JP3104336B2 - Fuel cell - Google Patents
Fuel cellInfo
- Publication number
- JP3104336B2 JP3104336B2 JP03298036A JP29803691A JP3104336B2 JP 3104336 B2 JP3104336 B2 JP 3104336B2 JP 03298036 A JP03298036 A JP 03298036A JP 29803691 A JP29803691 A JP 29803691A JP 3104336 B2 JP3104336 B2 JP 3104336B2
- Authority
- JP
- Japan
- Prior art keywords
- nitrogen gas
- gas discharge
- cathode
- differential pressure
- pressure
- 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
-
- 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)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、燃料電池に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel cell.
【０００２】[0002]
【従来の技術】現在、次世代の発電設備として溶融炭酸
塩型の燃料電池の開発が進められている。2. Description of the Related Art Currently, a molten carbonate fuel cell is being developed as a next-generation power generation facility.
【０００３】該溶融炭酸塩型の燃料電池は、溶融炭酸塩
からなる電解質をカソードとアノードで挟んで燃料電池
本体を形成し、該燃料電池本体を窒素ガスの詰った圧力
容器内に封入して、カソードに酸化剤ガスを、又、アノ
ードに燃料ガスを供給することにより、燃料電池本体内
部で電気化学反応を起こさせて発電を行わせるようにし
たものである。In the molten carbonate fuel cell, a fuel cell body is formed by sandwiching an electrolyte made of molten carbonate between a cathode and an anode, and the fuel cell body is sealed in a pressure vessel filled with nitrogen gas. By supplying an oxidizing gas to the cathode and a fuel gas to the anode, an electrochemical reaction is caused inside the fuel cell body to generate electric power.
【０００４】そして、上記燃料電池は、停止時には、カ
ソードとアノードの内部に窒素ガスを充満させておき、
起動する時に、カソードとアノードへ窒素ガスを更に供
給すると共に、起動用加熱器などを用いて窒素ガスを昇
温し、カソードとアノードに高温になって膨張した窒素
ガスを送り、その後大気へ放出させることによって、先
ず、燃料電池本体を大気圧で炭酸塩が溶融する温度まで
上げ、次に、カソードとアノードから大気へ放出される
高温の窒素ガスの流れを絞ることによって、電池性能が
良くなるように燃料電池本体内部の圧力を大気圧よりも
若干高い圧力まで上げ（これに伴って圧力容器内部の圧
力も上げる）、しかる後に、カソードとアノードへ供給
される窒素ガスをそれぞれ酸化剤ガスと燃料ガスに切り
換えることによって、運転を開始するようにしていた。When the fuel cell is stopped, the inside of the cathode and the anode is filled with nitrogen gas.
At startup, nitrogen gas is further supplied to the cathode and anode, and the temperature of the nitrogen gas is raised using a heater for startup, and the high-temperature expanded nitrogen gas is sent to the cathode and anode, and then released to the atmosphere. First, the fuel cell body is raised to a temperature at which the carbonate melts at atmospheric pressure, and then the flow of the high-temperature nitrogen gas released from the cathode and the anode to the atmosphere is reduced, thereby improving the cell performance. As described above, the pressure inside the fuel cell main body is increased to a pressure slightly higher than the atmospheric pressure (the pressure inside the pressure vessel is also increased), and thereafter, the nitrogen gas supplied to the cathode and the anode is changed to the oxidizing gas, respectively. The operation was started by switching to the fuel gas.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上記の
燃料電池の起動方法には、以下のような問題があった。However, the above-described method of starting the fuel cell has the following problems.
【０００６】即ち、起動時に燃料電池本体や圧力容器の
圧力を上げる際には、燃料電池本体が破壊されないよう
にカソードとアノード間の差圧を制御すること、及び、
圧力容器からガスが洩れないように燃料電池本体と圧力
容器間の差圧を制御することが重要であるが、このよう
な差圧制御は複雑なので、燃料電池本体を昇温した後
に、別個に行っており、そのために燃料電池本体の昇温
時に多量の窒素ガスを大気へ放出することになる。That is, when increasing the pressure of the fuel cell body or the pressure vessel at the time of startup, controlling the pressure difference between the cathode and the anode so that the fuel cell body is not broken;
It is important to control the pressure difference between the fuel cell body and the pressure vessel so that gas does not leak from the pressure vessel.However, such a differential pressure control is complicated, so after the fuel cell body is heated, Therefore, a large amount of nitrogen gas is released to the atmosphere when the temperature of the fuel cell body is raised.
【０００７】本発明は、上述の実情に鑑み、燃料電池本
体の昇温と、昇圧時の差圧制御を同時に行えるようにし
て窒素ガスの使用量を減少し得るようにした燃料電池を
提供することを目的とするものである。The present invention has been made in view of the above circumstances, and provides a fuel cell capable of simultaneously increasing the temperature of the fuel cell main body and controlling the differential pressure at the time of increasing the pressure, thereby reducing the amount of nitrogen gas used. The purpose is to do so.
