JP2006318823A - Fuel cell - Google Patents

Fuel cell Download PDF

Info

Publication number
JP2006318823A
JP2006318823A JP2005141706A JP2005141706A JP2006318823A JP 2006318823 A JP2006318823 A JP 2006318823A JP 2005141706 A JP2005141706 A JP 2005141706A JP 2005141706 A JP2005141706 A JP 2005141706A JP 2006318823 A JP2006318823 A JP 2006318823A
Authority
JP
Japan
Prior art keywords
gas
conductive
side separator
flows
frame plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2005141706A
Other languages
Japanese (ja)
Inventor
Naoya Ogawa
直也 小川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Electric Power Development Co Ltd
Original Assignee
Electric Power Development Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Electric Power Development Co Ltd filed Critical Electric Power Development Co Ltd
Priority to JP2005141706A priority Critical patent/JP2006318823A/en
Publication of JP2006318823A publication Critical patent/JP2006318823A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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

Landscapes

  • Fuel Cell (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To suppress the dispersion of power generation performance of unit cells and to uniformize the power generation performance in a fuel cell having structure with a plurality of unit cells installed on the same plane. <P>SOLUTION: An anode side separator 1 or a cathode side separator 3 of a fuel cell having structure interposing a membrane electrode assembly between the anode side separator 1 and the cathode side separator 3, is equipped with an insulating frame plate 4, n pieces of conducting parts 5 separately installed in the insulating frame plate 4 in a flat, and a gas inlet part 8 and a gas outlet part 9 formed in the frame plate 4. Grooves through which gas flows are formed in the frame plate and the conducting part. Gas from the gas inlet part flows in a first conducting part, flows in a second conducting part, similarly flows in an n-th conducting part, and then is returned from here, and flows in an (n-1)th conducting part from the n-th conducting part, thus reciprocating flow of gas is repeated at least once, and returns to the first conducting part, and reaches the gas outlet part. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

この発明は、単位セルが平面上に配置された平面型の燃料電池に関する。   The present invention relates to a planar fuel cell in which unit cells are arranged on a plane.

図３は、このような平面型の燃料電池の基本構造の一例を示すものである。
図中符号１は、アノード側セパレータを、２は膜電極アセンブリを、３はカソード側セパレータを示す。
このものでは、アノード側セパレータ１とカソード側セパレータ３とで膜電極アセンブリ２を挟み込んだ構造となっている。 FIG. 3 shows an example of the basic structure of such a planar fuel cell.
In the figure, reference numeral 1 denotes an anode side separator, 2 denotes a membrane electrode assembly, and 3 denotes a cathode side separator.
In this structure, the membrane electrode assembly 2 is sandwiched between the anode side separator 1 and the cathode side separator 3.

アノード側セパレータ１とカソード側セパレータ３とは、ほぼ同様の構造を有するもので、このセパレータ１（３）は、耐熱性の良好な合成樹脂、セラミックなどの絶縁材料からなる矩形の板状の絶縁枠板４と、この絶縁枠板４の一方の面に配置された５個の黒鉛、タンタル、チタンなどの金属からなる導電部５、５・・から概略構成されている。   The anode-side separator 1 and the cathode-side separator 3 have substantially the same structure, and this separator 1 (3) is a rectangular plate-like insulator made of an insulating material such as a synthetic resin and ceramic having good heat resistance. A frame plate 4 and five conductive portions 5,... Made of metal such as graphite, tantalum, and titanium disposed on one surface of the insulating frame plate 4.

この導電部５は、いずれもその平面形状が矩形の板状となっており、絶縁枠板４に形成された凹部に埋められ、面一となっている。また、これら導電部５、５・・は、いずれも同一の平面形状を有しており、それぞれが図示のように分離されて配置されている。
また、絶縁枠板４には、ガス入口部とガス出口部とガス流路の一部が形成されており、すべての導電部５にもガス流路の残部が形成されているが、これについては、後述する。 Each of the conductive portions 5 is a plate having a rectangular planar shape, and is buried in a recess formed in the insulating frame plate 4 so as to be flush with each other. These conductive portions 5, 5,... All have the same planar shape, and are separated from each other as shown.
Further, the insulating frame plate 4 is formed with a gas inlet portion, a gas outlet portion, and a part of the gas flow path, and the remaining portion of the gas flow path is also formed in all the conductive portions 5. Will be described later.

