JPS62271355A - Sealing structure of fuel cell - Google Patents
Sealing structure of fuel cellInfo
- Publication number
- JPS62271355A JPS62271355A JP61112751A JP11275186A JPS62271355A JP S62271355 A JPS62271355 A JP S62271355A JP 61112751 A JP61112751 A JP 61112751A JP 11275186 A JP11275186 A JP 11275186A JP S62271355 A JPS62271355 A JP S62271355A
- Authority
- JP
- Japan
- Prior art keywords
- gasket
- guide grooves
- fuel cell
- separator
- grooves
- 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
- 239000000446 fuel Substances 0.000 title claims description 12
- 238000007789 sealing Methods 0.000 title claims description 7
- 239000003792 electrolyte Substances 0.000 claims abstract description 13
- 239000011159 matrix material Substances 0.000 claims description 5
- 239000007789 gas Substances 0.000 abstract description 9
- 239000001257 hydrogen Substances 0.000 abstract description 8
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 7
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- -1 polytetrafluoroethylene Polymers 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
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
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/241—Grouping of fuel cells, e.g. stacking of fuel cells with solid or matrix-supported electrolytes
- H01M8/242—Grouping of fuel cells, e.g. stacking of fuel cells with solid or matrix-supported electrolytes comprising framed electrodes or intermediary frame-like gaskets
-
- 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
-
- 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
- H01M8/2457—Grouping of fuel cells, e.g. stacking of fuel cells with both reactants being gaseous or vaporised
-
- 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
- H01M8/0267—Collectors; Separators, e.g. bipolar separators; Interconnectors having heating or cooling means, e.g. heaters or coolant flow channels
-
- 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
Abstract
Description
【発明の詳細な説明】
３、発明の詳細な説明
〔発明の技術分野〕
本発明は燃料電池の電池セル側部からのガス漏れや液漏
れを確実に防止するシール構造に関するものである。Detailed Description of the Invention 3. Detailed Description of the Invention [Technical Field of the Invention] The present invention relates to a seal structure that reliably prevents gas leakage and liquid leakage from the side portions of fuel cells.
燃料電池は、陽極板と陰極板の間にリン酸等の電解液を
含浸した電解質マトリックスを挟んで構成した電池セル
を複数層に積層し、各電池セルの陰極板側に水素を供給
すると共に、陽極板側に空気（酸素）を供給して両者を
反応させ、水と電気エネルギを発生させるような発電機
構になっている。上述のように電池セルを多段に積層す
る場合、電池セルの周囲にはシール用のガスケットが配
置され、側縁から電解液や空気。A fuel cell is constructed by stacking multiple layers of battery cells, each consisting of an electrolyte matrix impregnated with an electrolyte such as phosphoric acid, sandwiched between an anode plate and a cathode plate. Hydrogen is supplied to the cathode side of each battery cell, and the anode The power generation mechanism is such that air (oxygen) is supplied to the plate side and the two react to generate water and electrical energy. When battery cells are stacked in multiple stages as described above, a sealing gasket is placed around the battery cells to prevent electrolyte and air from flowing from the side edges.
水素等のガスが漏れないように処置されている。Measures are taken to prevent gases such as hydrogen from leaking.
ところが、従来の燃料電池では、多段に積層した電池セ
ルの積層体を上下から締付けるとき、ガスケットが面方
向に横ずれして逃げる傾向があり、このガスケットの逃
げによって電解液やガス漏れに対するシール効果が不十
分になるという欠点があった。However, in conventional fuel cells, when a stack of battery cells stacked in multiple stages is tightened from above and below, the gasket tends to slip horizontally and escape, and this escape of the gasket reduces the sealing effect against electrolyte and gas leaks. It had the disadvantage of being insufficient.
本発明の目的は、電池セルの側縁から漏れる電解液やガ
スを確実にシールすることができる燃料電池のシール構
造を提供することにある。An object of the present invention is to provide a seal structure for a fuel cell that can reliably seal electrolyte and gas leaking from the side edges of a battery cell.
上記目的を達成する本発明のシール構造は、陽極板と陰
極板の間に電解質マトリックスを挟んで構成した電池セ
ルの周囲にシール用のガスケットを配置し、この電池セ
ルの複数個をセパレータを介在させて多段に積層した燃
料電池において、前記セパレータの縁部表面に保合凸部
Ｃ−Ｕ成し、この係合凸部の内側面に前記ガスケア・ト
の外周面を係合させた状態で締付固定したことを特徴と
するものである。The sealing structure of the present invention that achieves the above object includes a sealing gasket placed around a battery cell constructed by sandwiching an electrolyte matrix between an anode plate and a cathode plate, and a plurality of these battery cells interposed with a separator. In a fuel cell stacked in multiple stages, a retaining convex portion C-U is formed on the edge surface of the separator, and the outer circumferential surface of the gas care plate is engaged with the inner surface of this engaging convex portion when tightened. It is characterized by being fixed.
