JP3072033B2 - Manufacturing method of fuel cell separator - Google Patents
Manufacturing method of fuel cell separatorInfo
- Publication number
- JP3072033B2 JP3072033B2 JP7218866A JP21886695A JP3072033B2 JP 3072033 B2 JP3072033 B2 JP 3072033B2 JP 7218866 A JP7218866 A JP 7218866A JP 21886695 A JP21886695 A JP 21886695A JP 3072033 B2 JP3072033 B2 JP 3072033B2
- Authority
- JP
- Japan
- Prior art keywords
- plate
- steel plate
- manufacturing
- stainless steel
- separator
- 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 - Fee Related
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
- H01M8/0204—Non-porous and characterised by the material
- H01M8/0206—Metals or alloys
- H01M8/0208—Alloys
- H01M8/021—Alloys based on iron
-
- 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
- H01M8/0223—Composites
- H01M8/0228—Composites in the form of layered or coated products
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、溶融炭酸塩型燃料
電池に用いられるセパレータのセンタープレートの成形
方法に関する。The present invention relates to a method for forming a center plate of a separator used in a molten carbonate fuel cell.
【０００２】[0002]
【従来の技術】溶融炭酸塩型燃料電池は、高効率で環境
への影響が少ないなど、従来の発電装置にない特徴を有
しており、水力、火力、原子力に続く発電システムとし
て注目を集め、現在鋭意研究が進められている。2. Description of the Related Art Molten carbonate fuel cells have features not found in conventional power generators, such as high efficiency and low environmental impact, and have attracted attention as power generation systems following hydro, thermal and nuclear power. Currently, intensive research is underway.
【０００３】溶融炭酸塩型燃料電池は単セルでは低電圧
（０．８Ｖ程度）であるため、実用上はセパレータ（バ
イポーラプレート）を介して多段数に積層した電池を用
いる。この積層電池をスタックと呼ぶ。図２は積層電池
の構成を示す。１は単セルを示す。単セル１は中心に電
解質板２を設け、一方の面にカソード３（空気極）、他
方の面にアノード４（燃料極）を配置し、セパレータ５
によりカソード３には酸素を含むカソードガス６を供給
し、アノード４には水素を含むアノードガス７を供給す
るように構成される。これをセパレータ５を中心にして
考えると、一方の面にカソード３が設けられ、他方の面
にアノード４が設けられ、カソード３にはカソードガス
６を、アノード４にはアノードガス７をそれぞれ分離し
て供給する。セパレータ５の主要構造はカソードガス６
とアノードガス７を分離するとともにカソード３とアノ
ード４を支持する波形や矩形波形のセンタープレート８
からなる。[0003] Since a molten carbonate fuel cell has a low voltage (about 0.8 V) in a single cell, a battery stacked in multiple stages via a separator (bipolar plate) is practically used. This stacked battery is called a stack. FIG. 2 shows the configuration of the stacked battery. 1 indicates a single cell. The unit cell 1 is provided with an electrolyte plate 2 at the center, a cathode 3 (air electrode) on one surface, an anode 4 (fuel electrode) on the other surface, and a separator 5.
Thus, a cathode gas 6 containing oxygen is supplied to the cathode 3 and an anode gas 7 containing hydrogen is supplied to the anode 4. Considering this with the separator 5 as the center, the cathode 3 is provided on one surface, the anode 4 is provided on the other surface, the cathode gas 6 is separated from the cathode 3, and the anode gas 7 is separated from the anode 4. Supply. The main structure of the separator 5 is a cathode gas 6
And anode gas 7 and a center plate 8 having a corrugated or rectangular waveform supporting the cathode 3 and the anode 4.
