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JP2009295437A - Crimp type cell of fuel cell - Google Patents

Crimp type cell of fuel cell Download PDF

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Publication number
JP2009295437A
JP2009295437A JP2008148350A JP2008148350A JP2009295437A JP 2009295437 A JP2009295437 A JP 2009295437A JP 2008148350 A JP2008148350 A JP 2008148350A JP 2008148350 A JP2008148350 A JP 2008148350A JP 2009295437 A JP2009295437 A JP 2009295437A
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current collecting
side current
electrode side
collecting mechanism
current collector
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Kazuya Akiyama
一也 秋山
Takahisa Masashiro
尊久 正代
Akihiro Miyasaka
明宏 宮坂
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Nippon Telegraph and Telephone Corp
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Nippon Telegraph and Telephone Corp
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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

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Abstract

<P>PROBLEM TO BE SOLVED: To make crimping and disassembly very easy and reduce the number of used components. <P>SOLUTION: A passage 8 through which fuel flows is formed in a fuel electrode side current collecting mechanism 1 and a vent hole 9 through which an oxidant is taken in is formed in an air electrode side current collecting mechanism 2. The fuel electrode-side current collecting mechanism 1 and the air electrode-side current collecting mechanism 2 are connected with pins 6 inserted into a loose-pin hinge 5 of the fuel electrode-side current collecting mechanism 1 and a loose-pin hinge 5' of the air electrode-side current collecting mechanism 2; ribs 3 are formed in the fuel electrode-side current collecting mechanism 1 and the air electrode-side current collecting mechanism 2; the loose-pin hinges 5 and 5' are insulated with a rubber O ring 4; and by inserting the pins 6 into pin insertion holes 7, the fuel electrode-side current collecting mechanism 1 and the air electrode-side current collecting mechanism 2 are crimped for contact to a membrane-electrode assembly 10. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、膜電極複合体（ＭＥＡ）が第1の集電部と第２の集電部とで挟持された圧着式燃料電池セルに関するものである。   The present invention relates to a crimped fuel cell in which a membrane electrode assembly (MEA) is sandwiched between a first current collector and a second current collector.

近年、情報化社会を支える携帯用電子機器の電源として、単発の発電装置として効率がよいことから、燃料電池に対する期待が高まっている。燃料電池は、燃料の有している化学エネルギーを熱に変えることなく、電気化学的に直接電気エネルギーに変換する装置であり、従来より種々の構造のものが提案されている。   In recent years, as a power source for portable electronic devices that support an information-oriented society, the efficiency of a single power generation device is high, and therefore, expectations for fuel cells are increasing. BACKGROUND ART A fuel cell is a device that directly converts chemical energy of a fuel into electrical energy without converting it into heat, and various types of structures have been conventionally proposed.

図１３は、従来技術に係る圧着式燃料電池セルの構成図である。この圧着式燃料電池セルにおいては、空気極側集電機構１０２、空気極側集電機構１０２の下部に配置された膜電極複合体および燃料極側集電機構は、空気極側集電機構１０２の周囲に設置されたボルト１０１によって圧着されている。このようにボルト１０１によって圧着されている場合には、ボルト１０１を取り外すことが可能であるため、空気極側集電機構１０２、空気極側集電機構１０２の下部に配置された膜電極複合体および燃料極側集電機構を分解することが可能であり、必要に応じて構成される部品をメンテナンスすることが可能となる。
第１１回燃料電池システムシンポジウム講演予稿集、「ＭＨ水素貯蔵タンク一体型マイクロＰＥＦＣの開発」 FIG. 13 is a configuration diagram of a crimped fuel cell according to the prior art. In this crimp type fuel cell, the air electrode side current collecting mechanism 102, the membrane electrode composite disposed under the air electrode side current collecting mechanism 102 and the fuel electrode side current collecting mechanism are the air electrode side current collecting mechanism 102. It is crimped by bolts 101 installed around the. When the bolt 101 is crimped in this way, the bolt 101 can be removed, so that the air electrode side current collecting mechanism 102 and the membrane electrode assembly disposed below the air electrode side current collecting mechanism 102 In addition, it is possible to disassemble the fuel electrode side current collecting mechanism, and it is possible to maintain components that are configured as necessary.
Proceedings of 11th Fuel Cell System Symposium “Development of MH Hydrogen Storage Tank Integrated Micro PEFC”

しかしながら、上述した従来技術に係る圧着式燃料電池セルの圧着機構においては、ボルト１０１を用いて各部品を圧着した場合、多数のボルト１０１を使用することから、圧着および分解の際に多くの時間が必要であることや、部品点数が増加し圧着式燃料電池セルのコストが上昇してしまうという問題点がある。   However, in the above-described crimping mechanism of the crimping type fuel cell according to the prior art, when each component is crimped using the bolt 101, a large number of bolts 101 are used. Is required, and the number of parts increases, resulting in an increase in the cost of the crimped fuel cell.

本発明は、上述の課題を解決するためになされたものであり、圧着および分解がきわめて容易であり、かつ使用する部品点数の少ない圧着式燃料電池セルを提供することを目的とする。   The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a pressure-bonding type fuel cell that is extremely easy to be crimped and disassembled and uses a small number of parts.

この目的を達成するため、本発明においては、膜電極複合体が第１の集電部と第２の集電部とで挟持された圧着式燃料電池セルにおいて、上記第１の集電部と上記第２の集電部との相対する周辺接合部に上記膜電極複合体に上記第１、第２の集電部を圧着するための圧着構造を備えたことを特徴とする。   In order to achieve this object, in the present invention, in the pressure-bonded fuel cell in which the membrane electrode assembly is sandwiched between the first current collector and the second current collector, the first current collector and A crimping structure for crimping the first and second current collectors to the membrane electrode assembly is provided at a peripheral joint opposite to the second current collector.

この場合、上記第１の集電部の上記周辺接合部は、第１の抜き蝶番を備え、上記第２の集電部の上記周辺接合部は、第２の抜き蝶番を備え、上記第１の抜き蝶番と、上記第２の抜き蝶番とにピンを挿入した上記圧着構造を備えたことを特徴としてもよい。   In this case, the peripheral junction of the first current collector includes a first extraction hinge, and the peripheral junction of the second current collector includes a second extraction hinge, the first The crimping structure in which a pin is inserted into the second hinge and the second hinge may be provided.

また、上記第１の集電部の上記周辺接合部は、円柱状の被係止部を備え、上記第２の集電部の上記周辺接合部は、半円筒状の係止部を備え、上記被係止部の外周部に上記係止部を係合した上記圧着構造を備えたことを特徴としてもよい。   Further, the peripheral joint portion of the first current collector includes a columnar locked portion, and the peripheral joint portion of the second current collector includes a semi-cylindrical lock portion, The crimping structure in which the locking portion is engaged with the outer peripheral portion of the locked portion may be provided.

また、上記第２の集電部の上記周辺接合部は、矩形状の第１の突起部と、先端が反り返った第２の突起部とを備え、上記第１の集電部の上記周辺接合部は、上記第１の突起部を挿入可能な切れ込みと、ピンを挿入可能なピン挿入部とを備え、上記ピン挿入部に上記ピンを挿入し、かつ上記切れ込みに上記第１の突起部を挿入し、かつ上記第２の突起部の外面と上記ピンとを当接した上記圧着構造を備えたことを特徴としてもよい。   The peripheral junction of the second current collector includes a rectangular first protrusion and a second protrusion having a curved tip, and the peripheral junction of the first current collector. The portion includes a notch into which the first protrusion can be inserted and a pin insertion portion into which a pin can be inserted. The pin is inserted into the pin insertion portion, and the first protrusion is inserted into the notch. The crimping structure may be characterized in that the crimping structure is inserted and the outer surface of the second protrusion is in contact with the pin.

また、上記第１の集電部の上記周辺接合部と、上記第２の集電部の上記周辺接合部とは、反り返り、上記第１の集電部の厚さと、上記第２の集電部の厚さと、上記膜電極複合体の厚さとの和よりも大きい寸法のスリットと、上記圧着式燃料電池セルを挿入可能な空間とを備えたクリップの上記スリットの間に上記第１の集電部と、上記第２の集電部と、上記膜電極複合体とを挟み込んだ上記圧着構造を備えたことを特徴としてもよい。   The peripheral junction of the first current collector and the peripheral junction of the second current collector are warped, the thickness of the first current collector, and the second current collector. Between the slit of a clip having a slit having a size larger than the sum of the thickness of the portion and the thickness of the membrane electrode assembly and a space into which the crimp type fuel cell can be inserted. The pressure-bonding structure may be characterized in that an electric part, the second current collecting part, and the membrane electrode assembly are sandwiched therebetween.