【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、本発明の請求項１に記載の燃料電池では、酸化剤ガ
ス７が供給され得るカソード３及び燃料ガス１０が供給
され得るアノード４により電解質２を挾持した燃料電池
本体１と、該燃料電池本体１を内装する圧力容器５と、
カソード３に接続された窒素ガス供給管路１８及びカソ
ード用窒素ガス排出弁２９を有する窒素ガス排出路２８
と、アノード４に接続された窒素ガス供給路２２及びア
ノード用窒素ガス排出弁３１を有する窒素ガス排出路３
０と、圧力容器５に接続された窒素ガス供給路２５及び
容器用窒素ガス排出弁３３を有する窒素ガス排出路３２
と、圧力容器５内の圧力を検出する圧力検出器３４と、
圧力容器５内とカソード３との差圧を検出する第１の差
圧検出器３７と、カソード３とアノード４の差圧を検出
する第２の差圧検出器４０と、圧力検出器３４からの検
出信号３５に基づき容器用窒素ガス排出弁３３の開度を
調整し得る圧力コントローラ３６と、第１の差圧検出器
３７からの検出信号３８に基づきカソード用窒素ガス排
出弁２９の開度を調整し得る第１の差圧コントローラ３
９と、第２の差圧検出器４０からの検出信号４１に基づ
きアノード用窒素ガス排出弁３１の開度を調整し得る第
２の差圧コントローラ４２とを備えている。 また、本発
明の請求項２に記載の燃料電池では、酸化剤ガス７が供
給され得るカソード３及び燃料ガス１０が供給され得る
アノード４により電解質２を挾持した燃料電池本体１
と、該燃料電池本体１を内装する圧力容器５と、カソー
ド３に接続された窒素ガス供給管路１８及びカソード用
窒素ガス排出弁２９を有する窒素ガス排出路２８と、ア
ノード４に接続された窒素ガス供給路２２及びアノード
用窒素ガス排出弁３１を有する窒素ガス排出路３０と、
圧力容器５に接続された窒素ガス供給路２５及び容器用
窒素ガス排出弁３３を有する窒素ガス排出路３２と、圧
力容器５内の圧力を検出する圧力検出器３４と、圧力容
器５内とカソード３との差圧を検出する第１の差圧検出
器３７と、カソード３とアノード４の差圧を検出する第
２の差圧検出器４０と、圧力検出器３４からの検出信号
３５に基づき容器用窒素ガス排出弁３３の開度を調整し
得る圧力コントローラ３６と、第１の差圧検出器３７か
らの検出信号３８に基づきカソード用窒素ガス排出弁２
９あ るいは容器用窒素ガス排出弁３３の開度を調整し得
る第１の差圧コントローラ３９と、第２の差圧検出器４
０からの検出信号４１に基づきアノード用窒素ガス排出
弁３１の開度を調整し得る第２の差圧コントローラ４２
とを備え、圧力コントローラ３６が容器用窒素ガス排出
弁３３の開度を調整し且つ第１の差圧コントローラ３９
がカソード用窒素ガス排出弁２９の開度を調整する状
態、あるいは第１の差圧コントローラ３９が容器用窒素
ガス排出弁３３の開度を調整する状態を択一的に設定し
得るスイッチ４６，４７を設けている。 Means for Solving the Problems To achieve the above object,
Therefore, in the fuel cell according to claim 1 of the present invention, the oxidant gas
The cathode 3 and the fuel gas 10 to which the gas 7 can be supplied are supplied.
Fuel cell having an electrolyte 2 sandwiched between anodes 4
A body 1, a pressure vessel 5 containing the fuel cell body 1,
Nitrogen gas supply line 18 connected to cathode 3 and cathode
Gas discharge passage 28 having nitrogen gas discharge valve 29
And a nitrogen gas supply path 22 connected to the anode 4 and
Nitrogen gas discharge path 3 having node nitrogen gas discharge valve 31
0, a nitrogen gas supply path 25 connected to the pressure vessel 5 and
Nitrogen gas discharge path 32 having container nitrogen gas discharge valve 33
A pressure detector 34 for detecting the pressure in the pressure vessel 5,
First difference for detecting a pressure difference between the inside of the pressure vessel 5 and the cathode 3
Pressure detector 37 and detects the differential pressure between cathode 3 and anode 4
The second differential pressure detector 40 and the pressure detector 34
The opening degree of the container nitrogen gas discharge valve 33 is determined based on the output signal 35.
Adjustable pressure controller 36 and first differential pressure detector
Based on the detection signal 38 from 37, the nitrogen gas for the cathode is exhausted.
First differential pressure controller 3 capable of adjusting opening of outlet valve 29
9 and a detection signal 41 from the second differential pressure detector 40.
To adjust the opening degree of the anode nitrogen gas discharge valve 31
And a second differential pressure controller 42. In addition,
In the fuel cell according to claim 2, the oxidizing gas 7 is supplied.
Cathode 3 and fuel gas 10 that can be supplied can be supplied
Fuel cell body 1 having electrolyte 2 sandwiched by anode 4
A pressure vessel 5 containing the fuel cell main body 1;
Gas supply line 18 connected to cathode 3 and cathode
A nitrogen gas discharge passage 28 having a nitrogen gas discharge valve 29;
Nitrogen gas supply path 22 and anode connected to node 4
A nitrogen gas discharge passage 30 having a nitrogen gas discharge valve 31 for use;
Nitrogen gas supply path 25 connected to pressure vessel 5 and for vessel
A nitrogen gas discharge passage 32 having a nitrogen gas discharge valve 33;
A pressure detector 34 for detecting the pressure in the power container 5,
Differential pressure detection for detecting the differential pressure between the inside of the vessel 5 and the cathode 3
Detector 37 and a second pressure detector for detecting a pressure difference between the cathode 3 and the anode 4.