Consists of
【０００４】スタックは電解質板２を介してセパレータ
５を多段に積層することにより構成されるので、セパレ
ータ５は溶融炭酸塩型燃料電池の製作費のうち大きなウ
エイトを占める。セパレータ５を多量に製作する場合、
センタープレート８の製作方法として薄板構造のプレス
成形方法が低コスト化に最も有望である。センタープレ
ート８は耐蝕性の見地よりアノードガス７に接する面は
ニッケル鋼板としカソードガス６に接する面はステンレ
ス鋼板を使用する必要がある。このためニッケル鋼板と
ステンレス鋼板を圧接したクラッド鋼が用いられてい
る。[0004] Since the stack is formed by stacking the separators 5 in multiple stages with the electrolyte plate 2 interposed therebetween, the separators 5 occupy a large part of the production cost of the molten carbonate fuel cell. When a large number of separators 5 are manufactured,
As a manufacturing method of the center plate 8, a press forming method of a thin plate structure is most promising for cost reduction. From the viewpoint of corrosion resistance, the center plate 8 needs to use a nickel steel plate on the surface in contact with the anode gas 7 and use a stainless steel plate on the surface in contact with the cathode gas 6. For this reason, a clad steel in which a nickel steel plate and a stainless steel plate are pressed against each other is used.
【０００５】図３はクラッド鋼を金型でプレスしてセン
タープレートを成形する方法を示す図である。クラッド
鋼１０はニッケル鋼板１０ａとステンレス鋼板１０ｂと
を圧接とか爆着等により接合したものであり、例えばニ
ッケル鋼板０．１ｍｍ、ステンレス鋼板０．５ｍｍの厚
みのものが用いられる。このクラッド鋼１０の上面に上
金型１１ａ、下面に下金型１１ｂを当て押圧することに
よりセンタープレート８のプレス成形がなされる。FIG. 3 is a view showing a method of pressing a clad steel with a mold to form a center plate. The clad steel 10 is formed by joining a nickel steel plate 10a and a stainless steel plate 10b by pressure welding or explosion, and has a thickness of, for example, 0.1 mm for a nickel steel plate and 0.5 mm for a stainless steel plate. The upper plate 11a is pressed against the upper surface of the clad steel 10 and the lower die 11b is pressed against the lower surface, and the center plate 8 is press-formed.
【０００６】[0006]
【発明が解決しようとする課題】クラッド鋼は製作過程
が複雑なこともあり、かなり高価な材料であるためセパ
レータ５の製作コストを大きく上昇させている。また、
クラッド鋼は製作設備の関係から製作寸法に制限があ
り、電池容量が大きくなりセンタープレート８を大きく
しようとすると、クラッド鋼の製造設備まで拡大する必
要も生じる。ステンレス鋼板にニッケル鋼板をクラッド
する場合ニッケル鋼の厚みはクラッド鋼の１０％から２
０％以下に制限される。このため、例えばニッケル鋼板
０．１ｍｍ、ステンレス鋼板０．３ｍｍの場合ニッケル
鋼はクラッド鋼の２５％の厚みとなり、このようなニッ
ケル鋼板とステンレス鋼板の厚みの組み合わせでクラッ
ド鋼を得ることはできなかった。The manufacturing process of the clad steel is complicated, and the manufacturing cost of the separator 5 is greatly increased because it is a rather expensive material. Also,
The production dimensions of the clad steel are limited due to the production equipment. If the battery capacity is increased and the center plate 8 is to be enlarged, it is necessary to expand the production capacity to the production equipment for the clad steel. When clad a nickel steel plate on a stainless steel plate, the thickness of the nickel steel should be 10% to 2% of the clad steel.
It is limited to 0% or less. Therefore, for example, when the nickel steel sheet is 0.1 mm and the stainless steel sheet is 0.3 mm, the nickel steel has a thickness of 25% of the clad steel, and it is not possible to obtain the clad steel by the combination of the thicknesses of the nickel steel sheet and the stainless steel sheet. Was.
【０００７】本発明は上述の問題に鑑みてなされたもの
で、ニッケル鋼板とステンレス鋼板とを重ねて金型でプ
レスすることにより、セパレータのセンタープレートを
成形する方法を提供することを目的とする。The present invention has been made in view of the above problems, and has as its object to provide a method of forming a center plate of a separator by stacking a nickel steel plate and a stainless steel plate and pressing them with a mold. .
