WO2008105522A1 - 高圧タンク温度検出システム、高圧タンクシステム - Google Patents
高圧タンク温度検出システム、高圧タンクシステム Download PDFInfo
- Publication number
- WO2008105522A1 WO2008105522A1 PCT/JP2008/053582 JP2008053582W WO2008105522A1 WO 2008105522 A1 WO2008105522 A1 WO 2008105522A1 JP 2008053582 W JP2008053582 W JP 2008053582W WO 2008105522 A1 WO2008105522 A1 WO 2008105522A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressure tank
- temperature
- amount
- detection system
- fluid
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/26—Compensating for effects of pressure changes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K15/00—Testing or calibrating of thermometers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K15/00—Testing or calibrating of thermometers
- G01K15/007—Testing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
- H01M8/04216—Reactant storage and supply, e.g. means for feeding, pipes characterised by the choice for a specific material, e.g. carbon, hydride, absorbent
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0432—Temperature; Ambient temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0432—Temperature; Ambient temperature
- H01M8/04373—Temperature; Ambient temperature of auxiliary devices, e.g. reformers, compressors, burners
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/04664—Failure or abnormal function
- H01M8/04686—Failure or abnormal function of auxiliary devices, e.g. batteries, capacitors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/01—Pure fluids
- F17C2221/012—Hydrogen
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0107—Single phase
- F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
- F17C2223/036—Very high pressure (>80 bar)
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/04—Indicating or measuring of parameters as input values
- F17C2250/0404—Parameters indicated or measured
- F17C2250/0439—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/04—Indicating or measuring of parameters as input values
- F17C2250/0404—Parameters indicated or measured
- F17C2250/0478—Position or presence
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0165—Applications for fluid transport or storage on the road
- F17C2270/0168—Applications for fluid transport or storage on the road by vehicles
- F17C2270/0178—Cars
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
- H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
Definitions
- the present invention relates to a technique for detecting temperature in a high-pressure tank, and more particularly to a technique for determining failure of a temperature sensor.
- Patent Document 1 listed below describes a technique in which a temperature detection reference resistor and a disconnection detection reference resistor are provided in order to detect disconnection while ensuring the detection accuracy of a thermistor-type temperature detector.
- Patent Document 2 discloses a configuration for detecting disconnection of a thermistor type temperature detector.
- Patent Document 3 discloses a configuration for detecting a failure such as a disconnection or a short circuit of a thermistor type temperature detector.
- Patent Document 4 below discloses a technique for detecting a disconnection based on the degree of temperature rise in temperature measurement of an electric drive device using a thermistor-type temperature detector.
- Patent Document 1 Japanese Patent Laid-Open No. 1-28 1499
- Patent Document 2 Japanese Unexamined Patent Publication No. 2005-1 56389
- Patent Document 3 Japanese Patent Laid-Open No. 2000-193533
- Patent Document 4 Japanese Patent Laid-Open No. 2001-255213 Disclosure of Invention
- the object of the present invention is to detect the failure of the temperature sensor that detects the temperature in the high-pressure tank. Is to increase.
- Another object of the present invention is to improve the reliability of temperature detection in a high-pressure tank.
- a temperature sensor that detects a temperature in a high-pressure tank filled with a high-pressure fluid, and a determination that performs failure determination of the temperature sensor based on a failure determination condition
- the failure determination condition is determined according to the amount of fluid in the high-pressure tank or a change amount thereof.
- a high-pressure tank is a container in which a high-pressure fluid is filled.
- the high pressure means at least higher than atmospheric pressure (1 atm 0.0 0 0 IMPa).
- fluid refers to gas, liquid, or a mixture of gas and liquid.
- the temperature sensor is a device that grasps the temperature state in the high-pressure tank to be measured and extracts it as information such as voltage or current.
- the high-pressure tank temperature detection system is equipped with a table or storage device and often performs information visualization or storage processing on the retrieved information.
- the determination means is means for determining a failure of the temperature sensor based on the failure determination condition, and may be configured as software or hardware.
- a temperature sensor failure is a failure that causes problems with temperature detection by the temperature sensor.
- the failure of the temperature sensor may include a failure that occurred in a peripheral device such as the display device or the storage device, in addition to the failure that occurred in the temperature sensor itself.
- a specific example of a failure is a short circuit or disconnection in a temperature sensor having an electrical system.
- the failure determination condition is a condition for determining the occurrence of a failure, and may be incorporated into the determination means in software or hardware.
