジュール内部で発電された電力をモジュールから取り出すリード線の接続方法が公知である。例えば、発電された電力を外部に取り出す内部リード線が、端子台において外部へ取り出すためのケーブルと電気的に接続する。端子台には挿入溝と挿入型圧着端子を備え、内部リード線を挿入溝と挿入型圧着端子とで挟み込むことで内部リード線を挿入溝内に固定し、挿入型圧着端子と電気的に接続する方法が記載されている（特許文献１）。 Also, a lead wire connecting method for taking out the electric power generated inside the solar cell module from the module is known. For example, an internal lead wire for taking out the generated electric power to the outside is electrically connected to a cable for taking out to the outside at the terminal block. The terminal block has an insertion groove and an insertion-type crimp terminal, and the internal lead wire is sandwiched between the insertion groove and the insertion-type crimp terminal, thereby fixing the internal lead wire in the insertion groove and electrically connected to the insertion-type crimp terminal. Is described (Patent Document 1).
しかしながら、例えば電極線の太さが０．１５ｍｍ未満であるような繊維状光発電素子同士の電極を接続するのには、ハンダによる接続ではハンダが１６０℃以上の高温になることから繊維状光発電素子への悪影響のおそれがある。 However, for example, in order to connect the electrodes of the fibrous photovoltaic elements whose electrode wire thickness is less than 0.15 mm, since the solder becomes a high temperature of 160 ° C. or higher in the connection by solder, the fiber light There is a risk of adverse effects on the power generating element.
また、出願人は繊維状光発電素子が導電性芯材と電極リード線を備え、電気的に直列に接続する他方の繊維状光発電素子の電極リード線と前記導電性芯材とが接続部を形成し、前記接続部が電気的に接続する直列接続構造を、さらに接続部をハウジング内に配置する構造を開示している（特許文献２）。 In addition, the applicant has a fibrous photovoltaic device comprising a conductive core material and an electrode lead wire, and the electrode lead wire of the other fibrous photovoltaic device electrically connected in series and the conductive core material are connected to each other. A series connection structure in which the connection part is electrically connected is disclosed, and a structure in which the connection part is further disposed in the housing is disclosed (Patent Document 2).
しかしながら、接続部の形成及び接続部をハウジング内に配置する構造をさらに簡素化したいというニーズがあった。また、繊維状光発電素子を配置した布帛は、全体としては柔軟性があるもののハウジング部での柔軟性が低下するおそれがあった。 However, there is a need to further simplify the formation of the connecting portion and the structure in which the connecting portion is disposed in the housing. Moreover, although the fabric which has arrange | positioned the fibrous photovoltaic device has flexibility as a whole, there existed a possibility that the softness | flexibility in a housing part might fall.
本発明は、かかる技術的背景に鑑みてなされたものであって、電気的に直列接続の配置の自由度を高めることで、繊維状光発電素子を配置した布帛の柔軟性の低下を抑制するとともに、接続部の形成を容易にすることが可能な直列接続構造及び該繊維状光発電素子を備える布型太陽電池を提供することを目的とする。 This invention is made | formed in view of this technical background, Comprising: By raising the freedom degree of arrangement | positioning of series connection electrically, the fall of the softness | flexibility of the fabric which has arrange | positioned the fibrous photovoltaic device is suppressed. In addition, an object is to provide a series connection structure capable of facilitating the formation of a connection portion and a cloth solar cell including the fibrous photovoltaic element.
前記目的を達成するために、本発明は以下の手段を提供する。 In order to achieve the above object, the present invention provides the following means.
［１］繊維状光発電素子は導電性芯材と電極リード線を備え、
電気的に直列に接続する他方の繊維状光発電素子の電極リード線と前記導電性芯材とが、
樹脂フィルム上に配置された導電性接着剤とともに接着され、
電気的に接続していることを特徴とする繊維状光発電素子の直列接続構造。
[1] The fibrous photovoltaic device includes a conductive core and an electrode lead wire,
The electrode lead wire of the other fibrous photovoltaic element electrically connected in series and the conductive core material are:
Bonded with conductive adhesive placed on resin film,
A series connection structure of fibrous photovoltaic elements, characterized in that they are electrically connected.
［２］樹脂フィルム上に導電材のパターンが形成され、
繊維状光発電素子は導電性芯材と電極リード線を備え、
電気的に直列に接続する他方の繊維状光発電素子の電極リード線と前記導電性芯材とが、
前記導電材上に配置された導電性接着剤とともに接着され、
電気的に接続していることを特徴とする繊維状光発電素子の直列接続構造。
[2] A conductive material pattern is formed on the resin film,
The fibrous photovoltaic device comprises a conductive core material and an electrode lead wire,
The electrode lead wire of the other fibrous photovoltaic element electrically connected in series and the conductive core material are:
Bonded with a conductive adhesive disposed on the conductive material,
A series connection structure of fibrous photovoltaic elements, characterized in that they are electrically connected.
