JP2005327602A - Manufacturing method of component parts for fuel cell - Google Patents

Manufacturing method of component parts for fuel cell Download PDF

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JP2005327602A
JP2005327602A JP2004144695A JP2004144695A JP2005327602A JP 2005327602 A JP2005327602 A JP 2005327602A JP 2004144695 A JP2004144695 A JP 2004144695A JP 2004144695 A JP2004144695 A JP 2004144695A JP 2005327602 A JP2005327602 A JP 2005327602A
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separator
gasket
manufacturing
mold
fuel cell
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JP4623264B2 (en
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Tomohiro Inoue
智広 井上
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Nok 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing method in which separator 2 hardly suffers from crack or burr when it is inserted into a die to integrally mold gaskets 5, 6, in a manufacturing method of component parts for a fuel cell made by integrally molding the gaskets 5, 6 with the separator 2 with indented flow channels 3c, 4c fitted at either side of the separator 2. <P>SOLUTION: The manufacturing method comprises a process of making a plurality of separator block bodies 3, 4 taking on a shape dividing the separator 2 in a thickness direction with one of the sides 3a, 4a made flat and with the other side 3b, 4b fitted with flow channels 3c, 4c, a process of integrally molding the gaskets 5, 6 with the separator block bodies 3, 4, and a process of making the separator 2 by sticking the plurality of separator block bodies 3, 4 with the flat sides 3a, 4a. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、燃料電池の構成要素をなす燃料電池用構成部品の製造方法に関するものである。本発明の燃料電池用構成部品は、セパレータとこのセパレータに一体成形されたガスケットとを有する。   The present invention relates to a method of manufacturing a fuel cell component which is a constituent element of a fuel cell. The fuel cell component of the present invention includes a separator and a gasket integrally formed with the separator.

固体高分子形燃料電池は、水素と酸素（空気）を反応させて水を得る過程で電気を取り出す原理を用いて発電する電池であり、その構成は、水素イオンを透過する電解質膜を挟み込むかたちで２枚のセパレータが配置されている。これをセルとよび、１セルを何層にも重ね合わせることにより燃料電池スタックが構成される。   A polymer electrolyte fuel cell is a battery that generates electricity using the principle of extracting electricity in the process of obtaining water by reacting hydrogen and oxygen (air), and its configuration is sandwiched between electrolyte membranes that transmit hydrogen ions. Two separators are arranged. This is called a cell, and a fuel cell stack is formed by superposing one cell in multiple layers.

このうち、セパレータは、水素と酸素を遮断する流体遮断性と、電気を取り出すことのできる導電性をもつ必要があり、このセパレータとして従来、炭素粉体に樹脂を混合した材料が用いられているが、この炭素と樹脂よりなるセパレータには強度が低い欠点がある。   Among these, the separator needs to have a fluid barrier property that shuts off hydrogen and oxygen and a conductivity that can take out electricity. Conventionally, a material obtained by mixing a resin with carbon powder is used as this separator. However, this carbon and resin separator has a drawback of low strength.

また、燃料電池には、燃料ガスや冷却水をシールするためのガスケットを２枚のセパレータ間に挟み込むことが必要とされ、その組み付け性を向上させるべく従来、図２に示すように、セパレータ５１にガスケット５４を一体成形する方法が考案されている（特許文献１参照）。   In addition, in a fuel cell, a gasket for sealing fuel gas or cooling water is required to be sandwiched between two separators. Conventionally, as shown in FIG. A method has been devised in which the gasket 54 is integrally formed (see Patent Document 1).

