JP3369350B2 - Gas sealing method for unnecessary holes in gas supply plate for fuel cell - Google Patents

Gas sealing method for unnecessary holes in gas supply plate for fuel cell

Info

Publication number
JP3369350B2
JP3369350B2 JP05325495A JP5325495A JP3369350B2 JP 3369350 B2 JP3369350 B2 JP 3369350B2 JP 05325495 A JP05325495 A JP 05325495A JP 5325495 A JP5325495 A JP 5325495A JP 3369350 B2 JP3369350 B2 JP 3369350B2
Authority
JP
Japan
Prior art keywords
gas
gas supply
fuel cell
supply plate
adhesive
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.)
Expired - Lifetime
Application number
JP05325495A
Other languages
Japanese (ja)
Other versions
JPH08222247A (en
Inventor
浩 柳原
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.)
Tanaka Kikinzoku Kogyo KK
Original Assignee
Tanaka Kikinzoku Kogyo KK
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 Tanaka Kikinzoku Kogyo KK filed Critical Tanaka Kikinzoku Kogyo KK
Priority to JP05325495A priority Critical patent/JP3369350B2/en
Publication of JPH08222247A publication Critical patent/JPH08222247A/en
Application granted granted Critical
Publication of JP3369350B2 publication Critical patent/JP3369350B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
    • H01M8/0247—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the form
    • 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
    • H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
    • H01M8/2465—Details of groupings of fuel cells
    • H01M8/2483—Details of groupings of fuel cells characterised by internal manifolds
    • 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
    • H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
    • H01M8/0204—Non-porous and characterised by the material
    • 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
    • H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
    • H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
    • H01M8/026—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant characterised by grooves, e.g. their pitch or depth
    • 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
    • H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
    • H01M8/0276—Sealing means characterised by their form
    • 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

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Fuel Cell (AREA)

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、燃料電池用ガス供給プ
レートの不要穴のガス封止方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas sealing method for unnecessary holes in a gas supply plate for a fuel cell.

【０００２】[0002]

【従来の技術】燃料電池に於けるガス供給プレートは、
図５、６に示すように中央部ガス溝１が設けられ、外側
部にガス供給用のマニホールド２が表面より裏面に貫通
され、このマニホールド２とガス溝１とを連通する為に
側端面からマニホールド２を経てガス溝１まで丸い横穴
３を貫通している。そしてこのガス供給プレート４の側
端面からマニホールド２までの不要になった穴３ａに
は、同じ材質のカーボンの丸いピン５を打ち込んで盲栓
としていた。2. Description of the Related Art A gas supply plate in a fuel cell is
As shown in FIGS. 5 and 6, a central gas groove 1 is provided, and a gas supply manifold 2 is penetrated from the front surface to the back surface on the outer side. In order to connect the manifold 2 and the gas groove 1 from the side end surface. It passes through the round lateral hole 3 through the manifold 2 to the gas groove 1. Then, a carbon round pin 5 of the same material was driven into the unnecessary hole 3a from the side end surface of the gas supply plate 4 to the manifold 2 to form a blind plug.

【０００３】ところで、この丸い不要穴３ａに丸いピン
５の打ち込みでは、外形的に何ら目立つこともなく問題
は無いが、隙間が生じる為、燃料電池で使用するＨ2 ガ
ス、Ｏ2 ガス等が容易にリークしてしまう。By the way, when the round pin 5 is driven into the round unnecessary hole 3a, there is no problem because the outer shape is not conspicuous, but there is a gap, so that H 2 gas, O 2 gas and the like used in the fuel cell are not generated. It easily leaks.

【０００４】[0004]

【発明が解決しようとする課題】そこで本発明は、ガス
リークを完全に防止できて、シール性に優れた燃料電池
用ガス供給プレートの不要穴のガス封止方法を提供しよ
うとするものである。SUMMARY OF THE INVENTION Therefore, the present invention is intended to provide a method of sealing a gas in a unnecessary hole of a gas supply plate for a fuel cell, which can completely prevent a gas leak and has an excellent sealing property.

