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JP2015115982A - Electric power output apparatus - Google Patents

Electric power output apparatus Download PDF

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JP2015115982A
JP2015115982A JP2013254102A JP2013254102A JP2015115982A JP 2015115982 A JP2015115982 A JP 2015115982A JP 2013254102 A JP2013254102 A JP 2013254102A JP 2013254102 A JP2013254102 A JP 2013254102A JP 2015115982 A JP2015115982 A JP 2015115982A
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power supply
voltage
power
external
fuel cell
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白井　和成
Kazunari Shirai
白井　　和成
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Denso Corp
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Denso Corp
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Priority to DE102014224146.4A priority patent/DE102014224146A1/en
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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
    • 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
    • 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
    • B60L50/70—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
    • 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
    • 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
    • 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
    • B60L2210/00—Converter types
    • B60L2210/10—DC to DC converters
    • B60L2210/12—Buck converters
    • 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
    • B60L2210/00—Converter types
    • B60L2210/10—DC to DC converters
    • B60L2210/14—Boost converters
    • 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/547—Voltage
    • 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
    • H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
    • 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
    • Y02E60/10—Energy storage using batteries
    • 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
    • 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
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • 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
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility
    • 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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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Fuel Cell (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide an electric power output apparatus capable of highly efficiently supplying electric power to an outside.SOLUTION: A step-up converter 40 of an electric power output apparatus 1 converts a voltage of electric power generated by a fuel cell 10 to an arbitrary voltage and output the electric power. A step-up/step-down converter 45 is provided between a power storage unit 20 that can be charged with the electric power generated by the fuel cell 10 and the step-up converter 40. A power supply port 50 supplies the electric power generated by the fuel cell 10 to an external device 70 from an intermediate portion between the step-up converter 40 and the step-up/step-down converter 45. A step-up control unit 60 determines whether a mode is an external power supply mode for supplying the electric power to the external device 70, and controls an output voltage to be equal to a drive voltage in response to a MG 30 if determining that the mode is not the external power supply mode. Furthermore, the step-up control unit 60 controls the output voltage to be equal to a supply voltage in response to the external device 70 if determining that the mode is the external power supply mode. It is thereby possible to supply the electric power to the external device 70 with less power loss and higher efficiency than those in a case of changing voltages a plurality of times.

Description

本発明は、電力出力装置に関する。   The present invention relates to a power output apparatus.

従来、燃料電池システムを備える燃料電池車両が知られている。例えば特許文献１では、駆動モータは、燃料電池または高圧バッテリから供給される電力により駆動される。また、特許文献１では、給電口を経由し、燃料電池により発電された電力を車両外部に供給可能である。   Conventionally, a fuel cell vehicle including a fuel cell system is known. For example, in Patent Document 1, the drive motor is driven by electric power supplied from a fuel cell or a high-voltage battery. Moreover, in patent document 1, the electric power generated by the fuel cell can be supplied to the outside of the vehicle via a power supply port.

特開２０１３−１９８２８２号公報JP 2013-198282 A

特許文献１では、燃料電池の電力は、変圧されることなく駆動モータへ供給される。また、燃料電池と高圧バッテリとの間には、高圧バッテリの充電および放電を切り替えるためのＤＣ−ＤＣコンバータ（電圧変換器）が設けられる。特許文献１では、ＤＣ−ＤＣコンバータと高圧バッテリとの間から、外部へ電力が供給される。   In Patent Document 1, the power of the fuel cell is supplied to the drive motor without being transformed. Further, a DC-DC converter (voltage converter) for switching between charging and discharging of the high voltage battery is provided between the fuel cell and the high voltage battery. In Patent Document 1, electric power is supplied to the outside from between a DC-DC converter and a high voltage battery.

ところで、燃料電池の電力を駆動電圧まで昇圧して駆動モータへ供給されることがある。この場合、燃料電池と高圧バッテリとの間には、駆動電圧まで昇圧するための昇圧コンバータ、および、蓄電池の充放電を切り替えるための昇降圧コンバータが設けられる。このような構成において、特許文献１のように、昇降圧コンバータと高圧バッテリとの間から外部へ電力を給電すると、昇圧コンバータにより昇圧される電圧や外部装置の電圧によっては、燃料電池の電圧を昇圧した後に、外部装置の電圧に降圧する必要があり、給電効率が低下する虞がある。
本発明は、上述の課題に鑑みてなされたものであり、その目的は、高効率に外部へ電力を供給可能な電力出力装置を提供することにある。 By the way, the electric power of the fuel cell may be boosted to the drive voltage and supplied to the drive motor. In this case, a boost converter for boosting to the drive voltage and a step-up / step-down converter for switching charge / discharge of the storage battery are provided between the fuel cell and the high-voltage battery. In such a configuration, as in Patent Document 1, when power is supplied to the outside from between the buck-boost converter and the high-voltage battery, the voltage of the fuel cell may be increased depending on the voltage boosted by the boost converter or the voltage of the external device. After boosting, it is necessary to step down to the voltage of the external device, which may reduce power supply efficiency.
This invention is made | formed in view of the above-mentioned subject, The objective is to provide the electric power output apparatus which can supply electric power outside with high efficiency.

本発明の電力出力装置は、燃料電池と、第１の電圧変換部と、第２の電圧変換部と、給電部と、昇圧制御部と、を備える。
燃料電池は、燃料ガスと酸化剤ガスとの化学反応により電気エネルギを発生させ、発生させた電気エネルギを負荷に供給する。 The power output device of the present invention includes a fuel cell, a first voltage conversion unit, a second voltage conversion unit, a power supply unit, and a boost control unit.
A fuel cell generates electric energy by a chemical reaction between a fuel gas and an oxidant gas, and supplies the generated electric energy to a load.

