WO2015174235A1 - Gasket for fuel cell - Google Patents
Gasket for fuel cell Download PDFInfo
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- WO2015174235A1 WO2015174235A1 PCT/JP2015/062329 JP2015062329W WO2015174235A1 WO 2015174235 A1 WO2015174235 A1 WO 2015174235A1 JP 2015062329 W JP2015062329 W JP 2015062329W WO 2015174235 A1 WO2015174235 A1 WO 2015174235A1
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- WIPO (PCT)
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- fuel cell
- gasket
- outer peripheral
- inner peripheral
- peripheral seal
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
-
- 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
Definitions
- the present invention relates to a gasket used as a fuel cell sealing means and interposed between fuel cell components.
- Patent Document 1 discloses a gasket made of an elastic material as a component of a fuel cell, such as a separator, MEA (Membrane Electrode Assembly) or GDL (Gas Diffusion Layer substrate).
- a rubber gasket vulcanized and formed on an adhesive layer is fixed to a sealing target substrate of a fuel cell separator via the adhesive layer.
- Patent Document 3 and Patent Document 4 describe a rubber gasket (rubber-only product) in which a vulcanized rubber gasket is incorporated between components of a fuel cell.
- FIG. 3 shows an example using a rubber-only gasket 101 as in Patent Document 3 and Patent Document 4, and this gasket 101 has a circular cross-sectional shape as shown in FIG. As shown in FIG. 3 (B), it is interposed between a groove 102a formed in one separator 102 and the other separator 103 in an appropriately compressed state.
- the rubber-only product 101 is most preferable from the viewpoint of cost reduction, including the manufacturing process. Moreover, since it is pressed against the side wall 102b of the groove 102a by the pressure P of the fluid to be sealed, a self-sealing effect can also be expected.
- the separators 102 and 103 are not in contact with each other, and the gasket 101 has a low compression between the groove 102a formed in one separator 102 and the other separator 103.
- the pressure P of the fluid to be sealed is increased, the pressure P causes the gap 101 between the groove shoulder of the groove 102a of the separator 102 and the other separator 103 to be part 101a of the gasket 101. There is a concern that it will stick out and be damaged, making it impossible to maintain the sealing performance.
- the present invention has been made in view of the above points, and its technical problem is to secure a stable sealing property in a gasket interposed between fuel battery cell components, and to provide a fuel cell. It is to enable thinning of cell components.
- a fuel cell gasket according to the present invention is a gasket interposed between a pair of fuel cell components, and the fuel cell components
- An inner peripheral seal portion formed of seal protrusions provided on both sides in the thickness direction to be in close contact with the outer peripheral side of the inner peripheral seal portion and provided on both sides in the thickness direction in close contact with the fuel cell component parts
- the outer peripheral support part which consists of a support protrusion, and the intermediate
- the outer peripheral support part has the function of suppressing the displacement of the inner peripheral seal part and inducing a self-sealing action like the side wall of the gasket installation groove, so that it is not necessary to form a gasket installation groove on the fuel cell component parts. It can be.
- the displacement of the inner peripheral seal portion due to the pressure of the fluid to be sealed is suppressed by the outer peripheral support portion via the intermediate coupling portion, and thus the self-sealing action of the inner peripheral seal portion is excellent. Therefore, it is not necessary to form a gasket mounting groove in the fuel cell component parts, and the cost can be reduced. In addition, since it is not necessary to form the gasket mounting groove, it is possible to reduce the thickness of the fuel cell component parts, thereby contributing to the miniaturization of the fuel cell.
- FIG. 4 is a cross-sectional view showing a state in which deformation is caused by the pressure of a fluid to be sealed in a preferred embodiment of the gasket for a fuel cell according to the present invention.
- FIG. 4 is a cross-sectional view showing a state in which deformation is caused by the pressure of a fluid to be sealed in a preferred embodiment of the gasket for a fuel cell according to the present invention.
- FIG. 4 is a cross-sectional view showing a state in which deformation is caused by the pressure of a fluid to be sealed in a preferred embodiment of the gasket for a fuel cell according to the present invention.
