JP3337295B2 - Fuel cell system - Google Patents
Fuel cell systemInfo
- Publication number
- JP3337295B2 JP3337295B2 JP32148593A JP32148593A JP3337295B2 JP 3337295 B2 JP3337295 B2 JP 3337295B2 JP 32148593 A JP32148593 A JP 32148593A JP 32148593 A JP32148593 A JP 32148593A JP 3337295 B2 JP3337295 B2 JP 3337295B2
- Authority
- JP
- Japan
- Prior art keywords
- fuel cell
- air
- supplied
- pure water
- regenerative heat
- 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
- H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0065—Solid electrolytes
- H01M2300/0082—Organic polymers
-
- 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
Description
【０００１】[0001]
【産業上の利用分野】本発明は固体高分子膜を電解質膜
に用いた燃料電池を備える燃料電池システムに関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel cell system provided with a fuel cell using a solid polymer membrane as an electrolyte membrane.
【０００２】[0002]
【従来の技術】燃料電池は、水素ガスが供給されるアノ
ードと、酸化剤ガスである空気が供給されるカソード
と、固体高分子膜からなる電解質膜とを備えている。前
記燃料電池において、前記固体高分子膜は水を含むこと
によりイオン導伝性を示すため、前記水素ガスを加湿す
ることにより前記固体高分子膜に水分を供給する必要が
ある。特に、前記固体高分子膜として例えばデュポン社
製の商品名；ナフィオンＲ １１７などのプロトン導伝
体を用いる場合には、プロトン導伝に伴って前記アノー
ドから前記カソードへ水分が移動するため、前記水素ガ
スを十分に加湿する必要がある。2. Description of the Related Art A fuel cell includes an anode to which hydrogen gas is supplied, a cathode to which air as an oxidizing gas is supplied, and an electrolyte membrane made of a solid polymer membrane. In the fuel cell, since the solid polymer membrane exhibits ion conductivity by containing water, it is necessary to supply moisture to the solid polymer membrane by humidifying the hydrogen gas. In particular, when a proton conductor such as Nafion R 117 is used as the solid polymer membrane, for example, a trade name manufactured by DuPont, water moves from the anode to the cathode with proton conduction. It is necessary to sufficiently humidify the hydrogen gas.
【０００３】ところで、前記カソードには前記電池反応
により生成した水分が存在し、加えて前記固体高分子膜
として前記プロトン導伝体を用いた場合にはプロトン導
伝に伴い前記アノードから移動してきた水分が存在する
ため、加湿は不要であると考えられているが、本発明者
らは前記空気を加湿すると電池性能がより向上すること
を究明した。[0003] By the way, water generated by the battery reaction exists in the cathode, and when the proton conductor is used as the solid polymer membrane, the water moves from the anode with proton conduction. It is considered that humidification is unnecessary because of the presence of moisture, but the present inventors have determined that humidification of the air further improves battery performance.
【０００４】このようなことから、前記燃料電池におい
て前記空気を加湿しようとすると水の蒸発潜熱分の熱量
を外部から供給する必要があるため、前記電池のエネル
ギー効率が低下するという問題点があった。[0004] For this reason, when trying to humidify the air in the fuel cell, the amount of latent heat of water must be supplied from the outside, and there is a problem that the energy efficiency of the cell is reduced. Was.
【０００５】[0005]
【発明が解決しようとする課題】本発明は従来の問題を
解決するためになされたもので、空気を効率良く加湿す
ることが可能な燃料電池システムを提供しようとするも
のである。SUMMARY OF THE INVENTION The present invention has been made to solve the conventional problems, and has as its object to provide a fuel cell system capable of efficiently humidifying air.
