JP2008234546A - Fuel cell vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fuel cell moving body capable of suppressing the theft of a vehicle by suppressing unauthorized getting on of the vehicle and unauthorized starting. <P>SOLUTION: This fuel cell vehicle S, with a fuel cell 10 mounted as a drive source, comprises an opening/closing sensor 81 detecting opening/closing of an opening/closing part 110, such as, a door or a window of the vehicle S; an alarm part 83 giving an alarm; and a control device 4, outputting an alarm from the alarm 83, when determining that the opening/closing part 110, such as door or window, is opened in unauthorized manner based on a detection signal from the opening/closing sensor 81. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a fuel cell vehicle equipped with a fuel cell that receives supply of a reaction gas and generates power by an electrochemical reaction.

In recent years, a fuel cell vehicle using a fuel cell that generates power by an electrochemical reaction between a fuel gas and an oxidizing gas as an energy source has attracted attention. The fuel cell vehicle is provided with a mechanism for controlling the air supply operation to the fuel cell to prevent power generation of the fuel cell and prohibiting the activation when a driver's unintentional starting operation is performed. Has been developed (see, for example, Patent Document 1).
JP 2005-94834 A

  However, in the above fuel cell vehicle, even if the door or window is illegally opened and the vehicle is boarded, if the ignition key is properly operated, the fuel cell is started and the fuel cell vehicle is driven. May be possible.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a fuel cell vehicle capable of suppressing unauthorized boarding into the vehicle and unauthorized starting.

  In order to achieve the above object, a fuel cell vehicle according to the present invention is a fuel cell vehicle equipped with a fuel cell that is supplied with a reaction gas and generates power by an electrochemical reaction as a drive source, and opens and closes the vehicle opening / closing part. An open / close sensor to detect, an alarm unit that issues an alarm, and a control unit that outputs an alarm from the alarm unit when it is determined that the vehicle open / close unit has been illegally opened based on a detection signal from the open / close sensor; It has.

  According to this configuration, when the vehicle opening / closing part is opened illegally, the illegal boarding can be eliminated by the warning.

  In addition, in the case of including a start detection sensor that detects an operation of a start unit that starts the fuel cell, and a valve provided in a supply path that supplies fuel gas to the fuel cell, After an alarm from the alarm unit, the fuel gas may be released to the outside by opening the valve of the supply path based on a detection signal from the start detection sensor.

  According to this configuration, even if the fuel cell is started by an unauthorized person, the fuel cell can be prevented from starting and thus the fuel cell vehicle can be prevented from being driven.

  According to the present invention, it is possible to suppress unauthorized boarding and unauthorized start into the vehicle.

  Hereinafter, a fuel cell system 1 according to an embodiment of the present invention will be described with reference to the drawings. In the present embodiment, an example in which the present invention is applied to an on-vehicle power generation system of a fuel cell vehicle will be described.

  As shown in FIG. 1, the fuel cell system 1 according to the present embodiment includes a fuel cell 10 that is supplied with a reaction gas (oxidizing gas and fuel gas) and generates electric power through an electrochemical reaction. An oxidant gas piping system 2 for supplying air as an oxidant gas, a hydrogen gas piping system (fuel supply system) 3 for supplying hydrogen gas as a fuel gas to the fuel cell 10, a control device 4 for integrated control of the entire system, etc. I have.

  The fuel cell 10 has a stack structure in which a required number of unit cells that generate power upon receiving a reaction gas are stacked. The electric power generated by the fuel cell 10 is supplied to a PCU (Power Control Unit) 11. The PCU 11 includes an inverter, a DC-DC converter, and the like that are disposed between the fuel cell 10 and the traction motor 12. Further, the fuel cell 10 is provided with a current sensor 13 for detecting a current during power generation.

  The oxidant gas piping system 2 includes an air supply passage 21 that supplies the oxidant gas (air) humidified by the humidifier 20 to the fuel cell 10, and an air exhaust that guides the oxidant off-gas discharged from the fuel cell 10 to the humidifier 20. A flow path 22 and an exhaust flow path 23 for guiding the oxidizing off gas from the humidifier 20 to the outside are provided. The air supply passage 21 is provided with a compressor 24 that takes in the oxidizing gas in the atmosphere and pumps it to the humidifier 20.

