JPS58164168A - Cell stack of fuel cell - Google Patents
Cell stack of fuel cellInfo
- Publication number
- JPS58164168A JPS58164168A JP57047985A JP4798582A JPS58164168A JP S58164168 A JPS58164168 A JP S58164168A JP 57047985 A JP57047985 A JP 57047985A JP 4798582 A JP4798582 A JP 4798582A JP S58164168 A JPS58164168 A JP S58164168A
- Authority
- JP
- Japan
- Prior art keywords
- cell
- stack
- closed containers
- cell blocks
- plate
- 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
-
- 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
- H01M8/247—Arrangements for tightening a stack, for accommodation of a stack in a tank or for assembling different tanks
-
- 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)
Abstract
Description
【発明の詳細な説明】
この発明は１例えばりん酸電解質形燃料電池に適用され
る燃料電池のセルスタックの構造に関する・
周知のようにこの種の燃料電池は、空気電極。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the structure of a cell stack of a fuel cell applied to, for example, a phosphoric acid electrolyte fuel cell.As is well known, this type of fuel cell uses an air electrode.
電解質を含浸させたマトリックス、および燃料電極から
なる単電池と、ｔ１！気通路、燃料通路溝が形成された
セパレートプレートとしてのバイポーラフレートとを交
互に多数積層してセルスタックを構成している。A single cell consisting of a matrix impregnated with an electrolyte and a fuel electrode, and t1! A cell stack is constructed by alternately stacking a large number of bipolar plates serving as separate plates in which air passages and fuel passage grooves are formed.
かかるセルスタックは組立状［Ｃおいて各単電池の電極
面が一様な面圧を受けていることが望まれる。すなわち
電極面に加わる面圧は、出力特性。In such a cell stack, it is desirable that the electrode surfaces of each unit cell be subjected to uniform surface pressure in the assembled state [C]. In other words, the surface pressure applied to the electrode surface is the output characteristic.
嗜方向での熱伝導特性に大きな影響を及ぼし、内圧が適
正圧力値以下に低い部分があると、その部分の接触電気
抵抗、ＩＩ触熱抵抗が著しく増加する。This has a large effect on the heat conduction characteristics in the opposite direction, and if there is a portion where the internal pressure is lower than the appropriate pressure value, the contact electrical resistance and II tactile thermal resistance of that portion will increase significantly.
ところでセルスタックの組立体は１頭記のように単電池
と剛性のあるバイポーラプレートとの積層体にエンドプ
レートを当てがった上で全体をボルト締めして組立てら
れる。また単電池の積層枚数が多いセルスタックでは、
組立体に十分な機械的強度を与えるため、および単電池
に生じる過変な発生熱を除熱するためＫ 、１％にセル
スタックを複数段のセルブロックに分けて積み重ね、各
ブロック相互間に中間プレートとしての支持板あるいは
冷却板を介挿して構成されている。しかして前記し友各
プレートは加工精度、成形精度上の問題で局部的な厚さ
寸法のばらつきが生じ、十分に均一平坦な面に仕上げる
ことは実際の量産品として極めて困難ヤ゛ｉって、厚さ
寸法が局部的に多少不均一であったり、そりが生じて多
少湾曲することが避けられない。この結果としてセルス
タックの構成部品を積み重ねた上で締付は組立て皮際に
は。By the way, the cell stack assembly is assembled by applying end plates to a laminate of unit cells and rigid bipolar plates, and then tightening the entire structure with bolts, as described above. In addition, in a cell stack with a large number of stacked cells,
In order to provide sufficient mechanical strength to the assembly and to remove excessive heat generated in the cells, the cell stack is divided into multiple cell blocks and stacked on top of each other, with a space between each block. It is constructed by inserting a support plate or a cooling plate as an intermediate plate. However, as mentioned above, each plate has local variations in thickness due to problems with processing accuracy and molding accuracy, and it is extremely difficult to finish it with a sufficiently uniform and flat surface as an actual mass-produced product. It is unavoidable that the thickness dimension may be locally a little non-uniform, or that the product will warp and become somewhat curved. As a result, the components of the cell stack are stacked and tightened at the time of assembly.
電極の面圧分布が不均一になる。この対策として従来、
一部にクッション材を介挿する方法屯一部で試みられて
いるが、なお十分満足できる成果を得ることができず、
更に優れた解決策が望まれている。The surface pressure distribution of the electrode becomes uneven. Conventionally, as a countermeasure for this,
Some attempts have been made to insert cushioning material into some areas, but the results have not yet been satisfactory.
A better solution is desired.
この発明は上述の点にかんがみなされたものであり、そ
の目的はセルスタック組立体に簡易な手段を追加設置し
たことＫより、各電極に加わる面圧分布の均一化が図れ
るよう圧した燃料電池のセルスタックを提供することＫ
ある。This invention has been made in consideration of the above points, and its purpose is to provide a fuel cell pressurized so that the distribution of surface pressure applied to each electrode can be made uniform by additionally installing a simple means in the cell stack assembly. K
be.
以下この発明を図示実施例に基づき詳述する。The present invention will be described in detail below based on illustrated embodiments.
