JPH02288072A - Solid electrolyte fuel cell module - Google Patents
Solid electrolyte fuel cell moduleInfo
- Publication number
- JPH02288072A JPH02288072A JP1108185A JP10818589A JPH02288072A JP H02288072 A JPH02288072 A JP H02288072A JP 1108185 A JP1108185 A JP 1108185A JP 10818589 A JP10818589 A JP 10818589A JP H02288072 A JPH02288072 A JP H02288072A
- Authority
- JP
- Japan
- Prior art keywords
- fuel cell
- electrode
- current collector
- fuel
- collector tube
- 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.)
- Granted
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 114
- 239000007784 solid electrolyte Substances 0.000 title claims description 19
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 26
- 239000001301 oxygen Substances 0.000 claims abstract description 25
- 239000007787 solid Substances 0.000 claims description 18
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 239000000835 fiber Substances 0.000 abstract description 15
- 239000001257 hydrogen Substances 0.000 abstract description 6
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 5
- 239000007800 oxidant agent Substances 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 210000004027 cell Anatomy 0.000 description 74
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 13
- 150000002431 hydrogen Chemical class 0.000 description 6
- 229910052759 nickel Inorganic materials 0.000 description 6
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000011195 cermet Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 230000010220 ion permeability Effects 0.000 description 2
- 229910052746 lanthanum Inorganic materials 0.000 description 2
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 210000005056 cell body Anatomy 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 229910002076 stabilized zirconia Inorganic materials 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 229910001233 yttria-stabilized zirconia Inorganic materials 0.000 description 1
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
【発明の詳細な説明】
産業上の利用分野
この発明は、固体電解質を使用した燃料電池のうち、内
部集電子管と外部集電子管との間に複数の燃料電池単体
を配設した構造の固体電解質型燃料電池モジュールに関
するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a fuel cell using a solid electrolyte, in which a plurality of individual fuel cells are arranged between an internal current collector tube and an external current collector tube. The present invention relates to a type fuel cell module.
従来の技術
この種の電池の原理的な構成は、イオン伝導性のある固
体の電解質を挟んで酸素や空気などの酸化剤と水素ガス
などの還元剤とを配置し、その酸化剤および還元剤をそ
れぞれ電極とするものであり、電解質を介した酸化還元
反応に伴って電力を得るものである。このような構成の
燃料電池単体（セル）の１個のみで得られる電力は少な
いから、実用上は、特願平１−１１４３３Ｍの明ＩＩ［
ｌ閤に記載されているように、複数の燃料電池単体をイ
ンターコネクタで接続して１個の固体電解質型燃料電池
（スタック）を４１！１成し、そのスタックを更に複数
個接続して必要とする電圧・電流が得られるようにして
いる。第２図は多数のスタックからなる集合型燃料電池
（第４図参照）を構成する１ユニツトとしてモジュラ化
された従来の固体電解質型燃料電池の一例を示すもので
、ここに示す固体電解質型燃料電池１は、同心円筒状に
設けられた金属製の内部集電子管２と外部集電子管３と
、この両者間に配設された６個の燃料電池単体４とから
構成されている。Conventional technology The basic structure of this type of battery is that an oxidizing agent such as oxygen or air and a reducing agent such as hydrogen gas are placed between an ionically conductive solid electrolyte. Each serves as an electrode, and electricity is obtained through redox reactions via an electrolyte. Since the amount of power that can be obtained from a single fuel cell with such a configuration is small, in practical use, the method described in Japanese Patent Application No. 1-11433M, Mei II [
As described in 1, multiple single fuel cells are connected with an interconnector to form one solid oxide fuel cell (stack), and multiple stacks are further connected to form a single solid oxide fuel cell (stack). This ensures that the desired voltage and current can be obtained. Figure 2 shows an example of a conventional solid oxide fuel cell that is modularized as one unit constituting an aggregate fuel cell (see Figure 4) consisting of many stacks. The battery 1 is composed of an internal current collector tube 2 and an external current collector tube 3 made of metal, which are provided in a concentric cylindrical shape, and six fuel cells 4 disposed between the two.