- FIG. 4 is a cross-sectional view showing a state in which deformation is caused by the pressure of a fluid to be sealed in a preferred embodiment of the gasket for a fuel cell according to the present invention.
- FIG. 4 is a cross-sectional view showing a state in which deformation is caused by the pressure of a fluid to be sealed in a preferred embodiment of the gasket for
- FIGS. 1 and 2 a preferred embodiment of a gasket for a fuel cell according to the present invention will be described with reference to FIGS. 1 and 2.
- a fuel cell gasket 1 of this embodiment is a vulcanized molded product of an annular rubber made of a single rubber-like elastic material (rubber material or synthetic resin material having rubber-like elasticity). (Rubber-only product), which connects the inner peripheral seal portion 11, the outer peripheral support portion 12 provided on the outer peripheral side of the inner peripheral seal portion 11, and the inner peripheral seal portion 11 and the outer peripheral support portion 12. It consists of the intermediate
- the gasket 1 is interposed between the separators 2 and 3 which are fuel cell component parts in an appropriate compressed state.
- Seal protrusions 11a and 11b that are in close contact with the separators 2 and 3 are provided on both sides in the thickness direction
- the outer peripheral support portion 12 is a support protrusion 12a and 12b that is in close contact with the separators 2 and 3 on both sides in the thickness direction.
- the intermediate connecting portion 13 is formed so as to connect the intermediate positions in the thickness direction (height direction) of the inner peripheral seal portion 11 and the outer peripheral support portion 12 to each other. It has a substantially H-shaped cross-sectional shape with a narrowed middle portion in the direction.
- the width dimension w from the inner surface of the inner peripheral seal portion 11 to the outer surface of the outer peripheral support portion 12 is the thickness of the inner peripheral seal portion 11 and the outer peripheral support portion 12.
- the contact surfaces of the seal protrusions 11a and 11b of the inner peripheral seal portion 11 and the separators 2 and 3 of the support protrusions 12a and 12b of the outer peripheral support portion 12 are formed flat.
- the fuel cell gasket 1 having the above-described configuration is interposed between the separators 2 and 3 at a relatively low compression rate, as shown in FIG.
- the pressure P of the fluid to be sealed for example, fuel gas, oxidant gas, refrigerant, etc.
- the inner peripheral seal portion 11 that directly receives this pressure P has a relatively low pressure on the outer peripheral side (see FIG.
- the seal protrusions 11a and 11b are pressed against the separators 2 and 3 to generate a frictional force, the intermediate portion in the thickness direction is compressed so as to be recessed toward the low pressure side.
- the compressive force is transmitted to the outer peripheral support portion 12 via the intermediate connecting portion 13, and the displacement in the width direction of the outer peripheral support portion 12 is caused by deformation of the intermediate connecting portion 13 and support protrusions for the separators 2 and 3. It is suppressed by the frictional force of 12a, 12b.
- the outer peripheral support portion 12 has a function of suppressing the displacement in the width direction of the inner peripheral seal portion 11 and causing a self-sealing action, it is not necessary to form a gasket mounting groove in the separator 2 or 3. As a result, not only the manufacturing cost can be reduced, but also the thickness of the separator 2 or 3 can be reduced to contribute to the miniaturization of the fuel cell.
- the gasket 1 has a width dimension w from the inner side surface of the inner peripheral seal part 11 to the outer side surface of the outer peripheral support part 12 larger than the thickness dimension t of the inner peripheral seal part 11 and the outer peripheral support part 12.
- the close contact surfaces of the seal protrusions 11a and 11b of the inner peripheral seal portion 11 and the support protrusions 12a and 12b of the outer peripheral support portion 12 with the separators 2 and 3 are formed flat, It will be hard to fall down.
- the compression rate of the outer peripheral support part 12 is higher than that of the inner peripheral seal part 11.
- the thickness t dimension of the inner peripheral seal portion 11 and the outer peripheral support portion 12 is increased so that the contact area of the support protrusions 12a and 12b with respect to the separators 2 and 3 is different from the contact area of the seal protrusions 11a and 11b.
