JP5239197B2 - Method and apparatus for mounting electrolyte membrane for fuel cell - Google Patents

Method and apparatus for mounting electrolyte membrane for fuel cell Download PDF

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JP5239197B2
JP5239197B2 JP2007098435A JP2007098435A JP5239197B2 JP 5239197 B2 JP5239197 B2 JP 5239197B2 JP 2007098435 A JP2007098435 A JP 2007098435A JP 2007098435 A JP2007098435 A JP 2007098435A JP 5239197 B2 JP5239197 B2 JP 5239197B2
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electrolyte membrane
fixing member
fuel cell
mounting
fixing
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JP2008257980A (en
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智之 夏目
光弘 根上
浩二 猪俣
愛 板垣
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Nissan Motor 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

Description

本発明は、燃料電池の製造技術に関し、より詳しくは、皺を発生させることなく電解質膜を載置台上に短時間で載置するための技術に係わる。   The present invention relates to a fuel cell manufacturing technique, and more particularly to a technique for mounting an electrolyte membrane on a mounting table in a short time without generating soot.

高分子電解質膜を用いた燃料電池は、高分子電解質膜の両面に燃料極と空気極とを接合一体化した膜電極接合体をセパレータで挟み込んで燃料電池単セルを構成し、この燃料電池単セルを複数個積層することで燃料電池スタックとしている。膜電極接合体は、高分子電解質膜の両面に触媒層を形成し、さらにその外側にガス拡散層を取り付けて接合一体化した構成となっている。従来の触媒層の形成方法としては、特許文献１に開示されているような、一定温度に保持した載置台上に高分子電解質膜を載置，固定した後、高分子電解質膜表面に触媒スラリーを塗布する方法が知られている。
特開２００３−１００３１４号公報 In a fuel cell using a polymer electrolyte membrane, a fuel cell unit cell is configured by sandwiching a membrane electrode assembly in which a fuel electrode and an air electrode are joined and integrated on both sides of a polymer electrolyte membrane with a separator. A fuel cell stack is formed by stacking a plurality of cells. The membrane / electrode assembly has a structure in which a catalyst layer is formed on both surfaces of a polymer electrolyte membrane, and a gas diffusion layer is attached to the outside of the polymer electrolyte membrane so as to be joined and integrated. As a conventional method for forming a catalyst layer, a catalyst slurry is placed on the surface of the polymer electrolyte membrane after the polymer electrolyte membrane is mounted and fixed on a mounting table held at a constant temperature as disclosed in Patent Document 1. There is known a method of applying the coating.
JP 2003-100314 A

一般に高分子電解質膜を載置台に載置する際、高分子電解質膜に皺が発生しやすい。そして高分子電解質膜に皺が発生したままの状態で触媒層を形成した場合には、耐久性能等の燃料電池の性能が悪化する可能性がある。また皺が発生しないように高分子電解質膜を載置するためには多くの作業時間を要する。   Generally, when a polymer electrolyte membrane is placed on a mounting table, wrinkles are likely to occur in the polymer electrolyte membrane. When the catalyst layer is formed in a state where wrinkles are generated in the polymer electrolyte membrane, there is a possibility that the performance of the fuel cell such as durability performance is deteriorated. In addition, it takes a lot of work time to place the polymer electrolyte membrane so that wrinkles do not occur.

本発明は上記課題を解決するためになされたものであり、その目的は皺を発生させることなく電解質膜を載置台上に短時間で載置可能な燃料電池用電解質膜の載置方法及び載置装置を提供することにある。   The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a method and a method for mounting an electrolyte membrane for a fuel cell capable of mounting an electrolyte membrane on a mounting table in a short time without generating wrinkles. It is to provide a placement device.

