JPH0758622B2 - How to start the fuel cell power supply - Google Patents
How to start the fuel cell power supplyInfo
- Publication number
- JPH0758622B2 JPH0758622B2 JP2317189A JP31718990A JPH0758622B2 JP H0758622 B2 JPH0758622 B2 JP H0758622B2 JP 2317189 A JP2317189 A JP 2317189A JP 31718990 A JP31718990 A JP 31718990A JP H0758622 B2 JPH0758622 B2 JP H0758622B2
- Authority
- JP
- Japan
- Prior art keywords
- fuel cell
- temperature
- main body
- cell main
- air
- 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
- 239000000446 fuel Substances 0.000 title claims description 80
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 9
- 210000004027 cell Anatomy 0.000 description 60
- 210000005056 cell body Anatomy 0.000 description 12
- 239000007789 gas Substances 0.000 description 12
- 239000000567 combustion gas Substances 0.000 description 8
- 239000002737 fuel gas Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 230000000630 rising effect Effects 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000002828 fuel tank Substances 0.000 description 3
- 230000036647 reaction Effects 0.000 description 3
- 238000002407 reforming Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 239000000112 cooling gas Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- -1 and at the same time Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
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
- H01M8/04223—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
-
- 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
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
-
- 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
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0267—Collectors; Separators, e.g. bipolar separators; Interconnectors having heating or cooling means, e.g. heaters or coolant flow channels
-
- 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
- H01M8/04223—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
- H01M8/04225—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells during start-up
-
- 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
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/043—Processes for controlling fuel cells or fuel cell systems applied during specific periods
- H01M8/04302—Processes for controlling fuel cells or fuel cell systems applied during specific periods applied during start-up
-
- 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
- H01M8/241—Grouping of fuel cells, e.g. stacking of fuel cells with solid or matrix-supported electrolytes
-
- 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
- H01M8/2457—Grouping of fuel cells, e.g. stacking of fuel cells with both reactants being gaseous or vaporised
-
- 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
- H01M8/2484—Details of groupings of fuel cells characterised by external manifolds
-
- 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
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04014—Heat exchange using gaseous fluids; Heat exchange by combustion of reactants
- H01M8/04022—Heating by combustion
-
- 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】 （産業上の利用分野） 本発明は空冷式燃料電池電源装置の起動方法、特に、空
冷式リン酸燃料電池本体を短時間で規定作動温度に昇温
させることができる起動方法に関するものである。The present invention relates to a method for starting an air-cooled fuel cell power supply device, and more particularly, to raising the temperature of an air-cooled phosphoric acid fuel cell main body to a specified operating temperature in a short time. It relates to the startup method.
（従来の技術） 一般に、空冷式燃料電池電源装置の起動方法としては、
昇温バーナーの燃焼ガスを加熱ガスとして用い、これを
空気供給系統に設けたブロワによって燃料電池本体の冷
却系及び反応空気系へ循環供給し、燃料電池本体が所定
温度に達した後、燃料ガスを燃料電池本体に供給し、電
池反応による昇温（負荷昇温）を行わせて規定作動温度
まで昇温させる方法が採用されている。(Prior Art) Generally, as a method for starting an air-cooled fuel cell power supply device,
The combustion gas of the heating burner is used as the heating gas, which is circulated and supplied to the cooling system and the reaction air system of the fuel cell main body by the blower provided in the air supply system, and after the fuel cell main body reaches the predetermined temperature, the fuel gas Is supplied to the main body of the fuel cell, the temperature is raised by the cell reaction (load temperature rise), and the temperature is raised to the specified operating temperature.
（発明が解決しようとする課題） しかしながら、燃料電池本体はその構造上、中央部に比
べてその上下両端部の熱容量が大きく、しかも上下両端
板を介しての放熱が避けられないため、従来の方法で
は、燃料電池本体の上下端板に近いセルの昇温の遅れが
大きく、従って、燃料電池本体の中央部が所定温度に達
してもその上下両端部のセル温度が低いため、負荷電流
を大きくできず、従って、負荷昇温を有効に利用できな
いため、燃料電池電源装置の起動に長時間を要するとい
う問題があった。(Problems to be Solved by the Invention) However, because of the structure of the fuel cell main body, the heat capacity at the upper and lower end portions thereof is larger than that at the central portion, and moreover, heat radiation through the upper and lower end plates is unavoidable. In the method, there is a large delay in the temperature rise of the cells near the upper and lower end plates of the fuel cell body, so even if the center of the fuel cell body reaches a predetermined temperature, the cell temperature at both the upper and lower ends of the cell is low, so the load current is reduced. There is a problem that the fuel cell power supply device requires a long time to start because the load cannot be increased and the load temperature cannot be effectively utilized.