すなわち、同図に示すように、上記炭素や樹脂を成形材料としてセパレータ５１を成形し、このときセパレータ５１の一面５１ａおよび他面５１ｂにそれぞれ凹凸状の流路５２ａ，５２ｂとガスケット装着溝５３ａ，５３ｂを形成する。次いで、このセパレータ５１をガスケット成形用の金型（図示せず）にインサートし、この金型によってセパレータ５１の一面５１ａおよび他面５１ｂにそれぞれガスケット５４ａ，５４ｂを一体成形する（尚、図における左側のガスケット５４ａ，５４ｂは、一面５１ａ側のガスケット５４ａと他面５１ｂ側のガスケット５４ｂの平面上の位置が重なっているので、一面５１ａ側のガスケット装着溝５３ａと他面５１ｂ側のガスケット装着溝５３ｂを連通する連通孔５５が設けられており、一方の装着溝５３ａにガスケット成形材料を充填すると連通孔５５を介して他方の装着溝５３ｂにも成形材料が充填されるように構成されている）。   That is, as shown in the figure, the separator 51 is molded using the carbon or resin as a molding material. At this time, the concave and convex flow paths 52a and 52b and the gasket mounting grooves 53a, 53b is formed. Next, the separator 51 is inserted into a gasket molding die (not shown), and the gaskets 54a and 54b are integrally formed on the one surface 51a and the other surface 51b of the separator 51 by the die (the left side in the figure). Since the gaskets 54a and 54b of the first surface 51a and the gasket 54b on the other surface 51b side overlap each other, the gasket mounting groove 53a on the first surface 51a side and the gasket mounting groove 53b on the other surface 51b side overlap. And the other mounting groove 53b is filled with the molding material via the communication hole 55 when the one molding groove 53a is filled with the gasket molding material. .

しかしながら、最近、スタックの大きさを小さくするためにセパレータ５１の厚さは薄くなる一方であり、よって上記金型による型締め時にセパレータ５１が割れ易くなっている。特に、上記したようにセパレータ５１の一面５１ａおよび他面５１ｂの双方にそれぞれ凹凸状の流路５２ａ，５２ｂが設けられている場合には、セパレータ５１が金型内で金型によって十分に支持されないことから、セパレータ５１に割れが発生し易い。   However, recently, the thickness of the separator 51 has been reduced in order to reduce the size of the stack, and therefore, the separator 51 is easily cracked when the mold is clamped. In particular, as described above, when the uneven flow paths 52a and 52b are provided on both the one surface 51a and the other surface 51b of the separator 51, the separator 51 is not sufficiently supported by the mold in the mold. For this reason, the separator 51 is easily cracked.

また、セパレータ５１の割れを防止すべく上記金型による型締め時に型締め力を小さくすることが考えられるが、この場合には、図２に示したようにセパレータ５１上にバリ５６が発生し易くなる。発生したバリ５６は除去しなければならず、バリ取り作業はその工程数が多い。したがってバリ取り作業をしなくても良いようバリを発生させないことが求められる。   In order to prevent the separator 51 from cracking, it is conceivable to reduce the clamping force when the mold is clamped. In this case, a burr 56 is generated on the separator 51 as shown in FIG. It becomes easy. The generated burrs 56 must be removed, and the deburring operation has many steps. Therefore, it is required not to generate burrs so that the deburring operation is not necessary.

特開２００１−１８５１７４号公報JP 2001-185174 A

本発明は以上の点に鑑みて、セパレータを金型にインサートしてガスケットを一体成形するに際して、セパレータに割れが発生しにくく、バリが発生しにくい燃料電池用構成部品の製造方法を提供することを目的とする。   In view of the above, the present invention provides a method for manufacturing a component for a fuel cell in which when a separator is inserted into a mold and a gasket is integrally formed, the separator is hardly cracked and burrs are hardly generated. With the goal.

上記目的を達成するため、本発明の製造方法は、セパレータの両面にそれぞれ凹凸状の流路を設けるとともに前記セパレータにガスケットを一体成形してなる燃料電池用構成部品の製造方法において、前記セパレータを厚さ方向に分割した形状を呈し、一方の面をフラットな面とするとともに他方の面に凹凸状の流路を設けた複数のセパレータ分割体を製作する工程と、前記セパレータ分割体にガスケットを一体成形する工程と、前記複数のセパレータ分割体をフラットな一方の面同士で貼り合わせて前記セパレータを製作する工程とを有することを特徴とするものである。   In order to achieve the above object, the manufacturing method of the present invention provides a fuel cell component manufacturing method in which concave and convex flow paths are provided on both surfaces of a separator and a gasket is integrally formed on the separator. Forming a plurality of separator divided bodies having a shape divided in the thickness direction, with one surface being a flat surface and providing an uneven channel on the other surface, and a gasket on the separator divided body; The method includes a step of integrally forming and a step of manufacturing the separator by bonding the plurality of separator divided bodies on one flat surface.