【０００５】[0005]

【課題を解決するための手段】上記課題を解決するため
の本発明の燃料電池用ガス供給プレートの不要穴のガス
封止方法は、中央部にガス溝が設けられ、外側部にガス
供給用のマニホールドが表面から裏面に貫通され、側端
面からガス供給用のマニホールドを経てガス溝まで横穴
を貫通した燃料電池用ガス供給プレートに於いて、側端
面からマニホールドまでの不要になった穴にねじを刻設
し、次に接着剤を充填し、次いでセットスクリューをね
じ込んでシールすることを特徴とするものである。上記
接着剤は、エポキシ系接着剤、ゴム系接着剤、アクリル
系接着剤等が好ましい。なお、同様の働きをする充填剤
でも良く、高分子材料例えばエポキシ樹脂、天然ゴム、
合成ゴム、アクリル樹脂を用いても良い。また、上記セ
ットスクリューは、ステンレス等の金属、ポーラス又は
ガス不透過のカーボン、エポキシ等の材料からなるもの
が好ましい。In order to solve the above-mentioned problems, a method of sealing gas in an unnecessary hole of a gas supply plate for a fuel cell according to the present invention is provided with a gas groove in a central portion and a gas groove in an outer portion. In the gas supply plate for the fuel cell, in which the manifold of the fuel cell penetrates from the front surface to the back surface and penetrates the lateral hole from the side end surface to the gas supply manifold to the gas groove, screw in the unnecessary hole from the side end surface to the manifold. Is engraved, then filled with an adhesive, and then a set screw is screwed in for sealing. The adhesive is preferably an epoxy adhesive, a rubber adhesive, an acrylic adhesive or the like. A filler having a similar function may be used, and a polymer material such as epoxy resin, natural rubber,
You may use synthetic rubber and acrylic resin. The set screw is preferably made of a metal such as stainless steel, a porous or gas-impermeable carbon, or an epoxy material.

【０００６】[0006]

【作用】上記のように本発明の燃料電池用ガス供給プレ
ートの不要穴のガス封止方法は、不要になった穴にねじ
を刻設し、次に接着剤を充填し、次いでセットスクリュ
ーをねじ込んでシールするのであるから、不要になった
穴の先端部は接着剤が満たされて封塞され、また接着剤
が背後からセットスクリューによりバックアップされ、
さらにねじ穴とセットスクリューの間に接着剤が入り込
んでその隙間が塞がれる。従って、不要になった穴は完
全にシールされ、ガス供給プレートを燃料電池に用いた
際、不要になった穴ではガスが確実に封止される。As described above, the method of gas sealing the unnecessary holes of the gas supply plate for a fuel cell according to the present invention is such that a screw is formed in an unnecessary hole, then an adhesive is filled, and then a set screw is used. Since it is screwed in and sealed, the tip of the unnecessary hole is filled with adhesive and sealed, and the adhesive is backed up from behind by a set screw,
Further, the adhesive enters between the screw hole and the set screw to close the gap. Therefore, the unnecessary holes are completely sealed, and when the gas supply plate is used in the fuel cell, the unnecessary holes reliably seal the gas.

【０００７】特に接着剤にエポキシ系接着剤を用いた場
合は、密着性が良いので、ねじ穴及びセットスクリュー
との密着シール性に優れる。また、弾性エポキシ系接着
剤にすると、ガス供給プレートを燃料電池に用いた際、
スタックのヒートサイクルに対して劣化を示すことがな
い。In particular, when an epoxy adhesive is used as the adhesive, the adhesiveness is good, and therefore the adhesiveness with the screw hole and the set screw is excellent. Further, when the elastic epoxy adhesive is used, when the gas supply plate is used in the fuel cell,
Does not show deterioration with heat cycle of stack.

【０００８】[0008]

【実施例】本発明の燃料電池用ガス供給プレートの不要
穴のガス封止方法の一実施例を図によって説明すると、
図１に示すように中央部に所要のパターンの幅 3.0mm、
深さ 2.0mmのガス溝１が設けられ、外側部の点対称位置
に内径10.0mmのガス供給用のマニホールド２、２が表面
から裏面に貫通され、その近傍の側端面からガス供給用
のマニホールド２、２を経てガス溝１まで内径 2.4mmの
横穴３を貫通した厚さ 8.0mm、一辺 120mmの方形の燃料
電池用ガス供給プレート４に於いて、図２に示すように
側端面からガス供給用のマニホールド２、２までの不要
になった穴３ａに深さ 8.0mmまでＭ３のねじ６を刻設
し、次に図３に示すように不要になった穴３ａにエポキ
シ系接着剤７を充填し、次いで図４に示すようにＭ３、
長さ 6.0mmのＳＵＳ製のセットスクリュー８を深さ 7.0
mmまでねじ込んでシールした。EXAMPLE An example of a method of sealing a gas in an unnecessary hole of a gas supply plate for a fuel cell according to the present invention will be described with reference to the drawings.
As shown in Fig. 1, the required pattern width is 3.0mm in the center,
A gas groove 1 having a depth of 2.0 mm is provided, and gas supply manifolds 2 and 2 having an inner diameter of 10.0 mm are penetrated from the front surface to the back surface at point symmetrical positions on the outer side, and the gas supply manifold is provided from the side end surface in the vicinity thereof. In the square gas supply plate 4 for fuel cells, which has a thickness of 8.0 mm and a side of 120 mm, which penetrates through the lateral hole 3 having an inner diameter of 2.4 mm to the gas groove 1 via 2 and 2, the gas is supplied from the side end surface as shown in FIG. M3 screws 6 up to a depth of 8.0 mm are drilled in the unnecessary holes 3a up to the manifolds 2 and 2 for epoxy, and then epoxy adhesive 7 is applied to the unnecessary holes 3a as shown in FIG. Filling, then M3, as shown in FIG.
Set the length of 6.0 mm SUS set screw 8 to a depth of 7.0
Screwed up to mm and sealed.