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するた
め、請求項１の発明では、アノードガスとカソードガス
を分離するセンタープレートを有するセパレータの製作
方法において、前記センタープレートをニッケル鋼板と
ステンレス鋼板を重ね合わせ両面から金型を押圧して成
形する。According to a first aspect of the present invention, there is provided a method of manufacturing a separator having a center plate for separating anode gas and cathode gas, wherein the center plate is formed of a nickel steel plate and a stainless steel plate. And press the mold from both sides to form.
【０００９】これによりニッケル鋼板とステンレス鋼板
との接合とセンタープレートとしての成形を同時に行う
ことができ、クラッド鋼を使用しないので、センタープ
レートの材料費が低減され、大きさやニッケル鋼板とス
テンレス鋼板との厚みの割合に対する制限もなくなる。[0009] Thus, the joining of the nickel steel sheet and the stainless steel sheet and the forming as the center plate can be performed at the same time, and since the clad steel is not used, the material cost of the center plate is reduced. There is no limit on the percentage of the thickness.
【００１０】請求項２の発明では、前記ニッケル鋼板と
前記ステンレス鋼板との重ね合わせ面を粗に加工した後
金型を押圧する。これにより両鋼板の接着の確実性が増
加する。In the invention according to claim 2, the die is pressed after the superposed surface of the nickel steel plate and the stainless steel plate is roughened. This increases the certainty of bonding between the two steel plates.
【００１１】[0011]
【発明の実施の形態】以下、本発明の実施の形態につい
て図面を参照して説明する。図１はセパレータ５を構成
するセンタープレート８の成形方法を示す図である。本
図において図２、図３と同一機能を有するものは同一符
号で表す。ニッケル鋼板１０ａとステンレス鋼板１０ｂ
を重ね合わせ、上金型１１ａと下金型１１ｂの間に挟み
押圧する。ニッケル鋼板１０ａとステンレス鋼板１０ｂ
との接合面はグラインダー等により肌を荒くしておき、
密着性をよくする。なお接着剤等を用いてもよい。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a method of forming the center plate 8 constituting the separator 5. In this figure, those having the same functions as those in FIGS. 2 and 3 are denoted by the same reference numerals. Nickel steel plate 10a and stainless steel plate 10b
Are overlapped and pressed between the upper mold 11a and the lower mold 11b. Nickel steel plate 10a and stainless steel plate 10b
The surface to be joined is roughened with a grinder etc.,
Improve adhesion. Note that an adhesive or the like may be used.
【００１２】板厚としてニッケル鋼板１０ａは０．１ｍ
ｍ、ステンレス鋼板１０ｂは０．３ｍｍ、と０．５ｍｍ
を用い、圧力を１０〜１４ｋｇｆ／ｍｍ2 としてプレス
成形したところ、成形状態はクラッド鋼の場合とほぼ同
等であり接着性も良好であった。なお両鋼板１０ａ、１
０ｂの間に空気が閉じ込められる恐れがある場合は、適
当な位置に空気抜き穴を設け成形後溶接等で塞ぐように
するとよい。またセンタープレート８にはカソードガス
６やアノードガス７が通る穴が設けられるので、穴の内
面に接合面が現れる。この接合面の現れる周に沿って溶
接等によりシールすることにより接合面にガスが進入す
るのを防止できる。The thickness of the nickel steel sheet 10a is 0.1 m.
m, 0.3mm and 0.5mm for stainless steel plate 10b
And press-formed at a pressure of 10 to 14 kgf / mm 2 , the molded state was almost the same as that of the clad steel, and the adhesion was good. The two steel plates 10a, 1
If there is a possibility that air may be trapped during 0b, an air vent hole may be provided at an appropriate position and closed by welding or the like after molding. Further, since the center plate 8 is provided with a hole through which the cathode gas 6 and the anode gas 7 pass, a joint surface appears on the inner surface of the hole. By sealing by welding or the like along the periphery where the joint surface appears, it is possible to prevent gas from entering the joint surface.