前記各燃料電池単体４は、例えば第３図に示すように、
イツトリア安定化ジルコニア（ＹＳＺ）等を管状に形成
した固体電解質５と、この固体電解質５の内側に形成さ
れた酸凧電４ｆｉ６と、外側に形成された燃料電極７と
の３層＃ｌｌ造となっており、酸素電極６は、酸素イオ
ン透過性を有する酸化物、例えばペロプスカイト型ラン
タン系複合酸化物を木材とする多孔質体であり、また燃
料層４４ｉｉ７は、ニッケル（Ｎｉ）等の金属またはニ
ッケル等の金属とジルコニアとのサーメットの多孔質体
から形成されている。また、最外層の前記燃料電極７と
中間層の固体電解質５との両者には、長手方向に連続す
る１本のスリット８が形成され、このスリット８内には
インターコネクタ９が嵌装されており、このインターコ
ネクタ９は、前記最外層の燃料電極７と非接触状態で、
かつ最内層の酸素電極６と接触した状態に設けられてい
る。そして、酸素電極の内側の中空部分には酸素（０２
）を含んだ空気が供給され、また燃料電極の外側には水
素（Ｈ２） 、−酸化炭素（Ｃｏ）等の燃料が供給され
るようになっている。Each fuel cell unit 4 has, for example, as shown in FIG.
A three-layer structure consisting of a solid electrolyte 5 made of yttoria stabilized zirconia (YSZ) etc. in a tubular shape, an acid kite electrode 4fi6 formed inside this solid electrolyte 5, and a fuel electrode 7 formed on the outside. The oxygen electrode 6 is a porous body made of an oxide having oxygen ion permeability, such as a perovskite-type lanthanum-based composite oxide, and the fuel layer 44ii7 is made of a metal such as nickel (Ni). Alternatively, it is formed from a porous body of cermet made of metal such as nickel and zirconia. Further, a single slit 8 continuous in the longitudinal direction is formed in both the fuel electrode 7 in the outermost layer and the solid electrolyte 5 in the intermediate layer, and an interconnector 9 is fitted into the slit 8. This interconnector 9 is in a non-contact state with the outermost fuel electrode 7,
It is also provided in contact with the oxygen electrode 6 in the innermost layer. Then, oxygen (02
) is supplied, and fuel such as hydrogen (H2) and -carbon oxide (Co) is supplied to the outside of the fuel electrode.
そして、６個の燃料電池単体４は内部集電子管２の外周
を被包するニッケル製の４電！ａ稚フエルト１０にイン
ターコネクタ９をそれぞれ当接するとともに、外部集電
子管３の内周面に配設されたニッケル製の導電ｒａｎフ
ェルト１１に外周の燃料電極７をそれぞれ当接して並列
に接続され、これら６個の燃料電池単体４で１個の固体
電解質型燃料電池（スタック）１が構成され、このスタ
ック１を２０個個直列に接続して集合型燃料電池が構成
されている（第４図参照）。そして内部集電子管２は、
外部集電子管３に対して絶縁膜１２ａで絶縁されている
電極板（第４図でそれぞれ上側に位置する電極板）１２
に所定の手段（図示せず）によって導通されており、し
たがって各燃料電池単体４の酸素電極６の内側に空気を
流通させ、かつその燃料電極７の外周に水素ガスを流通
させることにより、固体電解質５を介した酸化・還元反
応により第４図の上側の電極板１２がＶｉＡ極となり、
下側の電極板１２が陰極となる。And, the six fuel cells 4 are made of nickel and are made of nickel and cover the outer periphery of the internal current collector tube 2! a The interconnectors 9 are brought into contact with the young felts 10, and the fuel electrodes 7 on the outer periphery are brought into contact with the nickel conductive felts 11 arranged on the inner peripheral surface of the external current collector tube 3, so that they are connected in parallel. These six individual fuel cells 4 constitute one solid oxide fuel cell (stack) 1, and 20 stacks 1 are connected in series to constitute an aggregate fuel cell (Fig. 4). reference). And the internal current collector tube 2 is
Electrode plates 12 (electrode plates located on the upper side in FIG. 4) are insulated from the external current collector tube 3 by an insulating film 12a.
