JP5149739B2 - Fuel cell power generation system and operation display device used therefor - Google Patents

Description

  The present invention relates to a fuel cell power generation system and an operation display device used therefor.

Conventionally, this type of fuel cell power generation system has a polymer electrolyte fuel cell and a hot water storage tank that stores hot water using heat generated during power generation by the fuel cell. A domestic fuel cell cogeneration system that supplies hot water from a hot water storage tank to a household while supplying it to some electrical appliances used at home has been proposed (for example, JP-A-2001-210343). This system is designed to be installed outdoors at home.
JP2001-210343

  In such a fuel cell power generation system, although a fuel cell and a hot water storage tank are installed outdoors, it is usual to install an operation panel for operating the system indoors to facilitate the operation of the system. It is difficult to set the operation state of the system when the power used in the operation is unknown or the operation state of the fuel cell is unknown.

  One of the objects of the fuel cell power generation system and the operation display device used therefor of the present invention is to easily set the operating state of the system. Another object of the fuel cell power generation system of the present invention and the operation display device used therefor is to display information about the system such as the operating state of the system and the power used. Furthermore, the fuel cell power generation system of the present invention has an object to display system abnormality and the necessity of inspection.

  The fuel cell power generation system of the present invention and the operation display device used therein employ the following means in order to achieve at least a part of the above-described object.

The first fuel cell power generation system of the present invention includes:
A fuel cell that generates electricity by receiving fuel supply; and
Hot water storage means for storing at least water heated using heat from the fuel cell;
An operation display unit having an operation unit for operating the fuel cell; and a display unit for displaying the output power from the fuel cell and the amount of hot water stored in the hot water storage unit;
Power conversion supply means capable of converting the output power from the fuel cell into desired power and supplying the power supply line from another system power supply to the load;
Used power detecting means for detecting used power used in the load;
With
The operation part of the operation display means is a part for setting an operation mode of the fuel cell by selectively inputting from a plurality of preset operation modes,
The display unit of the operation display means displays the used power, and displays “automatic” when the automatic mode following the fluctuation of the used power is set as the operation mode, and displays the used power as the operation mode. It is a part that displays "manual" when the manual mode is set to perform a constant operation regardless of fluctuations,
This is the gist.

In the first fuel cell power generation system of the present invention, since the output power from the fuel cell and the hot water storage state of the hot water storage means are displayed on the display unit of the operation display means, the output power from the fuel cell and the hot water storage state of the hot water storage means are displayed. Can be informed. Therefore, the operation of the fuel cell can be operated by the operation unit while observing the output power from the fuel cell and the hot water storage state of the hot water storage means. As a result, the operating state of the system can be easily set. In addition, it is possible to notify the used power used by the load and to operate the fuel cell while watching the used power used by the load. Furthermore, a more accurate value of the power used can be displayed. In addition, it is possible to easily operate the fuel cell. Here, in the operation of the fuel cell, one for setting the output power from the fuel cell, one for setting a desired operation mode from a plurality of operation modes set in advance as the operation mode of the fuel cell, Various operations such as setting the degree of driving are included. The hot water storage state of the hot water storage means includes various state quantities such as the amount of hot water stored, water level, temperature, and the amount of hot water that can be supplied. Furthermore, the display section of the operation display means is a section for displaying the currently set power generation mode among the three power generation modes of “high”, “medium”, and “low” as the power generation mode of the fuel cell. You can also. Further, the operation display means may be means for displaying the hot water storage amount at that time relative to the maximum hot water storage amount that can be stored in the hot water storage means on the display unit.

  Such a first fuel cell power generation system of the present invention comprises output power detection means for detecting output power from the fuel cell, and hot water storage state detection means for detecting a hot water storage state of the hot water storage means, and the operation display. The means may be means for inputting and displaying the detected output power from the fuel cell and the detected hot water storage state of the hot water storage means on the display unit. By doing so, it is possible to display more accurate values of the output power from the fuel cell and the hot water storage state of the hot water storage means.

(Delete)

  In the first fuel cell power generation system of the present invention having a power conversion supply means, the operation display means supplies power supplied to the load from the other system power supply instead of or together with the power usage. It can also be a means for displaying on the display unit. In this way, it is possible to notify the supply power supplied from the other system power supply and to operate the fuel cell while viewing the supply power supplied from the other system power supply.

The second fuel cell power generation system of the present invention comprises:
A fuel cell that generates electricity by receiving fuel supply; and
Power conversion supply means capable of converting DC power from the fuel cell into desired power and supplying the power supply line from another system power source to the load;
An operation display means for operating the operation of the fuel cell; and an operation display means for displaying output power from the fuel cell and supply power supplied to the load from the other system power supply;
Equipped with a,
The operation part of the operation display means is a part for setting an operation mode of the fuel cell by selectively inputting from a plurality of preset operation modes,
The display unit of the operation display means displays the used power used by the load, and displays “automatic” when an automatic mode that follows the fluctuation of the used power is set as the operation mode. It is a part that displays "manual" when a manual mode for performing a constant operation regardless of fluctuations in the power used is set as a mode.
This is the gist.