- the determination of the occurrence of a failure is determined to change in at least two stages depending on the value of one or both of the amount of fluid in the high-pressure tank and the amount of change. Of course, it may be changed to multiple steps of 3 or more steps or continuous (infinite steps).
- the amount of fluid in the high-pressure tank can be obtained by direct measurement (for example, measurement of pressure, weight, etc.) or by indirect measurement (for example, estimated from filling amount, discharge amount, etc.). Good.
- the amount of change in fluid volume is It can be obtained by direct measurement or by indirect measurement.
- the amount of fluid and the amount of change may be evaluated (represented) by weight, density, volume, pressure, etc., and the amount corresponding to the amount of fluid or the amount of change (eg, frequency, refractive index, meter) (E.g., amount of rotation).
- the failure determination condition may be a function of the fluid amount itself or the change amount itself, but may be a function of another amount determined according to the fluid amount or the change amount.
- the failure determination condition may be determined according to the amount of fluid and the amount that does not depend on the amount of change.
- the failure detection of the temperature sensor is performed according to the amount of fluid in the high-pressure tank or the amount of change thereof, so that the accuracy of failure detection can be increased. It is also possible to improve the reliability with respect to the temperature detected by the temperature sensor.
- the failure determination condition is a condition based on a comparison between a detection result of a temperature sensor and a failure determination threshold value, and the failure determination threshold value is in the high-pressure tank.
- the failure determination condition is determined according to the amount of fluid in the high-pressure tank or the amount of change thereof.
- the failure detection threshold is set according to the detection characteristic, thereby improving the accuracy of failure detection. It becomes possible.
- the failure determination condition is a first condition that determines whether or not failure determination can be performed, and determines whether or not a failure occurs when failure determination can be performed.
- Including at least a second condition wherein at least the first condition is determined according to a fluid amount in the high-pressure tank or a change amount thereof, whereby the failure determination condition is defined as a fluid amount in the high-pressure tank or It is determined according to the amount of change.
- the first condition is a condition that determines whether or not a failure judgment is practically performed. In other words, the first condition is a condition that determines whether or not failure determination is performed, or that the result of failure determination is valid (when failure determination is always performed formally).
- this is a condition for determining whether or not to handle the image.
- the second condition may be determined according to the amount of fluid or the amount of change, and should not depend on these. It may be determined. According to this configuration, for example, in the case where whether or not failure determination can be performed or the accuracy of failure determination changes according to the amount of fluid in the high-pressure tank or the amount of change, the accuracy of failure determination is increased. Is possible.
- the temperature detection system includes, in addition to the temperature sensor, in the high-pressure tank according to the amount of fluid in the high-pressure tank or a change amount thereof.
- the first condition is a condition for determining whether or not a failure determination can be performed according to the temperature estimated by the estimation means, whereby the first condition is It is determined according to the amount of fluid in the high-pressure tank or the amount of change.
- the estimating means estimates the temperature of the fluid based on the amount of fluid in the high-pressure tank or the amount of change thereof.
- the estimation may be performed based on thermodynamic knowledge, or may be performed based on experimental results or empirical rules. Note that the temperature of the high-pressure tank gradually approaches the temperature around the high-pressure tank as time passes. Therefore, the estimation means may further estimate the fluid temperature based on the elapsed time after the fluid amount has changed.
- the temperature detection system includes, in addition to the temperature sensor, in the high-pressure tank according to the amount of fluid in the high-pressure tank or a change amount thereof.
- the first condition defines that a failure determination can be performed when the temperature estimated by the estimating means is within a temperature detectable range by the temperature sensor. Accordingly, the first condition is determined according to the amount of fluid in the high-pressure tank or the amount of change thereof. According to this configuration, it is possible to increase the accuracy of failure determination when, for example, whether or not failure determination can be performed or the accuracy of failure determination changes depending on the temperature in the high-pressure tank.
- the high-pressure tank temperature detection system further includes an acquisition unit configured to acquire a temperature around the high-pressure tank, and the estimation unit is further configured to be included in the high-pressure tank.
- Estimate temperature The temperature in the high-pressure tank is almost equal to the temperature around the tank in the temperature equilibrium state. Therefore, temperature change In estimating the temperature after conversion, the temperature around the tank may be considered as the temperature before the change. Alternatively, the temperature around the tank may be considered in the process of approaching the temperature equilibrium again after the temperature change.
- the amount of fluid in the Takasho tank or the amount of change thereof is associated with whether or not the failure determination can be performed.
- Correspondence information is provided, and the determination unit performs failure determination of the temperature sensor based on the association information.