上記従来技術において、セパレータ５１に割れが発生し易かったのは、上記したようにセパレータ５１の一面５１ａおよび他面５１ｂの双方にそれぞれ凹凸状の流路５２ａ，５２ｂが設けられていて、セパレータ５１が金型内で金型によって十分に支持されなかったからであり、セパレータ５１が金型内で金型によって十分に支持されなかったのは、セパレータ５１が、凹凸状の流路５２ｂやガスケット装着溝５３ｂを設けた面５１ｂにおいて金型によって支持されていたからである。   In the above-described prior art, the separator 51 was easily cracked because, as described above, the concave and convex flow paths 52a and 52b are provided on both the one surface 51a and the other surface 51b of the separator 51, respectively. Was not sufficiently supported by the mold in the mold, and the separator 51 was not sufficiently supported by the mold in the mold because the separator 51 had the uneven channel 52b and the gasket mounting groove. This is because the surface 51b provided with 53b is supported by the mold.

これに対して、本発明の製造方法によれば、セパレータが厚さ方向に分割された形状のセパレータ分割体が製作され、このセパレータ分割体が金型にインサートされ、このときフラットな一面において金型によって支持されることから、セパレータ分割体は少々薄くても金型内で金型によって十分に支持される。したがって、セパレータ分割体が金型内で金型によって十分に支持された状態で型締めが行なわれることから、セパレータ分割体に無理な負担がかからず、よって割れが発生するのを抑えることが可能となる。また、割れの発生を抑えることができれば、型締め力は大きくても良いので、バリが発生するのを抑えることも可能となる。   On the other hand, according to the manufacturing method of the present invention, a separator divided body having a shape in which the separator is divided in the thickness direction is manufactured, and this separator divided body is inserted into a mold, and at this time, the mold is formed on a flat surface. Since it is supported by the mold, the separator divided body is sufficiently supported by the mold in the mold even if it is a little thin. Therefore, since the mold clamping is performed in a state where the separator divided body is sufficiently supported by the mold in the mold, it is possible to prevent the separator divided body from being subjected to an excessive load and thus to prevent cracking. It becomes possible. Further, if the generation of cracks can be suppressed, the mold clamping force may be large, so that generation of burrs can also be suppressed.

本発明は、以下の効果を奏する。   The present invention has the following effects.

すなわち、上記構成を備えた本発明の製造方法においては、上記したようにセパレータが厚さ方向に分割された形状のセパレータ分割体が製作され、このセパレータ分割体が金型にインサートされ、このときフラットな一面において金型によって支持されることから、セパレータ分割体は少々薄くても金型内で金型によって十分に支持され、この状態で型締めが行なわれる。したがって、セパレータ分割体に無理な負担がかからず、よって割れが発生するのを抑えることが可能となり、併せて、バリが発生するのを抑えることも可能となる。したがって所期の目的どおり、製造に際してセパレータに割れが発生しにくく、バリが発生しにくい燃料電池用構成部品の製造方法を提供することができる。   That is, in the manufacturing method of the present invention having the above-described configuration, a separator divided body having a shape in which the separator is divided in the thickness direction as described above is manufactured, and this separator divided body is inserted into a mold. Since the flat flat surface is supported by the mold, the separator divided body is sufficiently supported by the mold in the mold even if it is a little thin, and the mold is clamped in this state. Therefore, an unreasonable burden is not applied to the separator divided body, so that it is possible to suppress the occurrence of cracks, and it is also possible to suppress the occurrence of burrs. Therefore, according to the intended purpose, it is possible to provide a method for manufacturing a component for a fuel cell in which cracks are hardly generated in the separator and burrs are hardly generated.