  The hydrogen gas piping system 3 includes a hydrogen tank 30 as a fuel supply source that stores high-pressure (for example, 70 MPa) hydrogen gas, and a fuel supply passage for supplying the hydrogen gas in the hydrogen tank 30 to the fuel cell 10. A hydrogen supply flow path 31 and a circulation flow path 32 for returning the hydrogen off gas discharged from the fuel cell 10 to the hydrogen supply flow path 31 are provided. The hydrogen gas piping system 3 is an embodiment of the fuel supply system in the present invention.

  Instead of the hydrogen tank 30, a reformer that generates a hydrogen-rich reformed gas from a hydrocarbon-based fuel, a high-pressure gas tank that stores the reformed gas generated by the reformer in a high-pressure state, and Can also be employed as a fuel supply source. A tank having a hydrogen storage alloy may be employed as a fuel supply source.

  The hydrogen supply flow path 31 is provided with a shutoff valve 33 that shuts off or allows the supply of hydrogen gas from the hydrogen tank 30, a regulator 34 that adjusts the pressure of the hydrogen gas, and an injector 35. Further, on the upstream side of the injector 35, the primary side pressure sensor 41 and the temperature sensor 42 for detecting the pressure and temperature of the hydrogen gas in the hydrogen supply passage 31, and the inside of the hydrogen supply passage 31 reach a predetermined operating pressure. A relief valve 100 is provided that is opened when the operation is performed.

  Further, on the downstream side of the injector 35 and upstream of the junction between the hydrogen supply flow path 31 and the circulation flow path 32, a secondary side pressure sensor 43 that detects the pressure of the hydrogen gas in the hydrogen supply flow path 31. Is provided.

  The regulator 34 is a device that regulates the upstream pressure (primary pressure) to a preset secondary pressure. In the present embodiment, a mechanical pressure reducing valve that reduces the primary pressure is employed as the regulator 34. The mechanical pressure reducing valve has a structure in which a back pressure chamber and a pressure adjusting chamber are formed with a diaphragm therebetween, and the primary pressure is reduced to a predetermined pressure in the pressure adjusting chamber by the back pressure in the back pressure chamber. Thus, a publicly known configuration for the secondary pressure can be employed.

  The injector 35 is an electromagnetically driven on-off valve capable of adjusting the gas flow rate and the gas pressure by driving the valve body directly with a predetermined driving cycle with an electromagnetic driving force and separating it from the valve seat. . The injector 35 includes a valve seat having an injection hole for injecting gaseous fuel such as hydrogen gas, a nozzle body for supplying and guiding the gaseous fuel to the injection hole, and an axial direction (gas flow direction) with respect to the nozzle body. And a valve body that is movably accommodated and opens and closes the injection hole.

  A discharge flow path 38 is connected to the circulation flow path 32 via a gas-liquid separator 36 and an exhaust drain valve 37. The gas-liquid separator 36 recovers moisture from the hydrogen off gas. The exhaust / drain valve 37 is operated according to a command from the control device 4 to discharge moisture collected by the gas-liquid separator 36 and hydrogen off-gas (fuel off-gas) containing impurities in the circulation channel 32 to the outside. (Purge).

  In addition, the circulation channel 32 is provided with a hydrogen pump 39 that pressurizes the hydrogen off gas in the circulation channel 32 and sends it to the hydrogen supply channel 31 side. The hydrogen off-gas discharged through the exhaust / drain valve 37 and the discharge passage 38 is diluted by the diluter 40 and merges with the oxidizing off-gas in the exhaust passage 23.

  The control device 4 detects an operation amount of an acceleration operation member (accelerator or the like) provided in the fuel cell vehicle S, and controls an acceleration request value (eg, a required power generation amount from a load device such as the traction motor 12) Receives information and controls the operation of various devices in the system.

  In addition to the traction motor 12, the load device is an auxiliary device (for example, a compressor 24, a hydrogen pump 39, a cooling pump motor, etc.) required for operating the fuel cell 10, and a fuel cell vehicle S It is a generic term for power consumption devices including actuators used in various devices involved (transmissions, wheel control devices, steering devices, suspension devices, etc.), air conditioners (air conditioners) in the passenger space, lighting, audio, and the like.

  The control device 4 is configured by a computer system (not shown). Such a computer system includes a CPU, ROM, RAM, HDD, input / output interface, display, and the like, and various control operations are realized by the CPU reading and executing various control programs recorded in the ROM. It is like that.