Therefore, by passing air inside the oxygen electrode 6 of each fuel cell unit 4 and passing hydrogen gas around the outer periphery of the fuel electrode 7, solid Due to the oxidation/reduction reaction via the electrolyte 5, the upper electrode plate 12 in FIG. 4 becomes a ViA electrode,
The lower electrode plate 12 becomes a cathode.
発明が解決しようとする課題
したがって、前述した従来の固体電解質型燃料電池１は
、内部集電子管２および外部集電子管３が金属製のため
、電池全体の均熱化が図れて高発電特性が保持されると
ともに、機械的強度に優れ、また集合型燃料電池に組立
てる際に、組立てが容易である等の優れた点を有してい
るが、一方、固体電解質型燃料電池（スタック）１の各
燃料電池単体４からは約１Ｖの電圧しか得られず、また
この燃料電池単体４を並列に接続している各スタック１
も、発生する電圧は約１Ｖと低いという問題があり、こ
のスタック１を多数接続して構成する場合に集合型燃料
電池が大型化するという問題があった。はだ、電圧が低
い一方、その電流は１００Ａまで達するといわれ、その
ため低電圧・高電流となり、発生した電流が、スタック
１の各集電子管２．３を流れる際の抵抗ロスが大きくな
るという問題があり、この抵抗ロスを減少させるために
も電圧を高くすることが望まれていた。Problems to be Solved by the Invention Therefore, in the conventional solid oxide fuel cell 1 described above, since the internal current collector tube 2 and the external current collector tube 3 are made of metal, the temperature of the entire battery can be equalized and high power generation characteristics can be maintained. In addition, it has excellent mechanical strength and is easy to assemble when assembled into a collective fuel cell. Only about 1V of voltage can be obtained from the single fuel cell 4, and each stack 1 in which the single fuel cells 4 are connected in parallel
However, there is a problem that the generated voltage is as low as about 1 V, and when a large number of stacks 1 are connected, the aggregate fuel cell becomes large. However, while the voltage is low, the current is said to reach up to 100A, so the problem is that the voltage is low and the current is high, and the resistance loss increases when the generated current flows through each collector tube 2.3 of the stack 1. Therefore, it has been desired to increase the voltage in order to reduce this resistance loss.
この発明は上記事情に鑑みなされたもので、高電圧を発
生する固体電解質型燃料電池モジュールを提供すること
を目的としている。This invention was made in view of the above circumstances, and an object thereof is to provide a solid oxide fuel cell module that generates high voltage.
課題を解決するための手段
この発明は、上記の目的を達成するために、空間を存し
て同心円筒状に設けられた内部集電子管と外部集電子管
との間に、管状の固体電解質の内側に酸素電極または燃
料電極を、外側に燃料電極または酸素電極を設けた燃料
電池単体を複数個配設した固体電解質型燃料電池モジュ
ールにおいて、前記複数個の燃料電池単体が周方向に直
列に接続されていることを特徴としている。Means for Solving the Problems In order to achieve the above-mentioned object, the present invention provides a structure in which a tube-shaped solid electrolyte is connected between an inner current collector tube and an outer current collector tube that are provided in a concentric cylindrical shape with a space therebetween. In a solid oxide fuel cell module in which a plurality of fuel cells each having an oxygen electrode or a fuel electrode on the outside and a plurality of fuel cells each having an oxygen electrode or a fuel electrode on the outside, the plurality of fuel cells are connected in series in the circumferential direction. It is characterized by
作 用
上記のように固体電解質型燃料電池モジュールの同心状
に設けられた内部集電子管と外部集電子管との間に、複
数個の燃料電池単体を、周方向に直列に接続することに
より、内部集電子管と外部集電子管との間に複数個の燃
料電池単体を配設した構造の固体電解質型燃料電池の持
つ均熱性、組立て性に優れ、礪械的強度も大きい等の特
徴を損なうことなく、固体電解質型燃料電池モジュール
の１スタック当りの電圧を高くすることができる。Function As described above, by connecting a plurality of individual fuel cells in series in the circumferential direction between the internal current collector tube and the external current collector tube that are provided concentrically in the solid oxide fuel cell module, internal Without sacrificing the characteristics of solid oxide fuel cells, which have a structure in which multiple fuel cells are arranged between a current collector tube and an external current collector tube, such as excellent heat uniformity, ease of assembly, and high mechanical strength. , the voltage per stack of solid oxide fuel cell modules can be increased.