他方、燃料電池電源装置の定常運転時の燃料電池本体の
内部温度を均一化するため、特開平１−221863号公報に
て、燃料電池本体の冷却ガス入口側端面の両側に一対の
遮蔽板を回動可能に配設し、運転時の中央部と両側部と
の温度差に応じてモータを駆動して遮蔽板を回動させ、
入口側端面に対する開き角を制御することが提案されて
はいるが、この方法では、起動時に燃料電池本体の上下
方向の温度分布を均一化することは不可能であった。On the other hand, in order to equalize the internal temperature of the fuel cell main body during steady operation of the fuel cell power supply device, a pair of shield plates are provided on both sides of the cooling gas inlet side end surface of the fuel cell main body in JP-A-1-221863. It is rotatably arranged, and the shield plate is rotated by driving the motor according to the temperature difference between the central part and both side parts during operation.
Although it has been proposed to control the opening angle with respect to the end face on the inlet side, this method cannot make the temperature distribution in the vertical direction of the fuel cell main body uniform at startup.
従って、本発明は、このような問題を解決し、燃料電池
本体の昇温の均一化を図り、電源装置の起動時間を短縮
できるようにすることを目的とするものである。Therefore, an object of the present invention is to solve such a problem, to make the temperature rise of the fuel cell main body uniform, and to shorten the startup time of the power supply device.
（課題を解決するための手段） 本発明は、前記課題を解決するための手段として、燃料
電池電源装置を起動するに際して、内部を複数の整流板
により上下方向に少なくとも３室に区画され、上下両端
側の区画室内にそれぞれ送気ファンを備えた空気入口側
マニホールドを介して加熱ガスを燃料電池本体の冷却系
および反応空気系に供給すると共に、前記燃料電池本体
の中央部とその上下両端部の温度を検出し、前記燃料電
池本体の中央部と各端部の温度差に応じて前記各送気フ
ァンの回転速度を制御するようにしたものである。(Means for Solving the Problems) As means for solving the above problems, the present invention divides the interior into at least three chambers in the vertical direction by a plurality of rectifying plates when starting the fuel cell power supply device, and The heating gas is supplied to the cooling system and the reaction air system of the fuel cell main body through the air inlet side manifolds each having an air supply fan in the compartments on both end sides, and the central portion of the fuel cell main body and its upper and lower end portions are provided. Is detected, and the rotation speed of each air supply fan is controlled in accordance with the temperature difference between the central portion and each end portion of the fuel cell main body.
（作用） 停止中の燃料電池電源装置を起動する場合、燃料電池本
体にマニホールドを介して加熱ガスを供給すると、マニ
ホールド内の整流板の作用により加熱ガスが燃料電池本
体の燃料電池本体の冷却系および反応空気系に均一に供
給される。この時、燃料電池本体の中央部と上下各端部
との温度差は零であるため、マニホールド内のファンは
共に停止状態に維持される。時間の経過と共に、加熱さ
れた燃料電池本体がその中央部と各端部との間に温度差
を生じると、各ファンが回転駆動させられるため、燃料
電池本体の中央部への加熱ガスの供給量は減少し、その
上下両端部側への加熱ガスの供給量は増加する。この
時、中央部と上下両端部との間の温度差が大きければ大
きいほど、ファンは速い速度で回転するように制御され
る。このため、燃料電池本体の上下両端部に加熱ガスが
これまでよりも多く供給され、燃料電池本体の上下両端
部の昇温が加速される。燃料電池本体の上下各端部と中
央部との温度差が小さくなるにつれて、ファンの回転速
度は徐々に減少し、燃料電池本体の端部の温度が中央部
の温度に等しくなると、ファンは再び停止される。この
ようにして燃料電池本体内部の上下方向の温度分布が均
一化され、その昇温が促進される。(Operation) When the fuel cell power supply unit that is stopped is started, when the heating gas is supplied to the fuel cell main body through the manifold, the heating gas is supplied to the cooling system of the fuel cell main body of the fuel cell main body by the action of the straightening plate in the manifold. And uniformly supplied to the reaction air system. At this time, since the temperature difference between the central portion and the upper and lower end portions of the fuel cell main body is zero, both the fans in the manifold are maintained in a stopped state. When the temperature of the heated fuel cell main body becomes different between the center and each end with the passage of time, each fan is driven to rotate, so that the heating gas is supplied to the center of the fuel cell main body. The amount decreases, and the amount of heating gas supplied to the upper and lower end portions increases. At this time, the greater the temperature difference between the central portion and the upper and lower end portions, the faster the fan is controlled to rotate. For this reason, more heated gas is supplied to the upper and lower ends of the fuel cell body, and the temperature rise of the upper and lower ends of the fuel cell body is accelerated. As the temperature difference between the upper and lower end portions of the fuel cell body and the central portion becomes smaller, the rotation speed of the fan gradually decreases, and when the temperature of the end portion of the fuel cell body becomes equal to the temperature of the central portion, the fan is restarted. Be stopped. In this way, the temperature distribution in the vertical direction inside the fuel cell body is made uniform, and the temperature rise is promoted.