【０００６】[0006]
【課題を解決するための手段】本発明は、固体高分子膜
を電解質に用いた燃料電池を備える燃料電池システムに
おいて、前記燃料電池に供給する空気と前記燃料電池か
らの排出空気とを熱交換する再生熱交換器と、前記再生
熱交換器に純水を供給する純水供給手段とを具備し、 前
記再生熱交換器において前記排出空気の熱により前記純
水を蒸発させて前記燃料電池に供給する空気を加湿した
後、この空気を前記燃料電池に供給することを特徴とす
る燃料電池システムである。SUMMARY OF THE INVENTION The present invention relates to a fuel cell system having a fuel cell using a solid polymer membrane as an electrolyte, wherein heat exchange between air supplied to the fuel cell and exhaust air from the fuel cell is performed. a regenerative heat exchanger for the reproduction
; And a pure water supply means for supplying pure water to the heat exchanger, before
The heat of the exhaust air in the regenerative heat exchanger
Water was evaporated to humidify the air supplied to the fuel cell
Thereafter, the air is supplied to the fuel cell.
【０００７】前記燃料電池は、水素ガスが供給されるア
ノードと、酸化剤ガスである空気が供給されるカソード
と、固体高分子膜からなる電解質膜とを備える。前記水
素ガスは、例えば改質器、ボンベ、水素吸蔵合金等から
供給されることが望ましい。[0007] The fuel cell includes an anode to which hydrogen gas is supplied, a cathode to which air as an oxidizing gas is supplied, and an electrolyte membrane made of a solid polymer membrane. The hydrogen gas is desirably supplied from, for example, a reformer, a cylinder, a hydrogen storage alloy, or the like.
【０００８】前記空気は、例えばブロワ、コンプレッ
サ、タービン等から供給されることが望ましい。前記固
体高分子膜は、プロトン導伝体であることが望ましく、
具体的には、デュポン社製の商品名；ナフィオン Ｒ
１１７を挙げることができる。Preferably, the air is supplied from, for example, a blower, a compressor, a turbine, or the like. Preferably, the solid polymer membrane is a proton conductor,
Specifically, a product name manufactured by DuPont; Nafion R
117 can be mentioned.
【０００９】[0009]
【作用】本発明によれば、燃料電池に供給する空気と前
記燃料電池からの排出空気とを熱交換し、かつ前記空気
を加湿するための純水が供給される再生熱交換器を備え
ることによって、前記再生熱交換器において電池反応の
反応熱により加熱され、かつ反応生成物である水蒸気を
含む前記排出空気の熱により前記純水を蒸発させること
ができるため、前記空気を効率良く加湿することができ
る。その結果、エネルギー効率が向上され、かつ優れた
性能を有する燃料電池を備えた燃料電池システムを提供
することができる。According to the present invention, there is provided a regenerative heat exchanger for exchanging heat between air supplied to a fuel cell and exhaust air from the fuel cell and supplying pure water for humidifying the air. Thereby, in the regenerative heat exchanger, the pure water can be heated by the reaction heat of the battery reaction, and the pure water can be evaporated by the heat of the exhaust air containing water vapor as a reaction product, so that the air is efficiently humidified. be able to. As a result, it is possible to provide a fuel cell system having a fuel cell with improved energy efficiency and excellent performance.
【００１０】[0010]
【実施例】以下、図面を参照して本発明の実施例を詳細
に説明する。 実施例 図１は本発明の燃料電池システムの概略図である。例え
ば改質器、ボンベ、水素吸蔵合金等の水素ガス供給手段
１は、加湿器２に接続されている。前記加湿器２は燃料
電池３に接続されている。燃料電池冷却系４は前記燃料
電池３と前記加湿器２とを接続している。前記燃料電池
３と前記水素ガス供給手段１とは第１の弁５を有するポ
ンプ６により接続されている。第２の弁７を有する第１
のベント８は、前記燃料電池３に接続されている。例え
ばブロワ、コンプレッサ、タービン等の空気供給手段９
は、再生熱交換加湿器１０に接続されている。前記再生
熱交換加湿器１０は、前記燃料電池３に接続されてい
る。第２のベント１１は、前記再生熱交換加湿器１０に
接続され、排出空気を前記再生熱交換加湿器１０から系
外へ排出する。純水供給手段１２は、前記加湿器２と、
前記再生熱交換加湿器１０とに接続されている。なお、
前記燃料電池から排出される未反応の水素ガスは、前記
弁５を開き、かつ前記弁７を閉じた状態で前記ポンプ６
を作動することにより前記水素ガス供給手段１に供給さ
れてリサイクルされ、また、前記弁５を閉じ、かつ前記
弁７を開くと、前記ベント８から系外へ排出される。Embodiments of the present invention will be described below in detail with reference to the drawings. Embodiment FIG. 1 is a schematic diagram of a fuel cell system according to the present invention. For example, a hydrogen gas supply means 1 such as a reformer, a cylinder, and a hydrogen storage alloy is connected to the humidifier 2. The humidifier 2 is connected to a fuel cell 3. The fuel cell cooling system 4 connects the fuel cell 3 and the humidifier 2. The fuel cell 3 and the hydrogen gas supply means 1 are connected by a pump 6 having a first valve 5. A first with a second valve 7
The vent 8 is connected to the fuel cell 3. Air supply means 9 such as a blower, a compressor, a turbine, etc.
