WO2014054560A1 - 燃料電池システム及び制御方法 - Google Patents
燃料電池システム及び制御方法 Download PDFInfo
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- WO2014054560A1 WO2014054560A1 PCT/JP2013/076492 JP2013076492W WO2014054560A1 WO 2014054560 A1 WO2014054560 A1 WO 2014054560A1 JP 2013076492 W JP2013076492 W JP 2013076492W WO 2014054560 A1 WO2014054560 A1 WO 2014054560A1
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- 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
- H01M8/04895—Current
- H01M8/0491—Current of fuel cell stacks
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- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
- B60L1/003—Supplying electric power to auxiliary equipment of vehicles to auxiliary motors, e.g. for pumps, compressors
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- B60L1/06—Supplying electric power to auxiliary equipment of vehicles to electric heating circuits fed by the power supply line using only one supply
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Definitions
- the present invention relates to a fuel cell system and a control method.
- the IV characteristic indicating the power generation characteristic of the fuel cell changes depending on the temperature of the fuel cell. Therefore, the IV characteristic of the fuel cell can be known by measuring the temperature of the fuel cell. However, since the temperature of the fuel cell changes depending on the measurement position and the wet state, it is difficult to accurately know the IV characteristics of the fuel cell only by the measured temperature.
- JP2000-357526A discloses a method for detecting current and voltage of a fuel cell and estimating IV characteristics based on the detected values.
- JP2000-357526A a load supplied with power from a fuel cell is controlled to change a current taken out from the fuel cell, and an IV characteristic is estimated from a relationship between the voltage of the fuel cell at this time and the current taken out.
- IV characteristics are extremely poor in extremely low temperature environments. For this reason, when a current is taken out from the fuel cell in order to estimate the IV characteristic in an extremely low temperature environment, there is a risk that a so-called voltage drop occurs in which the voltage of the fuel cell becomes lower than the minimum voltage.
- the present invention was invented to solve such a problem, and an object thereof is to suppress a voltage drop in an extremely low temperature environment.
- a fuel cell system includes a fuel cell, an external load to which power generated by the fuel cell is supplied, an auxiliary device to which power generated by the fuel cell is supplied, and the power generation characteristics of the fuel cell.
- a first permission unit that permits power supply from the fuel cell to the external load when the predetermined characteristics are obtained, and before the permission is lowered by the first permission unit, the power supply from the fuel cell to the auxiliary device causes the fuel cell to
- the warm-up control unit that performs the warm-up operation and the load of the auxiliary machine are changed to change the extraction current from the fuel cell within a predetermined range, and the power generation characteristics are estimated based on the power generation voltage of the fuel cell accompanying the change
- An estimation unit that detects the temperature of the fuel cell, and a prohibition unit that limits or prohibits the estimation of power generation characteristics by the estimation unit when the temperature of the fuel cell is equal to or lower than a first predetermined temperature.
- FIG. 1 is a schematic configuration diagram of a fuel cell system.
- FIG. 2 is a map showing IV characteristics of the fuel cell stack.
- FIG. 3 is a flowchart for explaining the activation control.
- FIG. 1 is a schematic configuration diagram of a fuel cell system 100.
- the fuel cell system 100 includes a fuel cell stack 1, a cathode gas supply / discharge device 2, an anode gas supply / discharge device 3, a stack cooling device 4, a power system 5, and a controller 6.
- the fuel cell stack 1 is formed by stacking several hundred fuel cells, and receives the supply of anode gas and cathode gas to generate electric power necessary for driving the vehicle.
- the fuel cell stack 1 includes an anode electrode side output terminal 11 and a cathode electrode side output terminal 12 as terminals for taking out electric power.
- the cathode gas supply / discharge device 2 is a device that supplies cathode gas to the fuel cell stack 1 and discharges cathode off-gas discharged from the fuel cell stack 1 to the outside air.