2 differential pressure detector 40 and detection signals from the pressure detector 34
The opening of the container nitrogen gas discharge valve 33 is adjusted based on 35.
To obtain the pressure controller 36 and the first differential pressure detector 37
Based on the detection signal 38, the cathode nitrogen gas discharge valve 2
9 Ah Rui adjusts the opening of the container nitrogen gas exhaust valve 33 to give
A first differential pressure controller 39 and a second differential pressure detector 4
Anode nitrogen gas discharge based on detection signal 41 from 0
Second differential pressure controller 42 capable of adjusting the opening of valve 31
And the pressure controller 36 discharges nitrogen gas for the container.
The opening of the valve 33 is adjusted and the first differential pressure controller 39
Adjusts the opening of the cathode nitrogen gas discharge valve 29
State or the first differential pressure controller 39
The state of adjusting the opening of the gas discharge valve 33 is set alternatively.
The switches 46 and 47 are provided.
【０００９】[0009]
【作用】本発明の燃料電池においては、起動開始時の燃
料電池本体１の加熱により、圧力容器５内部の圧力が所
定値に達すると、圧力検出器３４からの検出信号３５に
基づき圧力コントローラ３６が窒素ガス排出弁３３の開
度を調整して、圧力容器５内部の圧力を所定値に保つ。
また、圧力容器５とカソード３の差圧が所定の範囲より
も大きくなると、第１の差圧検出器３７からの検出信号
３８に基づき第１の差圧コントローラ３９が窒素ガス排
出弁２９の開度を調整して、圧力容器５とカソード３の
差圧を所定の範囲内に保つ。 同様に、カソード３とアノ
ード４の差圧が所定の範囲よりも大きくなると、第２の
差圧検出器４０からの検出信号４１に第２の差圧コント
ローラ４２が窒素ガス排出弁３１の開度を調整して、カ
ソード３とアノード４の差圧を所定の範囲内に保つ。 According to the fuel cell of the present invention, the fuel at the start of startup is
Due to the heating of the fuel cell main body 1, the pressure inside the pressure vessel 5 is reduced.
When the constant value is reached, the detection signal 35 from the pressure detector 34
The pressure controller 36 opens the nitrogen gas discharge valve 33 based on
The pressure is adjusted to maintain the pressure inside the pressure vessel 5 at a predetermined value.
Further, the pressure difference between the pressure vessel 5 and the cathode 3 is out of a predetermined range.
Also increases, the detection signal from the first differential pressure detector 37
38, the first differential pressure controller 39 discharges nitrogen gas.
The opening degree of the outlet valve 29 is adjusted to connect the pressure vessel 5 and the cathode 3 with each other.
The differential pressure is kept within a predetermined range. Similarly, the cathode 3 and the anode
When the pressure difference of the mode 4 becomes larger than the predetermined range, the second
The detection signal 41 from the differential pressure detector 40 is applied to the second differential pressure controller.
The roller 42 adjusts the opening of the nitrogen gas discharge valve 31 to
The pressure difference between the sword 3 and the anode 4 is kept within a predetermined range.
【００１０】[0010]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。Embodiments of the present invention will be described below with reference to the drawings.
【００１１】図１は本発明の第一の実施例である。FIG. 1 shows a first embodiment of the present invention.
【００１２】図中１は溶融炭酸塩からなる電解質２をカ
ソード３とアノード４で挟んで形成した燃料電池本体、
５は燃料電池本体１を封入する圧力容器、６はカソード
３に酸化剤ガス７を供給する酸化剤ガス供給路、８はカ
ソード３からカソード排ガス４８を排出するカソード排
ガス排出路、９はアノード４に燃料ガス１０を供給する
燃料ガス供給路、１１はアノード４からアノード排ガス
４９を排出するアノード排ガス排出路、１２，１３，１
４，１５は酸化剤ガス供給路６及びカソード排ガス排出
路８及び燃料ガス供給路９並びにアノード排ガス排出路
１１に設けられた開閉弁、１６，１７はカソード排ガス
排出路８及びアノード排ガス排出路１１に設けられ運転
時に使用する差圧調整弁である。In FIG. 1, reference numeral 1 denotes a fuel cell body in which an electrolyte 2 made of a molten carbonate is sandwiched between a cathode 3 and an anode 4;
5 is a pressure vessel for enclosing the fuel cell body 1, 6 is an oxidant gas supply path for supplying an oxidant gas 7 to the cathode 3, 8 is a cathode exhaust gas exhaust path for discharging cathode exhaust gas 48 from the cathode 3, and 9 is an anode 4 A fuel gas supply path for supplying fuel gas 10 to the fuel cell, an anode exhaust gas discharge path 11 for discharging anode exhaust gas 49 from the anode 4, 12, 13, 1
Reference numerals 4 and 15 denote on-off valves provided in the oxidizing gas supply path 6, the cathode exhaust gas discharge path 8 and the fuel gas supply path 9, and the anode exhaust gas discharge path 11, and 16, 17 denote the cathode exhaust gas discharge path 8 and the anode exhaust gas discharge path 11. Is a differential pressure regulating valve used in operation.