り実施例］
第１図において、１は電池セルであり、陽極板２と陰極
板３との間に、リン酸等の電解液を含浸した板状の電解
質マトリックス４を挟むことにより構成されている。こ
のような電池セル１の周囲にはポリテトラフルオロエチ
レン、弗素系ゴムなどの耐熱性、耐蝕性に優れた材料か
らなるシール用のガスケット９が配置され、この状態で
複数個の電池セル１がセパレータ５を介して多段に積層
されている。さらにこの積層体１０の両端にそれぞれ集
電板６，６が配置され、さらにポリテトラフルオロエチ
レン、弗素系ゴム等からなる絶縁板７．７を介して端板
８゜８が当てられ、その状態で図示しない締付具によっ
て一体に締付固定され、燃料電池本体を構成するように
なっている。上記集電板６には電気を取り出すための集
電端子６ａが設けられ、この集電端子６ａは締付固定時
に絶縁板７および端板８ここ設けた孔７ａ、８ａを貫通
して外側に突出するようになっている。Example] In FIG. 1, 1 is a battery cell, which is constructed by sandwiching a plate-shaped electrolyte matrix 4 impregnated with an electrolyte such as phosphoric acid between an anode plate 2 and a cathode plate 3. There is. A sealing gasket 9 made of a material with excellent heat resistance and corrosion resistance, such as polytetrafluoroethylene or fluorine rubber, is arranged around the battery cells 1, and in this state, a plurality of battery cells 1 are connected. They are stacked in multiple stages with separators 5 in between. Further, current collector plates 6, 6 are arranged at both ends of this laminate 10, and end plates 8.8 are applied via insulating plates 7.7 made of polytetrafluoroethylene, fluorine rubber, etc. They are tightened and fixed together with a fastener (not shown) to form a fuel cell main body. The current collector plate 6 is provided with a current collector terminal 6a for taking out electricity, and when the current collector terminal 6a is tightened and fixed, it passes through the holes 7a and 8a provided in the insulating plate 7 and the end plate 8, and extends outward. It's starting to stand out.
セパレータ５は陽極板２に対面する側に多数の案内：偉
５ａ、−・−５ａを有し、また陰極板３に対面する側に
は多数の案内溝５ ｂ 、−−−−ｍ−５ｂを有し、両
案内溝５ａと５ｂとは互いに直交する関係になっている
。ただし、このセパレータのうち、最外側に配置したセ
パレータは片面だけに案内４５ａまたは５ｂを有してい
る。また、これらセパレータ５のうちには、必要により
厚さ方向の中間部に冷却流体を通過させる通路を設けた
ものを配置するようにしてもよい。The separator 5 has a large number of guide grooves 5a, -5a on the side facing the anode plate 2, and a large number of guide grooves 5b, -5b on the side facing the cathode plate 3. The guide grooves 5a and 5b are perpendicular to each other. However, among these separators, the outermost separator has a guide 45a or 5b on only one side. Moreover, among these separators 5, one may be provided with a passage for the cooling fluid to pass through in the middle part in the thickness direction, if necessary.
また、セパレーク５は案内溝５ａが存在する側の面５つ
両端部には、それぞれこの案内溝５ａと平行な係合凸部
１０ａ、１０ａが設けられ、また案内溝５ａと直交する
関係の案内溝５ｂが存在する反対側の面の両端部にも、
それぞれその案内１Ｊｔ５ｂと平行にした係合凸部１０
ｂ、１０ｂが設けられている。これら係合凸部１０ａと
１０ｂは、電池セル積層体を締付固定するとき、その内
側面を第２図に示すようにガスケット９の外周面に係合
させた状態にし、それによってガスケット９が面方向の
左右および前後方向のいずれにも横ずれして逃げること
がないようにしである。Further, the separate rake 5 is provided with engagement protrusions 10a, 10a parallel to the guide groove 5a at both ends of the five faces on the side where the guide groove 5a exists, and guide grooves 10a, 10a in a relationship perpendicular to the guide groove 5a. Also at both ends of the opposite surface where the groove 5b is present,
Engagement protrusions 10 parallel to the respective guides 1Jt5b
b, 10b are provided. When the battery cell stack is tightened and fixed, these engaging protrusions 10a and 10b engage the inner surface of the gasket 9 with the outer peripheral surface of the gasket 9 as shown in FIG. This is to prevent it from slipping laterally in both the left and right directions as well as in the front and rear directions.
上述したセパレータ５の案内ｉ５ａ、５ｂには、陰極板
２側に対面する案内溝５ａには酸素（空気）が供給され
、また陰極板３に対面する互内溝５ｂには水素が供給さ
れる。それぞれに供給されたガスは電解質マトリックス
４の電解液によって分解され、酸素は陽極板２から電子
をとりだして酸素イオンになり、また水素は陰極板３に
電子を放出して水素イオンになり、この両イオンが結合
して水になる反応を行い、この反応により水と電気エネ
ルギとを゛発生するようになっている。In the guides i5a and 5b of the separator 5 described above, oxygen (air) is supplied to the guide groove 5a facing the cathode plate 2 side, and hydrogen is supplied to the mutual groove 5b facing the cathode plate 3. . The gases supplied to each are decomposed by the electrolyte in the electrolyte matrix 4, oxygen takes out electrons from the anode plate 2 and becomes oxygen ions, and hydrogen releases electrons to the cathode plate 3 and becomes hydrogen ions. Both ions combine to form water, and this reaction generates water and electrical energy.