実 施 例
以下、この発明の一実施例を第１図に基づいて説明する
。なお、前記従来例と同一の構成部分には同一の符号を
付して、その詳細な説明を省略する。Embodiment Hereinafter, an embodiment of the present invention will be described based on FIG. Note that the same components as in the conventional example are given the same reference numerals, and detailed explanation thereof will be omitted.
固体電解質型燃料電池２１は、同心円筒状に設けられた
内部集電子管２と外部集電子管３とを備えており、この
内部集電子ｉ！２の外周面および外部集電子管３の内周
面とは、それぞれセラミックａｎ等の絶縁Ｉｌｉ維フェ
ルト２２で覆われており、また、これら両者間の空間は
、それぞれ放射方向に配設された金属製の５枚の集電子
板２３と、絶縁プレート２５を介在させて積＠された陽
極端子板２６および陰極端子板２７とによって円周方向
をほぼ６等分され、分割された各区画内には燃料電池単
体４が１個ずつ収納されている。The solid oxide fuel cell 21 includes an internal current collector tube 2 and an external current collector tube 3 provided in a concentric cylindrical shape, and this internal current collector i! The outer circumferential surface of the external current collector tube 2 and the inner circumferential surface of the external current collector tube 3 are each covered with an insulating Ili fiber felt 22 such as ceramic an, and the space between the two is covered with a metal layer disposed in the radial direction. The circumferential direction is divided into approximately 6 equal parts by five current collector plates 23 made of aluminum and an anode terminal plate 26 and a cathode terminal plate 27 stacked with an insulating plate 25 interposed therebetween. In each case, one fuel cell unit 4 is housed.
前記各燃料電池単体４は、イツトリア安定化ジルコニア
（ＹＳＺ）等を管状に形成した固体電解質５と、この固
体電解質５の内側に形成された酸素電極６と、外側に形
成された燃料電＃Ａ７どの３層構造となっており、酸素
電極６は、酸素イオン透過性を有する酸化物、例えばＬ
ａＭｎＯ３等のペロブスカイト型ランタン系複合酸化物
を木材とする多孔質体であり、また燃料電極７は、ニッ
タ。Each fuel cell unit 4 includes a solid electrolyte 5 made of yttria-stabilized zirconia (YSZ) or the like in a tubular shape, an oxygen electrode 6 formed inside this solid electrolyte 5, and a fuel cell #A7 formed outside. The oxygen electrode 6 is made of an oxide having oxygen ion permeability, such as L
It is a porous body made of perovskite-type lanthanum-based composite oxide such as aMnO3 as wood, and the fuel electrode 7 is made of Nitta.
ル等の金属またはニッケル等の金属とジルコニアとのサ
ーメットの多孔質体から形成されている。It is formed from a porous body of metal such as aluminum or cermet made of metal such as nickel and zirconia.
また最外層の前記燃料電極７と中間層の固体電解質５と
の両者には、長手方向に連続する１本のスリットが形成
され、このスリット内にはインターコネクタ９が嵌装さ
れており、このインターコネクタ９は、前記最外層の燃
料電極７と非接触状態で、かつ最内層の酸素電極７と接
触した状態に設けられている。Further, a slit continuous in the longitudinal direction is formed in both the fuel electrode 7 in the outermost layer and the solid electrolyte 5 in the intermediate layer, and an interconnector 9 is fitted into this slit. The interconnector 9 is provided in a non-contact state with the outermost fuel electrode 7 and in contact with the innermost oxygen electrode 7.