以下、本発明の実施例について添付の図面を参照して説
明する。Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
（実施例） 第１図に示す本発明に実施するための空冷式燃料電池電
源装置は、アルコールと水とを混合してなる液体燃料を
収容する燃料タンク１と、バーナポンプ２と、改質燃料
ポンプ３と、起動用燃料ポンプ５と、改質燃料ポンプ３
から供給される液体燃料を水素リッチガスに改質する改
質器４と、水素と酸素との電池反応により電気エネルギ
ーに変換する燃料電池本体21と、燃料電池本体21に反応
空気および冷却空気を循環供給する空気供給系とを含
み、該空気供給系は昇温バーナー６、ブロワ７およびダ
ンパ11を備えている。(Embodiment) An air-cooled fuel cell power supply device for carrying out the present invention shown in FIG. 1 includes a fuel tank 1 for storing a liquid fuel formed by mixing alcohol and water, a burner pump 2, and a reformer. Fuel pump 3, starting fuel pump 5, reforming fuel pump 3
A reformer 4 for reforming liquid fuel supplied from a fuel cell into hydrogen-rich gas, a fuel cell main body 21 for converting the liquid fuel into electric energy by a cell reaction between hydrogen and oxygen, and circulating reaction air and cooling air in the fuel cell main body 21. The air supply system includes a temperature raising burner 6, a blower 7, and a damper 11.
燃料電池本体21は、従来のものと同様の構成を有し、燃
料極８と空気極９とを含む多数のセルを積重したセル積
重体からなり、数セル毎に冷却ガス通路を有する冷却プ
レート10が配設され、積重体の上下に配置された端板を
介して積重方向に締め付けられているが、簡明化のた
め、図では単セルで示してある。The fuel cell main body 21 has a structure similar to that of a conventional one, is composed of a cell stack body in which a large number of cells including a fuel electrode 8 and an air electrode 9 are stacked, and has a cooling gas passage for every several cells. The plates 10 are arranged and fastened in the stacking direction via the end plates arranged above and below the stack, but are shown as single cells in the figure for simplicity.
燃料電池本体21は、その冷却空気および反応空気の入口
側および出口側にそれぞれマニホールド12、15が取り付
けられている。なお、燃料電池本体21の燃料ガスの入口
側および出口側にもそれぞれマニホールドが取り付けて
あるが、図では省略してある。改質器４は、バーナポン
プ２によって送給される燃料をその内部で燃焼させ、そ
の燃焼ガスで改質燃料ポンプ３により供給される燃料を
気化、過熱した後、触媒で水素リッチガスに改質するも
ので、その構造は公知のものと同じである。The fuel cell main body 21 has manifolds 12 and 15 attached to the inlet side and the outlet side of the cooling air and the reaction air, respectively. Although manifolds are attached to the fuel gas inlet side and the fuel gas outlet side of the fuel cell body 21, they are omitted in the figure. The reformer 4 burns the fuel fed by the burner pump 2 inside thereof, vaporizes and superheats the fuel supplied by the reforming fuel pump 3 with the combustion gas, and then reforms it into a hydrogen-rich gas with a catalyst. The structure is the same as known ones.