- the association information may be implemented as a table or a function, for example.
- the high-pressure tank temperature detection system includes an acquisition unit that acquires an ambient temperature of the high tank, and the association information includes the amount of fluid in the high-pressure tank or a change amount thereof, and The ambient temperature is associated with whether or not the failure determination can be performed.
- the fluid filled in the high-pressure tank is a gas.
- the temperature sensor is a thermistor.
- a thermistor is a temperature sensor that uses a semiconductor, and detects the temperature based on characteristics in which the electrical resistance of the semiconductor varies greatly depending on the temperature.
- the high-pressure tank temperature detecting system includes means for detecting pressure in the high-pressure tank, and the amount of fluid in the high-pressure tank or the amount of change thereof is detected pressure or pressure. Evaluated by change. The amount of fluid or its change can be evaluated by various amounts such as weight and density (can be indicated), but here it was determined by pressure.
- the amount of change is evaluated based on a difference between the fluid amount in the high pressure tank and a reference fluid amount.
- the reference fluid amount include a fluid amount reached by normal filling, a fluid amount reached by normal discharge, and a fluid amount measured or predicted at a certain time.
- the reference fluid volume may be set based on the input, or it may be set to a fixed value.
- the high pressure tank temperature detection system is A stem, and the high-pressure tank.
- FIG. 1 is a diagram illustrating the configuration of the fuel cell vehicle according to the present embodiment.
- FIG. 2 is a schematic diagram illustrating a schematic configuration example of the thermistor.
- FIG. 3 is a diagram illustrating the relationship between voltage and temperature in the thermistor.
- FIG. 4 is a diagram illustrating the process of changing the internal pressure and temperature associated with the release of hydrogen gas.
- FIG. 5 is a diagram illustrating a range in which the thermistor disconnection determination is performed.
- FIG. 1 is a schematic diagram illustrating the configuration of a fuel cell vehicle 10 according to the present embodiment.
- the fuel cell vehicle 10 is a vehicle including a vehicle body 12 and four wheels 14.
- the fuel cell vehicle 10 is equipped with one or more hydrogen tanks 16 as high-pressure tanks.
- the hydrogen tank 16 is filled with hydrogen gas as a fluid, and in the vicinity of the valve, a pressure sensor 18 for detecting the internal pressure and a thermistor 2 for detecting the internal temperature are provided. 0 is attached.
- the fuel cell vehicle 10 is further equipped with a fuel cell 2 2 and a motor 24.
- the fuel cell 22 is a device that generates electricity by causing a chemical reaction between hydrogen gas released from the hydrogen tank 16 and oxygen in the air.
- the motor 24 converts the generated electric energy into rotational energy and transmits it to the wheels 14 to drive the fuel cell vehicle 10.
- a temperature sensor 26 that detects the ambient temperature (outside temperature) is also installed around the hydrogen tank 16.
- the fuel cell vehicle is equipped with an arithmetic device 28, a display device 38, and a storage device 40.
- the arithmetic device 28 is a computer called an ECU (electric control unit), and is a device that performs various types of information processing in the fuel cell vehicle 10 according to a program.
- Arithmetic unit 2 8 includes thermistor 20 A temperature conversion unit 3.0 is provided to convert the output electrical signal (voltage) into temperature.
- the temperature conversion unit 30 includes a conversion table 3 2 created based on the characteristics of the thermistor 20, and converts the voltage into temperature with reference to the conversion table 3 2.
- the arithmetic device 28 is provided with a failure determination unit 34 that receives outputs from the pressure sensor 18, the thermistor 20, and the temperature sensor 26 and determines the failure of the thermistor 20.
- the failure determination unit 34 is a device as a determination means, and detects disconnection or short circuit in the electrical system of the thermistor 20 with reference to the built-in determination table 36.
- the determination table 36 stores failure determination conditions as a table. Details will be described later.
- the display device 3 8 is a device provided with a LED (Issuing diode), a liquid crystal monitor, and the like, and displays the temperature converted by the temperature conversion unit 30 and the failure information output by the failure determination unit 3 4.
- the storage device 40 is a device that includes a semiconductor memory and stores the temperature converted by the temperature conversion unit 30, failure information output by the failure determination unit 34, and the like.
- Hydrogen tanks 16 are filled with hydrogen gas at gas stations and maintenance facilities. The filling amount is not necessarily limited, but normally, the filling amount is determined in consideration of the capacity of hydrogen tank 16, pressure resistance, legal regulations, etc. (for example, 70 MPa) Based on this, filling is performed. The filled hydrogen gas is released as the vehicle travels and is consumed by the fuel cell 22.