Abstract
Provided is a gasket (1) disposed between fuel cell constituting parts (2, 3), the gasket (1) being configured so as to ensure consistent sealing properties and so as to enable a reduction in the thickness of the fuel cell constituting parts (2, 3). In order to achieve the purpose, the gasket (1) disposed between the pair of the fuel cell constituting parts (2, 3) is provided with: an inner peripheral seal section (11) comprising seal ridges (11a, 11b) which are provided on both sides of the inner peripheral seal section (11) in the thickness direction thereof and which come into close contact with the fuel cell constituting parts (2, 3); an outer peripheral support section (12) located on the outer peripheral side of the inner peripheral seal section (11) and comprising support ridges (12a, 12b) which are provided on both sides of the outer peripheral support section (12) in the thickness direction thereof and which come into close contact with the fuel cell constituting parts (2, 3); and an intermediate connection section (13) for connecting the inner peripheral seal section (11) and the outer peripheral support section (12).
Description
本発明は、燃料電池セルのシール手段として用いられ、燃料電池セル構成部品間に介装されるガスケットに関する。
The present invention relates to a gasket used as a fuel cell sealing means and interposed between fuel cell components.
従来から、燃料電池用ガスケットとして下記の先行技術文献に開示されたようなものが知られている。
Conventionally, those disclosed in the following prior art documents are known as fuel cell gaskets.
このうち、特許文献１には、セパレータ、ＭＥＡ（Membrane Electrode Assembly：膜－電極複合体）あるいはＧＤＬ(Gas Diffusion Layer：ガス拡散層基材)等、燃料電池セルの構成部品に弾性体からなるガスケットを一体に射出成形することが記載されており、特許文献２には、接着剤層に加硫成形したゴム製ガスケットを、前記接着剤層を介して燃料電池のセパレータのシール対象基材に固着することが記載されており、特許文献３及び特許文献４には、加硫成形したゴム製ガスケット単体を燃料電池セルの構成部品間に組み込むもの（ラバーオンリー品）が記載されている。図３は、特許文献３及び特許文献４のようにラバーオンリー品によるガスケット１０１を用いた例を示すもので、このガスケット１０１は、図３（Ａ）に示すように断面形状が円形であり、図３（Ｂ）に示すように一方のセパレータ１０２に形成された溝１０２ａと他方のセパレータ１０３との間に適宜圧縮状態で介在させるものである。
Among them, Patent Document 1 discloses a gasket made of an elastic material as a component of a fuel cell, such as a separator, MEA (Membrane Electrode Assembly) or GDL (Gas Diffusion Layer substrate). In Patent Document 2, a rubber gasket vulcanized and formed on an adhesive layer is fixed to a sealing target substrate of a fuel cell separator via the adhesive layer. Patent Document 3 and Patent Document 4 describe a rubber gasket (rubber-only product) in which a vulcanized rubber gasket is incorporated between components of a fuel cell. FIG. 3 shows an example using a rubber-only gasket 101 as in Patent Document 3 and Patent Document 4, and this gasket 101 has a circular cross-sectional shape as shown in FIG. As shown in FIG. 3 (B), it is interposed between a groove 102a formed in one separator 102 and the other separator 103 in an appropriately compressed state.
そして、燃料電池の普及には構成部品の低コスト化を図ることが重要であり、このような観点から、図３のように、セパレータ１０２，１０３など燃料電池セルの構成部品間に組み込むだけのラバーオンリー品のガスケット１０１は、製造工程も含め、低コスト化の観点から最も好ましい。しかも、シール対象流体の圧力Ｐによって溝１０２ａの側壁１０２ｂに押し付けられるので、セルフシール効果も期待できる。
In order to popularize fuel cells, it is important to reduce the cost of the components. From such a viewpoint, as shown in FIG. The rubber-only product 101 is most preferable from the viewpoint of cost reduction, including the manufacturing process. Moreover, since it is pressed against the side wall 102b of the groove 102a by the pressure P of the fluid to be sealed, a self-sealing effect can also be expected.