本発明に係る燃料電池用電解質膜の載置方法は、電解質膜の一方の端部を回転自在に支持された柱状の固定部材の側表面に固定する第１のステップと、固定部材を回転させることにより前記電膜を固定部材の側表面に巻き付ける第２のステップと、電解質膜の他方の端部を固定部材の側表面に切断して固定する第３のステップと、固定部材を載置台上に移動し、その載置台表面に電解質膜の一方の端部を接触させた後、固定部材を回転させることにより固定部材の側表面に巻き付けられた電解質膜を載置台表面に載置する第４のステップとを有する。本発明に係る燃料電池用電解質膜の載置装置は、側表面に電解質膜が巻き付けられる柱状の固定部材と、前記固定部材を、回転軸を介して回転自在に支持する回転機構と、前記固定部材の側表面に所定距離離間して設けられ、電解質膜の一方を固定する第１の保持部材と、電解質膜の他方の端部を切断、固定するそれぞれ保持する第１及び第２の保持部材と、前記固定部材を移動する搬送機構と、前記搬送機構による固定部材の移動により切断された電解質膜が設置される載置台とを備える。

The method for placing an electrolyte membrane for a fuel cell according to the present invention includes a first step of fixing one end of the electrolyte membrane to a side surface of a columnar fixing member that is rotatably supported , and rotating the fixing member. A second step of winding the electrode film around the side surface of the fixing member, a third step of cutting and fixing the other end of the electrolyte membrane to the side surface of the fixing member, and the fixing member on the mounting table. And moving one of the end portions of the electrolyte membrane to the surface of the mounting table, and then rotating the fixing member to place the electrolyte membrane wound around the side surface of the fixing member on the surface of the mounting table. Steps. An apparatus for mounting an electrolyte membrane for a fuel cell according to the present invention includes a columnar fixing member around which an electrolyte membrane is wound , a rotating mechanism that rotatably supports the fixing member via a rotating shaft, and the fixing device. A first holding member that is provided on the side surface of the member at a predetermined distance and fixes one of the electrolyte membranes, and first and second holding members that respectively hold and cut and fix the other end of the electrolyte membrane And a transport mechanism that moves the fixing member, and a mounting table on which the electrolyte membrane cut by the movement of the fixing member by the transport mechanism is installed .

本発明に係る燃料電池用電解質膜の載置方法及び載置装置によれば、皺を発生させることなく電解質膜を載置台上に短時間で載置することができる。   According to the method and apparatus for mounting an electrolyte membrane for a fuel cell according to the present invention, the electrolyte membrane can be mounted on the mounting table in a short time without generating wrinkles.

以下、本発明の好適な実施形態を図面に基づいて説明する。   DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the drawings.

〔載置装置の構成〕
本発明の実施形態となる載置装置は、図１に示すように、楕円の断面形状を有し、側表面に電解質膜１が巻き付けられる柱状の固定部材２と、回転軸３を介して固定部材２を回転支持するモータ４と、モータ４が載置される台車５と、レール６に沿って台車５を移動するシリンダ７とを主な構成要素として備える。固定部材２の側周部には、電解質膜ロール８から巻き出された電解質膜１の先端部分を固定するクリップ部材９と、クリップ部材９から固定部材２の周方向に所定距離離間して設けられ、電解質膜ロール８から巻き出された電解質膜１を所定長さに切断，固定するクリップ状のカッター部材１０とが配設されている。 [Configuration of mounting device]
As shown in FIG. 1, the mounting device according to the embodiment of the present invention has an elliptical cross-sectional shape, and is fixed via a rotation shaft 3 and a columnar fixing member 2 around which an electrolyte membrane 1 is wound. A motor 4 that rotatably supports the member 2, a carriage 5 on which the motor 4 is placed, and a cylinder 7 that moves the carriage 5 along the rail 6 are provided as main components. A clip member 9 for fixing the tip end portion of the electrolyte membrane 1 unwound from the electrolyte membrane roll 8 and a predetermined distance apart from the clip member 9 in the circumferential direction of the fixing member 2 are provided on the side peripheral portion of the fixing member 2. In addition, a clip-shaped cutter member 10 that cuts and fixes the electrolyte membrane 1 unwound from the electrolyte membrane roll 8 to a predetermined length is disposed.