第１の電圧変換部は、燃料電池により発電された電力を任意の電圧に変換して出力する。
第２の電圧変換部は、燃料電池により発電された電力を充電可能な蓄電部と第１の電圧変換部との間に設けられる。
給電部は、燃料電池により発電された電力を第１の電圧変換部と第２の電圧変換部との中間部から外部装置へ供給可能に構成される。 The first voltage converter converts the electric power generated by the fuel cell into an arbitrary voltage and outputs it.
The second voltage conversion unit is provided between the power storage unit that can charge the power generated by the fuel cell and the first voltage conversion unit.
The power feeding unit is configured to be able to supply electric power generated by the fuel cell to an external device from an intermediate part between the first voltage conversion unit and the second voltage conversion unit.

昇圧制御部は、給電判断手段、および、電圧制御手段を有する。給電判断手段は、外部装置へ電力を供給する外部給電モードか否かを判断する。電圧制御手段は、外部給電モードか否かに応じ、第１の電圧変換部から出力される電圧である出力電圧を制御する。詳細には、電圧制御手段は、外部給電モードではないと判断された場合、出力電圧を負荷に応じた駆動電圧とする。また、電圧制御手段は、外部給電モードであると判断された場合、出力電圧を外部装置に応じた供給電圧とする。   The step-up control unit includes a power supply determination unit and a voltage control unit. The power supply determination unit determines whether or not the external power supply mode supplies power to the external device. The voltage control unit controls an output voltage that is a voltage output from the first voltage conversion unit according to whether or not the external power supply mode is set. Specifically, the voltage control means sets the output voltage as a drive voltage according to the load when it is determined that the external power supply mode is not set. In addition, when it is determined that the external power supply mode is set, the voltage control unit sets the output voltage to a supply voltage corresponding to the external device.

本発明では、外部給電モードではない場合、第１の電圧変換部は、外部装置の電圧によらず、燃料電池により発電された電力を駆動電圧（例えば６５０［Ｖ］）まで昇圧して負荷へ電力を供給可能である。電力損失は、電流の２乗に比例するため、第１の電圧変換部により高電圧まで昇圧して負荷に電力を供給することにより、電力損失を低減することができる。   In the present invention, when not in the external power supply mode, the first voltage conversion unit boosts the power generated by the fuel cell to the drive voltage (for example, 650 [V]) to the load regardless of the voltage of the external device. Electric power can be supplied. Since the power loss is proportional to the square of the current, the power loss can be reduced by boosting the voltage to a high voltage by the first voltage converter and supplying power to the load.

また、外部給電モードにおいて、第１の電圧変換部からの出力電圧は、外部装置に応じた電圧となるように制御されるので、燃料電池により発電された電力を１回の変圧にて外部装置への給電が可能である。これにより、複数回の変圧を行う場合と比較し、電力損失が小さく、高効率に外部給電が可能となる。   In the external power supply mode, the output voltage from the first voltage conversion unit is controlled to be a voltage corresponding to the external device, so that the electric power generated by the fuel cell can be converted into the external device by a single transformation. Power can be supplied to As a result, compared with the case where a plurality of transformations are performed, power loss is small, and external power feeding can be performed with high efficiency.

本発明の第１実施形態の電力出力装置の構成を示すシステム図である。1 is a system diagram illustrating a configuration of a power output device according to a first embodiment of the present invention. 本発明の第１実施形態の昇圧制御処理を説明するフローチャートである。It is a flowchart explaining the pressure | voltage rise control processing of 1st Embodiment of this invention. 本発明の第２実施形態の電力出力装置の構成を示すシステム図である。It is a system diagram which shows the structure of the power output device of 2nd Embodiment of this invention. 本発明の第３実施形態の電力出力装置の構成を示すシステム図である。It is a system diagram which shows the structure of the power output device of 3rd Embodiment of this invention. 参考例による電力出力装置の構成を示すシステム図である。It is a system diagram which shows the structure of the power output device by a reference example.

以下、本発明による電力出力装置を図面に基づいて説明する。なお、以下、複数の実施形態において、実質的に同一の構成には同一の符号を付して説明を省略する。
図１に示すように、電力出力装置１は、燃料電池１０、蓄電部２０、第１の電圧変換部としての昇圧コンバータ４０、第２の電圧変換部としての昇降圧コンバータ４５、給電部としての給電口５０、および、昇圧制御部６０等を備え、燃料電池車両に適用される。 Hereinafter, a power output device according to the present invention will be described with reference to the drawings. Hereinafter, in a plurality of embodiments, substantially the same configuration is denoted by the same reference numeral, and description thereof is omitted.
As shown in FIG. 1, the power output apparatus 1 includes a fuel cell 10, a power storage unit 20, a boost converter 40 as a first voltage conversion unit, a step-up / down converter 45 as a second voltage conversion unit, and a power supply unit. The power supply port 50, the boost control unit 60, and the like are provided and applied to a fuel cell vehicle.