そして各燃料電池単体４は、内部集電子管２の外周と内
部集電子管３の内周にそれぞれ設けられた絶縁４Ｍ維フ
ェルト２２．２２により両側を挾持されるとともに、そ
のインターコネクタ９を前記集電子板２３（または陽極
端子板２６）に導電繊維フェルト２４を介して接続され
るとともに、燃料電池単体４の外周の燃料電極７上で、
かつ前記インターコネクタ９とこの燃料電池単体４の中
心とを結、Ｓ−直線の延長上となる部分、すなわちイン
ターコネクタ９に直径上で対向する部分を、同様に４電
Ｓ維フエルト２４を介して他の集電子板２３（または陰
極端子板２７）に接続されて、６１１！］の燃料電池単
体４が直列に接続され、また陽極端子板２６は外周側の
絶Ｒａ１ｆｔｌフェルト２２に形成されたスリットを介
して外部集電子管３に接続され、また陰極端子板２７は
内周側の絶縁繊維フェルト２２に形成されたスリットを
介して内部集電子管２に接続されている。Each fuel cell unit 4 is sandwiched on both sides by insulating 4M fiber felts 22 and 22 provided on the outer periphery of the internal current collector tube 2 and the inner periphery of the internal current collector tube 3, respectively, and the interconnector 9 is connected to the collector It is connected to the plate 23 (or the anode terminal plate 26) via the conductive fiber felt 24, and on the fuel electrode 7 on the outer periphery of the fuel cell unit 4,
In addition, the interconnector 9 and the center of the fuel cell unit 4 are connected, and a portion that is an extension of the S-line, that is, a portion that is diametrically opposite to the interconnector 9, is similarly connected through the four-electric S fiber felt 24. and connected to another current collector plate 23 (or cathode terminal plate 27), 611! ] are connected in series, the anode terminal plate 26 is connected to the external current collector tube 3 through a slit formed in the Ra1ftl felt 22 on the outer circumferential side, and the cathode terminal plate 27 is connected on the inner circumferential side. It is connected to the internal current collector tube 2 through a slit formed in the insulating fiber felt 22.
そして、これら６個の燃料電池単体４で１＠の固体電解
質型態ｎ電池（スタック）１が構成され、ざらにスタッ
ク１を２０個個直列に接続して乗台型燃料電池に組立て
られるとともに、各燃ｎ電池単体４の酸素電極６の内側
の中空部分には酸素（０２）を含んだ空気が供給され、
また燃料電極７の外側には水素（Ｈ２）が供給されるよ
うになっている。These 6 individual fuel cells 4 constitute 1 @ solid electrolyte type n battery (stack) 1, and roughly 20 stacks 1 are connected in series and assembled into a platform fuel cell. , air containing oxygen (02) is supplied to the hollow part inside the oxygen electrode 6 of each single fuel N battery 4,
Further, hydrogen (H2) is supplied to the outside of the fuel electrode 7.
このように、６個の燃料電池単体４を内部集電子管２と
外部集電子管３との間に、それぞれ絶縁ＳＦＬフェルト
２２．２２を介して挟持するとともに、インターコネク
タ９および燃料電極７の外周部をそれぞれ４電繊維フェ
ルト２３．２３を介して接続することにより、多孔質で
強度の小さい画電極６，７および固体電解質５とからな
る各燃料電池単体４を緩衝するとともに、熱膨張による
外径変化時の各燃料電池単体４の破損およびインターコ
ネクタ９および燃料電極７の集電子板２３゜２３との接
触不良の発生を防止するようになっている。In this way, the six fuel cells 4 are sandwiched between the internal current collector tube 2 and the external current collector tube 3 via the insulating SFL felts 22 and 22, respectively, and the outer periphery of the interconnector 9 and the fuel electrode 7 is By connecting the 4 electric fiber felts 23 and 23 respectively, each fuel cell unit 4 consisting of the porous and low-strength image electrodes 6 and 7 and the solid electrolyte 5 is buffered, and the outer diameter due to thermal expansion is This is to prevent damage to each fuel cell unit 4 and poor contact between the interconnector 9 and the fuel electrode 7 with the current collector plates 23 and 23 during the change.