【００１３】又、１８は酸化剤ガス供給路６の開閉弁１
２出側に接続された窒素ガス１９を供給するための窒素
ガス供給路、２０は窒素ガス供給路１８の途中に設けら
れた窒素ガス供給弁、２１は窒素ガス供給弁２０の出側
に設けられたオリフィスである。Reference numeral 18 denotes an on-off valve 1 for the oxidizing gas supply passage 6.
2 A nitrogen gas supply passage connected to the outlet side for supplying nitrogen gas 19, 20 is a nitrogen gas supply valve provided in the middle of the nitrogen gas supply passage 18, and 21 is provided on the outlet side of the nitrogen gas supply valve 20. Orifice.
【００１４】２２は燃料ガス供給路９の開閉弁１４出側
に接続された窒素ガス供給路、２３は窒素ガス供給路２
２の途中に設けられた窒素ガス供給弁、２４は窒素ガス
供給弁２３の出側に設けられたオリフィスである。Reference numeral 22 denotes a nitrogen gas supply path connected to the fuel gas supply path 9 on the outlet side of the on-off valve 14, and 23 denotes a nitrogen gas supply path 2.
A nitrogen gas supply valve 24 provided in the middle of 2 is an orifice provided on the outlet side of the nitrogen gas supply valve 23.
【００１５】２５は圧力容器５に接続された窒素ガス供
給路、２６は窒素ガス供給路２５の途中に設けられた窒
素ガス供給弁、２７は窒素ガス供給弁２６の出側に設け
られたオリフィスである。Reference numeral 25 denotes a nitrogen gas supply passage connected to the pressure vessel 5, reference numeral 26 denotes a nitrogen gas supply valve provided in the middle of the nitrogen gas supply passage 25, and reference numeral 27 denotes an orifice provided on the outlet side of the nitrogen gas supply valve 26. It is.
【００１６】２８はカソード排ガス排出路８の差圧調整
弁１６入側に接続された窒素ガス排出路、２９は窒素ガ
ス排出路２８の途中に設けられた窒素ガス排出弁であ
る。Reference numeral 28 denotes a nitrogen gas discharge path connected to the inlet side of the differential pressure regulating valve 16 of the cathode exhaust gas discharge path 8, and reference numeral 29 denotes a nitrogen gas discharge valve provided in the middle of the nitrogen gas discharge path 28.
【００１７】３０はアノード排ガス排出路１１の差圧調
整弁１７入側に接続された窒素ガス排出路、３１は窒素
ガス排出路３０の途中に設けられた窒素ガス排出弁であ
る。Reference numeral 30 denotes a nitrogen gas discharge path connected to the anode exhaust gas discharge path 11 on the inlet side of the differential pressure regulating valve 17, and reference numeral 31 denotes a nitrogen gas discharge valve provided in the middle of the nitrogen gas discharge path 30.
【００１８】３２は圧力容器５に接続された窒素ガス排
出路、３３は窒素ガス排出路３２の途中に設けられた窒
素ガス排出弁である。Reference numeral 32 denotes a nitrogen gas discharge passage connected to the pressure vessel 5, and reference numeral 33 denotes a nitrogen gas discharge valve provided in the middle of the nitrogen gas discharge passage 32.
【００１９】そして、圧力容器５に圧力検出器３４を設
け、圧力検出器３４からの検出信号３５に基づいて窒素
ガス排出弁３３の開度を調整する圧力コントローラ３６
を設ける。A pressure detector 34 is provided in the pressure vessel 5 and a pressure controller 36 for adjusting the opening of the nitrogen gas discharge valve 33 based on a detection signal 35 from the pressure detector 34.
Is provided.
【００２０】圧力容器５とカソード３との間に差圧検出
器３７を設け、差圧検出器３７からの検出信号３８に基
づいて窒素ガス排出弁２９の開度を調整する差圧コント
ローラ３９を設ける。A differential pressure detector 37 is provided between the pressure vessel 5 and the cathode 3, and a differential pressure controller 39 for adjusting the opening of the nitrogen gas discharge valve 29 based on a detection signal 38 from the differential pressure detector 37. Provide.
【００２１】カソード３とアノード４間に差圧検出器４
０を設け、差圧検出器４０からの検出信号４１に基づい
て窒素ガス排出弁３１の開度を調整する差圧コントロー
ラ４２を設ける。A differential pressure detector 4 is provided between the cathode 3 and the anode 4.
0, and a differential pressure controller 42 for adjusting the opening of the nitrogen gas discharge valve 31 based on the detection signal 41 from the differential pressure detector 40 is provided.
【００２２】尚、４３，４４，４５は圧力コントローラ
３６及び差圧コントローラ３９，４２から窒素ガス排出
弁３３，２９，３１のそれぞれへ送られる開度調整指令
である。Reference numerals 43, 44 and 45 denote opening adjustment commands sent from the pressure controller 36 and the differential pressure controllers 39 and 42 to the nitrogen gas discharge valves 33, 29 and 31, respectively.