しかしながらこの種のガスケット１０１は、図４に示すようにセパレータ１０２，１０３が互いに接触しておらず、ガスケット１０１が一方のセパレータ１０２に形成された溝１０２ａと他方のセパレータ１０３との間に低圧縮状態で介在しているような場合、シール対象流体の圧力Ｐの上昇時には、この圧力Ｐによってセパレータ１０２の溝１０２ａの溝肩と他方のセパレータ１０３との間の隙間δへガスケット１０１の一部１０１ａがはみ出して損傷を受け、シール性を維持できなくなる懸念がある。
However, in this type of gasket 101, as shown in FIG. 4, the separators 102 and 103 are not in contact with each other, and the gasket 101 has a low compression between the groove 102a formed in one separator 102 and the other separator 103. When the pressure P of the fluid to be sealed is increased, the pressure P causes the gap 101 between the groove shoulder of the groove 102a of the separator 102 and the other separator 103 to be part 101a of the gasket 101. There is a concern that it will stick out and be damaged, making it impossible to maintain the sealing performance.
また、燃料電池セルの小型化を図るには、セパレータ１０２，１０３などの厚さも薄くする必要があるが、セパレータ１０２に溝１０２ａを設けているため、所要の溝深さを確保する観点から、薄肉化は困難であった。
Further, in order to reduce the size of the fuel cell, it is necessary to reduce the thickness of the separators 102, 103, etc., but since the separator 102 is provided with the groove 102a, from the viewpoint of securing a required groove depth, Thinning was difficult.
本発明は、以上のような点に鑑みてなされたものであって、その技術的課題は、燃料電池セル構成部品間に介装されるガスケットにおいて、安定したシール性を確保すると共に、燃料電池セル構成部品の薄肉化を可能にすることにある。
The present invention has been made in view of the above points, and its technical problem is to secure a stable sealing property in a gasket interposed between fuel battery cell components, and to provide a fuel cell. It is to enable thinning of cell components.
上述した技術的課題を有効に解決するための手段として、本発明に係る燃料電池用ガスケットは、一対の燃料電池セル構成部品の間に介装されるガスケットであって、前記燃料電池セル構成部品と密接される厚さ方向両側に設けたシール突条からなる内周シール部と、この内周シール部の外周側にあって前記燃料電池セル構成部品と密接される厚さ方向両側に設けた支持突条からなる外周支持部と、前記内周シール部と外周支持部の間を連結する中間連結部を備えるものである。
As a means for effectively solving the above technical problem, a fuel cell gasket according to the present invention is a gasket interposed between a pair of fuel cell components, and the fuel cell components An inner peripheral seal portion formed of seal protrusions provided on both sides in the thickness direction to be in close contact with the outer peripheral side of the inner peripheral seal portion and provided on both sides in the thickness direction in close contact with the fuel cell component parts The outer peripheral support part which consists of a support protrusion, and the intermediate | middle connection part which connects between the said inner peripheral seal part and an outer peripheral support part are provided.
上記構成のガスケットは、一対の燃料電池セル構成部品の間に介装された状態において、内周シール部がその内周側からシール対象流体の圧力を受けると、この圧力による外周側への内周シール部の変位力が中間連結部を介して外周支持部に伝達され、この外周支持部の支持突条と燃料電池セル構成部品との間の摩擦力によって変位が抑制される。このため内周シール部の変位が抑制されて、シール対象流体の圧力によって燃料電池セル構成部品に対する内周シール部のシール突条の面圧が増大するセルフシール作用が得られるので優れたシール性を奏する。また、外周支持部が、ガスケット装着溝の側壁と同様、内周シール部の変位を抑えてセルフシール作用を惹起する機能を有することで、燃料電池セル構成部品へのガスケット装着溝の形成を不要とすることができる。
In the state where the gasket having the above configuration is interposed between a pair of fuel cell components, when the inner peripheral seal portion receives the pressure of the fluid to be sealed from the inner peripheral side, The displacement force of the peripheral seal portion is transmitted to the outer peripheral support portion via the intermediate connecting portion, and the displacement is suppressed by the frictional force between the support protrusion of the outer peripheral support portion and the fuel cell component. For this reason, the displacement of the inner peripheral seal portion is suppressed, and a self-sealing action is obtained in which the surface pressure of the seal protrusion of the inner peripheral seal portion on the fuel cell component is increased by the pressure of the fluid to be sealed, so that excellent sealing performance Play. In addition, the outer peripheral support part has the function of suppressing the displacement of the inner peripheral seal part and inducing a self-sealing action like the side wall of the gasket installation groove, so that it is not necessary to form a gasket installation groove on the fuel cell component parts. It can be.