- the cathode gas supply / discharge device 2 includes a cathode gas supply passage 21, a filter 22, a cathode compressor 23, a cathode gas discharge passage 24, and a cathode gas pressure adjustment valve 25.
- the cathode gas supply passage 21 is a passage through which the cathode gas supplied to the fuel cell stack 1 flows.
- the cathode gas supply passage 21 has one end connected to the filter 22 and the other end connected to the cathode gas inlet hole of the fuel cell stack 1.
- the filter 22 removes foreign matters in the cathode gas taken into the cathode gas supply passage 21.
- the cathode compressor 23 is provided in the cathode gas supply passage 21.
- the cathode compressor 23 takes in air (outside air) as cathode gas through the filter 22 into the cathode gas supply passage 21 and supplies it to the fuel cell stack 1.
- the cathode gas discharge passage 24 is a passage through which the cathode off gas discharged from the fuel cell stack 1 flows.
- One end of the cathode gas discharge passage 24 is connected to the cathode gas outlet hole of the fuel cell stack 1, passes through the cathode gas pressure regulating valve 25, and the other end is an open end.
- a humidifier may be provided in the cathode gas supply passage 21 in order to humidify the fuel cell stack 1.
- the anode gas supply / discharge device 3 is a device that supplies anode gas to the fuel cell stack 1 and discharges anode off-gas discharged from the fuel cell stack 1 to the cathode gas discharge passage 24.
- the anode gas supply / discharge device 3 includes a high-pressure tank 31, an anode gas supply passage 32, a pressure regulating valve 33, an anode gas discharge passage 34, and a purge valve 35.
- the high pressure tank 31 stores the anode gas supplied to the fuel cell stack 1 in a high pressure state.
- the anode gas supply passage 32 is a passage for supplying anode gas from the high-pressure tank 31 to the fuel cell stack 1.
- the anode gas supply passage 32 has one end connected to the high pressure tank 31 and the other end connected to the anode gas inlet hole of the fuel cell stack 1.
- the pressure regulating valve 33 is provided in the anode gas supply passage 32.
- the pressure regulating valve 33 is controlled to be opened and closed by the controller 6 and adjusts the pressure of the anode gas flowing out from the high-pressure tank 31 to the anode gas supply passage 32 to a desired pressure.
- the anode gas discharge passage 34 is a passage through which the anode off gas discharged from the fuel cell stack 1 flows.
- the anode gas discharge passage 34 has one end connected to the anode gas outlet hole of the fuel cell stack 1 and the other end connected to the cathode gas discharge passage 24.
- the purge valve 35 is provided in the anode gas discharge passage 34.
- the purge valve 35 is controlled to be opened and closed by the controller 6 and controls the flow rate of the anode off gas discharged from the anode gas discharge passage 34 to the cathode gas discharge passage 24.
- the stack cooling device 4 is a device that cools the fuel cell stack 1 and maintains the fuel cell stack 1 at a temperature suitable for power generation.
- the stack cooling device 4 includes a cooling water circulation passage 41, a radiator 42, a bypass passage 43, a three-way valve 44, a circulation pump 45, a PTC heater 46, a first water temperature sensor 47, and a second water temperature sensor 48. Prepare.
- the cooling water circulation passage 41 is a passage through which cooling water for cooling the fuel cell stack 1 circulates.
- the radiator 42 is provided in the cooling water circulation passage 41.
- the radiator 42 cools the cooling water discharged from the fuel cell stack 1.
- the bypass passage 43 has one end connected to the cooling water circulation passage 41 and the other end connected to the three-way valve 44 so that the cooling water can be circulated by bypassing the radiator 42.
- the three-way valve 44 is provided in the cooling water circulation passage 41 on the downstream side of the radiator 42.
