JP7281499B2 - 電力システム - Google Patents
電力システム Download PDFInfo
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- JP7281499B2 JP7281499B2 JP2021058256A JP2021058256A JP7281499B2 JP 7281499 B2 JP7281499 B2 JP 7281499B2 JP 2021058256 A JP2021058256 A JP 2021058256A JP 2021058256 A JP2021058256 A JP 2021058256A JP 7281499 B2 JP7281499 B2 JP 7281499B2
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
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- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/70—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by fuel cells
- B60L50/72—Constructional details of fuel cells specially adapted for electric vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/75—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using propulsion power supplied by both fuel cells and batteries
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
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- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
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- B60L58/31—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells for starting of fuel cells
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- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/40—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for controlling a combination of batteries and fuel cells
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M16/00—Structural combinations of different types of electrochemical generators
- H01M16/003—Structural combinations of different types of electrochemical generators of fuel cells with other electrochemical devices, e.g. capacitors, electrolysers
- H01M16/006—Structural combinations of different types of electrochemical generators of fuel cells with other electrochemical devices, e.g. capacitors, electrolysers of fuel cells with rechargeable batteries
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- H—ELECTRICITY
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- 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
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- H—ELECTRICITY
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- 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
- H01M8/04303—Processes for controlling fuel cells or fuel cell systems applied during specific periods applied during shut-down
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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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
- H01M8/04313—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
- H01M8/04604—Power, energy, capacity or load
- H01M8/04611—Power, energy, capacity or load of the individual fuel cell
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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
- H01M8/04858—Electric variables
- H01M8/04925—Power, energy, capacity or load
- H01M8/04932—Power, energy, capacity or load of the individual fuel cell
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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
- H01M8/04955—Shut-off or shut-down of fuel cells
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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
- H01M8/04992—Processes for controlling fuel cells or fuel cell systems characterised by the implementation of mathematical or computational algorithms, e.g. feedback control loops, fuzzy logic, neural networks or artificial intelligence
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- H—ELECTRICITY
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- H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
- H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
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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
- H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
- H01M2250/40—Combination of fuel cells with other energy production systems
- H01M2250/402—Combination of fuel cell with other electric generators
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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
- 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
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
