JP2000046587A - Display unit for fuel cell vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display unit suitable for displaying the state of a power source in a vehicle driven by a fuel cell. SOLUTION: Output of each element constituting a fuel cell system is monitored and the result is displayed in a driver's seat display part. In an example, the flow rate of hydrogen gas supplied from hydrogen occlusion alloy to a fuel cell stack, electric power supplied from the fuel cell stack to a motor, electric power supplied from a battery to the motor, and consumption power of the motor are synchronously displayed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device for an electric vehicle using a fuel cell.

[0002]

2. Description of the Related Art
From the viewpoint of ecology, development of an electric vehicle using a fuel cell is desired. In such a vehicle, a driving system is different from a vehicle driven by a fuel engine. Therefore, when a user accustomed to such a conventional vehicle drives an electric vehicle using a fuel cell, it is unclear what the power source (fuel gas, fuel cell stack, battery, motor, etc.) is in. And the driver is obliged to know the condition. In addition, the state of these power sources is an object of interest apart from anxiety. Therefore, an object of the present invention is to provide a display device suitable for displaying the state of a power source in an electric vehicle using a fuel cell.

[0003]

Means for Solving the Problems The present invention has been made to solve the above-mentioned problems, and the configuration of the first aspect is as follows. Means for storing the maximum output of the fuel cell device, means for detecting the current output of the fuel cell device, means for comparing the current output of the fuel cell device with the maximum output of the fuel cell device, Means for displaying the result of the comparison.

According to the display device of the first aspect configured as described above, the ratio of the current output to the maximum output of the fuel cell device is displayed, for example, as a percentage. Therefore, the state of the fuel cell device is always visually monitored by the user. This eliminates anxiety about the new method. In addition, by displaying the operation of the new configuration (the ratio of the current output to the maximum output of the fuel cell) in real time, there is an amenity effect that satisfies the user's interest.

[0005] The configuration of the second aspect of the present invention is as follows. A display device for a fuel cell vehicle, comprising: means for detecting a flow rate of a fuel gas supplied to a fuel cell stack; and means for displaying a flow rate of the fuel gas.

According to the display device of the second aspect configured as described above, the flow and state of the flammable fuel gas can always be visually monitored, giving the user a sense of security. At the same time, by displaying the operation (flow rate of fuel gas) of the new configuration in real time, there is an effect of amenities that satisfy the user's interest.

[0007] A third aspect of the present invention is configured as follows. A fuel cell comprising: a battery attached to a fuel cell stack; means for detecting a charge / discharge state of the battery; and means for displaying a charge / discharge state of the battery based on a detection result of the detection means. A display device for an electric vehicle using the same.

According to the display device of the third aspect configured as described above, the state of charge / discharge of the battery as a backup power source of the fuel cell device can always be visually monitored, giving a sense of security to the user. At the same time, by displaying the operation of the new configuration (battery charge / discharge state) in real time, there is an effect of amenities that satisfy the user's interest.

The fourth aspect of the present invention is configured as follows. A fuel cell device, a battery, a unit for detecting regeneration of a motor supplied with power from the fuel cell device and the battery, and a unit for displaying a regeneration state of the motor based on a detection result of the detection unit; A display device for a fuel cell vehicle comprising:

[0010] According to the display device of the fourth aspect configured as described above, the regenerative state of the motor driving the vehicle can be constantly visually monitored, and the user can grasp the power obtained by the regenerative operation, thereby improving the ecology. Can be realized.

A fifth aspect of the present invention is configured as follows. First means for detecting the output of the fuel cell device, second detecting means for detecting the charge / discharge state of the battery, and the fuel based on the detection results of the first detecting means and the second detecting means. A display device for an electric vehicle using a fuel cell, comprising: display means for synchronously displaying an output of a battery device and a charge / discharge state of the battery.

According to the fifth aspect of the present invention, since the output of the fuel cell device and the charge / discharge state of the battery are displayed in synchronization, the direct power to the motor driving the vehicle is provided. The state of the supply source can be visually grasped, giving the user a sense of security. At the same time, by displaying the operation of the new configuration (the fuel cell device and the battery cooperate to supply power to the motor) in real time, there is an effect of amenities that satisfy the interest of the user.