これらの場合、上記第１の集電部の周辺部、上記第２の集電部の周辺部の少なくとも一方に、リブを備えたことを特徴としてもよい。   In these cases, at least one of the peripheral portion of the first current collector and the peripheral portion of the second current collector may be provided with a rib.

また、上記第１の集電部の中心部、上記第２の集電部の中心部の少なくとも一方に、リブを備えたことを特徴としてもよい。   Further, a rib may be provided in at least one of the central portion of the first current collector and the central portion of the second current collector.

この場合、上記リブは、クロス状、十字状または井形状であることを特徴としてもよい。   In this case, the rib may have a cross shape, a cross shape, or a well shape.

これらの場合、上記第１の集電部は、燃料極側集電部であり、上記第２の集電部は、空気極側集電部であることを特徴としてもよい。   In these cases, the first current collector may be a fuel electrode side current collector, and the second current collector may be an air electrode side current collector.

また、上記第１の集電部は、空気極側集電部であり、上記第２の集電部は、燃料極側集電部であることを特徴としてもよい。   Further, the first current collector may be an air electrode side current collector, and the second current collector may be a fuel electrode side current collector.

本発明に係る圧着式燃料電池セルにおいては、第１の集電部と第２の集電部との相対する周辺接合部に膜電極複合体に第１、第２の集電部を圧着するための構造を有しているから、圧着および分解が容易であり、かつ使用する部品点数を少なくすることができる。   In the pressure-bonded fuel cell according to the present invention, the first and second current collectors are pressure-bonded to the membrane electrode assembly at the peripheral joint between the first current collector and the second current collector. Therefore, pressure bonding and disassembly are easy, and the number of parts to be used can be reduced.

また、第１の抜き蝶番と、第２の抜き蝶番とにピンを挿入する場合には、圧着式燃料電池セルをきわめて容易に圧着および分解することができる。   In addition, when a pin is inserted into the first extraction hinge and the second extraction hinge, the pressure-bonding type fuel cell can be bonded and disassembled very easily.

また、第１の集電部集電部の周辺接合部に備えた円柱状の被係止部の外周部に第２の集電部集電部の周辺接合部に備えた半円筒状の係止部を係合する場合には、圧着式燃料電池セルをきわめて容易に圧着および分解することができる。   In addition, a semi-cylindrical engagement provided at the peripheral junction of the second current collector and the outer peripheral portion of the columnar locked portion provided at the peripheral junction of the first current collector. When engaging the stop, the crimped fuel cell can be crimped and disassembled very easily.

また、ピン挿入部にピンを挿入し、かつ切れ込みに第１の突起部を挿入し、かつ第２の突起部の外面とピンとを当接する場合には、圧着式燃料電池セルをきわめて容易に圧着および分解することができる。   In addition, when a pin is inserted into the pin insertion portion, the first protrusion is inserted into the notch, and the outer surface of the second protrusion is in contact with the pin, the crimped fuel cell is very easily crimped. And can be disassembled.

また、第１の集電部の厚さと、第２の集電部の厚さと、膜電極複合体の厚さとの和よりも大きい寸法のスリットと、圧着式燃料電池セルを挿入可能な空間とを備えたクリップのスリットに周辺接合部が反り返った第１の集電部と、周辺接合部が反り返った第２の集電部と、膜電極複合体とを挟み込む場合には、圧着式燃料電池セルをきわめて容易に圧着および分解することができる。   A slit having a dimension larger than the sum of the thickness of the first current collector, the thickness of the second current collector, and the thickness of the membrane electrode assembly; and a space into which the crimp type fuel cell can be inserted. In the case of sandwiching the first current collecting part in which the peripheral joint part is warped in the slit of the clip provided with, the second current collecting part in which the peripheral joint part is warped, and the membrane electrode assembly, The cell can be crimped and disassembled very easily.

また、第１の集電部の周辺部もしくは中心部、上記第２の集電部の周辺部もしくは中心部の少なくとも一方に、リブを備える場合には、第１の集電部、第２の集電部の少なくとも一方が撓むことを防止することができるから、第１の集電部、第２の集電部の少なくとも一方の圧着圧力の低下を防止することができる。   In addition, in the case where a rib is provided on the periphery or the center of the first current collector, or at least one of the periphery or the center of the second current collector, the first current collector, the second Since at least one of the current collectors can be prevented from bending, it is possible to prevent a decrease in the pressure bonding pressure of at least one of the first current collector and the second current collector.

（第１の実施の形態）
最初に、図１を用いて、本発明に係る圧着式燃料電池セルの構成について説明する。図１は本発明に係る圧着式燃料電池セルの模式図であり、圧着していない状態を示している。燃料極側集電機構（第１の集電部、燃料極側集電部）１は燃料を流すための流路８を備え、空気極側集電機構（第２の集電部、空気極側集電部）２は酸化剤を取り入れるための通気穴９を備えており、紙面左側の燃料極側集電機構１の周辺接合部に備えられた抜き蝶番５（第１の抜き蝶番）および空気極側集電機構２の周辺接合部に備えられた５´（第２の抜き蝶番）に挿入されたピン６によって燃料極側集電機構１と空気極側集電機構２とが連結されているため、空気極側集電機構２の開閉が可能となる。この状態では、紙面右側のピン挿入孔７にピン６は挿入されていない。 (First embodiment)
Initially, the structure of the crimping | compression-bonding type fuel cell which concerns on this invention is demonstrated using FIG. FIG. 1 is a schematic view of a pressure-bonding type fuel cell according to the present invention, showing a state where pressure-bonding is not performed. The fuel electrode side current collecting mechanism (first current collecting unit, fuel electrode side current collecting unit) 1 includes a flow path 8 for flowing fuel, and the air electrode side current collecting mechanism (second current collecting unit, air electrode). The side current collector 2) has a vent hole 9 for taking in an oxidant, and a removal hinge 5 (first extraction hinge) provided at a peripheral junction of the fuel electrode side current collection mechanism 1 on the left side of the page. The fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 are connected to each other by a pin 6 inserted in a 5 ′ (second extraction hinge) provided at a peripheral joint portion of the air electrode side current collecting mechanism 2. Therefore, the air electrode side current collecting mechanism 2 can be opened and closed. In this state, the pin 6 is not inserted into the pin insertion hole 7 on the right side of the drawing.

燃料極側集電機構１および空気極側集電機構２の材質としてはステンレス、アルミニウム、チタン等の薄い金属を用いることが可能であり、これらの金属は導電性が高く、かつその表面は耐食性を持つことが望ましい。さらに膜電極複合体１０との接触抵抗の低減と耐食性の向上を目的として、金メッキ等の耐食コーティングを施すことも有効である。燃料極側集電機構１および空気極側集電機構２を圧着式燃料電池セルの電極として使用するため、燃料極側集電機構１と空気極側集電機構２の抜き蝶番５および５´は、ゴム製のＯリング４で絶縁されている。Ｏリング４の材質としてはゴムのほかにシリコン樹脂やフッ素樹脂等の絶縁物であれば使用可能である。ピン６も抜き蝶番５および５´と絶縁するために、樹脂等の絶縁物である必要があるが、ステンレス等の導電性の材質の周囲を絶縁加工して使用することも可能であるし、また抜き蝶番５および５´の内部を絶縁することによって、金属等の導電性の材質を直接使用することも可能である。燃料極側集電機構１および空気極側集電機構２は、燃料を流路８に供給した際に、燃料の圧力と大気圧の差によって、燃料極側集電機構１および空気極側集電機構２が撓んでしまうことを防止する目的で、リブ３が燃料極側集電機構１および空気極側集電機構２の２つの周辺部にそれぞれ備えられている。なお、リブ３の断面は円弧、円弧を複数繋げた形状または多角形が有効である。   As materials for the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2, thin metals such as stainless steel, aluminum, and titanium can be used. These metals have high conductivity, and their surfaces have corrosion resistance. It is desirable to have It is also effective to apply a corrosion resistant coating such as gold plating for the purpose of reducing the contact resistance with the membrane electrode assembly 10 and improving the corrosion resistance. Since the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 are used as electrodes of the crimp type fuel cell, the hinges 5 and 5 'of the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 are removed. Is insulated by a rubber O-ring 4. As the material of the O-ring 4, any insulator such as silicon resin or fluorine resin can be used in addition to rubber. In order to insulate the pin 6 from the hinges 5 and 5 ', it is necessary to be an insulator such as a resin, but it is also possible to use an insulating material around a conductive material such as stainless steel. It is also possible to directly use a conductive material such as metal by insulating the inside of the extraction hinges 5 and 5 '. When the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 supply the fuel to the flow path 8, the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 depend on the difference between the fuel pressure and the atmospheric pressure. In order to prevent the electric mechanism 2 from being bent, ribs 3 are provided in two peripheral portions of the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2, respectively. In addition, the cross section of the rib 3 is effectively an arc, a shape in which a plurality of arcs are connected, or a polygon.