- the hydrogen tank 16 is considered empty.
- the atmospheric pressure is sufficiently small compared to the full pressure, so in the following, the amount that the hydrogen tank 16 is emptied may be considered to be approximately OMPa.
- the hydrogen gas pressure (internal pressure of the hydrogen tank 16) increases according to the filling amount, as is apparent from the gas equation of state.
- hydrogen gas receives work by compression and increases internal energy.
- the temperature of hydrogen gas increases according to the filling amount.
- hydrogen gas releases heat to the outside through the hydrogen tank 16, and after a long time, it reaches thermal equilibrium with the surroundings.
- the temperature of hydrogen gas is asymptotic to the ambient temperature (typically the outside temperature). I will do it. ,
- FIG. 2 is a schematic diagram illustrating a configuration example of the thermistor 20.
- the thermistor 20 is composed of, for example, a resistor having a low temperature dependency and having a reference electric resistance r, and a semiconductor having an electric resistance R that decreases as the temperature increases (and increases as the temperature decreases). It is configured by connecting elements in series (this semiconductor element may be called a thermistor, but in this embodiment, a temperature detection device including the resistor is called a thermistor).
- a reference voltage here, 5 V is applied to both ends.
- a voltage v 5 RZ (R + r) determined by temperature is applied to the semiconductor element.
- the relationship between the voltage V and the temperature is previously stored in the conversion table 3 2 shown in FIG. 1, and the temperature conversion unit 30 converts the voltage V into the temperature with reference to the conversion table 3 2.
- Fig. 3 is a graph schematically showing the relationship between voltage V (vertical axis) and temperature (horizontal axis) in thermistor 20.
- the electrical resistance R of the semiconductor element becomes very small, so the voltage V approaches 5 V.
- the electrical resistance becomes very large, so the voltage V approaches OV.
- the voltage V is 4.9 V when the temperature is 1-30 degrees Celsius, and the voltage is 0.2 V at 90 degrees Celsius.
- This thermistor 20 is designed so that the detection range is from 30 ° C. to 90 ° C., that is, the voltage V is from 4.9 V to 0.2 V.
- the electrical resistance R of the semiconductor element and the electrical resistance r of the resistor are set so as to have sufficient temperature resolution in this detection range. If the voltage V shows a value outside the detection range, it is assumed that a failure has occurred. Specifically, when the voltage V is higher than the upper limit value of 4.9 V, the electrical resistance R is almost very large, and it is considered that a disconnection has occurred. Ma When the voltage v is lower than the lower limit of 0.2 V, the electrical resistance R is almost zero, and it is considered that a short circuit has occurred.
- the failure determination unit 34 determines the failure such as short circuit or disconnection.
- the failure determination unit 3 4 performs failure determination with reference to the determination table 3 6, which is a table in which the voltage V is associated with the presence or absence of a failure.
- the determination table 3 6, is a table in which the voltage V is associated with the presence or absence of a failure.
- the temperature may be outside the detectable range of Therminuta 20 depending on the degree of filling or release.
- FIG. 4 is a graph for explaining an example when a temperature outside the detection range of the thermistor 20 is generated in the hydrogen tank 16.
- the vertical axis of the graph represents the temperature of the hydrogen tank 16, and the horizontal axis represents the internal pressure of the hydrogen tank 16 and changes in the internal pressure.
- the internal pressure and temperature of the hydrogen tank 16 are at point A in the graph as the initial state. That is, the hydrogen tank 16 is filled with full hydrogen gas, and shows an internal pressure of 7 OMPa. Hydrogen gas is in thermal equilibrium with the surroundings, and its temperature is 30 degrees Celsius, similar to the ambient temperature.
- the internal pressure and temperature of the hydrogen tank 16 change along the solid line in the figure.
- the internal pressure and temperature decrease linearly, and after passing through point B (internal pressure 20 MPa, temperature 30 degrees Celsius), point C (internal pressure 0 MPa, temperature 150 degrees Celsius) Has reached.
- point B internal pressure 20 MPa, temperature 30 degrees Celsius
- point C internal pressure 0 MPa, temperature 150 degrees Celsius
- the hydrogen tank 16 is emptied, the temperature rises under the influence of the ambient temperature, and approaches point D (internal pressure 0 MPa, temperature 30 degrees Celsius).
- point D internal pressure 0 MPa, temperature 30 degrees Celsius
- the hydrogen tank 16 shows a slight temperature rise due to the influence of the ambient temperature (non-adiabatic effect).