［３］前記他方の繊維状光発電素子の電極リード線と前記導電性芯材とが導電性接着剤とともに接着された前記樹脂フィルムの面と同じ側から、さらに保護フィルムを積層する前項１又は２に記載の繊維状光発電素子の直列接続構造。 [3] The preceding item 1 in which a protective film is further laminated from the same side as the surface of the resin film in which the electrode lead wire of the other fibrous photovoltaic device and the conductive core material are bonded together with a conductive adhesive The series connection structure of the fibrous photovoltaic device of 2.
［４］前項１〜３のいずれか１項に記載の直列接続構造で接続された繊維状光発電素子を織物の少なくとも一部に備えた布型太陽電池。 [4] A cloth-type solar cell in which at least a part of a fabric includes the fibrous photovoltaic elements connected by the series connection structure according to any one of items 1 to 3.
［５］前記織物に、プラス電極用及びマイナス電極用の導電糸をそれぞれ備えた前項４に記載の布型太陽電池。 [5] The cloth-type solar cell according to item 4, wherein the fabric is provided with conductive yarns for a plus electrode and a minus electrode, respectively.
［６］前記織物の前記繊維状光発電素子を備えた部分又は領域に、保護層を積層した前項４又は５に記載の布型太陽電池。 [6] The cloth type solar cell according to the above item 4 or 5, wherein a protective layer is laminated on a portion or a region of the fabric having the fibrous photovoltaic element.
［１］の発明では、電気的に直列に接続する他方の繊維状光発電素子の電極リード線と導電性芯材とが、樹脂フィルム上に配置された導電性接着剤とともに接着され、電気的に接続している繊維状光発電素子の直列接続構造は、複数の繊維状光発電素子を電気的に直列接続することができるので、より高い電圧を得ることができる。また、樹脂フィルム上に配置された導電性接着剤とともに接着されるため、容易にしかも確実に電気的に接続することができる。 In the invention of [1], the electrode lead wire of the other fibrous photovoltaic element electrically connected in series and the conductive core material are bonded together with the conductive adhesive disposed on the resin film, and the electrical Since the plurality of fibrous photovoltaic elements connected in series can be electrically connected in series, a higher voltage can be obtained. Moreover, since it adhere | attaches with the conductive adhesive arrange | positioned on the resin film, it can connect electrically easily and reliably.
［２］の発明では、樹脂フィルム上に導電材のパターンが形成され、電気的に直列に接続する他方の繊維状光発電素子の電極リード線と導電性芯材とが、前記導電材上に配置された導電性接着剤とともに接着され、電気的に接続している繊維状光発電素子の直列接続構造は、複数の繊維状光発電素子を電気的に直列接続することができるので、より高い電圧を得ることができる。また、樹脂フィルム上に形成された導電材のパターンの上に配置された導電性接着剤とともに接着されるため、容易にしかも確実に電気的に接続することができるばかりでなく、前記パターンを一列、千鳥等パターン配置することができ自由度が高まるので、繊維状光発電素子の配列や電圧設計が容易になる。 In the invention of [2], a conductive material pattern is formed on the resin film, and the electrode lead wire and the conductive core material of the other fibrous photovoltaic element electrically connected in series are on the conductive material. The series connection structure of the fibrous photovoltaic elements that are bonded and electrically connected together with the conductive adhesive arranged can be higher because a plurality of fibrous photovoltaic elements can be electrically connected in series. A voltage can be obtained. In addition, since it is bonded together with the conductive adhesive disposed on the pattern of the conductive material formed on the resin film, not only can the electrical connection be made easily and reliably, but the pattern is arranged in a row. In addition, since it is possible to arrange patterns in a zigzag pattern and the degree of freedom is increased, the arrangement and voltage design of the fibrous photovoltaic elements are facilitated.
［３］の発明では、前記他方の繊維状光発電素子の電極リード線と前記導電性芯材とが導電性接着剤とともに接着された前記樹脂フィルムの面と同じ側から、さらに保護フィルムを積層することで接着部を保護することができ、耐久性が向上するばかりでなく、取扱いも容易になる。 In the invention of [3], a protective film is further laminated from the same side as the surface of the resin film in which the electrode lead wire of the other fibrous photovoltaic element and the conductive core material are bonded together with a conductive adhesive. By doing so, the bonded portion can be protected, not only the durability is improved, but also the handling becomes easy.
［４］の発明では、電気的に直列接続構造で接続された繊維状光発電素子を織物の少なくとも一部に備えた布型太陽電池を提供できる。少なくとも織物の一部に繊維状光発電素子を備えることで、例えば上着、ズボン、シャツやスカートなどの衣料品や、ベルト、帽子、手袋、ストール、鞄、横断幕、幟、ロールスクリーン、シェード、カーテン、テント等の一部に好適に適用することができる。 According to the invention of [4], a fabric type solar cell provided with at least a part of a fabric with a photovoltaic device electrically connected in a series connection structure can be provided. By providing a fibrous photovoltaic device at least in part of the fabric, for example, clothing such as outerwear, trousers, shirts and skirts, belts, hats, gloves, stalls, bags, banners, bags, roll screens, shades, It can be suitably applied to a part of a curtain, a tent or the like.