A sixth aspect of the present invention is configured as follows. Means for storing fuel gas, a fuel cell device to which fuel gas is supplied from the fuel gas storage means, means for detecting the remaining amount of fuel gas in the means for storing fuel gas, and detection results of the detection means A display device for displaying the remaining amount of the fuel gas based on the display of the fuel cell vehicle.

According to the sixth aspect of the present invention, the remaining amount of the fuel gas can always be monitored visually, giving a sense of security to the user. At the same time, by displaying the operation of the new configuration (the fuel gas is consumed by the fuel cell device) in real time, there is an effect of amenities that satisfy the interest of the user.

The invention according to a seventh aspect of the present invention is configured as follows. First means for detecting the output of the fuel cell device, second detecting means for detecting the charge / discharge state of the battery, third detecting means for detecting the power consumption state of the motor, and the first to third means A display unit for displaying the flow of energy between the fuel cell device, the battery, and the motor based on the detection result.

According to the seventh aspect of the present invention, the flow of energy between the fuel cell device, the battery and the motor can always be monitored visually, giving a sense of security to the user. At the same time, the flow of the energy is interesting and has an effect of amenities that satisfy the interests of the user.

An eighth aspect of the present invention is configured as follows. Means for detecting the energy conversion efficiency of the fuel cell, means for displaying the detected energy conversion efficiency,
A display device for a fuel cell vehicle comprising:

According to the eighth aspect of the present invention, the energy conversion efficiency can always be monitored visually, so that the user can grasp the conversion efficiency and realize that he / she contributes to ecology. it can.

The ninth aspect of the present invention is configured as follows. Fuel gas storage means for storing fuel gas, a trip meter for integrating the travel distance of the vehicle, and means for resetting the trip meter when the fuel gas storage means is charged with the fuel cell. A display device for a fuel cell vehicle.

According to the ninth aspect of the display device configured as described above, when the fuel gas is charged into the fuel gas storage means, the trip meter is automatically reset. Therefore, when fuel gas is charged next time, so-called fuel efficiency can be easily grasped.

[0021]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a configuration of a fuel cell system 1 according to an embodiment of the present invention. As shown in FIG. 1, the fuel cell system 1 generally includes a fuel cell stack 2, a fuel supply system 10 including a hydrogen storage alloy 11, an air supply system 40, a water supply system 50, and a load system 70.

The fuel cell stack 2 is formed by connecting a plurality of unit units of a fuel cell. This unit is
The fuel cell body has a configuration in which a solid polymer electrolyte is sandwiched between an air electrode and a fuel electrode, and is further sandwiched between carbon black separators. Although the shape of the unit unit is not particularly limited, an air flow path for circulating air is formed vertically between the separator and the air electrode. A hydrogen gas flow path for flowing hydrogen gas is formed between the separator and the fuel electrode.

In the fuel supply system 10, the hydrogen released from the hydrogen storage alloy 11 via the hydrogen supply path 20 is sent to the hydrogen gas flow path of each unit of the fuel stack 2. A hydrogen pressure regulating valve 21 is provided in the hydrogen supply path 20 to regulate the pressure of hydrogen gas released from the hydrogen storage alloy 11. Symbol 23
Is a hydrogen supply solenoid valve 23, which controls opening and closing of the hydrogen supply path 20. Reference numeral 12 in the figure denotes a connector used when filling the hydrogen storage alloy 11 with hydrogen from an external hydrogen supply source. The connector 12 has a switch 13 attached thereto. When the connector 12 is connected to an external hydrogen source, the switch 13 is operated to send a signal to the controller 151 (see FIG. 2). Control device 151 resets trip meter 160 (see FIG. 8) based on this signal.
Thereby, it is possible to notify the traveling distance for one hydrogen filling amount. The hydrogen gas pressure immediately before being supplied to the fuel cell stack 2 is monitored by a hydrogen source pressure sensor 25. The flow rate of the hydrogen gas is monitored by a hydrogen gas flow meter 27. A well-known configuration is used for the pressure gauge 25 and the flow meter 27.

