JPH0752648B2 - Gas replacement method for fuel cell device - Google Patents
Gas replacement method for fuel cell deviceInfo
- Publication number
- JPH0752648B2 JPH0752648B2 JP59099211A JP9921184A JPH0752648B2 JP H0752648 B2 JPH0752648 B2 JP H0752648B2 JP 59099211 A JP59099211 A JP 59099211A JP 9921184 A JP9921184 A JP 9921184A JP H0752648 B2 JPH0752648 B2 JP H0752648B2
- Authority
- JP
- Japan
- Prior art keywords
- fuel cell
- flow rate
- gas
- pressure
- control valve
- 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 - Lifetime
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
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
- H01M8/04104—Regulation of differential pressures
-
- 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)
Description
【発明の詳細な説明】 〔発明の技術分野〕 この発明は、燃料電池本体へ反応ガス及び不活性ガスを
供給する燃料電池装置のガス置換方法に関するものであ
る。Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to a gas replacement method for a fuel cell device for supplying a reaction gas and an inert gas to a fuel cell body.
第１図は従来の一般的な燃料電池装置の燃料電池本体を
示し、燃料極（１）、酸化剤極（２）、及びこれらを入
れる容器（３）で構成されており、燃料が外部にもれな
いように、燃料極圧力、酸化剤極圧力、容器内圧力の順
に高くなつている。しかし構造上、容器内圧力と各極の
圧力の差（差力）は数100mmAq以下にしなければならな
い。FIG. 1 shows a fuel cell body of a conventional general fuel cell device, which is composed of a fuel electrode (1), an oxidant electrode (2), and a container (3) for containing them, and the fuel is externally supplied. In order to prevent leakage, the fuel electrode pressure, the oxidizer electrode pressure, and the container internal pressure increase in this order. However, due to the structure, the difference (pressure difference) between the pressure inside the container and the pressure at each pole must be less than several 100 mmAq.
このような問題を考慮した従来のものとして例えば特開
昭56−114285号公報に示すものがあつた。For example, Japanese Patent Application Laid-Open No. 56-114285 has been proposed as a conventional device taking such a problem into consideration.
第２図において、（４）は燃料電池本体、（５）はこの
燃料電池本体（４）に反応ガスを供給する反応ガス供給
弁、（６）は反応ガスの圧力を調整する反応ガス調圧
器、（７）は不活性ガスを供給する不活性ガス供給弁、
（８）は不活性ガスの圧力を調整する不活性ガス調圧
器、（９）は燃料電池本体（４）に供給された反応ガ
ス、不活性ガスを排出する排出弁である。In FIG. 2, (4) is a fuel cell body, (5) is a reaction gas supply valve for supplying a reaction gas to the fuel cell body (4), and (6) is a reaction gas pressure regulator for adjusting the pressure of the reaction gas. , (7) is an inert gas supply valve for supplying an inert gas,
(8) is an inert gas pressure regulator for adjusting the pressure of the inert gas, and (9) is a discharge valve for discharging the reaction gas and the inert gas supplied to the fuel cell main body (4).
次に動作について説明する。いま、燃料電池本体（４）
に反応ガスが供給されている。即ち、反応ガスは、反応
ガス供給弁（５）を通し、反応ガス調圧器（６）で所定
の圧力にして燃料電池本体（４）に供給され、排出弁
（９）から排出される。この状態で反応ガスを不活性ガ
スに置換するには、反応ガス供給弁（５）を閉じ、同時
に不活性ガス供給弁（７）を開くことによつて行なわれ
る。この時、不活性ガス調圧器（８）の設定を反応ガス
調圧器（６）の設定と同じにしておくことによりガス置
換を行なつた時、燃料電池本体（４）の圧力をほぼ一定
に保つことができるようにしている。Next, the operation will be described. Now, the fuel cell body (4)
The reaction gas is supplied to. That is, the reaction gas is supplied to the fuel cell main body (4) through the reaction gas supply valve (5), has a predetermined pressure by the reaction gas pressure regulator (6), and is discharged from the discharge valve (9). In this state, the reaction gas is replaced with the inert gas by closing the reaction gas supply valve (5) and simultaneously opening the inert gas supply valve (7). At this time, by setting the setting of the inert gas pressure regulator (8) to be the same as that of the reaction gas pressure regulator (6), when gas replacement is performed, the pressure of the fuel cell main body (4) is made substantially constant. I am trying to keep it.
従来の装置は以上のように構成されているので、ガスの
置換を行なう時、反応ガス供給弁（５）の動作と不活性
ガス供給弁（７）の動作時期を一致させることはむづか
しく、また調圧器においていもガスが流れていない時、
すなわち供給弁が閉つている時には調圧能力がないた
め、ガス置換直後には圧力変動が起こり、上述した電池
容器内圧力と燃料極、酸化剤極の差力を許容値以下にお
さえることはむづかしいという欠点があつた。Since the conventional device is configured as described above, it is difficult to match the operation timing of the reaction gas supply valve (5) with the operation timing of the inert gas supply valve (7) when performing gas replacement. Also, when no gas is flowing in the pressure regulator,
That is, when the supply valve is closed, there is no pressure regulation capability, so pressure fluctuations occur immediately after gas replacement, and it is difficult to keep the above-mentioned differential pressure between the battery container pressure and the fuel electrode or oxidizer electrode below the allowable value. There was a drawback.
