JP7345066B2 - 燃料電池システム - Google Patents
燃料電池システム Download PDFInfo
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- H01M8/04746—Pressure; Flow
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- H—ELECTRICITY
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- H01M8/0606—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants
- H01M8/0612—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants from carbon-containing material
- H01M8/0618—Reforming processes, e.g. autothermal, partial oxidation or steam reforming
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- H01M8/2418—Grouping by arranging unit cells in a plane
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- 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
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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
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Description
図1は、本発明を簡易に説明するためのブロック図と、燃料電池スタック内の温度分布を示す図である。
図2は、本実施形態の燃料電池システムの主要構成を示すブロック図である。
図6は、空気温度制御部75の制御フロー図である。次に空気温度制御部75における制御フローについて説明する。
以上説明したように、本実施形態の燃料電池システムによれば、直列配置された第1燃料電池(第1燃料電池スタック11)及び第2燃料電池(第2燃料電池スタック12)を含むとともに、燃料ガス(アノードガス)の流通方向が第1燃料電池から第2燃料電池に向かう方向であり、酸化剤ガス(カソードガス)の流通方向が第2燃料電池(第2燃料電池スタック12)から第1燃料電池(第1燃料電池スタック11)に向かう方向となっている燃料電池モジュール1と、燃料電池モジュール1に供給する酸化剤ガス(カソードガス)の温度を調整する酸化剤ガス温度調整装置(温度調整装置38)と、を含み、少なくとも、第1燃料電池(第1燃料電池スタック11)が燃料ガス(アノードガス)を改質可能な燃料電池システムにおいて、第1燃料電池(第1燃料電池スタック11)の温度及び第2燃料電池(第2燃料電池スタック12)の温度が所定の上限温度を超えないように、燃料電池モジュール1に供給する酸化剤ガス(カソードガス)の目標温度を設定し、当該目標温度に基づいて酸化剤ガス温度調整装置(温度調整装置38)を制御する温度制御手段(空気温度制御部75)を含み、温度制御手段(空気温度制御部75)は、目標温度をT、上限温度をTmax、第1燃料電池(第1燃料電池スタック11)の出口温度から入口温度を減算した差分をΔT1、第2燃料電池(第2燃料電池スタック12)の出口温度から入口温度を減算した差分をΔT2としたとき、目標温度TをT=Tmax-ΔT1-ΔT2(ΔT1>0)、T=Tmax-ΔT2(ΔT1≦0)、T=Tmax(ΔT2<0、且つΔT1+ΔT2<0)として算出する。
Claims (5)
- 直列配置された第1燃料電池及び第2燃料電池を含むとともに、燃料ガスの流通方向が前記第1燃料電池から前記第2燃料電池に向かう方向であり、酸化剤ガスの流通方向が前記第2燃料電池から前記第1燃料電池に向かう方向となっている燃料電池モジュールと、
前記燃料電池モジュールに供給する前記酸化剤ガスの温度を調整する酸化剤ガス温度調整装置と、を含み、
少なくとも、前記第1燃料電池が前記燃料ガスを改質可能な燃料電池システムにおいて、
前記第1燃料電池の温度及び前記第2燃料電池の温度が所定の上限温度を超えないように、前記燃料電池モジュールに供給する前記酸化剤ガスの目標温度を設定し、当該目標温度に基づいて前記酸化剤ガス温度調整装置を制御する温度制御手段を含み、
前記温度制御手段は、
前記目標温度をT、前記上限温度をTmax、前記第1燃料電池の出口温度から入口温度を減算した差分をΔT1、前記第2燃料電池の出口温度から入口温度を減算した差分をΔT2としたとき、前記目標温度Tを
T=Tmax-ΔT1-ΔT2(ΔT1>0)
T=Tmax-ΔT2(ΔT1≦0)
T=Tmax(ΔT2<0、且つΔT1+ΔT2<0)
として算出する燃料電池システム。 - 前記温度制御手段は、
前記ΔT1を、
