JPH05101837A - Seal structure of fuel cell - Google Patents
Seal structure of fuel cellInfo
- Publication number
- JPH05101837A JPH05101837A JP3259150A JP25915091A JPH05101837A JP H05101837 A JPH05101837 A JP H05101837A JP 3259150 A JP3259150 A JP 3259150A JP 25915091 A JP25915091 A JP 25915091A JP H05101837 A JPH05101837 A JP H05101837A
- Authority
- JP
- Japan
- Prior art keywords
- cell
- separator
- sealing
- gas diffusion
- fuel cell
- 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
Links
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
Description
【0001】[0001]
【産業上の利用分野】本発明はガス拡散電極を用いる燃
料電池のシール構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel cell seal structure using a gas diffusion electrode.
【0002】[0002]
【従来の技術】従来の高分子電解質を用いた燃料電池セ
ルは柔軟性があり、そのためシール材の弾性(伸縮性)
は必要とされていなかった。またセルをスタックにした
ときにセル端部をシールする構造のものはなかった。2. Description of the Related Art Fuel cells using conventional polymer electrolytes are flexible, and therefore, the elasticity (stretchability) of the sealing material.
Was not needed. Further, there is no structure that seals the cell edges when the cells are stacked.
【0003】[0003]
【発明が解決しようとする課題】上述したように、高分
子電解質を用いた燃料電池セル及びスタックはシール性
についての検討が殆んどなされていないので、セル自体
のガス拡散電極端面よりの、またスタックにしたときの
セルとセパレータとの間よりのガスのリークという問題
をかゝえていた。As described above, since the fuel cell and the stack using the polymer electrolyte have not been examined about the sealing property, the cell from the gas diffusion electrode end surface of the cell itself, In addition, there was a problem of gas leakage between the cell and the separator when stacking.
【0004】本発明は上記技術水準に鑑み、上述したよ
うな不具合を解消した燃料電池のシール構造を提供しよ
うとするものである。In view of the above-mentioned state of the art, the present invention is to provide a seal structure for a fuel cell which solves the above-mentioned problems.
【0005】[0005]
【課題を解決するための手段】本発明は高分子電解質及
び該電解質を挟むガス拡散電極からなる燃料電池セルに
おいて、そのセル端部のセル端面と該セル端部の上・下
面とを一体に包む形状の弾性をもつ電気絶縁性の高いシ
ール部材と、端部に前記シール部材が当接するシール面
を有するセパレータとから構成されてなることを特徴と
する燃料電池のシール構造である。The present invention relates to a fuel cell comprising a polymer electrolyte and gas diffusion electrodes sandwiching the electrolyte, and a cell end face of the cell end and upper and lower faces of the cell end are integrally formed. A seal structure for a fuel cell, comprising a seal member having a wrapping shape and having a high electric insulation property, and a separator having an end portion with a seal surface against which the seal member abuts.
【0006】[0006]
【作用】セル端面に接合されるシール材はガス拡散電極
端部からのリークを防ぎ、高分子電解質と十分に接着す
ることによってクロスリークを防ぐ。又、セル表面端部
のシール材はセパレータとの接触による変形によりシー
ル性を発揮しセルとセパレータとの間からのリークを防
ぐ。The sealing material bonded to the end surface of the cell prevents leakage from the end portion of the gas diffusion electrode and sufficiently adheres to the polymer electrolyte to prevent cross leakage. In addition, the sealing material at the end of the cell surface exhibits a sealing property due to the deformation caused by the contact with the separator and prevents leakage from between the cell and the separator.