次に、上記のように構成されるこの実施例の作用を説明
する。Next, the operation of this embodiment configured as described above will be explained.
固体電解質型燃料電池１は、水素を燃料として外部集電
子管３の内側の空間に供給するとともに、各燃料電池単
体４の中空部に酸素を酸化剤として供給すると、各燃料
電池単体４内において、イオン導電性の固体電解質５を
介して水素（Ｈ２）と酸素（０２）とが化学反応して水
（Ｈ２０＞が生成されるとともに、反応時の自由エネル
ギに相当する電子が陽極である酸素＠極６側に捕集され
る。In the solid oxide fuel cell 1, when hydrogen is supplied as a fuel to the space inside the external current collector tube 3, and oxygen is supplied as an oxidizing agent to the hollow part of each fuel cell unit 4, in each fuel cell unit 4, Hydrogen (H2) and oxygen (02) chemically react through the ionic conductive solid electrolyte 5 to generate water (H20>), and the electrons corresponding to the free energy during the reaction are used as an anode, oxygen@ It is collected on the pole 6 side.
そして、各酸素電極６に捕集された電子はそれぞれイン
ターコネクタ９から導電繊維フェルト２４および集電子
板２３を介してそれぞれ隣接する別の燃料電池単体４に
導電Ｎ＃ｌｔフェルト２４を経由して流れる。The electrons collected in each oxygen electrode 6 are then transferred from the interconnector 9 to another adjacent fuel cell unit 4 via the conductive fiber felt 24 and current collector plate 23 via the conductive N#lt felt 24. flows.
したがって、６個の燃料電池単体４が直列に接続される
ことにより、個々の燃料電池単体４の起電力が積算され
て高電圧の電力を取出すことができる。Therefore, by connecting the six fuel cells 4 in series, the electromotive forces of the individual fuel cells 4 are integrated, and high voltage power can be extracted.
このとき、内部集電子管２の外周面と外部集電子管３の
内周面とをそれぞれ絶縁繊維フェルト２４で覆っである
ので、各燃料電池単体４が内部集電子管２および外部集
電子管３と直接接触づることよって並列接続となるのを
防止されている。また、直列に接続される各燃料電池１
ｔ１体４の接続点が、１１電子板２３を用いることによ
って、各燃料電池単体４の外周面と、その中心を通る平
面との交差する部分、すなわち、各燃料電池単体４のイ
ンターコネクタ９と、この燃料電池単体４の燃料電極７
の外周面で、この燃料電池単体４の前記インターコネク
タ９と中心とを結ぶ直線の延長線上となる部分とにおい
て、導電ｍ維フェルト２４を介してそれぞれ集電子板２
３（または端子板２６゜２７）にそれぞれ接続されてい
るため、各燃料電池単体４は、その円形断面が接続点に
おいて対称となるように分割され、各燃料電池単体４内
の電流分布が対称となり、非対称に分割された場合に生
じる内部抵抗の増大、換言すれば電流密度が部分的に大
きくなることに起因する内部抵抗の増大を防止している
。At this time, since the outer peripheral surface of the internal current collector tube 2 and the inner peripheral surface of the external current collector tube 3 are each covered with an insulating fiber felt 24, each fuel cell unit 4 comes into direct contact with the internal current collector tube 2 and the external current collector tube 3. This prevents parallel connections. In addition, each fuel cell 1 connected in series
By using the 11 electronic board 23, the connection point of the t1 body 4 is located at the intersection of the outer peripheral surface of each fuel cell unit 4 and a plane passing through its center, that is, the interconnector 9 of each fuel cell unit 4. , the fuel electrode 7 of this fuel cell unit 4
On the outer peripheral surface of the single fuel cell unit 4, a current collector plate 2 is connected via a conductive m-fiber felt 24 at a portion that is an extension of a straight line connecting the interconnector 9 and the center of the single fuel cell unit 4.