図２は本発明に係る圧着式燃料電池セルの模式図であり、圧着した状態を示している。紙面右側の抜き蝶番５および５´にピン６を挿入することによって、膜電極複合体１０に燃料極側集電機構１、空気極側集電機構２を圧着した状態を保持することが可能となる。また、紙面右側の抜き蝶番５および５´からピン６を抜くことによって、膜電極複合体１０と、燃料極側集電機構１と、空気極側集電機構２とを分解することが可能となる。   FIG. 2 is a schematic view of a pressure-bonding fuel cell according to the present invention, showing a state where it is pressure-bonded. By inserting the pin 6 into the extraction hinges 5 and 5 'on the right side of the paper, it is possible to maintain the state where the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 are pressure-bonded to the membrane electrode assembly 10. Become. In addition, the membrane electrode assembly 10, the fuel electrode side current collecting mechanism 1, and the air electrode side current collecting mechanism 2 can be disassembled by removing the pins 6 from the extraction hinges 5 and 5 'on the right side of the paper. Become.

本実施の形態においては、燃料極側集電機構１と空気極側集電機構２との相対する周辺接合部に膜電極複合体１０に燃料極側集電機構１、空気極側集電機構２を圧着するための圧着構造を有しているから、燃料極側集電機構１、空気極側集電機構２と膜電極複合体１０との圧着および分解を繰り返し行うことが容易であり、かつ使用する部品点数を少なくすることができる。すなわち、膜電極複合体１０が燃料極側集電機構１と空気極側集電機構２とで挟持された圧着式燃料電池セルにおいて、燃料極側集電機構１と空気極側集電機構２自体に圧着かつ分解を可能とする圧着構造を設けているから、部品点数を増やすことなく、圧着により圧着式燃料電池セルの抵触抵抗を低減でき、かつ圧着式燃料電池セルを構成する各部材の着脱、交換等のメンテナンスを容易に行うことができる。   In the present embodiment, the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism are provided on the membrane electrode assembly 10 at the peripheral peripheral joint between the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2. 2 has a crimping structure for crimping 2, it is easy to repeatedly press and disassemble the fuel electrode side current collecting mechanism 1, the air electrode side current collecting mechanism 2 and the membrane electrode assembly 10, In addition, the number of parts used can be reduced. That is, in the pressure-bonding type fuel cell in which the membrane electrode assembly 10 is sandwiched between the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2, the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 are used. Since the crimping structure enabling crimping and disassembly is provided in itself, it is possible to reduce the contact resistance of the crimping fuel cell by crimping without increasing the number of parts, and each member constituting the crimping fuel cell. Maintenance such as attachment / detachment and replacement can be easily performed.

また、抜き蝶番５と、抜き蝶番５´とにピン６を挿入することにより、膜電極複合体１０に燃料極側集電機構１、空気極側集電機構２を圧着することができるから、きわめて容易に圧着式燃料電池セルを圧着することができ、また、抜き蝶番５および５´からピン６を抜くことにより、膜電極複合体１０と、燃料極側集電機構１と、空気極側集電機構２とを分解することができるから、きわめて容易に圧着式燃料電池セルを分解することができる。   Further, by inserting the pin 6 into the extraction hinge 5 and the extraction hinge 5 ′, the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 can be pressure-bonded to the membrane electrode assembly 10. The crimp type fuel cell can be crimped very easily, and the membrane electrode assembly 10, the fuel electrode side current collecting mechanism 1, the air electrode side can be obtained by removing the pin 6 from the extraction hinges 5 and 5 '. Since the current collecting mechanism 2 can be disassembled, the crimp type fuel cell can be disassembled very easily.

また、燃料極側集電機構１の周辺部および空気極側集電機構２の周辺部に、リブ３を備えているから、燃料極側集電機構１および空気極側集電機構２が撓むことを防止することができるので、燃料極側集電機構１および空気極側集電機構２の圧着圧力の低下を防止することができる。   Moreover, since the rib 3 is provided in the peripheral part of the fuel electrode side current collecting mechanism 1 and the peripheral part of the air electrode side current collecting mechanism 2, the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 are bent. Therefore, it is possible to prevent a decrease in pressure bonding pressure of the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2.

（第２の実施の形態）
続いて、図３を用いて、本発明に係る他の圧着式燃料電池セルの構成について説明する。ここでは、上述した第１の実施の形態に係る圧着式燃料電池セルと異なる構成を中心に説明する。図３は本発明に係る他の圧着式燃料電池セルの模式図であり、圧着していない状態を示している。なお、図３においては、説明の便宜のため、空気極側集電機構２を突起１１に沿って紙面上側に少しずらした状態を示しており、また、膜電極複合体１０を図示していない。燃料極側集電機構１の４つの周辺接合部にそれぞれ円柱状の突起（被係止部）１１を備え、空気極側集電機構２には突起１１に対応する部分に半円筒状の円弧部（係止部）１２を備えているため、突起１１の外周部に円弧部１２を係合して、空気極側集電機構２に燃料極側集電機構１をはめ込むことによって、膜電極複合体１０に燃料極側集電機構１、空気極側集電機構２を圧着した状態を保持することが可能となる。また、突起１１の外周部から円弧部１２を取り外すことによって、膜電極複合体１０と、燃料極側集電機構１と、空気極側集電機構２とを分解することが可能となる。 (Second Embodiment)
Next, the configuration of another crimp type fuel cell according to the present invention will be described with reference to FIG. Here, it demonstrates centering on a different structure from the crimping | compression-bonding type fuel cell which concerns on 1st Embodiment mentioned above. FIG. 3 is a schematic view of another crimp type fuel cell according to the present invention, and shows a state where no crimping is performed. In FIG. 3, for convenience of explanation, the air electrode side current collecting mechanism 2 is slightly shifted upward along the paper surface along the protrusions 11, and the membrane electrode assembly 10 is not illustrated. . Each of the four peripheral joints of the fuel electrode side current collecting mechanism 1 is provided with columnar protrusions (locked portions) 11, and the air electrode side current collecting mechanism 2 has a semi-cylindrical arc at a portion corresponding to the protrusions 11. Since the arc portion 12 is engaged with the outer peripheral portion of the protrusion 11 and the fuel electrode side current collecting mechanism 1 is fitted into the air electrode side current collecting mechanism 2, the membrane electrode is provided. It is possible to maintain the state in which the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 are pressure-bonded to the composite body 10. Further, by removing the arc portion 12 from the outer peripheral portion of the protrusion 11, the membrane electrode assembly 10, the fuel electrode side current collecting mechanism 1, and the air electrode side current collecting mechanism 2 can be disassembled.

燃料極側集電機構１および空気極側集電機構２の材質としてはステンレス、アルミニウム、チタン等の薄い金属を用いることが可能であり、これらの金属は導電性が高く、かつその表面は耐食性を持つことが望ましく、円弧部１２を備える空気極側集電機構２の材質は、適度なばね性が必要となる。また、膜電極複合体１０との接触抵抗の低減および耐食性の向上を目的として、燃料極側集電機構１および空気極側集電機構２の表面に金メッキ等の耐食コーティングを施すことも有効である。燃料極側集電機構１および空気極側集電機構２を圧着式燃料電池セルの電極として使用するため、突起１１および円弧部１２は絶縁されている。   As materials for the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2, thin metals such as stainless steel, aluminum, and titanium can be used. These metals have high conductivity, and their surfaces have corrosion resistance. It is desirable that the material of the air electrode side current collecting mechanism 2 including the arc portion 12 needs to have an appropriate spring property. It is also effective to apply a corrosion-resistant coating such as gold plating on the surfaces of the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 for the purpose of reducing the contact resistance with the membrane electrode assembly 10 and improving the corrosion resistance. is there. Since the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 are used as electrodes of the pressure-bonding type fuel cell, the protrusion 11 and the arc portion 12 are insulated.

本実施の形態においては、燃料極側集電機構１の周辺接合部に備えた突起１１の外周部に空気極側集電機構２の周辺接合部に備えた円弧部１２を係合することにより、膜電極複合体１０に燃料極側集電機構１、空気極側集電機構２を圧着することができるから、きわめて容易に圧着式燃料電池セルを圧着することができ、また、燃料極側集電機構１の周辺接合部に備えた突起１１の外周部から空気極側集電機構２の周辺接合部に備えた円弧部１２を取り外すことにより、膜電極複合体１０と、燃料極側集電機構１と、空気極側集電機構２とを分解することができるから、きわめて容易に圧着式燃料電池セルを分解することができる。   In the present embodiment, the circular arc portion 12 provided at the peripheral joint portion of the air electrode side current collecting mechanism 2 is engaged with the outer peripheral portion of the protrusion 11 provided at the peripheral joint portion of the fuel electrode side current collecting mechanism 1. Since the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 can be pressure-bonded to the membrane electrode assembly 10, the pressure-bonding type fuel cell can be pressure-bonded very easily. By removing the arc portion 12 provided at the peripheral joint portion of the air electrode side current collecting mechanism 2 from the outer peripheral portion of the protrusion 11 provided at the peripheral joint portion of the current collecting mechanism 1, the membrane electrode assembly 10 and the fuel electrode side current collector are collected. Since the electric mechanism 1 and the air electrode side current collecting mechanism 2 can be disassembled, the crimp type fuel cell can be disassembled very easily.