  As shown in FIG. 1, the vehicle S equipped with the fuel cell system 1 includes an opening / closing sensor 81 that detects opening / closing of a door and a window that are the opening / closing portion 110 of the vehicle S, and an ignition that starts the fuel cell system 1. A start detection sensor 82 for detecting the start of the key is provided. The open / close sensor 81 and the start detection sensor 82 are respectively connected to the control device 4, and detection signals from the open / close sensor 81 and the start detection sensor 82 are transmitted to the control device 4.

  Further, an alarm unit 83 is connected to the control device 4, and a sound is emitted from the alarm unit 83 by an alarm signal from the control device 4. Furthermore, the relief valve 100 described above has an electromagnetic drive unit 84, which is connected to the control device 4 and is driven by input of a drive signal from the control device 4, thereby supplying a hydrogen supply flow path. Regardless of the pressure of 31, the relief valve 100 can be opened.

  In the vehicle S provided with the fuel cell system 1 described above, for example, when an opening / closing part 110 such as a door or a window of the vehicle S is illegally opened by a person other than an authorized user such as the owner of the vehicle S, FIG. As shown, a detection signal is transmitted from the open / close sensor 81 to the control device 4 (step S1).

  Then, the control device 4 outputs an alarm signal to the alarm unit 83 (step S2), whereby the alarm unit 83 emits an alarm sound or an alarm message. Note that the warning message includes, for example, a content notifying that an abnormality has occurred in the vehicle S such as “during hydrogen release”.

  In spite of the alarm by the alarm unit 83, when the ignition key is operated and the start operation of the fuel cell 10 is started, a detection signal is transmitted to the control device 4 from the start detection sensor 82 that detects the start of the ignition key. (Step S3). Then, the control device 4 outputs a drive signal to the electromagnetic drive unit 84 of the relief valve 100 (step S5), whereby the electromagnetic drive unit 84 is driven and the relief valve 100 is opened.

  Thereby, the hydrogen gas sent into the hydrogen supply flow path 31 is released from the relief valve 100, the start of the fuel cell 10 is prevented, and the vehicle is disabled. At the same time, the control device 4 closes the shutoff valve 33 and stops the supply of hydrogen gas from the hydrogen tank 30 to the hydrogen supply passage 31.

  As described above, according to the embodiment, when the control device 4 determines that the opening / closing unit 110 such as a door or a window has been opened illegally based on the detection signal from the opening / closing sensor 81, the alarm unit Since the alarm is output from 83, when the door or window is illegally opened, the illegal boarding can be eliminated by the alarm.

  Further, after the alarm from the alarm unit 83, based on the detection signal from the start detection sensor 82, the relief valve 100 of the hydrogen supply passage 31 is opened by the control device 4 and hydrogen gas is released to the outside. Even if the fuel cell 10 is started by a person who has boarded the vehicle, the fuel cell 10 can be prevented from starting and the vehicle can be disabled.

1 is a system configuration diagram schematically showing a fuel cell system provided in a fuel cell vehicle according to an embodiment of the present invention. It is a block diagram which shows roughly the control system of a fuel cell vehicle.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 4 ... Control apparatus, 10 ... Fuel cell, 31 ... Hydrogen supply flow path, 81 ... Opening / closing sensor, 82 ... Start-up detection sensor, 83 ... Alarm part, 100 ... Relief valve (valve), 110 ... Opening / closing part (vehicle opening / closing part) , S: Vehicle (fuel cell vehicle).

Claims (2)

A fuel cell vehicle equipped with a fuel cell that receives a supply of reaction gas and generates power by an electrochemical reaction as a drive source,
An opening / closing sensor for detecting opening / closing of the vehicle opening / closing unit;
An alarm unit for issuing an alarm;
A control unit that outputs an alarm from the alarm unit when it is determined that the vehicle opening / closing unit is illegally opened based on a detection signal from the open / close sensor;
A fuel cell vehicle comprising: The fuel cell vehicle according to claim 1,
A start detection sensor for detecting an operation of a start unit for starting the fuel cell;
A valve provided in a supply path for supplying fuel gas to the fuel cell,
The control unit is a fuel cell vehicle that releases a fuel gas to the outside by opening a valve of the supply path based on a detection signal from the start detection sensor after an alarm from the alarm unit.

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