The hydrogen storage alloy 11 is provided with means for detecting the remaining amount of hydrogen stored therein. The means for detecting the remaining amount of hydrogen is not particularly limited, but in this embodiment, a pressure gauge 29 for measuring the internal pressure of the hydrogen storage alloy cylinder is provided. The remaining amount of hydrogen stored in the hydrogen storage alloy 11 is detected by comparing the internal pressure of the cylinder when the hydrogen storage alloy 11 stores the maximum amount of hydrogen with the current internal pressure.

In the fuel supply system 10, hydrogen gas discharged from the fuel cell stack 2 is discharged to the atmosphere via a hydrogen exhaust path 30. A check valve 31 and a solenoid valve 33 are provided in the hydrogen exhaust path 30. The check valve 31 is a hydrogen exhaust passage 3
This prevents air from entering the fuel electrode of the fuel cell stack 2 via the zero. The solenoid valve 33 is driven intermittently to positively discharge remaining water (and detoxified gas). The hydrogen exhaust path 30, the check valve 31, and the solenoid valve 33 are collectively called a fuel gas discharge system. Although not shown, a catalytic combustor as a combustion means is disposed in the pipe 30 to catalytically combust the hydrogen discharged from the discharge port and air introduced from the outside to produce water (and detoxified gas). In this state, it is discharged via the solenoid valve 33.

The air supply system 40 supplies air from the atmosphere to the air flow path of the fuel cell stack 2 and exhausts the air discharged from the fuel cell stack 2 through a water condenser 51. The air supply path 41 is provided with a fan 43 for sending air from the atmosphere to the air manifold 45. The air flows from the manifold 45 into the air flow path of the fuel cell stack 2 to supply oxygen to the air electrode. The air discharged from the fuel cell stack 2 is condensed and recovered by a water condenser 51 (water recovery device) and released to the atmosphere. Air manifold 45
Is detected by an air flow sensor 46. A general-purpose flow meter can be used as the sensor 46. The temperature of the air discharged from the fuel cell stack 2 is monitored by an exhaust gas temperature sensor 47.

In this embodiment, a nozzle 55 is provided on the side wall of the air manifold 45, and thereby water is supplied in a liquid state during intake. Most of this water reaches the water condenser 51 while maintaining the liquid state, and is sent to the tank 53 as it is to be collected. Part of the supplied water evaporates and is condensed and recovered in the water condenser 51. Note that the water vapor contained in the exhaust air includes the fuel cell stack 2
It is considered that some of the water is caused by the reaction water accompanying the power generation reaction. The water condenser 51 is provided with a general-purpose heat exchanger (not shown), which is cooled by a fan to condense and recover water vapor in the exhaust air.

The water supply system 50 supplies water from the tank 53 to the nozzle 5
5 is a closed system in which the water is supplied to the air manifold 45, and this water is collected by the water condenser 51 and returned to the tank 53. The water level in the tank 53 is constantly monitored by a water level sensor 56. A float type water level sensor was used. A heater 57 and an anti-freezing electromagnetic valve 58 are attached to the tank 53 so that the water in the tank 53 does not freeze in winter. An electromagnetic valve 60 is attached to a pipe connecting the water condenser 51 and the tank 53 to prevent water in the tank 53 from evaporating.

The water in the tank 53 is pumped by a pump 61 to a nozzle 55 arranged in an air manifold, and is continuously or intermittently jetted from the nozzle 55 to the surface of the air electrode. This water is supplied to the air electrode of the fuel cell stack 2 and preferentially removes latent heat from the air, so that evaporation of water from the electrolyte membrane on the air electrode side is prevented. Therefore, the electrolyte membrane always maintains a uniform wet state without drying on the air electrode side. Further, the water supplied to the surface of the air electrode also removes heat from the air electrode itself and cools it, so that the temperature of the fuel cell stack 2 can be controlled. That is, the fuel cell stack 2 can be sufficiently cooled without adding a cooling water supply system to the fuel cell stack 2. The output of the pump 61 is controlled in accordance with the temperature of the exhaust air detected by the exhaust temperature sensor 47 to maintain the temperature of the fuel cell stack 2 at a desired temperature.