本発明に係る燃料電池用ガスケットによれば、シール対象流体の圧力による内周シール部の変位が中間連結部を介して外周支持部によって抑制されるので、内周シール部のセルフシール作用によって優れたシール性が得られ、またこのため、燃料電池セル構成部品へのガスケット装着溝の形成が不要となって、低コスト化を図ることができる。しかもガスケット装着溝の形成が不要となることで燃料電池セル構成部品の薄肉化を図ることができ、ひいては燃料電池の小型化に寄与することができる。
According to the fuel cell gasket according to the present invention, the displacement of the inner peripheral seal portion due to the pressure of the fluid to be sealed is suppressed by the outer peripheral support portion via the intermediate coupling portion, and thus the self-sealing action of the inner peripheral seal portion is excellent. Therefore, it is not necessary to form a gasket mounting groove in the fuel cell component parts, and the cost can be reduced. In addition, since it is not necessary to form the gasket mounting groove, it is possible to reduce the thickness of the fuel cell component parts, thereby contributing to the miniaturization of the fuel cell.
以下、本発明に係る燃料電池用ガスケットの好ましい実施の形態について、図１及び図２を参照しながら説明する。
Hereinafter, a preferred embodiment of a gasket for a fuel cell according to the present invention will be described with reference to FIGS. 1 and 2.
図１（Ａ）に示すように、この実施の形態の燃料電池用ガスケット１は、ゴム状弾性材料（ゴム材料又はゴム状弾性を有する合成樹脂材料）の単体からなる環状ラバーの加硫成形品（ラバーオンリー品）であって、内周シール部１１と、この内周シール部１１の外周側に設けられた外周支持部１２と、前記内周シール部１１と外周支持部１２の間を連結する中間連結部１３からなる。
As shown in FIG. 1 (A), a fuel cell gasket 1 of this embodiment is a vulcanized molded product of an annular rubber made of a single rubber-like elastic material (rubber material or synthetic resin material having rubber-like elasticity). (Rubber-only product), which connects the inner peripheral seal portion 11, the outer peripheral support portion 12 provided on the outer peripheral side of the inner peripheral seal portion 11, and the inner peripheral seal portion 11 and the outer peripheral support portion 12. It consists of the intermediate | middle connection part 13 to do.
図１（Ｂ）に示すように、このガスケット１は、燃料電池セル構成部品であるセパレータ２，３間に適当な圧縮状態で介装されるものであって、内周シール部１１は、その厚さ方向両側にセパレータ２，３と密接されるシール突条１１ａ，１１ｂを有し、外周支持部１２は、その厚さ方向両側に前記セパレータ２，３と密接される支持突条１２ａ，１２ｂを有し、中間連結部１３は、内周シール部１１と外周支持部１２の厚さ方向（高さ方向）の中間位置を互いに連結するように形成されており、したがってこのガスケット１は、幅方向中間部がくびれた略Ｈ字形の断面形状を有する。
As shown in FIG. 1 (B), the gasket 1 is interposed between the separators 2 and 3 which are fuel cell component parts in an appropriate compressed state. Seal protrusions 11a and 11b that are in close contact with the separators 2 and 3 are provided on both sides in the thickness direction, and the outer peripheral support portion 12 is a support protrusion 12a and 12b that is in close contact with the separators 2 and 3 on both sides in the thickness direction. The intermediate connecting portion 13 is formed so as to connect the intermediate positions in the thickness direction (height direction) of the inner peripheral seal portion 11 and the outer peripheral support portion 12 to each other. It has a substantially H-shaped cross-sectional shape with a narrowed middle portion in the direction.