尚、本件出願には、以下の実施形態が含まれる。   The present application includes the following embodiments.

（１）片面がフラットで、もう一方の面に流路が形成されているセパレータ上の流路がある面にガスケットを一体成形し、その後、フラットの面同士を貼り合わせることによって一体に製作された両面に流路とガスケットのある両面セパレータ一体ガスケット。
（２）片面に流路やガスケット用の溝、もう一方の面はフラットであるセパレータ上の流路のある面へガスケットを成形する。そのガスケットと一体化したセパレータのフラット面同士を接着剤によって一体化する。片面がフラットであることにより、セパレータの強度が大きくなり、セパレータの割れが発生しづらくなる。また、セパレータの型締め力を大きくすることが可能であるため、ガスケット成形時のバリ漏れが発生しづらくなる。セパレータとしては、樹脂をバインダーとする炭素系のものを用いる。
（３）片面がフラットな形状のセパレータを成形する。もう一方の面には流路と必要であればガスケット用の溝がある。その後、セパレータをガスケット成形用の金型へインサートして、ガスケットをインジェクション成形、トランスファー成形または圧縮成形等を用いて一体化する。ガスケットを成形する面は、セパレータの表面に流路が形成されている面である。ガスケットを成形した後に、２枚のセパレータのフラット面同士を貼り合わせることによって、一枚の両面に流路が設けられガスケットが一体化されたセパレータが完成する。貼り合わせに際して用いられる接着剤は特に限定されないが、好ましくは、カーボンナノチューブなど導電性微粉末を分散させた導電性接着剤が用いられる。
（４）上記（１）ないし（３）の構成によれば、セパレータ上へガスケットを成形する場合に発生していたセパレータの割れが減少する。また、ガスケット成形によるバリ漏れが減少する。 (1) One side is flat and the other side is formed with a flow path on the separator. The gasket is integrally formed on the surface with the flow path on the separator, and then the flat surfaces are bonded together. Double sided separator integrated gasket with flow path and gasket on both sides.
(2) A gasket is formed on a surface having a flow path on a separator having a flow path and a gasket groove on one side and a flat surface on the other side. The flat surfaces of the separator integrated with the gasket are integrated with an adhesive. When one side is flat, the strength of the separator is increased and it is difficult for the separator to crack. Moreover, since it is possible to increase the mold clamping force of the separator, it is difficult for burrs to leak during molding of the gasket. As the separator, a carbon-based material using a resin as a binder is used.
(3) A separator having a flat shape on one side is formed. On the other side there is a channel and, if necessary, a groove for the gasket. Thereafter, the separator is inserted into a mold for molding the gasket, and the gasket is integrated using injection molding, transfer molding, compression molding, or the like. The surface on which the gasket is molded is a surface on which a flow path is formed on the surface of the separator. After the gasket is molded, the flat surfaces of the two separators are bonded together, thereby completing a separator in which a flow path is provided on one surface and the gasket is integrated. The adhesive used for bonding is not particularly limited, but a conductive adhesive in which conductive fine powder such as carbon nanotubes is dispersed is preferably used.
(4) According to the configuration of (1) to (3), the cracking of the separator that occurs when the gasket is molded on the separator is reduced. Further, burr leakage due to gasket molding is reduced.

つぎに本発明の実施例を図面にしたがって説明する。   Next, embodiments of the present invention will be described with reference to the drawings.

図１は、本発明の実施例に係る燃料電池用構成部品１の製造方法の工程説明図を示している。同図（Ｂ）に示すように、当該実施例に係る製造方法は、セパレータ２の両面にそれぞれ凹凸状の流路３ｃ，４ｃを設けるとともに同両面にそれぞれガスケット５，６を一体成形してなる燃料電池用構成部品１を製造するものであって、以下の製造工程を有している。   FIG. 1 is a process explanatory diagram of a method of manufacturing a fuel cell component 1 according to an embodiment of the present invention. As shown in FIG. 4B, the manufacturing method according to this embodiment is provided with concave and convex flow paths 3c and 4c on both sides of the separator 2 and integrally molding gaskets 5 and 6 on both sides, respectively. The fuel cell component 1 is manufactured and includes the following manufacturing steps.