【0007】[0007]
【実施例】以下、本発明の一実施例を添付図を参照して
詳細に説明する。図1は本発明の燃料電池セルをシール
構造とする手段の説明用概略図、図2はシール材を接合
した燃料電池セルの断面概略図、図3は燃料電池セルと
セパレータによるシール構造の断面概略図、図4はスタ
ックとした際の斜視概略図である。図において、1はガ
ス拡散電極、2は高分子電解質膜、3はセパレータ、4
はシール材、5はエンドフランジ、6はボルト、7はマ
ニホールドを示す。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a schematic view for explaining a means for forming a fuel cell of the present invention as a sealing structure, FIG. 2 is a schematic cross-sectional view of a fuel cell in which a sealing material is joined, and FIG. A schematic view and FIG. 4 are schematic perspective views of a stack. In the figure, 1 is a gas diffusion electrode, 2 is a polymer electrolyte membrane, 3 is a separator, 4
Is a seal material, 5 is an end flange, 6 is a bolt, and 7 is a manifold.
【0008】図1に示すように、ガス拡散電極1、高分
子電解質膜2、ガス拡散電極1よりなるセル端面a及び
セル上下面bに、シリコンゴム系のシーラント剤(継ぎ
目や間隙などに充填し、水密、気密の機能を果たす材料
のうち、材料がゴムであるもの)のような弾性及び電気
絶縁性をもつシール材4を図2に示すように一体に塗布
して乾燥する。このようにすることによって、ガス拡散
電極1端部からのリーク(図2の矢印)を防ぎ、かつ
高分子電解質膜2と十分に接着することによって燃料と
酸化剤とが混合するクロスリーク(図2の矢印)を防
ぐことができる。As shown in FIG. 1, a silicon rubber-based sealant (such as a seam or a gap is filled in the cell end surface a composed of the gas diffusion electrode 1, the polymer electrolyte membrane 2 and the gas diffusion electrode 1 and the cell upper and lower surfaces b). Then, as shown in FIG. 2, a sealing material 4 having elasticity and electric insulation, such as a material which is water-tight or air-tight and whose material is rubber), is integrally applied and dried. By doing so, leakage from the end of the gas diffusion electrode 1 (arrow in FIG. 2) can be prevented, and sufficient adhesion to the polymer electrolyte membrane 2 can be achieved to cross-leak the fuel and the oxidant (see FIG. 2) can be prevented.
【0009】また、燃料電池セル表面のシール材4と接
するセパレータ3の部分でシール性を必要とされる個所
(図1のc)は、燃料電池セル表面のシール材4との接
触によってシール性を保てる以上の面出し、例えばJI
S三角記号▽▽以上の仕上げを行った。このようにする
ことによって、燃料電池セル表面部のシール材4はセパ
レータ3との接触による変形によりシール性を発揮し、
燃料電池セルとセパレータ3との間からのリーク(図3
の矢印)を防ぐことができる。Further, a portion (c in FIG. 1) of the separator 3 which is in contact with the sealing material 4 on the surface of the fuel battery cell and which needs to have the sealing property is sealed by the contact with the sealing material 4 on the surface of the fuel battery cell. More than you can keep, for example JI
S Triangle symbol ▽▽ Finished above. By doing so, the sealing material 4 on the surface of the fuel cell exhibits a sealing property due to the deformation caused by the contact with the separator 3,
Leakage between the fuel cell and the separator 3 (see FIG.
Arrow) can be prevented.
【0010】そして、スタックとするとき、中間層はセ
パレータ3と燃料電池セルとを交互に配置し、燃料電池
セル上下面のシール材4をセパレータ3によって挟み、
図4に示すようにエンドフランジ5をボルト6でしめつ
けることによってスタックとした。When forming a stack, the intermediate layer has the separators 3 and the fuel cells alternately arranged, and the sealing materials 4 on the upper and lower surfaces of the fuel cells are sandwiched by the separators 3.
As shown in FIG. 4, the end flange 5 was tightened with a bolt 6 to form a stack.