また、図１（Ａ）に示す未装着状態において、内周シール部１１の内側面から外周支持部１２の外側面までの幅寸法ｗは、内周シール部１１及び外周支持部１２の厚さ寸法ｔよりも大きく、内周シール部１１のシール突条１１ａ，１１ｂ及び外周支持部１２の支持突条１２ａ，１２ｂのセパレータ２，３との密接面が平坦に形成されている。
1A, the width dimension w from the inner surface of the inner peripheral seal portion 11 to the outer surface of the outer peripheral support portion 12 is the thickness of the inner peripheral seal portion 11 and the outer peripheral support portion 12. The contact surfaces of the seal protrusions 11a and 11b of the inner peripheral seal portion 11 and the separators 2 and 3 of the support protrusions 12a and 12b of the outer peripheral support portion 12 are formed flat.
上述の構成を備える燃料電池用ガスケット１は、セパレータ２，３間に比較的低い圧縮率で介装された状態において、図２に示すように、ガスケット１の内周側（図２における左側）に存在するシール対象流体（例えば燃料ガス、酸化剤ガス、冷媒など）の圧力Ｐが上昇した場合は、この圧力Ｐを直接受ける内周シール部１１が、相対的に低圧である外周側（図中右側）へ向けて変位しようとするが、シール突条１１ａ，１１ｂがセパレータ２，３に押し付けられて摩擦力を発生するので、厚さ方向中間部が低圧側へ凹むように圧縮される。そしてその圧縮力は、中間連結部１３を介して外周支持部１２へ伝達されるが、外周支持部１２の幅方向の変位は、中間連結部１３の変形や、セパレータ２，３に対する支持突条１２ａ，１２ｂの摩擦力によって抑制される。
As shown in FIG. 2, the fuel cell gasket 1 having the above-described configuration is interposed between the separators 2 and 3 at a relatively low compression rate, as shown in FIG. When the pressure P of the fluid to be sealed (for example, fuel gas, oxidant gas, refrigerant, etc.) is increased, the inner peripheral seal portion 11 that directly receives this pressure P has a relatively low pressure on the outer peripheral side (see FIG. Although the seal protrusions 11a and 11b are pressed against the separators 2 and 3 to generate a frictional force, the intermediate portion in the thickness direction is compressed so as to be recessed toward the low pressure side. The compressive force is transmitted to the outer peripheral support portion 12 via the intermediate connecting portion 13, and the displacement in the width direction of the outer peripheral support portion 12 is caused by deformation of the intermediate connecting portion 13 and support protrusions for the separators 2 and 3. It is suppressed by the frictional force of 12a, 12b.
このため、圧力Ｐによる内周シール部１１の幅方向の変位は、中間連結部１３を介して外周支持部１２により抑制され、圧力Ｐによる内周シール部１１の圧縮力がセパレータ２，３へのシール突条１１ａ，１１ｂの面圧に変換されることによるセルフシール作用が得られ、シール効果が向上する。
For this reason, the displacement in the width direction of the inner peripheral seal portion 11 due to the pressure P is suppressed by the outer peripheral support portion 12 via the intermediate connecting portion 13, and the compressive force of the inner peripheral seal portion 11 due to the pressure P is applied to the separators 2 and 3. A self-sealing action is obtained by conversion to the surface pressure of the seal protrusions 11a and 11b, and the sealing effect is improved.
しかも、外周支持部１２が、内周シール部１１の幅方向の変位を抑えてセルフシール作用を惹起する機能を有することで、セパレータ２又は３へのガスケット装着溝の形成を不要とすることができ、その結果、製造コストの低減を図ることができるばかりでなく、セパレータ２又は３の厚さを低減して燃料電池の小型化にも貢献することができる。
Moreover, since the outer peripheral support portion 12 has a function of suppressing the displacement in the width direction of the inner peripheral seal portion 11 and causing a self-sealing action, it is not necessary to form a gasket mounting groove in the separator 2 or 3. As a result, not only the manufacturing cost can be reduced, but also the thickness of the separator 2 or 3 can be reduced to contribute to the miniaturization of the fuel cell.