  In the second fuel cell power generation system of the present invention, since the output power from the fuel cell and the supply power supplied from the other system power source to the load are displayed on the display unit of the operation display means, the output from the fuel cell is displayed. It is possible to notify the supply power supplied to the load from the power or other system power supply. Therefore, the operation of the fuel cell can be operated by the operation unit while observing the output power from the fuel cell and the supplied power supplied from the other system power source to the load. The operation of operating the fuel cell is the same as that of the first fuel cell power generation system of the present invention.

In the second fuel cell power generation system of the present invention, the display unit of the operation display means is a currently set power generation mode among the three power generation modes of “high”, “medium”, and “low” as the power generation mode of the fuel cell. It can also be a part that displays. The operation display means includes: output power detection means for detecting output power from the fuel cell; and supply power detection means for detecting supply power supplied from the other system power supply to a load. The detected output power of the fuel cell and the detected supply power supplied to the load from the other system power supply may be input and displayed on the display unit. In this way, it is possible to display more accurate values of the output power from the fuel cell and the supply power supplied from the other system power supply to the load.

  Further, in the second fuel cell power generation system of the present invention, the operation display means is means for displaying, on the display unit, used power used in the load instead of the supplied power or together with the supplied power. It can also be. In this way, it is possible to notify the used power used in the load and to operate the fuel cell while watching the used power used in the load.

  In the first or second fuel cell power generation system of the present invention, the display section of the operation display means may be a section that displays numerical values. In this way, the output power of the fuel cell, the hot water storage state of the hot water storage means, the supplied power supplied from another system power supply, etc. can be reported as numerical values.

  Further, in the first or second fuel cell power generation system of the present invention, the display unit of the operation display means may be a unit that displays by a pictorial display that can be changed step by step. By so doing, it is possible to notify the output power of the fuel cell, the hot water storage state of the hot water storage means, the supplied power supplied from the other system power supply, etc. as a pictorial display that can be changed step by step. Here, in the “picture display that can be changed in stages”, a graph display showing changes in quantity by changing the length in stages and changes in quantity by changing the thickness in stages are shown. The direction of the arrow indicates the direction of the arrow line, the number of characters to be displayed is changed step by step, the number of characters is displayed to change the amount, and the amount of paint is changed by changing the amount of the step by step. Various displays such as a character display are included.

(Delete)

  In the first or second fuel cell power generation system of the present invention, the operation display means may be means for displaying an abnormality of the system. In this way, it is possible to quickly notify the system abnormality.

  In the first or second fuel cell power generation system of the present invention, the operation display means may be a means for performing a display prompting inspection of the system. In this way, the need to check the system can be notified.

The first operation display device of the present invention includes:
A fuel cell that generates power upon receipt of fuel supply, hot water storage means that stores at least water heated by using heat from the fuel cell, and output power from the fuel cell that converts the output power to desired power to another system power source An operation display device for use in a fuel cell power generation system comprising power conversion supply means capable of being supplied to a power supply line from a power source to a load ,
An operation unit for operating the fuel cell;
A display for displaying the output power from the fuel cell and the amount of hot water stored in the hot water storage means;
With
The operation unit is a unit that sets an operation mode of the fuel cell by selectively inputting from a plurality of preset operation modes,
The display unit displays the used power used in the load, and displays “automatic” when the automatic mode that follows the fluctuation of the used power is set as the operation mode, and the used as the operation mode. It is a part that displays "manual" when the manual mode is set to perform a constant operation regardless of power fluctuations,
This is the gist.

In the first operation display device of the present invention, since the output power from the fuel cell and the hot water storage state of the hot water storage means are displayed on the display unit, the output power from the fuel cell and the hot water storage state of the hot water storage means can be notified. it can. Therefore, the operation of the fuel cell can be operated by the operation unit while viewing the output power from the fuel cell and the hot water storage state of the hot water storage means. As a result, the operating state of the system can be easily set. The operation of the fuel cell and the hot water storage state of the hot water storage means are the same as in the first fuel cell power generation system of the present invention. Here, the display unit may display a currently set power generation mode among the three power generation modes of “high”, “medium”, and “low” as the power generation mode of the fuel cell. Further, the display unit may be a unit that displays a hot water storage amount at that time with respect to a maximum hot water storage amount that can be stored in the hot water storage means.