The load system 70 extracts the output of the fuel cell stack 2 to the outside and drives the motor 77. The load system 70 is provided with a relay 71 for a switch and a battery 75 as an auxiliary output source.
A rectifying diode 73 is interposed between the rectifying diode 73 and the rectifying diode 73.
The voltage of the fuel cell stack 2 itself is measured by the voltage sensor 76.
Is constantly monitored by Based on this monitoring result, the opening and closing of the hydrogen exhaust solenoid valve 33 is controlled by a control circuit (not shown).

The fuel cell stack 2, the battery 75, and the module
At the intersection of the power paths of the
Are arranged. The power distribution device 80 includes a motor 7
7, the current output of the fuel cell stack 2
Power, the state of charge of the battery 75, etc.
Control the flow. For example, a large output is required for the motor 77.
When required, the fuel cell stack 2 and the battery 75
To supply power to the motor. Ma
When the motor 77 is regenerating, the motor 77
The generated power is sent to the battery 75 and charged there.
Let This flow of power is generated by the fuel cell stack
The first wattmeter 81 that detects the power of the
To the second wattmeter 82 and the motor 77 for detecting the power of the
The power is detected by a third power meter 83 that detects power. No.
The second and third power meters 82, 83 also measure negative power.

Next, the display device of this embodiment will be described. FIG. 2 is a block diagram showing components constituting a control system 150 that controls each display unit of the display device 200 shown in FIG. Various sensors shown in FIG. 1 are denoted by the same reference numerals. The control device 151 includes the CPU 153 and the memory 15
5 is provided. The CPU 153 is connected to each element via an interface (not shown), and controls each element based on a control program stored in the memory 155 in advance.

FIG. 3 shows an example of a driver's seat display section 200 of an electric vehicle using a fuel cell. This driver's seat display section 200
Includes a speed display unit 201, a power output display unit 203, a hydrogen remaining amount display unit 205, a warning lamp group 207, and an energy flow display unit 210. Needless to say, a display unit required for a general vehicle such as a turn signal display unit is provided, but these are omitted.

The speed display unit 201 displays the current vehicle speed detected by a general speed sensor (not shown). The power output display unit 203 displays the total output of a power supply composed of the fuel cell stack 2 and the battery 75. Specifically, the CPU 153 adds the electric power measured by the FC wattmeter 81 and the electric power measured by the battery wattmeter 82 (the electric power going to the motor 77 is defined as positive), and displays the result.

The hydrogen remaining amount display section 205 is used to display the hydrogen storage alloy 11
The remaining amount of hydrogen stored in the display is displayed. Memory 155
Stores the internal pressure of the hydrogen storage alloy tank when the maximum amount of hydrogen is stored in the hydrogen storage alloy 11. Then, the CPU compares the current internal pressure of the hydrogen storage alloy tank detected by the pressure gauge (hydrogen fuel gauge) 29 with the internal pressure corresponding to the stored maximum storage amount, and stores the predetermined internal pressure stored in the memory 155. The remaining hydrogen amount is calculated in accordance with the rules described above.

The warning lamp group 207 is for the fuel cell system 1
When an abnormality occurs, the driver is notified of the source of the abnormality. Gasly clamp 2071 is a hydrogen storage alloy 11
When the pressure in the hydrogen supply passage 20 detected by the hydrogen source pressure sensor 25 becomes smaller than a predetermined value, despite the fact that a sufficient amount of hydrogen has been occluded, the lamp is turned on or flashed. This is because hydrogen gas may leak from the hydrogen supply system 10.

The voltage drop lamp 2072 is connected to the voltage sensor 7
When the output voltage of the fuel cell stack 2 detected in step 6 becomes lower than a predetermined value, it is turned on or blinked. A possible cause of the voltage drop is deterioration of the electrolyte membrane. The exhaust temperature lamp 2073 is turned on or blinks when the temperature of the exhaust air of the fuel cell stack 2 detected by the exhaust temperature sensor 47 becomes higher than a predetermined temperature. Since the temperature of the exhaust air reflects the reaction temperature of the fuel cell stack 2, an abnormal reaction may occur in the stack 2 when the exhaust temperature increases.

