JP4644064B2 - 燃料電池システム - Google Patents
燃料電池システム Download PDFInfo
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- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
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- H01M8/043—Processes for controlling fuel cells or fuel cell systems applied during specific periods
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- H01M8/0438—Pressure; Ambient pressure; Flow
- H01M8/04395—Pressure; Ambient pressure; Flow of cathode reactants at the inlet or inside the fuel cell
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- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/04537—Electric variables
- H01M8/04544—Voltage
- H01M8/04567—Voltage of auxiliary devices, e.g. batteries, capacitors
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- 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
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04746—Pressure; Flow
- H01M8/04753—Pressure; Flow of fuel cell reactants
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- 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
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04746—Pressure; Flow
- H01M8/04761—Pressure; Flow of fuel cell exhausts
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- 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
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04746—Pressure; Flow
- H01M8/04783—Pressure differences, e.g. between anode and cathode
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- 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
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- 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
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- H01—ELECTRIC ELEMENTS
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- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M2008/1095—Fuel cells with polymeric electrolytes
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- 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
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- Y02E60/50—Fuel cells
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Description
前記酸化剤ガス供給量算出手段は、前記燃料ガス濃度計により前記燃料電池の発電停止時における燃料ガス濃度の初期値を検出し、この初期値と前記システム停止時間に基づいて燃料ガス濃度を算出し、算出された燃料ガス濃度と、燃料ガス濃度および掃気時間が関連づけられたマップとに基づいて前記酸化剤ガスの掃気時間を算出してもよい。
また、前記燃料ガス流通路に残留する燃料ガス濃度を検出する燃料ガス濃度計を備え、
前記酸化剤ガス供給量算出手段は、前記燃料ガス濃度計により前記燃料電池の発電停止時における燃料ガス濃度の初期値を検出し、この初期値と前記システム停止時間に基づいて燃料ガス濃度を算出し、算出された燃料ガス濃度と、燃料ガス濃度および掃気流量が関連づけられたマップとに基づいて前記酸化剤ガスの掃気流量を算出してもよい。
また、前記連通弁は、前記燃料電池の上流側の酸化剤ガス流通路と燃料ガス流通路とを連通する導入弁と、前記燃料電池の下流側の燃料ガス流通路と酸化剤ガス流通路とを連通する排出弁とを備え、前記掃気手段は、前記第1の掃気時において、先に前記導入弁を開弁してから前記排出弁を開弁するようにしてもよい。なお、導入弁は、後記する実施形態のエア導入弁に相当する。
図1は第1実施形態の燃料電池システムを示す全体構成図、図2は掃気処理を示すフローチャート、図3(a)はシステム停止時間とアノード系内水素濃度との関係を示すマップ、(b)はアノード系内水素濃度とカソード側掃気時間との関係を示すマップ、図4はアノード掃気を示すサブフローチャート、図5は掃気の切替タイミングを示すタイムチャートである。なお、以下では車両に搭載された燃料電池システムを例に挙げて説明するが、これに限定されるものではなく、船舶や航空機、あるいは定置式の燃料電池システムなどに適用することもできる。