（第３の実施の形態）
続いて、図４を用いて、本発明に係る他の圧着式燃料電池セルの構成について説明する。ここでは、上述した第２の実施の形態に係る圧着式燃料電池セルと異なる構成を中心に説明する。図４は本発明に係る他の圧着式燃料電池セルの模式図であり、圧着していない状態を示している。なお、図４においては、説明の便宜のため、空気極側集電機構２を突起１１に沿って紙面上側に少しずらした状態を示しており、また、膜電極複合体１０を図示していない。燃料極側集電機構１の２つの周辺接合部にそれぞれ突起１１を備え、空気極側集電機構２には突起１１に対応する部分に円弧部１２を備えているため、空気極側集電機構２に燃料極側集電機構１をはめ込むことによって、膜電極複合体１０に燃料極側集電機構１、空気極側集電機構２を圧着した状態を保持することが可能となる。また、空気極側集電機構２から燃料極側集電機構１を取り外すことによって、膜電極複合体１０と、燃料極側集電機構１と、空気極側集電機構２とを分解することが可能となる。本実施の形態は上述した第２の実施の形態と異なり、燃料極側集電機構１の２つの周辺部に撓み防止のためのリブ３、空気極側集電機構２の２つの周辺部に撓み防止のためのリブ３をそれぞれ備えていることを特徴とする。 (Third embodiment)
Next, the configuration of another crimp type fuel cell according to the present invention will be described with reference to FIG. Here, it demonstrates centering on a different structure from the crimping | compression-bonding type fuel cell which concerns on 2nd Embodiment mentioned above. FIG. 4 is a schematic view of another crimp type fuel cell according to the present invention, and shows a state where no crimping is performed. For convenience of explanation, FIG. 4 shows a state where the air electrode side current collecting mechanism 2 is slightly shifted to the upper side of the drawing along the protrusions 11, and the membrane electrode assembly 10 is not shown. . Since each of the two peripheral joints of the fuel electrode side current collecting mechanism 1 is provided with a protrusion 11 and the air electrode side current collecting mechanism 2 is provided with an arc portion 12 at a portion corresponding to the protrusion 11, the air electrode side current collecting mechanism is provided. By fitting the fuel electrode side current collecting mechanism 1 into the mechanism 2, it is possible to maintain a state in which the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 are pressure-bonded to the membrane electrode assembly 10. Also, the membrane electrode assembly 10, the fuel electrode side current collecting mechanism 1, and the air electrode side current collecting mechanism 2 are disassembled by removing the fuel electrode side current collecting mechanism 1 from the air electrode side current collecting mechanism 2. Is possible. This embodiment is different from the second embodiment described above in that two peripheral portions of the fuel electrode side current collecting mechanism 1 are provided with ribs 3 for preventing bending and two peripheral portions of the air electrode side current collecting mechanism 2 are provided. Each is provided with a rib 3 for preventing bending.

燃料極側集電機構１および空気極側集電機構２の材質としてはステンレス、アルミニウム、チタン等の薄い金属を用いることが可能であり、これらの金属は導電性が高く、かつその表面は耐食性を持つことが望ましく、円弧部１２を備える空気極側集電機構２の材質は、適度なばね性が必要となる。また、膜電極複合体１０との接触抵抗の低減および耐食性の向上を目的として、燃料極側集電機構１および空気極側集電機構２の表面に金メッキ等の耐食コーティングを施すことも有効である。燃料極側集電機構１および空気極側集電機構２を圧着式燃料電池セルの電極として使用するため、突起１１および円弧部１２は絶縁されている。燃料極側集電機構１および空気極側集電機構２は、燃料を流路８に供給した際に、燃料の圧力と大気圧の差によって、燃料極側集電機構１および空気極側集電機構２が撓んでしまうことを防止する目的で、リブ３が燃料極側集電機構１および空気極側集電機構２に備えられている。なお、リブ３の断面は円弧、円弧を複数繋げた形状または多角形が有効である。   As materials for the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2, thin metals such as stainless steel, aluminum, and titanium can be used. These metals have high conductivity, and their surfaces have corrosion resistance. It is desirable that the material of the air electrode side current collecting mechanism 2 including the arc portion 12 needs to have an appropriate spring property. It is also effective to apply a corrosion-resistant coating such as gold plating on the surfaces of the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 for the purpose of reducing the contact resistance with the membrane electrode assembly 10 and improving the corrosion resistance. is there. Since the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 are used as electrodes of the pressure-bonding type fuel cell, the protrusion 11 and the arc portion 12 are insulated. When the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 supply the fuel to the flow path 8, the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 depend on the difference between the fuel pressure and the atmospheric pressure. The rib 3 is provided in the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 for the purpose of preventing the electric mechanism 2 from being bent. In addition, the cross section of the rib 3 is effectively an arc, a shape in which a plurality of arcs are connected, or a polygon.

本実施の形態においては、燃料極側集電機構１の周辺接合部に備えた突起１１の外周部に空気極側集電機構２の周辺接合部に備えた円弧部１２を係合することにより、膜電極複合体１０に燃料極側集電機構１、空気極側集電機構２を圧着することができるから、きわめて容易に圧着式燃料電池セルを圧着することができ、また、燃料極側集電機構１の周辺接合部に備えた突起１１の外周部から空気極側集電機構２の周辺接合部に備えた円弧部１２を取り外すことにより、膜電極複合体１０と、燃料極側集電機構１と、空気極側集電機構２とを分解することができるから、きわめて容易に圧着式燃料電池セルを分解することができる。   In the present embodiment, the circular arc portion 12 provided at the peripheral joint portion of the air electrode side current collecting mechanism 2 is engaged with the outer peripheral portion of the protrusion 11 provided at the peripheral joint portion of the fuel electrode side current collecting mechanism 1. Since the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 can be pressure-bonded to the membrane electrode assembly 10, the pressure-bonding type fuel cell can be pressure-bonded very easily. By removing the arc portion 12 provided at the peripheral joint portion of the air electrode side current collecting mechanism 2 from the outer peripheral portion of the protrusion 11 provided at the peripheral joint portion of the current collecting mechanism 1, the membrane electrode assembly 10 and the fuel electrode side current collector are collected. Since the electric mechanism 1 and the air electrode side current collecting mechanism 2 can be disassembled, the crimp type fuel cell can be disassembled very easily.

また、リブ３により、燃料極側集電機構１および空気極側集電機構２の圧着圧力の低下を防止することができる。   Further, the rib 3 can prevent the pressure-bonding pressure of the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 from being lowered.

（第４の実施の形態）
続いて、図５を用いて、本発明に係る他の圧着式燃料電池セルの構成について説明する。図５は本発明に係る他の圧着式燃料電池セルの模式図であり、圧着していない状態を示している。なお、図５においては、説明の便宜のため膜電極複合体１０を図示していない。本実施の形態は、上述した第１の実施の形態と第３の実施の形態とを組み合わせたものである。抜き蝶番５および５´によって空気極側集電機構２の開閉が可能となり、燃料極側集電機構１の２つの周辺接合部にそれぞれ備えられた突起１１と、空気極側集電機構２の２つの周辺接合部にそれぞれ備えられた突起１１に対応する円弧部１２とを備えているため、空気極側集電機構２に燃料極側集電機構１をはめ込むことによって、膜電極複合体１０に燃料極側集電機構１、空気極側集電機構２を圧着した状態を保持することが可能となる。また、空気極側集電機構２から燃料極側集電機構１を取り外すことによって、膜電極複合体１０と、燃料極側集電機構１と、空気極側集電機構２とを分解することが可能となる。 (Fourth embodiment)
Next, the configuration of another crimp type fuel cell according to the present invention will be described with reference to FIG. FIG. 5 is a schematic view of another crimp type fuel cell according to the present invention, and shows a state where no crimping is performed. In FIG. 5, the membrane electrode assembly 10 is not shown for convenience of explanation. This embodiment is a combination of the first embodiment and the third embodiment described above. The extraction hinges 5 and 5 ′ allow the air electrode side current collecting mechanism 2 to be opened and closed. The protrusions 11 provided at the two peripheral joints of the fuel electrode side current collecting mechanism 1, and the air electrode side current collecting mechanism 2 Since the arc peripheral portion 12 corresponding to the protrusion 11 provided in each of the two peripheral joint portions is provided, the membrane electrode assembly 10 is obtained by fitting the fuel electrode side current collecting mechanism 1 into the air electrode side current collecting mechanism 2. In addition, it is possible to maintain the state in which the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 are pressed. Also, the membrane electrode assembly 10, the fuel electrode side current collecting mechanism 1, and the air electrode side current collecting mechanism 2 are disassembled by removing the fuel electrode side current collecting mechanism 1 from the air electrode side current collecting mechanism 2. Is possible.