さて、上述した燃料電池では、セパレータ５の端部表面
に係合凸部１０ａ、ｌＯｂが形成され、この係合凸部１
０ａ、１０ｂの内側面がガスケット９の外周面に係合さ
せられた状態で、電池セル積石体が締付固定されるよう
になっているため、ガスケット９の面方向への横ずれは
発生しない。したがって、ガスケット９は所定の位置を
維持し、電解液あるいは空気、水素等のガスを確実にシ
ールすることができる。Now, in the above-mentioned fuel cell, the engaging protrusions 10a and lOb are formed on the end surface of the separator 5, and the engaging protrusions 1
Since the battery cell stack is tightened and fixed with the inner surfaces of 0a and 10b engaged with the outer peripheral surface of the gasket 9, lateral displacement in the plane direction of the gasket 9 does not occur. . Therefore, the gasket 9 can maintain a predetermined position and reliably seal the electrolytic solution or gas such as air or hydrogen.
上述したように本発明は、多段に積層した電池セルの間
に介在させたセパレータの縁部表面に保合凸部を形成し
、この保合凸部の内側面を電池セルの周囲に配置したガ
スケットの外周面に係合させた状態で締付固定する構成
にしたので、ガスケットが面方向への横ずれを発生する
ことがない。したがって、ガスケットを確実に所定の位
置に保持することができ、それによって電解液や空気、
水素等のガスを確実にシールすることができる。As described above, in the present invention, a retaining convex portion is formed on the edge surface of a separator interposed between battery cells stacked in multiple stages, and the inner surface of this retaining convex portion is arranged around the battery cells. Since the gasket is configured to be tightened and fixed while being engaged with the outer circumferential surface of the gasket, the gasket does not shift laterally in the surface direction. Therefore, the gasket can be reliably held in place, thereby preventing electrolyte or air
Gases such as hydrogen can be reliably sealed.
第１図は本発明の実施例からなるシール構造を有する燃
料電池を、各部材を一体に締付固定する前の分解状態で
示す斜視図、第２図は同燃料電池における電池セルの側
縁部のシール構造を締付前の状態で示す断面図である。
１・・・電池セル、 ５・・・セパレータ、 ５ａ
。
５ｂ・・・案内溝、 ９・・・ガケスット、 １０
ａ。
ｔｏｂ・・・係合凸部。FIG. 1 is a perspective view showing a fuel cell having a seal structure according to an embodiment of the present invention in an exploded state before each member is tightened and fixed together, and FIG. 2 is a side edge of a battery cell in the same fuel cell. FIG. 3 is a cross-sectional view showing the seal structure of the section before tightening. 1...Battery cell, 5...Separator, 5a
. 5b...Guide groove, 9...Bake slot, 10
a. tob...engaging protrusion.
Claims (1)
した電池セルの周囲にシール用のガスケットを配置し、
この電池セルの複数個をセパレータを介在させて多段に
積層した燃料電池において、前記セパレータの縁部表面
に係合凸部を形成し、この係合凸部の内側面に前記ガス
ケットの外周面を係合させた状態で締付固定したことを
特徴とする燃料電池のシール構造。A sealing gasket is placed around the battery cell, which consists of an electrolyte matrix sandwiched between the anode and cathode plates.
In a fuel cell in which a plurality of these battery cells are stacked in multiple stages with separators interposed therebetween, an engaging protrusion is formed on the edge surface of the separator, and the outer circumferential surface of the gasket is formed on the inner surface of the engaging protrusion. A fuel cell seal structure characterized by being tightened and fixed in an engaged state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61112751A JPS62271355A (en) | 1986-05-19 | 1986-05-19 | Sealing structure of fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61112751A JPS62271355A (en) | 1986-05-19 | 1986-05-19 | Sealing structure of fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62271355A true JPS62271355A (en) | 1987-11-25 |
Family
ID=14594640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61112751A Pending JPS62271355A (en) | 1986-05-19 | 1986-05-19 | Sealing structure of fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62271355A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112421068A (en) * | 2020-10-19 | 2021-02-26 | 国科微城市智能科技(南京)有限责任公司 | Manufacturing equipment for hydrogen fuel cell and operation method |
-
1986
- 1986-05-19 JP JP61112751A patent/JPS62271355A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112421068A (en) * | 2020-10-19 | 2021-02-26 | 国科微城市智能科技(南京)有限责任公司 | Manufacturing equipment for hydrogen fuel cell and operation method |
| CN112421068B (en) * | 2020-10-19 | 2021-11-30 | 国科微城市智能科技(南京)有限责任公司 | Manufacturing equipment for hydrogen fuel cell and operation method |
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