【０００９】このようにシールした側端面からガス供給
用のマニホールド２、２までの不要になった穴３ａの先
端部は、エポキシ系接着剤７が満たされて封塞され、ま
たエポキシ系接着剤７が背後からセットスクリュー８に
よりバックアップされ、さらにねじ６が刻設された穴３
ａとセットスクリュー８の間にエポキシ系接着剤７が入
り込んでその隙間が塞がれた。従って、不要になった穴
３ａは完全にシールされ、ガス供給プレート４を燃料電
池に用いた際、不要になった穴３ａではガスが確実に封
止された。特に接着剤にエポキシ系接着剤７を用いた本
例の場合は、密着性が良いので、ねじ６を刻設した穴３
ａ及びセットスクリュー８との密着シール性に優れ、ガ
スの加圧５kg/cm2まで全くガスリークすることが無かっ
た。また、弾性エポキシ系接着剤にすると、ガス供給プ
レート４を燃料電池に用いた際、スタックのヒートサイ
クル（20℃〜 100℃の繰り返し）に対して劣化を示すこ
とがなかった。The end portions of the unnecessary holes 3a from the side end surfaces thus sealed to the gas supply manifolds 2 and 2 are filled with the epoxy adhesive 7 to be sealed, and the epoxy adhesive is also used. 7 is backed by a set screw 8 from the back, and a hole 3 in which a screw 6 is further engraved
The epoxy adhesive 7 entered between a and the set screw 8 to close the gap. Therefore, the unnecessary hole 3a was completely sealed, and when the gas supply plate 4 was used for the fuel cell, the unnecessary hole 3a was reliably sealed with gas. In particular, in the case of this example in which the epoxy adhesive 7 is used as the adhesive, since the adhesion is good, the hole 3 with the screw 6 engraved therein
It was excellent in close contact with a and the set screw 8 and did not leak gas up to a gas pressure of 5 kg / cm 2 . Further, when the elastic epoxy adhesive was used, when the gas supply plate 4 was used in a fuel cell, it did not show deterioration with respect to the heat cycle of the stack (20 ° C. to 100 ° C. repeated).

【００１０】[0010]

【発明の効果】以上の説明で判るように本発明の燃料電
池用ガス供給プレートの不要穴のガス封止方法によれ
ば、接着剤による不要穴の封塞と、セットスクリューに
よる接着剤に対する機械的バックアップと、ねじを刻設
した穴とセットスクリューとの隙間の接着剤による封止
とにより完全にガスリークを防止でき、またヒートサイ
クルにも耐えることができる。As can be seen from the above description, according to the gas sealing method for unnecessary holes of the gas supply plate for a fuel cell of the present invention, the unnecessary holes are sealed by the adhesive and the machine for the adhesive by the set screw is used. Gas backup can be completely prevented by heat backup and sealing of the gap between the hole engraved with the screw and the set screw with an adhesive agent, and also heat cycle can be endured.

【図面の簡単な説明】[Brief description of drawings]

【図１】燃料電池用ガス供給プレートを示す図である。FIG. 1 is a view showing a gas supply plate for a fuel cell.

【図２】図１の燃料電池用ガス供給プレートの側端面か
らガス供給用のマニホールドまでの不要穴にねじを刻設
した状態を示す図である。FIG. 2 is a view showing a state in which a screw is formed in an unnecessary hole from a side end surface of the fuel cell gas supply plate of FIG. 1 to a gas supply manifold.