- the temperature of the hydrogen tank 16 is less than 30 degrees Celsius.
- This temperature is a temperature at which the voltage V of the thermistor 20 becomes 4.9 V or more, and is a temperature at which disconnection is considered to occur.
- no disconnection has occurred. Therefore, in the failure determination unit 3 4 shown in Fig. 1, if there is a possibility that the temperature of the hydrogen tank 16 is less than _30 degrees Celsius, It is set not to make a judgment. This setting will be explained using Fig. 5. '
- FIG. 5 is a graph showing a condition as to whether or not the failure determination unit 34 can perform the disconnection determination.
- the vertical axis is the temperature around the hydrogen tank 16, which is the temperature sensor in Figure 1
- the horizontal axis represents the internal pressure of the hydrogen tank 16 and the maximum internal pressure change.
- the internal pressure is a value measured by the pressure sensor 18 in FIG.
- the maximum internal pressure change represents the maximum value that can be changed by the release of hydrogen gas within the time that the internal pressure of the hydrogen tank 16 that was in thermal equilibrium with the ambient temperature can be considered adiabatic. Yes.
- the thick solid lines including points A, B, and C in Fig. 5 correspond to the solid lines including points A, B, and C shown in Fig. 4.
- the solid line in Fig. 4 represents the change in the state of hydrogen gas when the ambient temperature is 30 degrees Celsius, so in Fig. 5 it is drawn as a straight line with an ambient temperature of 30 degrees Celsius.
- the points A, B, and C are located at locations where the internal pressure is 70 MPa, 20 MPa, and 0 MPa, respectively.
- the temperature of hydrogen gas decreases from 30 degrees Celsius, and when it reaches point B,
- the hydrogen gas in the line segment A B in FIG. 5, as long as the initial temperature is 30 degrees Celsius, the hydrogen gas always shows a temperature of 130 degrees or higher. For example, if the hydrogen gas is 30 degrees Celsius when the internal pressure is less than full (for example, 50 MPa), even if the hydrogen gas is released until the internal pressure reaches 2 OMPa, It won't fall below 30 degrees Celsius.
- hydrogen gas may show a temperature of 130 ° C. or lower.
- the thermal equilibrium state at point A is set as the initial state, if hydrogen gas is released in a short time that can be regarded as adiabatic, the line BC will always be less than 30 degrees Celsius.
- the thin solid line passing through point B represents the boundary that separates the possibility of hydrogen gas becoming cooler than 30 degrees Celsius when the ambient temperature is changed.
- This thin line passes through a point with an internal pressure of 7 OM Pa when the ambient temperature is 1-30 degrees Celsius. This can be understood from the fact that as the internal pressure decreases, the temperature of the hydrogen gas immediately falls below 30 degrees Celsius due to the temperature drop.
- the thin solid line passes the point where the internal pressure is O M Pa when the ambient temperature is 50 degrees Celsius. This shows that the OMPa hydrogen gas shows a temperature change of up to 80 degrees above ambient temperature (this is the amount of temperature drop when full hydrogen gas is released) This is because if the initial temperature is 50 degrees Celsius, it will only be 30 degrees Celsius.
- the area on the upper right side of this thin solid line is the area where the hydrogen tank 16 is predicted not to fall below 30 degrees Celsius.
- the disconnection occurs only when the ambient temperature input from the temperature sensor 26 and the internal pressure input from the pressure sensor 18 enter this shaded area. It is set to carry out the determination. That is, it is checked whether or not the voltage output from the thermistor 20 exceeds the determination threshold value of 4.9 V, and the disconnection is determined. If it is determined that no disconnection has occurred, the result of converting the voltage to temperature is output. On the other hand, when entering the area on the lower left side of the thin solid line, the disconnection is not judged. In this case, it can be arbitrarily set whether or not the voltage is converted into temperature (forcibly) and output.
- the thermistor 20 is assumed to have a short circuit when the voltage output is 0.2 V or less. This corresponds to a temperature of 90 degrees Celsius or higher. Therefore, based on the possibility that when an empty hydrogen tank 16 is filled with hydrogen gas, the temperature of the hydrogen gas in the initial state C temperature equilibrium will rise to over 90 degrees Celsius. What is necessary is just to determine the feasibility of the detection of a short circuit. Specifically, if there is a possibility that the temperature will be 90 degrees Celsius or higher, the short circuit will not be determined.If there is no possibility that the temperature will be 90 degrees Celsius or higher, a short circuit determination will be performed. To do To do.