［５］の発明では、織物にプラス電極用及びマイナス電極用の導電糸をそれぞれ備えたことから、電流を容易に取り出せる。 In the invention of [5], since the fabric is provided with conductive yarns for the plus electrode and the minus electrode, current can be easily taken out.
［６］の発明では、繊維状光発電素子を備えた部分又は領域に、保護層を積層したことから、耐久性をより高めることができる。 In the invention of [6], since the protective layer is laminated on the part or region provided with the fibrous photovoltaic device, the durability can be further improved.
第一の発明及び第二の発明に係る繊維状光発電素子の直列接続構造の一実施形態の説明を図１に示す。第一の発明、第二の発明に係る繊維状光発電素子の直列接続構造の一実施形態の側面図を順に図２、図３に示す。 FIG. 1 shows an embodiment of a series connection structure of fibrous photovoltaic devices according to the first and second inventions. The side view of one embodiment of the serial connection structure of the fibrous photovoltaic elements according to the first invention and the second invention is shown in FIGS. 2 and 3 in order.
第一の発明及び第二の発明の繊維状光発電素子１の直列接続構造は、図１に示すように導電性芯材１−１と電極リード線１−２を備え、電気的に直列に接続する他方の繊維状光発電素子１の電極リード線１−２と前記導電性芯材１−１とが、樹脂フィルム２の上に配置された導電性接着剤３とともに接着され、電気的に接続していることを特徴とする。 The series connection structure of the fibrous photovoltaic elements 1 of the first invention and the second invention comprises a conductive core 1-1 and an electrode lead 1-2 as shown in FIG. The electrode lead wire 1-2 of the other fibrous photovoltaic element 1 to be connected and the conductive core material 1-1 are bonded together with the conductive adhesive 3 disposed on the resin film 2, and electrically It is connected.
第一の発明では、図２に示すように樹脂フィルム２の上に配置された導電性接着剤３とともに接着されるが、第二の発明では、図３に示すように樹脂フィルム上に導電材のパターンが形成され、繊維状光発電素子１は導電性芯材１−１と電極リード線１−２を備え、電気的に直列に接続する他方の繊維状光発電素子１の電極リード線１−２と前記導電性芯材１−１とが、導電材４の上に配置された導電性接着剤３とともに接着され、電気的に接続していることを特徴とする。 In the first invention, it is bonded together with the conductive adhesive 3 disposed on the resin film 2 as shown in FIG. 2, but in the second invention, the conductive material is applied on the resin film as shown in FIG. The fibrous photovoltaic element 1 includes a conductive core material 1-1 and an electrode lead wire 1-2, and the electrode lead wire 1 of the other fibrous photovoltaic element 1 that is electrically connected in series. -2 and the conductive core material 1-1 are bonded together with the conductive adhesive 3 disposed on the conductive material 4, and are electrically connected.
本発明の繊維状光発電素子１の直列接続構造において繊維状光発電素子１としては、特に限定されないが、シリコン系、無機系化合物、有機系化合物の光発電素子を挙げることができる。例えば、シリコン系光発電素子としては、単結晶シリコン光発電素子、多結晶シリコン光発電素子、アモルファスシリコン光発電素子を挙げることができる。無機系化合物光発電素子としては、ＣＩＳ系（銅（Ｃｕ）、インジウム（Ｉｎ）、ガリウム（Ｇａ）、セレン（Ｓｅ）などからなる化合物半導体でつくられる）光発電素子、ＧａＡｓ系光発電素子、ＣｄＴｅ系光発電素子を挙げることができる。有機系化合物光発電素子としては、色素増感光発電素子、有機薄膜光発電素子を挙げることができる。なかでも、繊維状基材の表面に略同芯円状に順に発電層、封止層が積層され、発電層と封止層との間に電極又は電極リード線を備えてなる光発電素子は、多方向からの光によって発電することが可能な素子であり、優れた発電性能を発揮する。また、繊維状光発電素子１の直列接続構造で、繰り返して電気的に直列接続した繊維状光発電素子１は、太陽電池としてより高い電圧を得ることができる。 In the serial connection structure of the fibrous photovoltaic elements 1 of the present invention, the fibrous photovoltaic element 1 is not particularly limited, and examples thereof include silicon-based, inorganic compounds, and organic compound photovoltaic elements. For example, examples of the silicon-based photovoltaic element include a single crystal silicon photovoltaic element, a polycrystalline silicon photovoltaic element, and an amorphous silicon photovoltaic element. Examples of inorganic compound photovoltaic elements include CIS-based (made of compound semiconductors made of copper (Cu), indium (In), gallium (Ga), selenium (Se), etc.) photovoltaic elements, GaAs-based photovoltaic elements, A CdTe photovoltaic device can be mentioned. Examples of the organic compound photovoltaic element include a dye-sensitized photovoltaic element and an organic thin film photovoltaic element. Among them, a photovoltaic element in which a power generation layer and a sealing layer are sequentially laminated on the surface of a fibrous base material, and an electrode or an electrode lead wire is provided between the power generation layer and the sealing layer. It is an element that can generate power with light from multiple directions, and exhibits excellent power generation performance. Further, the fibrous photovoltaic element 1 that is repeatedly electrically connected in series with the series connected structure of the fibrous photovoltaic elements 1 can obtain a higher voltage as a solar cell.