燃料極側集電機構１および空気極側集電機構２の材質としてはステンレス、アルミニウム、チタン等の薄い金属を用いることが可能であり、これらの金属は導電性が高く、かつその表面は耐食性を持つことが望ましく、円弧部１２を備える空気極側集電機構２の材質は、適度なばね性が必要となる。また、膜電極複合体１０との接触抵抗の低減および耐食性の向上を目的として、燃料極側集電機構１および空気極側集電機構２の表面に金メッキ等の耐食コーティングを施すことも有効である。燃料極側集電機構１および空気極側集電機構２を圧着式燃料電池セルの電極として使用するため、突起１１および円弧部１２は絶縁されている。また、燃料極側集電機構１と空気極側集電機構２の抜き蝶番５および５´は、ゴム製のＯリング４で絶縁されている。Ｏリング４の材質としてはゴムのほかにシリコン樹脂やフッ素樹脂等の絶縁物であれば使用可能である。ピン６も抜き蝶番５および５´と絶縁するために、樹脂等の絶縁物である必要があるが、ステンレス等の導電性の材質の周囲を絶縁加工して使用することも可能であるし、また抜き蝶番５および５´の内部を絶縁することによって、金属等の導電性の材質を直接使用することも可能である。燃料極側集電機構１および空気極側集電機構２は、燃料を流路８に供給した際に、燃料の圧力と大気圧の差によって、燃料極側集電機構１および空気極側集電機構２が撓んでしまうことを防止する目的で、リブ３が燃料極側集電機構１および空気極側集電機構２の２つの周辺部にそれぞれ備えられている。なお、リブ３の断面は円弧、円弧を複数繋げた形状または多角形が有効である。   As materials for the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2, thin metals such as stainless steel, aluminum, and titanium can be used. These metals have high conductivity, and their surfaces have corrosion resistance. It is desirable that the material of the air electrode side current collecting mechanism 2 including the arc portion 12 needs to have an appropriate spring property. It is also effective to apply a corrosion-resistant coating such as gold plating on the surfaces of the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 for the purpose of reducing the contact resistance with the membrane electrode assembly 10 and improving the corrosion resistance. is there. Since the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 are used as electrodes of the pressure-bonding type fuel cell, the protrusion 11 and the arc portion 12 are insulated. Further, the extraction hinges 5 and 5 ′ of the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 are insulated by a rubber O-ring 4. As the material of the O-ring 4, any insulator such as silicon resin or fluorine resin can be used in addition to rubber. In order to insulate the pin 6 from the hinges 5 and 5 ', it is necessary to be an insulator such as a resin, but it is also possible to use an insulating material around a conductive material such as stainless steel. It is also possible to directly use a conductive material such as metal by insulating the inside of the extraction hinges 5 and 5 '. When the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 supply the fuel to the flow path 8, the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 depend on the difference between the fuel pressure and the atmospheric pressure. In order to prevent the electric mechanism 2 from being bent, ribs 3 are provided in two peripheral portions of the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2, respectively. In addition, the cross section of the rib 3 is effectively an arc, a shape in which a plurality of arcs are connected, or a polygon.

本実施の形態においては、抜き蝶番５と、抜き蝶番５´とにピン６を挿入し、かつ突起１１に円弧部１２をはめ込むことにより、膜電極複合体１０に燃料極側集電機構１、空気極側集電機構２を圧着することができるから、きわめて容易に圧着式燃料電池セルを圧着することができ、また、突起１１から円弧部１２を取り外し、かつ抜き蝶番５および５´からピン６を抜くことにより、膜電極複合体１０と、燃料極側集電機構１と、空気極側集電機構２とを分解することができるから、きわめて容易に圧着式燃料電池セルを分解することができる。   In the present embodiment, the pin 6 is inserted into the extraction hinge 5 and the extraction hinge 5 ′ and the arc portion 12 is fitted into the protrusion 11, whereby the fuel electrode side current collecting mechanism 1, Since the air electrode side current collecting mechanism 2 can be crimped, the crimped fuel cell can be crimped very easily, and the arc portion 12 is removed from the projection 11 and the pin 5 is pulled out from the hinges 5 and 5 ′. By removing 6, the membrane electrode assembly 10, the fuel electrode side current collecting mechanism 1, and the air electrode side current collecting mechanism 2 can be disassembled, so that the crimp type fuel cell can be disassembled very easily. Can do.

また、リブ３により、燃料極側集電機構１および空気極側集電機構２の圧着圧力の低下を防止することができる。   Further, the rib 3 can prevent the pressure-bonding pressure of the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 from being lowered.

（第５の実施の形態）
続いて、図６〜図９を用いて、本発明に係る他の圧着式燃料電池セルの構成について説明する。ここでは、上述した第１の実施の形態に係る圧着式燃料電池セルと異なる構成を中心に説明する。図６は本発明に係る他の圧着式燃料電池セルの模式図であり、圧着した状態を示している。なお、図６においては、説明の便宜のため膜電極複合体１０を図示していない。図７は図６におけるＡ−Ａ´断面を示す図、図８は図６におけるＢ−Ｂ´断面を示す図、図９は図６におけるＣ−Ｃ´断面を示す図である。空気極側集電機構２の２つの周辺接合部に矩形状の突起１３（第１の突起部）と先端が反り返った突起１４（第２の突起部）とを備え、燃料極側集電機構１の２つの周辺接合部には突起１３が挿入可能な切れ込み１５と、ピン６を挿入可能なピン挿入機構（ピン挿入部）１６とを備えている。切れ込み１５に突起１３を挿入し、燃料極側集電機構１と空気極側集電機構２との間に膜電極複合体１０を挟み込み、圧着した後、突起１４の外面と、燃料極側集電機構１の外面と、ピン挿入機構１６の内面とにピン６が当接するようピン挿入機構１６にピン６を挿入することによって、膜電極複合体１０に燃料極側集電機構１、空気極側集電機構２を圧着した状態を保持することが可能となる。また、この圧着した状態においては、突起１４の先端が反り返っていることによって、燃料極側集電機構１、空気極側集電機構２がピン６より外れるのを防止することが可能となる。また、ピン挿入機構１６からピン６を抜き、切れ込み１５から突起１３を抜くことによって、膜電極複合体１０と、燃料極側集電機構１と、空気極側集電機構２とを分解することが可能となる。 (Fifth embodiment)
Then, the structure of the other crimp type | mold fuel cell which concerns on this invention is demonstrated using FIGS. 6-9. Here, it demonstrates centering on a different structure from the crimping | compression-bonding type fuel cell which concerns on 1st Embodiment mentioned above. FIG. 6 is a schematic view of another crimp type fuel cell according to the present invention, and shows a crimped state. In FIG. 6, the membrane electrode assembly 10 is not shown for convenience of explanation. 7 is a diagram showing the AA ′ section in FIG. 6, FIG. 8 is a diagram showing the BB ′ section in FIG. 6, and FIG. 9 is a diagram showing the CC ′ section in FIG. Two peripheral joints of the air electrode side current collecting mechanism 2 are provided with a rectangular protrusion 13 (first protrusion) and a protrusion 14 (second protrusion) whose tip is bent back, and the fuel electrode side current collecting mechanism. 1 is provided with a notch 15 into which the protrusion 13 can be inserted and a pin insertion mechanism (pin insertion portion) 16 into which the pin 6 can be inserted. The protrusion 13 is inserted into the notch 15, the membrane electrode assembly 10 is sandwiched between the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2, and is crimped. Then, the outer surface of the protrusion 14 and the fuel electrode side current collector are collected. By inserting the pin 6 into the pin insertion mechanism 16 so that the pin 6 contacts the outer surface of the electric mechanism 1 and the inner surface of the pin insertion mechanism 16, the fuel electrode side current collecting mechanism 1, the air electrode It is possible to hold the side current collecting mechanism 2 in a pressure-bonded state. Further, in this crimped state, the tip of the protrusion 14 is warped, so that it is possible to prevent the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 from being detached from the pin 6. Also, the membrane electrode assembly 10, the fuel electrode side current collecting mechanism 1, and the air electrode side current collecting mechanism 2 are disassembled by removing the pin 6 from the pin insertion mechanism 16 and removing the protrusion 13 from the notch 15. Is possible.