The battery heating lamp 2074 is turned on or blinks while the heater 57 is turned on to warm up the water tank 53 in order to start the fuel cell stack 2 when it is cold. Since the water in the water tank may freeze when cold, the fuel cell is not started while the heater 57 is at a sufficient temperature (in a state where water can be supplied to the fuel cell stack 2). .

The hydrogen deficiency lamp 2075 is a
When the remaining amount of hydrogen in the hydrogen storage alloy 11 detected by the above becomes lower than a predetermined value (for example, 10% of the maximum storage amount), it is turned on or blinked. Low air lamp 2076
Is turned on or blinked when the air flow rate detected by the air flow rate sensor 46 falls below a predetermined value. The decrease in the air flow rate is caused by, for example, clogging of an air filter (not shown) of the fan 43.

The water shortage lamp 2077 is connected to the water level sensor 56.
When the water level of the water tank 53 detected by the above falls below a predetermined range (50 to 80% of the maximum allowable amount), the light is turned on or blinked. Insufficient water may impair the cooling and moisturizing functions of the fuel cell stack 2. In particular, if water is insufficient at the time of startup, the air electrode of the fuel cell may not be sufficiently wet before the hydrogen gas is supplied to the fuel cell stack 2, which may cause an abnormal reaction. The excess water lamp 2078 is turned on or blinks when the water level of the water tank 53 detected by the water level sensor 56 exceeds the above-mentioned predetermined range. If the water is excessive in the water supply system 50, there is a possibility that the water will overflow, which is not preferable. Since the reaction water is generated by the power generation reaction, if the reaction water is condensed by the water condenser 51 with high efficiency and taken into the water supply system 50, the water supply system 50
The amount of water inside will increase.

The energy flow display section 210 includes a hydrogen flow display section 2101, an air flow display section 2102, a fuel cell output display section 2103, a battery output display section 2104, and a motor power consumption display section 2105. The hydrogen flow rate display unit 2101 displays the hydrogen flow rate detected by the hydrogen flow meter 27. This hydrogen flow rate indicates the amount of hydrogen gas flowing through the hydrogen supply path 20 to be supplied to the fuel cell stack 2. In the illustrated example, 100 L / min of hydrogen gas is supplied to the fuel cell stack 2. The air flow rate display unit 2102 displays the air flow rate detected by the air flow rate sensor 46. This air flow rate indicates the amount of air sent from the fan 43 to be supplied to the air manifold 45 of the fuel cell stack 2. In the illustrated example, 1000 L / mi
An amount n of air is supplied to the air manifold 45.

The fuel cell output display unit 2103 displays the power detected by the first wattmeter 81. In the example shown, 20k
It can be seen that W power is being supplied from the fuel cell stack 2. In the sub-window of the fuel cell output display unit 2103, the ratio of the current output to the maximum output of the fuel cell stack 2 is displayed as a percentage. Battery output display section 2104 displays the power detected by second power meter 82. In the illustrated example, power of −5 kW is output. This means that 5 kW of the output of the fuel cell stack 2 is charged in the battery 75. In the sub-window of the battery output display unit 2104, the ratio of the current output to the maximum output of the battery 75 is displayed as a percentage.

Therefore, the electric power supplied to the motor 77 is 1
The power becomes 5 kW, and the power of this value is detected by the third wattmeter 83 and displayed on the motor power consumption display unit 2105. When the motor 77 is regenerating, the value of the motor power consumption display unit 2105 is negative. Alternatively, the display of “motor power consumption” on the display unit may be changed to “motor regenerative power”, and the regenerative power may be displayed as a positive value. Each display unit 2101 of these energy flow display units 210
The display of 2105 is performed synchronously. Therefore, the flow of energy in the electric vehicle including the fuel cell system can be visually recognized.

FIG. 4 shows a driver's seat display section 300 of another embodiment. The driver's seat display section 300 includes a speed display section 301,
A power output display unit 303, an energy flow display unit 310, and an air contamination display unit 320 are provided. Needless to say, a display unit required for a general vehicle such as a turn signal display unit is provided, but these are omitted.