図6は第2実施形態の燃料電池システムを示す全体構成図、図7は掃気処理を示すフローチャート、図8(a)はシステム停止時間とアノード系内水素濃度との関係を示すマップ、(b)はアノード系内水素濃度とカソード側掃気流量との関係を示すマップ、図9はアノード掃気を示すサブフローチャート、図10は掃気の切替タイミングを示すタイムチャートである。
2a アノードガス供給配管(燃料ガス流通路)
2b アノードガス排出配管(燃料ガス流通路)
3a カソードガス供給配管(酸化剤ガス流通路)
3b カソードガス排出配管(酸化剤ガス流通路)
5 ECU(掃気手段、酸化剤ガス供給量算出手段)
6 タイマ
41 エア導入配管(連通流路)
42 エア導入弁(連通弁)
45 排出配管(連通流路)
46 排出弁(連通弁)
FC 燃料電池
S1 温度計(状態監視手段)
S2 水素濃度計
Claims (4)
- 燃料ガスと酸化剤ガスとの反応により発電を行う燃料電池と、
前記燃料ガスが流通する燃料ガス流通路と、
前記酸化剤ガスが流通する酸化剤ガス流通路と、
前記燃料ガス流通路と前記酸化剤ガス流通路とを連通する連通流路と、
前記連通流路の開閉を行う連通弁と、
アノード極への燃料ガスの供給停止およびカソード極への酸化剤ガスの供給停止による前記燃料電池の発電停止後の状態変化を監視する状態監視手段と、
前記燃料電池の発電停止後に前記状態変化が所定条件になったときに前記連通弁を開弁し、前記酸化剤ガスで、前記酸化剤ガス流通路を掃気するとともに前記燃料ガス流通路に残留する燃料ガスを希釈する第1の掃気を行い、その後、前記燃料ガス流通路内の残留水を排出する第2の掃気を行う掃気手段と、
前記燃料電池の発電停止後の前記第1の掃気までのシステム停止時間が短くなるにつれて前記第1の掃気に必要な前記酸化剤ガスの供給量が多くなるように算出する酸化剤ガス供給量算出手段と、を備え、
前記酸化剤ガス供給量算出手段により求めた酸化剤ガスの供給量で前記第1の掃気を行うことを特徴とする燃料電池システム。 - 前記燃料ガス流通路に残留する燃料ガス濃度を検出する燃料ガス濃度計を備え、
前記酸化剤ガス供給量算出手段は、前記燃料ガス濃度計により前記燃料電池の発電停止時における燃料ガス濃度の初期値を検出し、この初期値と前記システム停止時間に基づいて燃料ガス濃度を算出し、算出された燃料ガス濃度と、燃料ガス濃度および掃気時間が関連づけられたマップとに基づいて前記酸化剤ガスの掃気時間を算出することを特徴とする請求項1に記載の燃料電池システム。 - 前記燃料ガス流通路に残留する燃料ガス濃度を検出する燃料ガス濃度計を備え、
前記酸化剤ガス供給量算出手段は、前記燃料ガス濃度計により前記燃料電池の発電停止時における燃料ガス濃度の初期値を検出し、この初期値と前記システム停止時間に基づいて燃料ガス濃度を算出し、算出された燃料ガス濃度と、燃料ガス濃度および掃気流量が関連づけられたマップとに基づいて前記酸化剤ガスの掃気流量を算出することを特徴とする請求項1に記載の燃料電池システム。 - 前記連通弁は、前記燃料電池の上流側の酸化剤ガス流通路と燃料ガス流通路とを連通する導入弁と、前記燃料電池の下流側の燃料ガス流通路と酸化剤ガス流通路とを連通する排出弁とを備え、
前記掃気手段は、前記第1の掃気時において、先に前記導入弁を開弁してから前記排出弁を開弁することを特徴とする請求項1から請求項3のいずれか1項に記載の燃料電池システム。
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005219225A JP4644064B2 (ja) | 2005-07-28 | 2005-07-28 | 燃料電池システム |
| US11/492,429 US7867661B2 (en) | 2005-07-28 | 2006-07-25 | Fuel cell system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005219225A JP4644064B2 (ja) | 2005-07-28 | 2005-07-28 | 燃料電池システム |
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| Publication Number | Publication Date |
|---|---|
| JP2007035509A JP2007035509A (ja) | 2007-02-08 |
| JP4644064B2 true JP4644064B2 (ja) | 2011-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| Country | Link |
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| US (1) | US7867661B2 (ja) |
| JP (1) | JP4644064B2 (ja) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5041266B2 (ja) * | 2005-12-19 | 2012-10-03 | トヨタ自動車株式会社 | 燃料電池システム及び移動体 |
| KR100814367B1 (ko) | 2007-03-12 | 2008-03-18 | 고려대학교 산학협력단 | 연료전지의 정지시 잔류가스 퍼징방법 |
| JP5326220B2 (ja) * | 2007-04-11 | 2013-10-30 | トヨタ自動車株式会社 | 燃料電池システム及びハイブリッド車両システム |
| JP5221908B2 (ja) * | 2007-08-03 | 2013-06-26 | 本田技研工業株式会社 | 燃料電池システム及びその運転方法 |
| US8349507B2 (en) | 2007-09-11 | 2013-01-08 | GM Global Technology Operations LLC | Implementation of an engine controller unit's non-volatile memory for measuring the time of a fuel cell system in a shut-off or standby state |
| GB2453126B (en) * | 2007-09-26 | 2013-02-06 | Intelligent Energy Ltd | Fuel cell system |