- the conditions for the occurrence of a short circuit or disconnection may be evaluated with increased accuracy of temperature prediction.
- the process of filling or releasing hydrogen gas there is a mode in which the effect of the hydrogen gas temperature approaching the ambient temperature as time passes is taken into account.
- the temperature in the initial state is evaluated based on the detection result of the thermistor 20 so as to cope with the case where the temperature of the hydrogen gas and the ambient temperature are different. Can also be mentioned. However, if the thermistor 20 is disconnected or short-circuited, the temperature evaluation in the initial state is not performed correctly. 4.9 V) would be necessary.
- a mode in which the hydrogen tank 16 is not full or empty (a state in which the internal pressure of the hydrogen gas is higher than 0 V and lower than 7 OMPa) can be shown as an initial state.
- the accuracy of temperature prediction is increased in this way, the range in which short-circuit determination or disconnection determination can be performed is expanded.
- thermistor 20 can usually detect the temperature in the range from 30 degrees Celsius to 90 degrees Celsius (range from 4.9 V to 0.2 V). Range. If it shows less than 30 degrees Celsius (4.9 V or more), it is determined that a disconnection has occurred. If it shows 90 degrees Celsius (0.2 V or less), a short circuit has occurred. It is determined that it has occurred. Therefore, the threshold value of this judgment is changed according to the predicted temperature or the conditions that give the temperature (conditions given by the internal pressure, maximum internal pressure change, ambient temperature, etc.).
- failure determination if the failure is considered to be a failure based on the voltage of the thermistor 2 ⁇ being within a predetermined range, whether or not failure determination is performed is the same as in the case of a short circuit. Can be determined.
- the temperature detection of the hydrogen tank 16 mounted on the fuel cell vehicle 10 is taken as an example.
- the present embodiment can also be applied to a high-pressure tank that accumulates other gases and liquids. is there.
- this embodiment can also be used for temperature detection of a high-pressure tank that is not mounted on a vehicle.
Landscapes
- Sustainable Energy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2008800057479A CN101617206B (zh) | 2007-02-22 | 2008-02-22 | 高压罐温度检测系统、高压罐系统 |
DE112008000257.6T DE112008000257B4 (de) | 2007-02-22 | 2008-02-22 | Hochdrucktank-Temperaturdetektionssystem und Hochdruck-Tanksystem |
US12/523,467 US8308347B2 (en) | 2007-02-22 | 2008-02-22 | High-pressure tank temperature detection system and high-pressure tank system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007-041840 | 2007-02-22 | ||
JP2007041840A JP4270290B2 (ja) | 2007-02-22 | 2007-02-22 | 高圧タンク温度検出システム、高圧タンクシステム |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008105522A1 true WO2008105522A1 (ja) | 2008-09-04 |
Family
ID=39721344
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2008/053582 WO2008105522A1 (ja) | 2007-02-22 | 2008-02-22 | 高圧タンク温度検出システム、高圧タンクシステム |
Country Status (5)
Country | Link |
---|---|
US (1) | US8308347B2 (ja) |
JP (1) | JP4270290B2 (ja) |
CN (1) | CN101617206B (ja) |
DE (1) | DE112008000257B4 (ja) |
WO (1) | WO2008105522A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010266207A (ja) * | 2009-05-12 | 2010-11-25 | Toyota Motor Corp | 温度検出器および温度検出器を備えた水素充填システム |
US8362950B2 (en) | 2007-11-26 | 2013-01-29 | Mediatek Inc. | Method and device for predicting GNSS satellite trajectory extension data in mobile apparatus |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9731593B2 (en) * | 2008-08-07 | 2017-08-15 | Ford Global Technologies, Llc | Fuel storage system |