【0011】[0011]
【発明の効果】シール材を多種類使用することなく、ま
たスタック組み立て時に乾いていない状態のシーラント
剤や接着剤を用いてセパレータと燃料電池セルを接合す
る必要がなく、作業能率が向上する。EFFECTS OF THE INVENTION It is not necessary to use many kinds of sealing materials, and it is not necessary to join the separator and the fuel battery cell with a sealant or an adhesive which is not dried at the time of stack assembly, so that the working efficiency is improved.
【0012】またシール材が弾性をもつため、柔軟性を
もつ燃料電池セル(例えば電解質に高分子膜を用いたも
の)でも剥離したりせずシール性が保たれる。Further, since the sealing material has elasticity, even a fuel cell having flexibility (for example, one using a polymer film as an electrolyte) does not peel off and the sealing property is maintained.
【0013】さらに、相対するガス拡散電極を完全に絶
縁するため、セル端部からの漏えい電流もなくなりセル
性能が向上する。これは小面積セルで特に有効である。Further, since the gas diffusion electrodes facing each other are completely insulated, the leakage current from the cell end is eliminated and the cell performance is improved. This is especially effective for small area cells.
【図1】本発明の燃料電池セルをシール構造とする手段
の説明用概略図FIG. 1 is a schematic diagram for explaining a means for making a fuel cell of the present invention a sealing structure.
【図2】シール材を接合した燃料電池セルの断面概略図FIG. 2 is a schematic sectional view of a fuel cell unit in which a sealing material is joined.
【図3】燃料電池セルとセパレータによるシール構造の
断面概略図FIG. 3 is a schematic cross-sectional view of a seal structure including a fuel cell and a separator.
【図4】スタックとした際の斜視概略図FIG. 4 is a schematic perspective view of a stack.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 末田 穰 広島市西区観音新町四丁目6番22号 三菱 重工業株式会社広島研究所内 (72)発明者 平田 勇夫 広島市西区観音新町四丁目6番22号 三菱 重工業株式会社広島研究所内 (72)発明者 内田 聡 長崎市飽の浦町1番1号 三菱重工業株式 会社長崎造船所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inspector Sou Sada 4-6-22 Kannon Shinmachi, Nishi-ku, Hiroshima City Mitsubishi Heavy Industries Ltd. Hiroshima Research Institute (72) Inventor Yuuo Hirata 4-22 Kannon Shinmachi, Nishi-ku, Hiroshima (72) Inventor Satoshi Uchida 1-1, Atsunoura-machi, Nagasaki-shi Mitsubishi Heavy Industries Ltd. Nagasaki Shipyard Co., Ltd.
Claims (1)
散電極からなる燃料電池セルにおいて、そのセル端部の
セル端面と該セル端部の上・下面とを一体に包む形状の
弾性をもつ電気絶縁性の高いシール部材と、端部に前記
シール部材が当接するシール面を有するセパレータとか
ら構成されてなることを特徴とする燃料電池のシール構
造。1. A fuel cell comprising a polymer electrolyte and a gas diffusion electrode sandwiching the electrolyte, and an electric cell having elasticity such that a cell end surface of the cell end and upper and lower surfaces of the cell end are integrally wrapped. A seal structure for a fuel cell, comprising a seal member having a high insulating property, and a separator having a seal surface at an end portion with which the seal member abuts.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3259150A JPH05101837A (en) | 1991-10-07 | 1991-10-07 | Seal structure of fuel cell |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3259150A JPH05101837A (en) | 1991-10-07 | 1991-10-07 | Seal structure of fuel cell |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH05101837A true JPH05101837A (en) | 1993-04-23 |
Family
ID=17330034
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3259150A Pending JPH05101837A (en) | 1991-10-07 | 1991-10-07 | Seal structure of fuel cell |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH05101837A (en) |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995003638A1 (en) * | 1993-07-20 | 1995-02-02 | Bossel Ulf Dr | Process and device for reducing energy losses of electrochemical cells due to leakage currents |