The speed display unit 301 displays the current vehicle speed detected by a general speed sensor (not shown). The power output display unit 303 includes a portion 3031 for displaying the output of the fuel cell stack 2 and a portion 3032 for displaying the output of the battery 75. The output of the fuel cell stack 2 in the electric power supplied to the motor 77 detected by the third power meter 83 (detected by the first power meter 81)
The control device 151 calculates the ratio of the output of the battery 75 and the output of the battery 75 (detected by the second wattmeter), and displays the ratio on the fuel cell output display portion 3031 and the battery output display portion 3032, respectively. When the battery 75 is being charged, the battery output display section 3032 displays a value of 0%.

The energy flow display section 310 displays a hydrogen tank display section 3101 for displaying the tank of the hydrogen storage alloy 11,
It comprises a fuel cell display 3103, a battery display 3104, and a motor rotation display 3106. Each part is connected by energy paths 3110 and 3111, and the paths 3110 and 3111 are shown so as to indicate the direction of energy flow.
Flashes. That is, when hydrogen is being supplied from the hydrogen storage alloy 11 to the fuel cell stack 2, the segments lit from the hydrogen tank display unit 3101 to the fuel cell display unit 3103 move on the energy path 3110.
When both the output of the fuel cell stack 2 and the output of the battery 75 are supplied to the motor 77, the segments lit from the fuel cell display unit 3103 and the battery display unit 3104 to the motor rotation display unit 3106 in the energy path 3111 move. On the other hand, at the time of regeneration, the motor rotation display unit 3106 displays reverse rotation, and the motor rotation display unit 3106
The lit segment moves to the battery display unit 3104 from. In the above description, the display of the energy path 3110 is executed by the controller 151 processing the detection result of the hydrogen gas flow meter 27. Energy path 3111
Is executed when the control device 151 processes the detection results of the first to third power meters 81 to 83.

The hydrogen tank display section 3101 is the remaining quantity display section 3
1011, a continuous travelable distance display unit 31012 and a warning display unit 31013 are provided. The display of the remaining amount display section 31011 is executed by the control device 151 processing the detection result of the remaining hydrogen amount meter 29. Continuous running distance display 3
The display of 1013 is performed by the controller 151 processing the remaining amount of hydrogen with reference to the current traveling pattern (the amount of hydrogen gas consumed when traveling the unit distance) monitored by the controller 151. It is executed (the distance that can be traveled is indicated by a numerical value). Warning display section 31013
Displays a shortage of remaining hydrogen when the remaining amount of hydrogen falls below a predetermined threshold. The display of the warning display section 31013 is also executed by the control device 151 processing the detection result of the hydrogen fuel gauge 29.

The fuel cell display section 3103 is provided with a warning display section 31.
The warning display section 31031 displays the abnormal heating when the temperature of the fuel cell stack 2 exceeds a predetermined temperature. The display of the warning display section 31013 is executed by the control device 151 processing the detection result of the exhaust gas temperature sensor 47.

The battery display section 3104 includes a charge state display section 31041. The charge state display section 31041 displays the charge state of the battery 75. The display of the charge state display section 31041 is executed by processing the detection result of the general-purpose battery fuel gauge attached to the battery 75 by the control device 151.

The motor display unit 3106 displays the rotation of the motor 77, and the rotation display is reversed between the drive state and the regenerative state. The display of the motor display unit 3106 is executed by processing the detection result of the third power meter 83 by the control device 151.

The air dirt display section 320 displays the state of air dirt in the vehicle cabin. This air stain display section 3
The display 20 indicates the air contamination sensor 17 disposed in the room.
This is executed by the control device 151 processing the detection result of 0.

FIG. 5 shows a driver's seat display section 400 of another embodiment.
Is shown. The driver's seat display section 400 includes a speed display section 40
1. Power output display unit 403, hydrogen storage alloy temperature display unit 405, hydrogen remaining amount display unit 406, inter-vehicle distance meter 408, warning display units 409 and 411, and navigation monitor 4.
12 is provided. Needless to say, a display unit required for a general vehicle such as a turn signal display unit is provided, but these are omitted.