空気入口側マニホールド12は、第２図に示されるよう
に、２枚の主整流板13aが配設され、その内部を上下方
向（積重方向）に３室に区画されている。中央の区画室
には２枚の副整流板13bが配設され、セル積重体の中央
部に位置するセルに均一に空気が供給するようにしてあ
り、また、セル積重体の上下両端側の区画室内にはそれ
ぞれ電動ファン14a,14bが配設されている。As shown in FIG. 2, the air inlet side manifold 12 is provided with two main straightening vanes 13a, and the interior thereof is divided into three chambers in the vertical direction (stacking direction). Two sub-rectifying plates 13b are arranged in the central compartment so that air is uniformly supplied to the cells located in the central portion of the cell stack, and the upper and lower end sides of the cell stack are provided. Electric fans 14a and 14b are arranged in the compartments, respectively.
また、燃料電池電源装置は、第３図に示す制御装置を備
え、この制御装置は、燃料電池本体21の中央部および両
端部の温度をそれぞれ検出する温度センサー18,19,20
と、それらの検出温度から燃料電池本体21の中央部と各
端部との温度差を演算し、その温度差に対応してファン
14a,14bを駆動する信号を出力する演算制御部CPUとを含
み、温度センサー18,19,20はA/Dコンバータ21を介して
演算制御部CPUに接続され、この演算制御部はD/Aコンバ
ータを介してファン14a,14bに接続されている。Further, the fuel cell power supply device includes a control device shown in FIG. 3, and this control device detects temperature sensors 18, 19, 20 for detecting the temperatures of the central portion and both end portions of the fuel cell main body 21, respectively.
And the temperature difference between the center and each end of the fuel cell main body 21 is calculated from the detected temperatures, and the fan corresponding to the temperature difference is calculated.
14a, 14b including a calculation control unit CPU for outputting a signal, the temperature sensor 18, 19, 20 is connected to the calculation control unit CPU via the A / D converter 21, this calculation control unit D / A It is connected to the fans 14a and 14b via a converter.
前記構成の電源装置の起動に際しては、まず、燃料タン
ク１内の液体燃料が起動用燃料ポンプ５により昇温バー
ナー６のノズル16に送られ、その近傍に設けられたコイ
ルヒータ17で着火され、その燃焼ガスがブロワ７によっ
て加熱ガスとして空気入口側マニホールド12に供給され
る。マニホールド供給口より供給された燃焼ガスは、整
流板13a,13bの作用によって燃料電池本体21の空気極及
び冷却プレートに均一に供給され、燃料電池本体21の昇
温を行う。When starting up the power supply device having the above-mentioned structure, first, the liquid fuel in the fuel tank 1 is sent to the nozzle 16 of the temperature raising burner 6 by the starting fuel pump 5 and ignited by the coil heater 17 provided in the vicinity of the nozzle 16. The combustion gas is supplied to the air inlet side manifold 12 as a heating gas by the blower 7. The combustion gas supplied from the manifold supply port is uniformly supplied to the air electrode and the cooling plate of the fuel cell main body 21 by the action of the rectifying plates 13a and 13b, and the temperature of the fuel cell main body 21 is raised.
起動初期の段階では、燃料電池本体21の内部温度は均一
であるが、燃焼ガスが供給されると、時間の経過と共に
燃料電池本体21の上下両端部の昇温速度が遅いため、中
央部との間に温度差を生じる。この温度差は、温度セン
サー19の検出温度と温度センサー18,20の検出温度から
演算制御部CPUで演算され、その温度差が小さくなるよ
うにファン14a,14bが回転駆動される。At the initial stage of start-up, the internal temperature of the fuel cell body 21 is uniform, but when the combustion gas is supplied, the temperature rising rate at the upper and lower end portions of the fuel cell body 21 becomes slow with the passage of time, so There is a temperature difference between. This temperature difference is calculated by the calculation control unit CPU from the temperature detected by the temperature sensor 19 and the temperature detected by the temperature sensors 18, 20, and the fans 14a, 14b are rotationally driven so that the temperature difference becomes small.