また、上記構成の燃料電池用ガスケット１は、セパレータ２，３間に比較的高い圧縮率で介装された場合、中間連結部１３によるくびれ形状となっていることによって、圧縮反力（面圧）の増大が抑制され、このためセパレータ２，３に作用する負荷も抑制される。
In addition, when the fuel cell gasket 1 having the above-described configuration is interposed between the separators 2 and 3 at a relatively high compression rate, a compression reaction force (surface pressure) is obtained due to a constricted shape by the intermediate connecting portion 13. ) Is suppressed, so that the load acting on the separators 2 and 3 is also suppressed.
また、このガスケット１は、内周シール部１１の内側面から外周支持部１２の外側面までの幅寸法ｗを、内周シール部１１及び外周支持部１２の厚さ寸法ｔよりも大きなものとすると共に、内周シール部１１のシール突条１１ａ，１１ｂ及び外周支持部１２の支持突条１２ａ，１２ｂのセパレータ２，３との密接面を平坦に形成したため、セパレータ２，３間に組み込む際に倒れにくいものとなる。
Further, the gasket 1 has a width dimension w from the inner side surface of the inner peripheral seal part 11 to the outer side surface of the outer peripheral support part 12 larger than the thickness dimension t of the inner peripheral seal part 11 and the outer peripheral support part 12. In addition, since the close contact surfaces of the seal protrusions 11a and 11b of the inner peripheral seal portion 11 and the support protrusions 12a and 12b of the outer peripheral support portion 12 with the separators 2 and 3 are formed flat, It will be hard to fall down.
なお、セパレータ２，３に対する外周支持部１２の支持突条１２ａ，１２ｂの摩擦力は、セパレータ２，３に対する内周シール部１１のシール突条１１ａ，１１ｂの摩擦力と同等であっても、圧力Ｐによる内周シール部１１の幅方向の変位を抑制する作用は得られるが、外周支持部１２の支持突条１２ａ，１２ｂの摩擦力を内周シール部１１のシール突条１１ａ，１１ｂの摩擦力より大きくすることが一層好ましい。
In addition, even if the frictional force of the support protrusions 12a and 12b of the outer peripheral support part 12 with respect to the separators 2 and 3 is equal to the frictional force of the seal protrusions 11a and 11b of the inner peripheral seal part 11 with respect to the separators 2 and 3, Although the effect | action which suppresses the displacement of the inner peripheral seal part 11 by the pressure P in the width direction is acquired, the frictional force of the support protrusions 12a and 12b of the outer peripheral support part 12 is applied to the seal protrusions 11a and 11b of the inner peripheral seal part 11. More preferably, it is larger than the frictional force.
外周支持部１２の支持突条１２ａ，１２ｂの摩擦力を内周シール部１１のシール突条１１ａ，１１ｂの摩擦力より大きくするには、外周支持部１２の圧縮率が内周シール部１１より大きくなるように内周シール部１１と外周支持部１２の厚さｔ寸法に差をもたせることや、セパレータ２，３に対する支持突条１２ａ，１２ｂの接触面積がシール突条１１ａ，１１ｂの接触面積より大きくなるように内周シール部１１と外周支持部１２の幅寸法に差をもたせることや、支持突条１２ａ，１２ｂの表面に摩擦係数を増大させるための粗面を形成することなどが考えられる。
In order to make the frictional force of the support protrusions 12 a and 12 b of the outer peripheral support part 12 larger than the frictional force of the seal protrusions 11 a and 11 b of the inner peripheral seal part 11, the compression rate of the outer peripheral support part 12 is higher than that of the inner peripheral seal part 11. The thickness t dimension of the inner peripheral seal portion 11 and the outer peripheral support portion 12 is increased so that the contact area of the support protrusions 12a and 12b with respect to the separators 2 and 3 is different from the contact area of the seal protrusions 11a and 11b. It is conceivable to make a difference in the width dimension of the inner peripheral seal portion 11 and the outer peripheral support portion 12 so as to be larger, or to form a rough surface for increasing the friction coefficient on the surfaces of the support protrusions 12a and 12b. It is done.
