JPH06176790A - Fuel cell module - Google Patents
Fuel cell moduleInfo
- Publication number
- JPH06176790A JPH06176790A JP43A JP32309392A JPH06176790A JP H06176790 A JPH06176790 A JP H06176790A JP 43 A JP43 A JP 43A JP 32309392 A JP32309392 A JP 32309392A JP H06176790 A JPH06176790 A JP H06176790A
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- cell
- cells
- parallel
- connected together
- 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、一例として円筒型固体
電解質燃料電池モジュールに係り、特にその集電部に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylindrical solid electrolyte fuel cell module as an example, and more particularly to a current collector of the module.
【0002】[0002]
【従来の技術】従来の円筒型固体電解質燃料電池モジュ
ールにおいては、複数のセルチューブを並列及び直列に
適宜電気的に接続し、所定の電圧、電流とし外部へ取り
出す。図3にその構造を示すに、複数の単電池を構成す
るセルチューブ1をバンドル集電材3にて並列に接続
し、セルチューブ1の燃料供給管4に燃料5を注入する
と共にセルチューブ1より残燃料6を排出し、他方空気
7を供給すると共に残空気8を排出するものである。こ
の場合、バンドルの構成は、一本のセルチューブ1に異
常が生じてもモジュール全体として運転を可能とするた
めである。2. Description of the Related Art In a conventional cylindrical solid electrolyte fuel cell module, a plurality of cell tubes are electrically connected in parallel and in series as appropriate, and a predetermined voltage and current are taken out to the outside. As shown in FIG. 3, the cell tubes 1 constituting a plurality of unit cells are connected in parallel by a bundle current collector 3, fuel 5 is injected into a fuel supply pipe 4 of the cell tube 1, and at the same time, from the cell tube 1. The residual fuel 6 is discharged, while the air 7 is supplied and the residual air 8 is discharged. In this case, the configuration of the bundle is to allow the entire module to operate even if an abnormality occurs in one cell tube 1.
【0003】[0003]
【発明が解決しようとする課題】上述の円筒型固体電解
質燃料電池にあっては、複数のセルチューブ1に燃料を
分配し、発電するものであるが、各セルチューブ1に均
一に燃料を分配することができない。すなわち、モジュ
ールにあっては、燃料利用率を高めて運転する場合、換
言すれば燃料供給量を減らす場合は特に燃料5の分配不
均一が生じ、燃料利用率をセルチューブ1の限界まで高
めることができず発電効率の低下を招き、また、下流側
単電池の燃料欠乏状態では他の単電池の起電力にて電圧
がかかり強制的に電流が流れて負電位となり電気的な破
壊をもたらす。また、燃料をセルチューブ1の外側に流
すモジュールにおいても、高燃料利用率時には、セルチ
ューブ1の位置による燃料濃度の不均一が生じるため、
上述の問題が生ずる。In the above-mentioned cylindrical solid oxide fuel cell, the fuel is distributed to the plurality of cell tubes 1 to generate electric power, but the fuel is evenly distributed to each cell tube 1. Can not do it. That is, in the module, when the fuel utilization rate is increased, that is, in other words, when the fuel supply amount is reduced, the fuel 5 is unevenly distributed, and the fuel utilization rate is increased to the limit of the cell tube 1. However, when the downstream side unit cell is in a fuel-deficient state, a voltage is applied by the electromotive force of another unit cell and a current forcibly flows to a negative potential, resulting in electrical breakdown. In addition, even in a module in which the fuel flows to the outside of the cell tube 1, when the fuel utilization rate is high, the fuel concentration becomes non-uniform depending on the position of the cell tube 1.
The problems mentioned above arise.
【0004】本発明は、上記事情に鑑みなされたもの
で、高燃料利用率での安定な運転を可能ならしめる燃料
電池モジュールの提供を目的とする。The present invention has been made in view of the above circumstances, and an object thereof is to provide a fuel cell module which enables stable operation at a high fuel utilization rate.
【0005】[0005]
【課題を解決するための手段】上述の目的を達成する本
発明は、一本のセルチューブ上に複数の単電池を構成す
る燃料電池において、複数本のセルチューブを電気的に
並列に接続し、この並列に接続されたセルチューブの単
電池を相互に電気的に接続したことを特徴とする。Means for Solving the Problems The present invention which achieves the above-mentioned object is to provide a fuel cell in which a plurality of unit cells are formed on one cell tube, by connecting the plurality of cell tubes electrically in parallel. , The cell tubes connected in parallel are electrically connected to each other.
【0006】[0006]
【作用】モジュールにおいて燃料分配のアンバランスが
生じた場合でも、燃料供給が不十分な単電池はセル抵抗
が増加して電流が減少し、他の並列に接続されている単
電池を流れる電流が増加する。この様に燃料供給状態に
合わせて、電流が配分されるため、単電池が電気的に破
壊されることを防ぎ、かつ燃料供給が不十分なセルチュ
ーブの上流側の単電池についても正常に機能することが
可能となる。[Effect] Even if the fuel distribution is unbalanced in the module, the cell resistance of the unit cell with insufficient fuel supply increases and the current decreases, and the current flowing through other unit cells connected in parallel is reduced. To increase. In this way, the current is distributed according to the fuel supply state, so the cells are prevented from being electrically damaged, and the cells on the upstream side of the cell tube with insufficient fuel supply function normally. It becomes possible to do.
【0007】[0007]
【実施例】ここで、図1、図2を参照して本発明の実施
例を説明する。なお、図3と同一部分には同符号を付
す。図1において、セルチューブ1の下流側(出口側)
単電池12には、同一電池について素子集電材2にて接
続されている。この場合、本例では最上段のものと2段
目の単電池について素子集電材2が施される。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Now, an embodiment of the present invention will be described with reference to FIGS. The same parts as those in FIG. 3 are designated by the same reference numerals. In FIG. 1, the downstream side (outlet side) of the cell tube 1
The same battery is connected to the unit cell 12 by the element current collector 2. In this case, in this example, the element current collector 2 is applied to the uppermost cell and the second cell.
【0008】図2は電気接続図である。1本のセルチュ
ーブ1に貼り付けられた、多数の単電池12は直列にそ
れぞれ接続されていて、最上端をバンドル集電材3にて
数本のセルチューブが並列に接続され、更にその下の単
電池12最上段と2段目とをそれぞれ素子集電材2にて
並列に接続されていて、下端部もバンドル集電材3にて
並列に接続されている。この接続は5本のセルチューブ
1を1組として、他の組の+電極9と−電極10とを接
続した構成とした。FIG. 2 is an electrical connection diagram. A large number of unit cells 12 attached to one cell tube 1 are connected in series, and several cell tubes are connected in parallel with the bundle current collector 3 at the uppermost end. The uppermost cell and the second cell of the unit cell 12 are connected in parallel by the element current collector 2, and the lower end is also connected in parallel by the bundle current collector 3. For this connection, five cell tubes 1 were set as one set, and the + electrode 9 and the-electrode 10 of the other set were connected.
【0009】図1に示すモジュールにあっては、上部に
燃料導入管と残燃料排出管が二重管となっていて、燃料
5が導入され燃料供給管4内に供給される。この燃料供
給管4は円筒型のセルチューブ1の下方まで挿入されて
いるので燃料5は下方よりセルチューブ1の内側より上
昇しつつ発電に供つつセルチューブ1の上端より残燃料
6として排出される。前述のセルチューブ1は多数がモ
ジュール内に収納されていて、その外周部には多数の単
電池12が貼り付けられている。一方、本モジュールの
下部は空気1の供給部と残空気8の排出口が存在する。
また、一本のセルチューブ1の単電池12は、それぞれ
直列にインタコネクタにて接続されている。セルチュー
ブ1の最上端をバンドル集電材3によりまず並列に接続
され、さらにバンドル間を直列に接続し外部へ電気出力
として取出される。In the module shown in FIG. 1, the fuel introduction pipe and the residual fuel discharge pipe are double pipes in the upper part, and the fuel 5 is introduced and supplied into the fuel supply pipe 4. Since the fuel supply pipe 4 is inserted below the cylindrical cell tube 1, the fuel 5 is discharged from the upper end of the cell tube 1 as the residual fuel 6 while being used for power generation while rising from below the inside of the cell tube 1. It A large number of the cell tubes 1 described above are housed in a module, and a large number of unit cells 12 are attached to the outer peripheral portion thereof. On the other hand, the lower part of this module has a supply part for the air 1 and an outlet for the residual air 8.