図示しないが、固定部材２の近傍には電解質膜ロール８から巻き出された電解質膜１を固定部材２の側表面に貼り付けるために、図２（ａ）に示すように固定部材２の側表面に静電気（電荷）を発生させる静電気発生装置が設けられている。なお固定部材２の側表面に静電気を容易に発生しやすくするために、固定部材２は樹脂製であることが望ましい。また本実施形態では静電気を利用して電解質膜１を固定部材２の側表面に貼り付けたが、例えば図２（ｂ）に示すように固定部材２の側表面に複数の吸引孔を形成し、真空ポンプ等の吸気装置を利用して固定部材２の外側から内側方向に吸引することにより電解質膜１を固定部材２の側表面に貼り付けてもよい。   Although not shown, in order to affix the electrolyte membrane 1 unwound from the electrolyte membrane roll 8 to the side surface of the fixing member 2 in the vicinity of the fixing member 2, the side of the fixing member 2 as shown in FIG. A static electricity generator for generating static electricity (charge) on the surface is provided. In order to easily generate static electricity on the side surface of the fixing member 2, the fixing member 2 is preferably made of resin. In this embodiment, the electrolyte membrane 1 is attached to the side surface of the fixing member 2 using static electricity. However, for example, a plurality of suction holes are formed on the side surface of the fixing member 2 as shown in FIG. Alternatively, the electrolyte membrane 1 may be attached to the side surface of the fixing member 2 by suctioning the fixing member 2 from the outside to the inside using an intake device such as a vacuum pump.

〔貼付時の動作〕
上記構成の固定装置は、以下に示すように動作することにより皺を発生させることなく電解質膜１を固定部材２の側表面に貼り付ける。すなわち始めに、電解質膜ロール８から電解質膜１の先端部分を巻きだし、クリップ部材９により電解質膜１の先端部分を固定部材２の側表面に固定する。次に、モータ４を回転駆動して固定部材２を回転させることにより電解質膜１を固定部材２の側表面に巻き付けていく。この時、固定部材２は楕円形状であるので、電解質膜１には適当な張力がかかり、電解質膜１は皺を発生することなく固定部材２の側表面に巻き付いていく。また既に述べたように、固定部材２表面は帯電しているので、電解質膜１は静電気力によって固定部材２の側表面に貼り付けられる。次に、所定長の電解質膜１が固定部材２の側表面に巻き付けられると、カッター部材１０により電解質膜ロール８から電解質膜１を切除すると共に、カッター部材１０により所定長の電解質膜１の後端部分を固定する。これにより、所定長の電解質膜１を皺を発生させることなく固定部材２の側表面に貼り付けることができる。 [Operation when pasting]
The fixing device configured as described above operates as described below to attach the electrolyte membrane 1 to the side surface of the fixing member 2 without generating wrinkles. That is, first, the tip portion of the electrolyte membrane 1 is unwound from the electrolyte membrane roll 8, and the tip portion of the electrolyte membrane 1 is fixed to the side surface of the fixing member 2 by the clip member 9. Next, the electrolyte membrane 1 is wound around the side surface of the fixing member 2 by rotating the motor 4 to rotate the fixing member 2. At this time, since the fixing member 2 has an elliptical shape, an appropriate tension is applied to the electrolyte membrane 1, and the electrolyte membrane 1 is wound around the side surface of the fixing member 2 without generating wrinkles. As described above, since the surface of the fixing member 2 is charged, the electrolyte membrane 1 is attached to the side surface of the fixing member 2 by electrostatic force. Next, when the electrolyte membrane 1 having a predetermined length is wound around the side surface of the fixing member 2, the electrolyte membrane 1 is removed from the electrolyte membrane roll 8 by the cutter member 10, and the electrolyte membrane 1 after the predetermined length is removed by the cutter member 10. Fix the end part. As a result, the electrolyte membrane 1 having a predetermined length can be attached to the side surface of the fixing member 2 without generating wrinkles.