すなわち先ず、同図（Ａ）に示すように、セパレータ２を厚さ方向に分割した形状になり、かつ一方の面３ａ，４ａをフラットな面とするとともに他方の面３ｂ，４ｂに凹凸状の流路３ｃ，４ｃとガスケット装着溝３ｄ，４ｄを設けた複数のセパレータ分割体３，４をそれぞれ製作する。図では、複数のセパレータ分割体３，４は上側のセパレータ分割体３と下側のセパレータ分割体４の組み合わせによって構成されており、上側のセパレータ分割体３は、一方の面３ａをフラットな面とするとともに他方の面３ｂに凹凸状の流路３ｃとガスケット装着溝３ｄが設けられている。また、下側のセパレータ分割体４も同様に、一方の面４ａをフラットな面とするとともに他方の面４ｂに凹凸状の流路４ｃとガスケット装着溝４ｄが設けられている。セパレータ２ないしその分割体３，４としてその成形材料には、樹脂をバインダーとする炭素系のものが好適である。   That is, first, as shown in FIG. 5A, the separator 2 is divided into thicknesses, and one surface 3a, 4a is flat and the other surface 3b, 4b is uneven. A plurality of separator divided bodies 3 and 4 provided with flow paths 3c and 4c and gasket mounting grooves 3d and 4d are respectively produced. In the figure, the plurality of separator divided bodies 3 and 4 are constituted by a combination of an upper separator divided body 3 and a lower separator divided body 4, and the upper separator divided body 3 has a flat surface on one surface 3a. In addition, an uneven channel 3c and a gasket mounting groove 3d are provided on the other surface 3b. Similarly, the lower separator divided body 4 has a flat surface on one surface 4a and an uneven channel 4c and a gasket mounting groove 4d on the other surface 4b. As the molding material of the separator 2 or the divided bodies 3 and 4 thereof, a carbon-based material using a resin as a binder is preferable.

次いで、同図（Ａ）に示すように、上記工程で製作したセパレータ分割体３，４にそれぞれガスケット５，６を一体成形する。図では、上側のセパレータ分割体３のガスケット装着溝３ｄにガスケット５が一体成形され、下側のセパレータ分割体４のガスケット装着溝４ｄにもガスケット６が一体成形されている。これらの一体成形は、セパレータ分割体３，４を単位として個別に行なわれ、各セパレータ分割体３，４はそれぞれ、フラットな一方の面３ａ，４ａをもって金型（図示せず）内で金型によって十分に支持された状態で一体成形が行なわれる。セパレータ分割体３，４毎にその形状や大きさが異なり、よって金型のキャビティ形状が異なる場合には、分割体３，４毎に金型を用意する。   Next, as shown in FIG. 5A, gaskets 5 and 6 are integrally formed on the separator divided bodies 3 and 4 manufactured in the above-described steps. In the figure, the gasket 5 is integrally formed in the gasket mounting groove 3d of the upper separator divided body 3, and the gasket 6 is also integrally formed in the gasket mounting groove 4d of the lower separator divided body 4. These integral moldings are individually performed in units of the separator divided bodies 3 and 4, and each of the separator divided bodies 3 and 4 has a flat one surface 3a and 4a in a mold (not shown). Thus, the integral molding is performed in a state of being sufficiently supported by the above. If the separator divided bodies 3 and 4 have different shapes and sizes, and therefore the mold cavity shape is different, a mold is prepared for each of the divided bodies 3 and 4.