燃料極側集電機構１および空気極側集電機構２の材質としてはステンレス、アルミニウム、チタン等の薄い金属を用いることが可能であり、これらの金属は導電性が高く、かつその表面は耐食性を持つことが望ましい。また、膜電極複合体１０との接触抵抗の低減および耐食性の向上を目的として、燃料極側集電機構１および空気極側集電機構２の表面に金メッキ等の耐食コーティングを施すことも有効である。燃料極側集電機構１および空気極側集電機構２を圧着式燃料電池セルの電極として使用するため、突起１３および切れ込み１５は絶縁されている。ピン６は突起１４およびピン挿入機構１６と絶縁するために、樹脂等の絶縁物でなくてはならないが、ステンレス等の導電性の材質の周囲を絶縁加工して使用することも可能であるし、ピン挿入機構１６の内部や突起１４のピン６と接触する部分を絶縁することによって、金属等の導電性の材質を直接使用することも可能である。燃料極側集電機構１および空気極側集電機構２は、燃料を供給した際に、燃料の圧力と大気圧の差によって、燃料極側集電機構１および空気極側集電機構２が撓んでしまうことを防止する目的で、リブ３が燃料極側集電機構１および空気極側集電機構２の２つの周辺部にそれぞれ備えられている。なお、リブ３の断面は円弧、円弧を複数繋げた形状または多角形が有効である。   As materials for the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2, thin metals such as stainless steel, aluminum, and titanium can be used. These metals have high conductivity, and their surfaces have corrosion resistance. It is desirable to have It is also effective to apply a corrosion-resistant coating such as gold plating on the surfaces of the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 for the purpose of reducing the contact resistance with the membrane electrode assembly 10 and improving the corrosion resistance. is there. Since the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 are used as electrodes of the pressure-bonding type fuel cell, the protrusion 13 and the notch 15 are insulated. In order to insulate the pin 6 from the protrusion 14 and the pin insertion mechanism 16, the pin 6 must be an insulating material such as resin. However, it is also possible to use an insulating material around a conductive material such as stainless steel. It is also possible to directly use a conductive material such as a metal by insulating the inside of the pin insertion mechanism 16 and the portion of the projection 14 that contacts the pin 6. When the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 are supplied with fuel, the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 are In order to prevent bending, ribs 3 are provided in two peripheral portions of the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2, respectively. In addition, the cross section of the rib 3 is effectively an arc, a shape in which a plurality of arcs are connected, or a polygon.

本実施の形態においては、ピン挿入機構１６にピン６を挿入し、かつ切れ込み１５に燃料極側集電機構１を挿入し、かつ空気極側集電機構２の外面とピン６とを当接することにより、膜電極複合体１０に燃料極側集電機構１、空気極側集電機構２を圧着することができるから、きわめて容易に圧着式燃料電池セルを圧着することができ、また、この圧着した状態においては、突起１４の先端が反り返っていることにより、燃料極側集電機構１、空気極側集電機構２がピン６より外れるのを防止することができる。また、ピン挿入機構１６からピン６を抜き、かつ切れ込み１５から燃料極側集電機構１を抜くことにより、膜電極複合体１０と、燃料極側集電機構１と、空気極側集電機構２とを分解することができるから、きわめて容易に圧着式燃料電池セルを分解することができる。   In the present embodiment, the pin 6 is inserted into the pin insertion mechanism 16, the fuel electrode side current collecting mechanism 1 is inserted into the notch 15, and the outer surface of the air electrode side current collecting mechanism 2 is brought into contact with the pin 6. As a result, the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 can be pressure-bonded to the membrane electrode assembly 10, so that the pressure-bonding type fuel cell can be pressure-bonded extremely easily. In the crimped state, the tips of the protrusions 14 are warped, so that the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 can be prevented from coming off from the pins 6. Further, by removing the pin 6 from the pin insertion mechanism 16 and removing the fuel electrode side current collecting mechanism 1 from the notch 15, the membrane electrode assembly 10, the fuel electrode side current collecting mechanism 1, and the air electrode side current collecting mechanism are obtained. 2 can be disassembled, so that the crimp type fuel cell can be disassembled very easily.

また、リブ３により、燃料極側集電機構１および空気極側集電機構２の圧着圧力の低下を防止することができる。   Further, the rib 3 can prevent the pressure-bonding pressure of the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 from being lowered.

（第６の実施の形態）
続いて、図１０を用いて、本発明に係る他の圧着式燃料電池セルの構成について説明する。ここでは、上述した第５の実施の形態に係る圧着式燃料電池セルと異なる構成を中心に説明する。図１０は本発明に係る他の圧着式燃料電池セルの模式図であり、圧着した状態を示している。本実施の形態は、上述した第５の実施の形態において、突起１３および切れ込み１５による機構を、突起１４およびピン挿入機構１６で置き換えたものである。 (Sixth embodiment)
Subsequently, the configuration of another crimp type fuel cell according to the present invention will be described with reference to FIG. Here, it demonstrates centering on a different structure from the crimping | compression-bonding type fuel cell which concerns on 5th Embodiment mentioned above. FIG. 10 is a schematic view of another crimp type fuel cell according to the present invention, and shows a crimped state. In this embodiment, the mechanism by the protrusion 13 and the notch 15 is replaced with the protrusion 14 and the pin insertion mechanism 16 in the fifth embodiment described above.

本実施の形態においては、ピン挿入機構１６にピン６を挿入し、かつ空気極側集電機構２の外面とピン６とを当接することにより、膜電極複合体１０に燃料極側集電機構１、空気極側集電機構２を圧着することができるから、きわめて容易に圧着式燃料電池セルを圧着することができ、また、この圧着した状態においては、突起１４の先端が反り返っていることにより、燃料極側集電機構１、空気極側集電機構２がピン６より外れるのを防止することができる。また、ピン挿入機構１６からピン６を抜くことにより、膜電極複合体１０と、燃料極側集電機構１と、空気極側集電機構２とを分解することができるから、きわめて容易に圧着式燃料電池セルを分解することができる。   In the present embodiment, the pin 6 is inserted into the pin insertion mechanism 16 and the outer surface of the air electrode side current collecting mechanism 2 and the pin 6 are brought into contact with each other, whereby the fuel electrode side current collecting mechanism is attached to the membrane electrode assembly 10. 1. Since the air electrode side current collecting mechanism 2 can be crimped, the crimped fuel cell can be crimped very easily, and the tip of the protrusion 14 is warped in this crimped state. Therefore, it is possible to prevent the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 from being detached from the pin 6. Further, by removing the pin 6 from the pin insertion mechanism 16, the membrane electrode assembly 10, the fuel electrode side current collecting mechanism 1, and the air electrode side current collecting mechanism 2 can be disassembled. The fuel cell can be disassembled.

また、リブ３により、燃料極側集電機構１および空気極側集電機構２の圧着圧力の低下を防止することができる。   Further, the rib 3 can prevent the pressure-bonding pressure of the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 from being lowered.

（第７の実施の形態）
続いて、図１１、図１２を用いて、本発明に係る他の圧着式燃料電池セルの構成について説明する。ここでは、上述した第１の実施の形態に係る圧着式燃料電池セルと異なる構成を中心に説明する。図１１は本発明に係る他の圧着式燃料電池セルの模式図であり、圧着した状態を示している。図１２は図１１におけるＤ−Ｄ´断面を示す図である。燃料極側集電機構１´の周辺接合部と、空気極側集電機構２´の周辺接合部とは、反り返り、燃料極側集電機構１´の厚さと、空気極側集電機構２´の厚さと、膜電極複合体１０の厚さとの和よりもわずかに大きい寸法のスリット１８と、圧着式燃料電池セルを挿入可能な空間とを備えたクリップ１７のスリット１８に燃料極側集電機構１´と、空気極側集電機構２´と、膜電極複合体１０とを挟み込んだ圧着構造を備えている。このため、クリップ１７を、反り返り部分に沿って挿入することによって、膜電極複合体１０に燃料極側集電機構１、空気極側集電機構２を圧着した状態を保持することが可能となる。また、反り返り部分に沿ってクリップ１７を抜くことによって、膜電極複合体１０と、燃料極側集電機構１と、空気極側集電機構２とを分解することが可能となる。 (Seventh embodiment)
Then, the structure of the other crimp type | mold fuel cell which concerns on this invention is demonstrated using FIG. 11, FIG. Here, it demonstrates centering on a different structure from the crimping | compression-bonding type fuel cell which concerns on 1st Embodiment mentioned above. FIG. 11 is a schematic view of another crimp type fuel cell according to the present invention, and shows a crimped state. FIG. 12 is a view showing a cross section along line DD ′ in FIG. The peripheral joint portion of the fuel electrode side current collecting mechanism 1 'and the peripheral joint portion of the air electrode side current collecting mechanism 2' are warped, and the thickness of the fuel electrode side current collecting mechanism 1 'and the air electrode side current collecting mechanism 2 are curved. ′ And the thickness of the membrane electrode assembly 10 are slightly larger than the slit 18, and the slit 18 of the clip 17 having a space in which the crimp-type fuel cell can be inserted is disposed on the fuel electrode side. A pressure-bonding structure is provided in which the electric mechanism 1 ′, the air electrode side current collecting mechanism 2 ′, and the membrane electrode assembly 10 are sandwiched. For this reason, by inserting the clip 17 along the warped portion, it is possible to maintain a state in which the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2 are pressure-bonded to the membrane electrode assembly 10. . Further, by pulling out the clip 17 along the warped portion, the membrane electrode assembly 10, the fuel electrode side current collecting mechanism 1, and the air electrode side current collecting mechanism 2 can be disassembled.