燃料電池１０は、水素と空気中の酸素との電気化学反応により発電するセルが積層される燃料電池スタックにより構成される。
水素タンク１１には、燃料ガスとしての水素が高圧で充填される。水素タンク１１に充填された水素は、シャットバルブ１２およびレギュレータ１３を経由して燃料電池１０に供給される。また、燃料電池１０には、図示しないエアコンプレッサを経由し、酸化剤ガスとしての空気が供給される。 The fuel cell 10 is configured by a fuel cell stack in which cells that generate power by an electrochemical reaction between hydrogen and oxygen in the air are stacked.
The hydrogen tank 11 is filled with hydrogen as a fuel gas at a high pressure. The hydrogen filled in the hydrogen tank 11 is supplied to the fuel cell 10 via the shut valve 12 and the regulator 13. The fuel cell 10 is supplied with air as an oxidant gas via an air compressor (not shown).

燃料電池１０で発電された電力は、昇圧コンバータ４０、および、インバータ２５を経由し、走行用モータジェネレータ３０等の各種電気負荷に供給される。以下、モータジェネレータを「ＭＧ」と記載する。本実施形態では、走行用ＭＧ３０が「負荷」に対応する。
燃料電池１０で発電された電力は、昇圧コンバータ４０および昇降圧コンバータ４５を経由し、蓄電部２０に充電可能に構成される。 The electric power generated by the fuel cell 10 is supplied to various electric loads such as the traveling motor generator 30 via the boost converter 40 and the inverter 25. Hereinafter, the motor generator is referred to as “MG”. In the present embodiment, the traveling MG 30 corresponds to “load”.
The electric power generated by the fuel cell 10 is configured to be able to charge the power storage unit 20 via the boost converter 40 and the step-up / down converter 45.

蓄電部２０は、二次電池により充放電可能に構成される。蓄電部２０は、二次電池に限らず、例えば電気二重層キャパシタ等を用いてもよい。蓄電部２０の電力は、走行用ＭＧ３０等の各種電気負荷に供給される。また、蓄電部２０は、燃料電池１０により発電された電力、および、走行用ＭＧ３０の回生制動により生じた電力により充電される。   The power storage unit 20 is configured to be chargeable / dischargeable by a secondary battery. The power storage unit 20 is not limited to a secondary battery, and for example, an electric double layer capacitor or the like may be used. The electric power of power storage unit 20 is supplied to various electric loads such as traveling MG 30. In addition, power storage unit 20 is charged with electric power generated by fuel cell 10 and electric power generated by regenerative braking of traveling MG 30.

インバータ２５は、燃料電池１０および蓄電部２０から供給される直流電力を交流電力に変換し、走行用ＭＧ３０を駆動させる。また、回生制動時には、走行用ＭＧ３０で発電された交流電力を直流電力に変換し、蓄電部２０に供給する。
昇圧コンバータ４０は、燃料電池１０とインバータ２５との間に設けられ、昇圧制御部６０に制御されて燃料電池１０により発電された電力を任意の電圧に昇圧可能である。 Inverter 25 converts the DC power supplied from fuel cell 10 and power storage unit 20 into AC power, and drives traveling MG 30. Further, during regenerative braking, AC power generated by the traveling MG 30 is converted to DC power and supplied to the power storage unit 20.
Boost converter 40 is provided between fuel cell 10 and inverter 25, and is capable of boosting the electric power generated by fuel cell 10 under the control of boost control unit 60 to an arbitrary voltage.

昇降圧コンバータ４５は、昇圧コンバータ４０とインバータ２５とを接続する接続ライン４１と蓄電部２０との間に設けられる。昇降圧コンバータ４５は、車両の走行状況や燃料電池１０の発電量、蓄電部２０のＳＯＣ（State of Charge）等に応じ、蓄電部２０側の電圧が接続ライン４１側の電圧より高くなるようにし、蓄電部２０からインバータ２５側へ電力を供給する。また、昇降圧コンバータ４５は、車両の走行状況や燃料電池１０の発電量、蓄電部２０のＳＯＣ等に応じ、蓄電部２０側の電圧が接続ライン４１側の電圧より低くなるようにし、燃料電池１０により発電された電力および走行用ＭＧ３０の回生制動により発電された電力を、蓄電部２０側へ供給する。このように、昇降圧コンバータ４５の電圧を制御することにより、蓄電部２０の充放電を切り替える。   The step-up / down converter 45 is provided between the connection line 41 that connects the boost converter 40 and the inverter 25 and the power storage unit 20. The step-up / step-down converter 45 causes the voltage on the power storage unit 20 side to be higher than the voltage on the connection line 41 side in accordance with the traveling state of the vehicle, the amount of power generated by the fuel cell 10, the SOC (State of Charge) of the power storage unit 20, and the like. Then, electric power is supplied from the power storage unit 20 to the inverter 25 side. In addition, the step-up / down converter 45 causes the voltage on the power storage unit 20 side to be lower than the voltage on the connection line 41 side in accordance with the running state of the vehicle, the amount of power generated by the fuel cell 10, the SOC of the power storage unit 20, and the like. 10 and the power generated by regenerative braking of the traveling MG 30 are supplied to the power storage unit 20 side. Thus, charging / discharging of the electrical storage part 20 is switched by controlling the voltage of the step-up / down converter 45.