The second operation display device of the present invention is
Fuel cell power generation comprising: a fuel cell that generates power upon receiving fuel supply; and power conversion supply means that converts DC power from the fuel cell into desired power and can be supplied to a power supply line from another system power source to a load. An operation display device used in the system,
An operation unit for operating the fuel cell;
A display unit for displaying output power from the fuel cell and power supplied to the load from the other system power supply;
Equipped with a,
The operation unit is a unit that sets an operation mode of the fuel cell by selectively inputting from a plurality of preset operation modes,
The display unit displays the used power used in the load, and displays “automatic” when the automatic mode that follows the fluctuation of the used power is set as the operation mode, and the used as the operation mode. It is a part that displays "manual" when the manual mode is set to perform a constant operation regardless of power fluctuations,
This is the gist.

In the second operation display device of the present invention, the output power from the fuel cell and the supply power supplied from the other system power source to the load are displayed on the display unit. Therefore, the output power from the fuel cell and the other system power source are displayed. To supply power supplied to the load. Therefore, the operation of the fuel cell can be operated by the operation unit while viewing the output power from the fuel cell and the supplied power supplied from the other system power source to the load. As a result, the operating state of the system can be easily set. The operation of operating the fuel cell is the same as that of the first fuel cell power generation system of the present invention. Here, the display unit may display a currently set power generation mode among the three power generation modes of “high”, “medium”, and “low” as the power generation mode of the fuel cell.

In the second operation display device of the present invention, the display unit may be a unit that displays power used in the load instead of the supplied power or together with the supplied power. In this way, it is possible to notify the used power used in the load and to operate the fuel cell while watching the used power used in the load.
The second name of the present invention is:
It is a summary to provide.

  Next, the best mode for carrying out the present invention will be described using examples.

FIG. 1 is a configuration diagram showing an outline of the configuration of a fuel cell power generation system 20 according to an embodiment of the present invention. As shown in the figure, the fuel cell power generation system 20 of the embodiment includes a reformer 30 that receives supply of city gas (13A) from a gas pipe 22 and reforms the city gas into hydrogen-rich reformed gas, and a reformer. A CO selective oxidation unit 34 that reduces carbon monoxide in the gas and uses it as a fuel gas, a fuel cell 40 that receives supply of the fuel gas and air, and generates power by an electrochemical reaction, and a cooling water and hot water storage for the fuel cell 40 A heat exchanger 42 that performs heat exchange with the low-temperature water in the tank 44, a DC / DC converter 52 that adjusts the voltage and current of the DC power from the fuel cell 40 to convert it to desired DC power, and the converted DC An inverter 54 that supplies power to the power line 12 that converts power into AC power having the same phase as that of the commercial power supply 10 and supplies power from the commercial power supply 10 to the load 16 via the circuit breaker 14, a voltage or Current A DC / DC converter 56 that functions as an auxiliary power supply by stepping down a part of the adjusted DC power, a load wattmeter 58 that detects load power consumed by the load 16, and an electronic control unit 60 that controls the entire system. And an operation display panel 70 for displaying the operation state of the system and operating the operation of the system.

  The reformer 30 has the following equation (1) based on city gas supplied from the gas pipe 22 through the control valve 24, the booster pump 26, and the desulfurizer 27 excluding sulfur, and water vapor supplied through a pipe (not shown). And the hydrogen-rich reformed gas is generated by the steam reforming reaction and shift reaction of the following formula (2). The reformer 30 is provided with a combustion section 32 that supplies heat necessary for such a reaction. The combustion section 32 is supplied with city gas from a gas pipe 22 through a control valve 24 and a booster pump 28. It has become so. Further, the exhaust gas on the anode side of the fuel cell 40 is supplied to the combustion unit 32 so that unreacted hydrogen in the anode off-gas can be used as fuel.

CH ₄ + H ₂ O → CO + 3H ₂ (1)
CO + H ₂ O → CO ₂ + H ₂ (2)

  The CO selective oxidation unit 34 is modified by a carbon monoxide selective oxidation catalyst (for example, a catalyst made of an alloy of platinum and ruthenium) that receives supply of air from a pipe (not shown) and selects and oxidizes carbon monoxide in the presence of hydrogen. Carbon monoxide in the gas is selectively oxidized to obtain a hydrogen-rich fuel gas having a very low carbon monoxide concentration (about several ppm in the embodiment).

  The fuel cell 40 includes a single cell composed of an electrolyte membrane, an anode electrode and a cathode electrode that sandwich the electrolyte membrane, a fuel gas and air to the anode electrode and the cathode electrode, and a separator that forms a partition between the cells. It is configured as a solid polymer fuel cell formed by stacking a plurality of layers, and generates power by an electrochemical reaction between hydrogen in the fuel gas from the CO selective oxidation unit 34 and oxygen in the air from the blower 41. The fuel cell 40 is formed with a circulating cooling water flow path, and is maintained at an appropriate temperature (in the embodiment, about 80 to 90 ° C.) by circulating the cooling water. A heat exchanger 42 is provided in the cooling water circulation flow path, and the low temperature water supplied from the hot water storage tank 44 by the pump 46 is heated by heat exchange with the cooling water of the fuel cell 40 so that the hot water storage tank. The hot water is stored in 44.