膜電極アセンブリ２は、高分子電解質膜６と、この高分子電解質膜６の一方の面に間隔を介して配置された５個の矩形状のアノード電極７、７・・と、高分子電解質膜６の他方の面に上記アノード電極７と対応するように配置された矩形状の５個のカソード電極（図面では高分子電解質膜６の裏面側に存在し、描かれていない。）とから概略構成されている。   The membrane electrode assembly 2 includes a polymer electrolyte membrane 6, five rectangular anode electrodes 7, 7... Disposed on one surface of the polymer electrolyte membrane 6 with a gap therebetween, and a polymer electrolyte membrane 6 schematically shows five rectangular cathode electrodes (existing on the back side of the polymer electrolyte membrane 6 and not shown in the drawing) disposed on the other surface of the substrate 6 so as to correspond to the anode electrode 7. It is configured.

アノード電極７およびカソード電極は、ともに同様の構成を有するもので、例えばカーボンペーパにフッ素樹脂粉末を分散したスラリーを塗布し、この上に白金などの触媒微粉末を分散したスラリーを塗布して乾燥したフィルム状のものである。そして、このフィルムを所定の寸法に切断して高分子電解質膜６の両面に位置合わせをして配置し、加圧することで膜電極アセンブリ２が作製されるものである。   Both the anode electrode 7 and the cathode electrode have the same configuration. For example, a slurry in which a fluororesin powder is dispersed is applied to carbon paper, and a slurry in which a catalyst fine powder such as platinum is dispersed is applied thereon and dried. It is a film-like thing. Then, the membrane electrode assembly 2 is manufactured by cutting the film into a predetermined size, aligning and arranging the film on both surfaces of the polymer electrolyte membrane 6, and applying pressure.

そして、このようなアノード側セパレータ１とカソード側セパレータ３との間に膜電極アセンブリ２を挟み込んだ際に、アノード側セパレータ１およびカソード側セパレータ３に配置した各導電部５、５・・と、膜電極アセンブリ２のアノード電極７またはカソード電極とがそれぞれ相対峙するようになっており、これにより５個の単セルが構成されるようになっている。この５個の単セルは、図示しない電気配線によって直列に接続されている。   When the membrane electrode assembly 2 is sandwiched between the anode-side separator 1 and the cathode-side separator 3, the conductive portions 5, 5,. The anode electrode 7 or the cathode electrode of the membrane electrode assembly 2 is opposed to each other, so that five single cells are configured. The five single cells are connected in series by electric wiring (not shown).

図４は、上記アノード側セパレータ１またはカソード側セパレータ３に形成された流路の一例を示すものである。
図４において、符号８はガス入口部を、９はガス出口部を示す。このガス入口部８とガス出口部９は、絶縁枠板４を貫通して形成される孔であって、燃料ガスまたは酸化剤ガスが流入するようになっている。 FIG. 4 shows an example of the flow path formed in the anode side separator 1 or the cathode side separator 3.
In FIG. 4, reference numeral 8 denotes a gas inlet portion, and 9 denotes a gas outlet portion. The gas inlet portion 8 and the gas outlet portion 9 are holes formed through the insulating frame plate 4 and into which fuel gas or oxidant gas flows.

また、個々の導電部５の表面には、上記ガスの流路となる蛇行溝１０が形成されている。さらに絶縁枠板４の表面には、各導電部５に形成された蛇行溝１０を繋ぐ連結溝１１、１１・・が形成され、ガス入口部８またはガス出口部９と導電部５の蛇行溝１０とを繋ぐ補助溝１２、１２も形成されている。   Further, meandering grooves 10 serving as the gas flow paths are formed on the surfaces of the individual conductive portions 5. Further, on the surface of the insulating frame plate 4, connecting grooves 11, 11... Connecting the meandering grooves 10 formed in the respective conductive parts 5 are formed, and the meandering grooves between the gas inlet part 8 or the gas outlet part 9 and the conductive part 5 are formed. Auxiliary grooves 12 and 12 are also formed to connect 10.