給電口５０は、燃料電池１０にて発生し、昇圧コンバータ４０にて昇圧された電力を外部装置７０へ供給可能な箇所に設けられる。具体的には、給電口５０は、昇圧コンバータ４０と昇降圧コンバータ４５との間に設けられる。給電口５０は、外部装置７０へ電力を供給するための給電コネクタ５１を挿抜可能に設けられる。給電コネクタ５１が給電口５０に接続されると、給電コネクタ５１および図示しない変換器等を経由し、外部装置７０へ電力が供給される。   The power supply port 50 is provided at a location where power generated by the fuel cell 10 and boosted by the boost converter 40 can be supplied to the external device 70. Specifically, the power supply port 50 is provided between the boost converter 40 and the step-up / down converter 45. The power supply port 50 is provided so that a power supply connector 51 for supplying power to the external device 70 can be inserted and removed. When the power supply connector 51 is connected to the power supply port 50, power is supplied to the external device 70 via the power supply connector 51 and a converter (not shown).

昇圧制御部６０は、マイクロコンピュータ等により構成され、内部にＣＰＵ、ＲＯＭ、ＲＡＭ、Ｉ／Ｏ、および、これらを接続するバスライン等を備え、予め記憶されたプログラムをＣＰＵにより実行するソフトウェア処理や、専用の電子回路によるハードウェア処理によって制御を実行する。本実施形態では、昇圧制御部６０は、給電開始スイッチ６５の操作状態を監視し、給電開始スイッチ６５の操作状態に基づき、昇圧コンバータ４０の出力電圧Ｖを制御する。すなわち、本実施形態では、昇圧制御部６０が「監視手段」として機能する。   The boost control unit 60 is configured by a microcomputer or the like, and includes a CPU, a ROM, a RAM, an I / O, a bus line for connecting these, and a software process for executing a program stored in advance by the CPU. Control is executed by hardware processing by a dedicated electronic circuit. In the present embodiment, the boost control unit 60 monitors the operation state of the power supply start switch 65 and controls the output voltage V of the boost converter 40 based on the operation state of the power supply start switch 65. That is, in the present embodiment, the boost control unit 60 functions as “monitoring means”.

給電開始スイッチ６５は、例えば運転席近傍に設けられ、ユーザにより操作される。給電開始スイッチ６５がオフされているとき、通常起動モードとする。通常起動モードでは、燃料電池１０により発電される電力は、車両の運転状況や蓄電部２０のＳＯＣ等に応じ、昇圧コンバータ４０にて駆動電圧Ｖｄ（例えば最大で６５０［Ｖ］）に昇圧され、走行用ＭＧ３０の駆動や蓄電部２０の充電等、車両内部にて用いられる。   The power supply start switch 65 is provided near the driver's seat, for example, and is operated by the user. When the power supply start switch 65 is turned off, the normal startup mode is set. In the normal startup mode, the electric power generated by the fuel cell 10 is boosted to the drive voltage Vd (for example, 650 [V] at the maximum) by the boost converter 40 in accordance with the driving state of the vehicle, the SOC of the power storage unit 20, and the like. It is used inside the vehicle, such as driving the driving MG 30 and charging the power storage unit 20.

給電開始スイッチ６５がオンされているとき、外部給電モードとする。外部給電モードでは、燃料電池１０により発電される電力は、昇圧コンバータ４０にて外部装置７０の規格に応じた電圧である供給電圧Ｖｓ（例えば２００［Ｖ］）に昇圧され、給電口５０から外部装置７０へ供給される。
本実施形態では、給電開始スイッチ６５がオンされている状態が「給電開始状態」に対応する。 When the power supply start switch 65 is turned on, the external power supply mode is set. In the external power supply mode, the electric power generated by the fuel cell 10 is boosted to a supply voltage Vs (for example, 200 [V]) that is a voltage according to the standard of the external device 70 by the boost converter 40, Supplied to device 70.
In the present embodiment, the state where the power supply start switch 65 is turned on corresponds to the “power supply start state”.

ここで、図５に示す参考例について説明する。電力出力装置９では、燃料電池１０により発電される電力、および、蓄電部２０から供給される電力は、昇圧コンバータ４０および昇降圧コンバータ４５により、駆動電圧Ｖｄまで昇圧され、走行用ＭＧ３０の駆動に用いられる。
また、電力出力装置９では、燃料電池１０により発電された電力を外部装置７０に供給するための給電コネクタ５１が接続される給電口５５は、蓄電部２０と昇降圧コンバータ４５との間に設けられる。 Here, the reference example shown in FIG. 5 will be described. In the power output device 9, the power generated by the fuel cell 10 and the power supplied from the power storage unit 20 are boosted to the drive voltage Vd by the boost converter 40 and the step-up / down converter 45 to drive the travel MG 30. Used.
In the power output device 9, a power supply port 55 to which a power supply connector 51 for supplying power generated by the fuel cell 10 to the external device 70 is connected is provided between the power storage unit 20 and the step-up / down converter 45. It is done.

このような構成において、外部装置７０へ供給される電力は、昇圧コンバータ４０にて駆動電圧Ｖｄ（例えば６５０［Ｖ］）まで昇圧された後、昇降圧コンバータ４５にて供給電圧Ｖｓ（例えば２００［Ｖ］）に降圧される。すなわち、電力出力装置９では、燃料電池１０により発電された電力を外部装置７０へ出力する際、２回、電圧変換が行われる。そのため、電圧変換の度に損失が生じ、給電効率が低下する、或いは、昇圧コンバータ４０および昇降圧コンバータ４５等の機器の発熱が生じる虞がある。   In such a configuration, the power supplied to the external device 70 is boosted to the drive voltage Vd (for example, 650 [V]) by the boost converter 40, and then the supply voltage Vs (for example, 200 [for example] by the step-up / down converter 45). V]). That is, the power output device 9 performs voltage conversion twice when outputting the power generated by the fuel cell 10 to the external device 70. Therefore, there is a possibility that a loss occurs every time the voltage is converted and the power supply efficiency is lowered, or that the devices such as the boost converter 40 and the buck-boost converter 45 generate heat.