本発明において導電性芯材１−１は、導電性を有していれば特に限定はされないが、ステンレス線、チタン線、アルミニウム線、銅線、銀線等を挙げることができる。上述の高い汎用性の観点から繊維状光発電素子１の直径を１００μｍ〜３００μｍとするなら、導電性芯材１−１の直径としては４０μｍ〜２００μｍが好ましい。光発電素子の性能に導電性芯材１−１の寸法精度や表面の粗さが影響を及ぼすので、寸法精度と表面平滑さの点でステンレス線、チタン線、が好ましい。導電性芯材１−１の材質をステンレス、チタンとすることで発電効率に優れた繊維状光発電素子１とすることができる。また、導電性芯材１−１は、繊維状光発電素子１の陰極として作用する。 In the present invention, the conductive core material 1-1 is not particularly limited as long as it has conductivity, and examples thereof include a stainless steel wire, a titanium wire, an aluminum wire, a copper wire, and a silver wire. If the diameter of the fibrous photovoltaic device 1 is set to 100 μm to 300 μm from the viewpoint of high versatility, the diameter of the conductive core 1-1 is preferably 40 μm to 200 μm. Since the dimensional accuracy and surface roughness of the conductive core 1-1 affect the performance of the photovoltaic device, stainless steel wire and titanium wire are preferable in terms of dimensional accuracy and surface smoothness. By making the material of the conductive core 1-1 into stainless steel or titanium, the fibrous photovoltaic device 1 having excellent power generation efficiency can be obtained. In addition, the conductive core material 1-1 functions as a cathode of the fibrous photovoltaic device 1.
本発明において電極リード線１−２は、導体であれば特に限定はされないが、金線、銀線、銅線、ステンレス線等を挙げることができる。上述の高い汎用性の観点から繊維状光発電素子１の直径が１００μｍ〜３００μｍとするなら、電極リード線１−２の直径としては２０μｍ〜１００μｍが好ましい。なかでも、素材表面の酸化による劣化がなく柔軟であるので金線が好ましい。また、電極リード線１−２は、繊維状光発電素子１の陽極として作用する。 In the present invention, the electrode lead wire 1-2 is not particularly limited as long as it is a conductor, and examples thereof include a gold wire, a silver wire, a copper wire, and a stainless steel wire. If the diameter of the fibrous photovoltaic device 1 is set to 100 μm to 300 μm from the viewpoint of high versatility as described above, the diameter of the electrode lead wire 1-2 is preferably 20 μm to 100 μm. Among them, a gold wire is preferable because it is flexible without being deteriorated due to oxidation of the material surface. Further, the electrode lead wire 1-2 acts as an anode of the fibrous photovoltaic device 1.
本発明において導電性接着剤３としては、電気伝導度の高い金属粉末を接着剤に混入したものが用いられる。金属粉末は、例えば、金、銀、銅、白金、ニッケル等が挙げられる。また、接着剤樹脂としてはエポキシ樹脂、アクリル樹脂を例示できる。 In the present invention, as the conductive adhesive 3, an adhesive obtained by mixing a metal powder having high electrical conductivity into the adhesive is used. Examples of the metal powder include gold, silver, copper, platinum, nickel and the like. Moreover, as an adhesive resin, an epoxy resin and an acrylic resin can be illustrated.
第一の発明では、電気的に直列に接続する他方の繊維状光発電素子１の電極リード線１−２と導電性芯材１−１とを、樹脂フィルム２の上に配置された導電性接着剤３とともに接着する際、電気的に接続し接着されていれば、特に限定されずどのような接続であってもよいが、例えば電極リード線１−２を導電性芯材１−１に巻き付けて形成してもよい。 In 1st invention, the electroconductive core material 1-1 which arrange | positioned the electrode lead wire 1-2 and the electroconductive core material 1-1 of the other fibrous photovoltaic device 1 electrically connected in series is electrically connected. When bonding together with the adhesive 3, any connection may be used as long as it is electrically connected and bonded. For example, the electrode lead wire 1-2 may be connected to the conductive core 1-1. It may be formed by wrapping.