【００２３】次に、作動について説明する。Next, the operation will be described.
【００２４】燃料電池の運転時には、開閉弁１２，１
３，１４，１５を開き、酸化剤ガス７を酸化剤ガス供給
路６を介してカソード３へ供給すると共に、燃料ガス１
０を燃料ガス供給路９を介してアノード４へ供給するこ
とにより、燃料電池本体１内部で電気化学反応を起こさ
せて発電を行い、反応後のカソード排ガス４８をカソー
ド３からカソード排ガス排出路８を介して外部へ排出す
ると共に、反応後のアノード排ガス４９をアノード４か
らアノード排ガス排出路１１を介して外部へ排出する。During operation of the fuel cell, the on-off valves 12, 1
3, 14 and 15, the oxidizing gas 7 is supplied to the cathode 3 through the oxidizing gas supply path 6, and the fuel gas 1 is opened.
0 is supplied to the anode 4 through the fuel gas supply passage 9 to cause an electrochemical reaction inside the fuel cell main body 1 to generate power, and the reacted cathode exhaust gas 48 is discharged from the cathode 3 to the cathode exhaust gas discharge passage 8. The anode exhaust gas 49 after the reaction is exhausted from the anode 4 to the outside via the anode exhaust gas exhaust passage 11.
【００２５】この際、窒素ガス供給路１８に設けられた
窒素ガス供給弁２０、及び、窒素ガス供給路２２に設け
られた窒素ガス供給弁２３、及び、窒素ガス排出路２８
に設けられた窒素ガス排出弁２９、並びに、窒素ガス排
出路３０に設けられた窒素ガス排出弁３１は閉止してお
く。At this time, a nitrogen gas supply valve 20 provided in the nitrogen gas supply path 18, a nitrogen gas supply valve 23 provided in the nitrogen gas supply path 22, and a nitrogen gas discharge path 28
And the nitrogen gas discharge valve 31 provided in the nitrogen gas discharge path 30 are closed.
【００２６】又、窒素ガス供給弁２６を開いて窒素ガス
供給路２５から圧力容器５内部へ窒素ガス１９を供給す
ると共に、圧力検出器３４を用いて圧力容器５内部の圧
力を検出し、圧力検出器３４からの検出信号３５に基づ
いて圧力コントローラ３６が窒素ガス排出弁３３へ開度
調整指令４３を送って、窒素ガス排出弁３３の開度を調
整し、窒素ガス排出路３２を介して圧力容器５から排出
される窒素ガス１９の量を調整することにより、圧力容
器５内部の圧力を所定の圧力に保持させるようにする。The nitrogen gas supply valve 26 is opened to supply the nitrogen gas 19 from the nitrogen gas supply passage 25 to the inside of the pressure vessel 5, and the pressure inside the pressure vessel 5 is detected by using the pressure detector 34. Based on the detection signal 35 from the detector 34, the pressure controller 36 sends an opening adjustment command 43 to the nitrogen gas discharge valve 33 to adjust the opening of the nitrogen gas discharge valve 33, and through the nitrogen gas discharge path 32 By adjusting the amount of the nitrogen gas 19 discharged from the pressure vessel 5, the pressure inside the pressure vessel 5 is maintained at a predetermined pressure.
【００２７】燃料電池の停止時には、開閉弁１２，１
３，１４，１５を閉じて、燃料電池本体１に酸化剤ガス
７及び燃料ガス供給路９が供給されないようにすると共
に、窒素ガス排出弁２９，３１，３３を開け、窒素ガス
供給弁２０，２３，２６を開け、窒素ガス供給路１８，
２２，２５から燃料電池本体１及び圧力容器５内部へ常
温の窒素ガス１９を大気圧と等しい圧力で供給した上で
燃料電池本体１が冷却した後、窒素ガス供給弁２０，２
３，２６を閉じ窒素ガス排出弁２９，３１，３１を閉じ
て、窒素ガス１９を封入しておく。When the fuel cell is stopped, the on-off valves 12, 1
3, 14, 15 are closed so that the oxidizing gas 7 and the fuel gas supply passage 9 are not supplied to the fuel cell main body 1, and the nitrogen gas discharge valves 29, 31, 33 are opened, and the nitrogen gas supply valves 20, 23, 26 are opened, and the nitrogen gas supply path 18,
After supplying the normal temperature nitrogen gas 19 to the inside of the fuel cell main body 1 and the pressure vessel 5 at a pressure equal to the atmospheric pressure from the fuel cell main body 1 and cooling the fuel cell main body 1, the nitrogen gas supply valves 20,
3 and 26 are closed and the nitrogen gas discharge valves 29, 31, and 31 are closed, and the nitrogen gas 19 is sealed.
【００２８】そして、燃料電池の起動開始時には、上記
停止時の状態から窒素ガス供給弁２０，２３を開けて、
窒素ガス供給路１８，２２からカソード３とアノード４
とへ窒素ガス１９を供給する。When the fuel cell starts to be started, the nitrogen gas supply valves 20, 23 are opened from the state at the time of the stop, and
Cathode 3 and anode 4 from nitrogen gas supply paths 18 and 22
And a nitrogen gas 19 is supplied.