燃料極側集電機構１´および空気極側集電機構２´の材質としてはステンレス、アルミニウム、チタン等の薄い金属を用いることが可能であり、これらの金属は導電性が高く、かつその表面は耐食性を持つことが望ましい。さらに膜電極複合体１０との接触抵抗の低減および耐食性の向上を目的として、金メッキ等の耐食コーティングを施すことも有効である。燃料極側集電機構１´および空気極側集電機構２´を圧着式燃料電池セルの電極として使用するため、クリップ１７は樹脂等の絶縁物でなくてはならないが、スリット１８および反り返り部分が挿入可能な空間１９の表面を絶縁するか、燃料極側集電機構１´および空気極側集電機構２´のスリット１８、空間１９と接する部分を絶縁してもよい。燃料極側集電機構１´および空気極側集電機構２´は、燃料を供給した際に、燃料の圧力と大気圧の差によって、燃料極側集電機構１´および空気極側集電機構２´が撓んでしまうことを防止する目的で、空気極側集電機構２´の中心部分（中心部）にリブ３がクロス状に備えられている。リブ３の形状としては、十字状や井形状等も撓み防止に有効である。なお、リブ３の断面は円弧、円弧を複数繋げた形状または多角形が有効である。また、図１１に示すように、向かい合った２組のクリップ１７によって圧着するのではなく、向かい合った１組のクリップ１７のみを使用し、クリップ１７によって圧着していない部分はリブ３によって撓みを防止することも可能である。   As the material for the fuel electrode side current collecting mechanism 1 'and the air electrode side current collecting mechanism 2', it is possible to use thin metals such as stainless steel, aluminum, titanium, etc., and these metals have high conductivity and their surfaces. It is desirable to have corrosion resistance. It is also effective to apply a corrosion resistant coating such as gold plating for the purpose of reducing the contact resistance with the membrane electrode assembly 10 and improving the corrosion resistance. In order to use the fuel electrode side current collecting mechanism 1 ′ and the air electrode side current collecting mechanism 2 ′ as the electrodes of the crimp type fuel cell, the clip 17 must be an insulating material such as resin, but the slit 18 and the warped part The surface of the space 19 into which the gas can be inserted may be insulated, or the portions of the fuel electrode side current collecting mechanism 1 ′ and the air electrode side current collecting mechanism 2 ′ that are in contact with the slit 18 and the space 19 may be insulated. The fuel electrode side current collecting mechanism 1 ′ and the air electrode side current collecting mechanism 2 ′ are arranged such that when fuel is supplied, the fuel electrode side current collecting mechanism 1 ′ and the air electrode side current collecting mechanism 1 ′ In order to prevent the mechanism 2 'from being bent, a rib 3 is provided in a cross shape at the central portion (central portion) of the air electrode side current collecting mechanism 2'. As the shape of the rib 3, a cross shape, a well shape, or the like is also effective for preventing the bending. In addition, the cross section of the rib 3 is effectively an arc, a shape in which a plurality of arcs are connected, or a polygon. In addition, as shown in FIG. 11, instead of crimping with two pairs of clips 17 facing each other, only one pair of clips 17 facing each other is used, and a portion not crimped by the clips 17 is prevented from being bent by the rib 3. It is also possible to do.

本実施の形態においては、クリップ１７を、反り返り部分に沿って挿入することにより、膜電極複合体１０に燃料極側集電機構１´、空気極側集電機構２´を圧着することができるから、きわめて容易に圧着式燃料電池セルを圧着することができ、また、反り返り部分に沿ってクリップ１７を抜くことにより、膜電極複合体１０と、燃料極側集電機構１´と、空気極側集電機構２´とを分解することができるから、きわめて容易に圧着式燃料電池セルを分解することができる。   In the present embodiment, the fuel electrode side current collecting mechanism 1 ′ and the air electrode side current collecting mechanism 2 ′ can be pressure-bonded to the membrane electrode assembly 10 by inserting the clip 17 along the warped portion. Thus, the crimp-type fuel cell can be crimped very easily, and the membrane electrode assembly 10, the fuel electrode side current collecting mechanism 1 ', the air electrode can be removed by removing the clip 17 along the warped portion. Since the side current collecting mechanism 2 ′ can be disassembled, the crimp type fuel cell can be disassembled very easily.

また、リブ３により、燃料極側集電機構１´および空気極側集電機構２´の圧着圧力の低下を防止することができる。   Further, the rib 3 can prevent a decrease in pressure bonding pressure of the fuel electrode side current collecting mechanism 1 ′ and the air electrode side current collecting mechanism 2 ′.

なお、上述した実施の形態においては、燃料極側集電機構１および空気極側集電機構２の周辺部にリブ３を備えたが、燃料極側集電機構１´または空気極側集電機構２´の周辺部にリブ３を備えるようにしてもよい。この場合でも、上述した実施の形態と同様の効果を得ることができる。   In the above-described embodiment, the rib 3 is provided in the periphery of the fuel electrode side current collecting mechanism 1 and the air electrode side current collecting mechanism 2, but the fuel electrode side current collecting mechanism 1 'or the air electrode side current collecting device is provided. You may make it equip the peripheral part of mechanism 2 'with the rib 3. FIG. Even in this case, the same effect as that of the above-described embodiment can be obtained.

また、上述した実施の形態においては、燃料極側集電機構１´および空気極側集電機構２´の中心部にリブ３を備えたが、燃料極側集電機構１または空気極側集電機構２の中心部にリブ３を備えるようにしてもよい。この場合でも、上述した実施の形態と同様の効果を得ることができる。   Further, in the above-described embodiment, the rib 3 is provided at the center of the fuel electrode side current collecting mechanism 1 ′ and the air electrode side current collecting mechanism 2 ′, but the fuel electrode side current collecting mechanism 1 or the air electrode side current collecting mechanism is provided. You may make it equip the center part of the electric mechanism 2 with the rib 3. FIG. Even in this case, the same effect as that of the above-described embodiment can be obtained.

また、上述した実施の形態においては、第１の集電部、燃料極側集電部として燃料極側集電機構１、１´を、第２の集電部、空気極側集電部として空気極側集電機構２、２´を用いたが、第１の集電部、燃料極側集電部として空気極側集電機構２、２´を、第２の集電部、空気極側集電部として燃料極側集電機構１、１´を用いてもよい。この場合でも、上述した実施の形態と同様の効果を得ることができる。   Further, in the above-described embodiment, the fuel electrode side current collecting mechanism 1, 1 ′ is used as the first current collecting unit and the fuel electrode side current collecting unit, and the second current collecting unit and the air electrode side current collecting unit are used. The air electrode side current collecting mechanism 2, 2 ′ is used, but the air electrode side current collecting mechanism 2, 2 ′ is used as the first current collecting unit, fuel electrode side current collecting unit, and the second current collecting unit, air electrode. The fuel electrode side current collecting mechanism 1, 1 ′ may be used as the side current collecting unit. Even in this case, the same effect as that of the above-described embodiment can be obtained.

また、本発明は燃料極側集電機構および空気極側集電機構の両者が圧着可能な圧着構造を有することを特徴とするが、従来の燃料電池セルの外部に圧着するための外部部材を付加的に備えることにより燃料電池セルを圧着することも可能であるが、この場合は部品点数が増えるので好ましくない。   Further, the present invention is characterized in that both of the fuel electrode side current collecting mechanism and the air electrode side current collecting mechanism have a crimping structure capable of being crimped, and an external member for crimping to the outside of a conventional fuel cell is provided. It is possible to crimp the fuel cell by additionally providing it, but this is not preferable because the number of parts increases.

なお、本発明は以上の実施の形態に限定されるものではなく、また、本発明の要旨を逸脱しない範囲において種々の変更が可能であることは勿論である。   In addition, this invention is not limited to the above embodiment, Of course, a various change is possible in the range which does not deviate from the summary of this invention.