そこで、本実施形態では、図１に示すように、給電口５０を昇圧コンバータ４０と昇降圧コンバータ４５との間に設けるとともに、昇圧制御部６０により昇圧コンバータ４０の出力電圧Ｖを制御することにより、１回の電圧変換にて外部装置７０への給電を可能としている。   Therefore, in the present embodiment, as shown in FIG. 1, the power supply port 50 is provided between the boost converter 40 and the buck-boost converter 45, and the output voltage V of the boost converter 40 is controlled by the boost controller 60. The power supply to the external device 70 is enabled by one voltage conversion.

ここで、昇圧制御部６０における昇圧制御処理を図２に示すフローチャートに基づいて説明する。昇圧制御処理は、昇圧制御部６０にて、例えば燃料電池システムの起動中に所定の間隔にて実行される。
最初のステップＳ１０１（以下、「ステップ」を省略し、単に記号「Ｓ」で示す。）では、燃料電池１０が発電中か否かを判断する。燃料電池１０が発電中ではないと判断された場合（Ｓ１０１：ＮＯ）、以下の処理を行わない。燃料電池１０が発電中であると判断された場合（Ｓ１０１：ＹＥＳ）、Ｓ１０２へ移行する。 Here, the boost control process in the boost controller 60 will be described based on the flowchart shown in FIG. The boost control process is executed by the boost control unit 60 at a predetermined interval, for example, during startup of the fuel cell system.
In the first step S101 (hereinafter, “step” is omitted and simply indicated by the symbol “S”), it is determined whether or not the fuel cell 10 is generating power. When it is determined that the fuel cell 10 is not generating power (S101: NO), the following processing is not performed. When it is determined that the fuel cell 10 is generating power (S101: YES), the process proceeds to S102.

Ｓ１０２では、外部給電モードか否かを判断する。本実施形態では、給電開始スイッチ６５のオン／オフ状態に基づいて判断する。外部給電モードであると判断された場合（Ｓ１０２：ＹＥＳ）、すなわち給電開始スイッチ６５がオンである場合、Ｓ１０３へ移行する。外部給電モードではないと判断された場合（Ｓ１０２：ＮＯ）、すなわち給電開始スイッチ６５がオフである場合（Ｓ１０２：ＮＯ）、Ｓ１０４へ移行する。   In S102, it is determined whether or not the external power supply mode is set. In the present embodiment, the determination is made based on the on / off state of the power supply start switch 65. When it is determined that the external power supply mode is set (S102: YES), that is, when the power supply start switch 65 is on, the process proceeds to S103. When it is determined that the external power supply mode is not set (S102: NO), that is, when the power supply start switch 65 is off (S102: NO), the process proceeds to S104.

Ｓ１０３では、給電開始スイッチ６５がオンされているので、外部給電モードとし、昇圧コンバータ４０の出力電圧Ｖを外部装置７０の規格に応じた供給電圧Ｖｓとする。
Ｓ１０４では、給電開始スイッチ６５がオンされていないので、通常起動モードとし、昇圧コンバータ４０の出力電圧Ｖを駆動電圧Ｖｄとする。駆動電圧Ｖｄは、車両の運転状況等に応じ、例えば最大で６５０［Ｖ］とする。 In S103, since the power supply start switch 65 is turned on, the external power supply mode is set, and the output voltage V of the boost converter 40 is set to the supply voltage Vs according to the standard of the external device 70.
In S104, since the power supply start switch 65 is not turned on, the normal startup mode is set, and the output voltage V of the boost converter 40 is set to the drive voltage Vd. The drive voltage Vd is set to, for example, 650 [V] at the maximum according to the driving situation of the vehicle.

Ｓ１０３またはＳ１０４に続いて移行するＳ１０５では、昇圧コンバータ４０からの出力を開始する。また、昇圧コンバータ４０からの出力中であれば、出力を継続する。
これにより、外部給電中か否かを適切に判断し、昇圧コンバータ４０の出力電圧Ｖを決定することができる。 In S105, which is shifted to S103 or S104, output from the boost converter 40 is started. If the output from the boost converter 40 is being output, the output is continued.
Thereby, it is possible to appropriately determine whether or not external power feeding is in progress, and to determine output voltage V of boost converter 40.

以上詳述したように、本実施形態の電力出力装置１は、燃料電池１０と、昇圧コンバータ４０と、昇降圧コンバータ４５と、給電口５０と、昇圧制御部６０と、を備える。
燃料電池１０は、燃料ガスである水素と酸化剤ガスとしての空気中の酸素との化学反応により電気エネルギを発生させ、発生した電気エネルギを走行用ＭＧ３０に供給する。 As described above in detail, the power output apparatus 1 of the present embodiment includes the fuel cell 10, the boost converter 40, the step-up / down converter 45, the power supply port 50, and the boost control unit 60.
The fuel cell 10 generates electric energy by a chemical reaction between hydrogen as a fuel gas and oxygen in the air as an oxidant gas, and supplies the generated electric energy to the traveling MG 30.