１ 燃料電池用ガスケット
１１ 内周シール部
１１ａ，１１ｂ シール突条
１２ 外周支持部
１２ａ，１２ｂ 支持突条
１３ 中間連結部
２，３セパレータ（燃料電池セル構成部品） DESCRIPTION OF SYMBOLS 1Fuel cell gasket 11 Inner- periphery seal part 11a, 11b Seal protrusion 12 Outer periphery support part 12a, 12b Support protrusion 13 Intermediate | middle connection part 2, 3 separator (fuel cell component)
１１ 内周シール部
１１ａ，１１ｂ シール突条
１２ 外周支持部
１２ａ，１２ｂ 支持突条
１３ 中間連結部
２，３セパレータ（燃料電池セル構成部品） DESCRIPTION OF SYMBOLS 1
Claims (1)
- 一対の燃料電池セル構成部品の間に介装されるガスケットであって、前記燃料電池セル構成部品と密接される厚さ方向両側に設けたシール突条からなる内周シール部と、この内周シール部の外周側にあって前記燃料電池セル構成部品と密接される厚さ方向両側に設けた支持突条からなる外周支持部と、前記内周シール部と外周支持部の間を連結する中間連結部を備えることを特徴とする燃料電池用ガスケット。 A gasket interposed between a pair of fuel cell component parts, an inner peripheral seal portion comprising seal protrusions provided on both sides in the thickness direction in close contact with the fuel cell component parts, and the inner circumference An outer peripheral support portion composed of support protrusions provided on both sides in the thickness direction, which are in close contact with the fuel battery cell component, on the outer peripheral side of the seal portion, and an intermediate connecting the inner peripheral seal portion and the outer peripheral support portion A gasket for a fuel cell comprising a connecting portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-098391 | 2014-05-12 | ||
| JP2014098391A JP2015216033A (en) | 2014-05-12 | 2014-05-12 | Gasket for fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2015174235A1 true WO2015174235A1 (en) | 2015-11-19 |
Family
ID=54479779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2015/062329 WO2015174235A1 (en) | 2014-05-12 | 2015-04-23 | Gasket for fuel cell |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2015216033A (en) |
| WO (1) | WO2015174235A1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004311254A (en) * | 2003-04-08 | 2004-11-04 | Matsushita Electric Ind Co Ltd | Gas sealing structure of fuel cell |
| JP2006107985A (en) * | 2004-10-07 | 2006-04-20 | Toyota Motor Corp | Fuel cell |
| US20070003821A1 (en) * | 2005-06-30 | 2007-01-04 | Freudenberg-Nok General Partnership | Integrally molded gasket for a fuel cell assembly |
| JP2007026847A (en) * | 2005-07-15 | 2007-02-01 | Nok Corp | Seal structure body for fuel cell and its manufacturing method |
| JP2007207707A (en) * | 2006-02-06 | 2007-08-16 | Toyota Motor Corp | Fuel cell |
| JP2007335093A (en) * | 2006-06-12 | 2007-12-27 | Nok Corp | Gasket for fuel cell |
-
2014
- 2014-05-12 JP JP2014098391A patent/JP2015216033A/en active Pending
-
2015
- 2015-04-23 WO PCT/JP2015/062329 patent/WO2015174235A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004311254A (en) * | 2003-04-08 | 2004-11-04 | Matsushita Electric Ind Co Ltd | Gas sealing structure of fuel cell |
| JP2006107985A (en) * | 2004-10-07 | 2006-04-20 | Toyota Motor Corp | Fuel cell |
| US20070003821A1 (en) * | 2005-06-30 | 2007-01-04 | Freudenberg-Nok General Partnership | Integrally molded gasket for a fuel cell assembly |
| JP2007026847A (en) * | 2005-07-15 | 2007-02-01 | Nok Corp | Seal structure body for fuel cell and its manufacturing method |
| JP2007207707A (en) * | 2006-02-06 | 2007-08-16 | Toyota Motor Corp | Fuel cell |
| JP2007335093A (en) * | 2006-06-12 | 2007-12-27 | Nok Corp | Gasket for fuel cell |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015216033A (en) | 2015-12-03 |
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