- the three-way valve 44 switches the cooling water circulation path according to the temperature of the cooling water. Specifically, when the temperature of the cooling water is relatively high, the cooling water circulation path is such that the cooling water discharged from the fuel cell stack 1 is supplied again to the fuel cell stack 1 via the radiator 42. Switch. On the contrary, when the temperature of the cooling water is relatively low, the cooling water discharged from the fuel cell stack 1 flows through the bypass passage 43 without passing through the radiator 42 and is supplied to the fuel cell stack 1 again. Switch the cooling water circulation path.
- the circulation pump 45 is provided in the cooling water circulation passage 41 on the downstream side of the three-way valve 44 and circulates the cooling water.
- the PTC heater 46 is provided in the bypass passage 43.
- the PTC heater 46 is energized when the fuel cell stack 1 is warmed up to raise the temperature of the cooling water.
- the first water temperature sensor 47 is provided in the cooling water circulation passage 41 on the upstream side of the radiator 42.
- the first water temperature sensor 47 detects the temperature of the cooling water discharged from the fuel cell stack 1.
- the second water temperature sensor 48 is provided in the cooling water circulation passage 41 between the circulation pump 45 and the fuel cell stack 1.
- the second water temperature sensor 48 detects the temperature of the cooling water supplied to the fuel cell stack 1.
- the power system 5 includes a current sensor 51, a voltage sensor 52, a drive motor 53, an inverter 54, a battery 55, a DC / DC converter 56, and auxiliary machinery 57.
- the current sensor 51 detects a current (hereinafter referred to as “output current”) extracted from the fuel cell stack 1.
- the voltage sensor 52 detects an inter-terminal voltage (hereinafter referred to as “output voltage”) between the anode electrode side output terminal 11 and the cathode electrode side output terminal 12.
- the drive motor 53 is a three-phase AC synchronous motor in which a permanent magnet is embedded in a rotor and a stator coil is wound around a stator.
- the drive motor 53 functions as an electric motor that is driven to rotate by receiving electric power supplied from the fuel cell stack 1 and the battery 55, and power generation that generates electromotive force at both ends of the stator coil during deceleration of the vehicle in which the rotor is rotated by external force. Function as a machine.
- the inverter 54 includes a plurality of semiconductor switches such as IGBT (Insulated Gate Bipolar Transistor).
- the semiconductor switch of the inverter 54 is controlled to be opened / closed by the controller 6, whereby DC power is converted into AC power or AC power is converted into DC power.
- the drive motor 53 functions as an electric motor
- the inverter 54 converts the combined DC power of the generated power of the fuel cell stack 1 and the output power of the battery 55 into three-phase AC power and supplies the three-phase AC power to the drive motor 53.
- the drive motor 53 functions as a generator, the regenerative power (three-phase AC power) of the drive motor 53 is converted into DC power and supplied to the battery 55.
- the battery 55 charges the regenerative power of the drive motor 53.
- the electric power charged in the battery 55 is supplied to the auxiliary machinery 57 and the drive motor 53 as necessary.
- the DC / DC converter 56 is a bidirectional voltage converter that raises and lowers the output voltage of the fuel cell stack 1. By controlling the output voltage of the fuel cell stack 1 by the DC / DC converter 56, the output current of the fuel cell stack 1, and thus the generated power (output current ⁇ output voltage) is controlled.
- the auxiliary machinery 57 includes the cathode compressor 23, the circulation pump 45, the PTC heater 46, and the like, and is driven by power supplied from the battery 55 or the fuel cell stack 1.
- the controller 6 includes a microcomputer having a central processing unit (CPU), a read only memory (ROM), a random access memory (RAM), and an input / output interface (I / O interface).
- the controller 6 includes an outside air temperature sensor 61 that detects the outside air temperature, and the start key on / off state.
- Signals from various sensors necessary for controlling the fuel cell system 100 such as a state (of charge) sensor 64 and a battery temperature sensor 65 for detecting the temperature of the battery 55 are input.
- the controller 6 controls the fuel cell system 100 based on these input signals.
- the IV characteristic indicating the power generation characteristic of the fuel cell stack 1 changes according to the temperature of the fuel cell stack 1.