例えば、燃料電池本体21の中央部とその上端部との間に
温度差を生じると、その温度差に対応する回転速度でフ
ァン14aが駆動され、その回転速度は温度差が大きくな
るにつれてより速くなるようにしてある。このため、マ
ニホールドの供給口に供給された高温の燃焼ガスは、フ
ァン14aの作用によってマニホールドの上端側区画室に
より多く供給され、燃料電池本体21の上端側の昇温速度
が速められる。前記温度差が小さくなるにつれて、演算
制御部CPUによりファン14aは回転速度が遅くなるように
制御される。また、燃料電池本体21の中央部とその下端
部との間に温度差を生じた場合にも、同様な制御により
ファン14bが駆動されるため、燃料電池本体21の内部温
度が均一化され、全体の昇温速度が速められる。For example, when a temperature difference is generated between the center part and the upper end part of the fuel cell main body 21, the fan 14a is driven at a rotation speed corresponding to the temperature difference, and the rotation speed becomes faster as the temperature difference increases. It is designed to be. Therefore, the high-temperature combustion gas supplied to the supply port of the manifold is supplied more to the upper compartment of the manifold by the action of the fan 14a, and the temperature rising rate of the upper end of the fuel cell main body 21 is increased. As the temperature difference becomes smaller, the arithmetic control unit CPU controls the fan 14a so that the rotation speed becomes slower. Further, even when a temperature difference occurs between the central portion and the lower end portion of the fuel cell main body 21, the fan 14b is driven by the same control, so that the internal temperature of the fuel cell main body 21 is made uniform, The overall heating rate can be increased.
なお、この起動運転時、出口側マニホールド15に流出し
た燃焼ガスの一部はダンパー11により大気へ放出され、
残部の燃焼ガスは外気と共にブロワ７によって昇温バー
ナー６に再供給され、空気系を循環する。During the startup operation, a part of the combustion gas flowing out to the outlet side manifold 15 is released to the atmosphere by the damper 11,
The remaining combustion gas is re-supplied to the temperature rising burner 6 by the blower 7 together with the outside air, and circulates in the air system.
このようにして燃料電池本体21の温度が所定温度、例え
ば、100℃以上になると、昇温バーナー６が停止され、
改質器４で水素リッチガスに改質された改質ガスが燃料
ガスとして燃料極８へ供給されると同時に、空気極９お
よび冷却プレート10に空気が供給され、電池反応による
負荷昇温が開始される。燃料電池本体21の温度が180℃
に達すると、定常運転に入り定格出力となる。In this way, when the temperature of the fuel cell main body 21 reaches a predetermined temperature, for example, 100 ° C. or higher, the temperature rising burner 6 is stopped,
The reformed gas, which has been reformed into hydrogen-rich gas in the reformer 4, is supplied to the fuel electrode 8 as the fuel gas, and at the same time, air is supplied to the air electrode 9 and the cooling plate 10 to start the load temperature rise due to the cell reaction. To be done. The temperature of the fuel cell body 21 is 180 ° C
When it reaches, steady operation is started and the rated output is obtained.
ちなみに、本発明に係る方法により起動した場合、燃料
電池本体21の中央部の温度が100℃に達した時の燃料電
池本体21の上下方向の温度分布を測定したところ第４図
に実線で示すような結果となり、破線で示す従来の方法
で起動した場合に比べて、より均一に昇温させることが
できた。また、その時の所要時間は本発明方法は従来法
の半分であった。By the way, when the method according to the present invention is started, the temperature distribution in the vertical direction of the fuel cell main body 21 when the temperature of the central portion of the fuel cell main body 21 reaches 100 ° C. is measured and is shown by a solid line in FIG. As a result, the temperature could be raised more uniformly than in the case of starting by the conventional method shown by the broken line. The time required at that time was half that of the conventional method.
なお、前記実施例では、燃料ガスの原料としてアルコー
ルと水との混合液を用いているが、必ずしもこれに限定
されるものではなく、天然ガスその他公知のものを使用
できることは言うまでもない。In addition, in the above-mentioned embodiment, the mixed liquid of alcohol and water is used as the raw material of the fuel gas, but it is not necessarily limited to this, and it is needless to say that natural gas and other known materials can be used.