Speed display unit 401, power output display unit 40
3. The operation of the remaining hydrogen amount display unit 406 is the same as that of the above-described embodiment. The temperature display of the hydrogen storage alloy 11 is 40
5 indicates the temperature of the hydrogen storage alloy 11;
The display is executed by the controller 151 processing the detection result of the thermometer 28. The inter-vehicle distance meter 408 displays the inter-vehicle distance to the preceding and following vehicles detected by the inter-vehicle distance detection means provided on the vehicle (not shown). Further, information on the relative distance and the relative speed is calculated in accordance with the inter-vehicle distance and the vehicle speed detected by the inter-vehicle distance detection means, and based on this information, the driver is notified by a not-shown notification means whether or not there is a dangerous situation.

The warning display section 409 displays the state of charge of the battery 75 in three levels (blue, yellow, and red) as viewed on a signal display. This display is executed by the control device 151 processing the detection result of the general-purpose battery fuel gauge attached to the battery 75. The warning display unit 410 has three levels (red,
(Yellow, blue). This display shows fuel cell stack 2
The processing is performed by processing the output result of the voltmeter 76 attached to the control unit 151 with the control device 151. Hydrogen remaining amount display section 406
When the remaining amount in the hydrogen storage alloy 11 detected by the hydrogen remaining amount meter 29 indicates a predetermined value (for example, 10% of the maximum storage amount), a navigation device (not shown) operates around the current position of the vehicle or a predetermined amount. The location of the hydrogen filling station within the range is displayed through the navigation monitor 412,
Give guidance.

FIG. 6 shows a fuel cell output display section 50 of another embodiment.
3 is shown. In the fuel cell output display unit 503, the output (0 to 20 kW) in the most frequently used range is widely set. The display on the display unit 503 indicates the first power meter 8
This is performed by processing the detection result of No. 1 by the control device 151.

FIG. 7 shows an example of the efficiency display section 600 for displaying the efficiency of the fuel cell stack 2. This efficiency is caused by the flow rate of hydrogen gas supplied to the fuel cell stack 2 (detected by the hydrogen gas flow meter 27), the voltage of the fuel cell stack 2 itself (detected by the voltage sensor 76), and the generation of the fuel cell stack. Calculated from the electric power (first wattmeter 81),
Is displayed. The hydrogen gas flow meter 27 and the voltage sensor 76
The first power meter 81 constitutes means for detecting the energy conversion efficiency, and the efficiency display section 600 constitutes means for displaying the detected energy conversion efficiency.

The present invention is not at all limited to the description of the above-described embodiments and examples. Various modifications are included in the present invention without departing from the scope of the claims and within the scope of those skilled in the art.

(100) The display device according to claim 1, wherein the display means displays a ratio of the current output to the maximum output in%. (101) A display device for a fuel cell vehicle, comprising: means for detecting the output of the fuel cell device; and means for displaying the detected output of the fuel cell device.

(201) A display device for a fuel cell vehicle comprising: means for detecting the gas pressure of the fuel gas supplied to the fuel cell stack; and means for displaying the detected gas pressure of the fuel gas. . (202) A display device for a fuel cell vehicle, comprising: means for detecting a flow rate of air supplied to the fuel cell stack; and means for displaying the detected flow rate of the air. (203) A display device for a fuel cell vehicle, comprising: means for detecting the temperature of the fuel cell stack; and means for displaying the detected temperature of the fuel cell stack.

(801) A fuel cell vehicle characterized by comprising means for detecting the state of air contamination in a room and means for displaying the state of air contamination based on the detection result of the detecting means. Display device. For a user who is driving a fuel cell vehicle and emitting clean exhaust gas, the state of contamination of the air inside the vehicle is also of interest. Therefore, displaying the state of contamination of the air inside the fuel cell vehicle in this way gives the user a sense of security. There is also the effect of amenities. (1000) Claims 1 to 11, and (101),
A display device for a fuel cell vehicle, comprising: at least two elements selected from (201) to (203) and (801). (901) Claims 1 to 11, and (101), (2)
A warning lamp is displayed when a result detected by each of the detecting means according to any one of (01) to (203) and (801) is out of a predetermined range. To 11, and (101), (20
1) The display device for a fuel cell vehicle according to any one of (203), (801), and (1000).