WO1998050973A1 (en) * | 1997-05-01 | 1998-11-12 | Ballard Power Systems Inc. | Polymer electrolyte membrane fuel cell with fluid distribution layer having integral sealing capability |
EP0933826A1 (en) * | 1998-02-03 | 1999-08-04 | Matsushita Electric Industrial Co., Ltd. | Polymer electrolyte membrane fuel cell and seal assembly therefor |
WO2000010215A1 (en) * | 1998-08-10 | 2000-02-24 | Axiva Gmbh | Fuel cell with improved long-term performance, method for operating a pme fuel cell and pme fuel cell battery |
EP1032065A2 (en) * | 1999-02-27 | 2000-08-30 | Firma Carl Freudenberg | Sealing arrangement for thin large area parts |
JP2001510932A (en) * | 1997-07-16 | 2001-08-07 | バラード パワー システムズ インコーポレイティド | Elastic seal for a membrane electrode assembly (MEA) in an electrochemical fuel cell and method of making the seal |
WO2002043172A1 (en) | 2000-11-21 | 2002-05-30 | Nok Corporation | Constituent part for fuel cell |
US6423439B1 (en) | 1997-07-16 | 2002-07-23 | Ballard Power Systems Inc. | Membrane electrode assembly for an electrochemical fuel cell |
JP2002528862A (en) * | 1998-10-21 | 2002-09-03 | インターナショナル フュエル セルズ,エルエルシー | Fuel cell with seal between individual membrane assembly and plate assembly |
EP1286408A2 (en) * | 2001-08-16 | 2003-02-26 | Asia Pacific Fuel Cell Technologies, Ltd. | Modular single cell and assembled cell stack of a proton exchange membrane fuel cell |
JP2006114227A (en) * | 2004-10-12 | 2006-04-27 | Nok Corp | Sealing structure of fuel battery cell |
KR100647566B1 (en) * | 1999-11-17 | 2006-11-17 | 삼성에스디아이 주식회사 | Lithium Polymer battery and method for manufacturing the same |
US7425383B2 (en) | 2001-10-31 | 2008-09-16 | Hitachi, Ltd. | Electrode for polymer electrolyte fuel cell, separator therefore, and polymer electrolyte fuel cell, and generating system using them |
JP2012238556A (en) * | 2011-05-13 | 2012-12-06 | Nissan Motor Co Ltd | Fuel cell |
WO2013075032A1 (en) | 2011-11-18 | 2013-05-23 | SOCIéTé BIC | Perimeter coupling for planar fuel cell and related methods |
US9484581B2 (en) | 2005-06-30 | 2016-11-01 | Freudenberg-Nok General Partnership | Integrally molded gasket for a fuel cell assembly |
-
1991
- 1991-10-07 JP JP3259150A patent/JPH05101837A/en active Pending
Cited By (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995003638A1 (en) * | 1993-07-20 | 1995-02-02 | Bossel Ulf Dr | Process and device for reducing energy losses of electrochemical cells due to leakage currents |
WO1998050973A1 (en) * | 1997-05-01 | 1998-11-12 | Ballard Power Systems Inc. | Polymer electrolyte membrane fuel cell with fluid distribution layer having integral sealing capability |
US5976726A (en) * | 1997-05-01 | 1999-11-02 | Ballard Power Systems Inc. | Electrochemical cell with fluid distribution layer having integral sealing capability |
US6974647B2 (en) | 1997-05-01 | 2005-12-13 | Ballard Power Systems Inc. | Fuel cell fluid distribution layer having integral sealing capability |
US6350538B1 (en) | 1997-05-01 | 2002-02-26 | Ballard Power Systems Inc. | Fuel cell with fluid distribution layer having intergral sealing capability |
US6423439B1 (en) | 1997-07-16 | 2002-07-23 | Ballard Power Systems Inc. | Membrane electrode assembly for an electrochemical fuel cell |