  An output terminal (not shown) of the fuel cell 40 is connected to the power line 12 from the commercial power supply 10 to the load 16 via the DC / DC converter 52, the inverter 54, and the circuit breaker 55. The AC power is converted into AC power having the same phase as that of the commercial power supply 10, added to the AC power from the commercial power supply 10, and supplied to the load 16. Since the DC / DC converter 52 and the inverter 54 are configured as a general DC / DC converter circuit and an inverter circuit, detailed description thereof is omitted. The load 16 is connected to the power line 12 via the circuit breaker 18.

  The power line branched from the output side of the DC / DC converter 52 has a DC / DC functioning as a direct current power source for supplying direct current power to the actuators of the control valve 24 and auxiliary devices such as the boost pumps 26 and 28, the blower 41 and the pump 46. A DC converter 56 is connected.

  The electronic control unit 60 is configured as a microprocessor centered on the CPU 62. In addition to the CPU 62, a ROM 64 for storing processing programs, a RAM 66 for temporarily storing data, an input / output port and a communication port (not shown) Is provided. The electronic control unit 60 includes an output power Pfc from the wattmeter 51 attached to the output terminal of the fuel cell 40, an output current and voltage from a current sensor and voltage sensor (not shown) in the inverter 54, and a load wattmeter 58. The load power Po, the temperature T of hot water stored in the hot water storage tank 44 from the temperature sensor 48 attached to the hot water storage tank 44, and hot water storage in the hot water storage tank 44 from the water level sensor 49 also attached to the hot water storage tank 44 are stored. The water level L of the warm water, each temperature from a temperature sensor (not shown) attached to the reformer 30, the CO selective oxidation unit 34, and the fuel cell 40, an operation signal from the operation display panel 70, and the like are input via the input port. Yes. Further, the electronic control unit 60 provides a drive signal to the actuator of the control valve 24, boost pumps 26, 28, blower 41, circulation pump 43, pump 46, ignition signal to the combustion section 32, DC / DC converter 52, A control signal to the DC / DC converter 56, a switching control signal to the inverter 54, a drive signal to the circuit breaker 55, a display signal to the operation display panel 70, and the like are output via the output port.

  2 is an external view showing an example of the operation display panel 70 provided in the fuel cell power generation system 20 of the embodiment, and FIG. 3 is an external view showing the operation display panel 70 in a state where the operation door 73 is opened. As shown in the figure, the operation display panel 70 includes an operation unit 72 that performs operation of the system and a display unit 80 that displays the operation state of the system. Such an operation display panel 70 may be installed outdoors similarly to the fuel cell 40, the hot water tank 44, etc., or only the operation display panel 70 may be installed indoors.

  As illustrated in FIG. 3, the operation unit 72 includes an operation / stop switch 74 for instructing system operation and operation stop, a display ON / OFF switch 75 for switching on / off the display on the display unit 80, and power generation of the fuel cell 40. A power generation mode switch 76 for switching modes is provided as a seat switch, and each switch signal is input to an input port of the electronic control unit 60. The electronic control unit 60 controls the operation of the system, particularly the fuel cell, based on each input switch signal. Since such operation control does not form the core of the present invention, further explanation is omitted. It should be noted that the operation / stop switch 74 and the display ON / OFF switch 75 can be operated even when the operation door 73 is closed at a position matching the operation / stop switch 74 and the display ON / OFF switch 75 of the operation door 73. An operation / stop switch operation unit 74a and a display ON / OFF switch operation unit 75a are provided.

  In the embodiment, the display unit 80 is configured by a liquid crystal display. As shown in FIGS. 2 and 3, the power generation mode of the fuel cell 40, the power generation amount of the fuel cell 40, the power used by the load 16, The amount of hot water stored in the hot water tank 44, the time, and the like are displayed by numerical values and a picture display showing the change of the amount by a stepwise change. In the embodiment, the currently set mode is displayed among the three modes of “high”, “medium”, and “low.” The amount of power generation is attached to the output terminal of the fuel cell 40. The output power Pfc detected by the wattmeter 51 is displayed as a numerical value and is displayed as a stepwise graphic display.The power used by the load 16 is from the commercial power supply 10 to the load 16. The load power Po detected by the load wattmeter 58 attached to the power line 12 for supplying power is displayed as a numerical value and also displayed as a stepwise graphic display similar to the power generation amount. Then, it is displayed as a stepwise graphic display based on the water level L detected by the water level sensor 49. When the display unit 80 displays an abnormality such as filter clogging at the bottom, To view the display to prompt the periodic inspection operation or on a regular basis of a predetermined period of time.