3 (or terminal plates 26° and 27), each fuel cell unit 4 is divided so that its circular cross section is symmetrical at the connection point, and the current distribution within each fuel cell unit 4 is symmetrical. This prevents an increase in internal resistance caused by asymmetric division, in other words, an increase in internal resistance caused by a partial increase in current density.
なお、上記実施例においては、内部集電子管２の外周と
外部集電子管３１の内周とに、絶縁Ｓ維フェルト２２を
それぞれ設けて、燃料電池単体４の並列接続を防止して
いるが、この絶縁Ｓ維フェルト２２の代りに、内部集電
子管２の外周と外部集電子管３の内周とに絶縁コーティ
ングを施しても良い。In the above embodiment, an insulating S fiber felt 22 is provided on the outer periphery of the internal current collector tube 2 and the inner periphery of the external current collector tube 31 to prevent parallel connection of the fuel cells 4. Instead of the insulating S fiber felt 22, an insulating coating may be applied to the outer periphery of the internal current collector tube 2 and the inner periphery of the external current collector tube 3.
また、上記実施例においては、隣接する燃料電池単体４
，４を直列に接続するのに集電子板２３を用いた場合に
ついて説明したが、この集電子板２３を用いずに、各燃
料電池単体１１をリード線や３＃電ｌｌｉ維フエルト等
の導電部材を介して直列に接ａＶることもできる。In addition, in the above embodiment, the adjacent fuel cell unit 4
, 4 are connected in series, but instead of using the current collector plate 23, each fuel cell unit 11 is connected to a conductive wire such as a lead wire or 3# electric fiber felt. It is also possible to connect aV in series via a member.
発明の詳細
な説明したようにこの発明の固体電解質型燃料電池モジ
ュールは、同心円筒状に設けられた内部集電子管と外部
集電子管との間に、複数の固体電解質の内側にＭ素電極
または燃料電極を、外側に燃料電極または酸素電極を設
けた燃料電池単体を複数個配設した固体電解質型燃料電
池モジュールにおいて、前記複数個の燃料電池単体を周
方向に直列に接続したので、各固体電解質型燃料電池モ
ジュールの出力電圧を高めることができる。DETAILED DESCRIPTION OF THE INVENTION As described in detail, the solid oxide fuel cell module of the present invention has M elementary electrodes or fuel inside a plurality of solid electrolytes between an internal current collector tube and an external current collector tube provided in a concentric cylindrical shape. In a solid electrolyte fuel cell module in which a plurality of fuel cells each having a fuel electrode or an oxygen electrode provided on the outside are arranged, the plurality of fuel cells are connected in series in the circumferential direction, so that each solid electrolyte It is possible to increase the output voltage of a type fuel cell module.
また、各燃料電池単体同士の接続部、づなわちインター
コネクタと他の燃料電池単体のインターコネクタが導通
する外周箇所とを、各燃料電池単体の直径上で対称とな
る位置とすることにより、各燃料電池単体の内部抵抗を
低減させ、モジュール全体としての出力増大を図ること
ができる。In addition, by arranging the connection parts between each fuel cell unit, that is, the outer circumferential portion where the interconnector and the interconnector of another fuel cell unit are electrically connected, to be at symmetrical positions on the diameter of each fuel cell unit, By reducing the internal resistance of each individual fuel cell, it is possible to increase the output of the module as a whole.