- the IV characteristic decreases with respect to the reference IV as shown in FIG. 2, and the generated power of the fuel cell stack 1 decreases. Therefore, in the fuel cell system 100, when the temperature of the fuel cell stack 1 is low, the fuel cell stack 1 does not operate until the power generated by the fuel cell stack 1 exceeds the minimum driving power (predetermined characteristics) that can drive the vehicle. Power supply from the battery stack 1 to the drive motor 53 is prohibited, and vehicle travel is prohibited.
- the output current when the generated power of the fuel cell stack 1 is the minimum drive power is the current A
- the output voltage when the output current A is extracted is the voltage V1.
- the output voltage of the fuel cell stack 1 when the output current A is taken out from the fuel cell stack 1 becomes the voltage V1. Since the minimum drive power can be supplied to the drive motor 53, the power supply from the fuel cell stack 1 to the drive motor 53 is permitted, and the vehicle is allowed to travel.
- the power generated by the fuel cell stack 1 has reached the minimum drive power. If the temperature of the fuel cell stack 1 can be accurately detected, The generated power of the fuel cell stack 1 can be accurately detected from the IV characteristics based on the above.
- a first water temperature sensor 47 and a second water temperature sensor 48 are provided in the cooling water circulation passage 41. Since the temperature of the fuel cell stack 1 is detected based on the signal from the first water temperature sensor 47 and the signal from the second water temperature sensor 48, the actual temperature of the fuel cell stack 1 and the first water temperature sensor 47 and the temperature detected by the second water temperature sensor 48 may deviate, and the IV characteristics of the fuel cell stack 1 are accurately estimated based on the temperatures detected by the first water temperature sensor 47 and the second water temperature sensor 48. I can't.
- IV estimation for estimating the IV characteristics of the fuel cell stack 1 is performed.
- the relationship between the output current I and the difference ⁇ V between the reference voltage based on the reference IV and the actual output voltage is a linear function as shown in Equation (1) under the condition that the influence of the concentration overvoltage is small. It is known that it can be approximated.
- IV estimation is performed so that the drive motor 53 is driven from the fuel cell stack 1. It is possible to accurately determine whether or not electric power can be supplied.
- the IV characteristics become extremely poor at extremely low temperatures, and when the output current of the fuel cell stack 1 is changed within a predetermined range to perform IV estimation, the power generation of the fuel cell stack 1 becomes unstable, and the fuel cell stack A voltage drop occurs in which the output voltage of 1 becomes lower than the minimum guaranteed voltage.
- the minimum guaranteed voltage is the minimum pressure of the output voltage at which the fuel cell stack 1 can operate without abnormal performance degradation.
- the voltage of each cell of the fuel cell stack 1 must not be lower than a predetermined voltage. Therefore, when the output voltage of the fuel cell stack 1 is lower than the minimum guaranteed voltage, the fuel cell The system 100 is stopped. Therefore, in the present embodiment, start-up control of the fuel cell system 100 is performed as described below.
- step S100 the controller 6 detects the temperature of the cooling water discharged from the fuel cell stack 1 by the first water temperature sensor 47, and detects the temperature of the cooling water supplied to the fuel cell stack 1 by the second water temperature sensor 48. To do. Then, the controller 6 sets the lower temperature as the stack cooling water temperature T.
- step S101 the controller 6 compares the stack cooling water temperature T with the immediate startup temperature (third predetermined temperature) T1.
- the immediate startup temperature T1 is a temperature at which the temperature of the fuel cell stack 1 is sufficiently high and the generated power of the fuel cell stack 1 can be determined to be always equal to or higher than the minimum driving power.
- the immediate startup temperature T1 is 50 ° C., for example.
- the process proceeds to step S111 when the stack cooling water temperature T is equal to or higher than the immediate activation temperature T1, and proceeds to step S102 when the stack cooling water temperature T is lower than the immediate activation temperature T1.