Is connected to the regenerative heat exchange humidifier 10. The regenerative heat exchange humidifier 10 is connected to the fuel cell 3. The second vent 11 is connected to the regenerative heat exchange humidifier 10 and discharges exhaust air from the regenerative heat exchange humidifier 10 to the outside of the system. The pure water supply means 12 includes the humidifier 2 and
It is connected to the regenerative heat exchange humidifier 10. In addition,
Unreacted hydrogen gas discharged from the fuel cell is supplied to the pump 6 with the valve 5 opened and the valve 7 closed.
Is operated and supplied to the hydrogen gas supply means 1 to be recycled. When the valve 5 is closed and the valve 7 is opened, the hydrogen gas is discharged from the vent 8 to the outside of the system.
【００１１】このような図１に示す構成の燃料電池シス
テムによれば、燃料電池３の反応熱により加熱され、か
つ反応生成物の水蒸気を含む排出空気が供給される再生
熱交換加湿器１０に空気供給手段９から空気を供給する
と共に純水供給手段１２から純水を供給することによ
り、前記排気空気の熱により純水が蒸発されて前記空気
を効率良く加湿することができる。また、水素ガス供給
手段１から供給された水素ガスは、燃料電池冷却系４を
熱源として加熱された加湿器２において加湿された後、
前記燃料電池３に供給される。従って、空気及び水素ガ
スの両者を加湿した状態で前記燃料電池３のカソード、
アノードにそれぞれ供給できるため、エネルギー効率が
向上されると共に性能が著しく向上された燃料電池を備
えた燃料電池システムを提供することができる。According to the fuel cell system having the configuration shown in FIG. 1, the regenerative heat exchange humidifier 10 heated by the reaction heat of the fuel cell 3 and supplied with the exhaust air containing the reaction product water vapor is supplied to the regenerative heat exchange humidifier 10. By supplying the air from the air supply unit 9 and the pure water from the pure water supply unit 12, the pure water is evaporated by the heat of the exhaust air, so that the air can be efficiently humidified. Further, the hydrogen gas supplied from the hydrogen gas supply means 1 is humidified in the humidifier 2 heated by using the fuel cell cooling system 4 as a heat source.
The fuel is supplied to the fuel cell 3. Accordingly, the cathode of the fuel cell 3 is humidified in a state where both air and hydrogen gas are humidified.
Since the fuel cells can be supplied to the respective anodes, it is possible to provide a fuel cell system including a fuel cell with improved energy efficiency and significantly improved performance.
【００１２】[0012]
【発明の効果】以上詳述したように本発明によれば、空
気を効率良く加湿することができ、エネルギー効率及び
性能が向上された燃料電池を備えた燃料電池システムを
提供することができる。As described above in detail, according to the present invention, it is possible to provide a fuel cell system having a fuel cell capable of efficiently humidifying air and having improved energy efficiency and performance.
【図１】本発明の燃料電池システムの概略図。FIG. 1 is a schematic diagram of a fuel cell system of the present invention.