昇圧コンバータ４０は、燃料電池１０により発電された電力を任意の電圧に変換して出力する。
昇降圧コンバータ４５は、燃料電池１０により発電された電力を充電可能な蓄電部２０と、昇圧コンバータ４０との間に設けられる。
給電口５０は、燃料電池１０により発電された電力を昇圧コンバータ４０と昇降圧コンバータ４５との中間部から外部装置７０へ供給可能に構成される。 Boost converter 40 converts the electric power generated by fuel cell 10 into an arbitrary voltage and outputs it.
The step-up / down converter 45 is provided between the power storage unit 20 capable of charging the power generated by the fuel cell 10 and the boost converter 40.
The power supply port 50 is configured to be able to supply the electric power generated by the fuel cell 10 to the external device 70 from an intermediate portion between the boost converter 40 and the step-up / down converter 45.

昇圧制御部６０では、外部装置７０へ電力を供給する外部給電モードか否かを判断し（図２中のＳ１０２）、外部給電モードか否かに応じ、昇圧コンバータ４０から出力される電圧である出力電圧Ｖを制御する。詳細には、外部給電モードではないと判断された場合（Ｓ１０２：ＮＯ）、出力電圧Ｖを走行用ＭＧ３０に応じた駆動電圧Ｖｄとする。また、外部給電モードであると判断された場合（Ｓ１０２：ＹＥＳ）、出力電圧Ｖを外部装置７０に応じた供給電圧Ｖｓとする。   The boost control unit 60 determines whether or not the external power supply mode supplies power to the external device 70 (S102 in FIG. 2), and is a voltage output from the boost converter 40 depending on whether or not the external power supply mode is selected. The output voltage V is controlled. Specifically, when it is determined that the external power supply mode is not set (S102: NO), the output voltage V is set to the drive voltage Vd corresponding to the traveling MG 30. When it is determined that the external power supply mode is selected (S102: YES), the output voltage V is set to the supply voltage Vs corresponding to the external device 70.

本実施形態では、外部給電モードではない場合、通常起動モードとし、昇圧コンバータ４０は、外部装置７０の電圧によらず、燃料電池１０により発電された電力を駆動電圧Ｖｄまで昇圧して走行用ＭＧ３０へ電力を供給する。電力損失は、電流の２乗に比例するため、昇圧コンバータ４０により高電圧まで昇圧して走行用ＭＧ３０へ電力を供給することにより、通常起動モードにおける電力損失を低減することができる。   In the present embodiment, when not in the external power supply mode, the normal startup mode is set, and the boost converter 40 boosts the power generated by the fuel cell 10 to the drive voltage Vd regardless of the voltage of the external device 70, and the travel MG 30 To supply power. Since the power loss is proportional to the square of the current, the power loss in the normal startup mode can be reduced by boosting the voltage to a high voltage by the boost converter 40 and supplying power to the traveling MG 30.

また、外部給電モードにおいて、昇圧コンバータ４０からの出力電圧Ｖは、外部装置７０に応じた電圧となるように制御されるので、燃料電池１０により発電された電力を１回の変圧にて外部装置７０へ給電可能である。これにより、複数回の変圧を行う場合と比較し、電力損失が少なく、高効率に外部給電が可能となる。また、外部給電モードにおける昇圧コンバータ４０および昇降圧コンバータ４５の発熱を抑えることができる。   Further, in the external power supply mode, the output voltage V from the boost converter 40 is controlled so as to be a voltage corresponding to the external device 70, so that the electric power generated by the fuel cell 10 is converted into the external device by a single transformation. 70 can be fed. Thereby, compared with the case where a plurality of voltage transformations are performed, the power loss is small and external power feeding can be performed with high efficiency. Further, heat generation of boost converter 40 and buck-boost converter 45 in the external power supply mode can be suppressed.

本実施形態では、昇圧制御部６０は、ユーザにより操作される給電開始スイッチ６５の操作状態を監視する。また、昇圧制御部６０では、給電開始スイッチ６５が給電開始状態となった場合、外部給電モードであると判断する。これにより、外部給電モードか否かを適切に判断することができる。
本実施形態では、Ｓ１０２が「給電判断手段」の機能としての処理に対応し、Ｓ１０３およびＳ１０４が「電圧制御手段」の機能としての処理に対応する。 In the present embodiment, the boost control unit 60 monitors the operation state of the power supply start switch 65 operated by the user. Further, when the power supply start switch 65 is in a power supply start state, the boost control unit 60 determines that the external power supply mode is set. Thereby, it can be determined appropriately whether it is an external electric power feeding mode.
In the present embodiment, S102 corresponds to processing as a function of “power supply determination unit”, and S103 and S104 correspond to processing as a function of “voltage control unit”.

（第２実施形態）
本発明の第２実施形態による電力出力装置を図３に示す。
図３に示すように、電力出力装置２は、車両全体の制御を司る上位制御部としての上位ＥＣＵ６１を備える。本実施形態では、給電開始スイッチ６５の操作状態に係る情報は、上位ＥＣＵ６１に入力される。また、上位ＥＣＵ６１は、給電開始スイッチ６５の操作状態を監視する監視手段として機能する。
昇圧制御部６０は、上位ＥＣＵ６１から給電開始スイッチ６５の操作状態に係る情報を通信等により取得し、取得された情報に基づき、外部給電モードか否かを判断する（図２中のＳ１０２）。
このように構成しても、上記実施形態と同様の効果を奏する。 (Second Embodiment)
A power output apparatus according to a second embodiment of the present invention is shown in FIG.
As shown in FIG. 3, the power output device 2 includes a host ECU 61 as a host controller that controls the entire vehicle. In the present embodiment, information related to the operation state of the power supply start switch 65 is input to the host ECU 61. The host ECU 61 functions as a monitoring unit that monitors the operation state of the power supply start switch 65.
The step-up control unit 60 acquires information related to the operation state of the power supply start switch 65 from the host ECU 61 by communication or the like, and determines whether or not it is in the external power supply mode based on the acquired information (S102 in FIG. 2).
Even if comprised in this way, there exists an effect similar to the said embodiment.