また 第二の発明では、樹脂フィルム上に導電材４のパターンが形成され、電気的に直列に接続する他方の繊維状光発電素子１の電極リード線１−２と導電性芯材１−１とを、導電材４の上に配置された導電性接着剤３とともに接着する際、電気的に接続し接着されていれば、特に限定されずどのような接続であってもよいが、例えば電極リード線１−２を導電性芯材１−１に巻き付けて形成してもよい。導電材４としては、導電性を有するものであれば特に限定されないが、例えば金、銀、銅、アルミニウム、白金等を挙げることができる。 Moreover, in 2nd invention, the pattern of the electrically conductive material 4 is formed on a resin film, and the electrode lead wire 1-2 of the other fibrous photovoltaic device 1 electrically connected in series and the electrically conductive core material 1-1. Are bonded together with the conductive adhesive 3 disposed on the conductive material 4 as long as they are electrically connected and bonded without any particular limitation. The lead wire 1-2 may be formed by wrapping around the conductive core material 1-1. Although it will not specifically limit as the electrically conductive material 4 if it has electroconductivity, For example, gold | metal | money, silver, copper, aluminum, platinum etc. can be mentioned.
このようにして、例えば直径が０．１５ｍｍ未満の電極リード線１−２のように極めて細い電極であっても、ハンダを使用することなく接続することができるので繊維状光発電素子１を高温にさらしてしまうことがないので、繊維状光発電素子１を破損させるおそれがない。したがって、本発明では繊維状光発電素子１同士を電気的に直列に接続することができるので、光発電によってより高電圧が得られる。 In this way, even if the electrode lead wire 1-2 has a diameter of less than 0.15 mm, for example, an extremely thin electrode can be connected without using solder, the fibrous photovoltaic device 1 is heated at a high temperature. Therefore, there is no possibility of damaging the fibrous photovoltaic device 1. Therefore, in this invention, since the fibrous photovoltaic elements 1 can be electrically connected in series, a higher voltage is obtained by photovoltaic power generation.
図４（ａ）には、樹脂フィルム２を示す。これは、第一の発明における樹脂フィルム２であるし、また第二の発明での導電材４のパターンを形成する前の樹脂フィルム２でもある。また、図４（ｂ）には、導電材４のパターンを形成した樹脂フィルム２を示す。この例では導電材４が千鳥に配列したパターンであるが、特にこのパターンに限定されない。 FIG. 4A shows the resin film 2. This is the resin film 2 in the first invention and also the resin film 2 before forming the pattern of the conductive material 4 in the second invention. FIG. 4B shows a resin film 2 on which a pattern of the conductive material 4 is formed. In this example, the conductive material 4 is a pattern arranged in a staggered manner, but is not particularly limited to this pattern.
このように導電材４のパターンを形成することで、導電材４のパターンの上に配置された導電性接着剤とともに接着することができるため、容易にしかも確実に電気的に接続することができるばかりでなく、前記パターンを一列、千鳥等パターン配置することができ自由度が高まるので、繊維状光発電素子の配列や電圧設計が容易になる。 By forming the pattern of the conductive material 4 in this way, it can be bonded together with the conductive adhesive disposed on the pattern of the conductive material 4, so that it can be easily and reliably electrically connected. In addition, since the patterns can be arranged in a pattern such as a single row or a staggered pattern, the degree of freedom is increased, so that the arrangement and voltage design of the fibrous photovoltaic elements are facilitated.
樹脂フィルム２としては、特に限定されないが、例えばアクリル、塩化ビニル、ポリスチレンを挙げることができる。さらに可撓性を有するのが好ましく、この場合ポリプロピレン、ポリイミドを挙げることができる。また、熱接着可能な低融点の樹脂フィルムがなお一層好ましく、ポリエステル、ポリエチレンを挙げることができる。 Although it does not specifically limit as the resin film 2, For example, an acryl, vinyl chloride, and a polystyrene can be mentioned. Furthermore, it is preferable to have flexibility, and in this case, polypropylene and polyimide can be mentioned. Moreover, a low melting point resin film that can be thermally bonded is still more preferable, and examples thereof include polyester and polyethylene.
他方の繊維状光発電素子１の電極リード線１−２と前記導電性芯材１−１とが導電性接着剤３とともに接着された樹脂フィルム２の面と同じ側から、さらに保護フィルムを積層するのが好ましい。保護フィルムとしては、樹脂フィルム２と同じであってもなくてもよい。こうして、保護すると同時に繊維状光発電素子１同士が、意図せず電気的に接続してしますおそれを抑制することができる。 A protective film is further laminated from the same side as the surface of the resin film 2 in which the electrode lead wire 1-2 of the other fibrous photovoltaic device 1 and the conductive core 1-1 are bonded together with the conductive adhesive 3. It is preferable to do this. The protective film may or may not be the same as the resin film 2. Thus, at the same time as protecting, the possibility that the fibrous photovoltaic elements 1 are electrically connected unintentionally can be suppressed.