（発明の効果） 以上の説明から明らかなように、本発明によれば、燃料
電池電源装置の起動時、燃料電池本体の中央部と両端部
との昇温を均一化でき、しかも、その所要時間を従来に
比べて半減させることができる他、燃料電池本体の内部
温度の均一化によってその特性を向上させることができ
る、という優れた効果が得られる。(Effects of the Invention) As is apparent from the above description, according to the present invention, it is possible to uniformize the temperature rise between the central portion and both ends of the fuel cell main body when the fuel cell power supply device is started, and the required In addition to being able to halve the time as compared with the conventional case, it is possible to obtain the excellent effect that the characteristics can be improved by making the internal temperature of the fuel cell main body uniform.
第１図は、本発明方法の実施に使用する燃料電池電源装
置の構成図、第２図は第１図の電源装置の要部説明図、
第３図は第１図の電源装置の制御装置を示すブロック
図、第４図は本発明方法および従来法による燃料電池本
体の起動過程での温度分布を示す図である。 １〜燃料タンク、2,3,5〜燃料ポンプ、４〜改質器、６
〜昇温バーナー、７〜ブロワ、８〜燃料極、９〜空気
極、10〜冷却プレート、11〜ダンパー、12〜空気入口側
マニホールド、13a〜主整流板、13b〜副整流板、14〜フ
ァン、15〜出口側マニホールド、16〜ノズル、17〜コイ
ルヒータ、18,19,20〜温度センサー、21〜燃料電池本
体。FIG. 1 is a configuration diagram of a fuel cell power supply device used for carrying out the method of the present invention, FIG. 2 is an explanatory view of a main part of the power supply device of FIG. 1,
FIG. 3 is a block diagram showing the control device of the power supply device of FIG. 1, and FIG. 4 is a diagram showing temperature distribution in the starting process of the fuel cell main body according to the method of the present invention and the conventional method. 1-fuel tank, 2,3,5-fuel pump, 4-reformer, 6
~ Temperature rising burner, 7 ~ Blower, 8 ~ Fuel electrode, 9 ~ Air electrode, 10 ~ Cooling plate, 11 ~ Damper, 12 ~ Air inlet side manifold, 13a ~ Main flow plate, 13b ~ Sub flow plate, 14 ~ Fan , 15 ~ outlet side manifold, 16 ~ nozzle, 17 ~ coil heater, 18, 19, 20 ~ temperature sensor, 21 ~ fuel cell body.
Claims (1)
くとも３室に区画され、上下両端側の区画室内にそれぞ
れ送気ファンを備えた空気入口側マニホールドを介して
加熱ガスを燃料電池本体の冷却系および反応空気系に供
給すると共に、前記燃料電池本体の中央部とその上下両
端部の温度を検出し、前記燃料電池本体の中央部と各端
部の温度差に応じて前記各送気ファンの回転速度を制御
することを特徴とする燃料電池電源装置の起動方法。1. An inside of the fuel cell is divided into at least three chambers in the vertical direction by a plurality of straightening vanes, and heating gas is supplied to the fuel cell main body through air inlet side manifolds provided with air supply fans in the compartments at the upper and lower ends, respectively. While supplying to the cooling system and the reaction air system, the temperature of the central portion of the fuel cell main body and the upper and lower end portions thereof are detected, and each of the air feeds according to the temperature difference between the central portion of the fuel cell main body and each end portion. A method for starting a fuel cell power supply device, comprising controlling the rotation speed of a fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2317189A JPH0758622B2 (en) | 1990-11-20 | 1990-11-20 | How to start the fuel cell power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2317189A JPH0758622B2 (en) | 1990-11-20 | 1990-11-20 | How to start the fuel cell power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04188565A JPH04188565A (en) | 1992-07-07 |
| JPH0758622B2 true JPH0758622B2 (en) | 1995-06-21 |
Family
ID=18085449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2317189A Expired - Lifetime JPH0758622B2 (en) | 1990-11-20 | 1990-11-20 | How to start the fuel cell power supply |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0758622B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4523297B2 (en) * | 2004-02-10 | 2010-08-11 | 株式会社豊田中央研究所 | Fuel cell system and power generation method thereof |
| JP4523298B2 (en) * | 2004-02-10 | 2010-08-11 | 株式会社豊田中央研究所 | Fuel cell system and power generation method thereof |
| DE102006042107A1 (en) * | 2006-09-07 | 2008-03-27 | Enerday Gmbh | Fuel cell system and method for influencing the heat and temperature balance of a fuel cell stack |
-
1990
- 1990-11-20 JP JP2317189A patent/JPH0758622B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04188565A (en) | 1992-07-07 |
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