  According to the fuel cell power generation system 20 of the embodiment described above, the power generation mode of the fuel cell 40, the power generation amount of the fuel cell 40, the power used in the load 16, the hot water storage tank on the display unit 80 of the operation display panel 70. The amount of hot water stored in 44, the time, etc. can be notified by a numerical value and a picture display showing the change in the amount by a stepwise change. Therefore, since the operation of setting the power generation mode of the fuel cell 40 can be performed while viewing such information, the operation of the system can be more appropriately and easily operated. Moreover, the amount of power generated by the fuel cell 40, the power used by the load 16, and the amount of hot water stored in the hot water storage tank 44 are displayed based on values detected by the wattmeter 51, load wattmeter 58, and water level sensor 49. Therefore, a more accurate value can be displayed.

  According to the fuel cell power generation system 20 of the embodiment, since system abnormality such as filter clogging is displayed, it is possible to promptly notify the system abnormality. In addition, according to the fuel cell power generation system 20 of the present invention, since the display for prompting the periodic inspection is displayed, it is possible to inform the execution time of the periodic inspection. As a result, the system can be stably operated in a good state.

  In the fuel cell power generation system 20 of the embodiment, the display unit 80 of the operation display panel 70 displays the power generation mode of the fuel cell 40, the power generation amount of the fuel cell 40, the power used by the load 16, the hot water storage amount of the hot water tank 44, Although the time and the like are displayed as numerical values and a picture display showing a change in quantity by a step change, the display of the numerical values and the picture display is not limited to the embodiment, and various displays such as a display unit 80 may display only a numerical value without displaying a picture display, and conversely, may display only a picture display without displaying a numerical value. As a modified example of displaying the same information as that of the display unit 80 of the operation display panel 70 of the embodiment, the way of graphical display can be different as in the display unit illustrated in FIG. In the display unit illustrated in FIG. 4, “automatic” is displayed as the operation mode (power generation mode) when the automatic mode that follows the fluctuation of the power used by the load 16 is set. “Manual” is displayed when the manual mode in which a constant operation is performed regardless of fluctuations in the used power used.

  In the fuel cell power generation system 20 of the embodiment, the power generation amount of the fuel cell 40, the power used by the load 16, and the hot water storage amount of the hot water storage tank 44 are detected by the wattmeter 51, the load wattmeter 58, and the water level sensor 49. Although displayed based on the value, it is not necessary to display based on the detected value. For example, the power generation amount of the fuel cell 40 is displayed based on the power generation mode of the fuel cell 40, the power used by the load 16 is displayed based on switch information from the load 16 side, The amount of hot water stored in the hot water storage tank 44 may be displayed based on the amount of hot water supplied from the hot water storage tank 44 and the operating time of the fuel cell 40.

  Next, a fuel cell power generation system 20B as a second embodiment of the present invention will be described. The fuel cell power generation system 20B according to the second embodiment is the same as the fuel cell power generation system 20 according to the first embodiment except that the operation display panel 70B illustrated in FIG. 5 is provided instead of the operation display panel 70 illustrated in FIG. It has the same configuration. Therefore, detailed description and illustration of the fuel cell power generation system 20B of the second embodiment are omitted except for the operation display panel 70B. As shown in FIG. 5, the operation display panel 70B provided in the fuel cell power generation system 20B of the second embodiment is similar to the operation display panel 70 provided in the fuel cell power generation system 20 of the first embodiment. The operation unit 72B for performing the operation and the display unit 80B for displaying the operation state of the system. Since the operation unit 72B is the same as the operation unit 72 of the operation display panel 70 of the first embodiment, the description thereof is omitted.

  The display unit 80B of the operation display panel 70B of the second embodiment is also configured by a liquid crystal display. As shown in FIG. 5, the operation mode of the fuel cell 40, the power generation amount of the fuel cell 40, the commercial power source 10 (electric power company) The electric power supplied from the power source, the electric power used by the load 16, the amount and temperature of hot water stored in the hot water storage tank 44, the time, and the like are displayed by numerical values and a pictorial display showing a change in the amount by a stepwise change. Also in the second embodiment, the power generation amount of the fuel cell 40, the supply power supplied from the commercial power source 10 (electric power company), the power used by the load 16, the hot water storage amount and temperature of the hot water storage tank 44 are the wattmeter 51. And a load wattmeter 58, a temperature sensor 48, a water level sensor 49, and the like. In the display unit 80B of the second embodiment, the amount of heat given from the fuel cell 40 to the hot water storage tank 44, the amount of power generated by the fuel cell 40, and the power supplied from the commercial power source 10 (electric power company) are indicated by thick arrows. By changing the height stepwise, the amount is changed stepwise. Further, in the display unit 80B of the second embodiment, “automatic” is displayed as the operation mode when the automatic mode that follows the fluctuation of the power used by the load 16 is set, and the operation is performed at the load 16. “Manual” is displayed when the manual mode for performing a constant operation regardless of fluctuations in the used power is set. It should be noted that the display unit 80B of the operation display panel 70B of the second embodiment also displays a display of a system abnormality such as a filter clogging and a periodic inspection.