図示例はセルスタックを３段のセルブロックに分けて積
み重ね、中間の支持板および上下両端のエンドプレート
を介してスタック全体をボルトにより締付けて組立構成
したものを示す、因においてはｌＦｉ各段のセルブロッ
クであり、各セルブロック１はそれぞれ複数の単電池２
とセパレートプレートと一例としてのバイポーラプレー
ト３とを交互に積層した組立体としてなり、またセルブ
ロック１の相互間には中間プレートとしての支持板４が
介在され、更に上下にはエンドブレー）５ｆ配し、これ
等の支持板４およびエンドプレート５を介して組立ポル
）６により一体に締付けられている。なお７はエンドプ
レート５とナツト８との関に介挿された皿ばねである。The illustrated example shows an assembled structure in which the cell stack is divided into three stages of cell blocks stacked one on top of the other, and the entire stack is tightened with bolts via an intermediate support plate and end plates at both upper and lower ends. Each cell block 1 includes a plurality of single cells 2.
It is an assembly in which separate plates and bipolar plates 3 as an example are laminated alternately, and a support plate 4 as an intermediate plate is interposed between the cell blocks 1, and an end brake (5f arrangement) is arranged above and below. However, they are tightened together by an assembly pole 6 via the support plate 4 and end plate 5. Note that 7 is a disc spring inserted between the end plate 5 and the nut 8.
ところでこの発明に！９、各セルブロック】と各プレー
トとの間には非圧縮性流体である油等の液体９を封入し
た密閉容器１０が介挿され、かつ各密閉容器１０は連通
配管１１を介して相互に連通接続されている。なお密閉
賽器１０は１図示例では各セルブロック１の上端面と支
持板４および上部のエンドプレート５との間（介挿した
例を示したか、各セルブロック１の下端面と支持板４お
よび下部エンドプレート５との間に介挿してもよいし、
あるいは各セルブロック１の上下端にそれぞれ介挿して
もよい。さて密閉容器］０は、鉄−ニッケル合金１例え
ばインバーのごとく、その熱膨張率がカーボン末、を・
主材に焼結成形されたバイポーラプレート３のそれと近
似な金属材料で作られており、その寸法はセルブロック
１の端面全域をカバーするように定められている。Ｅ、
かも少なくとも、セルブロック１の端面に接する側の壁
面の肉厚を十分薄くしてたわみ性を与えるように−成さ
ｎている。By the way, about this invention! A sealed container 10 containing a liquid 9 such as oil, which is an incompressible fluid, is inserted between each cell block] and each plate, and each sealed container 10 is connected to each other via a communicating pipe 11. It is connected in communication. In the illustrated example, the sealing vessel 10 is placed between the upper end surface of each cell block 1 and the support plate 4 and the upper end plate 5 (in the illustrated example, the lower end surface of each cell block 1 and the support plate 4 are interposed). and the lower end plate 5, or
Alternatively, they may be inserted at the upper and lower ends of each cell block 1, respectively. 0 is an iron-nickel alloy 1, such as Invar, whose coefficient of thermal expansion is carbon powder.
It is made of a metal material similar to that of the bipolar plate 3 which is sintered into the main material, and its dimensions are determined so as to cover the entire end face of the cell block 1. E,
At least, the wall surface of the cell block 1 on the side in contact with the end surface is made sufficiently thin to provide flexibility.
かかる構成により、セルブロック１．中間支持板４．密
封容器１０．上下エンドプレート５を図示のように積み
重ね、ボルト６を介してナツト８によりスタック組立体
の全体を締付けると１組立体は加圧を受けるようになる
。この場合にセルブロック１の端面ｈｅわみ性のあるフ
レキシブルな密閉容ｓ１０の壁面Ｋ１１ｌ、て押圧され
、しかもパスカルの原理により各密閉容器内に封入され
ている作動液体９の圧力は各点で均等に作用する。し友
がって締付圧力は各セルブロックＩＫ対して等しく働き
、かつ密閉容器１０のたわみ性により均等面圧分布とな
る。この結果、各単電池の電極には一様な面圧が加わる
ことになる。With this configuration, cell block 1. Intermediate support plate 4. Sealed container 10. When the upper and lower end plates 5 are stacked as shown in the figure and the entire stack assembly is tightened with nuts 8 through bolts 6, one assembly is subjected to pressure. In this case, the end face of the cell block 1 is pressed by the wall K11l of the flexible sealed container s10, and the pressure of the working liquid 9 sealed in each sealed container according to Pascal's principle is at each point. Acts evenly. Therefore, the tightening pressure acts equally on each cell block IK, and due to the flexibility of the closed container 10, uniform surface pressure distribution is achieved. As a result, uniform surface pressure is applied to the electrodes of each unit cell.
以上述べ友ように、この発明はセルブロックのｇｌＡｔ
ｈ全域をカバーする寸法を有し、かつ少なくともセルブ
ロックに接する側の壁面をフレキシブルな＊ｔｉｉとし
て構成され友液体封入の密閉容器をセルブロックと中間
支持板、エンドプレート等との関に介挿するとともに、
各密閉容器の相互間を連通接続し友ものであり、したが
ってセルスタック構成部品の加工精度に基因する面圧の
不均一性を巧みに吸収し、各セルブロックの相互を含め
セルスタンク全体での各単電池電極への面圧を一様にす
ることができ、かくしてセルスタックの出力。As mentioned above, this invention is a cell block glAt
An airtight container filled with liquid and having dimensions that cover the entire area and having at least the wall surface in contact with the cell block as a flexible *tii is inserted between the cell block and the intermediate support plate, end plate, etc. At the same time,
It communicates and connects each sealed container with each other, so it skillfully absorbs uneven surface pressure caused by the processing precision of the cell stack components, and each cell block, including each cell block, is The surface pressure on the single cell electrodes can be made uniform, thus increasing the output of the cell stack.
伝熱性向上に大きく寄与することができる。It can greatly contribute to improving heat conductivity.
図はこの発明の一実施例を示す一部断面の組立構成図で
ある。
】・・・セルブロック、２・・・単電池、３・・・パイ
Ｉｔ’−ラブレート、４・・・中間プレートとしての支
持板。
５・・・エンドプレート％６・・・組立ボルト、９・・
・液体。
１０・・・密閉容器、１１・・・連通管。The figure is a partially sectional assembled configuration diagram showing an embodiment of the present invention. ]...Cell block, 2...Single cell, 3...PiIt'-love plate, 4...Support plate as intermediate plate. 5... End plate %6... Assembly bolt, 9...
·liquid. 10... airtight container, 11... communicating pipe.
Claims (1)
してなるセルブロックの複数段を相互間に剛性の中間プ
レートを介在して積み重ね、更に両端に配し次エンドプ
レートの間に挾んで一体に締付けて組立構成し尺燃料電
池のセルスタックにおいて、セルブロックの端面全域を
カッく−する寸法ヲ有し、かつ少なくともセルブロック
に接するＩＩＩの壁面がフレキシブルな壁面として構成
されり液体封入の密閉容器をセルブロックと前記プレー
トとの間に介挿するとともに、各密閉容器の相互間を連
通接続したことを特徴とする燃料電池のセルスタック。 ２、特許請求の範囲第１項に記載のセルスタックにおい
て、密閉容器はその熱膨張率力！セルブロックの構成部
品であるカーボン板に近似な金嬌で作らｎ、かつその壁
面の厚さを薄くして几わみ性を与えるよう構成され皮も
のであることを特徴とする燃料電池のセルスタック。[Claims] 1) A plurality of single cells are connected to each other through a rate plate.
In a cell stack of a fuel cell, a plurality of stages of cell blocks are stacked with rigid intermediate plates interposed between them, and further arranged at both ends, and then sandwiched between end plates and tightened together. It has dimensions that cover the entire end surface of the cell block, and at least the wall surface of III in contact with the cell block is configured as a flexible wall surface, and a liquid-filled airtight container is inserted between the cell block and the plate. In addition, a fuel cell cell stack characterized in that the sealed containers are connected to each other. 2. In the cell stack according to claim 1, the closed container has a thermal expansion coefficient of ! A fuel cell cell characterized in that it is made of a metal material similar to a carbon plate that is a component of a cell block, and that the wall surface is thin and made of leather to give flexibility. stack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57047985A JPS58164168A (en) | 1982-03-25 | 1982-03-25 | Cell stack of fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57047985A JPS58164168A (en) | 1982-03-25 | 1982-03-25 | Cell stack of fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58164168A true JPS58164168A (en) | 1983-09-29 |
Family
ID=12790603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57047985A Pending JPS58164168A (en) | 1982-03-25 | 1982-03-25 | Cell stack of fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58164168A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6337573A (en) * | 1986-07-31 | 1988-02-18 | Ishikawajima Harima Heavy Ind Co Ltd | Fuel cell system |
| US5419980A (en) * | 1992-06-18 | 1995-05-30 | Honda Giken Kogyo Kabushiki Kaisha | Fuel cell stack and method of pressing together the same |
| EP0750797A1 (en) * | 1994-02-23 | 1997-01-02 | William R. Richards | Fuel cell having uniform compressive stress distribution over active area |
| US7163761B2 (en) | 2002-11-14 | 2007-01-16 | 3M Innovative Properties Company | Fuel cell stack |
-
1982
- 1982-03-25 JP JP57047985A patent/JPS58164168A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6337573A (en) * | 1986-07-31 | 1988-02-18 | Ishikawajima Harima Heavy Ind Co Ltd | Fuel cell system |
| US5419980A (en) * | 1992-06-18 | 1995-05-30 | Honda Giken Kogyo Kabushiki Kaisha | Fuel cell stack and method of pressing together the same |
| EP0750797A1 (en) * | 1994-02-23 | 1997-01-02 | William R. Richards | Fuel cell having uniform compressive stress distribution over active area |
| EP0750797A4 (en) * | 1994-02-23 | 2000-02-09 | William R Richards | Fuel cell having uniform compressive stress distribution over active area |
| US7163761B2 (en) | 2002-11-14 | 2007-01-16 | 3M Innovative Properties Company | Fuel cell stack |
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