【００２９】カソード３の出側と入側の間には、特に図
示しないが起動用加熱器を備えた循環流路が接続されて
おり、カソード３に供給された窒素ガス１９が循環流路
を循環しつつ起動用加熱器で昇温されて、カソード３を
加熱し、カソード３からの伝熱によってアノード４も加
熱される。Between the outlet side and the inlet side of the cathode 3, a circulation channel (not shown) provided with a start-up heater is connected, and nitrogen gas 19 supplied to the cathode 3 flows through the circulation channel. The temperature is raised by the heater for starting while circulating, and the cathode 3 is heated, and the anode 4 is also heated by the heat transfer from the cathode 3.
【００３０】或いは、燃料電池本体１の内部に電気ヒー
タを設けて、カソード３とアノード４を加熱するように
しても良い。Alternatively, an electric heater may be provided inside the fuel cell main body 1 to heat the cathode 3 and the anode 4.
【００３１】すると、カソード３及びアノード４内部の
温度が、炭酸塩が溶融する温度まで上げられ、運転可能
な温度とされる。Then, the temperature inside the cathode 3 and the anode 4 is raised to a temperature at which the carbonate melts, and is set to an operable temperature.
【００３２】そして、カソード３とアノード４との温度
上昇に伴って、圧力容器５内部に封入された窒素ガス１
９の温度が上って体積膨張が起り、圧力容器５内部の圧
力が上昇する。As the temperature of the cathode 3 and the anode 4 rises, the nitrogen gas 1 sealed in the pressure vessel 5
The temperature of 9 rises and volume expansion occurs, and the pressure inside the pressure vessel 5 rises.
【００３３】この圧力容器５内部の圧力上昇を圧力検出
器３４が検出して、圧力容器５内部の圧力が所定の圧力
に達した時に、検出信号３５を圧力コントローラ３６へ
送り、圧力コントローラ３６から窒素ガス排出弁３３へ
開度調整指令４３を送って、窒素ガス排出弁３３を開閉
させ、圧力容器５内部の圧力を前記所定の圧力に保たせ
る。The pressure detector 34 detects the rise in the pressure inside the pressure vessel 5 and sends a detection signal 35 to the pressure controller 36 when the pressure inside the pressure vessel 5 reaches a predetermined pressure. An opening adjustment command 43 is sent to the nitrogen gas discharge valve 33 to open and close the nitrogen gas discharge valve 33 to maintain the pressure inside the pressure vessel 5 at the predetermined pressure.
【００３４】この間、差圧検出器３７は圧力容器５とカ
ソード３との差圧を検出しており、両者の差圧が所定の
範囲よりも大きくなった時に、差圧コントローラ３９へ
検出信号３８を送って、差圧コントローラ３９からの開
度調整指令４４により、差圧が所定の範囲となるよう窒
素ガス排出弁２９の開度を調整させる。During this time, the differential pressure detector 37 detects the differential pressure between the pressure vessel 5 and the cathode 3, and when the differential pressure between them becomes larger than a predetermined range, a detection signal 38 is sent to the differential pressure controller 39. And the opening degree of the nitrogen gas discharge valve 29 is adjusted by the opening degree adjustment command 44 from the differential pressure controller 39 so that the differential pressure falls within a predetermined range.
【００３５】同様に、差圧検出器４０はカソード３とア
ノード４との差圧を検出しており、両者の差圧が所定の
範囲よりも大きくなった時に、差圧コントローラ４２へ
検出信号４１を送って、差圧コントローラ４２からの開
度調整指令４５により、差圧が所定の範囲となるよう窒
素ガス排出弁３１の開度を調整させる。Similarly, the differential pressure detector 40 detects the differential pressure between the cathode 3 and the anode 4, and when the differential pressure between the two exceeds a predetermined range, a detection signal 41 is sent to the differential pressure controller 42. To adjust the opening of the nitrogen gas discharge valve 31 in accordance with the opening adjustment command 45 from the differential pressure controller 42 so that the differential pressure falls within a predetermined range.
【００３６】これによって、燃料電池本体１の昇温と、
燃料電池本体１の昇圧時の差圧制御とを同時に行うこと
ができるようになり、その分、窒素ガス１９使用量を減
少することができる。As a result, the temperature of the fuel cell main body 1 rises,
Differential pressure control when the fuel cell main body 1 is boosted can be performed simultaneously, and the amount of nitrogen gas 19 used can be reduced accordingly.
【００３７】図２は、本発明の第二の実施例であり、ス
イッチ４６，４７を設けて、差圧コントローラ３９から
の開度調整指令４４により窒素ガス排出弁３３の開度を
調整するように切り換え可能として、カソード３側を閉
じ切りにし、圧力容器５側で差圧制御を行うようにした
ものである。FIG. 2 shows a second embodiment of the present invention, in which switches 46 and 47 are provided to adjust the opening of the nitrogen gas discharge valve 33 in accordance with the opening adjustment command 44 from the differential pressure controller 39. , The cathode 3 side is closed, and the pressure difference control is performed on the pressure vessel 5 side.