本発明に係る圧着式燃料電池セルの模式図である。It is a schematic diagram of the pressure-bonding type fuel cell according to the present invention. 本発明に係る圧着式燃料電池セルの模式図である。It is a schematic diagram of the pressure-bonding type fuel cell according to the present invention. 本発明に係る他の圧着式燃料電池セルの模式図である。It is a schematic diagram of the other crimp type fuel battery cell which concerns on this invention. 本発明に係る他の圧着式燃料電池セルの模式図である。It is a schematic diagram of the other crimp type fuel battery cell which concerns on this invention. 本発明に係る他の圧着式燃料電池セルの模式図である。It is a schematic diagram of the other crimp type fuel battery cell which concerns on this invention. 本発明に係る他の圧着式燃料電池セルの模式図である。It is a schematic diagram of the other crimp type fuel battery cell which concerns on this invention. 図６におけるＡ−Ａ´断面を示す図である。It is a figure which shows the AA 'cross section in FIG. 図６におけるＢ−Ｂ´断面を示す図である。It is a figure which shows the BB 'cross section in FIG. 図６におけるＣ−Ｃ´断面を示す図である。It is a figure which shows CC 'cross section in FIG. 本発明に係る他の圧着式燃料電池セルの模式図である。It is a schematic diagram of the other crimp type fuel battery cell which concerns on this invention. 本発明に係る他の圧着式燃料電池セルの模式図である。It is a schematic diagram of the other crimp type fuel battery cell which concerns on this invention. 図１１におけるＤ−Ｄ´断面を示す図である。It is a figure which shows the DD 'cross section in FIG. 従来技術に係る圧着式燃料電池セルの構成図である。It is a block diagram of the press-fit type fuel battery cell which concerns on a prior art.

符号の説明Explanation of symbols

１…燃料極側集電機構
１´…周囲に反り返り部分を備えた燃料極側集電機構
２…空気極側集電機構
２´…周囲に反り返り部分を備えた空気極側集電機構
３…リブ
４…Ｏリング
５…抜き蝶番
５´…抜き蝶番
６…ピン
７…ピン挿入孔
８…流路
９…通気穴
１０…膜電極複合体
１１…円柱状の突起
１２…半円筒状の円弧部
１３…矩形状の突起
１４…先端が反り返った突起
１５…切れ込み
１６…ピン挿入機構
１７…クリップ
１８…スリット
１９…反り返り部分が挿入可能な空間
１０１…ボルト
１０２…空気極側集電機構 DESCRIPTION OF SYMBOLS 1 ... Fuel electrode side current collection mechanism 1 '... Fuel electrode side current collection mechanism provided with the curvature part around 2 ... Air electrode side current collection mechanism 2' ... Air electrode side current collection mechanism provided with the curvature part around 3 ... Rib 4 ... O-ring 5 ... Extracted hinge 5 '... Extracted hinge 6 ... Pin 7 ... Pin insertion hole 8 ... Flow path 9 ... Vent hole 10 ... Membrane electrode complex 11 ... Cylindrical protrusion 12 ... Semi-cylindrical arc part DESCRIPTION OF SYMBOLS 13 ... Rectangular-shaped protrusion 14 ... Protrusion with the tip curled 15 ... Notch 16 ... Pin insertion mechanism 17 ... Clip 18 ... Slit 19 ... Space in which the warped portion can be inserted 101 ... Bolt 102 ... Air electrode side current collecting mechanism

Claims (10)

膜電極複合体が第１の集電部と第２の集電部とで挟持された圧着式燃料電池セルにおいて、
上記第１の集電部と上記第２の集電部との相対する周辺接合部に上記膜電極複合体に上記第１、第２の集電部を圧着するための圧着構造を備えた
ことを特徴とする圧着式燃料電池セル。 In the crimp type fuel cell in which the membrane electrode assembly is sandwiched between the first current collector and the second current collector,
A crimping structure for crimping the first and second current collectors to the membrane electrode assembly is provided at a peripheral joint between the first current collector and the second current collector. A pressure-bonding type fuel cell. 上記第１の集電部の上記周辺接合部は、第１の抜き蝶番を備え、
上記第２の集電部の上記周辺接合部は、第２の抜き蝶番を備え、
上記第１の抜き蝶番と、上記第２の抜き蝶番とにピンを挿入した上記圧着構造を備えた
ことを特徴とする請求項１に記載の圧着式燃料電池セル。 The peripheral joint portion of the first current collector includes a first extraction hinge,
The peripheral joint portion of the second current collector includes a second extraction hinge,
2. The pressure-bonding fuel cell according to claim 1, comprising the pressure-bonding structure in which a pin is inserted into the first pulling hinge and the second pulling hinge. 上記第１の集電部の上記周辺接合部は、円柱状の被係止部を備え、
上記第２の集電部の上記周辺接合部は、半円筒状の係止部を備え、
上記被係止部の外周部に上記係止部を係合した上記圧着構造を備えた
ことを特徴とする請求項１に記載の圧着式燃料電池セル。 The peripheral joint portion of the first current collector includes a columnar locked portion,
The peripheral joint portion of the second current collector includes a semi-cylindrical locking portion,
2. The pressure-bonding fuel cell according to claim 1, further comprising the pressure-bonding structure in which the locking portion is engaged with an outer peripheral portion of the locked portion. 上記第２の集電部の上記周辺接合部は、矩形状の第１の突起部と、先端が反り返った第２の突起部とを備え、
上記第１の集電部の上記周辺接合部は、上記第１の突起部を挿入可能な切れ込みと、ピンを挿入可能なピン挿入部とを備え、
上記ピン挿入部に上記ピンを挿入し、かつ上記切れ込みに上記第１の突起部を挿入し、かつ上記第２の突起部の外面と上記ピンとを当接した上記圧着構造を備えた
ことを特徴とする請求項１に記載の圧着式燃料電池セル。 The peripheral joint portion of the second current collector includes a rectangular first protrusion and a second protrusion with a curved tip.
The peripheral junction of the first current collector includes a notch into which the first protrusion can be inserted, and a pin insertion part into which a pin can be inserted,
The pressure-bonding structure includes the pin inserted into the pin insertion portion, the first protrusion inserted into the notch, and the outer surface of the second protrusion and the pin in contact with each other. The crimp type fuel cell according to claim 1. 上記第１の集電部の上記周辺接合部と、上記第２の集電部の上記周辺接合部とは、反り返り、
上記第１の集電部の厚さと、上記第２の集電部の厚さと、上記膜電極複合体の厚さとの和よりも大きい寸法のスリットと、上記圧着式燃料電池セルを挿入可能な空間とを備えたクリップの上記スリットに上記第１の集電部と、上記第２の集電部と、上記膜電極複合体とを挟み込んだ上記圧着構造を備えた
ことを特徴とする請求項１に記載の圧着式燃料電池セル。 The peripheral junction of the first current collector and the peripheral junction of the second current collector are warped,
A slit having a dimension larger than the sum of the thickness of the first current collector, the thickness of the second current collector, and the thickness of the membrane electrode assembly, and the crimp fuel cell can be inserted. The crimp structure including the first current collector, the second current collector, and the membrane electrode assembly in the slit of a clip having a space. The crimp type fuel cell according to 1. 上記第１の集電部の周辺部、上記第２の集電部の周辺部の少なくとも一方に、リブを備えた
ことを特徴とする請求項１乃至５のいずれかに記載の圧着式燃料電池セル。 The pressure-bonded fuel cell according to any one of claims 1 to 5, wherein a rib is provided on at least one of a peripheral portion of the first current collector and a peripheral portion of the second current collector. cell. 上記第１の集電部の中心部、上記第２の集電部の中心部の少なくとも一方に、
リブを備えた
ことを特徴とする請求項１乃至５のいずれかに記載の圧着式燃料電池セル。 At least one of the central part of the first current collector and the central part of the second current collector,
6. The pressure-bonding type fuel cell according to claim 1, further comprising a rib. 上記リブは、クロス状、十字状または井形状である
ことを特徴とする請求項７に記載の圧着式燃料電池セル。 The pressure-bonded fuel cell according to claim 7, wherein the rib has a cross shape, a cross shape, or a well shape. 上記第１の集電部は、燃料極側集電部であり、
上記第２の集電部は、空気極側集電部である
ことを特徴とする請求項１乃至８のいずれかに記載の圧着式燃料電池セル。 The first current collector is a fuel electrode side current collector,
The pressure-bonded fuel cell according to claim 1, wherein the second current collector is an air electrode side current collector. 上記第１の集電部は、空気極側集電部であり、
上記第２の集電部は、燃料極側集電部である
ことを特徴とする請求項１乃至８のいずれかに記載の圧着式燃料電池セル。 The first current collector is an air electrode side current collector,
The pressure-bonded fuel cell according to claim 1, wherein the second current collector is a fuel electrode side current collector.
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