（第３実施形態）
本発明の第３実施形態による電力出力装置を図４に示す。
図４に示すように、電力出力装置３の給電口５０には、給電コネクタ５１が給電口５０に接続されているか否かを検出するコネクタ検出部６６が設けられる。コネクタ検出部６６により検出される給電コネクタ５１の接続状態に係る情報は、昇圧制御部６０に出力される。なお、第２実施形態にように、コネクタ検出部６６により検出される給電コネクタ５１の接続状態に係る情報が上位ＥＣＵ６１に入力され、昇圧制御部６０は、上位ＥＣＵ６１（図３参照）から給電コネクタ５１の接続状態に係る情報を取得するようにしてもよい。 (Third embodiment)
A power output apparatus according to a third embodiment of the present invention is shown in FIG.
As shown in FIG. 4, the power supply port 50 of the power output device 3 is provided with a connector detection unit 66 that detects whether or not the power supply connector 51 is connected to the power supply port 50. Information regarding the connection state of the power feeding connector 51 detected by the connector detection unit 66 is output to the boost control unit 60. As in the second embodiment, information related to the connection state of the power feeding connector 51 detected by the connector detection unit 66 is input to the host ECU 61, and the boost control unit 60 receives the power feeding connector from the host ECU 61 (see FIG. 3). Information regarding the connection state 51 may be acquired.

本実施形態では、昇圧制御部６０は、給電コネクタ５１の接続状態に基づき、外部給電モードか否かを判断する。すなわち、昇圧制御部６０は、給電コネクタ５１が給電口５０に接続された場合、外部給電モードであると判断する。また、昇圧制御部６０は、給電コネクタ５１が給電口５０に接続されていない場合、通常起動モードであると判断する。   In the present embodiment, the boost control unit 60 determines whether the external power supply mode is set based on the connection state of the power supply connector 51. That is, when the power supply connector 51 is connected to the power supply port 50, the boost control unit 60 determines that the external power supply mode is set. Further, when the power supply connector 51 is not connected to the power supply port 50, the boost control unit 60 determines that the normal activation mode is set.

フローチャートについて言及すると、本実施形態では、図２中のＳ１０２において、コネクタ検出部６６からの情報に基づき、給電口５０に給電コネクタ５１が接続されている場合、肯定判断し、給電口５０に給電コネクタ５１が接続されていない場合、否定判断する。
このように構成しても、外部給電モードか否かを適切に判断することができ、上記実施形態と同様の効果を奏する。 Referring to the flowchart, in the present embodiment, when the power supply connector 51 is connected to the power supply port 50 based on the information from the connector detection unit 66 in S102 in FIG. If the connector 51 is not connected, a negative determination is made.
Even if comprised in this way, it can be judged appropriately whether it is an external electric power feeding mode, and there exists an effect similar to the said embodiment.

（他の実施形態）
上記実施形態では、給電開始スイッチの操作状態、または、給電コネクタの接続状態に基づき、外部給電モードか否かを判断する。他の実施形態では、給電開始スイッチが給電開始状態であり、かつ、給電コネクタが給電部に接続された場合、外部給電モードであると判断する。また、給電開始スイッチが給電開始状態ではない、または、給電コネクタに給電部が接続されていない場合、外部給電モードではないと判断する。これにより、外部給電状態かどうかをより確実に判別することができる。
また、外部給電中か否かは、その他の情報を用いて判断してもよい。
さらにまた、第３実施形態のように、給電コネクタの接続状態に基づいて外部給電モードか否かを判断する場合、給電開始スイッチを省略してもよい。 (Other embodiments)
In the above embodiment, it is determined whether or not the external power supply mode is selected based on the operation state of the power supply start switch or the connection state of the power supply connector. In another embodiment, when the power supply start switch is in a power supply start state and the power supply connector is connected to the power supply unit, it is determined that the external power supply mode is set. Further, when the power supply start switch is not in the power supply start state or when the power supply unit is not connected to the power supply connector, it is determined that the external power supply mode is not set. Thereby, it is possible to more reliably determine whether or not the external power supply state is set.
Whether or not external power feeding is in progress may be determined using other information.
Furthermore, as in the third embodiment, when it is determined whether or not the external power supply mode is set based on the connection state of the power supply connector, the power supply start switch may be omitted.

上記実施形態では、第１の電圧変換部は昇圧コンバータである。他の実施形態では、例えば、燃料電池により発電される電力の電圧よりも、外部装置に供給する電圧の方が低い場合、第１の電圧変換部は、燃料電池により発電される電力の電圧を昇圧および降圧可能な昇降圧コンバータとしてもよい。
以上、本発明は、上記実施形態になんら限定されるものではなく、発明の趣旨を逸脱しない範囲において種々の形態で実施可能である。 In the above embodiment, the first voltage converter is a boost converter. In another embodiment, for example, when the voltage supplied to the external device is lower than the voltage of the power generated by the fuel cell, the first voltage conversion unit converts the voltage of the power generated by the fuel cell. A step-up / step-down converter capable of stepping up and stepping down may be used.
As mentioned above, this invention is not limited to the said embodiment at all, In the range which does not deviate from the meaning of invention, it can implement with a various form.