【図３】図２の燃料電池用ガス供給プレートの不要穴に
エポキシ系接着剤を充填した状態を示す図である。FIG. 3 is a view showing a state in which an unnecessary hole of the gas supply plate for a fuel cell of FIG. 2 is filled with an epoxy adhesive.

【図４】図３の燃料電池用ガス供給プレートの不要穴に
セットスクリューをねじ込んだ状態を示す図である。FIG. 4 is a view showing a state in which a set screw is screwed into an unnecessary hole of the fuel cell gas supply plate of FIG.

【図５】従来の燃料電池用ガス供給プレートの斜視図で
ある。FIG. 5 is a perspective view of a conventional gas supply plate for a fuel cell.

【図６】図５のＡ−Ａ線断面矢視図である。6 is a sectional view taken along the line AA of FIG.

【符号の説明】[Explanation of symbols]

１ ガス溝 ２ ガス供給用のマニホールド ３ 横穴 ３ａ 不要穴 ４ ガス供給プレート ６ ねじ ７ エポキシ系接着剤 ８ セットスクリュー 1 gas groove 2 Gas supply manifold 3 lateral holes 3a Unnecessary hole 4 gas supply plate 6 screws 7 Epoxy adhesive 8 set screws

Claims (3)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】 中央部にガス溝が設けられ、外側部にガ
ス供給用のマニホールドが表面から裏面に貫通され、側
端面からガス供給用のマニホールドを経てガス溝まで横
穴を貫通した燃料電池用ガス供給プレートに於いて、側
端面からガス供給用のマニホールドまでの不要になった
穴にねじを刻設し、次に接着剤を充填し、次いでセット
スクリューをねじ込んでシールすることを特徴とする燃
料電池用ガス供給プレートの不要穴のガス封止方法。1. A fuel cell having a gas groove in the center, a gas supply manifold penetrating from the front surface to the back surface on the outer side, and a lateral hole penetrating from the side end surface to the gas groove through the gas supply manifold. The gas supply plate is characterized in that a screw is formed in an unnecessary hole from a side end surface to a manifold for gas supply, then an adhesive is filled, and then a set screw is screwed in for sealing. A method of sealing a gas in an unnecessary hole of a gas supply plate for a fuel cell. 【請求項２】 接着剤が、エポキシ系接着剤、ゴム系接
着剤、アクリル系接着剤のいずれかであることを特徴と
する燃料電池用ガス供給プレートの不要穴のガス封止方
法。2. The method for sealing a gas in an unnecessary hole of a gas supply plate for a fuel cell, wherein the adhesive is any one of an epoxy adhesive, a rubber adhesive, and an acrylic adhesive. 【請求項３】 セットスクリューが、ステンレス等の金
属、ポーラス又はガス不透過のカーボン、エポキシ等の
材料のいずれかであることを特徴とする燃料電池用ガス
供給プレートの不要穴のガス封止方法。3. A method for sealing a gas in an unnecessary hole of a gas supply plate for a fuel cell, wherein the set screw is made of a metal such as stainless steel, a porous or gas impermeable carbon, or an epoxy material. .
JP05325495A 1995-02-17 1995-02-17 Gas sealing method for unnecessary holes in gas supply plate for fuel cell Expired - Lifetime JP3369350B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP05325495A JP3369350B2 (en) 1995-02-17 1995-02-17 Gas sealing method for unnecessary holes in gas supply plate for fuel cell

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP05325495A JP3369350B2 (en) 1995-02-17 1995-02-17 Gas sealing method for unnecessary holes in gas supply plate for fuel cell

Publications (2)

Publication Number Publication Date
JPH08222247A JPH08222247A (en) 1996-08-30
JP3369350B2 true JP3369350B2 (en) 2003-01-20

Family

ID=12937660

Family Applications (1)

Application Number Title Priority Date Filing Date
JP05325495A Expired - Lifetime JP3369350B2 (en) 1995-02-17 1995-02-17 Gas sealing method for unnecessary holes in gas supply plate for fuel cell

Country Status (1)

Country Link
JP (1) JP3369350B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6174616B1 (en) * 1998-10-07 2001-01-16 Plug Power Inc. Fuel cell assembly unit for promoting fluid service and design flexibility
FR2892234A1 (en) * 2005-10-18 2007-04-20 Conception & Dev Michelin Sa FUEL CELL WITH INTEGRATED FLUID MANAGEMENT FACILITY
CN107672621A (en) * 2017-09-25 2018-02-09 中车青岛四方车辆研究所有限公司 Gas path plate and preparation method thereof

Also Published As

Publication number Publication date
JPH08222247A (en) 1996-08-30

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