〔載置時の動作〕
上記構成の固定装置は、以下に示すように動作することにより固定部材２の側表面に接着された電解質膜１を触媒塗布装置の載置台上に載置する。すなわち始めに、シリンダ７を駆動してレール６に沿って台車５を移動することにより固定部材２を触媒塗布装置の膜載置台上方に移動する。次に、図３（ａ）に示すように固定部材２を載置台１１表面に接触させた後、載置台１１表面側から内側への吸気を開始するのと同時に、モータ４を駆動することにより固定部材２を回転させる。固定部材２の回転に伴い側表面に固定された電解質膜１は、図３（ｂ）〜（ｄ）に示すように載置台１１側に吸引され、触媒塗布装置側への電解質膜１の載置作業は完了する。なおこの時、電解質膜１の載置台１１側への移動を容易にするために固定部材２側表面の静電気は予め除去しておくことが望ましい。 [Operation when placing]
The fixing device having the above-described configuration operates as follows to place the electrolyte membrane 1 adhered to the side surface of the fixing member 2 on the mounting table of the catalyst coating device. That is, first, the cylinder 7 is driven and the carriage 5 is moved along the rail 6 to move the fixing member 2 above the film mounting table of the catalyst coating apparatus. Next, as shown in FIG. 3 (a), after the fixing member 2 is brought into contact with the surface of the mounting table 11, by starting the intake from the surface of the mounting table 11 to the inside, the motor 4 is driven at the same time. The fixing member 2 is rotated. As shown in FIGS. 3B to 3D, the electrolyte membrane 1 fixed to the side surface with the rotation of the fixing member 2 is sucked to the mounting table 11 side, and the electrolyte membrane 1 is placed on the catalyst coating device side. The installation work is completed. At this time, it is desirable to previously remove static electricity on the surface of the fixing member 2 in order to facilitate the movement of the electrolyte membrane 1 to the mounting table 11 side.

以上、本発明者らによってなされた発明を適用した実施の形態について説明したが、この実施の形態による本発明の開示の一部をなす論述及び図面により本発明は限定されることはない。すなわち、上記実施の形態に基づいて当業者等によりなされる他の実施の形態、実施例及び運用技術等は全て本発明の範疇に含まれることは勿論であることを付け加えておく。   As mentioned above, although the embodiment to which the invention made by the present inventors was applied has been described, the present invention is not limited by the description and the drawings that form part of the disclosure of the present invention according to this embodiment. That is, it should be added that other embodiments, examples, operation techniques, and the like made by those skilled in the art based on the above embodiments are all included in the scope of the present invention.

本発明の一実施形態となる固定装置の構成を示すブロック模式図である。It is a block schematic diagram which shows the structure of the fixing device used as one Embodiment of this invention. 固定部材の側表面への電解質膜の貼付方法を説明するための模式図であり、（ａ）は静電気を利用して貼り付ける方法、（ｂ）は吸引により貼り付ける方法を示す。It is a schematic diagram for demonstrating the sticking method of the electrolyte membrane to the side surface of a fixing member, (a) shows the method of sticking using static electricity, (b) shows the method of sticking by suction. 固定部材の側表面に貼り付けられた電解質膜を載置台に載置する方法を説明するための図である。It is a figure for demonstrating the method to mount the electrolyte membrane affixed on the side surface of a fixing member on a mounting base.