この発明は上記のような欠点をなくすためのもので、反
応ガス、不活性ガスのそれぞれ流量を調節する流量調節
弁と、燃料電池本体の圧力を調節する圧力調節弁とを設
けることにより、圧力変動を招くことなくガス置換を行
なうことができる燃料電池装置のガス置換方法を提供す
ることを目的としている。The present invention is intended to eliminate the above-mentioned drawbacks, and by providing a flow rate control valve for controlling the flow rate of each of the reaction gas and the inert gas and a pressure control valve for controlling the pressure of the fuel cell main body, An object of the present invention is to provide a gas replacement method for a fuel cell device that can perform gas replacement without causing fluctuations.
以下、この発明の実施例を図について説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第３図において（４）は燃料電池本体、（10）は燃料電
池本体（４）に供給する反応ガスの流量を調節する反応
ガス流量調節弁、（11）は燃料電池本体（４）に供給す
る不活性ガスの流量を調節する不活性ガス流量調節弁、
（12）は反応ガス、不活性ガスの排出側に設けられ、燃
料電池本体（４）の圧力を調節する圧力調節弁である。
また、第４図において、（ａ）は反応ガス流量、（ｂ）
は不活性ガス流量、（ｃ）は電池圧力をそれぞれ示す。In FIG. 3, (4) is the fuel cell main body, (10) is the reaction gas flow rate control valve for adjusting the flow rate of the reaction gas supplied to the fuel cell main body (4), and (11) is the supply to the fuel cell main body (4). Inert gas flow control valve for adjusting the flow rate of the inert gas
Reference numeral (12) is a pressure control valve which is provided on the discharge side of the reaction gas and the inert gas and controls the pressure of the fuel cell body (4).
Further, in FIG. 4, (a) is a reaction gas flow rate, and (b) is
Indicates an inert gas flow rate, and (c) indicates a cell pressure.
いま、反応ガスは流量調節弁（10）で所定の流量に制御
され、燃料電池本体（４）に供給されており、不活性ガ
スは流量調節弁（11）で締め切られ供給されていない。
また、燃料電池本体（４）の圧力は、燃料電池本体
（４）の出口側の圧力調節弁（12）で所定の圧力に制御
されている。反応ガスを不活性ガスで置換する時には、
まず反応ガスを流量調節弁（10）で減少させていき、同
時に不活性ガスを流量調節弁（11）を開くことにより増
加させていく。この時、燃料電池本体（４）の圧力は出
口側の圧力調節弁（12）で常に一定圧力に制御されてい
る。第４図にこの時の流量、圧力の関係を示す。反応ガ
ス流量は第４図（ａ）に示すように減少していき、不活
性ガスは第４図（ｂ）に示すように増加していく。この
時の電池圧力は圧力調節弁（12）で一定に制御されるた
め第４図（ｃ）に示すように変化しない。Now, the reaction gas is supplied to the fuel cell main body (4) by being controlled to a predetermined flow rate by the flow rate control valve (10), and the inert gas is shut off by the flow rate control valve (11) and is not supplied.
Further, the pressure of the fuel cell body (4) is controlled to a predetermined pressure by the pressure control valve (12) on the outlet side of the fuel cell body (4). When replacing the reaction gas with an inert gas,
First, the reaction gas is reduced by the flow rate control valve (10), and at the same time, the inert gas is increased by opening the flow rate control valve (11). At this time, the pressure of the fuel cell main body (4) is constantly controlled to a constant pressure by the pressure control valve (12) on the outlet side. FIG. 4 shows the relationship between the flow rate and the pressure at this time. The reaction gas flow rate decreases as shown in FIG. 4 (a), and the inert gas increases as shown in FIG. 4 (b). At this time, the battery pressure does not change as shown in FIG. 4 (c) because it is controlled to be constant by the pressure control valve (12).
上記説明では反応ガスを不活性ガスに置換する場につい
て説明したが、逆に不活性ガスを反応ガスに置換する場
合についても同様である。また、反応ガス、不活性ガス
を一定の割合で変化させたが、これを燃料電池本体の圧
力変化によつてガスの増減の割合を変えることにより、
さらに安定したガス置換をすることができる。Although the case where the reaction gas is replaced with the inert gas has been described above, the same applies to the case where the inert gas is replaced with the reaction gas. Also, the reaction gas and the inert gas were changed at a constant rate, but by changing the rate of increase and decrease of the gas by changing the pressure of the fuel cell main body,
Further stable gas replacement can be performed.