- step S102 the controller 6 compares the stack cooling water temperature T with the immediate startup temperature T1 and the IV estimation prohibition temperature T2.
- the IV estimation prohibition temperature (first predetermined temperature) T2 is such that when the output current of the fuel cell stack 1 is changed within a predetermined range in order to perform IV estimation, the voltage of the fuel cell stack 1 becomes lower than the minimum guaranteed voltage. Temperature. For example, the IV estimation prohibition temperature T2 is ⁇ 35 ° C.
- the process proceeds to step S103 when the stack cooling water temperature T is lower than the immediate start temperature T1 and higher than the IV estimated prohibition temperature T2, and proceeds to step S103 when the stack cooling water temperature T is equal to or lower than the IV estimated prohibition temperature T2. Proceed to
- step S103 the controller 6 performs IV estimation. Specifically, the controller 6 controls the power consumed by the auxiliary devices 57 and the charge / discharge power of the battery 55 to change the output current of the fuel cell stack 1 by a predetermined width, and outputs it by the current sensor 51. The current is detected, the output voltage is detected by the voltage sensor 52, and IV estimation is performed based on the detected output current and the detected output voltage.
- step S104 the controller 6 performs a warm-up operation. Specifically, the controller 6 performs the warm-up operation by increasing the generated power of the fuel cell stack 1 above the maximum efficiency operating point of the fuel cell system 100 during normal operation and increasing the amount of self-heating generated by power generation. The power generated by the fuel cell stack 1 is consumed by the auxiliary devices 57, and the energy balance of the fuel cell system 100 is adjusted by adjusting the power consumption of the PTC heater 46 and the cathode compressor 23 and the charging power to the battery 55. keep.
- the PTC heater 46 which is an auxiliary machinery 57, not only consumes the electric power generated by the fuel cell stack 1, but also warms the cooling water by self-heating, and circulates the warmed cooling water to the fuel cell stack 1 to thereby circulate the fuel cell stack. 1 warm-up can be further promoted.
- the fuel cell stack 1 is also warmed up by heat generated by power generation.
- step S105 the controller 6 calculates the output voltage when the output current corresponding to the minimum driving power is taken out from the fuel cell stack 1 from the IV characteristics estimated by the IV estimation, and from these values, the current power that can be generated. Is calculated.
- step S106 the controller 6 compares the power that can be generated and the minimum drive power. The process proceeds to step S111 when the power that can be generated is equal to or greater than the minimum drive power, and proceeds to step S107 when the power that can be generated is lower than the minimum drive power.
- step S107 the controller 6 compares the stack cooling water temperature T with the warm-up end temperature (second predetermined temperature) T3.
- the warm-up end temperature T3 is a temperature lower than the immediate start temperature T1 and higher than 0 ° C., for example, 10 ° C.
- the warm-up end temperature T3 is a temperature at which it can be determined that the warm-up of the fuel cell stack 1 proceeds and the power that can be generated by the fuel cell stack 1 is equal to or higher than the minimum drive power.
- the controller 6 determines that the warm-up of the fuel cell stack 1 has ended when the stack cooling water temperature T becomes equal to or higher than the warm-up end temperature T3 even when IV estimation cannot be performed accurately due to, for example, a malfunction of the voltage sensor 52. To do.
- the process proceeds to step S111 when the stack cooling water temperature T is equal to or higher than the warm-up end temperature T3, and proceeds to step S110 when the stack cooling water temperature T is lower than the warm-up end temperature T3.
- step S102 If it is determined in step S102 that the stack cooling water temperature T is lower than the IV estimation prohibition temperature T2, the controller 6 prohibits IV estimation in step S108.
- the controller 6 prohibits IV estimation in step S108.
- step S109 the controller 6 performs a warm-up operation. Specifically, the controller 6 warms up the fuel cell stack 1 in the same manner as in step S104, but here supplies the fuel cell stack 1 to the auxiliary devices 57 within a range where the output voltage of the fuel cell stack 1 does not become lower than the minimum guaranteed voltage. Set the power to be high.