次いで、同図（Ｂ）に示すように、上記工程でガスケット５，６を一体成形したセパレータ分割体３，４をフラットな一方の面３ａ，４ａ同士で貼り合わせてセパレータ２を製作する。貼り合わせには接着剤（図示せず）を用い、例えばカーボンナノチューブなど導電性微粉末を分散させた導電性接着剤を用いる。   Next, as shown in FIG. 4B, the separators 3 and 4 in which the gaskets 5 and 6 are integrally formed in the above process are bonded to each other on the flat surfaces 3a and 4a, thereby manufacturing the separator 2. For bonding, an adhesive (not shown) is used, and for example, a conductive adhesive in which conductive fine powder such as carbon nanotubes is dispersed is used.

上記工程を有する当該実施例に係る製造方法によれば、上記したようにセパレータ２を厚さ方向に分割した形状になり、かつ一方の面３ａ，４ａをフラットな面とするとともに他方の面３ｂ，４ｂに凹凸状の流路３ｃ，４ｃとガスケット装着溝３ｄ，４ｄを設けた複数のセパレータ分割体３，４が製作され、このセパレータ分割体３，４がそれぞれ金型にインサートされ、このときフラットな一面３ａ，４ａにおいて金型によって支持されることから、セパレータ分割体３，４はセパレータ２全体より少々薄くても金型内で金型によって十分に支持され、この状態で型締めが行なわれる。したがって、金型内で金型によって十分に支持されたセパレータ分割体３，４には無理な負担がかからないことから、割れが発生するのを抑えることができ、併せて、型締め力を弱める必要がないことから、バリが発生するのを抑えることができる。したがって所期の目的どおり、製造に際してセパレータ２に割れが発生しにくく、かつバリが発生しにくい燃料電池用構成部品１の製造方法を提供することができる。   According to the manufacturing method according to the embodiment having the above steps, the separator 2 has a shape divided in the thickness direction as described above, and the one surface 3a, 4a is a flat surface and the other surface 3b. , 4b are provided with a plurality of separator divided bodies 3, 4 provided with concave and convex flow paths 3c, 4c and gasket mounting grooves 3d, 4d, and the separator divided bodies 3, 4 are respectively inserted into the molds. Since the flat surfaces 3a and 4a are supported by the mold, the separator divided bodies 3 and 4 are sufficiently supported by the mold in the mold even if they are slightly thinner than the entire separator 2, and the mold is clamped in this state. It is. Therefore, since the separator divided bodies 3 and 4 that are sufficiently supported by the mold in the mold are not subjected to an excessive burden, it is possible to suppress the occurrence of cracks and to reduce the mold clamping force. Therefore, the occurrence of burrs can be suppressed. Therefore, according to the intended purpose, it is possible to provide a method for manufacturing the fuel cell component 1 in which the separator 2 is less likely to be cracked and burrs are less likely to occur.

尚、上記実施例においては、ガスケット５，６が、セパレータ分割体３，４に設けたガスケット装着溝３ｄ，４ｄ内に一体成形されており、これによれば一体成形位置の正確性を期すことができるが、ガスケット装着溝３ｄ，４ｄは任意の構成であるので無くても良い。この場合には、セパレータ分割体３，４の他方の面３ｂ，４ｂ上にガスケット５，６が直接一体成形される。   In the above-described embodiment, the gaskets 5 and 6 are integrally formed in the gasket mounting grooves 3d and 4d provided in the separator divided bodies 3 and 4. According to this, the accuracy of the integrated molding position is expected. However, since the gasket mounting grooves 3d and 4d have an arbitrary configuration, they may be omitted. In this case, the gaskets 5 and 6 are directly integrally formed on the other surfaces 3 b and 4 b of the separator divided bodies 3 and 4.