【００３８】それ以外は、前記実施例と同様の構成を備
えており、同様の作用・効果を得ることができる。Other than that, the configuration is the same as that of the above-described embodiment, and the same operation and effect can be obtained.
【００３９】尚、本発明は、上述の実施例にのみ限定さ
れるものではなく、本発明の要旨を逸脱しない範囲内に
おいて種々変更を加え得ることは勿論である。It should be noted that the present invention is not limited to the above-described embodiment, and it is needless to say that various changes can be made without departing from the scope of the present invention.
【００４０】[0040]
【発明の効果】以上説明したように、本発明の燃料電池
によれば、燃料電池本体の昇温と、昇圧時の差圧制御を
同時に行うようにしたので窒素ガスの使用量を減少し得
るという優れた効果を奏し得る。As described above, according to the fuel cell of the present invention, the temperature rise of the fuel cell main body and the differential pressure control at the time of pressure increase are performed simultaneously, so that the amount of nitrogen gas used can be reduced. This can provide an excellent effect.
【図１】本発明の第一の実施例の概略系統図である。FIG. 1 is a schematic system diagram of a first embodiment of the present invention.
【図２】本発明の第二の実施例の概略系統図である。FIG. 2 is a schematic system diagram of a second embodiment of the present invention.
１ 燃料電池本体 ２ 電解質 ３ カソード ４ アノード ５ 圧力容器 ７ 酸化剤ガス １０ 燃料ガス １８，２２，２５ 窒素ガス供給路 ２８，３０，３２ 窒素ガス排出路２９ カソード用窒素ガス排出弁 ３１ アノード用窒素ガス排出弁 ３３ 容器用窒素ガス排出弁 ３４ 圧力検出器 ３５ 検出信号 ３６ 圧力コントローラ ３７ 第１の差圧検出器 ３８ 検出信号 ３９ 第１の差圧コントローラ ４０ 第２の差圧検出器 ４１ 検出信号 ４２ 第２の差圧コントローラ ４６，４７ スイッチ DESCRIPTION OF SYMBOLS 1 Fuel cell main body 2 Electrolyte 3 Cathode 4 Anode 5 Pressure vessel 7 Oxidizing gas 10 Fuel gas 18, 22, 25 Nitrogen gas supply path 28, 30, 32 Nitrogen gas discharge path 29 Nitrogen gas discharge valve for cathode 31 Nitrogen gas for anode discharge valve 33 differences for nitrogen gas exhaust valve 34 pressure detector 35 detects signal 36 the pressure controller 37 first container pressure detector 38 detects signal 39 first differential pressure controller 40 the second pressure difference detector 41 detects signal 42 first 2 differential pressure controllers 46 and 47 switches
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) H01M 8/00 - 8/24 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 7 , DB name) H01M 8/00-8/24
Claims (2)
及び燃料ガス１０が供給され得るアノード４により電解
質２を挾持した燃料電池本体１と、該燃料電池本体１を
内装する圧力容器５と、カソード３に接続された窒素ガ
ス供給管路１８及びカソード用窒素ガス排出弁２９を有
する窒素ガス排出路２８と、アノード４に接続された窒
素ガス供給路２２及びアノード用窒素ガス排出弁３１を
有する窒素ガス排出路３０と、圧力容器５に接続された
窒素ガス供給路２５及び容器用窒素ガス排出弁３３を有
する窒素ガス排出路３２と、圧力容器５内の圧力を検出
する圧力検出器３４と、圧力容器５内とカソード３との
差圧を検出する第１の差圧検出器３７と、カソード３と
アノード４の差圧を検出する第２の差圧検出器４０と、
圧力検出器３４からの検出信号３５に基づき容器用窒素
ガス排出弁３３の開度を調整し得る圧力コントローラ３
６と、第１の差圧検出器３７からの検出信号３８に基づ
きカソード用窒素ガス排出弁２９の開度を調整し得る第
１の差圧コントローラ３９と、第２の差圧検出器４０か
らの検出信号４１に基づきアノード用窒素ガス排出弁３
１の開度を調整し得る第２の差圧コントローラ４２とを
備えてなることを特徴とする燃料電池。 1. A cathode 3 to which an oxidizing gas 7 can be supplied.
And an anode 4 to which fuel gas 10 can be supplied
A fuel cell body 1 sandwiching a material 2 and a fuel cell body 1
A pressure vessel 5 to be installed and a nitrogen gas connected to the cathode 3
Supply line 18 and nitrogen gas discharge valve 29 for cathode
Nitrogen gas discharge passage 28 to be connected to nitrogen gas connected to anode 4.
The raw gas supply passage 22 and the anode nitrogen gas discharge valve 31
Nitrogen gas discharge path 30 and the pressure vessel 5
Equipped with nitrogen gas supply path 25 and container nitrogen gas discharge valve 33
Of the nitrogen gas discharge path 32 and the pressure in the pressure vessel 5
Between the pressure detector 34 and the inside of the pressure vessel 5 and the cathode 3
A first differential pressure detector 37 for detecting a differential pressure;
A second differential pressure detector 40 for detecting a differential pressure of the anode 4,
Based on the detection signal 35 from the pressure detector 34, the container nitrogen
Pressure controller 3 capable of adjusting opening of gas discharge valve 33
6 and a detection signal 38 from the first differential pressure detector 37.