- step S110 the controller 6 detects the temperature of the cooling water discharged from the fuel cell stack 1 by the first water temperature sensor 47, and detects the temperature of the cooling water flowing into the fuel cell stack 1 by the second water temperature sensor 48. . Then, the controller 6 updates the lower temperature as the stack cooling water temperature T. Thereafter, the process returns to step S102. In the subsequent processes, the stack cooling water temperature T updated in step S110 is used.
- step S111 the READY lamp is turned on to permit power supply from the fuel cell stack 1 to the drive motor 53.
- the power consumed by the auxiliary machinery 57 is changed to change the output current of the fuel cell stack 1 by a predetermined width, and based on the output current and the output voltage.
- the IV estimation is prohibited, so that the output current is changed by a predetermined width, thereby generating the power of the fuel cell stack 1. It becomes possible to prevent the voltage of the fuel cell stack 1 from becoming lower than the minimum guaranteed voltage and to prevent the voltage drop from occurring.
- the IV characteristic is so low that the generated current of the fuel cell stack 1 is increased by the IV estimation request so as to decrease to the minimum guaranteed voltage. Since it is clear that power supply cannot be permitted, IV estimation is prohibited, but the predetermined width for changing the output current of the fuel cell stack 1 is reduced, or the output current of the fuel cell stack 1 is decreased, A predetermined width for changing the output current may be secured. In this way, IV estimation may be limited.
- the output current of the fuel cell stack 1 is lowered without changing the operating point of the auxiliary machinery 57, the shortage of electric power is discharged from the battery 55, so that the discharge capacity of the battery 55 is taken into consideration. There is a need. Also by this, it can suppress that the voltage of the fuel cell stack 1 becomes lower than the minimum guarantee voltage, and can suppress that a voltage drop generate
- the stack cooling water temperature T becomes equal to or higher than the warm-up end temperature T3
- the power supply from the fuel cell stack 1 to the drive motor 53 is permitted, but the first water temperature sensor 47 and the second water temperature sensor 48 in the initial stage of startup In the internal temperature of the fuel cell stack 1, a temperature difference is generated due to a difference in heat capacity and heat dissipation characteristics, and the internal temperature of the fuel cell stack 1 may not be accurately detected by the first water temperature sensor 47 and the second water temperature sensor 48. is there. Therefore, in order to determine that the internal cooling water of the fuel cell stack 1 has reached the first water temperature sensor 47 and the internal temperature of the fuel cell stack 1 can be detected by the first water temperature sensor 47, start control is started.
- the power supply from the fuel cell stack 1 to the drive motor 53 can be permitted more accurately.
- the predetermined amount is a preset amount, and specifically is a cooling water volume from the fuel cell stack 1 to the first water temperature sensor 47.
- the second permission unit may be enabled when the elapsed time since the start of the circulation pump 45 has reached a predetermined time or more.
- the predetermined time is a preset time, and specifically, a time when the integrated value of the flow rate of the cooling water passing through the first water temperature sensor 47 becomes equal to or larger than the cooling water volume from the fuel cell stack 1 to the first water temperature sensor 47. It is. Even in these cases, even when IV estimation cannot be performed accurately, electric power can be supplied from the fuel cell stack 1 to the drive motor 53.