Also in the fuel cell power generation system 20B of the second embodiment described above, the operation mode of the fuel cell 40, the power generation amount of the fuel cell 40, and the commercial power source 10 (electric power company) are supplied to the display unit 80B of the operation display panel 70B. The power supply, the power used by the load 16, the amount of hot water stored in the hot water storage tank 44, the temperature of the hot water stored in the hot water storage tank 44, the time of day, etc. Can let you know. Therefore, since the operation mode setting operation of the fuel cell 40 can be performed while viewing such information, the system operation can be more appropriately and easily operated. Moreover, the power generation amount of the fuel cell 40, the supply power supplied from the commercial power source 10, the power used by the load 16, the amount of hot water stored in the hot water tank 44, and the temperature of the hot water are the wattmeter 51 and the load wattmeter 58. , Since it is displayed based on the values detected by the water level sensor 49 and the temperature sensor 48, more accurate values can be displayed. Also in the fuel cell power generation system 20B of the second embodiment, the system abnormality such as clogging of the filter and the display for prompting the periodic inspection are displayed, so that the abnormality of the system and the timing of the periodic inspection can be notified. As a result, the system can be stably operated in a good state.

  Also in the fuel cell power generation system 20B of the second embodiment, the operation mode of the fuel cell 40, the power generation amount of the fuel cell 40, the supplied power supplied from the commercial power source 10 (electric power company), to the display unit 80B of the operation display panel 70B, The electric power used in the load 16, the amount of hot water stored in the hot water storage tank 44, the temperature of the hot water in the hot water storage tank 44, the time, etc. are displayed as numerical values and a pictorial display showing the change in the amount by a stepwise change. The display of numerical values and picture display is not limited to the embodiment, and various displays may be used. For example, as a modified example of displaying the same information as the display unit 80B of the operation display panel 70B of the second embodiment, a bar graph-like picture display such as the display unit illustrated in FIG. 6 may be used. The display unit 80B may display only numerical values without displaying a picture display, or the display unit 80C of the operation display panel 70C illustrated in FIG. 7 or the display unit of the modification example illustrated in FIG. Thus, it is good also as what displays only a picture display, without displaying a numerical value.

  The picture display displayed on the display unit 80 of the operation display panel 70 of the first embodiment and the display unit 80B of the operation display panel 70B of the second embodiment has a length as shown in FIG. 2, FIG. 4 and FIG. Graph display showing change in quantity by changing stepwise, and arrow line display showing change in quantity by changing thickness in stages and showing direction in the direction of the arrow as shown in FIGS. As shown in FIG. 8, by changing the density stepwise, the change in quantity can be expressed, and the arrow and the arrow display in different modes expressing the direction according to the direction of the change in density can be used. In addition, although not shown in the figure, a character display showing a change in amount by changing the number of characters to be displayed step by step, a character display showing a change in amount by changing the amount and density of filling the character step by step, etc. It is good.

  In the first embodiment, the display unit 80 of the operation display panel 70 displays the power generation mode of the fuel cell 40, the amount of power generated by the fuel cell 40, the power used by the load 16, the amount of hot water stored in the hot water tank 44, the time, Abnormality, periodic inspection, etc. are displayed. In the second embodiment, the operation mode of the fuel cell 40, the power generation amount of the fuel cell 40, and the supply supplied from the commercial power source 10 (electric power company) to the display unit 80B of the operation display panel 70B. The electric power, the electric power used in the load 16, the amount of hot water stored in the hot water storage tank 44, the temperature of the hot water stored in the hot water storage tank 44, the time, system abnormality, periodic inspection, etc. are displayed. As information displayed on the display units 80 and 80B of 70B, the generated power of the fuel cell 40, the supplied power (purchased power) from the commercial power supply 10, and the load, as in the operation display panel 70D of the modified example illustrated in FIG. 6, and the generated power of the fuel cell 40, the operation mode of the fuel cell 40, and the used power of the load 16, as in the operation display panel 70 </ b> E of the modified example illustrated in FIG. 10. It may be displayed only. In addition, only the generated power of the fuel cell 40 and the amount of hot water stored in the hot water tank 44 and its temperature are displayed, only the generated power of the fuel cell 40 and the supply power of the commercial power supply 10 are displayed, or the fuel cell. Only the generated power of 40 and the used power of the load 16 may be displayed, or the generated power of the fuel cell 40 and other information may be displayed in various combinations. Furthermore, it is possible to not display a display for prompting a system abnormality or periodic inspection.