JP2001510932A (en) * | 1997-07-16 | 2001-08-07 | バラード パワー システムズ インコーポレイティド | Elastic seal for a membrane electrode assembly (MEA) in an electrochemical fuel cell and method of making the seal |
EP0933826A1 (en) * | 1998-02-03 | 1999-08-04 | Matsushita Electric Industrial Co., Ltd. | Polymer electrolyte membrane fuel cell and seal assembly therefor |
US6316139B1 (en) | 1998-02-03 | 2001-11-13 | Matsushita Electric Industrial Co., Ltd. | Fuel cell having a gasket with an adhesive layer |
WO2000010215A1 (en) * | 1998-08-10 | 2000-02-24 | Axiva Gmbh | Fuel cell with improved long-term performance, method for operating a pme fuel cell and pme fuel cell battery |
US6852440B1 (en) | 1998-08-10 | 2005-02-08 | Axiva Gmbh | Fuel cell with improved long term performance, method for operating a PME fuel cell and PME fuel cell battery |
JP2002528862A (en) * | 1998-10-21 | 2002-09-03 | インターナショナル フュエル セルズ,エルエルシー | Fuel cell with seal between individual membrane assembly and plate assembly |
EP1032065A3 (en) * | 1999-02-27 | 2004-03-24 | Carl Freudenberg KG | Sealing arrangement for thin large area parts |
EP1032065A2 (en) * | 1999-02-27 | 2000-08-30 | Firma Carl Freudenberg | Sealing arrangement for thin large area parts |
KR100647566B1 (en) * | 1999-11-17 | 2006-11-17 | 삼성에스디아이 주식회사 | Lithium Polymer battery and method for manufacturing the same |
WO2002043172A1 (en) | 2000-11-21 | 2002-05-30 | Nok Corporation | Constituent part for fuel cell |
US7226685B2 (en) | 2000-11-21 | 2007-06-05 | Nok Corporation | Constituent part for fuel cell |
AU2001260606B2 (en) * | 2000-11-21 | 2006-10-19 | Nok Corporation | Constituent part for fuel cell |
EP1286408A3 (en) * | 2001-08-16 | 2004-12-01 | Asia Pacific Fuel Cell Technologies, Ltd. | Modular single cell and assembled cell stack of a proton exchange membrane fuel cell |
EP1286408A2 (en) * | 2001-08-16 | 2003-02-26 | Asia Pacific Fuel Cell Technologies, Ltd. | Modular single cell and assembled cell stack of a proton exchange membrane fuel cell |
US7425383B2 (en) | 2001-10-31 | 2008-09-16 | Hitachi, Ltd. | Electrode for polymer electrolyte fuel cell, separator therefore, and polymer electrolyte fuel cell, and generating system using them |
US7659028B2 (en) | 2001-10-31 | 2010-02-09 | Hitachi, Ltd. | Polymer electrolyte fuel cell |
JP2006114227A (en) * | 2004-10-12 | 2006-04-27 | Nok Corp | Sealing structure of fuel battery cell |
US9484581B2 (en) | 2005-06-30 | 2016-11-01 | Freudenberg-Nok General Partnership | Integrally molded gasket for a fuel cell assembly |
JP2012238556A (en) * | 2011-05-13 | 2012-12-06 | Nissan Motor Co Ltd | Fuel cell |
WO2013075032A1 (en) | 2011-11-18 | 2013-05-23 | SOCIéTé BIC | Perimeter coupling for planar fuel cell and related methods |
CN104054192A (en) * | 2011-11-18 | 2014-09-17 | 法商Bic公司 | Perimeter coupling for planar fuel cell and related methods |
EP2783403A4 (en) * | 2011-11-18 | 2015-06-24 | Perimeter coupling for planar fuel cell and related methods | |
US9614230B2 (en) | 2011-11-18 | 2017-04-04 | Intelligent Energy Limited | Perimeter coupling for planar fuel cell and related methods |
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Legal Events
Date | Code | Title | Description |
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A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 19990928 |