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Abstract
Description
Claims (8)
- 燃料電池と、
前記燃料電池によって発電した電力が供給される外部負荷と、
前記燃料電池によって発電した電力が供給される補機と、
前記燃料電池の発電特性が、所定特性となった場合に、前記燃料電池から前記外部負荷への電力供給を許可する第1許可手段と、
前記第1許可手段によって前記許可が下りる前に、前記燃料電池から前記補機への電力供給により前記燃料電池の暖機運転を行う暖機時制御手段と、
前記補機の負荷を変化させて前記燃料電池からの取り出し電流を所定幅で変化させるとともに、変化に伴う前記燃料電池の発電電圧に基づいて前記発電特性を推定する推定手段と、
前記燃料電池の温度を検出する温度検出手段と、
前記燃料電池の温度が、第1所定温度以下では、前記推定手段による前記発電特性の推定を制限、若しくは禁止する禁止手段と、を備える燃料電池システム。 - 請求項1に記載の燃料電池システムであって、
前記第1所定温度は、前記補機の負荷を変化させて前記燃料電池からの取り出し電流を前記所定幅で変化させると前記燃料電池の電圧が前記燃料電池の最低保障電圧よりも低くなる温度である燃料電池システム。 - 請求項1または2に記載の燃料電池システムであって、
前記温度検出手段は、前記燃料電池の冷却水の温度を検出する水温センサである燃料電池システム。 - 請求項1乃至3のいずれかに記載の燃料電池システムであって、
前記第1許可手段とは別に、前記燃料電池の温度が0℃以上の第2所定温度以上の場合には、前記燃料電池から前記外部負荷への電力供給を許可する第2許可手段を備える燃料電池システム。 - 請求項1乃至4のいずれかに記載の燃料電池システムであって、
冷却水を前記燃料電池に循環させるポンプを備え、
前記第1許可手段、第2許可手段とは別に、ポンプ流量の積算値が所定量以上の場合に、前記燃料電池から前記外部負荷への電力供給を許可する第3許可手段を備える燃料電池システム。 - 請求項1乃至4のいずれかに記載の燃料電池システムであって、
冷却水を前記燃料電池に循環させるポンプを備え、
前記第1許可手段、第2許可手段とは別に、前記ポンプを起動してから所定時間以上の場合に、前記燃料電池から前記外部負荷への電力供給を許可する第3許可手段を備える燃料電池システム。 - 請求項2乃至6のいずれかに記載の燃料電池システムであって、
前記第1許可手段は、前記燃料電池で発電を開始した時の前記燃料電池の温度が前記第1所定温度よりも高い第3所定温度以上の場合に、前記燃料電池から前記外部負荷への電力供給を許可する燃料電池システム。 - 燃料電池と、
前記燃料電池によって発電した電力が供給される外部負荷と、
前記燃料電池によって発電した電力が供給される補機とを備えた燃料電池システムを制御する制御方法であって、
前記燃料電池の発電特性が、所定特性となった場合に、前記燃料電池から前記外部負荷への電力供給を許可し、
前記許可が下りる前に、前記燃料電池から前記補機への電力供給により前記燃料電池の暖機運転を行い、
前記補機の負荷を変化させて前記燃料電池からの取り出し電流を所定幅で変化させるとともに、変化に伴う前記燃料電池の発電電圧に基づいて前記発電特性を推定し、
前記燃料電池の温度を検出し、
前記燃料電池の温度が、第1所定温度以下では、前記発電特性の推定を制限、若しくは禁止する制御方法。
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CA2886965A CA2886965C (en) | 2012-10-01 | 2013-09-30 | Fuel cell system and control method |
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JP2021061104A (ja) * | 2019-10-03 | 2021-04-15 | 本田技研工業株式会社 | システム、システムの制御方法、およびプログラム |
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CA2886965C (en) | 2018-07-24 |
EP2905834A1 (en) | 2015-08-12 |
CN104704666B (zh) | 2018-01-02 |
CA2886965A1 (en) | 2014-04-10 |
EP2905834B1 (en) | 2017-11-22 |
CN104704666A (zh) | 2015-06-10 |
JPWO2014054560A1 (ja) | 2016-08-25 |
US20150280262A1 (en) | 2015-10-01 |
US9634342B2 (en) | 2017-04-25 |
JP5928603B2 (ja) | 2016-06-01 |
EP2905834A4 (en) | 2015-11-18 |
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