符号の説明Explanation of symbols

１：電解質膜
２：固定部材
３：回転軸
４：モータ
５：台車
６：レール
７：シリンダ
８：電解質膜ロール
９：クリップ部材
１０：カッター部材
１１：載置台 1: Electrolyte membrane 2: Fixed member 3: Rotating shaft 4: Motor 5: Cart 6: Rail 7: Cylinder 8: Electrolyte membrane roll 9: Clip member 10: Cutter member 11: Mounting table

Claims (5)

電解質膜の一方の端部を回転自在に支持された柱状の固定部材の側表面に固定する第１のステップと、
前記固定部材を回転させることにより前記電解質膜を固定部材の側表面に巻き付ける第２のステップと、
前記電解質膜の他方の端部を前記固定部材の側表面に切断して固定する第３のステップと、
前記固定部材を載置台上に移動し、その載置台表面に電解質膜の一方の端部を接触させた後、固定部材を回転させることにより固定部材の側表面に巻き付けられた電解質膜を載置台表面に載置する第４のステップと
を有することを特徴とする燃料電池用電解質膜の載置方法。 A first step of fixing one end of the electrolyte membrane to a side surface of a columnar fixing member that is rotatably supported ;
A second step of winding the electrolyte membrane around a side surface of the fixing member by rotating the fixing member;
A third step of cutting and fixing the other end of the electrolyte membrane to the side surface of the fixing member;
The fixing member is moved onto the mounting table , one end of the electrolyte membrane is brought into contact with the surface of the mounting table, and then the electrolyte film wound around the side surface of the fixing member is rotated by rotating the fixing member. And a fourth step of placing on the surface. 4. A method for placing an electrolyte membrane for a fuel cell. 請求項１に記載の燃料電池用電解質膜の載置方法において、前記第２のステップにおいて、固定部材の側表面に静電気を発生させることにより固定部材の側表面に前記電解質膜を貼り付けることを特徴とする燃料電池用電解質膜の載置方法。   The method for placing an electrolyte membrane for a fuel cell according to claim 1, wherein in the second step, the electrolyte membrane is attached to the side surface of the fixing member by generating static electricity on the side surface of the fixing member. A fuel cell electrolyte membrane mounting method. 請求項１に記載の燃料電池用電解質膜の載置方法において、前記第２のステップにおいて、固定部材の外側から内側方向に吸引することにより固定部材の側表面に前記電解質膜を貼り付けることを特徴とする燃料電池用電解質膜の載置方法。   2. The method for placing an electrolyte membrane for a fuel cell according to claim 1, wherein in the second step, the electrolyte membrane is attached to a side surface of the fixing member by suctioning from the outside to the inside of the fixing member. A fuel cell electrolyte membrane mounting method. 側表面に電解質膜が巻き付けられる柱状の固定部材と、
前記固定部材を、回転軸を介して回転自在に支持する回転機構と、
前記固定部材の側表面に所定距離離間して設けられ、電解質膜の一方を固定する第１の保持部材と、
電解質膜の他方の端部を切断、固定するそれぞれ保持する第１及び第２の保持部材と、
前記固定部材を移動する搬送機構と、
前記搬送機構による固定部材の移動により切断された電解質膜が設置される載置台と
を備えることを特徴とする燃料電池用電解質膜の載置装置。 A columnar fixing member around which an electrolyte membrane is wound on the side surface;
A rotation mechanism that rotatably supports the fixing member via a rotation shaft;
A first holding member provided on the side surface of the fixing member at a predetermined distance and fixing one of the electrolyte membranes ;
First and second holding members for holding and cutting the other end of the electrolyte membrane, respectively;
A transport mechanism for moving the fixing member;
An apparatus for mounting an electrolyte membrane for a fuel cell, comprising: a mounting table on which an electrolyte membrane cut by movement of a fixing member by the transport mechanism is installed . 請求項４に記載の燃料電池用電解質膜の載置装置において、前記固定部材は楕円の断面形状を有する柱状部材であり、当該柱状部材の側表面に電解質膜が巻き付けられることを特徴とする燃料電池用電解質膜の載置装置。   6. The fuel cell mounting device according to claim 4, wherein the fixing member is a columnar member having an elliptical cross-sectional shape, and the electrolyte membrane is wound around a side surface of the columnar member. Battery electrolyte membrane mounting device.
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