また、上記実施例においては、一方のセパレータ分割体３および他方のセパレータ分割体４のそれぞれにガスケット５，６を一体成形したが、何れか一方の分割体のみにガスケットを一体成形するものであっても良い。この場合、スタック状態においてガスケットを一体成形しない側のシールは、隣接配置されるセパレータが備えるガスケットが当該セパレータ２に密接することにより行なわれることになる。   Further, in the above embodiment, the gaskets 5 and 6 are integrally formed in each of the one separator divided body 3 and the other separator divided body 4, but the gasket is integrally formed only in one of the divided bodies. May be. In this case, the seal on the side where the gasket is not integrally formed in the stacked state is performed by bringing the gasket provided in the adjacently disposed separator into close contact with the separator 2.

本発明の実施例に係る燃料電池用構成部品の製造方法の工程説明図であって、（Ａ）はセパレータ分割体を製作してガスケットを一体成形した状態の断面図、（Ｂ）はセパレータ分割体をフラットな面同士で貼り合わせてセパレータを製作した状態の断面図It is process explanatory drawing of the manufacturing method of the component for fuel cells which concerns on the Example of this invention, Comprising: (A) is sectional drawing of the state which manufactured the separator division body and formed the gasket integrally, (B) is separator division | segmentation. Cross-sectional view of the separator manufactured by bonding the bodies together on flat surfaces 従来例に係る製造方法によって製造された燃料電池用構成部品の断面図Sectional drawing of the components for fuel cells manufactured by the manufacturing method which concerns on a prior art example

符号の説明Explanation of symbols

１ 燃料電池用構成部品
２ セパレータ
３，４ セパレータ分割体
３ａ，４ａ 一方の面
３ｂ，４ｂ 他方の面
３ｃ，４ｃ 流路
３ｄ，４ｄ ガスケット装着溝
５，６ ガスケット DESCRIPTION OF SYMBOLS 1 Fuel cell component 2 Separator 3, 4 Separator division body 3a, 4a One side 3b, 4b The other side 3c, 4c Flow path 3d, 4d Gasket mounting groove 5, 6 Gasket

Claims (1)

セパレータ（２）の両面にそれぞれ凹凸状の流路（３ｃ）（４ｃ）を設けるとともに前記セパレータ（２）にガスケット（５）（６）を一体成形してなる燃料電池用構成部品（１）の製造方法において、
前記セパレータ（２）を厚さ方向に分割した形状を呈し、一方の面（３ａ）（４ａ）をフラットな面とするとともに他方の面（３ｂ）（４ｂ）に凹凸状の流路（３ｃ）（４ｃ）を設けた複数のセパレータ分割体（３）（４）を製作する工程と、
前記セパレータ分割体（３）（４）にガスケット（５）（６）を一体成形する工程と、
前記複数のセパレータ分割体（３）（４）をフラットな一方の面（３ａ）（４ａ）同士で貼り合わせて前記セパレータ（２）を製作する工程とを有することを特徴とする燃料電池用構成部品の製造方法。 An uneven channel (3c) (4c) is provided on both sides of the separator (2), and a gasket (5) (6) is integrally formed with the separator (2). In the manufacturing method,
The separator (2) has a shape obtained by dividing the separator (2) in the thickness direction, the one surface (3a) (4a) is a flat surface, and the other surface (3b) (4b) has an uneven channel (3c). Producing a plurality of separator divided bodies (3) and (4) provided with (4c);
A step of integrally molding gaskets (5) and (6) on the separator divided bodies (3) and (4);
And a step of manufacturing the separator (2) by bonding the plurality of separator divided bodies (3) and (4) on one flat surface (3a) and (4a). A manufacturing method for parts.
JP2004144695A 2004-05-14 2004-05-14 Manufacturing method of fuel cell component Expired - Lifetime JP4623264B2 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63184264A (en) * 1986-10-16 1988-07-29 Fuji Electric Co Ltd Manufacture of separator with rib
JPH0684526A (en) * 1992-09-03 1994-03-25 Mitsubishi Electric Corp Separator with rib for fuel cell and its manufacture

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63184264A (en) * 1986-10-16 1988-07-29 Fuji Electric Co Ltd Manufacture of separator with rib
JPH0684526A (en) * 1992-09-03 1994-03-25 Mitsubishi Electric Corp Separator with rib for fuel cell and its manufacture

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