前記第1燃料電池の発電に伴う発熱量と、前記第1燃料電池に供給される前記燃料ガスの改質反応で発生する吸熱量と、前記第1燃料電池の外部への放熱量と、前記第1燃料電池に供給される前記酸化剤ガスの流量と、に基づいて算出し、
前記ΔT2を、
前記第2燃料電池の発電に伴う発熱量と、前記第2燃料電池の外部への放熱量と、前記第2燃料電池に供給される前記酸化剤ガスの流量と、に基づいて算出する請求項1に記載の燃料電池システム。 - 前記第1燃料電池のアノードに酸素を供給する酸素供給源を備え、
少なくとも前記第1燃料電池は、前記酸素と前記燃料ガスで部分酸化反応を発生可能とされ、
前記温度制御手段は、
前記ΔT1を
前記第1燃料電池の発電に伴う発熱量と、前記部分酸化反応による発熱量と、前記第1燃料電池に供給される前記燃料ガスの流量から前記部分酸化反応により失われた前記燃料ガスの流量を減算した差分による改質反応で発生する吸熱量と、前記第1燃料電池の外部への放熱量と、前記第1燃料電池に供給される前記酸化剤ガスの流量と、に基づいて算出し、
前記ΔT2を
前記第2燃料電池の発電に伴う発熱量と、前記第2燃料電池の外部への放熱量と、前記第2燃料電池に供給される前記酸化剤ガスの流量と、に基づいて算出する請求項1に記載の燃料電池システム。 - 前記酸化剤ガス温度調整装置は、
前記燃料電池モジュールから排出される燃料オフガスと酸化剤オフガスを混合して燃焼させる燃焼器と、
前記燃焼器から排出される燃焼ガスと、前記燃料電池モジュールに供給する前記酸化剤ガスとを熱交換する熱交換器と、
前記燃焼器に追加燃料を供給する追加燃料供給手段と、を備え、
前記温度制御手段は、
前記酸化剤ガスが前記目標温度となるように前記追加燃料供給手段を制御する請求項1乃至3のいずれか1項に記載の燃料電池システム。 - 前記酸化剤ガスを前記燃料電池モジュールに供給する酸化剤ガス供給源を含み、
前記酸化剤ガス温度調整装置は、
前記燃料電池モジュールから排出される燃料オフガスと酸化剤オフガスを混合して燃焼させる燃焼器と、
前記酸化剤ガス供給源と前記燃料電池モジュールを接続するとともに、前記燃焼器から排出される燃焼ガスと、前記燃料電池モジュールに供給する前記酸化剤ガスとを熱交換する熱交換器と、
前記酸化剤ガス供給源から前記熱交換器を迂回して前記燃料電池モジュールに前記酸化剤ガスを供給するバイパス流路と、
前記熱交換器と前記バイパス流路における前記酸化剤ガスの流量の割合を調整する流量調整手段と、
前記燃焼器に追加燃料を供給する追加燃料供給手段と、を備え、
前記温度制御手段は、
前記酸化剤ガスが前記目標温度となるように前記流量調整手段、及び/または、前記追加燃料供給手段を制御する請求項1乃至3のいずれか1項に記載の燃料電池システム。
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PCT/IB2020/000625 WO2022018473A1 (ja) | 2020-07-21 | 2020-07-21 | 燃料電池システム |
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EP (1) | EP4187656A1 (ja) |
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US20120034538A1 (en) | 2008-08-19 | 2012-02-09 | Jahnke Fred C | High-efficiency dual-stack molten carbonate fuel cell system |
JP2013161602A (ja) | 2012-02-03 | 2013-08-19 | Nissan Motor Co Ltd | 燃料電池システム |
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JP3699063B2 (ja) * | 2002-06-26 | 2005-09-28 | 本田技研工業株式会社 | 燃料電池およびその制御方法 |
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- 2020-07-21 US US18/002,671 patent/US20230299322A1/en active Pending
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US20120034538A1 (en) | 2008-08-19 | 2012-02-09 | Jahnke Fred C | High-efficiency dual-stack molten carbonate fuel cell system |
JP2013161602A (ja) | 2012-02-03 | 2013-08-19 | Nissan Motor Co Ltd | 燃料電池システム |
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US20230299322A1 (en) | 2023-09-21 |
EP4187656A1 (en) | 2023-05-31 |
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