The opening degree of the nitrogen gas discharge valve 29 for the cathode can be adjusted.
The first differential pressure controller 39 and the second differential pressure detector 40
Based on the detection signal 41, the nitrogen gas discharge valve 3 for the anode.
And a second differential pressure controller 42 capable of adjusting the opening degree
A fuel cell, comprising:
及び燃料ガス１０が供給され得るアノード４により電解
質２を挾持した燃料電池本体１と、該燃料電池本体１を
内装する圧力容器５と、カソード３に接続された窒素ガ
ス供給管路１８及びカソード用窒素ガス排出弁２９を有
する窒素ガス排出路２８と、アノード４に接続された窒
素ガス供給路２２及びアノード用窒素ガス排出弁３１を
有する窒素ガス排出路３０と、圧力容器５に接続された
窒素ガス供給路２５及び容器用窒素ガス排出弁３３を有
する窒素ガス排出路３２と、圧力容器５内の圧力を検出
する圧力検出器３４と、圧力容器５内とカソード３との
差圧を検出する第１の差圧検出器３７と、カソード３と
アノード４の差圧を検出する第２の差圧検出器４０と、
圧力検出器３４からの検出信号３５に基づき容器用窒素
ガス排出弁３３の開度を調整し得る圧力コントローラ３
６と、第１の差圧検出器３７からの検出信号３８に基づ
きカソード用窒素ガス排出弁２９あるいは容器用窒素ガ
ス排出弁３３の開度を調整し得る第１の差圧コントロー
ラ３９と、第２の差圧検出器４０か らの検出信号４１に
基づきアノード用窒素ガス排出弁３１の開度を調整し得
る第２の差圧コントローラ４２とを備え、圧力コントロ
ーラ３６が容器用窒素ガス排出弁３３の開度を調整し且
つ第１の差圧コントローラ３９がカソード用窒素ガス排
出弁２９の開度を調整する状態、あるいは第１の差圧コ
ントローラ３９が容器用窒素ガス排出弁３３の開度を調
整する状態を択一的に設定し得るスイッチ４６，４７を
設けたことを特徴とする燃料電池。 2. A cathode 3 to which an oxidizing gas 7 can be supplied.
And an anode 4 to which fuel gas 10 can be supplied
A fuel cell body 1 sandwiching a material 2 and a fuel cell body 1
A pressure vessel 5 to be installed and a nitrogen gas connected to the cathode 3
Supply line 18 and nitrogen gas discharge valve 29 for cathode
Nitrogen gas discharge passage 28 to be connected to nitrogen gas connected to anode 4.
The raw gas supply passage 22 and the anode nitrogen gas discharge valve 31
Nitrogen gas discharge path 30 and the pressure vessel 5
Equipped with nitrogen gas supply path 25 and container nitrogen gas discharge valve 33
Of the nitrogen gas discharge path 32 and the pressure in the pressure vessel 5
Between the pressure detector 34 and the inside of the pressure vessel 5 and the cathode 3
A first differential pressure detector 37 for detecting a differential pressure;
A second differential pressure detector 40 for detecting a differential pressure of the anode 4,
Based on the detection signal 35 from the pressure detector 34, the container nitrogen
Pressure controller 3 capable of adjusting opening of gas discharge valve 33
6 and a detection signal 38 from the first differential pressure detector 37.
Nitrogen gas discharge valve 29 for cathode or nitrogen gas for container
Differential pressure control that can adjust the opening of the exhaust valve 33
And La 39, the detection signal 41 of the second pressure difference detector 40 or al
The opening of the nitrogen gas discharge valve 31 for the anode can be adjusted based on the
And a second differential pressure controller 42,
Roller 36 adjusts the opening of the container nitrogen gas discharge valve 33 and
The first differential pressure controller 39 discharges the cathode nitrogen gas.
The state of adjusting the opening of the outlet valve 29 or the first differential pressure
Controller 39 adjusts the opening of the container nitrogen gas discharge valve 33.
Switches 46 and 47, which can alternatively set the adjustment state,
A fuel cell, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03298036A JP3104336B2 (en) | 1991-10-18 | 1991-10-18 | Fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03298036A JP3104336B2 (en) | 1991-10-18 | 1991-10-18 | Fuel cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05114413A JPH05114413A (en) | 1993-05-07 |
| JP3104336B2 true JP3104336B2 (en) | 2000-10-30 |
Family
ID=17854295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03298036A Expired - Fee Related JP3104336B2 (en) | 1991-10-18 | 1991-10-18 | Fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3104336B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015083259A (en) * | 2015-02-04 | 2015-04-30 | 株式会社三洋物産 | Game machine |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5040411B2 (en) * | 2007-04-18 | 2012-10-03 | トヨタ自動車株式会社 | Fuel cell system |
| JP2010146934A (en) * | 2008-12-22 | 2010-07-01 | Mitsubishi Heavy Ind Ltd | Solid oxide fuel battery, and solid oxide fuel battery system |
-
1991
- 1991-10-18 JP JP03298036A patent/JP3104336B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015083259A (en) * | 2015-02-04 | 2015-04-30 | 株式会社三洋物産 | Game machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05114413A (en) | 1993-05-07 |
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