１…水素ガス供給手段、２…加湿器、３…燃料電池、４
…燃料電池冷却系、９…空気供給手段、１０…再生熱交
換加湿器、１２…純水供給手段。DESCRIPTION OF SYMBOLS 1 ... Hydrogen gas supply means, 2 ... Humidifier, 3 ... Fuel cell, 4
... Fuel cell cooling system, 9 ... Air supply means, 10 ... Regeneration heat exchange humidifier, 12 ... Pure water supply means.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) H01M 8/04 H01M 8/10 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 7 , DB name) H01M 8/04 H01M 8/10
Claims (1)
備える燃料電池システムにおいて、 前記燃料電池に供給する空気と前記燃料電池からの排出
空気とを熱交換する再生熱交換器と、前記再生熱交換器
に純水を供給する純水供給手段とを具備し、 前記再生熱交換器において前記排出空気の熱により前記
純水を蒸発させて前記燃料電池に供給する空気を加湿し
た後、この空気を前記燃料電池に供給する ことを特徴と
する燃料電池システム。1. A fuel cell system including a fuel cell using a solid polymer membrane as an electrolyte, comprising: a regenerative heat exchanger for exchanging heat between air supplied to the fuel cell and air discharged from the fuel cell ; Regenerative heat exchanger
Pure water supply means for supplying pure water to the regenerative heat exchanger,
Pure water is evaporated to humidify the air supplied to the fuel cell.
And then supplying the air to the fuel cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32148593A JP3337295B2 (en) | 1993-12-21 | 1993-12-21 | Fuel cell system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32148593A JP3337295B2 (en) | 1993-12-21 | 1993-12-21 | Fuel cell system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07176313A JPH07176313A (en) | 1995-07-14 |
| JP3337295B2 true JP3337295B2 (en) | 2002-10-21 |
Family
ID=18133095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32148593A Expired - Lifetime JP3337295B2 (en) | 1993-12-21 | 1993-12-21 | Fuel cell system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3337295B2 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6416895B1 (en) | 2000-03-09 | 2002-07-09 | Ballard Power Systems Inc. | Solid polymer fuel cell system and method for humidifying and adjusting the temperature of a reactant stream |
| JP4501165B2 (en) * | 1997-12-22 | 2010-07-14 | 株式会社エクォス・リサーチ | Fuel cell system for vehicles |
| JP4552236B2 (en) * | 1997-12-22 | 2010-09-29 | 株式会社エクォス・リサーチ | Fuel cell device |
| JP3483116B2 (en) * | 1998-06-15 | 2004-01-06 | 松下電器産業株式会社 | Polymer electrolyte fuel cell |
| JP4131038B2 (en) | 1998-06-26 | 2008-08-13 | 株式会社エクォス・リサーチ | Fuel cell system |
| DE10104246C1 (en) | 2001-01-31 | 2002-06-06 | Zsw | Fuel cell e.g. for electric traction drive, incorporates dampening of process gas used for operation of fuel cell |
| JP5021868B2 (en) * | 2001-04-13 | 2012-09-12 | 三菱重工業株式会社 | Polymer electrolyte fuel cell system |
| JP4884604B2 (en) * | 2001-07-04 | 2012-02-29 | 本田技研工業株式会社 | Fuel cell cooling system |
| JP3601516B2 (en) * | 2002-01-29 | 2004-12-15 | 日産自動車株式会社 | Fuel cell system |
| JP2007123833A (en) * | 2005-09-30 | 2007-05-17 | National Institute Of Advanced Industrial & Technology | Method for activating solid acid salt, and large-capacity capacitor and fuel cell using same |
| DE102014221241A1 (en) | 2014-10-20 | 2016-04-21 | Volkswagen Aktiengesellschaft | Humidifying device for a fuel cell system and fuel cell system |
| DE102014225589A1 (en) | 2014-12-11 | 2016-06-16 | Volkswagen Ag | Method for operating a fuel cell system and fuel cell system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62291865A (en) * | 1986-06-11 | 1987-12-18 | Mitsubishi Electric Corp | Fuel cell electric cenerator |
| JPH0554900A (en) * | 1991-08-29 | 1993-03-05 | Fuji Electric Co Ltd | Solid high polymer electrolyte type fuel cell |
| JP3111697B2 (en) * | 1992-10-20 | 2000-11-27 | 富士電機株式会社 | Solid polymer electrolyte fuel cell |
-
1993
- 1993-12-21 JP JP32148593A patent/JP3337295B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07176313A (en) | 1995-07-14 |
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