| JP5199683B2 (ja) * | 2008-01-23 | 2013-05-15 | 本田技研工業株式会社 | 燃料電池システム |
| JP4940175B2 (ja) | 2008-03-24 | 2012-05-30 | 本田技研工業株式会社 | 燃料電池システム及びその起動方法 |
| JP5172488B2 (ja) * | 2008-06-13 | 2013-03-27 | 本田技研工業株式会社 | 燃料電池システム |
| JP5081735B2 (ja) * | 2008-06-18 | 2012-11-28 | 本田技研工業株式会社 | 燃料電池システム |
| US8168343B2 (en) * | 2008-08-01 | 2012-05-01 | GM Global Technology Operations LLC | Humidification control during shutdown of a fuel cell system |
| JP5297156B2 (ja) * | 2008-11-14 | 2013-09-25 | 本田技研工業株式会社 | 燃料電池システム |
| JP5342265B2 (ja) * | 2009-02-18 | 2013-11-13 | 本田技研工業株式会社 | 燃料電池システム |
| JP5476877B2 (ja) * | 2009-09-11 | 2014-04-23 | トヨタ自動車株式会社 | 燃料電池システムおよび燃料電池の停止方法 |
| KR101124990B1 (ko) * | 2009-09-11 | 2012-03-27 | 현대자동차주식회사 | 연료전지 셧다운 방법 |
| US8304138B2 (en) * | 2010-05-26 | 2012-11-06 | Ford Global Technologies, Llc | Fuel cell system and method of use |
| US20110165485A1 (en) * | 2010-10-06 | 2011-07-07 | Ford Global Technologies, Llc | Fuel Cell System And Method Of Use |
| US20180151901A1 (en) | 2010-10-06 | 2018-05-31 | Ford Global Technologies, Llc | Method of operating a fuel cell during a soak time period |
| US8158292B2 (en) * | 2010-10-12 | 2012-04-17 | Ford Global Technologies, Llc | Fuel cell system and method of using the same |
| JP5711010B2 (ja) * | 2011-03-04 | 2015-04-30 | 本田技研工業株式会社 | 燃料電池システムの運転停止方法 |
| DE102020116712A1 (de) | 2020-06-25 | 2021-12-30 | Audi Aktiengesellschaft | Verfahren zum Abstellen einer Brennstoffzellenvorrichtung, Brennstoffzellenvorrichtung sowie Brennstoffzellen-Fahrzeug |
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| JPS6326962A (ja) | 1985-08-22 | 1988-02-04 | Tech Res & Dev Inst Of Japan Def Agency | 燃料電池の停止保存法 |
| US6479177B1 (en) | 1996-06-07 | 2002-11-12 | Ballard Power Systems Inc. | Method for improving the cold starting capability of an electrochemical fuel cell |
| JP3664150B2 (ja) * | 2002-05-14 | 2005-06-22 | 日産自動車株式会社 | 燃料電池システム |
| JP2004022460A (ja) * | 2002-06-19 | 2004-01-22 | Nissan Motor Co Ltd | 燃料電池車両の起動制御装置 |
| KR100471262B1 (ko) * | 2002-10-15 | 2005-03-10 | 현대자동차주식회사 | 연료 전지 시스템 |
| JP2005141943A (ja) * | 2003-11-04 | 2005-06-02 | Toyota Motor Corp | 燃料電池システム |
| JP2005276552A (ja) * | 2004-03-24 | 2005-10-06 | Honda Motor Co Ltd | 燃料電池の運転方法 |
| US7270904B2 (en) * | 2004-08-18 | 2007-09-18 | General Motors Corporation | Procedures for shutting down fuel cell system by using air purge at low cell temperature |
| JP2006059719A (ja) * | 2004-08-20 | 2006-03-02 | Honda Motor Co Ltd | 燃料電池システム |
| JP4028544B2 (ja) * | 2004-11-30 | 2007-12-26 | 本田技研工業株式会社 | 燃料電池システム及び該システムにおける燃料ガス経路の故障検知方法 |
| JP2007035389A (ja) * | 2005-07-26 | 2007-02-08 | Honda Motor Co Ltd | 燃料電池システムおよびその制御方法 |
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| US7867661B2 (en) | 2011-01-11 |
| US20070026277A1 (en) | 2007-02-01 |
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