CN103323146A (zh) * | 2012-03-21 | 2013-09-25 | 王尚清 | 一种用气体驱动的等熵过程压力温度场装置和该装置的用途 |
JP6001315B2 (ja) * | 2012-04-26 | 2016-10-05 | トヨタ自動車株式会社 | ガス充填システム及び車両 |
CN103148341A (zh) * | 2013-03-27 | 2013-06-12 | 张家港市科华化工装备制造有限公司 | 一种带有检测装置的低温储罐 |
US20140182561A1 (en) * | 2013-09-25 | 2014-07-03 | Eghosa Gregory Ibizugbe, JR. | Onboard CNG/CFG Vehicle Refueling and Storage Systems and Methods |
US9696234B2 (en) | 2014-07-25 | 2017-07-04 | Ford Global Technologies, Llc | Evaporative emissions testing based on historical and forecast weather data |
US10405534B2 (en) * | 2014-12-02 | 2019-09-10 | Cnh Industrial America Llc | System and method for electronic fluid measurement |
DE102016223315A1 (de) * | 2016-11-24 | 2018-05-24 | Bayerische Motoren Werke Aktiengesellschaft | Drucktankanordnung, Fortbewegungsmittel und Verfahren zum Veranschaulichen eines Zustandes eines Druckspeichers für Treibstoff |
JP6919322B2 (ja) * | 2017-05-17 | 2021-08-18 | 株式会社アイシン | 燃料電池システム |
JP6800258B2 (ja) * | 2019-02-12 | 2020-12-16 | 本田技研工業株式会社 | 高圧タンクの残圧判定システム、高圧タンクの残圧判定方法、燃料電池車両 |
EP3994020B1 (en) * | 2019-07-02 | 2023-06-07 | Volvo Truck Corporation | A fuel gas system for a vehicle |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63139224A (ja) * | 1986-12-02 | 1988-06-11 | Matsushita Seiko Co Ltd | 温度検出装置 |
JPH0133065Y2 (ja) * | 1986-07-15 | 1989-10-06 | ||
JPH04175439A (ja) * | 1990-11-08 | 1992-06-23 | Fujitsu Ten Ltd | 水温センサ異常検出装置 |
JPH0785883A (ja) * | 1993-09-10 | 1995-03-31 | Toyota Motor Corp | 異常検出装置および異常時制御装置 |
JP2006083943A (ja) * | 2004-09-16 | 2006-03-30 | Galaxy Express Corp | 液化ガスタンクの監視方法及び監視装置 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4766557A (en) * | 1986-06-20 | 1988-08-23 | Westinghouse Electric Corp. | Apparatus for monitoring hydrogen gas leakage into the stator coil water cooling system of a hydrogen cooled electric generator |
US5333498A (en) * | 1992-06-19 | 1994-08-02 | W. L. Walker Co., Inc. | Apparatus and method for measuring physical characteristics of a liquid |
JPH1033065A (ja) * | 1996-07-19 | 1998-02-10 | Keiko Nakamura | 底面給水栽培床装置 |
JP3221388B2 (ja) | 1998-03-30 | 2001-10-22 | 岩崎通信機株式会社 | 温度検出回路 |
JP2985131B1 (ja) | 1998-12-25 | 1999-11-29 | 阪神エレクトリック株式会社 | サ―ミスタ監視装置 |
US7010459B2 (en) * | 1999-06-25 | 2006-03-07 | Rosemount Inc. | Process device diagnostics using process variable sensor signal |
JP3687472B2 (ja) | 2000-03-13 | 2005-08-24 | 豊田工機株式会社 | 温度検出装置 |
US6276193B1 (en) * | 2000-08-10 | 2001-08-21 | Eaton Corporation | Detecting vapor leakage in a motor vehicle fuel system |
DE10112139A1 (de) * | 2001-03-14 | 2002-09-19 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Überwachung eines Sensors |
JP3851881B2 (ja) * | 2003-02-20 | 2006-11-29 | 本田技研工業株式会社 | 内燃機関の冷却水の温度センサの故障を診断する装置 |
US6996997B2 (en) * | 2003-03-05 | 2006-02-14 | Thermo King Corporation | Pre-trip diagnostic methods for a temperature control unit |
JP2005156389A (ja) | 2003-11-27 | 2005-06-16 | Hitachi Ltd | 温度検出・断線検出回路、温度検出・断線検出方法、及び内燃機関制御装置 |
JP2005240854A (ja) * | 2004-02-24 | 2005-09-08 | Nissan Motor Co Ltd | 気体燃料残量表示装置 |
JP2005283127A (ja) * | 2004-03-26 | 2005-10-13 | Nissan Motor Co Ltd | 燃料量演算装置 |
JP4513426B2 (ja) * | 2004-06-15 | 2010-07-28 | トヨタ自動車株式会社 | 温度センサの異常検出方法、および電源装置 |
US20060042278A1 (en) * | 2004-08-31 | 2006-03-02 | Thermo King Corporation | Mobile refrigeration system and method of detecting sensor failures therein |
-
2007
- 2007-02-22 JP JP2007041840A patent/JP4270290B2/ja not_active Expired - Fee Related
-
2008
- 2008-02-22 DE DE112008000257.6T patent/DE112008000257B4/de active Active