１、２、３・・・電力出力装置
１０・・・燃料電池
２０・・・蓄電部
３０・・・走行用ＭＧ（負荷）
４０・・・昇圧コンバータ（第１の電圧変換部）
４５・・・昇降圧コンバータ（第２の電圧変換部）
５０・・・給電口（給電部）
５１・・・給電コネクタ
６０・・・昇圧制御部
６１・・・上位ＥＣＵ（上位制御部） 1, 2, 3 ... Power output device 10 ... Fuel cell 20 ... Power storage unit 30 ... Traveling MG (load)
40: Boost converter (first voltage converter)
45 ... Buck-boost converter (second voltage converter)
50: Feeding port (feeding part)
51: Power feeding connector 60: Boost control unit 61: Upper ECU (upper control unit)

Claims (6)

燃料ガスと酸化剤ガスとの化学反応により電気エネルギを発生させ、発生した電気エネルギを負荷（３０）に供給する燃料電池（１０）と、
前記燃料電池により発電された電力を任意の電圧に変換して出力する第１の電圧変換部（４０）と、
前記燃料電池により発電された電力を充電可能な蓄電部（２０）と前記第１の電圧変換部との間に設けられる第２の電圧変換部（４５）と、
前記燃料電池により発電された電力を前記第１の電圧変換部と前記第２の電圧変換部との中間部から外部装置（７０）へ供給可能に構成される給電部（５０）と、
前記外部装置へ電力を供給する外部給電モードか否かを判断する給電判断手段、および、前記外部給電モードか否かに応じ、前記第１の電圧変換部から出力される電圧である出力電圧を制御する電圧制御手段を有する昇圧制御部（６０）と、
を備え、
前記電圧制御手段は、
前記外部給電モードではないと判断された場合、前記出力電圧を前記負荷に応じた駆動電圧とし、
前記外部給電モードであると判断された場合、前記出力電圧を前記外部装置に応じた供給電圧とすることを特徴とする電力出力装置。 A fuel cell (10) for generating electrical energy by a chemical reaction between a fuel gas and an oxidant gas and supplying the generated electrical energy to a load (30);
A first voltage converter (40) that converts the electric power generated by the fuel cell into an arbitrary voltage and outputs the voltage;
A second voltage converter (45) provided between the power storage unit (20) capable of charging the electric power generated by the fuel cell and the first voltage converter;
A power feeding unit (50) configured to be able to supply electric power generated by the fuel cell from an intermediate part between the first voltage conversion unit and the second voltage conversion unit to an external device (70);
Power supply determination means for determining whether or not the external power supply mode supplies power to the external device, and an output voltage that is a voltage output from the first voltage conversion unit according to whether or not the external power supply mode is selected A boost control unit (60) having voltage control means for controlling;
With
The voltage control means includes
When it is determined that the external power supply mode is not set, the output voltage is set as a drive voltage corresponding to the load,
When it is determined that the external power supply mode is set, the output voltage is set to a supply voltage corresponding to the external device. 前記昇圧制御部は、ユーザにより操作される給電開始スイッチ（６５）の操作状態、および、前記外部装置と前記給電部とを接続する給電コネクタ（５１）の前記給電部への接続状態の少なくとも一方を監視する監視手段を有することを特徴とする請求項１に記載の電力出力装置。   The boost control unit is at least one of an operation state of a power supply start switch (65) operated by a user and a connection state of the power supply connector (51) connecting the external device and the power supply unit to the power supply unit. The power output apparatus according to claim 1, further comprising monitoring means for monitoring the power. ユーザにより操作される給電開始スイッチ（６５）の操作状態、および、前記外部装置と前記給電部とを接続する給電コネクタ（５１）の前記給電部への接続状態の少なくとも一方を監視する監視手段を有する上位制御部（６１）をさらに備え、
前記昇圧制御部は、前記上位制御部から前記給電開始スイッチの操作状態に係る情報、および、前記給電コネクタの接続状態に係る情報の少なくとも一方を取得することを特徴とすることを特徴とする請求項１に記載の電力出力装置。 Monitoring means for monitoring at least one of an operation state of the power supply start switch (65) operated by a user and a connection state of the power supply connector (51) connecting the external device and the power supply unit to the power supply unit; A host control unit (61) having
The step-up control unit acquires at least one of information related to an operation state of the power supply start switch and information related to a connection state of the power supply connector from the host control unit. Item 4. The power output device according to Item 1. 前記給電判断手段は、前記給電開始スイッチが給電開始状態となった場合、前記外部給電モードであると判断することを特徴とする請求項２または３に記載の電力出力装置。   4. The power output apparatus according to claim 2, wherein the power supply determination unit determines that the external power supply mode is in effect when the power supply start switch enters a power supply start state. 5. 前記給電判断手段は、前記給電コネクタが前記給電部に接続された場合、前記外部給電モードであると判断することを特徴とする請求項２または３に記載の電力出力装置。   4. The power output apparatus according to claim 2, wherein the power supply determination unit determines that the external power supply mode is set when the power supply connector is connected to the power supply unit. 5. 前記給電判断手段は、前記給電開始スイッチが給電開始状態であり、かつ、前記給電コネクタが前記給電部に接続された場合、前記外部給電モードであると判断することを特徴とする請求項２または３に記載の電力出力装置。   The power supply determination means determines that the power supply start switch is in the external power supply mode when the power supply start switch is in a power supply start state and the power supply connector is connected to the power supply unit. 4. The power output device according to 3.
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