【００１３】[0013]
【発明の効果】以上の説明より明らかなように、本発明
はセパレータのセンタープレートをニッケル鋼板とステ
ンレス鋼板を重ね合わせ金型で成形することにより次の
効果を奏する。 高価なクラッド鋼を使用しないのでセパレータのコス
トが大幅に低減する。 クラッド鋼のように製作寸法の制限がないのでセパレ
ータの大型化に対応できる。 ニッケル鋼板とステンレス鋼板の厚みの比に対してク
ラッド鋼のような制限がないので自由な厚み比の接合材
を構成できる。As apparent from the above description, the present invention has the following effects by forming a center plate of a separator by laminating a nickel steel plate and a stainless steel plate with a mold. Since expensive clad steel is not used, the cost of the separator is greatly reduced. Unlike the clad steel, there is no limit on the production size, so that it can be used to increase the size of the separator. Since there is no restriction such as clad steel on the thickness ratio of the nickel steel plate and the stainless steel plate, a joining material having a free thickness ratio can be formed.
【図１】実施の形態のセンタープレート成形方法を示す
図である。FIG. 1 is a diagram showing a center plate forming method according to an embodiment.
【図２】燃料電池の模式図である。FIG. 2 is a schematic diagram of a fuel cell.
【図３】クラッド鋼を用いたセンタープレート成形方法
を示す図である。FIG. 3 is a diagram showing a center plate forming method using clad steel.
１ 単セル ２ 電解質板 ３ カソード ４ アノード ５ セパレータ ６ カソードガス ７ アノードガス ８ センタープレート １０ クラッド鋼 １０ａ ニッケル鋼板 １０ｂ ステンレス鋼板 １１ａ 上金型 １１ｂ 下金型 DESCRIPTION OF SYMBOLS 1 Single cell 2 Electrolyte plate 3 Cathode 4 Anode 5 Separator 6 Cathode gas 7 Anode gas 8 Center plate 10 Clad steel 10a Nickel steel plate 10b Stainless steel plate 11a Upper die 11b Lower die
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭58−93170（ＪＰ，Ａ) 特開 昭64−3962（ＪＰ，Ａ) 特開 平１−93062（ＪＰ，Ａ) 特開 平３−61531（ＪＰ，Ａ) 特開 昭58−55130（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H01M 8/00 - 8/24 ────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-58-93170 (JP, A) JP-A-64-3962 (JP, A) JP-A-1-93062 (JP, A) JP-A-3-93 61531 (JP, A) JP-A-58-55130 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) H01M 8/00-8/24
Claims (2)
センタープレートを有するセパレータの製作方法におい
て、 前記センタープレートをニッケル鋼板とステンレス鋼板
を重ね合わせ両面から金型を押圧して成形することを特
徴とする燃料電池用セパレータの製作方法。1. A method of manufacturing a separator having a center plate for separating anode gas and cathode gas, wherein the center plate is formed by stacking a nickel steel plate and a stainless steel plate and pressing a mold from both sides. Manufacturing method of fuel cell separator.
との重ね合わせ面を粗に加工した後金型を押圧すること
を特徴とする請求項１記載の燃料電池用セパレータの製
作方法。2. The method for manufacturing a fuel cell separator according to claim 1, wherein a die is pressed after roughly processing a superposed surface of the nickel steel plate and the stainless steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7218866A JP3072033B2 (en) | 1995-08-28 | 1995-08-28 | Manufacturing method of fuel cell separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7218866A JP3072033B2 (en) | 1995-08-28 | 1995-08-28 | Manufacturing method of fuel cell separator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0963600A JPH0963600A (en) | 1997-03-07 |
| JP3072033B2 true JP3072033B2 (en) | 2000-07-31 |
Family
ID=16726542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7218866A Expired - Fee Related JP3072033B2 (en) | 1995-08-28 | 1995-08-28 | Manufacturing method of fuel cell separator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3072033B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004071502A (en) | 2002-08-09 | 2004-03-04 | Araco Corp | Separator for fuel cell and fuel cell equipped with the same |
| KR101289912B1 (en) * | 2005-06-15 | 2013-07-25 | 에이티아이 프로퍼티즈, 인코퍼레이티드 | Interconnects for solid oxide fuel cells and ferritic stainless steels adapted for use with solid oxide fuel cells |
-
1995
- 1995-08-28 JP JP7218866A patent/JP3072033B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0963600A (en) | 1997-03-07 |
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