以上のように、この発明によれば反応ガス、不活性ガス
のそれぞれの流量を調節する流量調節弁と、燃料電池本
体の圧力を調節する圧力調節弁とを設けたので、反応ガ
ス及び不活性ガスの流量変化を同一としてスムーズに連
続的に調節することができ、従ってガス置換時に電池圧
力変化の発生をなくすことができ安定した燃料電池装置
のガス置換方法を得ることができる。As described above, according to the present invention, since the flow rate control valve for controlling the flow rate of each of the reaction gas and the inert gas and the pressure control valve for controlling the pressure of the fuel cell body are provided, the reaction gas and the inert gas It is possible to adjust the flow rate of the gas to be the same and smoothly and continuously adjust it. Therefore, it is possible to eliminate the occurrence of a cell pressure change at the time of gas replacement, and to obtain a stable gas replacement method for a fuel cell device.
第１図は従来の一般的な燃料電池装置を示す構成図、第
２図は従来の燃料電池装置を示す系統図、第３図はこの
発明の一実施例による燃料電池装置を示す系統図、第４
図はこの発明に係る動作状態を示す状態図である。 図において、（４）は燃料電池本体、（10）は反応ガス
流量調節弁、（11）は不活性ガス流量調節弁、（12）は
圧力調節弁である。なお、図中同一符号は同一、又は相
当部分を示す。FIG. 1 is a configuration diagram showing a conventional general fuel cell device, FIG. 2 is a system diagram showing a conventional fuel cell device, and FIG. 3 is a system diagram showing a fuel cell device according to an embodiment of the present invention. Fourth
The figure is a state diagram showing an operation state according to the present invention. In the figure, (4) is a fuel cell main body, (10) is a reaction gas flow rate control valve, (11) is an inert gas flow rate control valve, and (12) is a pressure control valve. The same reference numerals in the drawings indicate the same or corresponding parts.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭58−163182（ＪＰ，Ａ) 特開 昭50−22189（ＪＰ，Ａ) 特開 昭59−68179（ＪＰ，Ａ) 特開 昭59−27474（ＪＰ，Ａ) ─────────────────────────────────────────────────── --- Continuation of the front page (56) References JP-A-58-163182 (JP, A) JP-A-50-22189 (JP, A) JP-A-59-68179 (JP, A) JP-A-59- 27474 (JP, A)
Claims (1)
を調節する反応ガス流量調節弁と、上記燃料電池本体に
供給される不活性ガスの流量を、上記反応ガスとは別に
調節する不活性ガス流量調節弁と、上記燃料電池本体の
上記反応ガス、不活性ガスの排出側に設けられ、上記燃
料電池本体の圧力を調節する圧力調節弁とからなり、上
記燃料電池本体に供給する反応ガスと不活性ガスとを置
換する燃料電池装置のガス置換方法において、上記反応
ガス流量調節弁の調節によって燃料電池本体に供給され
る反応ガスの流量変化と、上記不活性ガス流量調節弁の
調節によって燃料電池本体に供給される不活性ガスの流
量変化とを連続的に同一としてガス置換することを特徴
とする燃料電池装置のガス置換方法。1. A reaction gas flow rate control valve for controlling a flow rate of a reaction gas supplied to a fuel cell body, and an inert gas flow rate control valve for controlling a flow rate of an inert gas supplied to the fuel cell body separately from the reaction gas. A reaction to be supplied to the fuel cell main body, which comprises an active gas flow rate control valve and a pressure control valve provided on the discharge side of the reaction gas and the inert gas of the fuel cell main body for adjusting the pressure of the fuel cell main body. In a gas replacement method for a fuel cell device that replaces a gas with an inert gas, a flow rate change of a reaction gas supplied to a fuel cell main body by adjusting the reaction gas flow rate control valve, and an adjustment of the inert gas flow rate control valve A gas replacement method for a fuel cell device, characterized in that the gas replacement is performed by continuously making the flow rate change of the inert gas supplied to the fuel cell main body the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59099211A JPH0752648B2 (en) | 1984-05-15 | 1984-05-15 | Gas replacement method for fuel cell device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59099211A JPH0752648B2 (en) | 1984-05-15 | 1984-05-15 | Gas replacement method for fuel cell device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60241660A JPS60241660A (en) | 1985-11-30 |
| JPH0752648B2 true JPH0752648B2 (en) | 1995-06-05 |
Family
ID=14241317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59099211A Expired - Lifetime JPH0752648B2 (en) | 1984-05-15 | 1984-05-15 | Gas replacement method for fuel cell device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0752648B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5537762B2 (en) * | 1973-06-29 | 1980-09-30 | ||
| JPS58163182A (en) * | 1982-03-23 | 1983-09-27 | Mitsubishi Electric Corp | Fuel cell |
-
1984
- 1984-05-15 JP JP59099211A patent/JPH0752648B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60241660A (en) | 1985-11-30 |
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