  In the fuel cell power generation system 20 according to the first embodiment and the fuel cell power generation system 20B according to the second embodiment, the hot water storage tank 44 is of a type that changes the amount of hot water, but the hot water storage tank is always full and changes only in temperature. A closed type may be used. In this case, the water level sensor 49 is unnecessary.

  In the fuel cell power generation system 20 of the first embodiment and the fuel cell power generation system 20B of the second embodiment, a solid polymer type fuel cell is used as the fuel cell 40, but is not limited to a solid polymer type fuel cell, Any type of fuel cell may be used.

  In the fuel cell power generation system 20 of the first embodiment and the fuel cell power generation system 20B of the second embodiment, the city gas (13A) is supplied to the reformer 30 to generate hydrogen-rich fuel gas. A city gas (12A) or propane gas filled in a gas cylinder may be supplied to the reformer 30 to generate fuel gas.

  In the fuel cell power generation system 20 of the first embodiment and the fuel cell power generation system 20B of the second embodiment, the city gas is supplied to the fuel cell 40 as a hydrogen-rich fuel gas by the reformer 30 and the CO selective oxidation unit 34. However, the fuel cell 40 may be supplied from a hydrogen tank that stores hydrogen-rich fuel gas or pure hydrogen.

  In the fuel cell power generation system 20 of the first embodiment and the fuel cell power generation system 20B of the second embodiment, the hot water storage tank 44 for storing hot water by heating water using the heat of the fuel cell 40 is provided. It does not matter even if the tank 44 is not provided.

  The embodiments of the present invention have been described using the embodiments. However, the present invention is not limited to these embodiments, and can be implemented in various forms without departing from the gist of the present invention. Of course you get.

  The present invention can be used in the manufacturing industry of fuel cell power generation systems and operation display devices.

It is a block diagram which shows the outline of a structure of the fuel cell power generation system 20 which is one Example of this invention. It is an external view which illustrates the external appearance of the operation display panel 70 of an Example. It is an external view which illustrates the external appearance of the operation display panel 70 in the state where the operation door 73 is opened. It is explanatory drawing which shows the display part of a modification. It is an external view which illustrates the external appearance of the operation display panel 70B of 2nd Example. It is explanatory drawing which shows the display part of a modification. It is an external view which shows the external appearance of the operation display panel 70C of a modification. It is explanatory drawing which shows the display part of a modification. It is an external view which shows the external appearance of operation display panel 70D of the modification. It is an external view which shows the external appearance of the operation display panel 70E of a modification.

DESCRIPTION OF SYMBOLS 10 Commercial power supply, 12 Electric power line, 14 Circuit breaker, 16 Load, 18 Circuit breaker, 20 Fuel cell power generation system, 22 Gas piping, 24 Control valve, 26, 28 Booster pump, 27 Desulfurizer, 30 Reformer, 32 Combustion Part, 34 CO selective oxidation part, 40 fuel cell, 41 blower, 42 heat exchanger, 43 circulation pump, 44 hot water tank, 46 pump, 51 wattmeter, 52 DC / DC converter, 54 inverter, 55 circuit breaker, 56 DC / DC converter, 58 load power meter, 60 electronic control unit, 62 CPU, 64 ROM, 66 RAM, 68 timer, 70, 70B, 70C, 70D, 70E operation display panel, 72, 72B operation unit, 73 operation door, 74 Run / Stop switch, 74a Run / Stop switch operation section, 75 display ON / OFF switch, 75a Display ON / OF F switch operation unit, 76 power generation mode switch, 80, 80B display unit.

Claims (17)