[Brief description of the drawings]

FIG. 1 is a conceptual diagram showing a configuration of a fuel cell system according to one embodiment of the present invention.

FIG. 2 is a block diagram showing a control system.

FIG. 3 is a front view showing a driver's seat display section of one embodiment.

FIG. 4 is a front view showing a driver's seat display section of another embodiment.

FIG. 5 is a front view showing a driver's seat display section of another embodiment.

FIG. 6 is a front view showing another example of the fuel cell output display unit.

FIG. 7 is a front view showing an efficiency display section of the fuel cell.

FIG. 8 is a front view showing the odometer.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fuel cell system 2 Fuel cell stack 11 Hydrogen storage alloy 151 Control device 200, 300, 400 Driver's seat display section

Continuation of the front page (72) Inventor Kiyoshi Katahira 2--19-12 Sotokanda, Chiyoda-ku, Tokyo Inside Equos Research Co., Ltd. (72) Inventor Goichi Shiraishi 2- 19-12 Sotokanda, Chiyoda-ku, Tokyo Inside Equos Research Co., Ltd. (72) Inventor Masashi Nakamura 2-19-12 Sotokanda, Chiyoda-ku, Tokyo (72) Inventor Masataka Ueno 2-19, Sotokanda, Chiyoda-ku, Tokyo No. 12 F-term in Equos Research Co., Ltd. (reference) 2F041 EA02 EA05 EA07 KA05 5H027 AA06 BA14 DD03 KK00 KK25 KK51 KK52 5H111 CC01 CC16 CC18 DD01 GG17 HA02 HA05 HB01 HB09 HB10

Claims (11)

[Claims] Means for storing the maximum output of the fuel cell device; means for detecting the current output of the fuel cell device; and comparing the current output of the fuel cell device with the maximum output of the fuel cell device. And a means for displaying a result of the comparison. 2. A display device for a fuel cell vehicle, comprising: means for detecting a flow rate of a fuel gas supplied to a fuel cell stack; and means for displaying the detected flow rate of the fuel gas. 3. A battery attached to a fuel cell stack, means for detecting a charge / discharge state of the battery, and means for displaying a charge / discharge state of the battery based on a detection result of the detection means. A display device for a fuel cell vehicle provided. 4. A fuel cell device, a battery, a means for detecting regeneration of a motor supplied with power from the fuel cell device and the battery, and a regeneration state of the motor based on a detection result of the detection means. A display device for a fuel cell vehicle, comprising: means for displaying. 5. A first means for detecting an output of a fuel cell device, a second detecting means for detecting a charge / discharge state of a battery, and a detection result of the first detecting means and the second detecting means. Display means for displaying the output of the fuel cell device and the charge / discharge state of the battery in synchronization with each other on the basis of the display information. 6. A motor further comprising third detection means for detecting power consumption of the motor, wherein the display means displays the power consumption of the motor in synchronization with an output of the fuel cell device and a charge / discharge state of a battery. The display device according to claim 5, wherein: 7. A means for storing fuel gas, a fuel cell device receiving a supply of fuel gas from the fuel gas storage means, a means for detecting a remaining amount of fuel gas in the means for storing fuel gas, A display unit for displaying the remaining amount of the fuel gas based on a detection result of the detection unit. 8. First means for detecting an output of the fuel cell device, second detecting means for detecting a charge / discharge state of a battery, third detecting means for detecting a power consumption state of a motor, A display device for a fuel cell vehicle, comprising: display means for displaying the flow of energy between the fuel cell device, the battery, and the motor based on the first to third detection results. 9. A fuel cell system further comprising: fourth detection means for detecting a flow of the fuel gas, wherein the display means displays the flow of the fuel gas on the basis of a detection result of the fourth detection means. The display device according to claim 9, wherein the display is performed in synchronization with the flow of energy between the battery and the motor. 10. A display device for a fuel cell vehicle, comprising: means for detecting the energy conversion efficiency of the fuel cell; and means for displaying the detected energy conversion efficiency. 11. A fuel gas storage means for storing fuel gas, a trip meter for integrating the travel distance of a vehicle, and a means for resetting the trip meter when the fuel gas storage means is charged with the fuel gas. A display device for a fuel cell vehicle, comprising: