JP2006073309A - Fuel cell system and car equipped with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To accurately detect the concentration of prescribed gas in air in an outside space of a fuel cell system and conduct appropriate treatment, based on the concentration of the prescribed gas. <P>SOLUTION: Occupant compartment oxygen concentration Cin and exterior oxygen concentration Cout are corrected (S140, S120), by using temperature correction coefficients KTin, KTout based on occupant compartment temperature Tin and exterior temperature Tout and an atmospheric pressure correction coefficient KP based on the atmospheric pressure Pa; when a car is running, the occupant compartment oxygen concentration Cin is compared with thresholds C1, C2, and if the occupant compartment oxygen concentration is lowered, that is informed or the system is stopped (S140-S160); and when the car is not running, the corrected exterior oxygen concentration Cout is compared with thresholds C3, C4, and if car peripheral oxygen concentration is lowered, this is notified or the system is stopped (S170-S190). As a result, oxygen concentration is appropriately detected, and lowering in oxygen concentration is appropriately coped. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a fuel cell system and an automobile equipped with the same.

Conventionally, automobiles equipped with this type of fuel cell system have been proposed that prohibit the unlocking of the passenger compartment door when the hydrogen gas concentration in the passenger compartment exceeds a predetermined value (for example, a patent) Reference 1). In this car, when the hydrogen gas concentration in the passenger compartment exceeds a predetermined value, not only the door unlocking is prohibited, but also the situation is notified by notification, or ventilation is installed by driving with a ventilation fan attached. It is intended.
JP 2003-123803 A

  However, in the above-described fuel cell system, it may be difficult to accurately detect the target gas concentration depending on the operating state and operating environment of the fuel cell. For example, when driving an automobile equipped with a fuel cell system at a high altitude, the target gas concentration cannot be accurately detected because the atmospheric pressure is low, and the target gas concentration is low because the temperature is low in cold regions. May not be detected accurately. If the target gas concentration cannot be accurately detected, malfunction of a device that operates based on the gas concentration also occurs.

  One object of the fuel cell system of the present invention and a vehicle equipped with the fuel cell system is to more accurately detect the concentration of a predetermined gas in the air in the external space of the fuel cell system. Another object of the fuel cell system of the present invention and a vehicle equipped with the fuel cell system is to perform more appropriate processing based on the concentration of a predetermined gas.

  The fuel cell system of the present invention and a vehicle equipped with the fuel cell system employ the following means in order to achieve at least a part of the above object.

The first fuel cell system of the present invention comprises:
A fuel cell system having a fuel cell,
Predetermined gas concentration detection means for detecting the concentration of the predetermined gas in the air in the external space of the fuel cell system;
Concentration correcting means for correcting the concentration of the predetermined gas detected by the predetermined gas concentration detecting means based on the operating state and / or operating environment of the fuel cell;
It is a summary to provide.

  In the first fuel cell system of the present invention, the concentration of the predetermined gas in the air in the external space of the fuel cell system is detected, and the concentration of the predetermined gas detected based on the operating state and operating environment of the fuel cell is corrected. . Therefore, the concentration of the predetermined gas can be made more accurate. Here, the fuel cell uses air as the oxidizing gas, and the predetermined gas may be oxygen.

The second fuel cell system of the present invention comprises:
A fuel cell system having a fuel cell and a drive device driven by electric power from the fuel cell,
Predetermined gas concentration detection means for detecting the concentration of the predetermined gas in the air in the external space of the fuel cell system;
Concentration correcting means for correcting the concentration of the predetermined gas detected by the predetermined gas concentration detecting means based on the operating state and / or operating environment of the driving device;
It is a summary to provide.

  In the second fuel cell system of the present invention, the concentration of a predetermined gas in the air in the external space of the fuel cell system is detected and detected based on the operating state and operating environment of the driving device driven by the power from the fuel cell. The concentration of the predetermined gas is corrected. Therefore, the concentration of the predetermined gas can be made more accurate. Here, the fuel cell uses air as the oxidizing gas, and the predetermined gas may be oxygen.

  In the first or second fuel cell system of the present invention, the concentration correction unit corrects the concentration of the predetermined gas using at least one of atmospheric pressure, temperature, and humidity at which the system is operated as the operating environment. It can also be a means. In this way, since changes in atmospheric pressure, temperature, and humidity are taken into account, the concentration of the predetermined gas can be made more accurate.

  The first or second fuel cell system of the present invention further includes an abnormality output unit that outputs an abnormality when the concentration of the predetermined gas corrected by the concentration correction unit reaches a predetermined concentration or less or exceeds a predetermined concentration. It can also be. In this way, an abnormality based on the concentration of the predetermined gas can be output.

  Furthermore, the first or second fuel cell system of the present invention further comprises system stop means for stopping the system when the concentration of the predetermined gas corrected by the concentration correction means reaches a predetermined concentration or less or exceeds a predetermined concentration. It can also be. By so doing, it is possible to suppress further decrease or increase in the concentration of the predetermined gas.

  The automobile of the present invention is the first or second fuel cell system of the present invention according to any one of the above-described aspects, that is, basically a fuel cell system having a fuel cell, and is external to the fuel cell system. A predetermined gas concentration detecting means for detecting the concentration of the predetermined gas in the air in the space, and a concentration of the predetermined gas detected by the predetermined gas concentration detecting means based on the operating state and / or operating environment of the fuel cell. A fuel cell system comprising: a first fuel cell system of the present invention comprising a concentration correction means; and a fuel cell and a drive device that is driven by electric power from the fuel cell, in an external space of the fuel cell system Predetermined gas concentration detection means for detecting the concentration of the predetermined gas in the air, and the predetermined gas concentration detection based on the operating state and / or operating environment of the drive device. And summarized in that mounting a second fuel cell system of the present invention and a density correction means for correcting the concentration of the predetermined gas detected by means.

  Since the first or second fuel cell system of the present invention according to any one of the above-described aspects is mounted on the automobile of the present invention, the effects exhibited by the first or second fuel cell system of the present invention, for example, predetermined The same effect as the effect of making the gas concentration more accurate can be obtained.

  In such an automobile according to the present invention, the predetermined gas concentration detecting means may be mounted in the passenger compartment, and the external space of the fuel cell system may be the passenger compartment. In this way, it is possible to detect the concentration of the predetermined gas in the passenger compartment as a more accurate one, and to deal with it appropriately. In this case, ventilation means for ventilating the passenger compartment, and ventilation of the passenger compartment when the concentration of the predetermined gas corrected by the concentration correction means during driving of the vehicle reaches a predetermined concentration or lower or a predetermined concentration or higher. And a control means for controlling the ventilation means so as to be performed. If it carries out like this, even if predetermined gas reaches more than predetermined concentration or below predetermined concentration, it can make it less than predetermined concentration or more than predetermined concentration by ventilation.

  In the automobile of the present invention, the predetermined gas concentration detection means may be attached outside the passenger compartment, and the external space of the fuel cell system may be a space around the vehicle that houses the vehicle. By doing so, the concentration of the predetermined gas in the space around the vehicle such as a garage can be detected as a more accurate one, and this can be dealt with appropriately. In this case, it is possible to provide notifying means for notifying abnormality when the concentration of the predetermined gas corrected by the concentration correcting means reaches a predetermined concentration or lower or higher than a predetermined concentration while the vehicle is stopped. . In this way, it can be notified that the predetermined gas has reached a predetermined concentration or lower or a predetermined concentration or lower. As a notification method, various methods such as sound, light, and vibration can be used.

  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 vehicle 20 equipped with a fuel cell system according to an embodiment of the present invention. As shown in the figure, the fuel cell vehicle 20 according to the embodiment includes a humidifier 38 that is supplied from a hydrogen high-pressure tank 32 and is circulated by a circulation pump 34, and is humidified by hydrogen supplied from an air compressor 36 and water vapor in exhaust gas. Driven by the fuel cell 30 that generates electric power using oxygen in the air humidified by the inverter, the inverter 26 that converts DC power from the fuel cell 30 into three-phase AC power, and the three-phase AC power converted by the inverter 26 A traveling motor 28 that outputs power to the drive wheels 22a and 22b via the differential gear 24, and the output voltage of the fuel cell 30 are adjusted, and the DC power on the fuel cell 30 side is converted into a low-voltage DC voltage to convert the battery 42 DC / DC converter 40 to be supplied to the low pressure auxiliary machine 44 and an electronic control unit for controlling the entire vehicle 0 and a.

  Although not shown, the fuel cell 30 is constituted by a fuel cell stack in which a plurality of unit cells each composed of an electrolyte membrane and an anode electrode and a cathode electrode sandwiching the electrolyte membrane are stacked together with a separator that forms a partition wall between the cells. In addition, power is generated by an electrochemical reaction between hydrogen gas supplied to the anode electrode and air supplied to the cathode electrode through a gas passage formed in the separator. Although not shown, the fuel cell 30 is provided with a circulation path through which a cooling medium (for example, cooling water) can be circulated. The circulation of the cooling medium in the circulation path causes the temperature in the fuel cell 30 to be an appropriate temperature (for example, , 65 ° C. to 85 ° C.). Further, power generated by the fuel cell 30 is supplied to auxiliary fuel cell devices such as the circulation pump 34 and the air compressor 36 necessary for the operation of the fuel cell 30.

  The traveling motor 28 is configured as, for example, a well-known synchronous generator motor that functions as an electric motor and also as a generator, and serves as an electric motor according to the depression amount of the accelerator pedal 83 and the brake pedal 85 of the driver and the vehicle speed V. Or it drives as a generator.

  The electronic control unit 70 is configured as a microprocessor centered on the CPU 72. In addition to the CPU 72, a ROM 74 that stores processing programs and the like, a RAM 76 that temporarily stores data, an input / output port (not shown), And a communication port. The electronic control unit 70 includes a voltage Vfc from the voltage sensor 52 attached between the output terminals of the fuel cell 30, a current Ifc from the current sensor 54 attached to the power line from the output terminal of the fuel cell 30, and travel. Rotation position from a rotation position detection sensor 29 that detects the position of the rotor of the motor 28, a shift position from the shift position sensor 82 that detects the position of the shift lever 81, and an accelerator pedal position that detects the depression amount of the accelerator pedal 83 The accelerator opening Acc from the sensor 84, the brake position from the brake position sensor 86 that detects the amount of depression of the brake pedal 85, the vehicle speed V from the vehicle speed sensor 88 that detects the traveling speed of the vehicle, and the passenger compartment mounted in the passenger compartment Acid in passenger compartment from oxygen concentration sensor 91 Concentration Cin, passenger compartment temperature Tin from the passenger compartment temperature sensor 92 mounted in the passenger compartment, oxygen outside the vehicle from the outside oxygen concentration sensor 93 attached to the inside of the front wheel fender, the inside of the rear wheel fender, etc. The input port includes the concentration Cout, the temperature Tout outside the vehicle from the outside temperature sensor 94 mounted on the inside of the fender for the front wheel and the inside of the fender for the rear wheel, the atmospheric pressure Pa from the atmospheric pressure sensor 95 for detecting the atmospheric pressure, etc. Is entered through. The electronic control unit 70 also supplies a drive signal to the circulation pump 34, a drive signal to the air compressor 36, a switching signal to the inverter 26, a voltage command Vfc * to the DC / DC converter 40, and a motor 96 for an electric window. A driving signal, a horn signal to the horn 97, a lighting signal to a warning lamp 98 such as a hazard lamp or a caution lamp in the passenger compartment, and the like are output via an output port. The electronic control unit 70 communicates with an electronic control unit (hereinafter referred to as an air conditioner ECU) 60 of an air conditioner, which is an air conditioner in the passenger compartment, via a communication port. Drive signal exchange.

  Next, the operation of the fuel cell vehicle 20 of the embodiment configured as described above, particularly the operation when responding to the change in the oxygen concentration in the air in the passenger compartment or around the vehicle will be described. FIG. 2 is a flowchart illustrating an example of an abnormality monitoring process routine executed by the electronic control unit 70 of the embodiment. This routine is repeatedly executed every predetermined time (for example, every several seconds).

  When the abnormality monitoring processing routine is executed, the CPU 72 of the electronic control unit 70 firstly, the passenger compartment oxygen concentration Cin from the passenger compartment oxygen concentration sensor 91, the vehicle exterior oxygen concentration Cout from the vehicle exterior oxygen concentration sensor 93, and the passenger compartment temperature sensor. A process of inputting data necessary for control, such as a passenger compartment temperature Tin from 92, an outside temperature Tout from the outside temperature sensor 94, an atmospheric pressure Pa from the atmospheric pressure sensor 95, and a vehicle speed V from the vehicle speed sensor 88 is executed (step). S100).

When the data is input in this way, the passenger compartment oxygen based on the temperature correction coefficients KTin, KTout and the atmospheric pressure Pa for correcting the passenger compartment oxygen concentration Cin and the vehicle exterior oxygen concentration Cout based on the input passenger compartment temperature Tin and vehicle exterior temperature Tout. The atmospheric pressure correction coefficient KP for correcting the concentration Cin and the outside oxygen concentration Cout is set (step S110), and the passenger compartment oxygen concentration Cin and the outside oxygen are set using the set temperature correction coefficients KTin and KTout and the atmospheric pressure correction coefficient KP. The density Cout is corrected by the following equations (1) and (2) (step S120). Here, in the embodiment, the temperature correction coefficients KTin and KTout and the atmospheric pressure correction coefficient KP are set to a reference pressure (for example, 1....) At a reference temperature (for example, 25 ° C.) with respect to the passenger compartment oxygen concentration sensor 91 and the vehicle exterior oxygen concentration sensor 93. 01325 × 10 ⁵ [Pa]) is adjusted so that no correction is necessary, and the relationship between the temperature T and the temperature correction coefficient KT and the relationship between the atmospheric pressure Pa and the atmospheric pressure correction coefficient KP are experimentally obtained to correct the temperature. By storing the coefficient setting map and the atmospheric pressure correction coefficient setting map in the ROM 74 in advance, when the temperature T and the atmospheric pressure Pa are given, the temperature correction coefficient KT and the atmospheric pressure correction coefficient KP are derived from the corresponding maps. It was supposed to be set. An example of the temperature correction coefficient setting map is shown in FIG. 3, and an example of the atmospheric pressure correction coefficient setting map is shown in FIG.

Cin = KTin ・ KP ・ Cin (1)
Cout = KTout ・ KP ・ Cout (2)

  When the passenger compartment oxygen concentration Cin and the vehicle exterior oxygen concentration Cout are thus corrected, it is determined based on the vehicle speed V whether or not the vehicle is traveling (step S130). When it is determined that the vehicle is traveling, the passenger compartment oxygen concentration Cin is compared with the threshold values C1 and C2 (step S140). Here, the threshold value C1 is set to a concentration (for example, 19%, etc.) that is slightly lower than the oxygen concentration in the normal air as the oxygen concentration that determines the necessity of ventilation in the passenger compartment, and the threshold value C2 is ventilated. In addition, the concentration of oxygen that is determined not only to stop the system is set to a concentration (for example, 18%) lower than the threshold value C1. When the passenger compartment oxygen concentration Cin is larger than both the threshold values C1 and C2, it is determined that neither ventilation nor system stop is necessary, and the abnormality monitoring processing routine is ended. When the passenger compartment oxygen concentration Cin is greater than the threshold C2 but less than the threshold C1, it is determined that the passenger compartment needs to be ventilated, and a control signal is output to the air conditioner EUC 60 so that the air conditioner in the passenger compartment is operated in the outside air introduction mode. At the same time, a drive signal is output to the motor 96 for the electric window so that the window can be opened (step S160), and the abnormality monitoring processing routine is terminated. Thereby, ventilation of a passenger compartment can be performed and the fall of the oxygen concentration of a passenger compartment can be suppressed. When the passenger compartment oxygen concentration Cin is less than the threshold value C2, it is determined that the system needs to be stopped, the circulation pump 34 and the air compressor 36 are stopped to stop the fuel cell system (step S150), and the outside air by the air conditioner in the passenger compartment A drive signal is outputted to the air conditioner ECU 60 and the motor 96 for the electric window so that the ventilation in the operation in the introduction mode and the opening of the window is performed (step S160), and the abnormality monitoring processing routine is ended. Thereby, the fall of the oxygen concentration of the passenger compartment of the passenger compartment can be suppressed, and the passenger compartment can be ventilated.

  On the other hand, when it is determined in step S130 that the vehicle is not traveling, the vehicle oxygen concentration Cout is compared with threshold values C3 and C4 (step S170). Here, the threshold value C3 and the threshold value C4 are concentrations slightly lower than the normal oxygen concentration in air (for example, 19%) as the oxygen concentration when determining the decrease in the oxygen concentration in the air around the vehicle in two stages. A lower density (for example, 18%) is set. When the oxygen concentration outside the vehicle Cout is larger than both the threshold values C3 and C4, it is determined that the oxygen concentration in the air around the vehicle is normal, and the abnormality monitoring processing routine is terminated. When the oxygen concentration Cout outside the vehicle is greater than the threshold C4 but less than the threshold C3, it is determined that the oxygen concentration in the air around the vehicle has slightly decreased, and a horn 97 generates a horn, a hazard lamp, a caution lamp in the passenger compartment The warning lamp 98 is turned on to notify the decrease in the oxygen concentration (step S190), and the abnormality monitoring processing routine is terminated. Thereby, it is possible to notify the passengers in the passenger compartment and the people around the vehicle of the decrease in the oxygen concentration in the air around the vehicle. When the outside oxygen concentration Cout is less than the threshold C4, it is determined that the system needs to be stopped, the circulation pump 34 and the air compressor 36 are stopped to stop the fuel cell system (step S180), and a horn 97 is generated. A warning lamp 98 such as a hazard lamp or a caution lamp in the passenger compartment is turned on to notify the decrease in oxygen concentration (step S190), and the abnormality monitoring processing routine is terminated. As a result, it is possible to suppress further reduction in the oxygen concentration in the air around the vehicle and to inform the passengers in the passenger compartment and the people around the vehicle of the decrease in the oxygen concentration in the air around the vehicle. The situation in which the oxygen concentration in the air around the vehicle decreases can be considered when the operation of the fuel cell system is continued in a closed space such as a closed garage.

  According to the fuel cell vehicle 20 of the embodiment described above, the passenger compartment oxygen concentration Cin and the vehicle exterior oxygen concentration Cout are corrected by the vehicle passenger compartment temperature Tin, the vehicle exterior temperature Tout, and the atmospheric pressure Pa. And the oxygen concentration in the air around the vehicle can be detected more appropriately. Further, according to the fuel cell vehicle 20 of the embodiment, when the vehicle is running, the oxygen concentration in the air in the passenger compartment is ventilated by ventilating the passenger compartment when the passenger compartment oxygen concentration Cin is less than the threshold value C1. Can be suppressed, and when the passenger compartment oxygen concentration Cin reaches less than the threshold C2, the fuel cell system is stopped to prevent the oxygen concentration in the passenger compartment from further decreasing. be able to. Furthermore, according to the fuel cell vehicle 20 of the embodiment, when the vehicle is not traveling, the horn 97 turns on the warning whistle or the warning light 98 when the vehicle outside oxygen concentration Cout is less than the threshold value C3, and the vehicle is in the air around the vehicle. The oxygen concentration in the air around the vehicle is further reduced by stopping the fuel cell system when the oxygen concentration Cout outside the vehicle reaches less than the threshold value C4. Can be deterred. As a result, when the fuel cell vehicle 20 is idling in a closed space such as a garage, the oxygen concentration in the air in the closed space can be prevented from decreasing without knowledge.

  In the fuel cell vehicle 20 of the embodiment, when the vehicle is not traveling, the processing using the passenger compartment oxygen concentration Cin (steps S140 to S160) is not performed, but the passenger compartment oxygen is also performed when the vehicle is not traveling. There is no problem even if processing with the density Cin is performed.

  In the fuel cell vehicle 20 of the embodiment, the processing based on the passenger compartment oxygen concentration Cin has two stages of the ventilation process based on the thresholds C1 and C2 and the system stop process. It is good also as a process more than a step. Further, in the fuel cell vehicle 20 of the embodiment, the processing based on the oxygen concentration Cout outside the vehicle has two steps of the notification processing based on the thresholds C3 and C4 and the system stop processing, but the processing of three or more steps such as performing a plurality of notification processing. It is good.

  In the fuel cell vehicle 20 of the embodiment, the atmospheric pressure correction coefficient KP and the temperature correction coefficient using the atmospheric pressure Pa, the passenger compartment temperature Tin, and the vehicle exterior temperature Tout as the operating environment of the fuel cell 30 and the driving motor 28. The passenger compartment oxygen concentration Cin and the vehicle exterior oxygen concentration Cout are corrected by KTin and KTout. The passenger compartment oxygen concentration Cin and the vehicle exterior oxygen concentration Cout may be corrected only by the atmospheric pressure correction coefficient KP without performing correction using the temperature correction coefficients KTin and KTout. Further, the passenger compartment oxygen concentration Cin and the vehicle exterior oxygen concentration Cout may be corrected using a correction coefficient using state variables other than temperature and atmospheric pressure Pa. In this case, for example, the passenger compartment oxygen concentration Cin or the vehicle exterior oxygen concentration Cout may be corrected using the passenger compartment humidity Hin or the vehicle exterior humidity Hout. When correcting by this humidity, the passenger compartment oxygen concentration sensor 91 and the vehicle exterior oxygen concentration sensor 93 are adjusted so that no correction is required at the reference humidity, and the relationship between the humidity H and the humidity correction coefficient KH is obtained through experiments. 5 is stored in advance in the ROM 74 as a humidity correction coefficient setting map as illustrated in FIG. 5, and when the humidity H is given, the humidity correction coefficient KH is derived from the corresponding map, and the derived humidity correction coefficients KHin and KHout are obtained. What is necessary is just to multiply the passenger compartment oxygen concentration Cin detected by the passenger compartment oxygen concentration sensor 91 and the vehicle exterior oxygen concentration sensor 93 and the vehicle exterior oxygen concentration Cout. Further, the passenger compartment oxygen concentration Cin and the vehicle exterior oxygen concentration Cout may be corrected based on the operating state (for example, output power) of the fuel cell 30 and the driving state (for example, power consumption) of the traveling motor 28.

  In the fuel cell vehicle 20 of the embodiment, the passenger compartment oxygen concentration Cin and the vehicle exterior oxygen concentration Cout are detected and corrected, and more appropriate processing corresponding to the oxygen concentration in the air in the passenger compartment and around the vehicle is performed. The hydrogen concentration in the air in the passenger compartment or around the vehicle may be detected and corrected to perform more appropriate processing corresponding to the hydrogen concentration in the air in the passenger compartment or around the vehicle, or in the passenger compartment or around the vehicle. Detects and corrects the concentration of the gas contained in the fuel gas and oxidizing gas in the air, and performs a more appropriate treatment corresponding to the concentration of the fuel gas and oxidizing gas in the air in the passenger compartment and around the vehicle It may be a thing.

  In the embodiments, the best mode for carrying out the present invention using the fuel cell vehicle 20 equipped with the fuel cell system has been described. However, the fuel cell system is mounted on a moving body such as a vehicle other than an automobile, a ship, and an aircraft. It can be used, or it can be built into a non-moving power generation facility.

  The best mode for carrying out the present invention has been described with reference to the embodiments. However, the present invention is not limited to these embodiments, and various modifications can be made without departing from the gist of the present invention. Of course, it can be implemented in the form.

  The present invention can be used in the fuel cell system manufacturing industry and the like.

It is a block diagram which shows the outline of a structure of the fuel cell vehicle 20 carrying the fuel cell system which is one Example of this invention. It is a flowchart which shows an example of the abnormality monitoring process routine performed by the electronic control unit 70 of an Example. It is explanatory drawing which shows an example of the map for temperature correction coefficient setting. It is explanatory drawing which shows an example of the map for atmospheric pressure correction coefficient setting. It is explanatory drawing which shows an example of the map for humidity correction coefficient setting.

Explanation of symbols

20 Fuel Cell Vehicle, 22a, 22b Drive Wheel, 24 Differential Gear, 26 Inverter, 28 Traveling Motor, 29 Rotation Position Detection Sensor, 30 Fuel Cell, 34 Circulation Pump, 36 Air Compressor, 38 Humidifier, 40 DC / DC Converter 42 Battery, 44 Low voltage auxiliary machine, 52 Voltage sensor, 54 Current sensor, 60 Air conditioner ECU, 70 Electronic control unit, 72 CPU, 74 ROM, 76 RAM, 81 Shift lever, 82 Shift position sensor, 83 Accelerator pedal, 84 Accelerator Pedal position sensor, 85 Brake pedal, 86 Brake position sensor, 88 Vehicle speed sensor, 91 Passenger compartment oxygen concentration sensor, 92 Passenger compartment temperature sensor, 93 Outside oxygen concentration sensor, 94 Outside vehicle temperature sensor, 95 Atmospheric pressure sensor, 96 Motor, 97 Horn, 98 Warning light.

Claims (11)

A fuel cell system having a fuel cell,
Predetermined gas concentration detection means for detecting the concentration of the predetermined gas in the air in the external space of the fuel cell system;
Concentration correcting means for correcting the concentration of the predetermined gas detected by the predetermined gas concentration detecting means based on the operating state and / or operating environment of the fuel cell;
A fuel cell system comprising: A fuel cell system having a fuel cell and a drive device driven by electric power from the fuel cell,
Predetermined gas concentration detection means for detecting the concentration of the predetermined gas in the air in the external space of the fuel cell system;
Concentration correcting means for correcting the concentration of the predetermined gas detected by the predetermined gas concentration detecting means based on the operating state and / or operating environment of the driving device;
A fuel cell system comprising: The fuel cell system according to claim 1 or 2, wherein
The fuel cell uses air as an oxidizing gas,
The fuel cell system, wherein the predetermined gas is oxygen.   4. The fuel cell system according to claim 1, wherein the concentration correction means is means for correcting the concentration of the predetermined gas using at least one of atmospheric pressure, temperature, and humidity at which the system is operated as the operating environment. .   5. The fuel cell system according to claim 1, further comprising: an abnormality output unit that outputs an abnormality when the concentration of the predetermined gas corrected by the concentration correction unit reaches a predetermined concentration or less.   6. The fuel cell system according to claim 1, further comprising: a system stop unit that stops the system when the concentration of the predetermined gas corrected by the concentration correction unit reaches a predetermined concentration or less.   An automobile equipped with the fuel cell system according to claim 1. The automobile according to claim 7,
The predetermined gas concentration detection means is mounted in the passenger compartment,
The external space of the fuel cell system is a passenger compartment. The automobile according to claim 8,
A ventilation means for ventilating the passenger compartment;
Control means for controlling the ventilation means so that the passenger compartment is ventilated when the concentration of the predetermined gas corrected by the concentration correction means reaches a predetermined concentration or less or exceeds a predetermined concentration while the vehicle is running. When,
Automobile equipped with. The automobile according to claim 7,
The predetermined gas concentration detection means is attached outside the passenger compartment,
The external space of the fuel cell system is a space around the vehicle that houses the vehicle. 11. The automobile according to claim 10, further comprising a notifying means for notifying an abnormality when the concentration of the predetermined gas corrected by the concentration correcting means reaches a predetermined concentration or lower or exceeds a predetermined concentration while the vehicle is stopped.

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