A fuel cell that generates electricity by receiving fuel supply; and
Hot water storage means for storing at least water heated using heat from the fuel cell;
An operation display unit having an operation unit for operating the fuel cell; and a display unit for displaying output power from the fuel cell and a hot water storage amount of the hot water storage unit;
Power conversion supply means capable of converting the output power from the fuel cell into desired power and supplying the power supply line from another system power supply to the load;
Used power detecting means for detecting used power used in the load;
With
The operation part of the operation display means is a part for setting an operation mode of the fuel cell by selectively inputting from a plurality of preset operation modes,
The display unit of the operation display means displays the used power, and displays “automatic” when the automatic mode following the fluctuation of the used power is set as the operation mode, and displays the used power as the operation mode. It is a part that displays "manual" when the manual mode is set to perform a constant operation regardless of fluctuations,
Fuel cell power generation system.   2. The fuel according to claim 1, wherein the display section of the operation display means is a section for displaying a currently set power generation mode among three power generation modes of “high”, “medium”, and “low” as power generation modes of the fuel cell. Battery power generation system. 3. The fuel cell power generation according to claim 1 , wherein the operation display unit is a unit that displays, on the display unit, supply power supplied from the other system power supply to the load in place of or together with the use power. system. A fuel cell power generation system according to any one of claims 1 to 3 ,
Output power detection means for detecting output power from the fuel cell;
Hot water storage amount detection means for detecting the hot water storage amount of the hot water storage means;
With
The operation display means is means for inputting and displaying the detected output power from the fuel cell and the detected hot water storage amount of the hot water storage means on the display unit.   5. The fuel cell power generation system according to claim 1, wherein the operation display unit is a unit that displays a hot water storage amount at that time relative to a maximum hot water storage amount that can be stored in the hot water storage unit on the display unit. A fuel cell that generates electricity by receiving fuel supply; and
Power conversion supply means capable of converting DC power from the fuel cell into desired power and supplying the power supply line from another system power source to the load;
An operation display means for operating the operation of the fuel cell; and an operation display means for displaying output power from the fuel cell and supply power supplied to the load from the other system power supply;
Equipped with a,
The operation part of the operation display means is a part for setting an operation mode of the fuel cell by selectively inputting from a plurality of preset operation modes,
The display unit of the operation display means displays the used power used by the load, and displays “automatic” when an automatic mode that follows the fluctuation of the used power is set as the operation mode. It is a part that displays "manual" when a manual mode for performing a constant operation regardless of fluctuations in the power used is set as a mode.
Fuel cell power generation system.   7. The fuel according to claim 6, wherein the display unit of the operation display means displays a currently set power generation mode among three power generation modes of “high”, “medium”, and “low” as power generation modes of the fuel cell. Battery power generation system. The fuel cell power generation system according to claim 6 or 7 ,
Output power detection means for detecting output power from the fuel cell;
Supply power detection means for detecting supply power supplied to the load from the other system power supply,
With
The operation display means is a means for inputting the detected output power of the fuel cell and the detected supply power supplied to the load from another system power supply and displaying the input on the display section. . The fuel cell power generation system according to any one of claims 6 to 8 , wherein the operation display means is means for displaying, on the display unit, used power used in the load in place of the supplied power or together with the supplied power. The fuel cell power generation system according to any one of claims 1 to 9, wherein the display section of the operation display means is a section that displays numerical values. The fuel cell power generation system according to any one of claims 1 to 10, wherein the display unit of the operation display means is a unit that displays a picture display that can be changed in stages. A fuel cell that generates power upon receipt of fuel supply, hot water storage means that stores at least water heated by using heat from the fuel cell, and output power from the fuel cell that converts the output power to desired power to another system power source An operation display device for use in a fuel cell power generation system comprising power conversion supply means capable of being supplied to a power supply line from a power source to a load ,
An operation unit for operating the fuel cell;
A display for displaying the output power from the fuel cell and the amount of hot water stored in the hot water storage means;
With
The operation unit is a unit that sets an operation mode of the fuel cell by selectively inputting from a plurality of preset operation modes,
The display unit displays the used power used in the load, and displays “automatic” when the automatic mode that follows the fluctuation of the used power is set as the operation mode, and the used as the operation mode. It is a part that displays "manual" when the manual mode is set to perform a constant operation regardless of power fluctuations,
Operation display device.   The operation display device according to claim 12, wherein the display unit is a unit that displays a currently set power generation mode among three power generation modes of "high", "medium", and "low" as power generation modes of the fuel cell. The operation display device according to claim 12 or 13 , wherein the display unit is a unit that displays a hot water storage amount at that time relative to a maximum hot water storage amount that can be stored in the hot water storage means as the hot water storage amount. Fuel cell power generation comprising: a fuel cell that generates power upon receiving fuel supply; and power conversion supply means that converts DC power from the fuel cell into desired power and can be supplied to a power supply line from another system power source to a load. An operation display device used in the system,
An operation unit for operating the fuel cell;
A display unit for displaying output power from the fuel cell and power supplied to the load from the other system power supply;
Equipped with a,
The operation unit is a unit that sets an operation mode of the fuel cell by selectively inputting from a plurality of preset operation modes,
The display unit displays the used power used in the load, and displays “automatic” when the automatic mode that follows the fluctuation of the used power is set as the operation mode, and the used as the operation mode. It is a part that displays "manual" when the manual mode is set to perform a constant operation regardless of power fluctuations,
Operation display device.   The operation display device according to claim 15, wherein the display unit is a unit that displays a currently set power generation mode among three power generation modes of “high”, “medium”, and “low” as power generation modes of the fuel cell. The operation display device according to claim 15 or 16 , wherein the display unit is a unit that displays power used in the load in place of the supplied power or together with the supplied power.

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