さらに、これら蛇行溝１０、連結溝１１および補助溝１２によって、ガス入口部８からガス出口部９に至る１本のガスの流路が形成されている。
なお、蛇行溝１０は、図面では単純化して描いてあり、１個の導電部５において、３本以上の溝が連続して蛇行溝１０を構成する形態であってもよい。 Further, the meandering groove 10, the connecting groove 11, and the auxiliary groove 12 form a single gas flow path from the gas inlet portion 8 to the gas outlet portion 9.
Note that the meandering groove 10 may be simplified in the drawing, and three or more grooves may continuously form the meandering groove 10 in one conductive portion 5.

ここで説明の都合上、図４に描いた５個の導電部５、５・・のうち、ガス入口部８側に位置するものを１番目の導電部５−１とし、以下ガス出口部９に向けて順次２番目の導電部５−２、３番目の導電部５−３、４番目の導電部５−４、５番目の導電部５−５と呼ぶ。   Here, for convenience of explanation, among the five conductive parts 5, 5... Depicted in FIG. 4, the one located on the gas inlet 8 side is referred to as the first conductive part 5-1, and the gas outlet 9 The second conductive portion 5-2, the third conductive portion 5-3, the fourth conductive portion 5-4, and the fifth conductive portion 5-5 are called sequentially.

このようなアノード側セパレータ１またはカソード側セパレータ３にあっては、ガス入口部８から燃料ガスまたは酸化剤ガスを上記溝１０、１１、１２を経てガス出口部９に流し、膜電極アセンブリ２にこのガスを拡散させてゆくことになる。   In such an anode-side separator 1 or cathode-side separator 3, fuel gas or oxidant gas is allowed to flow from the gas inlet portion 8 to the gas outlet portion 9 through the grooves 10, 11, 12, and to the membrane electrode assembly 2. This gas will diffuse.

ところが、ガス入口部８から流入したガスは、１番目の導電部５−１の蛇行溝１０を流れ、その際ガスの一部が膜電極アセンブリ２に拡散し、その有効成分の濃度が低下した状態となって、２番目の導電部５−２に流れ込み、ここでガスの有効成分の一部がさらに消費されて３番目の導電部５−３の蛇行溝１０に流れ込む。このようにして、５番目の導電部５−５に流れ込んだガスは、その有効成分のかなりの部分が消費された状態となっている。   However, the gas flowing in from the gas inlet portion 8 flows through the meandering groove 10 of the first conductive portion 5-1, and at that time, a part of the gas diffuses into the membrane electrode assembly 2 and the concentration of the active component is lowered. In this state, the gas flows into the second conductive portion 5-2, where a part of the active component of the gas is further consumed and flows into the meandering groove 10 of the third conductive portion 5-3. In this way, the gas that has flowed into the fifth conductive portion 5-5 is in a state in which a substantial portion of its active component has been consumed.

このように、個々の導電部５におけるガス中の有効成分の濃度が大きく異なることから、これに対応する単位セルの発電能力が異なると言う不都合が生じる。
このような不都合は、個々の導電部５の周囲にダムを設け、絶縁枠板４にも同様のダムを設け、導電部２全体にガスを接触させながら、１番目の導電部５−１から５番目の導電部５−５に順次ガスを流すタイプのセパレータでも同様に生じる。
平面型燃料電池に関する先行技術として、例えば以下のものが知られている。
特許第３４２９５８５号公報 特開２００３−３１７７４５号公報 特許第３３８０８０５号公報 Thus, since the concentration of the active ingredient in the gas in each conductive part 5 is greatly different, there arises a disadvantage that the power generation capacity of the corresponding unit cell is different.
Such an inconvenience is that a dam is provided around each conductive portion 5, a similar dam is provided on the insulating frame plate 4, and gas is brought into contact with the entire conductive portion 2 from the first conductive portion 5-1. The same occurs with a separator of the type in which gas is sequentially supplied to the fifth conductive portion 5-5.
For example, the following are known as prior arts related to planar fuel cells.
Japanese Patent No. 3429585 JP 2003-317745 A Japanese Patent No. 3380805

よって、本発明における課題は、同一平面上に複数の単位セルを配置した構造を有する燃料電池において、個々の単位セルの発電性能のばらつきを抑えて、個々の単位セルの発電特性を均一化することにある。   Accordingly, an object of the present invention is to uniformize the power generation characteristics of individual unit cells in a fuel cell having a structure in which a plurality of unit cells are arranged on the same plane while suppressing variations in power generation performance of the individual unit cells. There is.

かかる課題を解決するために、
請求項１にかかる発明は、アノード側セパレータとカソード側セパレータとで膜電極アセンブリを挟んだ構造を備えた燃料電池であって、
上記アノード側セパレータまたはカソード側セパレータは、絶縁材料からなる絶縁枠板と、この絶縁枠板上に個々に分離して平面的に配置されたｎ個（ｎは２以上の整数である）の導電部と、上記絶縁枠板に形成されたガス入口部とガス出口部を備えており、
上記絶縁枠板および導電部には、燃料ガスまたは酸化剤ガスを流す流路が形成され、上記ガス入口部から流入したガスが、上記流路を経てガス出口部に流れるようになっており、
ガス入口部からのガスが１番目の導電部に流れ、ついで１番目の導電部から２番目の導電部に流れ、ついで２番目の導電部から３番目の導電部に流れ、以下同様にしてｎ番目の導電部に流れ、さらに折り返されてｎ番目の導電部からｎ−１番目の導電部に流れ、ｎ−１番目の導電部からｎ−２番目の導電部に流れ、以下同様にして１番目の導電部に流れる往復流れが１回以上繰り返されて、ガス出口部に至るように、上記流路が形成されていることを特徴とする燃料電池である。 To solve this problem,
The invention according to claim 1 is a fuel cell having a structure in which a membrane electrode assembly is sandwiched between an anode side separator and a cathode side separator,
The anode-side separator or the cathode-side separator is composed of an insulating frame plate made of an insulating material and n pieces (n is an integer of 2 or more) conductively arranged separately on the insulating frame plate. A gas inlet portion and a gas outlet portion formed on the insulating frame plate,
The insulating frame plate and the conductive part are formed with a flow path for flowing a fuel gas or an oxidant gas, and the gas flowing in from the gas inlet part flows to the gas outlet part through the flow path,
Gas from the gas inlet flows to the first conductive portion, then from the first conductive portion to the second conductive portion, then from the second conductive portion to the third conductive portion, and so on. Flows from the nth conductive part to the (n-1) th conductive part, flows from the (n-1) th conductive part to the (n-2) th conductive part, and so on. The fuel cell is characterized in that the flow path is formed so that the reciprocating flow flowing through the second conductive portion is repeated one or more times to reach the gas outlet portion.

請求項２にかかる発明は、往復流れの折り返し位置が絶縁枠板に存在するようになされていることを特徴とする請求項１記載の燃料電池である。   The invention according to claim 2 is the fuel cell according to claim 1, wherein the return position of the reciprocating flow is present in the insulating frame plate.

本発明によれば、燃料ガスまたは酸化剤ガスが個々の導電部を横断的に流れ、この流れが繰り返されて流れるようになっているため、ガスの流れに伴ってガス中の有効成分の濃度が徐々に低下しても、個々の導電部での有効成分の平均的な濃度は、導電部間でほぼ同一となる。
このため、個々の単セル間での発電特性のばらつきの小さいものとなる。 According to the present invention, since the fuel gas or the oxidant gas flows transversely through the individual conductive portions and this flow is repeated, the concentration of the active ingredient in the gas with the gas flow Even if it gradually decreases, the average concentration of the active ingredients in the individual conductive portions is substantially the same between the conductive portions.
For this reason, the variation in power generation characteristics between individual single cells is small.

図１は、本発明の燃料電池におけるアノード側セパレータまたはカソード側セパレータの一例を示すもので、図４に示したものと同一構成部分には同一符号を付してその説明を省略する。   FIG. 1 shows an example of an anode-side separator or a cathode-side separator in the fuel cell of the present invention. The same components as those shown in FIG.

この例の１番目の導電部５−１と５番目の導電部５−５においては、これに形成された溝１３は、その平面形状がコ字状となっており、このコ字状の部分が折り返し部１４となっており、この折り返し部１４が導電部５−１、５−５の長手方向に１０個並んで形成されている。導電部５−１、５−５でのガス入口部８およびガス出口部９に直接繋がる溝１３は直線状となっている。   In the first conductive portion 5-1 and the fifth conductive portion 5-5 in this example, the planar shape of the groove 13 formed in the first conductive portion 5-1 and the fifth conductive portion 5-5 is U-shaped. Is a folded portion 14, and 10 folded portions 14 are formed side by side in the longitudinal direction of the conductive portions 5-1, 5-5. The groove 13 directly connected to the gas inlet portion 8 and the gas outlet portion 9 in the conductive portions 5-1 and 5-5 is linear.

また、２番目ないし４番目の導電部５−２、５−３、５−４では、これに形成された溝１３は、導電部５を横断する直線状となっており、この溝１３が２１本所定の間隔を介して導電部５の長手方向に並んで形成されている。
さらに、絶縁枠板４の各導電部５間の部分には、導電部５に形成された多数の溝１３、１３・・をそれぞれ繋ぐ連結溝１１、１１・・が形成され、さらにはガス入口部８と１番目の導電部５−１の直線状の溝１３とを繋ぐ補助溝１２が形成され、ガス出口部９と５番目の導電部５−５の直線状の溝１３とを繋ぐ補助溝１２が形成されている。 In the second to fourth conductive portions 5-2, 5-3, and 5-4, the groove 13 formed in the second to fourth conductive portions 5-2, 5-3, and 5-4 has a linear shape that crosses the conductive portion 5. They are formed side by side in the longitudinal direction of the conductive portion 5 with a predetermined interval.
Further, in the portion between the conductive portions 5 of the insulating frame plate 4, there are formed connection grooves 11, 11,... That connect a number of grooves 13, 13,. An auxiliary groove 12 that connects the portion 8 and the linear groove 13 of the first conductive portion 5-1 is formed, and an auxiliary that connects the gas outlet portion 9 and the linear groove 13 of the fifth conductive portion 5-5 is formed. A groove 12 is formed.

そして、これら溝１１、１２、１３は、図示のように、ガス入口部８からガス出口部９に向けて一筆書きのように連結されて１本の溝となっており、この溝がガスの流路となっている。   As shown in the figure, these grooves 11, 12, and 13 are connected as a single stroke from the gas inlet 8 toward the gas outlet 9 to form one groove. It is a flow path.

次にこの例のセパレータにおけるガスの流れについて説明する。
ガス入口部８からのガスは、補助溝１２から１番目の導電部５−１の直線状の溝１３に入り、１番目の導電部５−１を横断して連結溝１１から２番目の導電部５−２の溝１３に入り、以下同様にして５番目の導電部５−５の溝１３に至り、ここの折り返し部１４で折り返される。 Next, the gas flow in the separator of this example will be described.
The gas from the gas inlet portion 8 enters the linear groove 13 of the first conductive portion 5-1 from the auxiliary groove 12, crosses the first conductive portion 5-1, and the second conductive portion from the connecting groove 11. It enters into the groove 13 of the part 5-2, and reaches the groove 13 of the fifth conductive part 5-5 in the same manner.

さらに、５番目の導電部５−５の溝１３から４番目の導電部５−４の溝１３に流れ、以下同様にして１番目の導電部５−１に流れ、ここの折り返し部１４で折り返される。
このように、１番目の導電部５−１から５番目の導電部５−５にかけて、これらの導電部を横断する往復の流れが繰り返されて、最終的に５番目の導電部５−５の溝１３から補助溝１２を通り、ガス出口部９に至ることになる。 Furthermore, it flows from the groove 13 of the fifth conductive portion 5-5 to the groove 13 of the fourth conductive portion 5-4, and then flows to the first conductive portion 5-1 in the same manner, and is folded at the folding portion 14 here. It is.
In this way, the reciprocating flow across these conductive portions is repeated from the first conductive portion 5-1 to the fifth conductive portion 5-5, and finally the fifth conductive portion 5-5 The gas passes through the auxiliary groove 12 from the groove 13 to the gas outlet 9.

このようにガスを流すことにより、ガスの流れに伴って、ガス中の有効成分が徐々に減少して行くが、ガスが１番目の導電部５−１から５番目の導電部５−５に横断的に次々に流れ、これが往復して９回繰り返されるため、導電部５の１個当たりにおけるガスの有効成分の濃度が平均化されることになる。
このため、各単セルでの発電能力のばらつきが小さいものとなる。 By flowing the gas in this way, the active component in the gas gradually decreases with the gas flow, but the gas moves from the first conductive portion 5-1 to the fifth conductive portion 5-5. Since the gas flows one after another and is repeated 9 times, the concentration of the active component of the gas per one conductive portion 5 is averaged.
For this reason, the dispersion | variation in the electric power generation capability in each single cell becomes a small thing.

図２は、本発明におけるアノード側セパレータまたはカソード側セパレータの他の例を示すもので、この例では、溝１３の折り返し点１４が１番目の導電部５−１と５番目の導電部５−５の外方の絶縁枠体４に形成されているところが先の例と異なるところである。   FIG. 2 shows another example of the anode-side separator or the cathode-side separator in the present invention. In this example, the turn-back point 14 of the groove 13 is the first conductive portion 5-1 and the fifth conductive portion 5-. 5 is different from the previous example in that it is formed on the outer insulating frame 4.

この例においては、１番目の導電部５−１および５番目の導電部５−５における溝１３の形状が、これ以外の導電部５−２、５−３、５−４のそれとほぼ同一となっている。このため、導電部５の１個当たりの平均的なガス中の有効成分量がより均一となって、単セルの発電性能のばらつきがさらに小さいものとなる効果がある。   In this example, the shape of the groove 13 in the first conductive portion 5-1 and the fifth conductive portion 5-5 is substantially the same as that of the other conductive portions 5-2, 5-3, and 5-4. It has become. For this reason, the effective component amount in the average gas per one conductive portion 5 becomes more uniform, and there is an effect that the variation in the power generation performance of the single cell is further reduced.

本発明におけるアノード側セパレータまたはカソード側セパレータの一例を示す平面図である。It is a top view which shows an example of the anode side separator or cathode side separator in this invention. 本発明におけるアノード側セパレータまたはカソード側セパレータの他の例を示す平面図である。It is a top view which shows the other example of the anode side separator in this invention, or a cathode side separator. 本発明における平面型燃料電池の基本構造を示す概略分解斜視図である。1 is a schematic exploded perspective view showing a basic structure of a planar fuel cell in the present invention. 従来のアノード側セパレータまたはカソード側セパレータの一例を示す平面図である。It is a top view which shows an example of the conventional anode side separator or cathode side separator.

符号の説明Explanation of symbols

１・・アノード側セパレータ、２・・膜電極アセンブリ、３・・カソード側セパレータ、４・・絶縁枠板、５・・導電部、８・・ガス入口部、９・・ガス出口部、１１・・連結溝、１２・・補助溝、１３・・溝、１４・・折り返し部
1 .... Anode separator, 2 .... Membrane electrode assembly, 3 .... Cathode separator, 4 .... Insulating frame plate, 5 .... Conducting part, 8 .... Gas inlet, 9 .... Gas outlet, 11.・ Connecting groove, 12 ・ ・ Auxiliary groove, 13 ・ ・ Groove, 14 ・ ・ Folded part

Claims (2)

アノード側セパレータとカソード側セパレータとで膜電極アセンブリを挟んだ構造を備えた燃料電池であって、
上記アノード側セパレータまたはカソード側セパレータは、絶縁材料からなる絶縁枠板と、この絶縁枠板上に個々に分離して平面的に配置されたｎ個（ｎは２以上の整数である）の導電部と、上記絶縁枠板に形成されたガス入口部とガス出口部を備えており、
上記絶縁枠板および導電部には、燃料ガスまたは酸化剤ガスを流す流路が形成され、上記ガス入口部から流入したガスが、上記流路を経てガス出口部に流れるようになっており、
ガス入口部からのガスが１番目の導電部に流れ、ついで１番目の導電部から２番目の導電部に流れ、ついで２番目の導電部から３番目の導電部に流れ、以下同様にしてｎ番目の導電部に流れ、さらに折り返されてｎ番目の導電部からｎ−１番目の導電部に流れ、ｎ−１番目の導電部からｎ−２番目の導電部に流れ、以下同様にして１番目の導電部に流れる往復流れが１回以上繰り返されて、ガス出口部に至るように、上記流路が形成されていることを特徴とする燃料電池。 A fuel cell having a structure in which a membrane electrode assembly is sandwiched between an anode side separator and a cathode side separator,
The anode-side separator or the cathode-side separator is composed of an insulating frame plate made of an insulating material and n pieces (n is an integer of 2 or more) conductively arranged separately on the insulating frame plate. A gas inlet portion and a gas outlet portion formed on the insulating frame plate,
The insulating frame plate and the conductive part are formed with a flow path for flowing a fuel gas or an oxidant gas, and the gas flowing in from the gas inlet part flows to the gas outlet part through the flow path,
Gas from the gas inlet flows to the first conductive portion, then from the first conductive portion to the second conductive portion, then from the second conductive portion to the third conductive portion, and so on. Flows from the nth conductive part to the (n-1) th conductive part, flows from the (n-1) th conductive part to the (n-2) th conductive part, and so on. A fuel cell, wherein the flow path is formed so that the reciprocating flow flowing through the second conductive portion is repeated one or more times to reach the gas outlet portion. 往復流れの折り返し位置が絶縁枠板に存在するようになされていることを特徴とする請求項１記載の燃料電池。
2. The fuel cell according to claim 1, wherein the return position of the reciprocating flow is present in the insulating frame plate.
JP2005141706A 2005-05-13 2005-05-13 Fuel cell Pending JP2006318823A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005141706A JP2006318823A (en) 2005-05-13 2005-05-13 Fuel cell

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005141706A JP2006318823A (en) 2005-05-13 2005-05-13 Fuel cell

Publications (1)

Publication Number Publication Date
JP2006318823A true JP2006318823A (en) 2006-11-24

Family

ID=37539300

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005141706A Pending JP2006318823A (en) 2005-05-13 2005-05-13 Fuel cell

Country Status (1)

Country Link
JP (1) JP2006318823A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011216310A (en) * 2010-03-31 2011-10-27 Eneos Celltech Co Ltd Fuel cell, separator, and fuel cell system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002280048A (en) * 2001-03-16 2002-09-27 Toyota Motor Corp Fuel cell
JP2004319430A (en) * 2002-11-28 2004-11-11 Toshiba Corp Direct type fuel cell generator
JP2006278164A (en) * 2005-03-29 2006-10-12 Kyocera Corp Fuel cell

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002280048A (en) * 2001-03-16 2002-09-27 Toyota Motor Corp Fuel cell
JP2004319430A (en) * 2002-11-28 2004-11-11 Toshiba Corp Direct type fuel cell generator
JP2006278164A (en) * 2005-03-29 2006-10-12 Kyocera Corp Fuel cell

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011216310A (en) * 2010-03-31 2011-10-27 Eneos Celltech Co Ltd Fuel cell, separator, and fuel cell system

Similar Documents

Publication Publication Date Title
US7476459B2 (en) Membrane electrode assembly and fuel cell
KR100938948B1 (en) Polymer electrolyte fuel cell
KR101016572B1 (en) Integrated current collector and electrical component plate for a fuel cell stack
US7390586B2 (en) Fuel cell stacks of alternating polarity membrane electrode assemblies
JP4598287B2 (en) FUEL CELL STACK AND METHOD OF OPERATING FUEL CELL STACK
US20030064277A1 (en) Fuel cell stack
US8846269B2 (en) Polymer electrolyte fuel cell and fuel cell stack comprising the same
US20090017355A1 (en) Solid polymer fuel cell
EP2991148B1 (en) Insulating structure, fuel cell and fuel cell stack
JP2006260916A (en) Fuel cell
JP2004079245A (en) Fuel cell
JP4894062B2 (en) Fuel cell
US8283086B2 (en) Fuel cell and fuel cell stack
WO2010029758A1 (en) Polymer electrolyte fuel cell and fuel cell stack provided with same
WO2010109795A1 (en) Solid polymer fuel cell and separator for solid polymer fuel cell
US20130011762A1 (en) Direct oxidation fuel cell
JP2006318823A (en) Fuel cell
JP4572252B2 (en) Fuel cell stack
JP2006269409A (en) Solid oxide fuel cell, sofc
JPH1021944A (en) Solid polymer electrolyte fuel cell
JP5183130B2 (en) Fuel cell
JP2007005222A (en) Fuel cell and separator for fuel cell
JP2004158435A (en) Fuel cell and operation method thereof
JP2004303651A (en) Planar laminated layer type fuel battery
JP2006012462A (en) Sealing structure for fuel cell

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20080327

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20110623

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20110628

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20111025