The unit cells 12 of one cell tube 1 are connected in series by an interconnector. The uppermost ends of the cell tubes 1 are first connected in parallel by the bundle current collector 3, and the bundles are connected in series to be taken out as an electric output to the outside.
【0010】単電池12の最上段と2段目とに素子集電
材2を設けることにより、燃料欠乏状態に出口素子がな
っても、強制的な通電は行なわれず、同電位により電気
的に保護される。By providing the element current collectors 2 at the uppermost and second steps of the unit cell 12, even if the outlet element is in a fuel-deficient state, forced energization is not performed and the elements are electrically protected by the same potential. To be done.
【0011】素子集電材2は、バンドルを構成する単電
池間を全て接続することが最も効果的であるが、必要に
応じて適当数接続すればよい。また、本発明は燃料をチ
ューブ外側に流すモジュールにおいても適用できる。更
に、高温水蒸気電解セルについても適用可能である。It is most effective to connect all the unit cells constituting the bundle with the element current collector 2, but an appropriate number may be connected if necessary. The present invention can also be applied to a module in which fuel flows to the outside of the tube. Further, it can be applied to a high temperature steam electrolysis cell.
【0012】[0012]
【発明の効果】以上、詳述した如く本発明によれば、一
本のセルチューブに複数の単電池を構成する固体電解質
燃料電池モジュールにおいて、素子集電材によりバンド
ルを構成する単電池間を接続することにより、燃料の不
均一による単電池の電気的な破壊より防ぐことが可能と
なる。これにより、モジュールの燃料利用率をより高く
設定することができると同時に信頼性を高めることがで
きる。As described above in detail, according to the present invention, in a solid electrolyte fuel cell module in which a single cell tube constitutes a plurality of single cells, the element current collectors connect the single cells constituting the bundle. By doing so, it is possible to prevent the electric breakdown of the unit cell due to the non-uniformity of the fuel. As a result, the fuel utilization rate of the module can be set higher and at the same time the reliability can be improved.
【図1】一実施例のモジュールの構成図。FIG. 1 is a block diagram of a module according to an embodiment.
【図2】モジュールの電気接続図。FIG. 2 is an electrical connection diagram of the module.
【図3】従来例の構成図。FIG. 3 is a configuration diagram of a conventional example.
1 セルチューブ 2 素子集電材 3 バンドル集電材 12 単電池 1 Cell tube 2 Element current collector 3 Bundle current collector 12 Single battery
Claims (1)
構成する燃料電池において、 複数本のセルチューブを電気的に並列に接続し、この並
列に接続されたセルチューブの単電池を相互に電気的に
接続したことを特徴とする燃料電池モジュール。1. A fuel cell comprising a plurality of unit cells on one cell tube, wherein the plurality of cell tubes are electrically connected in parallel, and the unit cells of the cell tubes connected in parallel are mutually connected. A fuel cell module electrically connected to the fuel cell module.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP43A JPH06176790A (en) | 1992-12-02 | 1992-12-02 | Fuel cell module |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP43A JPH06176790A (en) | 1992-12-02 | 1992-12-02 | Fuel cell module |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH06176790A true JPH06176790A (en) | 1994-06-24 |
Family
ID=18151002
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP43A Pending JPH06176790A (en) | 1992-12-02 | 1992-12-02 | Fuel cell module |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH06176790A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100840111B1 (en) * | 2006-02-28 | 2008-06-19 | 산요덴키가부시키가이샤 | Fuel Cell Stack |
JP2010205619A (en) * | 2009-03-04 | 2010-09-16 | Kyocera Corp | Cell stack of horizontal solid oxide fuel cell, and fuel cell |
JP2011165613A (en) * | 2010-02-15 | 2011-08-25 | Kyocera Corp | Horizontal stripe type solid oxide fuel cell bundle and fuel cell |
-
1992
- 1992-12-02 JP JP43A patent/JPH06176790A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100840111B1 (en) * | 2006-02-28 | 2008-06-19 | 산요덴키가부시키가이샤 | Fuel Cell Stack |
JP2010205619A (en) * | 2009-03-04 | 2010-09-16 | Kyocera Corp | Cell stack of horizontal solid oxide fuel cell, and fuel cell |
JP2011165613A (en) * | 2010-02-15 | 2011-08-25 | Kyocera Corp | Horizontal stripe type solid oxide fuel cell bundle and fuel cell |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20000613 |