- 2008-02-22 CN CN2008800057479A patent/CN101617206B/zh not_active Expired - Fee Related
- 2008-02-22 US US12/523,467 patent/US8308347B2/en not_active Expired - Fee Related
- 2008-02-22 WO PCT/JP2008/053582 patent/WO2008105522A1/ja active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0133065Y2 (ja) * | 1986-07-15 | 1989-10-06 | ||
JPS63139224A (ja) * | 1986-12-02 | 1988-06-11 | Matsushita Seiko Co Ltd | 温度検出装置 |
JPH04175439A (ja) * | 1990-11-08 | 1992-06-23 | Fujitsu Ten Ltd | 水温センサ異常検出装置 |
JPH0785883A (ja) * | 1993-09-10 | 1995-03-31 | Toyota Motor Corp | 異常検出装置および異常時制御装置 |
JP2006083943A (ja) * | 2004-09-16 | 2006-03-30 | Galaxy Express Corp | 液化ガスタンクの監視方法及び監視装置 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8362950B2 (en) | 2007-11-26 | 2013-01-29 | Mediatek Inc. | Method and device for predicting GNSS satellite trajectory extension data in mobile apparatus |
JP2010266207A (ja) * | 2009-05-12 | 2010-11-25 | Toyota Motor Corp | 温度検出器および温度検出器を備えた水素充填システム |
Also Published As
Publication number | Publication date |
---|---|
CN101617206B (zh) | 2011-06-15 |
US20100098130A1 (en) | 2010-04-22 |
DE112008000257T5 (de) | 2009-12-31 |
CN101617206A (zh) | 2009-12-30 |
JP2008203171A (ja) | 2008-09-04 |
JP4270290B2 (ja) | 2009-05-27 |
US8308347B2 (en) | 2012-11-13 |
DE112008000257B4 (de) | 2017-10-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2008105522A1 (ja) | 高圧タンク温度検出システム、高圧タンクシステム | |
JP5261408B2 (ja) | 燃料ガスステーション、燃料ガス充填システム、燃料ガス供給方法 | |
US11105466B2 (en) | Method for setting the temperature and/or the pressure of fuel, in particular of hydrogen, in multiple pressure vessels of a vehicle to in each case one temperature setpoint value and/or in each case one pressure setpoint value before a filling process of the pressure vessels | |
JP5125412B2 (ja) | タンク内に貯蔵された圧縮ガスの残量の算出 | |
US8910651B2 (en) | Thermal pressure relief devices and related systems and methods | |
JP2017509896A (ja) | 車両液体収容システム、および車両液体収容システムの完全性を確認するための方法 | |
KR101691211B1 (ko) | 하이브리드/전기자동차의 온도센서 고장진단 장치 및 그 방법 | |
US11260749B2 (en) | Cooling control systems | |
WO2015025169A2 (en) | Measurement device, measurement system, canister and measurement method | |
US7458246B2 (en) | Method for functionally testing a filling level sensor | |
JP5595466B2 (ja) | 温度検出回路 | |
US10746109B2 (en) | Monitoring apparatus for a pressure tank, and pressure tank | |
JP2012013508A (ja) | 燃料タンク内の温度算出システム | |
CN209037865U (zh) | 一种可测量用油量的无人机供油系统 | |
US8927171B2 (en) | Method for preventing pressure in vessels from dropping below minimum allowable pressure | |
JP6650194B2 (ja) | 検出装置及び検出方法 | |
JP2014095659A (ja) | 温度検出回路 | |
CN116256121A (zh) | 燃料电池车辆的氢气泄漏感测装置和方法 | |
WO2021078340A1 (en) | Leakage detection | |
SE532152C2 (sv) | Metod för övervakning av kylutrustning | |
CN114829829B (zh) | 压力容器系统和能量供应装置 | |
JP3538857B2 (ja) | Lpg残量警告装置 | |
SE541987C2 (en) | Method and system for automatic diagnosis of a vehicle tank comprising liquefied gas | |
CN116131716A (zh) | 电力转换器和操作电力转换器的方法 | |
JPS59180203A (ja) | ボイラ応力監視方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200880005747.9 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 08721031 Country of ref document: EP Kind code of ref document: A1 |
|
DPE1 | Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101) | ||
WWE | Wipo information: entry into national phase |
Ref document number: 12523467 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1120080002576 Country of ref document: DE |
|
RET | De translation (de og part 6b) |
Ref document number: 112008000257 Country of ref document: DE Date of ref document: 20091231 Kind code of ref document: P |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 08721031 Country of ref document: EP Kind code of ref document: A1 |