さらに、第三の発明に係る繊維状光発電素子を備える布型太陽電池の一実施形態の説明図を図５に示す。図５に示すように電気的に直列接続構造で接続された繊維状光発電素子１を織物６の少なくとも一部に備える。個々の樹脂フィルム２が千鳥に配されている。こうすることで布型の柔軟性を活かしながらレイアウトを設計し配置することができる。また、第三の発明に係る繊維状光発電素子を備える布型太陽電池の他の実施形態の説明図を図６に示す。図６に示すように接続部近傍を覆うように樹脂フィルム２を配してもよい。こうして、電気的に直列接続構造で接続された繊維状光発電素子を織物の少なくとも一部に備えた布型太陽電池を提供することができる。 Furthermore, FIG. 5 shows an explanatory view of an embodiment of a cloth-type solar cell including the fibrous photovoltaic device according to the third invention. As shown in FIG. 5, at least a part of the fabric 6 includes the fibrous photovoltaic elements 1 electrically connected in a series connection structure. Individual resin films 2 are arranged in a staggered manner. By doing so, the layout can be designed and arranged while taking advantage of the flexibility of the cloth mold. Moreover, FIG. 6 shows an explanatory diagram of another embodiment of a cloth type solar cell including the fibrous photovoltaic device according to the third invention. As shown in FIG. 6, the resin film 2 may be arranged so as to cover the vicinity of the connection portion. In this way, it is possible to provide a cloth type solar cell including at least a part of the fabric with the fibrous photovoltaic elements electrically connected in a series connection structure.
なお、本願発明は電気的な接続として繊維状光発電素子の直列接続構造に係る発明であるが、電気的に並列に接続する並列接続構造を形成することで、織物の一部に並列接続構造を設けてもよい。さらに、直列接続構造を有する織物、並列接続構造を有する織物を別々に形成し、これらを組み合わせてもよい。これらを組み合わせることで並列接続構造のものを互いに直列に接続してもよいし、直列接続構造のものを互いに並列に接続してもよい。こうして電圧も電流も設計することができる。 In addition, although this invention is invention which concerns on the serial connection structure of a fibrous photovoltaic device as an electrical connection, by forming the parallel connection structure connected in parallel electrically, it is parallel connection structure in a part of textiles May be provided. Further, a fabric having a series connection structure and a fabric having a parallel connection structure may be separately formed and combined. By combining these, those having a parallel connection structure may be connected in series with each other, or those having a series connection structure may be connected in parallel with each other. Thus, both voltage and current can be designed.
布型太陽電池５を構成する織物６としては、特に限定されないが、例えば公知の織機にて、経糸として、総繊度３５０ｄｔｅｘポリエステル繊維を用い、緯糸として直径１９０μｍの繊維状光発電素子（直径１９０μｍ）と総繊度３５０ｄｔｅｘのポリエステル繊維を引き揃えて平織（緯糸の織込本数は５２本／ｃｍ）の織物６を製織することができる。 The fabric 6 constituting the fabric type solar cell 5 is not particularly limited. For example, in a known loom, a polyester fiber having a total fineness of 350 dtex is used as a warp, and a fibrous photovoltaic element (diameter 190 μm) having a diameter of 190 μm as a weft. And a polyester fabric having a total fineness of 350 dtex are aligned to produce a plain weave fabric (the number of weft weaving is 52 / cm).
織物６には、プラス電極用及びマイナス電極用の導電糸７をそれぞれ備えるので、電極を接続することで電流を容易に取り出せるので好ましい。導電糸７は、織物６の経糸や緯糸として織り込むことで、確実に配置できるうえ、織り込まれた導電糸７のどこからでも電流を取り出せるので好ましい。 Since the fabric 6 is provided with the conductive yarns 7 for the plus electrode and the minus electrode, it is preferable because the current can be easily taken out by connecting the electrodes. The conductive yarn 7 is preferable because it can be reliably arranged by weaving it as warp or weft of the woven fabric 6 and an electric current can be taken from anywhere of the woven conductive yarn 7.
導電糸７としては、導電性があれば特に限定されないが、例えば金、銀、銅等の金属によるめっき繊維や、金、銀、銅、ニッケル、スズ、ステンレス等の金属線、金属めっき繊維によるカバリング糸等を挙げることができる。 The conductive yarn 7 is not particularly limited as long as it has conductivity. For example, the conductive yarn 7 is made of a plated fiber made of a metal such as gold, silver, or copper, a metal wire such as gold, silver, copper, nickel, tin, or stainless steel, or a metal plated fiber. And covering yarn.
織物６の繊維状光発電素子１を備えた部分又は領域に、保護層を積層するのが繊維状光発電素子１を保護し、耐久性をより向上させることから好ましい。前記保護層としては、例えばポリエステル、エチレンビニルアルコール、無機ガラスを挙げることができる。なかでも、ポリエステル、エチレンビニルアルコールは熱接着により布型太陽電池５を構成する織物６と密着することから、織物６の可撓性を維持できる強固な保護層となるので好ましい。また、上述の保護層にシリカを蒸着したものは、酸素や水分の透過を防止または抑制することができるのでより好ましい。 It is preferable to laminate a protective layer on the portion or region of the fabric 6 provided with the fibrous photovoltaic element 1 in order to protect the fibrous photovoltaic element 1 and further improve the durability. Examples of the protective layer include polyester, ethylene vinyl alcohol, and inorganic glass. Among these, polyester and ethylene vinyl alcohol are preferable because they are in close contact with the fabric 6 constituting the fabric type solar cell 5 by thermal bonding, and thus become a strong protective layer capable of maintaining the flexibility of the fabric 6. Moreover, what vapor-deposited the silica to the above-mentioned protective layer is more preferable since the permeation | transmission of oxygen and a water | moisture content can be prevented or suppressed.
こうした構成を備えた布型太陽電池は、例えば上着、ズボン、シャツやスカートなどの衣料品や、ベルト、帽子、手袋、ストール、鞄、横断幕、幟、ロールスクリーン、シェード、カーテン、テント等の一部として好適である。 Cloth-type solar cells with such a structure can be used for clothing such as outerwear, trousers, shirts and skirts, belts, hats, gloves, stalls, bags, banners, bags, roll screens, shades, curtains, tents, etc. Suitable as part.
次に、本発明の具体的な実施例について説明するが、本発明はこれらの実施例のものに特に限定されるものではない。なお、この発明の実施例の使用材料は次の通りである。 Next, specific examples of the present invention will be described, but the present invention is not particularly limited to these examples. The materials used in the examples of the present invention are as follows.
＜使用材料＞
繊維状光発電素子・・・有機系発電糸（直径２００μｍ）
導電性芯材・・・ステンレス線（直径１００μｍ）
電極リード線・・・金線（直径５０μｍ）
樹脂フィルム・・・ポリエチレン樹脂（厚さ１００μｍ）
導電性接着剤・・・導電性エポキシ樹脂（銀フィラー含有）
導電材・・・銅
織物・・・経糸：ポリエステル繊維（総繊度３５０ｄｔｅｘ）、緯糸：ポリエステル繊維（総繊度３５０ｄｔｅｘ）
導電糸・・・スズめっき銅線を弾性糸に巻付けた複合糸
プラス電極端子部・・・銅製（厚さ５００μｍ）
マイナス電極端子部・・・銅製（厚さ５００μｍ）
<Materials used>
Fibrous photovoltaic element: Organic power generation yarn (diameter 200μm)
Conductive core material ... stainless steel wire (diameter 100μm)
Electrode lead wire ... Gold wire (diameter 50μm)
Resin film: Polyethylene resin (thickness: 100μm)
Conductive adhesive: conductive epoxy resin (containing silver filler)
Conductive material: Copper fabric: Warp: Polyester fiber (total fineness 350 dtex), Weft: Polyester fiber (total fineness 350 dtex)
Conductive thread: Composite thread in which tin-plated copper wire is wound around elastic thread Positive electrode terminal: Copper (thickness: 500 μm)
Minus electrode terminal: copper (thickness 500μm)
＜実施例１＞
ステンレス線を芯材とし、金線を電極リード線として備える有機系発電糸を用意した。この金線を別の有機系発電糸の芯材の端部に５回巻き付けた。続いてこの巻き付けた部分をポリエチレン樹脂製フィルム上の導電性接着剤とともに接着することで繊維状光発電素子の直列接続構造を得た。
<Example 1>
An organic power generation yarn having a stainless steel wire as a core material and a gold wire as an electrode lead wire was prepared. This gold wire was wound 5 times around the end of the core material of another organic power generation yarn. Subsequently, the wound portion was bonded together with a conductive adhesive on a polyethylene resin film to obtain a series connection structure of fibrous photovoltaic devices.
織物の耳内に導電糸（マイナス電極用、プラス電極用）が経糸として組織されるように製織しながら、繊維状光発電素子を１０本に１本の割合で緯糸として製織した。次に、1番目の繊維状光発電素子のステンレス線を導電性接着剤で導電糸（マイナス極用）と接着した。続いて、１番目の繊維状光発電素子の金線を隣の繊維状光発電素子の端部に５回巻き付け、順に全ての繊維状光発電素子について同様に行った。次に、あらかじめ用意した帯状のポリエチレン樹脂製のフィルムに導電性接着剤を図４（ｂ）のように配し、上述の金線を巻き付けた部分を導電性接着剤で接着した。最後の繊維状光発電素子の金線を導電性接着剤で別の導電糸（プラス電極用）と接着した。マイナス電極端子部、プラス電極端子部をそれぞれの導電糸に設けた。こうして図５に示すような布型太陽電池を得た。 While weaving so that conductive yarns (for negative electrode and positive electrode) were organized as warps in the ears of the fabric, weaved fibrous photovoltaic elements as wefts at a ratio of one to ten. Next, the stainless steel wire of the first fibrous photovoltaic device was bonded to the conductive yarn (for negative electrode) with a conductive adhesive. Then, the gold wire of the 1st fibrous photovoltaic device was wound around the edge part of the adjacent fibrous photovoltaic device 5 times, and it carried out similarly about all the fibrous photovoltaic devices in order. Next, a conductive adhesive was placed on a belt-shaped polyethylene resin film prepared in advance as shown in FIG. 4B, and the portion around which the gold wire was wound was adhered with the conductive adhesive. The gold wire of the last fibrous photovoltaic element was bonded to another conductive yarn (for positive electrode) with a conductive adhesive. A negative electrode terminal portion and a positive electrode terminal portion were provided on each conductive thread. Thus, a cloth type solar cell as shown in FIG. 5 was obtained.
得られた布型太陽電池の上面に樹脂フィルムを積層したのち、布型太陽電池の表面にポリエチレン樹脂製のフィルムを温度１４０℃で熱接着し保護層とした。こうして用意した布型太陽電池をブルゾンの肩部に取付けた。 After laminating a resin film on the upper surface of the obtained cloth type solar cell, a polyethylene resin film was thermally bonded to the surface of the cloth type solar cell at a temperature of 140 ° C. to form a protective layer. The cloth type solar cell thus prepared was attached to the shoulder of the blouson.
＜実施例２＞
実施例１において、織物を製織する際に、繊維状光発電素子を１５本に１本の割合で緯糸とし対外は実施例１と同様にして布型太陽電池を得た。
<Example 2>
In Example 1, when weaving the woven fabric, a fabric type solar cell was obtained in the same manner as in Example 1 except that the number of fibrous photovoltaic elements was 15 in one weft.
得られた布型太陽電池の上面に樹脂フィルムを積層したのち、布型太陽電池の表面にポリエチレン樹脂製のフィルムを温度１４０℃で熱接着し保護層とした。こうして用意した布型太陽電池をカーテンに取付けた。 After laminating a resin film on the upper surface of the obtained cloth type solar cell, a polyethylene resin film was thermally bonded to the surface of the cloth type solar cell at a temperature of 140 ° C. to form a protective layer. The cloth type solar cell thus prepared was attached to the curtain.
このようにして得られた繊維状光発電素子の電気的な直列接続構造は配置の自由度もあり、また配置した繊維状光発電素子を備える布型太陽電池はいずれも柔軟性を有するものであった。 The thus obtained electrical series connection structure of the fibrous photovoltaic elements also has a degree of freedom of arrangement, and all the cloth type solar cells provided with the arranged fibrous photovoltaic elements have flexibility. there were.
本発明に係る繊維状光発電素子の直列接続構造及び該直列接続構造で接続された繊維状光発電素子を備える布型太陽電池は、特に限定されるものではないが、屋内ばかりでなく屋外の品、さらには身に着けるいわゆるウェアラアブル品や、携行品に用いられる。 The series connection structure of the fibrous photovoltaic elements according to the present invention and the cloth type solar cell including the fibrous photovoltaic elements connected in the series connection structure are not particularly limited, but are not only indoors but also outdoor. It is used for goods, so-called wearables that can be worn, and portable items.
１…繊維状光発電素子
１−１…導電性芯材
１−２…電極リード線
２…樹脂フィルム
３…導電性接着剤
４…導電材
５…布型太陽電池
６…織物
７…導電糸
８…プラス電極端子部
９…マイナス電極端子部
DESCRIPTION OF SYMBOLS 1 ... Fibrous photovoltaic device 1-1 ... Conductive core material 1-2 ... Electrode lead wire 2 ... Resin film 3 ... Conductive adhesive 4 ... Conductive material 5 ... Cloth type solar cell 6 ... Textile 7 ... Conductive thread 8 ... plus electrode terminal part 9 ... minus electrode terminal part
Claims (6)
電気的に直列に接続する他方の繊維状光発電素子の電極リード線と前記導電性芯材とが、
樹脂フィルム上に配置された導電性接着剤とともに接着され、
電気的に接続していることを特徴とする繊維状光発電素子の直列接続構造。 The fibrous photovoltaic device comprises a conductive core material and an electrode lead wire,
The electrode lead wire of the other fibrous photovoltaic element electrically connected in series and the conductive core material are:
Bonded with conductive adhesive placed on resin film,
A series connection structure of fibrous photovoltaic elements, characterized in that they are electrically connected.
繊維状光発電素子は導電性芯材と電極リード線を備え、
電気的に直列に接続する他方の繊維状光発電素子の電極リード線と前記導電性芯材とが、
前記導電材上に配置された導電性接着剤とともに接着され、
電気的に接続していることを特徴とする繊維状光発電素子の直列接続構造。 A conductive material pattern is formed on the resin film,
The fibrous photovoltaic device comprises a conductive core material and an electrode lead wire,
The electrode lead wire of the other fibrous photovoltaic element electrically connected in series and the conductive core material are:
Bonded with a conductive adhesive disposed on the conductive material,
A series connection structure of fibrous photovoltaic elements, characterized in that they are electrically connected.
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