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Description
図1は、実施形態に係る車両1の要部構成の一例を示すブロック図である。
また、FCS12は、燃料電池スタックの稼働に用いられる装置として、燃料電池スタックに燃料ガス及び酸化剤ガスを供給する補機など備えていても良い。
ステップST17において制御部11は、1基のFCS12を繰り返し運転で動作させる。繰り返し運転は発電のオンとオフを繰り返すことで出力を抑える運転である。換言すると、繰り返し運転は発電の開始と停止を繰り返すことで出力を抑える運転である。なお、図4の波形W2は、繰り返し運転の状態での波形の一例を示している。図4は、FCS12の波形の一例を示す図である。なお、繰り返し運転は、第1の発電モードの一例である。
図2のステップST17及びステップST18の処理により、3基のFCS12は、1基が繰り返し運転、2基が発電停止の状態となる。
ステップST19及びステップST20の処理により、3基のFCS12は、1基が効率点運転、2基が発電停止の状態となる。
ステップST21~ステップST23の処理により、3基のFCS12は、1基が効率点運転、1基が繰り返し運転、1基が発電停止の状態となる。
ステップST24及びステップST25の処理により、3基のFCS12は、2基が効率点運転、1基が発電停止の状態となる。
ステップST26及びステップST27の処理により、3基のFCS12は、2基が効率点運転、1基が繰り返し運転の状態となる。
なお、制御部11は、ステップS17~ステップS27において、効率点運転させるFCS12、繰り返し運転させるFCS12、及び発電を停止させるFCS12をどれにするかは様々な方法を用いることができる。例えば、制御部11は、予め定められたFCS12、ランダムに決定したFCS12、稼働時間の多寡若しくは劣化度の多寡などによって決定したFCS12、又はその他の方法によって決定したFCS12に効率点運転、繰り返し運転又は発電の停止をさせる。例えば、制御部11は、劣化度が低いFCS12を優先して効率点運転又は繰り返し運転させる。
なお、kが偶数である場合、P(k-1)<Q(k/2)<Pkであり、kが奇数である場合、Q((k-1)/2)<P(k-1)<Pk<Q((k+1)/2)である。
なお、点P(2m-1)の出力は点Qmの出力よりも所定の値小さい値であり、点P(2m)の出力は点Qmの出力よりも所定の値大きい値である。当該所定の値は、点Pごとに異なる値であっても良い。
また、閾値P(2n-1)は、閾値Cの一例である。一例として、n=4では、閾値P7が閾値Cである。
また、閾値P1は第1の閾値の一例、閾値P2は第2の閾値の一例、閾値P3は第3の閾値の一例である。
制御部11は、バッテリー13の充電状態に応じてFCS12の出力を決定しても良い。例えば、制御部11は、バッテリー13の充電残量が少ない場合、発電の開始と停止のタイミングを制御することで、繰り返し運転における発電の停止時間の長さの比率を短くする。そして、制御部11は、FCS12が発電した余剰電力を用いてバッテリー13を充電する。
制御部11は、複数のFCS12からなる組を1つのFCSとみなして制御を行っても良い。例えば、車両1がFCS12-1~FCS12-6の6つのFCS12を備えるとする。この場合、制御部11は、一例として、FCS12-1及びFCS12-2からなる組、FCS12-3及びFCS12-4からなる組、並びにFCS12-5及びFCS12-6からなる組の3つに分けて制御する。制御部11は、同じ組のFCS12について、同じ動作モードで動作させる。
また、実施形態の電力システムは、発電施設若しくはコージェネレーションシステムなどの定置型システム又はロボットなどの、乗り物及び無人機以外の機械に適用することも可能である。
11 制御部
12 FCS
13 バッテリー
14 モーター
15 負荷
Claims (6)
- 電気化学反応により発電するn(nは、2以上の整数。)基の燃料電池と、
負荷で消費される電力に応じて要求される要求出力に基づき、前記燃料電池それぞれの動作モードを、発電の開始と停止を繰り返す第1の発電モード、発電を継続する第2の発電モード及び発電を停止する停止モードを含む複数のモードから決定したいずれかにする制御部と、を備える電力システム。 - 前記制御部は、
前記要求出力が閾値A以上である場合、m基の前記燃料電池の動作モードを前記第2の発電モードにし、
前記要求出力が閾値B以上である場合、m基の前記燃料電池の動作モードを前記第2の発電モードにし、1基の前記燃料電池の動作モードを前記第1の発電モードにし、
前記閾値Aは、m基の前記燃料電池のそれぞれを最も効率よく動作させた場合の当該燃料電池の合計出力よりも所定の値小さく、
前記閾値Bは、m基の前記燃料電池のそれぞれを最も効率よく動作させた場合の当該燃料電池の合計出力よりも所定の値大きく、
mは、1以上(n-1)以下の整数である、請求項1に記載の電力システム。 - 前記制御部は、前記要求出力が閾値C以上である場合、n基の前記燃料電池の動作モードを前記第2の発電モードにし、
前記閾値Cは、n基の前記燃料電池のそれぞれを最も効率よく動作させた場合の当該燃料電池の出力値の合計出力よりも所定の値小さい、請求項1又は請求項2に記載の電力システム。 - 前記制御部は、
前記要求出力が第1の閾値未満である場合、1基の前記燃料電池の動作モードを前記第1の発電モードにし、
前記要求出力が前記第1の閾値以上第2の閾値未満である場合、1基の前記燃料電池の動作モードを前記第2の発電モードにし、
前記要求出力が前記第2の閾値以上第3の閾値未満である場合、1基の前記燃料電池の動作モードを前記第2の発電モードにし、1基の前記燃料電池の動作モードを前記第1の発電モードにし、
前記第1の閾値は、1基の前記燃料電池を最も効率よく動作させた場合の当該1基の前記燃料電池の出力よりも所定の値小さく、
前記第2の閾値は、1基の前記燃料電池を最も効率よく動作させた場合の当該1基の前記燃料電池の出力よりも所定の値大きく、
前記第3の閾値は、前記第2の閾値よりも大きく、2基の前記燃料電池を最も効率よく動作させた場合の当該2基の前記燃料電池の合計出力よりも所定の値小さい、請求項1乃至請求項3のいずれか1項に記載の電力システム。 - 前記燃料電池が発電する電力によって充電される二次電池をさらに備え、
前記制御部は、前記二次電池の充電状態に応じて前記第1の発電モードにおける発電の開始と停止のタイミングを制御する、請求項1乃至請求項4のいずれか1項に記載の電力システム。 - 前記制御部は、前記第1の発電モード又は前記第2の発電モードで動作させる前記燃料電池を劣化度に基づいて決定する、請求項1乃至請求項5のいずれか1項に記載の電力システム。
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JP2021058256A JP7281499B2 (ja) | 2021-03-30 | 2021-03-30 | 電力システム |
CN202210220654.XA CN115139863A (zh) | 2021-03-30 | 2022-03-08 | 电力系统及电力控制装置 |
US17/692,175 US20220320543A1 (en) | 2021-03-30 | 2022-03-11 | Electrical power system and electrical power control device |
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JP2006147486A (ja) | 2004-11-24 | 2006-06-08 | Konica Minolta Holdings Inc | 燃料電池システム |
JP2007287584A (ja) | 2006-04-19 | 2007-11-01 | Nippon Telegr & Teleph Corp <Ntt> | 固体酸化物形燃料電池の燃料供給方法およびシステム |
JP2012134031A (ja) | 2010-12-22 | 2012-07-12 | Azbil Corp | 燃料電池システムおよび燃料電池システムの制御方法 |
JP2019145221A (ja) | 2018-02-16 | 2019-08-29 | トヨタ自動車株式会社 | 燃料電池システム |
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US8652697B2 (en) * | 2009-02-25 | 2014-02-18 | Bloom Energy Corporation | Controlling a fuel cell system based on fuel cell impedance characteristic |
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JP2006147486A (ja) | 2004-11-24 | 2006-06-08 | Konica Minolta Holdings Inc | 燃料電池システム |
JP2007287584A (ja) | 2006-04-19 | 2007-11-01 | Nippon Telegr & Teleph Corp <Ntt> | 固体酸化物形燃料電池の燃料供給方法およびシステム |
JP2012134031A (ja) | 2010-12-22 | 2012-07-12 | Azbil Corp | 燃料電池システムおよび燃料電池システムの制御方法 |
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