第１図はこの発明の一実施例を示す断面正面図、第２図
は従来の燃料電池の断面正面図、第３図は燃料電池ｌい
体の斜視図、第４図は集合型燃料電池の断面正面図であ
る。
２・・・内部集電子管 ３・・・外部！電子管、 ４・
・・燃料電池単体、 ５・・・固体電解質、 ６・・・
酸素電極、 ７・・・燃料＠極、 ９・・・インターコ
ネクタ、２１・・・固体電解質型燃料電池、 ２２・・
・絶縁４１雑フェルト、
フェルト、
端子板、
２３・・・集電子板、 ２４・・・導電繊維２５・・・
絶縁プレート、 ２６・・・陽極２７・・・陰極端子板
。Fig. 1 is a cross-sectional front view showing an embodiment of the present invention, Fig. 2 is a cross-sectional front view of a conventional fuel cell, Fig. 3 is a perspective view of a fuel cell body, and Fig. 4 is a collective fuel cell. FIG. 2...Internal current collector tube 3...External! electron tube, 4.
...Fuel cell alone, 5...Solid electrolyte, 6...
Oxygen electrode, 7...Fuel@electrode, 9...Interconnector, 21...Solid electrolyte fuel cell, 22...
・Insulation 41 Miscellaneous felt, felt, terminal board, 23... Current collector board, 24... Conductive fiber 25...
Insulating plate, 26... Anode 27... Cathode terminal plate.
Claims (3)
管と外部集電子管との間に、管状の固体電解質の内側に
酸素電極または燃料電極を、外側に燃料電極または酸素
電極を設けた燃料電池単体を複数個配設した固体電解質
型燃料電池モジュールにおいて、前記複数個の燃料電池
単体が周方向に直列に接続されていることを特徴とする
固体電解質型燃料電池モジュール。(1) An oxygen electrode or a fuel electrode is provided inside the tubular solid electrolyte, and a fuel electrode or oxygen electrode is provided outside the tubular solid electrolyte between an internal current collector tube and an external current collector tube that are provided in a concentric cylindrical shape with a space between them. What is claimed is: 1. A solid oxide fuel cell module in which a plurality of single fuel cells are arranged, characterized in that the plurality of single fuel cells are connected in series in a circumferential direction.
酸素電極または燃料電極に導通されかつ外周に突出した
インターコネクタを有し、かつ周方向に互いに隣接する
各燃料電池単体のうちの一方の燃料電池単体におけるイ
ンターコネクタに直径上で対向する外周箇所に導電性部
材を介して直列に接続されていることを特徴とする請求
項１記載の固体電解質型燃料電池モジュール。(2) Each of the plurality of fuel cell units has an interconnector that is electrically connected to the inner oxygen electrode or fuel electrode and protrudes from the outer periphery, and one of the fuel cell units adjacent to each other in the circumferential direction. 2. The solid oxide fuel cell module according to claim 1, wherein the solid oxide fuel cell module is connected in series via a conductive member to an outer peripheral portion diametrically opposed to the interconnector of the single fuel cell.
ていることを特徴とする請求項２記載の固体電解質型燃
料電池モジュール。(3) The solid oxide fuel cell module according to claim 2, wherein a metal plate is used as the conductive member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1108185A JP2816471B2 (en) | 1989-04-27 | 1989-04-27 | Solid oxide fuel cell module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1108185A JP2816471B2 (en) | 1989-04-27 | 1989-04-27 | Solid oxide fuel cell module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02288072A true JPH02288072A (en) | 1990-11-28 |
| JP2816471B2 JP2816471B2 (en) | 1998-10-27 |
Family
ID=14478155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1108185A Expired - Fee Related JP2816471B2 (en) | 1989-04-27 | 1989-04-27 | Solid oxide fuel cell module |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2816471B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999039396A1 (en) * | 1998-02-03 | 1999-08-05 | Siemens Westinghouse Power Corporation | Connections for solid oxide fuel cells |
-
1989
- 1989-04-27 JP JP1108185A patent/JP2816471B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999039396A1 (en) * | 1998-02-03 | 1999-08-05 | Siemens Westinghouse Power Corporation | Connections for solid oxide fuel cells |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2816471B2 (en) | 1998-10-27 |
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